JPS59103100A - Measuring type distributing valve - Google Patents

Abstract

PURPOSE:To carry out extraction of air simply, by providing a holding device of a directional control valve holding the directional control valve in a connecting state at the time of operation of an oil supply pump. CONSTITUTION:A valve stem 5a is provided on a primary side of a directional control valve 5 in a protruded state, a collar-shaped connecting part 14 is provided on the valve stem 5a, and the connecting part 14 is connected with a holding means 15 of the directional control valve to be constituted with a connecting part 15b provided with a male screw part 15a making screw connection with a female screw part 16 of a main body 4 of a distributing valve and a threaded component 15c consisting of a applying part 15d of a wrench connecting with the connecting part by a connecting pin 15c. With this construction, when an oil supply device such as a pump is made to operate continuously under this state, extraction of air can be done simply by filling oil within a branch duct in a moment as the directinal switching valve 5 can be held in a communicating state by operating the switching valve holding device 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metering type distribution valve used in an oil supply system that intermittently supplies a fixed amount of lubricating oil to operating parts of machine tools and the like.

This type of metering type distribution valve has a metering chamber formed between an upstream boat and a secondary boat, and a metering chamber that is connected to either the primary boat or the secondary boat depending on the pressure difference between those boats. It is equipped with a switching valve that selectively communicates with the force 1,
When the oil supply pump is in operation, the measuring chamber is filled with lubricating oil, and when the pressure is released, the lubricating oil in the measuring chamber is transferred to the secondary boat. In this way, a certain amount of lubricating oil is intermittently pumped by repeating the operation and depressurization of the oil supply pump, while at the same time, for example, installing new branch pipes or assembling machinery. , When performing a trial run, etc., fill the piping from the secondary side boat to the previous refueling point with oil as a so-called air bleed, and
A drawback is that it takes a long time to fill the lubricating surface of the machine tool with oil. By the way, assuming that the amount of oil supplied for - times is 003cc, the oil supply pump must be operated 2355 times in order to fill a branch pipe with an inner diameter of 3 mm and a length of 1 m with lubricating oil and completely bleed the air. .

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a metering type distributing valve that can quickly fill the piping system with oil and easily bleed air before starting refueling.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a first embodiment of the distribution valve of the present invention, in which three secondary boats 2. ... shows a triple structure in which refueling points B, ... of machines, etc. are connected, but the number of secondary boats 2 can be arbitrarily set regardless of this invention. However, this does not affect the gist of the invention described below. Therefore, the present invention will be described in detail below with a part thereof shown in cross section.In the distribution valve main body 4, a primary side boat 1 and a secondary side boat 2 are formed which communicate with each other orthogonally. has been
In this case, a passage 3 is formed continuous with the secondary boat 2. In this passage 3, a truncated cone-shaped umbrella-type switching valve 5 is disposed, the diameter of which decreases toward the downstream side. The switching valve 5 is made of a flexible member such as rubber, and -
The lubricating oil is deformed by the pressure of the liquid flowing in from the next boat 1 and communicates with the passage 3, so that the lubricating oil flows into the cylinder chamber 6, which has a larger diameter than the passage 3 connected to the secondary side of the switching valve 5. ing. A metering piston 7 is fitted into the cylinder chamber 6 and is slidable watertightly against the inner wall surface of the cylinder chamber 6, and between the piston 7 and the primary side of the cylinder chamber 6. A measuring chamber 8 is already formed. In this case, the piston 7 includes a piston body 7b having a hole 7a for slidably fitting into the outer circumferential surface of a sleeve pin 9, which will be described later, and a lip plate fixed to the primary side of the piston body 7b. Q also consists of kink 7c.

A sleeve pin 9 disposed in the center of the cylinder chamber 6
has a passage 9a that communicates the downstream boat 1 and the secondary boat 2, and has a small diameter portion 9b formed at the downstream end. The sleeve pin 9 is held by a guide 11 that engages with the passage 3 and the stepped portion 10 of the cylinder chamber 6, and a metering nipple 12 that is screwed onto the secondary boat 2. Note that the guide 11 has the primary side and the measuring chamber 8.
A passage 11a communicating with the sleeve pin 9 is formed in the long metering nipple 12, and this passage 2' is substantially connected to the passage 9a of the sleeve pin 9. Further, a spring 13 is compressed between the metering nipple 12 and the piston 7, which forms the secondary boat 2, and the elastic force of the spring 13 always moves the piston 7 to the primary side. Being pressed.

