Piston mechanism with one-way valve

Abstract

The utility model discloses a piston mechanism with a one-way valve. The piston mechanism comprises a fixed valve body and a valve element assembly. A clamping groove is formed in the fixed valve body, a valve element support is clamped in the clamping groove, a first limiting groove is formed in the fixed valve body, a first O-shaped ring is arranged in the first limiting groove, and a slope is formed in the end, close to the sealing plug, of the fixed valve body. The valve element assembly is installed on the fixed valve body and comprises a valve element body, a connecting stud is fixed to one end of the valve element body, a sealing plug is connected to the connecting stud in a threaded mode, a pressing block is fixed to the end, away from the connecting stud, of the valve element body, a groove is formed in the pressing block, and a pushing spring is fixedly connected between the pressing block and the valve element support. And a valve core shaft sleeve is fixed on the valve core bracket. Through the arrangement of corresponding mechanisms, the piston mechanism on the reagent split charging assembly line has a one-way circulation function, so that liquid is not easy to leak, and unnecessary troubles are reduced for users.

Description

Technical Field

[0001] This utility model belongs to the field of one-way valve technology, specifically relating to a piston mechanism with a one-way valve. Background Technology

[0002] A reagent dispensing line is a production equipment system used to automatically and efficiently dispense reagents into various containers (such as reagent bottles, reagent cards, etc.) according to set dosages and specifications. The piston assembly is the core component of the equipment mechanism, used to perform reciprocating motion driven by a cylinder. However, existing piston mechanisms often lack unidirectional flow capability, making liquid leakage prone to occur during dispensing, thus affecting equipment operation and causing unnecessary trouble for users.

[0003] Therefore, to address the aforementioned technical problems, it is necessary to provide a piston mechanism with a one-way valve.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a piston mechanism with a one-way valve, which can solve the problem that the piston mechanism in the prior art does not have a one-way flow function, which leads to easy liquid leakage.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a piston mechanism with a one-way valve, comprising: a fixed valve body and a valve core assembly;

[0007] The fixed valve body has a slot, and a valve core bracket is engaged in the slot;

[0008] The valve core assembly is mounted on the fixed valve body. The valve core assembly includes a valve core body. A connecting stud is fixed to one end of the valve core body. A sealing plug is threaded onto the connecting stud. A pressure block is fixed to the end of the valve core body away from the connecting stud. A groove is chiseled on the pressure block. A push spring is fixedly connected between the pressure block and the valve core bracket.

[0009] In one or more embodiments of this utility model, a first limiting groove is chiseled on the fixed valve body to facilitate locking the first O-ring and prevent the first O-ring from falling off. The first O-ring is provided in the first limiting groove and is sleeved on the fixed valve body to improve sealing and prevent leakage.

[0010] In one or more embodiments of this utility model, the fixed valve body has a ramp at one end near the sealing valve to hold the valve core support in place, making it difficult for the valve core support to move or change position, thereby restricting the valve core body and preventing it from tilting.

[0011] In one or more embodiments of this utility model, a valve core bushing is fixed on the valve core bracket, and the valve core body is disposed through the valve core bushing to limit the valve core body and prevent the valve core body from tilting when it moves.

[0012] In one or more embodiments of this utility model, a second limiting groove is cut into the sealing cap to hold the second O-ring in place, making it difficult for the second O-ring to fall off. The second O-ring is provided in the second limiting groove and is fitted onto the sealing cap to improve the sealing performance between the sealing cap and the fixed valve body, thereby making leakage less likely.

[0013] In one or more embodiments of this utility model, a hexagonal nut is threaded to the end of the valve core body away from the connecting stud, which serves to limit the pressure block and prevent it from falling off.

[0014] In one or more embodiments of this utility model, the valve core body is widened at one end near the connecting stud.

[0015] Compared with the prior art, this utility model, through the setting of a corresponding mechanism, enables the piston mechanism on the reagent dispensing line to have a unidirectional flow function, thereby making it less likely for liquid to leak and reducing unnecessary trouble for users. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a piston mechanism with a one-way valve according to an embodiment of the present invention.

[0018] Figure 2 This is a cross-sectional view of a piston mechanism with a one-way valve in one embodiment of the present invention;

[0019] Figure 3 for Figure 2 The structural diagram shown at point A in the middle;

[0020] Figure 4This is a partial structural diagram of a piston mechanism with a one-way valve in one embodiment of the present invention.

[0021] Explanation of key figure labels:

[0022] 1-Fixed valve body, 101-Slot, 102-First limiting slot, 103-Slope, 104-Valve core bracket, 105-Valve core bushing, 106-First O-ring, 2-Valve core assembly, 201-Valve core body, 202-Connecting stud, 203-Sealing stopper, 204-Second limiting slot, 205-Second O-ring, 206-Hex nut, 207-Pressure block, 208-Push spring, 209-Groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0024] like Figures 1 to 4 As shown, a piston mechanism with a one-way valve in one embodiment of the present invention includes: a fixed valve body 1 and a valve core assembly 2.

