CN107192575B - A sampling device - Google Patents

Abstract

The invention discloses a sample cutting device, which comprises a main sample tube and at least one secondary sample tube, and the secondary sample tube and the main sample tube are connected by a locking assembly; the locking assembly includes a locking female joint and a locking male joint, the locking female joint is provided with a locking groove, and the locking male joint is provided with a locking key that can be engaged with the locking groove; the locking assembly also includes a locking buckle that can prevent the locking key from coming out of the locking groove. The sampling device provided by the present invention can effectively increase the sampling depth of the sampling tube, improve the descending efficiency of the sampling tube during the sampling process, and further improve the reliability of the connection of the sampling tube and the service life of the sampling device. The main sampling tube and the secondary sampling tube can be quickly connected and connected disassembly, saving the overall time of the sampling process.

Description

A sampling device

technical field

The invention relates to the field of sample cutting equipment, in particular to a sample cutting device.

Background technique

At present, most of the grain sampling tubes sold on the market are ordinary stainless steel light tubes, which are refitted by simple welding. During the descending process of the existing sampling pipe from the deep layer of the grain pile, the connection of the sampling pipe is limited by the screw connection. During the descending process, the sampling pipe can only rotate downward in one direction, or rely on the negative pressure principle of the air pump to suck out the grain grains at the mouth of the pipe while moving downward under the action of external force.

However, when the direction of rotation of the sample pipe was opposite to the direction of rotation when going down, the thread at the joint of the sample pipe would become loose, causing the sample pipe to fall off and be buried in the grain pile. At the same time, the structure of the existing sampling tube is simple, and it is difficult to change the internal structure of the grain pile and the distribution of the force on the grain pile after the sampling reaches a certain depth, resulting in a limited sampling depth of the sampling tube. Disassemble.

At the same time, the existing sampling tube needs to be disassembled frequently. After frequent tightening and loosening of the threaded connection, the connecting thread of the sampling tube will be worn, resulting in loose connection and air leakage during sampling, resulting in a decrease in sampling efficiency or even failure to sample; Labor intensity is high.

Therefore, how to improve the sampling efficiency, service life and reliability of the sampling device is a technical problem to be solved by those skilled in the art.

Contents of the invention

The object of the present invention is to provide a sample cutting device, the sample cutting device can make the sample tube rotate clockwise and counterclockwise when the sample goes down through the setting of the locking device, and the phenomenon that the sample tube will not fall off will not occur, the sample cutting speed can be effectively improved, and the reliability of use can be improved.

To achieve the above object, the present invention provides the following technical solutions:

A sampling device, comprising a main sampling tube and at least one secondary sampling tube, the secondary sampling tube is connected to the main sampling tube through a locking assembly; the locking assembly includes a locking female joint and a locking male joint, the locking female joint is provided with at least one locking groove, and the locking male joint is provided with at least one locking key that can be engaged with the locking groove; the locking assembly also includes a locking buckle that can prevent the locking key from loosening out of the locking groove.

Preferably, the locking female joint is cylindrical, the locking groove is L-shaped, and the locking groove is arranged on the inner peripheral portion of the locking female joint. The locking groove includes an axial section extending along the axial direction of the locking female joint and allowing the locking key and the locking buckle to guide in the axial direction, and a circumferential section where the locking key can be snapped in. The axial section can allow the locking key to slide to the converging common part of the axial section and the circumferential section.

Preferably, the locking female joint is fixedly installed at the tail end of the main sample tube, the locking male joint is fixedly installed at one end of the secondary sample tube, and the end of the secondary sample tube away from the locking male joint is also installed with a locking female joint that can be snapped together with the locking male joint of the adjacent secondary sample tube.

Preferably, at least one helical groove with the same helical direction is provided on the outer peripheral parts of the main sampling tube and the secondary sampling tube.

Preferably, the cross section of the spiral groove is arc-shaped or triangular.

Preferably, a sealing gasket is further provided between the locking male joint and the locking female joint.

