CN217560922U - Valve case spring life test frock - Google Patents
Valve case spring life test frock Download PDFInfo
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- CN217560922U CN217560922U CN202021359505.4U CN202021359505U CN217560922U CN 217560922 U CN217560922 U CN 217560922U CN 202021359505 U CN202021359505 U CN 202021359505U CN 217560922 U CN217560922 U CN 217560922U
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- valve
- valve core
- core spring
- life test
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a valve case spring life test frock, include: the device comprises a valve, a base, a first pressing sheet, a second pressing sheet, a supporting frame, a cam and a corrugated pipe; the valve comprises a guide post, a valve end head and a valve rod, and the lower part of the valve rod is inserted into the guide post and is fixedly connected with the guide post; a mounting groove is formed in the base, a guide hole penetrating through the base is formed in the mounting groove, and the guide column is arranged in the guide hole; the first pressing piece and the second pressing piece are arranged on the mounting groove, and one end of the corrugated pipe is fixed on the mounting groove in a sealing mode; a through hole is formed in the center of the first pressing sheet and the second pressing sheet, and the valve rod penetrates through the through hole and is inserted into the guide post; the valve core spring is sleeved at the upper part of the valve rod, the top end of the valve core spring abuts against the valve end head, and the bottom end of the valve core spring abuts against the second pressing sheet; the supporting frame is used for supporting the valve and the base; the upper surface and the lower surface of the sliding block of the supporting frame are respectively contacted with the cam and the valve end head, and the other end of the corrugated pipe is hermetically fixed on the valve end head.
Description
Technical Field
The utility model relates to the technical field of valves, specifically be a valve case spring life test frock.
Background
A spring is a mechanical part that works by elasticity. The parts made of elastic materials deform under the action of external force, and recover to the original shape after the external force is removed, and the parts are also used as springs. Typically made of spring steel. The main failure modes are as follows: permanent deformation and fracture.
At present, a plurality of manufacturers producing springs in the market have different service lives, the service life given by the manufacturers is usually deduced, and although some manufacturers are tested by experiments, the testing working condition is far away from the actual working condition and is greatly different from the actual service life. For valves that include springs, the life of the spring also determines the life of the valve.
At present, service life tests of valve core springs of valves do not accurately simulate the service conditions (such as positive pressure and negative pressure in a pipe), and the defects that accurate service life values cannot be given exist. There is a need for new techniques and apparatus that at least partially address the problems of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a valve core spring life-span test fixture simulates true valve core spring service behavior, accurate test core spring life-span.
In order to achieve the above object, the utility model provides a following technical scheme: a valve core spring service life testing tool comprises a valve (10), a base (20), a first pressing sheet (50), a second pressing sheet (60), a supporting frame (70), a cam (80) and a corrugated pipe (90);
the valve (10) comprises a guide column (11), a valve end head (12) and a valve rod (13), wherein the lower part of the valve rod (13) is inserted into the guide column (11) and is fixedly connected with the guide column (11);
wherein a mounting groove (21) is formed in the base (20), a guide hole (22) penetrating through the base (20) is formed in the mounting groove (21), and the guide post (11) is disposed in the guide hole (22);
the first pressing sheet (50) and the second pressing sheet (60) are arranged on the mounting groove (21) and are used for sealing and fixing one end of the corrugated pipe (90) on the mounting groove (21); a through hole is formed in the center of the first pressing plate (50) and the second pressing plate (60), and the valve rod (13) passes through the through hole and is inserted into the guide column (11); the valve core spring (40) to be tested can be sleeved on the upper part of the valve rod (13), so that the top end of the valve core spring (40) abuts against the valve end head (12) and the bottom end of the valve core spring abuts against the second pressing sheet (60);
the supporting frame (70) comprises two supporting blocks (71), a sliding block (72) and a motor mounting plate (73), the two supporting blocks (71) are respectively arranged on two sides of the base (20), the lower parts of the supporting blocks (71) are fixedly connected with the base (20), and limiting holes (711) are formed in the upper parts of the supporting blocks (71); the slider (72) is connected with the two support blocks (71) through a guide stud (712) passing through the limiting hole (711), so that the slider (72) is arranged between the two support blocks (71), and the position of the slider (72) moving up and down is limited through the limiting hole (711);
the upper surface and the lower surface of the sliding block (72) are respectively contacted with the cam (80) and the valve end head (12), and the other end of the corrugated pipe (90) is fixed on the valve end head (12) in a sealing way.
