Pulse valve rapid test tool

Abstract

The utility model discloses a pulse valve fast test tooling, the test tooling includes test base, piston and gas pipeline, the test base is equipped with the chamber, the piston is movably arranged in the chamber, the piston divides the chamber into mutually independent upper chamber and lower chamber, the upper end of the piston extends out of the test base, the lower end of the piston extends out of the test base, and the upper end of the piston extends out of the gas pipeline. A first sealing ring is arranged on the upper end face of the piston, the upper end of the gas conveying pipeline protrudes out of the upper end face of the piston, and connecting threads are arranged on the outer wall of the upper end of the gas conveying pipeline and are G threads. According to the utility model, the sealing performance of the joint of the pulse valve and the test tool is realized through the piston movably arranged in the chamber, the defect that the G thread connection has no self-sealing performance is overcome, and the sealing performance is realized without winding a raw material belt or other fillers on the G thread. Rapid installation of the pulse valve is achieved, operation procedures are reduced, testing efficiency is improved, and testing cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a rapid testing tool for a pulse valve. Background Art

[0002] The electromagnetic pulse valve is an opening and closing device for the cleaning air source of the bag filter. It is controlled by the electrical signal output by the pulse jet controller to spray compressed gas to clean the filter bags.

[0003] There is a pulse valve 100, the cross-sectional view of which is shown in FIG. Figure 1 As shown, the inner wall of the connection port 101 is provided with a G thread. In order to better improve the dust cleaning performance and filter bag life of the bag filter and reduce the operating resistance, a series of pulse jet tests are required to understand the dust cleaning strength and dust cleaning effect of the filter bag. Figure 2 As shown, it is a cross-sectional view of a pulse valve quick test tool, and the outer wall of the upper end of the gas pipeline is also provided with a G thread, and the pulse valve 100 and the test tool are connected via the G thread. The G thread is a type of pipe thread, which has the advantages of easy installation and disassembly, and is widely used in the pneumatic and hydraulic industries. However, the G thread does not have self-sealing properties, and raw tape or other fillers need to be wrapped around the G thread during on-site connection to achieve sealing. When testing the pulse valve 100, wrapping raw tape around the G thread increases the operating procedures, reduces the test efficiency, and increases the test cost. In particular, for unskilled testers, there may still be leakage after one wrapping, or the connection may not be possible due to too much raw tape being wrapped, and the raw tape needs to be rewound for a second time, which seriously affects the test efficiency.

[0004] Therefore, we urgently need to design a pulse valve rapid testing tool. Utility Model Content

[0005] The utility model aims to solve the problem that the G thread connection in the prior art has no self-sealing property and raw tape or other fillers need to be wound around the G thread to achieve sealing during on-site connection, which reduces the test efficiency and increases the test cost, and proposes a pulse valve rapid testing tool.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pulse valve rapid testing tool, the test tool is equipped with an air bag, the air bag is respectively provided with an intake valve and an exhaust valve, the test tool comprises a test base, a piston and an air pipeline, the test base is provided with a chamber, the piston is movably arranged in the chamber, the piston divides the chamber into an upper chamber and a lower chamber independent of each other, a return spring is arranged in the upper chamber, the return spring is arranged between the piston and the test base, the upper end of the piston extends out of the test base, the upper end surface of the piston is provided with a first sealing ring, the air pipeline is movably sleeved in the interior of the piston, the air pipeline is fixedly connected to the test base, the upper end of the air pipeline protrudes from the upper end surface of the piston, and the outer wall of the upper end of the air pipeline is provided with a connecting thread, the lower end of the air pipeline is connected to the air bag, and the middle side wall of the air pipeline is circumferentially provided with an air hole connected to the lower chamber.

[0008] Furthermore, the connecting thread is a G thread.

[0009] Furthermore, the piston includes a piston portion and a sleeve portion, the lower end of the sleeve portion is connected to the center of the piston portion, the return spring is arranged between the piston portion and the test base, and the upper end of the sleeve portion extends out of the test base.

[0010] Furthermore, the upper end surface of the sleeve portion is circumferentially provided with a first annular groove for embedding a first sealing ring.

