CN109356830A

CN109356830A - A leak-proof RO pump

Info

Publication number: CN109356830A
Application number: CN201811345929.2A
Authority: CN
Inventors: 叶斌海; 孙铭
Original assignee: Ningbo Lijia Qingshi Electric Technology Co Ltd
Current assignee: Ningbo Lijia Qingshi Electric Technology Co Ltd
Priority date: 2018-11-13
Filing date: 2018-11-13
Publication date: 2019-02-19

Abstract

The invention discloses a kind of RO of preventing water leakage pump, after solving diaphragm breakage at this stage, the problem of leak damages bottom plate and ground object occurs for RO pump.Its key points of the technical solution are that a kind of RO of preventing water leakage is pumped, by the way that the first sealing structure is arranged in the junction of motor upper cover and pump head shell, third sealing structure is arranged in the junction that second seals structure and motor housing and motor lower cover is arranged in the junction of motor upper cover and motor housing, to the whole preventing water leakage performance of the RO pump for that entire preventing water leakage of refreshing oneself, avoid because there is a phenomenon where leak generations for RO pump after diaphragm breakage.

Description

A kind of RO pump of preventing water leakage

Technical field

The present invention relates to a kind of RO pumps, pump more particularly to a kind of RO of preventing water leakage.

Background technique

It is reverse osmosis diaphragm booster pump that RO, which pumps full name, has the function of self-priming and pressurization, is the key that RO water purifier is important One of component.RO pump mainly includes RO pump head and driving motor, and the diaphragm of one piece with driving motor face is provided on RO pump head Piece, the output end of driving motor, which is equipped with a bias and waves wheel and wave close-fitting three cam of wheel with bias, fetches water group Part, when driving motor driving bias waves wheel operation, three cams bracket component of fetching water moves reciprocatingly, to drive RO pump head In diaphragm move reciprocatingly, thus realize RO pump self-priming and pressurization function.

At this stage, RO pump belongs to vulnerable part in the application interval diaphragm of RO water purifier, after diaphragm impaired rupture, RO pump In water can be revealed from the crack of diaphragm and flow to RO water purifier where room ground on, to other objects on ground Or floor damages, and wastes a large amount of water, therefore needs to develop a kind of RO pump of preventing water leakage at this stage.

Summary of the invention

The object of the present invention is to provide a kind of RO of preventing water leakage pumps, and after diaphragm breakage, water leakage will not occur for RO pump, Avoid the water of leakage on ground object or floor damage.

Above-mentioned technical purpose of the invention has the technical scheme that

A kind of RO pump of preventing water leakage, including RO pump head, driving motor be installed on driving motor output end and with the cooperation of RO pump head Three cams are fetched water bracket component, and the RO pump head includes pump head shell, the intracorporal control volume of installation pump head shell and diaphragm, described Driving motor includes electric machine casing, the rotor and stator for being installed on electric machine casing, and the electric machine casing includes motor upper cover, motor Shell and motor lower cover, the motor upper cover have the output through-hole that the shaft for rotor passes through, the motor upper cover and pump head It is formed with after shell connection and fetches water the first airtight chamber of bracket component installation for three cams, the motor upper cover and pump head shell Junction is provided with the first sealing structure for preventing the indoor water of the first closed chamber from revealing from the two junction；On the motor Lid, motor housing are formed with the second airtight chamber for rotor and stator installation after connecting with motor lower cover；The motor upper cover The the second sealing knot for preventing the indoor water of the second seal chamber from revealing from the junction of the two is provided with the junction of motor housing Structure；The junction of the motor lower cover and electrolysis shell, which is provided with, prevents the indoor water of the second seal chamber from letting out from the junction of the two The third sealing structure of dew.

RO pump is mainly made of RO pump head, driving motor and three cams bracket component of fetching water, wherein driving motor includes again Motor upper cover, motor housing and motor lower cover, after the diaphragm in RO pump head occurs damaged, the water in RO pump head can pass through electricity Machine upper cover and the connection gap of RO pump head, the connection gap of motor upper cover and motor housing, motor housing and motor lower cover company Seam gap is revealed.Since RO pump is applied on RO water purifier, so that the water entered in RO pump inherently has one Fixed hydraulic pressure, under certain hydraulic pressure, RO hydraulic pressure of the pump within the unit time or bigger.

The present invention by the first sealing structure of setting, second seals structure and third sealing structure respectively to motor upper cover and The connection gap of RO pump head, the connection gap of motor upper cover and motor housing, the connection gap of motor housing and motor lower cover into Row sealing carries out whole sealing to pump to RO, it is therefore prevented that water is revealed from above three connection gap, to solve The water revealed after RO pump interval diaphragm breakage can the damage caused by the object and bottom plate on ground.

