Life test tool for manual gate valve

Abstract

The utility model discloses a life test tool for a manual gate valve. The life test tool comprises a base body; the first support is connected to the base body; the second support is connected to the base body and is used for supporting and limiting the tested valve together with the first support; the adjustable supporting frame is connected to the base body; the driving part is connected to the adjustable supporting frame; the coupler is connected to the driving part and is arranged between the second support and the adjustable support frame; the clamping part is used for clamping a knob on the tested valve, the clamping part is connected with the coupler, the driven part rotates in a linkage manner, and the clamping part rotates in a linkage manner with the knob to open and close the tested valve; the side sealing piece is connected to the flange on the tested valve, is used for sealing the tested valve, is connected with vacuumizing equipment through the side sealing piece, and is used for vacuumizing the tested valve, spraying helium to the outer wall of the tested valve and testing the sealing performance of the tested valve; therefore, the technical problems that the service life of the manual gate valve needs to be tested, and the operation reliability and the sealing performance need to be guaranteed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor vacuum valve testing, in particular to a life testing tool for a manual plug-in valve. Background Art

[0002] With the rapid development of my country's semiconductor industry, the types and diversity of products are becoming more and more apparent, and the competition in the semiconductor industry is becoming increasingly fierce. The selection of semiconductor equipment is particularly important, especially the valves that control the vacuum state in semiconductor equipment. The reliability and sealing performance of their operation directly affect the quality of semiconductor product production.

[0003] Among them, the manual gate valve is a commonly used vacuum valve. In order to ensure the operational reliability and sealing performance of the manual gate valve, the method adopted is to conduct life testing (life testing includes: operational reliability test and sealing performance test) to promptly discover possible design and manufacturing defects and provide an important basis for the improvement and optimization of the manual gate valve;

[0004] Therefore, a life test fixture for the manual gate valve is required. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the related art, the purpose is to provide a life test tool for a manual gate valve to solve the technical problem that the manual gate valve in the related art needs to be tested for life to ensure operational reliability and sealing performance.

[0006] The technical solution to achieve the purpose is: a life test fixture for a manual gate valve, including:

[0007] a base body;

[0008] a first support connected to the base body, for supporting and limiting the valve to be tested;

[0009] a second support connected to the base body, spaced apart from the first support, and configured to support and position the valve under test together with the first support;

[0010] an adjustable support frame connected to the base body and spaced apart from the second support;

[0011] a driving portion connected to the adjustable support frame;

[0012] a coupling connected to the driving portion and disposed between the second support and the adjustable support frame;

[0013] a clamping portion for clamping a knob on the valve under test, the clamping portion being connected to the coupling and being rotated in conjunction with the driving portion, the clamping portion being rotated in conjunction with the knob to open and close the valve under test;

[0014] And a side sealing member is connected to the flange on the valve under test and is used to seal the valve under test. A vacuuming device is connected to the side sealing member to vacuum the valve under test and spray helium toward the outer wall of the valve under test to test the sealing performance of the valve under test.

[0015] Furthermore: the base body includes: a substrate, the upper surface of which is connected to the first support, the second support and the adjustable support frame; and at least four feet connected to the lower surface of the substrate.

[0016] Furthermore: the first support and the second support have the same structure, both comprising:

[0017] a pad, disposed on the substrate, and supporting the bottom of the valve to be tested;

[0018] Two side baffles are provided on the base plate and are symmetrically arranged on both sides of the valve to be tested;

[0019] At least two first locking members are connected to the base plate, and one of the first locking members is connected to one of the side blocks;

[0020] and two first nylon blocks, which are connected to the side baffle frame in a one-to-one manner and abut against the side wall of the valve to be tested.

[0021] Further: the adjustable support frame includes: a main support frame connected to the base plate; and a sliding support connected to the main support frame, sliding up and down along the main support frame, and used to connect to the driving part.

