Sterile stop valve

Abstract

The utility model discloses a sterile stop valve which comprises an air cylinder, a support, a valve cover and a valve body, the air cylinder, the valve body, a valve element, the valve cover, the support, a sealing diaphragm, a sealing ferrule, a pull rod and a hoop can form a pneumatic sterile stop valve, and a piston rod and a first spring are arranged in the air cylinder. After compressed air is connected into the air source connector, the compressed air pushes the piston rod to move upwards, the piston rod drives the valve element to move upwards, the valve element is separated from the sealing face of the valve body to open the valve, and meanwhile the valve element pulls the sealing diaphragm to deform and protrude upwards. And when the valve is closed, the sealing diaphragm is concave downwards. Media in the valve cavity only make contact with the sealing diaphragm, the lower portion of the valve element and the inner cavity of the valve body, as the sealing diaphragm is tightly sealed with the valve body and the valve element all the time, when the valve is opened and closed, external microorganisms or bacteria cannot enter the valve cavity, the media in a whole pipeline system are effectively prevented from being polluted, and the quality of the whole finished product in the valve cavity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sanitary valves, in particular to an aseptic stop valve. Background Art

[0002] The stop valve is a common pipeline valve, and its main function is to control or cut off the flow of fluid. It is often used in branches or ends of pipeline systems to control or cut off the transfer of fluids in the pipeline system, especially in dairy filling, biological fermentation, and pipeline systems with high requirements for microorganisms. It plays an important role and is mainly used in food, beverage, dairy, beer, pharmaceutical and other pipelines.

[0003] The existing stop valve is mainly composed of a valve body, a valve core, a valve cover, a bracket and a cylinder. The valve body is provided with an inlet and an outlet for the fluid medium, the inlet and the outlet are respectively connected to the pipeline system, and the fluid medium flows in from the inlet of the valve body and flows out from the outlet.

[0004] The valve stem connected to the cylinder on the valve core of the existing stop valve is exposed to the outside atmosphere. When the valve is opened, the valve core is lifted upward, and some microorganisms and bacteria are attached to the surface of the valve stem exposed to the outside. When the valve is closed, the valve core moves downward, and the exposed valve stem enters the valve cavity, and the microorganisms attached to the surface of the valve stem are brought into the valve cavity. If the medium in the pipeline system does not allow microorganisms and bacteria, it will contaminate the medium in the entire pipeline system. For example, when yogurt is fermented, it will affect the quality of the entire finished product, which is urgently needed to be developed. Utility Model Content

[0005] The purpose of the utility model is to provide a sterile stop valve to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aseptic stop valve, comprising a cylinder, a bracket, a valve cover and a valve body, wherein the cylinder, the valve body, the valve core, the valve cover, the bracket, a sealing diaphragm, a sealing ring, a pull rod and a clamp can form a pneumatic aseptic stop valve, a piston rod and a spring 1 are arranged in the cylinder, the spring 1 is pre-tightened on the upper part of the piston rod, the cylinder and the bracket are fixed by screws, the other end of the bracket is connected to the valve cover and fixed by a clamp, the other end of the valve cover is connected to the valve body and fixed by a clamp, sealing diaphragms are symmetrically arranged between the valve cover and the valve body, a valve core is arranged between the two sealing diaphragms, and a pull rod is sleeved on the valve core.

[0007] Preferably, the connection between the valve cover and the pull rod is provided with an O-ring and a bushing, and the connection between the bottom of the valve core and the valve body is provided with a sealing ring. The provision of the O-ring and the sealing ring can improve the sealing of the connection between the valve cover and the pull rod and between the valve core and the valve body, and improve the stability of the structure in use.

[0008] Preferably, both sides of the valve cover are connected with fixed joints.

[0009] Preferably, an exhaust plug is connected to the top of one side of the cylinder, and an air source connector is connected to the bottom of one side of the cylinder.

[0010] Preferably, one side of the valve body is connected to a medium inlet, and the bottom of the valve body is connected to a medium outlet.

[0011] Preferably, an assembly frame is provided in the medium inlet, and a filter diaphragm is connected in the assembly frame. The filter diaphragm is provided to filter the medium entering and passing through, thereby reducing the accumulation of impurities adhering to the valve cavity and the surface of the sealing diaphragm and the valve core, and avoiding the probability of bacterial growth;

[0012] The outer side of the medium inlet is symmetrically connected with a positioning groove, and the connection between the assembly frame and the positioning groove is symmetrically fixed with a connecting rod, which extends to the top and bottom of the medium inlet and is connected with a connecting block.

[0013] Preferably, a fixing block is fixed on the top and bottom surfaces of the medium inlet, and a limit block is connected to the fixing block through a second spring. Then, through the arrangement and coordinated use of the second spring, the fixing block, the limit block, the pressing rod, the connecting block and the card block, the plugging state of the card block and the card slot can be adjusted to control the separation of the connecting rod and the positioning slot, so as to facilitate the detachment of the filter membrane for replacement;

[0014] The limit block extends into the connecting block, the limit block placed in the fixed block is connected to a pressing rod, the pressing rod extends outside the fixed block, the limit block placed in the connecting block is connected to a card block, and the connecting block is connected to a card slot matching the card block.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) This type of aseptic stop valve, when the air source connector is connected to compressed air, the compressed air pushes the piston rod upward, the piston rod drives the valve core upward, the valve core separates from the valve body sealing surface to open the valve, and at the same time the valve core pulls the sealing diaphragm to deform and bulge upward. When the valve is closed, the sealing diaphragm is concave downward. The medium in the valve cavity only contacts the sealing diaphragm, the lower part of the valve core and the inner cavity of the valve body. Since the sealing diaphragm always maintains a tight seal with the valve body and the valve core, when the valve is opened and closed, external microorganisms or bacteria cannot enter the valve cavity, effectively avoiding contamination of the medium in the entire pipeline system and improving the quality of the entire finished product in the valve cavity;