On the other hand, a valve stem 5a protrudes from the primary side of the switching valve 5, and a collar-shaped locking portion 14 is provided on the valve stem 5a. This locking portion 14 engages with switching valve holding means 15, which will be described later, to hold the switching valve 5 in a communicating state.

The switching valve holding means 15 has an engaging portion 15b having a male threaded portion 15a that is threadedly coupled to a female threaded portion 16 of the distribution valve body 4 opened at a portion coaxially facing the passage 3, and a connecting pin 15c. The spanner hook connected to the retaining portion 15b is constituted by a screw member 15e consisting of a portion 15cl. In this case, the retaining portion 15b is 0
An engaging stepped portion 15b' that protrudes into the passageway 3 side via the ring 15f and protrudes inward from the protruding end thereof is adapted to engage with the locking portion 14, and A valve splinter 17 is compressed between the plunge-side end of the engaging portion 15b and the switching valve 5, and the elastic force of the valve splinter 17 causes the switching valve 5 to connect to the small diameter portion of the sleeve pin 9 under normal conditions. One passage 9a can be blocked by coming into contact with 9b.

In addition, 18 is 0 which is interposed in the attachment part of the metering nipple 12.
The link 19 is a 01J link interposed at the connecting portion between the engaging portion 15b and the spanner hook portion 15d.

In the distribution valve of the present invention configured as described above, the lubricating oil pumped by the pump A flows from the downstream side boat 1 into the passage 3, and the flexible switching valve 5 is controlled by the liquid pressure. By pressing and deforming the guide 11, the lubricating oil flows into the measuring chamber 8 through the passage 11a of the guide 11. At this time, since a predetermined amount of lubricating oil flows into the metering chamber 8, the piston 7 moves upward in the figure against the splinter 13 and comes into contact with the metering nipple 12. After a certain amount of lubricating oil has been metered into the metering chamber 8 in this way, when the pressure on the next side is released, the elastic force of the splinter 13 causes the piston 7 to
is pressed downward, and as a result, the switching valve 5 moves downward against the valve splinter 17 via the lubricating oil in the metering chamber 8. Then, the coupling between the sleeve pin 9 and the switching valve 5, which had been in contact with each other until now, is released, and the lubricating oil in the metering chamber 8 flows through the gap into the passage 9e of the sleeve pin 9, reaching a predetermined oil supply point B. It is supplied to After a certain amount of oil supply process is completed, the switching valve 5 is switched to the valve splinter 1.
It returns due to the elastic force of step 7 and repeats the same operation as described above. Note that this operation method is referred to as a post-release method. If this distribution valve is newly installed and piping is connected between pump A and oil supply point B, it is necessary to initially fill the piping system with oil and bleed air. Therefore, in this invention, when the spanner hook of the switching valve holding means 15 is applied to the part 1'5d and turning the switching valve holding means 15 and moving it downward due to the relationship of the threaded part, the switching valve holding means The stepped portion 15b' of the engaging portion 15b of 15 engages with the locking portion 14 of the switching valve 5 and pulls the switching valve 5 downward to maintain the communication state.
By continuously operating pump A, oil can be continuously supplied from this distribution valve to oil supply point B, and the air in the branch pipe can be quickly vented.

FIG. 2 shows a second embodiment of the distributing valve of the present invention, which is different from the later discharge method described in the first embodiment. A modification is shown in which the first-out method is adopted and the configurations of the switching valve 5 and the piston 7 are changed. That is, the piston 7 is equipped with an 01J link 20 for sliding watertightly inside the cylinder chamber 6.
A communicating passage 21 that communicates between the downstream boat 1 and the secondary boat 2 is formed in ', and a sleeve 22 that is continuous with this communicating passage 21 and extends into the primary side, that is, the passage 3, is formed. The switching valve 5 is integrally or integrally provided with a blocking valve part 23 protruding into the sleeper 22, so that the communicating passage 21 can be selectively blocked by the blocking valve part 23. In addition, reference numeral 24 is a valve seat backing of the above-mentioned blocking valve portion 23.

Note that the configuration other than the above is the same as the first embodiment, so
Identical parts are given the same reference numerals and their explanations will be omitted.