In the prior art, a kind of water-leakage protecting device can be arranged in existing water purifier, for solve RO pump reveal after To on ground object and floor damage the problem of, specific technical solution is as described below: by the bottom that RO is pumped be arranged it is recessed Shape slot, and sensor is installed in baltimore groove, and one solenoid valve is set in the water inlet end of RO pump, when RO pump leaks When, the water that RO pump leaks can gather in baltimore groove, and be mounted sensor and detect, control electricity by control circuit Magnet valve is closed.Since above-mentioned technical proposal is feasible, and solves after RO pump is revealed and cause damages to a certain extent The problem of, therefore promoted by RO water purifier industry, so that generally being used on solving above-mentioned technical problem at this stage It is water-leakage protecting device, R&D direction also predominantly changes baltimore groove, sensor, solenoid valve and relevant control circuit Into generating certain limitation to a certain extent.

Although above-mentioned water-leakage protecting device can pump RO and carry out leak protection, this leak protection structure is used The related elements such as sensor, baltimore groove and solenoid valve increase water purifier cost to a certain extent；And the present inventor Technology prejudice is overcome, pumps in itself from RO, using more traditional mechanical seal structure, RO pump is solved and leaks The problem of water, and the sealing performance of above-mentioned first sealing structure, second seals structure and third sealing structure is more reliable Stablize.

As a further improvement of the present invention, the pump head shell and motor upper cover are bolted by least three first Fixed, the pump head shell has the first through hole that the screw rod for the first bolt passes through, and the motor upper cover has leads to first One-to-one first threaded hole in hole；First sealing structure includes being opened in the end being affixed in motor upper cover with pump head shell The first seal groove on face and the first sealing ring being installed in the first seal groove.

By using above-mentioned technical proposal, pump head shell and motor upper cover pass through first and are bolted fixation, this fixation Mode structure is simple, and bonding strength is high；First sealing structure is by the way of the first seal groove and the first sealing ring, this sealing Mode structure is simple, and sealing effect is ideal.

As a further improvement of the present invention, the bottom of the motor upper cover has the upper sealing at the top of insertion motor housing Portion, the second seals structure include circumferential the second seal groove for being opened in upper cover sealing lateral wall and are installed on the second sealing The outer ring of the second sealing ring in slot, second sealing ring is circumferentially abutted with motor housing inner wall；The top of the motor lower cover Portion has the sealing portion at the top of insertion motor housing, and the third sealing structure includes circumferentially being opened in sealing portion lateral wall Third seal groove and the third sealing ring that is installed in third seal groove, in the outer ring and motor housing of the third sealing ring Wall circumferentially abuts.

By using above-mentioned technical proposal, second seals structure is by the way of the second seal groove and the second sealing ring, and For three sealing structures by the way of third seal groove and third sealing ring, this sealing means structure is simple, and sealing effect is ideal.

As a further improvement of the present invention, the motor upper cover is connected with motor lower cover by least two screw rods solid Fixed, the motor lower cover has a fixation counterbore passed through for screw rod, the motor upper cover have corresponded with fixed counterbore and With the fixed bolt of screw flight cooperation；It is also provided at circumferentially spaced by least three between the upper sealing and motor housing Upper cover screw be connected and fixed, the upper cover screw is respectively positioned on the top of the second sealing ring；The sealing portion and motor housing Part is connected and fixed also by least three circumferentially spaced lower cover screws, and the lower cover screw is respectively positioned on third sealing ring Lower section.

By using above-mentioned technical proposal, after diaphragm breakage, the water in RO pump head can flow to first annular seal space room In the second sealed chamber, and make first annular seal space room and the indoor water of the second seal chamber that there is the hydraulic pressure at RO pump water inlet end, So that the pressure that motor upper cover and motor lower cover are gone out the two by one from motor housing.Therefore, two are used first Motor upper cover, motor housing and motor lower cover are connected and fixed by screw rod by fixed counterbore and fixed bolt, and are passed through respectively Upper cover screw and lower cover screw are further connected and fixed motor upper cover and motor housing, motor lower cover and motor housing, ensure that Motor upper cover, motor housing and motor lower cover will not be broken up by the hydraulic pressure of its internal leakage, it helps guarantee the second sealing knot The sealing performance of structure and third sealing structure.

As a further improvement of the present invention, the motor upper cover has and connect with upper cover screw one-to-one first Portion, the first connecting portion have the first threaded hole for cooperating with upper cover screw thread in the outside of upper sealing, and described first Threaded hole is blind hole；The motor lower cover has to exist with the one-to-one second connecting portion of lower cover screw, the second connecting portion The outside of sealing portion has the second threaded hole cooperated with lower cover screw thread, and second threaded hole is blind hole.