Preferably, it also includes a sample suction assembly that can penetrate through the inside of the secondary sample pipe and the main sample pipe. The sample suction assembly includes a sample suction cylinder and at least one suction push rod. Both ends of the sample suction push rod are provided with external threads of the same size.

Preferably, the main sample tube or the secondary sample tube used to install the locking buckle is also equipped with an elastic member, the elastic member abuts against the locking buckle to provide a force for the locking buckle, and the elastic member can press the locking buckle into a position flush with the bottom end surface of the locking groove after the locking key snaps into the locking groove to prevent the locking key from loosening out of the locking groove.

Preferably, the main sampling tube or the secondary sampling tube for installing the locking buckle is further provided with a retaining ring for supporting the elastic member, one end of the elastic member abuts against the retaining ring, and the other end abuts against the locking buckle.

Preferably, the elastic component is a spring.

The sampling device provided by the present invention includes a main sampling tube and at least one secondary sampling tube, the secondary sampling tube is connected to the main sampling tube through a locking assembly; the locking assembly includes a locking female joint and a locking male joint, the locking female joint is provided with at least one locking groove, and the locking male joint is provided with at least one locking key that can be engaged with the locking groove; the locking assembly also includes a locking button that can prevent the locking key from loosening out of the locking groove. In the sampling device, through the setting of the locking component, when the main sampling tube and the secondary sampling tube are descending into the grain pile, the sampling device as a whole can realize counterclockwise and clockwise, and the connection between the main sampling tube and the secondary sampling tube will not loosen or fall off, effectively increase the sampling depth of the sampling tube, improve the descending efficiency of the sampling tube during the sampling process, and further improve the reliability of the connection of the sampling tube and the service life of the sampling device. In addition, the main sampling tube and the secondary sampling tube can be quickly connected and disassembled, saving the total time of the sampling process. At the same time, the locking female joint and the locking male joint also improve the firmness of cooperation between the joints through the setting of the locking buckle, reduce the labor intensity of sampling, and improve the degree of mechanization of sampling.

In a preferred embodiment, the outer peripheral parts of the main sampling tube and the secondary sampling tube are provided with helical grooves with the same helical direction. The above settings can make the sampling device adapt to a more complex and compact grain layer environment. At the same time, the rotation of the spiral groove can also effectively shorten the descending time of the sampling and improve the sampling efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other accompanying drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic diagram of the explosive structure of a specific embodiment of the sampling device provided by the present invention;

Fig. 2 is a schematic diagram of the assembly structure of a specific embodiment of the sampling device provided by the present invention;

3 is a schematic diagram of the exploded structure of the locking assembly of the sampling device provided by the present invention;

4 is a schematic diagram of the assembly structure of the locking assembly of the sampling device provided by the present invention;

Fig. 5 is a schematic structural view of the sample suction assembly of the sampling device provided by the present invention;

Fig. 6 is a schematic diagram of the assembly structure of another specific embodiment of the sampling device provided by the present invention;

Among them: 1- main sample tube, 11- spiral groove of main sample tube, 12- sample port, 13- sample head, 2- first locking female connector, 3- sealing washer, 4- locking male connector, 41- locking key, 5- locking buckle, 6- elastic part, 7- secondary sample tube, 71- secondary sample tube spiral groove, 72- retaining ring, 8- second locking female connector, 9- suction cylinder, 91- suction port, 10- suction pusher Rod, 101-thread sleeve, 102-nut.

Detailed ways

The core of the present invention is to provide a sample cutting device, which can avoid the phenomenon that the sample tube falls off, effectively increase the sample cutting speed, and significantly improve the reliability and service life.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1 to 6, Figure 1 is a schematic diagram of the exploded structure of a specific embodiment of the sample cutting device provided by the present invention; Figure 2 is a schematic diagram of the assembly structure of a specific embodiment of the sample cutting device provided by the present invention; Figure 3 is a schematic diagram of the exploded structure of the locking component of the sample cutting device provided by the present invention; Schematic diagram of the assembly structure.

In this embodiment, the sampling device includes a main sampling tube 1, at least one secondary sampling tube 7 and a locking assembly.