In the distribution valve of the second embodiment configured as described above, when lubricating oil flows in from the downstream boat 1, (
The switching valve 5 is elastically deformed by the liquid pressure of the lubricating oil.
Therefore, the lubricant oil passes through the gap between the passage 3 and the switching valve 5.
By pushing up the piston 7' against the pull 13, a predetermined amount of lubricating oil is measured. Next, when the negative side is depressurized,
The piston 7' is pushed down by the elastic force of the splinter 13. At this time, the switching valve 5 is moved downward due to the pressure difference between the primary side and the secondary side, so the blocked state of the blocked valve part 23 is released, and the lubricating oil in the metering chamber 8 is transferred to the communicating path 2 of the piston 7'. A lead-out chamber 25 through which the splinter 13 is installed
flow inside. Then, when lubricating oil is supplied from the primary boat 1 and the piston 7' is moved upward in the same manner as described above, the lubricating oil in the outlet chamber 25 is supplied from the secondary boat 2 to a predetermined oil supply point. It is designed to be refueled by B.

In the distribution valve of the second embodiment, when the branch pipe is filled with oil and air is vented, the switching valve holding means 15 is rotated by applying a wrench to the wrench hook j1sa, as in the first embodiment. As a result, the engaging step portion 15b' of the switching valve holding means 15 and the engaging portion 14 of the switching valve 5 are engaged, and the switching valve 5 is moved.

FIGS. 3 and 4 show a third embodiment of the distribution valve of the present invention, in which the switching valve holding means is constituted by a knock rod with a knob, and a cross-sectional view of the main part and a cross-section of the holding state taken along the line IV-IV. A diagram is shown. That is, a locking flange 27 is formed on the valve stem 5a of the switching valve 5, and a mounting hole 28 is bored in the distribution valve body 4 in a direction substantially perpendicular to the valve stem 5a. A knock rod 29 that can engage with the stop flange 27 is slidably fitted therein. In this case, a two-pronged engagement portion 29a that can engage with the locking flange 27 is formed at the tip of the knock rod 29, that is, the valve stem side, and a knob 29b is formed at the other end, that is, the side that protrudes from the distribution valve body 4. is formed. The knock rod 29 with a knob is always attached to the locking flange 2 between the knob 29b and the distribution valve body 4.
A spring 30 is compressed to separate the spring 30 from the spring 7.

In the switching valve holding means 15 configured as described above,
When the knob 29b is pressed against the spring 30, the two-pronged retaining portion 29a engages with the locking flange 27, so by continuously operating the pump A in this state, the screw 7
' increases due to the pressure, but the switching valve 5
Since this is held, the closing valve portion 23 opens and oil continues to flow. Therefore, the branch pipe is quickly filled with oil and air is removed in a short time.

Note that the switching valve holding means 15 shown in the third embodiment can be used in both the last delivery method of the first embodiment and the first delivery method of the second embodiment. This example shows the case where the first-out method is used. Therefore, since the parts other than the switching valve holding means 15 are the same as those in the second embodiment, the same parts are given the same reference numerals and the explanation thereof will be omitted.

5 to 7 respectively show the fourth distribution valve of the present invention.
This is a sixth embodiment to show another form of the switching valve holding means 15. In this case, the distribution valve can be used in either the first-out type or the last-out type, but the drawings show the case of the last-out type shown in the first embodiment.

The switching valve holding means 15 of the fourth embodiment shown in FIG. 5 slidably penetrates an operating frame 31 connected to the switching valve 5 via a guide hole 32 bored in the distribution valve body 4, and In this case, a knob 31a is formed at the outer end projecting from the distribution valve body 4, and in order to fill the branch pipe 1 with oil, the knob 31a can be pulled downward to bring the distribution valve 5 into a communicating state. The switching valve holding means 15 of the fifth embodiment shown in FIG.
A long shaft holder 3 is connected to the distribution valve 5 from the outside of the distribution valve body 4 through a guide hole 32 formed in the distribution valve body 4.
3 and Nara I.34 screwed onto this port 33. In this case, the Natsuto 5 will use the Porto 33 during normal operation.
The main body 4 is moved toward the head side, that is, downwardly, and the main body 4 is moved as shown in the figure to prevent the port 33 from rising when air is vented.
It can be tightened against the wall. In addition, the sixth
In the embodiment, the switching valve holding means 15 includes an iron core 36 that passes through a guide hole 32 formed in the 1-distribution valve body 4 and is connected to the distribution valve 5, and is mounted on the outer side of the 5-distribution valve body 4. It is designed to be driven by a solenoid 37.