[0022] Further: the main support frame includes: a main support plate connected to the base plate, the main support plate having a first long groove and two second long grooves, the first long groove is arranged in the middle position of the main support plate, and the second long grooves are symmetrically arranged on both sides of the first long groove;

[0023] and two secondary support plates symmetrically connected to the main support plate and connected to the base plate, wherein the secondary support plates are spaced apart from the second long groove.

[0024] Further: the sliding support includes: a motor connecting plate connected to the driving part, and the driving shaft on the driving part passes through the motor connecting plate and is connected to the coupling at the first long slot;

[0025] Two sliding blocks are slidably connected to the second long groove in a one-to-one manner;

[0026] And at least four second locking members, two in a group, and a group of second locking members connects and locks the motor connecting plate and one of the sliders.

[0027] Further: the clamping portion includes: a joint connected to the coupling;

[0028] a chuck connected to the joint, surrounding the knob and spaced apart from the knob;

[0029] and three second nylon blocks are evenly distributed on the clamp, and when the clamp is tightened, the second nylon blocks clamp the knob.

[0030] Further: the chuck includes: a side plate connected to the joint and spaced apart from the knob;

[0031] an annular jacket connected to the side plate and spaced apart from the knob, the annular jacket having a first opening and a second opening, the first opening being disposed between the annular jacket and the side plate, the second opening being used to disconnect the annular jacket, the first opening being in communication with the second opening;

[0032] Two convex edges are connected to the annular jacket, symmetrically arranged on both sides of the second opening, and spaced apart from the side plates;

[0033] And at least one third locking piece is connected to the convex edge. When the third locking piece is rotated, the two convex edges gradually approach each other, the annular sleeve is pulled and tightened toward the knob, and the second nylon block moves toward the knob to clamp the knob.

[0034] Further: the side sealing member includes: a first sealing plate, connected to one of the flanges; a first seal, connected between the first sealing plate and the flange; a second sealing plate, connected to the other flange; a second seal, connected between the second sealing plate and the flange; a connecting pipe, connected to the second sealing plate, used to connect the vacuum pumping equipment to vacuum the valve under test; and a third seal, connected between the second sealing plate and the connecting pipe.

[0035] Furthermore: the first seal, the second seal or the third seal is an O-ring.

[0036] The above technical scheme has the following beneficial effects: compared with the related art, the life test tooling of the manual plug-in valve is provided with a base body, a first support, a second support, an adjustable support frame, a driving part, a coupling, a clamping part and a side sealing part; the base body forms a reliable support structure, which is conducive to the connection and arrangement of other components; the valve to be tested is limited between the first support, the second support and the clamping part, and the position of the driving part is adjusted by the adjustable support frame. The coupling connects the driving part and the clamping part, and the driving part moves. The clamping part is rotated through the coupling linkage, and the clamping part is linked to the knob on the valve to be tested to rotate, thereby realizing the opening and closing of the valve to be tested and performing an operation reliability test, and a side sealing part is provided. The vacuum equipment is connected to the side sealing part to vacuum the valve to be tested, and helium is sprayed onto the outer wall of the valve to be tested to perform a sealing performance test on the valve to be tested; thereby overcoming the technical problem that the manual plug-in valve needs to be tested for life and ensure operational reliability and sealing performance, and achieving the technical effect of being able to test the life of the manual plug-in valve and ensure operational reliability and sealing performance, and having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the assembly structure;

[0038] Figure 2 for Figure 1 One of the structural diagrams without the touch control box;

[0039] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A in FIG;

[0040] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B in FIG;

[0041] Figure 5 for Figure 1 The second structural diagram without the touch control box;

[0042] Figure 6 for Figure 1 A partial schematic diagram of

[0043] Figure 7 for Figure 1 or Figure 2 A partial cross-sectional view of the middle side seal;