By using above-mentioned technical proposal, the setting of first connecting portion/second connecting portion can be avoided first annular seal space room Interior water is connected by revealing in the installation gap of upper cover screw and lower cover screw, and by the way that first is arranged in motor upper cover Second connecting portion is arranged in motor lower cover in portion, can guarantee the fastening ability of upper cover screw and lower cover screw.

As a further improvement of the present invention, injection has the fixation glue with the bonding of upper cover screw in first threaded hole； Injection has the fixation glue with the bonding of lower cover screw in second threaded hole.

By using above-mentioned technical proposal, the setting of fixed glue can further promote consolidating for upper cover screw and lower cover screw Capability, the probability for avoiding the first screw and the second screw from being detached from from first connecting portion/second connecting portion.

As a further improvement of the present invention, the motor lower cover has downwardly convex leading part, and the leading part exists Towards the side of the second seal chamber there is the side lateral wall of wire lead slot and leading part to offer the lead being connected to wire lead slot to open Mouthful, the motor lower cover is equipped with rubber sealing block in wire lead slot, and the rubber sealing block has the linear sealing of power supply machine power supply The sealed passage passed through, the sealed passage have at least one bending part.

By using above-mentioned technical proposal, due to the connection of driving motor, being bound in motor lower cover, there are one The port that power supply source line is pierced by.In the present invention by setting wire lead slot and rubber sealing block, power supply line is enabled to pass through rubber Sealed passage in glue sealing block is pierced by from the second sealed chamber to outside driving motor.Since after diaphragm breakage, second is close Sealing the indoor leakage water of chamber, there are certain hydraulic pressure, and rubber sealing block can be pressed on to lead trench bottom, to realize to lead The sealing of opening, meanwhile, rubber sealing block has deformation to a certain extent in the presence of hydraulic pressure, at least due to sealed passage With a bending part, so that power supply line can compress sealing in rubber sealing block, the close of rubber sealing block is further improved Sealing property.

As a further improvement of the present invention, the motor lower cover has in the side towards the second seal chamber for rotor The lower limit slot of lower bearing installation, the motor lower cover in the other side there is the detection counterbore being connected to lower limit slot and sealing to connect The detection end cap being connected on detection counterbore, the detection end cap are removably mounted in detection counterbore.

The setting that counterbore and detection end cap are detected by using above-mentioned technical proposal, in motor lower cover can be used in detecting RO Pump whether leak, when RO pump not at work, end cap can be will test and removed, if it find that there are certain water from detection counterbore Middle leakage then proves that RO pump is revealed.

As a further improvement of the present invention, it is described detection end cap towards the second seal chamber side offer detection it is blind Hole and the testing agency being installed at detection blind hole, the bottom of the detection blind hole are provided with logical through the detection for detecting end cap Mouthful, the testing agency includes that sealing sliding is installed on the sliding head of detection blind hole, is set to sliding head and by detection port It stretches out the detection lug of detection end cap and is connected to sliding head simultaneously and detects the compressed spring between blind hole.

By using above-mentioned technical proposal, the working principle of above-mentioned testing agency is as follows: the diaphragm in RO pump It being damaged and the water in RO pump head is caused to reveal, then first annular seal space room and the second sealed chamber will be leaked water filling, So that the sliding head of testing agency affords hydraulic pressure and compressed spring is driven to be compressed, while it is logical to make detection lug stretch out detection The length of mouth gets a promotion.User can be pumped by RO in detection lug stretching length can directly judge RO pump whether deposit It is leaking.

As a further improvement of the present invention, at the connection gap of the pump head shell and motor upper cover, motor upper cover and It is coated with one layer of sealant layer at the connection gap of motor housing, at the connection gap of motor housing and motor lower cover, it is described The width of sealant layer is not less than 1cm.

By using above-mentioned technical proposal, the setting of sealant layer can further promote the sealing performance of entire RO pump, The probability revealed is pumped to reduce RO.

In conclusion the invention has the following advantages:

1, the RO pump of a kind of preventing water leakage, by the first sealing structure being arranged, in electricity in the junction of motor upper cover and pump head shell The junction setting the of second seals structure and motor housing and motor lower cover is arranged in the junction of machine upper cover and motor housing Three sealing structures, so that the whole preventing water leakage performance that the RO for that entire preventing water leakage of refreshing oneself is pumped, avoids because after diaphragm breakage There is a phenomenon where leaks to occur for RO pump；

2, the upper sealing and motor housing of motor upper cover also pass through upper cover screw fix and the sealing portion of motor lower cover and Motor housing is connected and fixed by lower cover screw, the globality of entire driving motor is able to ascend, when in first annular seal space room There are when certain hydraulic pressure, motor upper cover, motor housing and motor lower cover in driving motor will not disintegrate because of leakage hydraulic pressure two；