[0011] Furthermore, a second annular groove is circumferentially provided on the outer peripheral wall of the piston portion, and a second sealing ring for sealingly cooperating with the inner wall of the test base is embedded in the second annular groove.

[0012] Furthermore, the inner circumferential wall of the piston part is provided with a third annular groove along the circumferential direction, and a third sealing ring for sealingly cooperating with the outer wall of the gas pipeline is embedded in the third annular groove.

[0013] Furthermore, the piston portion and the sleeve portion are integrally connected.

[0014] Furthermore, a limiting block cooperating with the piston part is arranged in the lower chamber, and the upper end surface of the limiting block is higher than the air hole.

[0015] Furthermore, the first sealing ring, the second sealing ring and the third sealing ring are all made of rubber material.

[0016] After adopting the above structure, the beneficial effects of the utility model are as follows: the utility model is a pulse valve rapid testing tool, the testing tool includes a test base, a piston and a gas pipeline, the test base is provided with a chamber, the piston is movably arranged in the chamber, the piston divides the chamber into an upper chamber and a lower chamber that are independent of each other, the upper end of the piston extends out of the test base, the upper end face of the piston is provided with a first sealing ring, the upper end of the gas pipeline protrudes from the upper end face of the piston, and the outer wall of the upper end of the gas pipeline is provided with a connecting thread, and the connecting thread is a G thread. The utility model realizes the sealing of the connection between the pulse valve and the test tool through the movably arranged piston, which makes up for the shortcoming that the G thread connection has no self-sealing property, and at the same time, it does not need to wrap raw tape or other fillers on the G thread to achieve sealing. It realizes the rapid installation of the pulse valve, reduces the operating procedures, improves the testing efficiency, and saves the testing cost. Specifically, during the blowing test, the exhaust valve of the air bag is closed, and the intake valve of the air bag is opened. The gas enters the lower chamber through the air hole, so that the piston overcomes the elastic force of the return spring and moves toward the upper chamber, thereby forming a sealing fit between the upper end face of the piston and the lower end face of the connecting port to achieve a sealing effect and prevent air leakage. At this time, the intake valve is closed and the pulse valve blowing test is performed. At the end of the blowing test, the exhaust valve is opened, the air bag pressure is emptied, and the piston moves toward the lower chamber under the elastic force of the return spring until the piston is limitedly matched with the limit block located in the lower chamber, thereby disengaging the sealing fit between the upper end face of the piston and the lower end face of the connecting port, and the piston part does not block the air hole, preparing for the next test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present utility model, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a cross-sectional view of the pulse valve of the utility model;

[0019] Figure 2 It is a cross-sectional view of the test tool of the utility model;

[0020] Figure 3 This is a cross-sectional view of the pulse valve and the test fixture of the utility model;

[0021] Figure 4 The utility model Figure 3 A magnified view of the structure at A.

[0022] Figures 1 to 4 The bid number is:

[0023] 1. Air bag; 11. Inlet valve; 12. Exhaust valve; 2. Test base; 21. Chamber; 211. Upper chamber; 2111. Return spring; 212. Lower chamber; 2121. Limit block; 3. Piston; 31. Piston part; 311. Second annular groove; 312. Third annular groove; 32. Sleeve part; 321. First annular groove; 4. Gas pipeline; 41. Connecting thread; 42. Air hole; 5. First sealing ring; 6. Second sealing ring; 7. Third sealing ring; 100. Pulse valve; 101. Connection port. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly defined and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this utility model are only for illustrative purposes and do not represent the only implementation method.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] like Figures 1 to 4As shown, a pulse valve rapid test fixture is provided, the test fixture is equipped with an air bag 1, the air bag 1 is respectively provided with an intake valve 11 and an exhaust valve 12, the test fixture comprises a test base 2, a piston 3 and a gas pipeline 4, the test base 2 is provided with a chamber 21, the piston 3 is movably arranged in the chamber 21, the piston 3 divides the chamber 21 into an upper chamber 211 and a lower chamber 212 which are independent of each other, the upper chamber 211 is provided with a return spring 2111, the return spring 2111 is arranged between the piston 3 and the lower chamber 212, The upper end of the piston 3 extends out of the test base 2, and the upper end surface of the piston 3 is provided with a first sealing ring 5. The gas pipeline 4 is movably sleeved inside the piston 3, and the gas pipeline 4 is fixedly connected to the test base 2. The upper end of the gas pipeline 4 protrudes from the upper end surface of the piston 3, and the outer wall of the upper end of the gas pipeline 4 is provided with a connecting thread 41. The lower end of the gas pipeline 4 is connected to the air bag 1, and the middle side wall of the gas pipeline 4 is circumferentially provided with an air hole 42 connected to the lower chamber 212. The connecting thread 41 is a G thread. The piston 3 includes a piston part 31 and a sleeve part 32, and the lower end of the sleeve part 32 is connected to the center of the piston part 31. The reset spring 2111 is provided between the piston part 31 and the test base 2, and the upper end of the sleeve part 32 extends out of the test base 2. The piston part 31 and the sleeve part 32 are connected in an integrated manner. A limiting block 2121 is disposed in the lower chamber 212 and cooperates with the piston portion 31 to limit the position. The upper end surface of the limiting block 2121 is higher than the air hole 42 .

[0032] Based on the above embodiments, the present invention aims to provide a rapid testing tool for a pulse valve, the testing tool comprising a testing base 2, a piston 3 and a gas pipeline 4, the testing base 2 is provided with a chamber 21, the piston 3 is movably arranged in the chamber 21, the piston 3 divides the chamber 21 into an upper chamber 211 and a lower chamber 212 which are independent of each other, the upper end of the piston 3 extends out of the testing base 2, the upper end face of the piston 3 is provided with a first sealing ring 5, the upper end of the gas pipeline 4 protrudes from the upper end face of the piston 3, and the outer wall of the upper end of the gas pipeline 4 is provided with a connecting thread 41, the connecting thread 41 is a G thread. The present invention realizes the sealing of the connection between the pulse valve 100 and the testing tool through the movably arranged piston 3, makes up for the shortcoming that the G thread connection has no self-sealing property, and also does not need to wrap raw tape or other fillers on the G thread to achieve sealing. The pulse valve 100 is quickly installed, the operation process is reduced, the testing efficiency is improved, and the testing cost is saved. Specifically, during the blowing test, the exhaust valve 12 of the air bag 1 is closed, and the intake valve 11 of the air bag 1 is opened. The gas enters the lower chamber 212 through the air hole 42, so that the piston 3 overcomes the elastic force of the return spring 2111 and moves toward the upper chamber 211, so that the upper end face of the piston 3 and the lower end face of the connection port 101 form a sealing match to achieve a sealing effect and prevent air leakage. At this time, the intake valve 11 is closed and the pulse valve 100 is blown. At the end of the blowing test, the exhaust valve 12 is opened, the pressure of the air bag 1 is emptied, and the piston 3 moves to the lower chamber 212 under the elastic force of the return spring 2111 until the piston 3 and the limit block 2121 located in the lower chamber 212 are limited, so that the upper end face of the piston 3 and the lower end face of the connection port 101 are disengaged from the sealing match, and the piston part 31 does not block the air hole 42, so as to prepare for the next test. In this embodiment, the test base 2 is set in a split type to facilitate the installation of the piston 3.