[0044] In the figure: 10. Base body, 11. Base plate, 12. Foot, 20. First support, 21. Cushion block, 22. Side block, 23. First locking member, 24. First nylon block, 30. Second support, 40. Adjustable support frame, 41. Main support frame, 41-1. Main support plate, 41-11. First long slot, 41-12. Second long slot, 41-2. Secondary support plate, 42. Sliding support, 42-1. Motor connecting plate, 42-2. Slider, 42-3. Second locking member, 50. Drive unit, 60. Coupling, 70. Clamping part, 71. Chuck, 71-1. Side plate, 71-2. Annular jacket, 71-21. First opening, 71-22. Second opening, 71-3. Flange, 71-4. Third locking member, 72. Second nylon block, 80. Side sealing member, 81. First sealing plate, 82. First seal, 83. Second sealing plate, 84. Second seal, 85. Connecting pipe, 86. Third seal, 100. Measured valve, 101. Knob, 102. Flange, 103. Valve plate, 104. Inner space, 200. Touch-control electrical box. DETAILED DESCRIPTION

[0045] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0046] The life test fixture of the manual gate valve solves the technical problem of the manual gate valve in the related technology that needs to be tested for life to ensure operational reliability and sealing performance. It can be manufactured and used, and has achieved the positive effect of being able to perform life tests on manual gate valves and ensure operational reliability and sealing performance. The overall idea is as follows:

[0047] Implementation Method

[0048] like Figure 1 、 Figure 2 、 Figure 5 As shown in the figure; the life test tool for manual gate valve includes:

[0049] a base body 10;

[0050] a first support 20 connected to the base body 10 and used to support and limit the valve 100 to be tested;

[0051] a second support 30 connected to the base body 10 and spaced apart from the first support 20 , for supporting and limiting the valve 100 together with the first support 20 ;

[0052] an adjustable support frame 40 connected to the base body 10 and spaced apart from the second support 30;

[0053] a driving unit 50 connected to the adjustable support frame 40;

[0054] a coupling 60 connected to the driving portion 50 and disposed between the second support 30 and the adjustable support frame 40;

[0055] a clamping portion 70 for clamping the knob 101 on the valve 100 under test, the clamping portion 70 being connected to the coupling 60 and being rotated in conjunction with the driving portion 50 , the clamping portion 70 being rotated in conjunction with the knob 101 to open and close the valve 100 under test;

[0056] and a side sealing member 80 connected to a flange 102 on the valve under test 100 for sealing the valve under test 100. A vacuuming device is connected to the side sealing member 80 to evacuate the valve under test 100 and inject helium toward the outer wall of the valve under test 100 to perform a sealing performance test on the valve under test 100.

[0057] Specifically, during implementation, a base body 10, a first support 20, a second support 30, an adjustable support frame 40, a driving part 50, a coupling 60, a clamping part 70 and a side sealing member 80 are provided; the base body 10 forms a reliable supporting structure, which is conducive to the connection and arrangement of other components; the valve under test 100 is limited between the first support 20, the second support 30 and the clamping part 70, and the position of the driving part 50 is adjusted by the adjustable support frame 40. The coupling 60 connects the driving part 50 and the clamping part 70. The driving part 50 is actuated, and the clamping part 70 is rotated by the coupling 60. The clamping part 70 is linked to the knob 101 on the valve under test 100 to rotate, thereby realizing the opening and closing of the valve under test 100 and performing an operation reliability test. In addition, a side sealing member 80 is provided, and a vacuuming device is connected to the side sealing member 80 to vacuum the valve under test 100, and helium is injected into the outer wall of the valve under test 100 to perform a sealing performance test on the valve under test 100.

[0058] Another embodiment:

[0059] like Figure 1 、 Figure 2 、 Figure 5 As shown; when implemented, the base body 10 includes: a substrate 11, the upper surface of which is connected to the first support 20, the second support 30 and the adjustable support frame 40; and at least four feet 12, connected to the lower surface of the substrate 11;

[0060] The base plate 11 is a rectangular plate-shaped structure; the foot 12 is a common structure in the prior art, such as a rubber foot, connected to the base plate 11;

[0061] A base body 10 is provided to form a reliable support structure, which is conducive to connecting and arranging the first support 20, the second support 30 and the adjustable support frame 40;

[0062] Another embodiment:

[0063] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 As shown; in implementation, the first support 20 and the second support 30 have the same structure, both comprising: a cushion block 21, disposed on the base plate 11, supporting the bottom of the valve under test 100; two side blocks 22, disposed on the base plate 11, symmetrically disposed on both sides of the valve under test 100; at least two first locking members 23, connected to the base plate 11, with one first locking member 23 connected to one side block 22; and two first nylon blocks 24, one-to-one connected to the side blocks 22, abutting against the side walls of the valve under test 100;

[0064] The spacer 21 is a square block used to raise and support the valve 100 under test; the side frame 22 is roughly L-shaped in shape and has a waist-shaped through groove. A first locking member 23 is provided at the waist-shaped through groove so that the side frame 22 can be tightened by the first locking member 23 after it moves, which provides better flexibility in use; the first locking member 23 is a hexagon socket bolt threadedly connected to the base plate 11 for tightening and positioning the side frame 22; the first nylon block 24 is connected to the side frame 22 by a hexagon socket bolt and is used to directly contact the valve 100 under test, which not only forms a barrier but also does not damage the valve 100 under test;

[0065] A first support 20 and a second support 30 are provided to elevate and support the valve 100 under test, and to position the valve 100 under test so that the valve 100 under test can be reliably positioned;

[0066] Another embodiment:

[0067] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown; when implemented, the adjustable support frame 40 includes: a main support frame 41, connected to the substrate 11; and a sliding support 42, connected to the main support frame 41, sliding up and down along the main support frame 41, for connecting the driving portion 50;

[0068] The main support frame 41 includes: a main support plate 41-1, connected to the base plate 11, the main support plate 41-1 having a first long groove 41-11 and two second long grooves 41-12, the first long groove 41-11 is arranged in the middle of the main support plate 41-1, and the second long grooves 41-12 are symmetrically arranged on both sides of the first long groove 41-11; and two secondary support plates 41-2, symmetrically connected to the main support plate 41-1 and connected to the base plate 11, the secondary support plates 41-2 are spaced apart from the second long grooves 41-12;

[0069] The main support plate 41-1 is a square plate structure, connected to the base plate 11 by hexagon socket bolts; the secondary support plate 41-2 is a right-angled triangular plate structure, connected to the base plate 11 and the main support plate 41-1 by hexagon socket bolts;

[0070] A first long groove 41-11 is provided to facilitate the passage of the drive shaft on the drive portion 50 and the connection of the drive shaft to the coupling 60; a second long groove 41-12 is provided to serve as a sliding guide, facilitating the sliding support 42 to slide along the position;

[0071] The main support frame 41 forms a reliable support structure, which is conducive to connecting the sliding support 42;

[0072] The sliding support 42 includes: a motor connecting plate 42-1 connected to the driving unit 50, and the driving shaft on the driving unit 50 passes through the motor connecting plate 42-1 and is connected to the coupling 60 at the first long slot 41-11; two sliders 42-2, one-to-one slidingly connected to the second long slot 41-12; and at least four second locking members 42-3, two in a group, and a group of second locking members 42-3 connects and locks the motor connecting plate 42-1 and one of the sliders 42-2;

[0073] The motor connecting plate 42-1 is a rectangular plate-like structure, which is used to insert the hexagon socket bolt to connect to the drive unit 50. The drive shaft on the drive unit 50 extends through the motor connecting plate 42-1. The slider 42-2 has a roughly "T"-shaped structure and slides along the second long slot 41-12. It is connected to the motor connecting plate 42-1 by a second locking member 42-3. The second locking member 42-3 is a hexagon socket bolt that locks the motor connecting plate 42-1 and the slider 42-2.