3, the sealed passage that motor lower cover by setting leading part and rubber sealing block, rubber sealing block there is power supply source line to pass through And sealed passage has at least one bending part, can prevent leakage water from passing through the leakage of the gap of sealed passage and power supply line；

4, motor lower cover is additionally provided with detection blind hole and testing agency, the RO of preventing water leakage can be pumped in first annular seal space room and the Two sealed chambers are detected with the presence or absence of leak, to avoid pumping inner cavity there are booting up in the case where ponding in RO, are had Help protect the driving motor that RO is pumped.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment 1；

Fig. 2 is the diagrammatic cross-section of embodiment 1；

Fig. 3 is the perspective view of the explosion of extensive region pump head shell and motor upper cover in embodiment 1；

Fig. 4 is the enlarged drawing in Fig. 2 at A；

Fig. 5 is the perspective view of the explosion of driving motor in embodiment 1；

Fig. 6 is the enlarged drawing in Fig. 2 at B；

Fig. 7 is the bottom substance schematic diagram of motor upper cover in embodiment 1；

Fig. 8 is the top structure schematic diagram of motor lower cover in embodiment 1；

Fig. 9 is the bottom substance schematic diagram of motor lower cover in embodiment 1；

Figure 10 is the enlarged drawing in Fig. 2 at C；

Figure 11 is the enlarged drawing in Fig. 2 at D；

Figure 12 is the diagrammatic cross-section of motor lower cover and testing agency in embodiment 2.

In figure: 1, RO pump head；11, pump head shell；111, pump head upper housing；111a, the first pump head fin；112, under pump head Shell；112a, pump head seal groove；112b, pump head sealing ring；113, water supply connector；114, water outlet connector；115, installation cavity； 115a, water inlet chamber；115b, pressurized chamber；115c, water outlet chamber；116, pump head bulge loop；116a, the second pump head fin；117, First through hole；12, control volume；13, diaphragm；131, it is pressurized protrusion；2, driving motor；21, electric machine casing；211, on motor Lid；211a, fixed bolt；211b, upper sealing；211b1, the second seal groove；211b2, first connecting portion；211b3, the first spiral shell Pit；211b4, the second sealing ring；211c, upper cover screw；212, motor housing；213, motor lower cover；213a, fixed counterbore； 213b, sealing portion；213b1, third seal groove；213b2, second connecting portion；213b3, the second threaded hole；213c, lower cover spiral shell Nail；213d, third sealing ring；213e, leading part；213e1, wire lead slot；213e2, lead opening；213f, lower limit slot； 213g, detection counterbore；214, motor bulge loop；214a, the first seal groove；214b, the first sealing ring；215, the first bolt；216, First threaded hole；216, screw rod；217, sealing ring；218, rubber sealing block；218a, sealed passage；218a1, bending part；219, Detect end cap；219a, rotation card slot；219b, detection blind hole；219c, detection port；22, rotor；221, output shaft；23, fixed Son；3, three cams are fetched water bracket component；31, eccentric wheel；32, it fetches water bearing；33, it fetches water part；331, it fetches water cam；41, first Sealed chamber；42, the second airtight chamber；5, mounting bracket；51, fixed part；52, third screw；6, testing agency；61, it slides Head；62, compressed spring；63, detection lug.

Specific embodiment

Below in conjunction with attached drawing, invention is further described in detail.

Embodiment 1:

Refering to attached drawing 1 and attached drawing 2, a kind of RO pump of preventing water leakage, including RO pump head 1, driving motor 2 and it is installed on driving motor 2 Output end and three cams cooperated with RO pump head 1 are fetched water bracket component 3.

Refering to attached drawing 2 and attached drawing 3, RO pump head 1 includes pump head shell 11,12 and of control volume being installed in pump head shell 11 Diaphragm 13, pump head shell 11 include pump head upper housing 111 and pump head lower case 112.Wherein, pump head upper housing 111 have into Water swivel 113 and water outlet connector 114, and by being formed with an installation cavity 115 after cooperating with pump head lower case 112 and installing 115 lower end of cavity has fetches water the corresponding opening of bracket component 3 with three cams.

Control volume 12 and diaphragm 13 are mounted in the installation cavity 115 of pump head shell 11, and installation cavity 115 is separated At three chambers, the water inlet chamber 115a that is respectively connected to water supply connector 113, between control volume 12 and diaphragm 13 The pressurized chamber 115b and water outlet chamber 115c being connected with water outlet connector 114.Wherein, water inlet chamber 115a and water outlet chamber 115c mutually separates, and the water in chamber 115a of intaking is merely able to by being entered in water outlet chamber 115c after pressurized chamber 115b. RO pump head 1 has in total there are three pressurized chamber 115b, and diaphragm 13 has and increases correspondingly with three pressurized chamber 115b Belling portion 131.

