Anti-particle combination valve

Abstract

The utility model discloses an anti-particle combination valve, which comprises a valve body, a valve core, a valve core and a valve core, the driving mechanism is connected to the side wall of the valve body; one end of the valve rod is connected with the driving mechanism; the valve element is arranged in the valve body and connected with the other end of the valve rod, when the valve rod is linked by the driving mechanism, the valve element is linked by the valve rod, the valve element moves in the valve body, and the gas channel is opened or closed; the protection piece is connected to the side wall of the valve body and arranged opposite to the driving mechanism, one end of the protection piece makes contact with the gas channel, and the valve element abuts against the protection piece when the gas channel is closed by the valve element; the protection piece is made of stainless steel; the part, making contact with the protection piece, of the valve element is made of stainless steel. Therefore, the technical problem that particles generated by contact friction between the valve element and the valve body pollute a vacuum system is solved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a particulate-proof combination valve. Background Technology

[0002] A vacuum combination valve is a type of valve used in vacuum systems, serving functions such as airflow control, vacuum isolation, equipment protection, and safety assurance.

[0003] The structure of a vacuum combination valve generally includes: valve body, valve core assembly, valve stem and drive mechanism. The drive mechanism drives the valve stem to move, and the valve stem moves in conjunction with the valve core assembly to realize the opening and closing of the valve, thereby controlling the flow of gas in the vacuum system.

[0004] When the valve core assembly is in the closed state, a completely sealed space is formed between the valve core assembly and the valve body to prevent gas from leaking from the passage on the valve body.

[0005] When the valve core assembly is opened, the valve core assembly separates from the valve body, and gas can flow through the channel on the valve body;

[0006] In existing technologies, the valve core and valve body come into contact and rub against each other during operation. Over time, the particles generated by this friction will contaminate the vacuum system. Utility Model Content

[0007] In view of the above-mentioned shortcomings in the related technologies, the purpose is to provide a particle-proof combination valve to solve the technical problem that particles generated by contact friction between the valve core and the valve body contaminate the vacuum system.

[0008] The technical solution to achieve the objective is: a particulate-proof combination valve, comprising: a valve body having a gas passage;

[0009] The drive mechanism is connected to the side wall of the valve body;

[0010] The valve stem is connected at one end to the drive mechanism;

[0011] A valve core is disposed in the valve body and connected to the other end of the valve stem. When the valve stem is driven by the drive mechanism, the valve core is driven by the valve stem, and the valve core moves within the valve body to open or close the gas passage.

[0012] And a protective component, connected to the side wall of the valve body and disposed opposite to the drive mechanism, one end of the protective component is in contact with the gas passage, and is used so that the valve core abuts against the protective component when the valve core closes the gas passage;

[0013] The protective component is made of stainless steel;

[0014] The part of the valve core that contacts the protective component is made of stainless steel.

[0015] Furthermore: one end of the valve stem is connected to the drive mechanism, and two countersunk surfaces are symmetrically arranged on the other end;

[0016] The countersunk surface is provided with a number of first guide grooves at intervals.

[0017] Furthermore: the valve core includes: a first stop body disposed on one side of the valve stem, and a plurality of second guide grooves on one side wall of the first stop body, wherein the second guide grooves are matched one-to-one with the first guide grooves;

[0018] The second stop is located on the other side of the valve stem, opposite to the first stop. The second stop has several third guide grooves on one side wall, and the third guide grooves are matched one-to-one with the first guide grooves.

[0019] An elastic element is connected between the first stop and the second stop, and one end of the elastic element contacts the protective element when the valve core closes the gas passage;

[0020] And several valve balls, one-to-one arranged between the second guide groove and the first guide groove, and one-to-one arranged between the third guide groove and the first guide groove.

[0021] Furthermore: the first stop includes: a first baffle, with the elastic member connected to one side wall, and the first baffle has a second guide groove on one side wall;

[0022] And a sealing ring, which is connected to a sealing groove on the other side wall of the first baffle.

[0023] Furthermore: the second stop includes: a second baffle, on one side wall of which the elastic member is connected, and the third guide groove is on one side wall of the second baffle;

[0024] And a shock-absorbing strip, connected to an inner groove on the other side wall of the second baffle.