Wherein, the slave sample pipe 7 is connected with the main sample pipe 1 through a locking assembly, and the sample head 13 of the main sample pipe 1 is conical and is used for inserting into the grain pile. When there are multiple slave sample pipes 7, the adjacent slave sample pipes 7 are also connected by a locking assembly to increase the length of the entire sample device, thereby effectively increasing the sample depth of the sample device.

Specifically, the locking assembly includes a locking female joint and a locking male joint 4, the locking female joint is provided with at least one locking groove, and the locking male joint 4 is provided with at least one locking key 41 which can be engaged with the locking groove.

Preferably, in order to ensure the connection stability of the locking female joint and the locking male joint 4, several locking grooves are provided in the locking female joint, and the locking grooves are evenly distributed inside the locking female joint, the locking keys are preferably equal to the number of locking grooves, and the locking keys and the locking grooves are snapped together one by one.

The locking assembly also includes a locking buckle 5 that can prevent the locking key 41 from loosening out of the locking groove. The locking buckle 5 matches the locking groove in the locking female joint. The number of teeth of the locking buckle 5 is equal to the number of locking grooves in the locking female joint. Restricted in the locking groove, preventing the locking key 41 from loosening and coming out of the locking groove.

More specifically, the locking female joint is cylindrical, the locking groove is L-shaped, and the locking groove is arranged on the inner peripheral portion of the locking female joint. The locking groove includes an axial section extending along the axial direction of the locking female joint and a circumferential section for the locking key 41 to snap into. The axial section of the locking groove can guide the locking key and the locking buckle 5 in the axial direction of the locking female joint. 1 snaps into the circumferential section of the locking groove to realize the axial locking of the locking female joint and the locking male joint 4.

Further, the locking male joint 4 is also cylindrical, and one end of the locking male joint 4 is provided with several locking keys 41 in the circumferential direction.

Further, turn the locking buckle 5 so that the teeth on the locking buckle 5 are aligned with the axial section of the locking groove in the locking female joint. Under the force of the elastic member 6, such as a spring, the locking buckle 5 is matched with the locking groove, and the locking key on the locking male joint 4 is stuck and locked in the circumferential section of the locking female joint locking groove, so that the locking male joint 4 cannot rotate in the circumferential direction.

It should be noted here that the number of sample tubes 7 should be selected according to the depth of the sample, and the sample tube 7 can be used as an extended sample tube and can be assembled at will.

The sampling device, through the setting of the locking component, can enable the main sampling tube and the secondary sampling tube 7 to rotate counterclockwise and clockwise as a whole without loosening, the main sampling tube and the secondary sampling tube 7 will not fall off, effectively increase the sampling depth of the sampling tube, improve the descending efficiency of the sampling tube during the sampling process, and further improve the reliability of the connection of the sampling tube and the service life of the sampling device. In addition, the fast connection and disassembly of the main sample tube and the secondary sample tube 7 are realized through the setting of the locking component, which saves the total time of the sample cutting process. At the same time, the locking female joint and the locking male joint 4 are also provided with the locking buckle 5, which improves the firmness of cooperation between the joints, reduces the labor intensity of sample cutting, and improves the degree of mechanization of sample cutting.

On the basis of the above-mentioned embodiments, the locking female joint is fixedly installed at the tail end of the main sample tube 1, the locking male joint 4 is fixedly installed at one end of the secondary sample tube 7, and the end of the secondary sample tube 7 away from the locking male joint 4 is also installed with a locking female joint that can be engaged with the locking male joint 4 of the adjacent secondary sample tube 7.

Of course, the locking female joint can also be fixedly installed on one end of the slave sample tube 7, and the locking male joint 4 is fixedly installed on the tail end of the main sample tube 1, and the end of the slave sample tube 7 away from the locking male joint 4 is also equipped with a locking male joint 4 that can be snapped together with the locking female joint of the adjacent slave sample tube 7. At the same time, the locking buckle 5 should match the installation position of the locking male joint 4.