According to an embodiment of the present invention, wherein the support frame (70) further comprises a fixing plate (74), the base (20) and the support block (71) are both fixed on the fixing plate (74).
According to the utility model discloses an embodiment, wherein valve case spring life-span test fixture still wraps gear motor (81) and motor mounting panel (73), and gear motor (81) are fixed on motor mounting panel (73), install cam (80) serve on the output shaft of gear motor (81).
According to the utility model discloses an embodiment, wherein valve core spring life test frock still includes interface (30), interface (30) are fixed on base (20) and communicate with guiding hole (22), interface (30) are the KF interface for example.
According to the utility model discloses an embodiment, valve case spring life test frock still include with interface (30) external tee bend, the manometer that the tee bend can be connected for pressure in the test confined space.
According to the utility model discloses an embodiment, valve case spring life test frock is still including the case direction lubricated cover that sets up between guiding hole (22) internal surface and guide post (11).
According to the utility model discloses an embodiment, valve core spring life-span test fixture is still including setting up sealing washer (14) on valve end head (12).
According to an embodiment of the present invention, the first pressing piece (50) is formed in a flange shape.
According to the utility model discloses an embodiment, the one end that second preforming (60) is close to valve rod (13) forms protruding (61), this protruding with a tip of bellows (90) forms the draw-in groove, and the bottom of the case spring (40) that awaits measuring can block in the draw-in groove.
According to the utility model discloses an embodiment, valve case spring life test frock still includes sealed pad (55) of setting between first preforming (50) and second preforming (60).
Drawings
FIG. 1 is a schematic view of the overall structure of the valve core spring life testing tool of the present invention;
FIG. 2 is a schematic view of a valve core spring life test fixture according to the present invention;
fig. 3 is a schematic view of a first pressing sheet structure in the valve core spring life testing tool of the utility model;
fig. 4 is a schematic structural view of the valve element spring life testing tool according to another angle;
fig. 5 is the utility model discloses a spatial structure sketch map of another angle of valve case spring life-span test fixture.
In the figure: 10. a valve; 11. a guide post; 12. a valve tip; 13. a valve stem; 14. a seal ring; 20. A base; 21. installing a groove; 22. a guide hole; 30. an interface; 40. a spool spring; 50. a first tablet; 55. a gasket; 60. a second tabletting; 61. a protrusion; 70. a support frame; 71. a supporting block, 72 and a sliding block; 73. a motor mounting plate; 74. a fixing plate; 711. a limiting hole; 712. a guide stud; 80. a cam; 81. a reduction motor; 90. a bellows; 91. a corrugated pipe joint;
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments are intended to more clearly illustrate the technical solutions of the present invention, and not to limit the present invention.
FIG. 1 is a schematic view of the overall structure of the valve core spring life testing tool of the present invention; FIG. 2 is a schematic view of a valve core spring life test fixture according to the present invention; fig. 3 is a schematic view of a first pressing sheet structure in the valve core spring life testing tool of the utility model; fig. 4 is the utility model discloses a structural schematic diagram of another angle of valve case spring life test fixture, fig. 5 is the utility model discloses a spatial structure schematic diagram of another angle of valve case spring life test fixture.
Referring to fig. 1, 2, 4 and 5, the valve spool spring life test fixture according to the embodiment of the present invention may include a valve (10), a base (20), an interface (30), a first pressing plate (50), a second pressing plate (60), a support frame (70), a cam (80) and a bellows (90).