[0074] An adjustable support frame 40 is provided, and the position of the driving portion 50 is adjusted by moving the sliding support 42 along the main support frame 41 so that the clamping portion 70 can be aligned with the knob 101, and the clamping portion 70 clamps the knob 101;

[0075] Another embodiment:

[0076] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 As shown; during implementation, the driving unit 50 is a common structure in the prior art, such as a stepper motor, driven by the touch-sensitive electrical box 200. The stepper motor generates a rotational driving force (for example, when rotating forward, the valve 100 under test is opened, and when rotating reverse, the valve 100 under test is closed. The touch-sensitive electrical box 200 records the number of operations. When the valve 100 under test has operated a certain number of times, the stepper motor is paused). The linkage knob 101 operates to open and close the valve plate 103 on the valve 100 under test, simulating the opening and closing process of the valve 100 under test and performing an operational reliability test (for example, after the opening and closing process is repeated 100,000 times, the touch-sensitive electrical box 200 records the number of operations. If the valve plate 103 can still open and close normally, it is qualified);

[0077] The touch-sensitive electrical box 200 is a common structure in the prior art, used to drive the stepper motor to rotate, so that the stepper motor can be linked to the valve under test 100 to open and close. It can adjust the operating speed of the stepper motor, thereby adjusting the operating speed of the valve under test 100, and statistically record the number of operations;

[0078] After reading the disclosed content, a person skilled in the art can directly and undoubtedly know how to configure the driving unit 50 and the touch control box 200 without any creative effort or excessive experimentation.

[0079] The coupling 60 is a common structure in the prior art, such as a three-section universal joint coupling, which is used to connect the drive shaft on the drive part 50 and the clamping part 70;

[0080] Another embodiment:

[0081] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 As shown; in implementation, the clamping portion 70 includes: a joint connected to the coupling 60; a chuck 71 connected to the joint, surrounding the knob 101 and spaced apart from the knob 101; and three second nylon blocks 72, evenly distributed on the chuck 71, when the chuck 71 is tightened, the second nylon blocks 72 clamp the knob 101;

[0082] The joint is a section of circular shaft connected to the coupling 60;

[0083] The chuck 71 includes: a side plate 71-1 connected to the joint and spaced apart from the knob 101; an annular sleeve 71-2 connected to the side plate 71-1 and spaced apart from the knob 101; the annular sleeve 71-2 has a first opening 71-21 and a second opening 71-22, the first opening 71-21 is provided between the annular sleeve 71-2 and the side plate 71-1, the second opening 71-22 is used to disconnect the annular sleeve 71-2, the first opening 71-21 and the second opening 71-22 are provided. The opening 71-22 is connected; two flanges 71-3 are connected to the annular jacket 71-2, symmetrically arranged on both sides of the second opening 71-22, and spaced apart from the side plate 71-1; and at least one third locking member 71-4 is connected to the flange 71-3. When the third locking member 71-4 is rotated, the two flanges 71-3 gradually move closer together, the annular jacket 71-2 is pulled and tightened toward the knob 101, and the second nylon block 72 moves toward the knob 101 to clamp the knob 101.

[0084] The side plate 71-1 is a circular plate structure and is welded to the joint;

[0085] The annular jacket 71-2 is welded to the side plate 71-1; a first opening 71-21 and a second opening 71-22 are provided, which facilitates the annular jacket 71-2 to be pulled and deformed when the third locking member 71-4 is tightened, and tightened toward the knob 101;

[0086] The convex edge 71-3 and the annular jacket 71-2 are welded;

[0087] The third locking member 71-4 is a hexagon socket bolt that passes through one of the flanges 71-3 and is threadedly connected to the other flange 71-3. Rotating the third locking member 71-4 causes the two flanges 71-3 to gradually approach each other, thereby pulling the annular sleeve 71-2 and deforming it, tightening it toward the knob 101. The second nylon block 72 clamps the knob 101.

[0088] The second nylon block 72 is connected to the annular jacket 71 - 2 via a hexagon socket bolt and is used to contact the knob 101 , which not only can press the knob 101 but also will not damage the knob 101 ;

[0089] Another embodiment:

[0090] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 7As shown; in implementation, the side sealing member 80 includes: a first sealing plate 81 connected to one of the flanges 102; a first seal 82 connected between the first sealing plate 81 and the flange 102; a second sealing plate 83 connected to the other flange 102; a second seal 84 connected between the second sealing plate 83 and the flange 102; a connecting pipe 85 connected to the second sealing plate 83 for connecting to the vacuum pumping equipment to vacuum the valve under test 100; and a third seal 86 connected between the second sealing plate 83 and the connecting pipe 85;