8 to 10 show a seventh embodiment of the distribution valve of the present invention, in which the cylinder chamber 6 is formed from the passage 3 via a branch passage 38. In other words, a cylinder chamber 6 is formed on the secondary side of the switching valve 5 disposed in the passage 3 via a branch passage 38, and a cylinder chamber 6 is slidably slidable in a watertight manner into the cylinder chamber 6. It has a structure in which a spring 13 is compressed between the fitted piston 7'' and a metering nipple 12' installed at the open end of the cylinder chamber 6, and the lubricating oil flowing from the downstream boat 1 is switched. The valve 5 is elastically deformed to flow into the metering chamber 8 via the branch passage 38 (see FIG. 9).

Push the piston 7″ against the spring 13 into the metering nipple 1.
2' and moves to measure a certain amount. Next, when the pressure is released on the negative side, the piston γ is pressed and moved by the elastic force of the spring 13, so the lubricating oil in the metering chamber 8 flows from the branch passage 38 to the secondary side, and the predetermined oil supply is carried out. Point B is refueled.

When removing air from the piping system, the first
As shown in Fig. 0, for example, by pulling the operating rod 3 with a knob connected to the switching valve 5 against the valve spring 17, the switching valve 5 is maintained in a communicating state, so that the human pump A can be operated continuously. As a result, the branch pipe is filled with oil in a short time, and the air can be removed quickly.

In addition, in the seventh embodiment, the operating rod 31 with a knob is shown in the drawings.
Although the case where the switching valve holding means 15 is configured is shown, it does not necessarily have to be an operating stick with a knob, and for example, it can be a screw member shown in the first and second embodiments, or a screw member shown in the third embodiment. Any of the knock rod 29 with a knob, the bolt 33 shown in the fifth embodiment, or the solenoid 37 shown in the sixth embodiment can be used, and the same effect can be obtained.