On the basis of the above-mentioned embodiments, the outer peripheral parts of the main sampling tube 1 and the secondary sampling tube 7 are provided with at least one spiral groove which is depressed downward and has the same helical direction. The above settings can make the sampling device adapt to a more complex and compact grain layer environment. At the same time, the rotation of the spiral groove can also effectively shorten the descending time of the sampling and improve the sampling efficiency. It should be noted here that the helical direction of the helical groove may be left-handed or right-handed. At the same time, there can be one or more spiral grooves, which can be set according to usage requirements.

Specifically, the main sampling tube 1 is provided with a main sampling tube spiral groove 11, and the secondary sampling tube 7 is provided with a secondary sampling tube spiral groove 71. When installing the locking assembly, it should be ensured that the main sampling tube spiral groove 11 and the secondary sampling tube helical groove 71 of the main sampling tube 1 and the secondary sampling tube 7 after the mating connection have the same helical direction, otherwise the force direction of the sampling tube will be affected, and the sampling efficiency will be affected.

On the basis of the above embodiments, the cross section of the helical groove is arc-shaped, as shown in FIG. 2 . Of course, the cross section of the helical groove may also be triangular, as shown in FIG. 6 .

On the basis of the above embodiments, a sealing washer 3, preferably a rubber ring, is provided between the locking male joint 4 and the locking female joint, and the sealing washer 3 is placed at the bottom of the locking female joint.

On the basis of each of the above-mentioned embodiments, it also includes a sample suction assembly that can penetrate from the sample pipe 7 and the main sample pipe 1. The sample suction assembly includes a sample suction cylinder 9 and at least one sample suction push rod 10. Both ends of the sample suction push rod 10 are provided with external threads with the same size. Sample port 12.

Specifically, when there are multiple sample suction push rods 10, adjacent sample suction push rods 10 can be connected by threaded sleeves 101 to change the length of the entire sample suction assembly. Of course, the number of sample suction push rods 10 should be determined according to the number of sample pipes 7.

More specifically, the sample suction cylinder 9 is hollow inside, with a cover at one end and no cover structure at the other end. The cover is provided with a sample suction port 91 and a hole for fixing with the sample suction push rod 10. Both ends of the sample suction push rod 10 have external threads, and the space between the sample suction push rod 10 and the sample suction cylinder 9 is fixed together by the external thread on the sample suction push rod 10 and the nut 102 located on the hole of the sample suction cylinder 9. The external thread at the end of the sample push rod 10 realizes the connection, and the sample suction component is placed inside the main sample tube 1 and the secondary sample tube 7; the main sample tube and the extended secondary sample tube are combined through a locking component to realize the extension of the sample device, and the sample suction component is embedded inside the sample tube, and the sample port is opened and closed by moving up and down driven by the sample suction push rod 10.

The above setting makes the sampling device include a sampling tube and a sample suction assembly, the sampling tube includes a main sampling tube and a secondary sampling tube, the main sampling tube and the secondary sampling tube are connected and locked into a whole through a locking component, and then the sample suction component is put into the whole body, thus forming the sampling device.

On the basis of each of the above-mentioned embodiments, an elastic member 6 is installed on the main sampling tube 1 or the secondary sampling tube 7 for installing the locking buckle 5. The elastic component 6 abuts against the locking buckle 5, and after the locking key 41 snaps into the locking groove, the locking buckle 5 is pressed into a position flush with the bottom end surface of the locking groove, and the locking key is locked and locked in the circumferential section of the locking groove to prevent the locking key 41 from loosening and coming out of the locking groove. Preferably, the elastic component 6 can be a spring, which has a high elastic coefficient, low cost, and is easy to install.

Specifically, the inner surface of the locking female joint has at least two evenly distributed and concave L-shaped locking grooves that are right-handed. Of course, the L-shaped locking grooves can also be distributed left-handed. The number of locking keys 41 is preferably the same as the number of locking grooves. The number of locking keys 41 cannot be more than the number of locking grooves.

Specifically, a first locking female joint 2 is installed on the main sampling tube 1, and a second locking female joint 8 is installed on the secondary sampling tube 7. The first locking female joint 2 and the second locking female joint 8 have the same structure.