[0091] The first sealing plate 81 is a circular plate structure, connected to the flange 102 by hexagon socket bolts, which is convenient for installation and removal; the second sealing plate 83 is a circular ring plate structure, connected to the flange 102 by hexagon socket bolts, which is convenient for installation and removal; the connecting pipe 85 is connected to the second sealing plate 83 by hexagon socket bolts, which is convenient for installation and removal; the first seal 82, the second seal 84 or the third seal 86 is an O-ring to ensure sealing;

[0092] A side seal 80 is provided, and a vacuum pump is connected to the side seal 80 to pump vacuum on the valve 100 under test, and helium is injected toward the outer wall of the valve 100 under test to test the sealing performance of the valve 100 under test;

[0093] The sealing performance test includes a first test and a second test;

[0094] During the first test, the valve plate 103 is in the open state. A vacuum pump (a commonly used structure in the prior art, such as a vacuum pump with a digital display) is connected to the connecting pipe 85 to evacuate the valve 100 under test. Helium gas is sprayed toward the outer wall of the valve 100 under test to test the sealing performance of the entire valve 100 under test (e.g., welds, connection interfaces, etc.). If the value of the vacuum pump does not change, the valve passes the test.

[0095] During the second test, the valve plate 103 is in the closed state. A vacuum pump is connected to the connecting pipe 85 to evacuate the inner space 104 between the valve plate 103 and the flange 102. Helium is then injected into the flange 102 to test the sealing performance of the valve plate 103. If the value of the vacuum pump does not change, the test is qualified.

[0096] Regarding the structure of the valve 100 under test:

[0097] See Figure 1 、 Figure 2 、 Figure 5 、 Figure 7The valve under test 100 is a structure known in the prior art, comprising a knob 101, a flange 102, and a valve plate 103. After reading the disclosed information, a person skilled in the art can directly and unambiguously know how to position the valve under test 100 on a life test fixture for a manual gate valve without requiring any creative effort or excessive testing.

[0098] The working principle is as follows: the base body 10 forms a reliable support structure, which is conducive to the connection and arrangement of other components; the valve under test 100 is limited between the first support 20, the second support 30 and the clamping part 70, and the position of the driving part 50 is adjusted by the adjustable support frame 40. The coupling 60 connects the driving part 50 and the clamping part 70. The driving part 50 is activated, and the clamping part 70 is rotated through the coupling 60. The clamping part 70 is linked to the knob 101 on the valve under test 100 to rotate, thereby realizing the opening and closing of the valve under test 100 {when the valve is completed In the fully open state, the driving unit 50 rotates forward a certain number of times (for example, 9.7 times), and the valve under test 100 moves from the open state to the sealed closed state. The driving unit 50 rotates reversely a certain number of times (for example, 9.7 times), and the valve under test 100 returns from the sealed closed state to the fully open state. Operation reliability testing is performed. A side seal 80 is provided, and a vacuum pumping device is connected to the side seal 80 to evacuate the valve under test 100 and spray helium toward the outer wall of the valve under test 100 to test the sealing performance of the valve under test 100.

[0099] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the positional relationships shown in the drawings and are only used to facilitate or simplify the description, and do not necessarily indicate specific directions. The operating procedures described in the embodiments are not absolute steps for use and may be adjusted accordingly in actual use.

[0100] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the relevant art. The terms "first," "second," and similar words used in the specification and claims do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not necessarily indicate a limit on quantity, but rather indicate the presence of at least one, which shall be determined based on the content of the embodiments.

[0101] The above is only a preferred specific implementation method, but the scope of protection is not limited to this. Any technician familiar with this technical field can make equivalent replacements or changes based on the technical solutions and inventive concepts within the disclosed technical scope, which should be covered by the scope of protection.