[0025] Furthermore: the elastic element is a leaf spring.

[0026] Furthermore: the number of the first guide grooves is four, and two of the first guide grooves are disposed on one of the countersink planes;

[0027] The number of the second guide grooves is two;

[0028] The number of the third guide grooves is two.

[0029] Furthermore: the first guide groove, the second guide groove, and the third guide groove have the same structure, all including: a shallow groove and a deep groove;

[0030] The shallow groove and the deep groove are connected, and the shallow groove and the deep groove are matched with the shape of the valve ball;

[0031] When the valve ball is in the shallow groove, the elastic element is stretched open, and the first and second stops block the gas passage, thus closing the gas passage.

[0032] When the valve ball is in the deep groove, the elastic element returns to its original position, and the first and second stops open the gas passage.

[0033] Furthermore: the protective component is a plunger.

[0034] Furthermore: the protective component is made of 316L stainless steel;

[0035] The elastic element is made of SUS301 stainless steel.

[0036] The above technical solution has the following beneficial effects: a particulate-proof combination valve, compared with related technologies, is provided with a valve body, a drive mechanism, a valve stem, a valve core, and protective components;

[0037] The drive mechanism is linked to the valve stem, which in turn moves the valve core along the valve body, opening or closing the gas passage.

[0038] When the valve core closes the gas passage, the valve core contacts the protective component, and the valve core will not rub against the valve body, thus protecting the valve body. The protective component is made of stainless steel, and the part of the valve core that contacts the protective component is also made of stainless steel, reducing the chance of impact generating particles.

[0039] This overcomes the technical problem of particles generated by contact friction between the valve core and valve body contaminating the vacuum system, achieving the technical effect of reducing the probability of friction-generated particles and protecting the vacuum system, and is practical. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall assembly structure;

[0041] Figure 2 A partial cross-sectional view of the valve core when the gas passage is open;

[0042] Figure 3 A partial cross-sectional view of the valve core when the gas passage is closed;

[0043] Figure 4 A schematic diagram of the valve stem and valve ball;

[0044] Figure 5 This is one of the structural schematic diagrams of the first barrier;

[0045] Figure 6 This is the second structural schematic diagram of the first baffle.

[0046] Figure 7 This is one of the structural schematic diagrams of the second baffle.

[0047] Figure 8 This is the second structural schematic diagram of the second baffle.

[0048] Figure 9 This is a partial schematic diagram of the valve stem, valve ball, first baffle, second baffle, and elastic element assembly.

[0049] Figure 10 This is a schematic diagram of the elastic element.

[0050] In the diagram: 10. Valve body, 11. Gas passage, 20. Drive mechanism, 30. Valve stem, 31. Countersunk surface, 31-1. First guide groove, 40. Valve core, 41. First stop, 41-1. Second guide groove, 41-2. First baffle, 41-21. Sealing groove, 41-3. Sealing ring, 42. Second stop, 42-1. Third guide groove, 42-2. Second baffle, 42-21. Inner groove, 42-3. Shock absorber strip, 43. Elastic element, 43-1. Intermediate main body, 43-2. ​​Bending arm, 44. Valve ball, 31-11. Shallow groove, 31-12. Deep groove, 50. Protective element. Detailed Implementation

[0051] To make the content easier to understand, the following detailed description is provided with reference to specific embodiments and accompanying drawings;

[0052] A particle-resistant combination valve solves the technical problem in related technologies where particles generated by contact friction between the valve core and valve body contaminate the vacuum system. This new valve can be manufactured and used, achieving the positive effect of reducing the probability of friction-generated particles and protecting the vacuum system. The overall concept is as follows:

[0053] Implementation

[0054] like Figure 1 , Figure 2 , Figure 3 As shown; a particulate-proof combination valve includes: a valve body 10, wherein the valve body 10 has a gas passage 11;

[0055] The drive mechanism 20 is connected to the side wall of the valve body 10;

[0056] One end of the valve stem 30 is connected to the drive mechanism 20;

[0057] The valve core 40 is disposed inside the valve body 10 and connected to the other end of the valve stem 30. When the valve stem 30 is driven by the drive mechanism 20, the valve core 40 is driven by the valve stem 30. The valve core 40 moves within the valve body 10 to open or close the gas passage 11.