The valve (10) may include a guide post (11), a valve end (12), a valve stem (13), and a valve core (not labeled), wherein a lower portion of the valve stem (13) is inserted into the guide post (11) and is fixedly connected with the guide post (11), for example, the two may be connected by a screw thread. The valve (10) may further include a sealing ring 14 disposed on the valve end (12). The sealing ring 14 is disposed on the periphery of the top surface of the valve head and is capable of sealing. In the utility model discloses a, this sealing washer 14 and cam (80) contact can play the effect of buffering.
A mounting recess (21) may be formed in the base (20), and the valve (10) may be supported in the mounting recess (21). More specifically, a guide hole (22) penetrating through the base (20) is formed in the mounting groove (21), the stem (13) of the valve (10), the guide post (11) pass through the mounting groove (21) and the guide hole (22), and the guide post (11) is disposed in the guide hole (22). The guide hole (22) is in accordance with the shape of the guide post (11), for example, substantially in the shape of a circular hole, and the size of the guide hole (22) is matched with the size of the guide post (11) so that the guide post (11) can stably move in a constant direction in the guide hole (22). In order to make the movement smoother, a lubricating material can be plated on the inner surface of the guide hole (22), and a valve core guide lubricating sleeve (not shown) between the inner surface and the guide post (11) can also be arranged, namely the valve core guide lubricating sleeve is sleeved on the periphery of the guide post (11) so as to reduce abrasion.
In order to detect the valve core spring (40), the corrugated pipe (90) is fixed on the valve, the lower end of the corrugated pipe (90) is hermetically arranged and supported on the base (20), and the valve core spring (40) to be detected is arranged inside the corrugated pipe (90).
More specifically, with further reference to fig. 3 and 5, the first presser plate (50) may be formed in a flange shape, with the entire first presser plate (50) being disposed substantially in the mounting groove (21) with the flange plate overlapping the upper surface of the base (20). Threaded holes are formed in the flange, and corresponding threaded holes may be formed in the surface of the base (20) so that the first presser plate (50) may be fixed to the base (20) by screws. The second pressing sheet (60) can be formed into a ring shape, a circular through hole is formed in the middle, and the valve rod (13) can penetrate through the circular through hole; the second presser piece (60) is disposed on the bottom surface of the mounting groove (21). The valve core spring (40) to be detected is sleeved on the upper portion of the valve rod (13), the top end of the valve core spring (40) abuts against the valve end head (12), and the bottom end of the valve core spring (40) abuts against the second pressing sheet (60). In order to more firmly arrange the valve core spring, the second pressing sheet (60) can form a bulge (61) at one end close to the valve rod (13), the bulge and the lower end (91) of the corrugated pipe (90) form a clamping groove, and the bottom end of the valve core spring (40) can be clamped in the clamping groove. When the valve head (12) is pressed by the cam (80) to move downwards and further press the corrugated pipe (90), the valve core spring (40) is also pressed, and when the cam (80) rotates to a position where the valve head (12) is not pressed downwards, the valve core spring (40) rebounds, so that the corrugated pipe (90) is restored to the original position. It should be understood that the diameter of the guide post (11) is larger than that of the circular through hole of the second presser piece (60), and thus, the top surface of the guide post (11) may be disposed substantially flush with the top of the guide hole (22) in the normal state (home position) of the spool spring (40); and the arrangement may be such that when the cam is rotated to a minimum radius against the valve head (12), the spool spring (40) is in place and not compressed.
Referring to the drawings, the upper end of the bellows (90) may be sealingly fixedly connected (e.g., welded) to the valve end (12), and the lower end (bellows joint) of the bellows (90) is compressed between the flange of the first presser plate (50) and the second presser plate (60). Therefore, the first pressing piece (50), the second pressing piece (60) and the bellows joint 91 can be tightly pressed against the bottom surface of the mounting groove (21) by the pressing of the screw, thereby achieving sealing. Preferably, a sealing gasket 55 (e.g., a teflon gasket) may be provided between the first pressing plate (50), the second pressing plate (60), and the bellows joint 91, thereby achieving a better sealing effect.