Diaphragm 13 separates the opening of 115 lower end of installation cavity, and the outer end edges of diaphragm 13 are along by pump head upper casing Body 111 and pump head lower case 112 compress, so that the water at RO pump head 1 will not be from pump head upper housing 111 and pump head lower case 112 Seam in reveal.

Refering to attached drawing 2 to attached drawing 4, in order to further enhance the anti-leakage of pump head upper housing 111 and pump head lower case 112 Can, pump head sealing ring 112b is provided between pump head upper housing 111 and pump head lower case 112.Wherein, pump head lower case 112 exists Towards pump head upper housing 111 surface and the outside for being located at diaphragm 13 and control volume 12 is being provided with a pump head seal groove The 112a and pump head sealing ring 112b being installed in pump head seal groove 112a.Wherein, pump head upper housing 111 has seals with pump head Enclose the first pump head fin 111a that 112b is corresponding and is pressed into pump head sealing ring 112b.

Refering to attached drawing 2 and attached drawing 5, driving motor 2 includes electric machine casing 21,22 and of rotor being installed in electric machine casing 21 Stator 23.Electric machine casing 21 includes motor upper cover 211, motor housing 212 and motor lower cover 213, and motor upper cover 211 is located at motor Shell 212 is close to the side of RO pump head 1, and the output shaft 221 of rotor 22 is stretched out from motor upper cover 211, and three cams are fetched water bracket Component 3(is refering to attached drawing 3) it is just mounted on the output shaft 221 of rotor 22.

Refering to attached drawing 2 and attached drawing 3, three cams fetch water bracket component 3 mainly including being installed on 2 output shaft 221 of driving motor On eccentric wheel 31, the bearing 32 and being sheathed on of fetching water that is sheathed on eccentric wheel 31 fetch water the part 33 of fetching water in 32 outside of bearing, Part 33 of fetching water include be set in the outside of bearing 32 of fetching water fetch water base ring and be set at the top of base ring and be pressurized protrusion 131 one by one Corresponding cam 331 of fetching water.Wherein, cam 331 of fetching water is connected and fixed with protrusion 131 is pressurized by screw (not shown).

Refering to attached drawing 2 and attached drawing 3, in order to realize that three cams between protection driving motor 2 and RO pump head 1 are fetched water bracket group Part 3, the bottom of pump head lower case 112 are provided with pump head bulge loop 116, and it is right with pump head bulge loop 116 that the top of motor upper cover 211 has The motor bulge loop 214 that should be arranged.

Wherein, pump head shell 11 and motor upper cover 211 are connected and fixed by least three first bolts 215, pump head shell 11 have the first through hole 117 that the screw rod 216 for the first bolt 215 passes through, and motor upper cover 211 has and first through hole 117 1 One corresponding first threaded hole 211b3.In the present embodiment, pump head shell 11 and motor upper cover 211 pass through eight first bolts 215 are connected and fixed.

After pump head bulge loop 116 and motor bulge loop 214 are connected with each other, formed between motor upper cover 211 and pump head shell 11 There is the first annular seal space room 41 for supplying three cams to fetch water the installation of bracket component 3, and motor upper cover 211 and pump head lower case 112 connect Place is provided with the first sealing structure for preventing the water in first annular seal space room 41 from revealing from the two junction.

Refering to attached drawing 2, attached drawing 3 and attached drawing 6, the first sealing structure includes being opened in motor upper cover 211 and pump head shell The first seal groove 214a on 11 end faces being affixed, the first sealing ring 214b being installed in the first seal groove 214a and setting In 112 bottom of pump head lower case and the first sealing ring 214b is compressed to the second pump head fin 116a deformed.

Attached drawing 2, attached drawing 7 and attached drawing 9 are participated in, motor upper cover 211, motor housing 212 and motor lower cover 213 are formed after connecting There is the second airtight chamber 42 for rotor 22 and the installation of stator 23.Wherein, motor upper cover 211 and motor lower cover 213 are by least Two two screw rods 216 are connected and fixed, and motor lower cover 213 has the fixation counterbore 213a passed through for screw rod 216, motor upper cover 211 have the fixed bolt 211a for corresponding and being threadedly engaged with screw rod 216 with fixed counterbore 213a.

Wherein, it is flowed out to reduce in gap of the indoor water of the second seal chamber by screw rod 216 and fixed counterbore 213a, It is provided with sealing ring 217 in fixed counterbore 213a, sealing ring 217 is pressed on fixed counterbore 213a by screw rod 216 of screw rod 216 Cascaded surface on, realize the sealing to fixed counterbore 213a.