[0058] And a protective element 50, connected to the side wall of the valve body 10, is disposed opposite to the drive mechanism 20. One end of the protective element 50 is in contact with the gas passage 11, and is used so that when the valve core 40 closes the gas passage 11, the valve core 40 abuts against the protective element 50.

[0059] The protective component 50 is made of stainless steel;

[0060] The part of the valve core 40 that contacts the protective element 50 is made of stainless steel;

[0061] Specifically, during implementation, the drive mechanism 20 is linked to the valve stem 30, and the valve stem 30 is linked to the valve core 40 to move along the valve body 10. The valve core 40 opens or closes the gas passage 11.

[0062] When the valve core 40 closes the gas passage 11, the valve core 40 contacts the protective element 50. The valve core 40 will not directly contact the valve body 10 and will not rub against the valve body 10, thus protecting the valve body 10. The protective element 50 is made of stainless steel, and the part of the valve core 40 that contacts the protective element 50 is also made of stainless steel, which reduces the probability of impact generating particles and protects the vacuum system.

[0063] Another implementation method:

[0064] like Figure 1 , Figure 2 , Figure 3 As shown; in practice, the valve body 10 has a roughly cylindrical shape and a gas passage 11. When the valve core 40 blocks the gas passage 11, the gas passage 11 is closed and the gas in the vacuum system cannot flow. When the valve core 40 opens the gas passage 11, the gas passage 11 is opened and the gas in the vacuum system can flow.

[0065] Another implementation method:

[0066] like Figure 1 , Figure 2 , Figure 3 As shown; in practice, the drive mechanism 20 is a common structure in the prior art, such as a cylinder, which is connected to the side wall of the valve body 10 and used to link the valve stem 30 to move.

[0067] Another implementation method:

[0068] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 9 As shown; in practice, the valve stem 30 is a section of round rod, one end of the valve stem 30 is connected to the drive mechanism 20, and two countersunk planes 31 are symmetrically arranged on the other end;

[0069] Several first guide grooves 31-1 are provided at intervals on the countersink plane 31;

[0070] A first guide groove 31-1 is provided, which is used to cooperate with the second guide groove 41-1, the third guide groove 42-1 and the valve ball 44, which is beneficial to the valve stem 30 in conjunction with the valve core 40.

[0071] Another implementation method:

[0072] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown; in implementation, the valve core 40 includes: a first stop 41, disposed on one side of the valve stem 30, with a plurality of second guide grooves 41-1 on one side wall of the first stop 41, the second guide grooves 41-1 being paired with the first guide grooves 31-1 one-to-one; a second stop 42, disposed on the other side of the valve stem 30, opposite to the first stop 41, with a plurality of third guide grooves 42-1 on one side wall of the second stop 42, the third guide grooves 42-1 being paired with the first guide grooves 31-1 one-to-one; an elastic member 43, connected between the first stop 41 and the second stop 42, and when the valve core 40 closes the gas passage 11, one end of the elastic member 43 contacts the protective member 50; and a plurality of valve balls 44, one-to-one disposed between the second guide grooves 41-1 and the first guide grooves 31-1, and one-to-one disposed between the third guide grooves 42-1 and the first guide grooves 31-1;

[0073] The first baffle 41 includes: a first baffle 41-2, on one side wall of which the elastic member 43 is connected, and the first baffle 41-2 has a second guide groove 41-1 on one side wall; and a sealing ring 41-3, which is connected to a sealing groove 41-21 on the other side wall of the first baffle 41-2.

[0074] The first baffle 41-2 is a circular plate structure, and the sealing ring 41-3 is an O-ring, which helps to block and seal the gas passage 11.

[0075] The second baffle 42 includes: a second baffle 42-2, on one side wall of which the elastic member 43 is connected, and the second baffle 42-2 has the third guide groove 42-1 on one side wall; and a shock-absorbing strip 42-3, which is connected to the inner groove 42-21 on the other side wall of the second baffle 42-2.