As shown in Figure 2, the main sample tube 1 and the first locking female joint 2 are installed to form the sample tube A, and the sample tube B is formed from the sample tube 7, the locking male joint 4, the elastic member 6, the retaining ring 72 and the second locking female joint 8.

On the basis of each of the above-mentioned embodiments, the main sample tube 1 for installing the locking buckle 5 or the secondary sample tube 7 are also provided with a retaining ring 72 for supporting the elastic member 6, and one end of the elastic member 6 abuts on the retaining ring 72, and the other end abuts on the locking buckle 5. Specifically, the retaining ring 72 can be an annular metal retaining ring 72 welded on the main sample tube 1 or the secondary sample tube 7 .

On the basis of the above-mentioned embodiments, the locking buckle 5 includes an annular ring and a number of teeth on one side of the annular ring. The locking teeth can be inserted into the common position where the axial section and the circumferential section of the locking groove meet. At the same time, the locking buckle 5 can rotate around the central axis of the sample tube 7 to facilitate the rotation of the locking buckle 5, so that the locking buckle 5 is aligned with the axial section of the locking groove.

Specifically, in the sampling device provided in this embodiment, when the main sampling tube and the secondary sampling tube are connected and installed, a certain force is first applied to the locking buckle 5 on the secondary sampling tube in the direction toward the direction of the elastic member 6. Under the action of the external force, the elastic part located between the locking buckle 5 and the retaining ring 72 is compressed. The section slides toward the inside of the first locking female joint 2, and moves until the bottom of the common position where the axial section and the circumferential section of the L-shaped locking groove meet. At this time, increase the thrust applied for connection, so that the bottom of the locking male joint 4 squeezes the sealing washer 3, causing the sealing washer 3 to deform. The teeth are aligned with the axial section of the L-shaped locking groove in the first locking female joint 2, and the force applied on the locking buckle 5 is removed, and the locking buckle 5 cooperates with the axial section of the L-shaped locking groove under the action of the elastic component 6 . Then, apply a circumferential force to the locking male joint 4 to make it rotate, so that the locking key is fully matched with the circumferential section of the L-shaped locking groove. At this time, under the action of the elastic member 6, the teeth on the locking buckle 5 will completely move to the bottom where the axial section of the L-shaped locking groove and the circumferential section meet. The connection of the sampling tube and the secondary sampling tube.

Afterwards, the sample suction push rod 10 is connected to the sample suction cylinder 9 through its own thread and nut 102, and the threaded sleeve 101 is used to connect the sample suction push rod 10 to extend it. After the sample suction assembly is installed, it is placed at the bottom of the sample tube.

After the main sample tube, secondary sample tube, and sample suction components are all installed:

When only the main sampling tube participates in sampling, the external device cooperates with the first locking female joint 2 on the main sampling tube to make the main sampling tube rotate and move downward at the same time to realize the downward movement of the sampling. When the sampling head contacts the grain pile and moves to a specified depth, the external rotating device is removed, and the sample suction push rod 10 is pulled to move the sampling assembly upward to open the sampling port, and the sample is taken out through the sampling port 91 under the action of the external sampling device to complete sampling;

When the main sampling tube is connected with the secondary sampling tube for sampling, the external device can cooperate with the first locking female joint 2 on the secondary sampling tube to make the whole body rotate and move downward at the same time to realize the downward movement of the sampling. When the sampling head touches the grain pile and reaches the specified depth, remove the rotating device and use the sampling device to take samples. When it is necessary to complete deeper, only need to connect multiple secondary sampling tubes to achieve deep sampling;