Refering to attached drawing 2 and attached drawing 10, the junction of motor upper cover 211 and motor housing 212, which is provided with, prevents the second sealing The second seals structure that water in chamber 42 is revealed from the junction of the two.The bottom of motor upper cover 211 has insertion motor housing The upper sealing 211b at 212 tops, second seals structure include circumferential the second seal groove for being opened in upper cover sealing lateral wall 211b1 and the second sealing ring 211b4 being installed in the second seal groove 211b1, outside the outer ring of the second sealing ring 211b4 and motor 212 inner wall of shell circumferentially abuts.

Refering to attached drawing 2, attached drawing 5 and attached drawing 7, also pass through at least three weeks between upper sealing 211b and motor housing 212 It is connected and fixed to spaced upper cover screw 211c, upper cover screw 211c is respectively positioned on the top of the second sealing ring 211b4.Motor Upper cover 211 have with the one-to-one first connecting portion 211b2 of upper cover screw 211c, first connecting portion 211b2 is in upper sealing It is blind hole that the outside of 211b, which has the first threaded hole 211b3, the first threaded hole 211b3 being threadedly engaged with upper cover screw 211c,.

Refering to attached drawing 2 and attached drawing 11, the junction of motor lower cover 213 and electrolysis shell, which is provided with, prevents the second sealed chamber The third sealing structure that interior water is revealed from the junction of the two.There is insertion motor housing 212 to push up at the top of motor lower cover 213 The sealing portion 213b in portion, third sealing structure include the circumferential third seal groove for being opened in sealing portion 213b lateral wall 213b1 and the third sealing ring 213d being installed in third seal groove 213b1, the outer ring of third sealing ring 213d and motor housing 212 inner walls circumferentially abut.

Refering to attached drawing 5 and attached drawing 9, sealing portion 213b and motor housing 212 circumferentially-spaced are set also by least three The lower cover screw 213c set is connected and fixed, and lower cover screw 213c is respectively positioned on the lower section of third sealing ring 213d.Motor lower cover 213 has Have with the one-to-one second connecting portion 213b2 of lower cover screw 213c, the second connecting portion 213b2 is sealing portion 213b's It is blind hole that outside, which has the second threaded hole 213b3, the second threaded hole 213b3 being threadedly engaged with lower cover screw 213c,.

In the present embodiment, it is connected and fixed between motor upper cover 211 and motor housing 212 by four the first screws, and Injection has the fixation glue with upper cover screw 211c bonding in first threaded hole 211b3；Motor lower cover 213 and motor housing 212 it Between be connected and fixed also by four the first screws；Injection has the fixation with lower cover screw 213c bonding in second threaded hole 213b3 Glue.The fixation glue in fixation glue and the second threaded hole 213b3 in first threaded hole 211b3, be able to ascend motor upper cover 211, The installation strength of motor housing 212 and motor lower cover 213.

Refering to attached drawing 8 and attached drawing 9, motor lower cover 213 has downwardly convex leading part 213e, and leading part 213e is in direction There is the side lateral wall of wire lead slot 213e1 and leading part 213e to offer and wire lead slot 213e1 company for the side of second seal chamber Logical lead opening 213e2.Motor lower cover 213 is equipped with rubber sealing block 218, rubber sealing block 218 in wire lead slot 213e1 Sealed passage 218a with power supply machine power supply line hermetically passing, sealed passage 218a have at least one bending part 218a1.? In the present embodiment, motor lower cover 213 has two power supply lines, so that there are two the sealings being parallel to each other for the tool of rubber sealing block 218 Channel 218a, and two sealed passage 218a all have a bending part 218a1.

Motor lower cover 213 has the lower limit slot of the lower bearing installation for rotor 22 in the side towards the second seal chamber 213f, motor lower cover 213 have in the other side and the lower limit slot 213f detection counterbore 213g being connected to and are sealedly attached to detection Detection end cap 219 on counterbore 213g.Wherein, detection end cap 219 and detection counterbore 213g are threadedly coupled, and detect end cap 219 Bottom have sheet and facilitate rotation detection end cap 219 rotation card slot 219a.

Refering to attached drawing 5, motor housing 212 is additionally provided with a mounting bracket 5, and mounting bracket 5 has and motor housing 212 The fixed part 51 to fit, fixed part 51 are threadedly secured on 212 body of motor housing by third screw 52.Motor in order to prevent There are leak gaps for the threaded hole being threadedly engaged in shell 212 with third screw 52, therefore squeeze into threaded hole in third screw 52 Before interior, marine glue can be smeared in threaded hole, and after third screw 52 is squeezed into, in the screw thread of the inner wall of motor housing 212 Marine glue is smeared at hole.

Embodiment 2:

In conjunction with attached drawing 1 to attached drawing 11, the RO pump of one of the present embodiment preventing water leakage is in addition in detection end cap 219 and embodiment 1 Preventing water leakage RO pump it is different outer, remaining structure feature is identical as in embodiment 1.