As shown, the support frame (70) of the present embodiment may include two support blocks (71), a slider (72), a motor mounting plate (73), and a fixing plate (74). The base (20), the supporting block (71) and the motor mounting plate (73) are all fixed on the fixing plate (74). The two supporting blocks (71) are respectively arranged on two sides of the base (20), and the lower parts of the supporting blocks (71) are fixedly connected with the base (20) (for example, connected through screws or welded). A limiting hole (711) is formed at the upper part of the supporting block (71); the slider (72) is connected to the two support blocks (71) by a guide stud (712) passing through the restriction hole (711), whereby the slider (72) is disposed between the two support blocks (71), and the position of the slider (72) moving up and down is restricted by the restriction hole (711). The height above and below the limiting hole (711) may be determined based on the cam (80) and the particular spool spring (40) to be tested.
According to the utility model discloses an embodiment, valve case spring life-span test fixture still includes gear motor (81), and gear motor (81) are fixed on motor mounting panel (73), install cam (80) serve on the output shaft of gear motor (81). The cam (80) is in contact with the upper surface of the sliding block (72), and the speed reducing motor (81) drives the cam (80) to rotate, so that the sliding block (72) is driven to move.
Referring to the drawings, according to the embodiment of the invention, the valve core spring life test tool further comprises an interface (30), the interface (30) passes through the fixing plate (74) and is hermetically fixed on the base (20) and communicated with the guide hole (22), and the interface (30) can be a KF interface, for example. The interface (30) can be further externally connected with a tee joint, and therefore the other two interfaces of the tee joint can be provided with a pressure gauge and a high-pressure gas circuit or a vacuum pipeline. The high-pressure gas circuit or the vacuum pipeline can apply pressure or vacuumize to the sealed space, and the pressure gauge can detect the pressure in the sealed space.
As described above, in the embodiment of the present invention, a sealed space is formed by the bellows (90), the valve end (12) of the valve (10), the mounting groove (21) and the guide hole (22) of the base (20), the first pressing piece (50), the second pressing piece (60), the interface (30), the pressure gauge, and the high pressure gas circuit or the vacuum pipeline, and the valve core spring (40) to be detected is disposed in the space, so that the pressure can be applied or the vacuum can be pumped through the high pressure gas circuit or the vacuum pipeline, and the real usage pressure environment of the valve core spring (40) can be simulated. In addition, the rotating shaft end of the speed reducing motor 81 is connected with the cam 80, and the slider, the corrugated pipe 90 and the valve core spring 40 are driven to reciprocate through the rotation of the natural frequency of the motor.