[0033] As another preferred embodiment of the present invention, the upper end surface of the sleeve portion 32 is circumferentially provided with a first annular groove 321 for embedding the first sealing ring 5. The outer peripheral wall of the piston portion 31 is circumferentially provided with a second annular groove 311, and the second annular groove 311 is embedded with a second sealing ring 6 for sealingly cooperating with the inner wall of the test base 2. The inner peripheral wall of the piston portion 31 is circumferentially provided with a third annular groove 312, and the third annular groove 312 is embedded with a third sealing ring 7 for sealingly cooperating with the outer wall of the gas pipeline 4. The first sealing ring 5, the second sealing ring 6 and the third sealing ring 7 are all made of rubber. In this embodiment, Figure 2As shown, the arrangement of the first annular groove 321, the second annular groove 311 and the third annular groove 312 makes the installation of the first sealing ring 5, the second sealing ring 6 and the third sealing ring 7 more reliable, and prevents the first sealing ring 5, the second sealing ring 6 and the third sealing ring 7 from moving. The first sealing ring 5, the second sealing ring 6 and the third sealing ring 7 are all made of rubber material. The characteristics of the flexible material make the first sealing ring 5 deform when it is squeezed, and then it can better fit with the upper end surface of the piston 3 and the lower end surface of the connecting port 101, effectively play a sealing role and prevent air leakage; the characteristics of the flexible material make the second sealing ring 6 deform when it is squeezed, and then effectively play a sealing role between the piston 3 and the test base 2, so that the chamber 21 is divided into an upper chamber 211 and a lower chamber 212 that are independent of each other by the piston 3. The characteristics of the flexible material make the third sealing ring 7 deform when it is squeezed, and then effectively play a sealing role between the piston 3 and the gas pipeline 4.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.

Claims

1. A pulse valve rapid testing tool, the testing tool being provided with an air bag (1), the air bag (1) being provided with an air intake valve (11) and an air exhaust valve (12), characterized in that: The test fixture comprises a test base (2), a piston (3) and a gas pipeline (4); a chamber (21) is provided in the test base (2); the piston (3) is movably arranged in the chamber (21); the piston (3) divides the chamber (21) into an upper chamber (211) and a lower chamber (212) which are independent of each other; a return spring (2111) is provided in the upper chamber (211); the return spring (2111) is arranged between the piston (3) and the test base (2); the upper end of the piston (3) protrudes from the test base (2 ), the upper end surface of the piston (3) is provided with a first sealing ring (5), the gas pipeline (4) is movably sleeved inside the piston (3), the gas pipeline (4) is fixedly connected to the test base (2), the upper end of the gas pipeline (4) protrudes from the upper end surface of the piston (3), and the outer wall of the upper end of the gas pipeline (4) is provided with a connecting thread (41), the lower end of the gas pipeline (4) is connected to the air bag (1), and the middle side wall of the gas pipeline (4) is circumferentially provided with an air hole (42) that is connected to the lower chamber (212).

2. A pulse valve rapid testing tool according to claim 1, characterized in that: The connecting thread (41) is a G thread.

3. The pulse valve rapid testing tool according to claim 1 is characterized by: The piston (3) comprises a piston portion (31) and a sleeve portion (32), the lower end of the sleeve portion (32) is connected to the center of the piston portion (31), the return spring (2111) is arranged between the piston portion (31) and the test base (2), and the upper end of the sleeve portion (32) protrudes from the test base (2).

4. The pulse valve rapid testing tool according to claim 3 is characterized by: The upper end surface of the sleeve portion (32) is provided with a first annular groove (321) for embedding the first sealing ring (5) along the circumferential direction.

5. The pulse valve rapid testing tool according to claim 3 is characterized by: The outer peripheral wall of the piston portion (31) is provided with a second annular groove (311) along the circumferential direction, and a second sealing ring (6) for sealingly cooperating with the inner wall of the test base (2) is embedded in the second annular groove (311).

6. The pulse valve rapid testing tool according to claim 5, characterized in that: The inner peripheral wall of the piston portion (31) is provided with a third annular groove (312) along the circumferential direction, and a third sealing ring (7) for sealingly cooperating with the outer wall of the gas transmission pipeline (4) is embedded in the third annular groove (312).

7. The pulse valve rapid testing tool according to claim 3 is characterized by: The piston portion (31) and the sleeve portion (32) are integrally connected.

8. The pulse valve rapid testing tool according to claim 3 is characterized by: A limiting block (2121) is provided in the lower chamber (212) and cooperates with the piston portion (31) to limit the position. The upper end surface of the limiting block (2121) is higher than the air hole (42).

9. The pulse valve rapid testing tool according to claim 6, characterized in that: The first sealing ring (5), the second sealing ring (6) and the third sealing ring (7) are all made of rubber material.

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