And combining detection end cap 219 and detection the counterbore 213g refering to attached drawing 12, in the present embodiment is also to be threadedly coupled to match It closes, and detects end cap 219 and offer detection blind hole 219b in the side towards the second sealing 42 and be installed on detection blind hole 219b The testing agency 6 at place.The bottom of detection blind hole 219b is provided with the detection port 219c through detection end cap 219, testing agency 6 It is installed on the sliding head 61 of detection blind hole 219b including sealing sliding, is set to sliding head 61 and is stretched out by detection port 219c It detects the detection lug 63 of end cap 219 and is connected to sliding head 61 simultaneously and detects the compressed spring 62 between blind hole 219b.Its In, detection lug 63 and detection through-hole are adapted, and the rotation of detection end cap 219 can be realized by rotating detection lug 63.

In the present embodiment, detection lug 63 is disposed with zone of alarm and normal area along the direction far from sliding head 61, and Zone of alarm outer surface takes on a red color, and normal area outer surface is in green.Under normal conditions, under the action of compressed spring 62, zone of alarm is located at It detects on the inside of port 219c；When in the second sealed chamber there are water leakage and be in high pressure conditions when, the second seal chamber is indoor Hydraulic pressure will slide head 61 and compress downwards, and zone of alarm is extruded detection port 219c, the diaphragm in warning user RO pump 13 is damaged.

Embodiment 3:

The RO of one of the present embodiment preventing water leakage is pumped other than being additionally provided with sealant layer, remaining structure with embodiment 2 Preventing water leakage RO pump is identical.

One of the present embodiment preventing water leakage RO is pumped at the connection gap of pump head shell 11 and motor upper cover 211, motor It is coated at upper cover 211 and the connection gap of motor housing 212, at the connection gap of motor housing 212 and motor lower cover 213 One layer of sealant layer, wherein the width of sealant layer is not less than 1cm.

Embodiment 4:

The RO of one of the present embodiment preventing water leakage is pumped other than being additionally provided with seal rubber sleeve, remaining structure with embodiment 2 Preventing water leakage RO pump is identical.

The RO pump of one of the present embodiment preventing water leakage installs outer at rear in group, is coated with one layer of sealing in its outer surface Glue forms the seal rubber sleeve integrally arranged, and seal rubber sleeve is at detection end cap 219, water supply connector 113 and water outlet connector 114 It is provided with port, to guarantee the normal work of the RO pump of preventing water leakage.

Since seal rubber sleeve is wholely set, so that seal rubber sleeve improves the structural strength of entire preventing water leakage RO pump, After 13 breakage of diaphragm in RO pump, the water in pump head enters in first annular seal space room 41 and the second sealed chamber and has Certain pressure, seal rubber sleeve are able to maintain the whole of pump oil shell, motor upper cover 211, motor housing 212 and motor lower cover 213 Body reduces the probability that disintegration or leak occur for RO pump.

This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this All by the protection of Patent Law in the scope of the claims of invention.

Claims

1. A leak-proof RO pump, comprising an RO pump head (1), a drive motor (2), a three-cam water-pulling bracket assembly ( 3), the RO pump head (1) includes a pump head housing (11), a control body (12) and a diaphragm (13) installed in the pump head housing (11), and the drive motor (2) comprising a motor housing (21), a rotor (22) and a stator (23) mounted on the motor housing (21), the motor housing (21) comprising a motor upper cover (211), a motor housing (212) ) and a lower motor cover (213), the motor upper cover (211) has an output through hole through which the rotating shaft of the rotor (22) passes, characterized in that,

After the motor upper cover (211) is connected with the pump head housing (11), a first airtight chamber for the installation of the three-cam water-pulling bracket assembly (3) is formed;

The connection between the motor upper cover (211) and the pump head housing (11) is provided with a first sealing structure that prevents the water in the first closed chamber from leaking from the connection between the two;

After the motor upper cover (211), the motor casing (212) and the motor lower cover (213) are connected, a second closed chamber (42) for installing the rotor (22) and the stator (23) is formed;

A second sealing structure for preventing water in the second sealed chamber from leaking from the connection between the motor upper cover (211) and the motor housing (212) is provided at the connection;

A third sealing structure for preventing water in the second sealed chamber from leaking from the connection between the motor lower cover (213) and the electrolysis housing is provided.

2. A water-leakage-proof RO pump according to claim 1, wherein the pump head housing (11) and the motor upper cover (211) are connected and fixed by at least three first bolts (215), so that the The pump head housing (11) has a first through hole (117) through which the screw rod (216) of the first bolt (215) passes, and the motor upper cover (211) has a first through hole (117) that is the same as the first through hole (117). A corresponding first threaded hole (211b3); the first sealing structure includes a first sealing groove (214a) formed on the end surface of the motor upper cover (211) that is in contact with the pump head housing (11) and a mounting The first sealing ring (214b) in the first sealing groove (214a).