The utility model discloses an equipment fixing is good the back, manages to find time or fills the high pressure to the bellows inner chamber through external gas circuit earlier, simulates true service environment, then closes external valve, and the starter motor makes case spring 40 and bellows 90 reciprocating motion, because the rotational speed in the gear motor unit interval is invariable, and in case valve case spring became invalid, the bellows will not bounce again, so can obtain spring service life according to the operating duration when becoming invalid.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a valve case spring life test frock which characterized in that includes: the valve comprises a valve (10), a base (20), a first pressing sheet (50), a second pressing sheet (60), a supporting frame (70), a cam (80) and a corrugated pipe (90);
the valve (10) comprises a guide column (11), a valve end head (12) and a valve rod (13), wherein the lower part of the valve rod (13) is inserted into the guide column (11) and is fixedly connected with the guide column (11);
wherein a mounting groove (21) is formed in the base (20), a guide hole (22) penetrating through the base (20) is formed in the mounting groove (21), and the guide post (11) is disposed in the guide hole (22);
the first pressing sheet (50) and the second pressing sheet (60) are arranged on the mounting groove (21) and are used for sealing and fixing one end of the corrugated pipe (90) on the mounting groove (21); a through hole is formed in the center of the first pressing plate (50) and the second pressing plate (60), and the valve rod (13) passes through the through hole and is inserted into the guide column (11); the valve core spring (40) to be tested can be sleeved on the upper part of the valve rod (13), so that the top end of the valve core spring (40) abuts against the valve end head (12) and the bottom end of the valve core spring abuts against the second pressing sheet (60);
the supporting frame (70) comprises two supporting blocks (71), a sliding block (72) and a motor mounting plate (73), the two supporting blocks (71) are respectively arranged on two sides of the base (20), the lower parts of the supporting blocks (71) are fixedly connected with the base (20), and limiting holes (711) are formed in the upper parts of the supporting blocks (71); the slider (72) is connected to the two support blocks (71) by a guide stud (712) passing through the restriction hole (711), thereby disposing the slider (72) between the two support blocks (71) and restricting the position of the slider (72) moving up and down by the restriction hole (711);
the upper surface and the lower surface of the sliding block (72) are respectively contacted with the cam (80) and the valve end head (12), and the other end of the corrugated pipe (90) is hermetically fixed on the valve end head (12).
2. The valve core spring life test tool of claim 1, characterized in that: the supporting frame (70) further comprises a fixing plate (74), and the base (20) and the supporting block (71) are fixed on the fixing plate (74).
3. The valve core spring life test tool of claim 1, characterized in that: still include gear motor (81) and motor mounting panel (73), gear motor (81) are fixed on motor mounting panel (73), cam (80) are installed on gear motor (81)'s the output shaft end.
4. The valve core spring life test tool of claim 1, characterized in that: the connector also comprises a connector (30), wherein the connector (30) is fixed on the base (20) and is communicated with the guide hole (22).
5. The valve core spring life test tool according to claim 4, characterized in that: the interface (30) is a KF interface.
6. The valve core spring life test tool of claim 1, characterized in that: the valve core guide lubricating sleeve is arranged between the inner surface of the guide hole (22) and the guide column (11).
7. The valve core spring life test tool of claim 1, characterized in that: the valve also comprises a sealing ring (14) arranged on the valve head (12).
8. The valve core spring life test tool of claim 1, characterized in that: the first presser plate (50) is formed in a flange shape.
9. The valve core spring life test tool of claim 1, characterized in that: one end of the second pressing sheet (60) close to the valve rod (13) is provided with a bulge (61), the bulge and the lower end part of the corrugated pipe (90) form a clamping groove, and the bottom end of the valve core spring (40) to be tested can be clamped in the clamping groove.
10. The valve core spring life test tool according to claim 1, characterized in that: and a sealing gasket (55) arranged between the first pressing plate (50) and the second pressing plate (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021359505.4U CN217560922U (en) | 2020-07-10 | 2020-07-10 | Valve case spring life test frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021359505.4U CN217560922U (en) | 2020-07-10 | 2020-07-10 | Valve case spring life test frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217560922U true CN217560922U (en) | 2022-10-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021359505.4U Active CN217560922U (en) | 2020-07-10 | 2020-07-10 | Valve case spring life test frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217560922U (en) |
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2020
- 2020-07-10 CN CN202021359505.4U patent/CN217560922U/en active Active
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| GR01 | Patent grant | ||
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Address after: 637221 Duofu Industrial Park, Xichong County, Nanchong City, Sichuan Province Patentee after: SICHUAN JIUTIAN VACUUM TECHNOLOGY CO.,LTD. Country or region after: China Address before: 637221 Duofu Industrial Park, Xichong County, Nanchong City, Sichuan Province Patentee before: SICHUAN JIUTIAN VACUUM TECHNOLOGY Co.,Ltd. Country or region before: China |