[0076] The second baffle 42-2 is a circular plate structure; the inner groove 42-21 is an arc-shaped groove; the shock-absorbing strip 42-3 is a rubber strip, which can reduce the friction between the second baffle 42-2 and the valve body 10, reduce the probability of friction generating particles, and also has the function of shock absorption, reducing noise;

[0077] The elastic element 43 is a leaf spring;

[0078] The leaf spring includes: a central body 43-1, one end of which is used to contact the protective member 50, and the other end is connected to the second baffle 42-2; and two bending arms 43-2, symmetrically connected to the side wall of the central body 43-1, one end of which is connected to the central body 43-1, and the other end is connected to the first baffle 41-2, and the other end of which is not on the same plane as the central body 43-1, and there is an elastic space between them.

[0079] When the valve ball 44 is located in the shallow groove 31-11, the blade spring is stretched open, and the elastic space becomes larger. At this time, the first stop 41 and the second stop 42 block the gas passage 11, and the gas passage 11 is closed.

[0080] When the valve ball 44 is in the deep groove 31-12, the blade spring returns to its original position, and the elastic space returns to its initial position. At this time, the first stop 41 and the second stop 42 are not in contact with the valve body 10, and the gas passage 11 is opened.

[0081] Among them, valve ball 44 is a sphere, and there are four of them;

[0082] The number of first guide grooves 31-1 is four, with two first guide grooves 31-1 disposed on one countersunk plane 31; the number of second guide grooves 41-1 is two; and the number of third guide grooves 42-1 is two.

[0083] The first guide groove 31-1, the second guide groove 41-1 and the third guide groove 42-1 have the same structure, all including: shallow groove 31-11 and deep groove 31-12;

[0084] The shallow groove 31-11 and the deep groove 31-12 are connected, and the shallow groove 31-11 and the deep groove 31-12 are matched with the shape of the valve ball 44;

[0085] When the valve ball 44 is in the shallow groove 31-11, the elastic element 43 is stretched open, the first stop 41 and the second stop 42 block the gas passage 11, and the gas passage 11 is closed.

[0086] When the valve ball 44 is in the deep groove 31-12, the elastic element 43 returns to its original position, and the first stop 41 and the second stop 42 open the gas passage 11;

[0087] See Figure 2 and Figure 3 When valve core 40 is at the left end (e.g.) Figure 2 When the valve ball 44 is in the deep groove 31-12 under the action of the elastic element 43 (leaf spring), the first stop 41 and the second stop 42 are not in contact with the valve body 10. Under the linkage of the drive mechanism 20, the valve core 40 moves to the right, one end of the middle body 43-1 on the elastic element 43 contacts the protective element 50, the valve ball 44 is in the shallow groove 31-11, the first stop 41 and the second stop 42 are opened, and the gas passage 11 is closed (as shown). Figure 3 Conversely, when the drive mechanism 20 moves the valve core 40 to the left, under the restoring force of the leaf spring, the valve ball 44 gradually moves from the shallow groove 31-11 to the deep groove 31-12. The first stop 41 and the second stop 42 separate from the valve body 10, and the valve core 40 is moved to the leftmost position by the drive mechanism 20, opening the gas passage 11 (as shown). Figure 2 );

[0088] That is, when the valve ball 44 is in the shallow groove 31-11, the first stop 41 and the second stop 42 will contact the valve body 10. When the valve ball 44 is in other positions, the first stop 41 and the second stop 42 will not contact the valve body 10.

[0089] Another implementation method:

[0090] like Figure 1 , Figure 2 , Figure 3 , Figure 10 As shown; in practice, the protective component 50 is a plunger, with a roughly "T" shaped structure;

[0091] When the drive mechanism 20 is activated, the valve stem 30 moves in conjunction with the valve core 40, which in turn moves the valve core 40 within the valve body 10. One end of the elastic element 43 on the valve core 40 contacts the protective element 50. At this time, the positions of the first stop 41 and the second stop 42 are aligned with the gas passage 11. The valve stem 30 continues to move, and the valve ball 44 enters the shallow groove 31-11. The elastic element 43 is stretched open, and the first stop 41 and the second stop 42 block the gas passage 11, thus closing the gas passage 11.