Claims

1. The life test tool of the manual gate valve is characterized by: include: a base body; a first support connected to the base body, for supporting and limiting the valve to be tested; a second support connected to the base body, spaced apart from the first support, and configured to support and position the valve under test together with the first support; an adjustable support frame connected to the base body and spaced apart from the second support; a driving portion connected to the adjustable support frame; a coupling connected to the driving portion and disposed between the second support and the adjustable support frame; a clamping portion for clamping a knob on the valve under test, the clamping portion being connected to the coupling and being rotated in conjunction with the driving portion, the clamping portion being rotated in conjunction with the knob to open and close the valve under test; And a side sealing member is connected to the flange on the valve under test and is used to seal the valve under test. A vacuuming device is connected to the side sealing member to vacuum the valve under test and spray helium toward the outer wall of the valve under test to test the sealing performance of the valve under test.

2. The life test tool for the manual gate valve according to claim 1 is characterized in that: The base body includes: a base plate, the upper surface of which is connected to the first support, the second support and the adjustable support frame; and at least four feet connected to the lower surface of the base plate.

3. The life test tool for the manual gate valve according to claim 2 is characterized in that: The first support and the second support have the same structure, and both include: a pad, disposed on the substrate, and supporting the bottom of the valve to be tested; Two side baffles are provided on the base plate and are symmetrically arranged on both sides of the valve to be tested; At least two first locking members are connected to the base plate, and one of the first locking members is connected to one of the side blocks; and two first nylon blocks, which are connected to the side baffle frame in a one-to-one manner and abut against the side wall of the valve to be tested.

4. The life test tool for the manual gate valve according to claim 2 is characterized in that: The adjustable support frame includes: a main support frame connected to the base plate; and a sliding support connected to the main support frame, sliding up and down along the main support frame, and used to connect to the driving part.

5. The life test tool for the manual gate valve according to claim 4 is characterized in that: The main support frame includes: a main support plate connected to the base plate, the main support plate having a first long groove and two second long grooves, the first long groove is arranged in the middle of the main support plate, and the second long grooves are symmetrically arranged on both sides of the first long groove; and two secondary support plates symmetrically connected to the main support plate and connected to the base plate, wherein the secondary support plates are spaced apart from the second long groove.

6. The life test tool for the manual gate valve according to claim 5 is characterized in that: The sliding support includes: a motor connecting plate connected to the driving part, and a driving shaft on the driving part passes through the motor connecting plate and is connected to the coupling at the first long slot; Two sliding blocks are slidably connected to the second long groove in a one-to-one manner; And at least four second locking members, two in a group, and a group of second locking members connects and locks the motor connecting plate and one of the sliders.

7. The life test tool for the manual gate valve according to claim 1, 3 or 6, characterized in that: The clamping portion includes: a joint connected to the coupling; a chuck connected to the joint, surrounding the knob and spaced apart from the knob; and three second nylon blocks are evenly distributed on the clamp, and when the clamp is tightened, the second nylon blocks clamp the knob.

8. The life test tool for the manual gate valve according to claim 7 is characterized in that: The chuck includes: a side plate connected to the joint and spaced apart from the knob; an annular jacket connected to the side plate and spaced apart from the knob, the annular jacket having a first opening and a second opening, the first opening being disposed between the annular jacket and the side plate, the second opening being used to disconnect the annular jacket, the first opening being in communication with the second opening; Two convex edges are connected to the annular jacket, symmetrically arranged on both sides of the second opening, and spaced apart from the side plates; And at least one third locking piece is connected to the convex edge. When the third locking piece is rotated, the two convex edges gradually approach each other, the annular sleeve is pulled and tightened toward the knob, and the second nylon block moves toward the knob to clamp the knob.

9. The life test tool for the manual gate valve according to claim 1 is characterized in that: The side sealing member includes: a first sealing plate connected to one of the flanges; a first seal connected between the first sealing plate and the flange; a second sealing plate connected to the other flange; a second seal connected between the second sealing plate and the flange; a connecting pipe connected to the second sealing plate for connecting the vacuum pumping equipment to vacuum the valve under test; and a third seal connected between the second sealing plate and the connecting pipe.

10. The life test tool for the manual gate valve according to claim 9, characterized in that: The first seal, the second seal or the third seal is an O-ring.

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