3. A water-leakage-proof RO pump according to claim 1, wherein the bottom of the motor upper cover (211) has an upper sealing portion (211b) inserted into the top of the motor housing (212), and the first The second sealing structure includes a second sealing groove (211b1) circumferentially formed on the outer side wall of the sealing portion of the upper cover, and a second sealing ring (211b4) installed in the second sealing groove (211b1). The second sealing ring (211b4) ) and the inner wall of the motor housing (212) in circumferential abutment; the top of the motor lower cover (213) has a lower sealing portion (213b) inserted into the top of the motor housing (212), and the third sealing structure includes a circumferential To the third sealing groove (213b1) opened on the outer side wall of the lower sealing part (213b) and the third sealing ring (213d) installed in the third sealing groove (213b1), the outer part of the third sealing ring (213d) The ring is in circumferential contact with the inner wall of the motor housing (212).

4. A water-leakage-proof RO pump according to claim 3, wherein the motor upper cover (211) and the motor lower cover (213) are connected and fixed by at least two screws (216), and the motor The lower cover (213) has a fixing counterbore (213a) through which the screw rod (216) passes, and the motor upper cover (211) has a fixing counterbore (213a) corresponding to the fixing counterbore (213a) one-to-one and threadedly matched with the screw rod (216) A stud (211a); the upper sealing portion (211b) and the motor housing (212) are also connected and fixed by at least three upper cover screws (211c) arranged at intervals in the circumferential direction, and the upper cover screws (211c) are all is located above the second sealing ring (211b4); the lower sealing part (213b) and the motor housing (212) are also connected and fixed by at least three lower cover screws (213c) arranged at intervals in the circumferential direction, the lower cover screws (213c) are located below the third sealing ring (213d).

5. A water-leakage-proof RO pump according to claim 4, wherein the motor upper cover (211) has a first connecting portion (211b2) corresponding to the upper cover screw (211c) one-to-one, so The first connecting part (211b2) has a first threaded hole (211b3) on the outer side of the upper sealing part (211b) that is threadedly matched with the upper cover screw (211c), and the first threaded hole (211b3) is a blind hole; The motor lower cover (213) has a second connection part (213b2) corresponding to the lower cover screw (213c) one-to-one, and the second connection part (213b2) has a lower cover screw (213b2) on the outer side of the lower sealing part (213b). 213c) A second threaded hole (213b3) for threaded engagement, the second threaded hole (213b3) is a blind hole.

6. A water-leakage-proof RO pump according to claim 5, characterized in that, the first threaded hole (211b3) is injected with a fixing glue bonded to the upper cover screw (211c); the second The threaded hole (213b3) is injected with a fixing glue for bonding with the lower cover screw (213c).

7. A water-leakage-proof RO pump according to claim 1, wherein the motor lower cover (213) has a lead portion (213e) protruding downward, and the lead portion (213e) is facing A lead groove (213e1) is provided on one side of the second sealed cavity, and a lead opening (213e2) communicated with the lead groove (213e1) is formed on one side of the lead portion (213e), and the motor lower cover (213) is located in the lead groove (213e1). A rubber sealing block (218) is installed in the groove (213e1), the rubber sealing block (218) has a sealing channel (218a) through which the power cord of the motor is sealed, and the sealing channel (218a) has at least one bent portion (218a1).

8. The water-leakage-proof RO pump according to claim 1, wherein the motor lower cover (213) has a lower limit for the lower bearing of the rotor (22) on the side facing the second sealing cavity A position slot (213f), the motor lower cover (213) has a detection counterbore (213g) communicating with the lower limit slot (213f) on the other side and a detection end cover (213g) sealingly connected to the detection counterbore (213g). 219), the detection end cover (219) is detachably installed in the detection counterbore (213g).

9 . The water-proof RO pump according to claim 8 , wherein the detection end cover ( 219 ) is provided with a detection blind hole ( 219 b ) on the side facing the second sealing chamber and is installed on the detection end cover ( 219 ). The detection mechanism (6) at the blind hole (219b), the bottom of the detection blind hole (219b) is provided with a detection through hole (219c) penetrating the detection end cover (219), and the detection mechanism (6) includes a sealing slide. The sliding head (61) installed in the detection blind hole (219b), the detection piece (63) arranged on the sliding head (61) and protruding from the detection end cover (219) through the detection port (219c), and A compression spring (62) connected between the sliding head (61) and the blind detection hole (219b).

10. A water-leakage-proof RO pump according to claim 1, characterized in that, at the connection gap between the pump head housing (11) and the motor upper cover (211), the motor upper cover (211) and the motor A layer of sealant is applied at the connection gap of the housing (212) and the connection gap between the motor housing (212) and the lower motor cover (213), and the width of the sealant layer is not less than 1 cm.