[0025] like Figures 1 to 3 As shown, a groove 101 is cut into the fixed valve body 1 to easily hold the valve core support 104, preventing the valve core support 104 from falling off. The valve core support 104 is engaged in the groove 101, providing a limiting and supporting function for the valve core body 201. A first limiting groove 102 is cut into the fixed valve body 1 to easily hold the first O-ring 106, preventing the first O-ring 106 from falling off. The first O-ring 106 is disposed in the first limiting groove 102 and is fitted onto the fixed valve body 1 to improve sealing and prevent leakage.

[0026] like Figures 1 to 2 As shown, a ramp 103 is cut at one end of the fixed valve body 1 near the sealing cap 203 to hold the valve core support 104 in place, preventing the valve core support 104 from moving and thus restricting the valve core body 201, preventing it from tilting. A valve core bushing 105 is fixed on the valve core support 104, and the valve core body 201 passes through the valve core bushing 105 to limit the movement of the valve core body 201 and prevent it from tilting.

[0027] like Figures 1 to 4As shown, the valve core assembly 2 is mounted on the fixed valve body 1. The valve core assembly 2 includes a valve core body 201, which is used to push the sealing valve 203 and drive the sealing valve 203 to reset. A connecting stud 202 is fixed to one end of the valve core body 201 to connect the valve core body 201 and the sealing valve 203, thereby facilitating the pulling of the sealing valve 203 through the valve core body 201. The end of the valve core body 201 near the connecting stud 202 is widened.

[0028] like Figures 1 to 3 As shown, a sealing plug 203 is threaded onto the connecting stud 202 to seal one side of the fixed valve body 1. A pressure block 207 is fixed to the end of the valve core body 201 away from the connecting stud 202. A groove 209 is chiseled on the pressure block 207. A push spring 208 is fixedly connected between the pressure block 207 and the valve core bracket 104.

[0029] like Figures 1 to 4 As shown, a second limiting groove 204 is cut into the sealing stop 203 to hold the second O-ring 205 in place, preventing it from falling off. The second O-ring 205 is installed inside the second limiting groove 204 and is fitted onto the sealing stop 203 to improve the sealing between the sealing stop 203 and the fixed valve body 1, thus reducing the likelihood of leakage. A hexagonal nut 206 is threaded onto the end of the valve core body 201 away from the connecting stud 202 to limit the pressure block 207 and prevent it from falling off.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A piston mechanism with a one-way valve, characterized by, Include: The fixed valve body, the clamping groove is carved on the fixed valve body, the valve core support is clamped in the clamping groove; The valve core assembly is installed on the fixed valve body, the valve core assembly includes a valve core body, one end of the valve core body is fixed with a connecting stud, the connecting stud is threadedly connected with a closing race, the end of the valve core body away from the connecting stud is fixed with a pressing block, the pressing block is carved with a groove, the pressing block and the valve core support are fixedly connected with a pushing spring.

2. A piston mechanism with a one-way valve according to claim 1, characterized in that The first limiting groove is carved on the fixed valve body, the first O-shaped ring is arranged in the first limiting groove, and the first O-shaped ring is sleeved on the fixed valve body.

3. A piston mechanism with a one-way valve according to claim 1 or 2, characterized in that The fixed valve body is carved with a slope near the closing race.

4. A piston mechanism with a one-way valve according to claim 3, characterized in that The valve core support is fixed with a valve core sleeve, and the valve core body is arranged through the valve core sleeve.

5. A piston mechanism with a one-way valve according to any one of claims 1, 2, 4, characterized in that, The second limiting groove is carved on the closing race, the second O-shaped ring is arranged in the second limiting groove, and the second O-shaped ring is sleeved on the closing race.

6. A piston mechanism with a one-way valve according to claim 3, characterized in that The second limiting groove is carved on the closing race, the second O-shaped ring is arranged in the second limiting groove, and the second O-shaped ring is sleeved on the closing race.

7. A piston mechanism with a one-way valve according to any one of claims 1, 2, 4, 6, characterized in that, The hexagonal nut is threadedly connected with the end of the valve core body away from the connecting stud.

8. A piston mechanism with a one-way valve according to claim 3, characterized in that The hexagonal nut is threadedly connected with the end of the valve core body away from the connecting stud.

9. A piston mechanism with a one-way valve according to claim 5, characterized in that, The hexagonal nut is threadedly connected with the end of the valve core body away from the connecting stud.

10. A piston mechanism with a one-way valve according to claim 1, characterized in that The end of the valve core body near the connecting stud is widened.

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