After sampling at the specified depth, take out and disassemble the sampling tube. When only the main sampling tube participates in the sampling, you only need to cooperate with the first locking female joint 2 on the main sampling tube and move upward at the same time until the main sampling tube comes out of the grain pile, then close the external device and remove the main sampling tube. The formed whole rotates and moves upwards at the same time. After the sample pipe is completely out of the grain pile, stop the external device, and apply a force to the locking buckle 5 on the sample pipe towards the elastic part 6, so that the elastic part 6 generates a certain compression connection. At this time, rotate in the opposite direction to the connection and installation operation, let the sample pipe and the locking male joint 4 perform a rotational movement until the force on the locking buckle 5 and elastic part 6 is removed, and pull the sample tube outward, so that the sample tube follows the L shape in the first locking female joint 2. The axial section of the locking groove moves outward until the slave sample tube is completely disengaged from the first locking female joint 2. At this time, unscrew the sample suction push rod 10 and the threaded sleeve 101. When there are multiple slave sample tubes participating in the sample cutting, take out and disassemble and repeat the above steps for several times to complete the removal and disassembly work.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The sampling device provided by the present invention has been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (8)

1. The sampling device is characterized by comprising a main sampling tube (1) and at least one auxiliary sampling tube (7), wherein the auxiliary sampling tube (7) is connected with the main sampling tube (1) through a locking assembly; the locking assembly comprises a locking female connector and a locking male connector (4), wherein at least one locking groove is formed in the locking female connector, and at least one locking key (41) which can be matched and clamped with the locking groove is arranged on the locking male connector (4); the locking assembly further comprises a locking buckle (5) which can prevent the locking key (41) from loosening and falling out of the locking groove; the locking female connector is cylindrical, the locking groove is L-shaped, the locking groove is arranged on the inner peripheral part of the locking female connector, the locking groove comprises an axial section which extends along the axial direction of the locking female connector and can be used for the locking key and the locking buckle (5) to guide in the axial direction and a circumferential section which can be used for the locking key (41) to clamp in, and the axial section can be used for the locking key to slide to a common intersection part of the axial section and the circumferential section; an elastic component (6) is further arranged on the main sampling tube (1) or the auxiliary sampling tube (7) for installing the locking buckle (5), and the elastic component (6) is abutted with the locking buckle (5); the locking buckle (5) is rotated, so that the buckling teeth on the locking buckle (5) are aligned with the axial section of the locking groove in the locking female connector, the locking buckle (5) is matched with the locking groove under the action force of the elastic component (6), the locking key on the locking male connector (4) is clamped and locked in the circumferential section of the locking groove in the locking female connector, and the locking male connector (4) cannot rotate in the circumferential direction.

2. The sampling device according to claim 1, wherein the locking female connector is fixedly arranged at the tail end of the main sampling tube (1), the locking male connector (4) is fixedly arranged at one end of the auxiliary sampling tube (7), and the locking female connector which can be matched and clamped with the locking male connector (4) of the adjacent auxiliary sampling tube (7) is also arranged at one end of the auxiliary sampling tube (7) far away from the locking male connector (4).

3. The sampling device according to claim 1, characterized in that the outer circumference of the master sampling tube (1) and the slave sampling tube (7) are each provided with at least one spiral groove with the same spiral direction.

4. A skewer device as defined in claim 3 wherein the cross section of the helical slot is circular arc or triangular.

5. The sampling device according to claim 1, characterized in that a sealing gasket (3) is also provided between the locking male connector (4) and the locking female connector.

6. The sampling device according to claim 1, further comprising a sampling assembly capable of penetrating through the inside of the slave sampling tube (7) and the master sampling tube (1), wherein the sampling assembly comprises a sampling cylinder (9) and at least one section of sampling push rod (10), two ends of the sampling push rod (10) are respectively provided with external threads with the same size, and the sampling push rod (10) is in threaded connection with the sampling cylinder (9); the sample suction cylinder (9) is close to the sample suction push rod (10) and provided with a sample suction port (12) for materials to enter the sample suction cylinder (9).

7. The sampling device according to claim 1, characterized in that the master sampling tube (1) or the slave sampling tube (7) for mounting the locking buckle (5) is further provided with a retainer ring (72) for supporting the elastic member (6), one end of the elastic member (6) is abutted to the retainer ring (72), and the other end is abutted to the locking buckle (5).

8. The sampling device according to claim 7, wherein the resilient member (6) is a spring.