[0092] The protective component 50 is made of 316L stainless steel, and the elastic component 43 is made of SUS301 stainless steel. The two materials are similar and have similar hardness. When in contact, the wear is relatively small, reducing the probability of impact generating particles.

[0093] In the description, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings, and are only for the convenience or simplification of the description, rather than indicating a specific orientation that must be present; the operation process described in the embodiments is not an absolute usage step, and corresponding adjustments can be made in actual use;

[0094] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art; the words “first,” “second,” and similar terms used in the specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components, and similarly, the words “a” or “a” and similar terms do not determine a quantity limitation, but rather indicate the presence of at least one, as determined by the content of the embodiments;

[0095] The above description is only a preferred embodiment, but the scope of protection is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the disclosed technology, based on the technical solution and inventive concept, should be included within the scope of protection.

Claims

1. A combination valve for preventing particles, characterized by, include: Valve body, wherein the valve body has a gas passage; The drive mechanism is connected to the side wall of the valve body; The valve stem is connected at one end to the drive mechanism; A valve core is disposed in the valve body and connected to the other end of the valve stem. When the valve stem is driven by the drive mechanism, the valve core is driven by the valve stem, and the valve core moves within the valve body to open or close the gas passage. And a protective component, connected to the side wall of the valve body and disposed opposite to the drive mechanism, one end of the protective component is in contact with the gas passage, and is used so that the valve core abuts against the protective component when the valve core closes the gas passage; The protective component is made of stainless steel; The part of the valve core that contacts the protective component is made of stainless steel.

2. A combination valve according to claim 1, wherein: One end of the valve stem is connected to the drive mechanism, and two countersunk surfaces are symmetrically arranged on the other end. The countersunk surface is provided with a number of first guide grooves at intervals.

3. A combination valve according to claim 2, wherein: The valve core includes: a first stop body disposed on one side of the valve stem, and a plurality of second guide grooves on one side wall of the first stop body, wherein the second guide grooves are matched one-to-one with the first guide grooves; The second stop is located on the other side of the valve stem, opposite to the first stop. The second stop has several third guide grooves on one side wall, and the third guide grooves are matched one-to-one with the first guide grooves. An elastic element is connected between the first stop and the second stop, and one end of the elastic element contacts the protective element when the valve core closes the gas passage; And several valve balls, one-to-one arranged between the second guide groove and the first guide groove, and one-to-one arranged between the third guide groove and the first guide groove.

4. A combination valve according to claim 3, wherein: The first baffle includes: a first baffle, with the elastic member connected to one side wall, and the first baffle has a second guide groove on one side wall; And a sealing ring, which is connected to a sealing groove on the other side wall of the first baffle.

5. A particulate-proof combination valve according to claim 3, characterized in that: The second baffle includes: a second baffle plate, on one side wall of which the elastic element is connected, and the third guide groove is on one side wall of the second baffle plate; And a shock-absorbing strip, connected to an inner groove on the other side wall of the second baffle.

6. A combination valve according to claim 3, wherein: The elastic element is a leaf spring.

7. A combined valve according to claim 3 or 4 or 5, wherein: The number of the first guide grooves is four, and two of the first guide grooves are disposed on one of the countersink planes; The number of the second guide grooves is two; The number of the third guide grooves is two.

8. A combination valve according to claim 7, wherein: The first guide groove, the second guide groove, and the third guide groove have the same structure, all including: a shallow groove and a deep groove; The shallow groove and the deep groove are connected, and the shallow groove and the deep groove are matched with the shape of the valve ball; When the valve ball is in the shallow groove, the elastic element is stretched open, and the first and second stops block the gas passage, thus closing the gas passage. When the valve ball is in the deep groove, the elastic element returns to its original position, and the first and second stops open the gas passage.

9. A combination valve according to claim 3 or 6, wherein: The protective component is a plunger.

10. A combination valve according to claim 9, wherein: The material of the protection member is 316L stainless steel. The material of the elastic member is SUS301 stainless steel.

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