As is clear from the description of the embodiments described above, according to the present invention, the switching valve holding means can be operated to maintain the switching valve in the communicating state. If the system is operated continuously, oil can be instantly filled into the branch pipe and the air can be easily removed. Therefore, when a new branch pipe is installed or when starting a test run of a machine, there is no need to operate pumps etc. intermittently for long periods of time when filling the branch pipe with oil and venting air. Excellent effects such as increasing the lifespan of pumps and the like and reducing power consumption can be obtained, and the value of its use is remarkable.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of the distribution valve of the invention, FIG. 2 is a sectional view of the second embodiment of the distribution valve of the invention, and FIG. 3 is a sectional view of the distribution valve of the invention. FIG. 4 is a cross-sectional view of main parts showing the third embodiment, FIG.
7 to 7 are sectional views of main parts showing fourth to sixth embodiments of the distribution valve of the present invention, FIG. 8 is a sectional view of a seventh embodiment of the distribution valve of the present invention, and FIG. FIG. 10 is an enlarged cross-sectional view of the main part showing the state of oil filling in the seventh embodiment. In the figure, 1 is the primary side boat, 2 is the secondary side boat, 3 is the passage, 4 is the distribution valve body, 5 is the switching valve, 5a is the valve stem, 6 is the cylinder chamber, 7.7', 7'' are the pistons , 7c is a lip para kink, 8 is a measuring chamber, 9 is a sleeve pin, 11 is a guide, 12.12' is a measuring nipple, work 3 is a spring, 1
4 is a locking part, 15 is a switching valve holding means, 15a is a male thread part, 15b is an engaging part, 15b' is a retaining step part, 15c is a connecting pin, 15d is a spanner hook part, 15e is a screw member, 16
1 is a mounting hole, 17 is a valve spring, 2o is a backing, 21 is a communication passage, 22 is a sleeve, 23 is a closing valve part, 2
5 is a lead-out chamber, 27 is a locking flange, 28 is a mounting hole, 29
is a knock rod with a knob, 30 is a spring, 31 is an operating frame,
31a is a knob, 32 is a guide hole, 33 is a bolt, 34 is a nut, 35 is a threaded guide hole, 36 is an iron core, 37 is a solenoid, and 38 is a branch path. Patent applicant Seiwa Kiki Sangyo Co., Ltd. Patent attorney Takuya Ohara 605 Procedural amendment letter issued) January 1981 128 1. Indication of the case 1982 Patent Application No. 179381 2. Name of the invention Metering type dispensing valve 3. Relationship with the case of the person making the amendment Patent applicant: Keisuke Hoben, representative of Seiwa Kiki Sangyo Co., Ltd., 2-2-16 Azukizawa, Itabashi-ku, Tokyo 5. Date of amendment order (self-initiated) Showa year, month, day (shipped) day; month, day of the same year)
6. “Claims” and “Detailed Description of the Invention” of the specification to be amended;
(1) The scope of claims is amended as shown in the attached sheet. (2) In the specification, page 7, line 20, [passage 9eJ]
Corrected to aisle 9aj. (3) Correct “Natsu 5” in line 12 of page 13 of the specification to “Natsu 311.” (4) Insert the legal text between lines 13 and 14 of page 15 of the specification. "Furthermore, FIG. 11 shows an eighth embodiment of the present invention which is a slight modification of the second embodiment described above. That is, in this eighth embodiment. A communication passage 2 for the piston 7' is disposed in the chamber 25 so that one end thereof can come into contact with the head of the closure valve section 23.
A dowel pin 40 is slidably inserted into the measuring nipple 1 and whose other end extends through the measuring nipple 12 and projects to the outside. Therefore, the closing valve part 23 is connected to the switching valve 5 and the valve spring 17 via this knock pin 40.
By holding the blockage valve part 23 in a state away from the valve seat backing 24 by pushing it down against the It enters the outlet chamber 25 through the gap between the valve part 23 and the sleeve 22 and the gap between the dowel pin 40 and the communication path 21, and passes through the communication hole 41 bored in the metering nipple 12 to the secondary port 2. Since the air is fed under pressure toward the distribution valve 4, the air in the distribution valve 4 and the branch pipe (not shown) connected thereto can be quickly vented. Further, according to this embodiment, during normal intermittent lubrication operation, the knock pin 40 moves upward together with the switching valve 5, the closing valve part 23, and the piston 7' due to the pressure of the lubricating oil supplied from the downstream port 1. Since the dowel pin 40 is moved and held in the raised position by friction with the O-ring 42 provided on the metering nipple 12, the operating state of the distribution valve 4 can be determined from the height position of the knock pin 40. (5) "It is a cross-sectional view" on page 16, line 17 of the specification.
11 is a sectional view showing the eighth embodiment of the distribution valve of the present invention. It is corrected as J. (6) As shown in red ink on the attached sheet, refer to FIG. In addition to adding the reference number 7, the indication line of the reference number 9 is added. (7) As shown in red on the attached sheet, the reference number 7 shown in Figure 2 of the drawings is corrected to 7'. ( 8) Add Figure 11 as shown in the attached sheet. Above attached sheet (Japanese Patent Application No. 179381) ``2. Claims: A primary side port connected to an oil supply pump including a pressure relief valve;
A secondary port that communicates with the downstream port via a communication passage, a cylinder chamber that is connected to the communication passage, and a secondary port that is slidably provided within the cylinder chamber and that is accompanied by the sliding movement. a piston forming a lubricating oil measuring chamber of a predetermined volume with the communication passage; a resilient means for biasing the piston toward the communication passage; selectively into a first operating state in which the downstream port communicates with the metering chamber or a second operating state in which the metering chamber and the secondary port communicate with each other depending on the pressure difference with the side port; an umbrella-type switching valve that operates, and when the oil supply pump is in operation, the switching valve is in a first operating state, and lubricating oil from the next port is filled into the weighing wheel while moving the piston. In a metering type distribution valve, the switching valve is in a second operating state when depressurizing, and the lubricating oil in the metering chamber is transferred to the secondary port by the urging force of the resilient means,

Claims (1)

[Claims] A primary port connected to an oil supply pump including a pressure relief valve;
A secondary boat that communicates with the downstream boat via a communication passage, a cylinder chamber that is connected to the communication passage, and a secondary boat that is slidably provided in the cylinder chamber and that is accompanied by the sliding movement. a piston forming a lubricating oil measuring chamber of a predetermined volume with the communication passage; a resilient means for biasing the piston toward the communication passage; selectively into a first operating state in which the downstream boat and the metering chamber are communicated or a second operating state in which the metering chamber and the secondary boat are communicated depending on the pressure difference with the side boat; and an actuated umbrella-type diverter valve. When the oil supply pump is in operation, the switching valve is in the first operating state, and lubricating oil from the next boat is filled into the metering chamber while moving the piston, and when depressurizing, the switching valve is in the second operating state. In the metering type distribution valve, the lubricating oil in the metering chamber is transferred to the secondary boat by the urging force of the resilient means when the oil supply pump is in operation, A metering type distribution valve, characterized in that it comprises switching valve holding means for forcibly holding the switching valve in the second operating position.