[0017] (2) This type of aseptic stop valve, by setting up a filter diaphragm, can filter the medium entering and passing through, reduce the probability of impurities accumulating and adhering to the valve cavity and the surface of the sealing diaphragm and valve core, and avoid the probability of bacterial growth. By setting up and cooperating with the spring 2, the fixing block, the limit block, the pressing rod, the connecting block and the clamping block, the plug-in state of the clamping block and the clamping slot can be adjusted to control the separation of the connecting rod and the positioning slot, so as to facilitate the removal of the filter diaphragm for replacement;

[0018] (3) This type of aseptic stop valve can improve the sealing performance of the connection between the valve cover and the pull rod and between the valve core and the valve body by setting the O-ring and the sealing ring, thereby improving the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 3 For this utility model Figure 1 The enlarged structural diagram at B in the middle;

[0022] Figure 4 This is a side view structural diagram of the connection between the medium inlet and the filter diaphragm of the utility model;

[0023] Figure 5 This is a schematic diagram of the side cross-sectional structure of the connection between the O-ring, the tie rod and the valve cover of the utility model;

[0024] Figure 6 It is a schematic diagram of the side cross-sectional structure of the connection between the valve core and the sealing ring of the utility model.

[0025] In the figure: 1. cylinder; 2. spring 1; 3. piston rod; 4. screw; 5. bracket; 6. bushing; 7. clamp; 8. valve cover; 9. fixing joint; 10. O-ring; 11. pull rod; 12. sealing diaphragm; 13. valve core; 14. sealing ring; 15. valve body; 16. air source joint; 17. exhaust plug; 18. medium outlet; 19. medium inlet; 20. filter diaphragm; 21. assembly frame; 22. spring 2; 23. fixing block; 24. limiting block; 25. pressing rod; 26. connecting block; 27. clamping block; 28. positioning groove; 29. ​​connecting rod; 30. clamping groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 The utility model provides an embodiment: an aseptic stop valve, including a cylinder 1, a bracket 5, a valve cover 8 and a valve body 15. The cylinder 1, the valve body 15, the valve core 13, the valve cover 8, the bracket 5, the sealing diaphragm 12, the sealing ring 14, the pull rod 11 and the clamp 7 can form a pneumatic aseptic stop valve. A piston rod 3 and a spring 2 are arranged in the cylinder 1. The spring 2 is pre-tightened on the upper part of the piston rod 3, and a certain force is transmitted to the valve core 13 connected thereto through the piston rod 3;

[0028] The cylinder 1 and the bracket 5 are locked and fixed by screws 4, the other end of the bracket 5 is connected to the valve cover 8 and locked and fixed by the clamp 7, the other end of the valve cover 8 is connected to the valve body 15 and locked and fixed by the clamp 7, and a sealing diaphragm 12 is symmetrically arranged between the valve cover 8 and the valve body 15, a valve core 13 is arranged between the two sealing diaphragms 12, and a pull rod 11 is sleeved on the valve core 13.

[0029] The connection between the valve cover 8 and the pull rod 11 is sleeved with an O-ring 10 and a bushing 6 .

[0030] A sealing ring 14 is sleeved on the connection between the bottom of the valve core 13 and the valve body 15 .

[0031] Both sides of the valve cover 8 are connected with fixed joints 9 .

[0032] An exhaust plug 17 is connected to the top of one side of the cylinder 1 , and an air source connector 16 is connected to the bottom of one side of the cylinder 1 .

[0033] A medium inlet 19 is connected to one side of the valve body 15 , and a medium outlet 18 is connected to the bottom of the valve body 15 .

[0034] An assembly frame 21 is provided in the medium inlet 19, and a filter membrane 20 is connected in the assembly frame 21 to filter the medium passing therethrough;

[0035] A positioning groove 28 is symmetrically connected to the outer side of the medium inlet 19. The positioning groove 28 can provide a mounting point for the connecting rod 29 to avoid hindering the assembly connection function of the medium inlet 19.

[0036] Connecting rods 29 are symmetrically fixed at the connection between the assembly frame 21 and the positioning groove 28 . The connecting rods 29 extend to the top and bottom of the medium inlet 19 and are connected to the connecting blocks 26 .

[0037] The top and bottom surfaces of the medium inlet 19 are fixed with a fixing block 23, and the fixing block 23 is connected to the limiting block 24 through the spring 22. The expansion of the spring 22 keeps the clamping block 27 in a fastened state with the clamping slot 30;

[0038] The limit block 24 extends into the connecting block 26 , and a pressing rod 25 is connected to the limit block 24 placed in the fixed block 23 . The pressing rod 25 extends outside the fixed block 23 , and a clamping block 27 is connected to the limit block 24 placed in the connecting block 26 . A clamping slot 30 matching the clamping block 27 is connected in the connecting block 26 .

[0039] When the embodiment of the present application is in use: after the air source connector 16 is connected to compressed air, the compressed air pushes the piston rod 3 to move upward, the piston rod 3 drives the valve core 13 to move upward, the valve core 13 separates from the sealing surface of the valve body 15 to open the valve, and at the same time the valve core 13 pulls the sealing diaphragm 12 to deform it and bulge upward. When the valve is closed, the sealing diaphragm 12 is concave downward. The medium in the valve cavity is only in contact with the sealing diaphragm 12, the lower part of the valve core 13 and the inner cavity of the valve body 15. Since the sealing diaphragm 12 always maintains a tight seal with the valve body 15 and the valve core 13, when the valve is opened and closed, external microorganisms or bacteria cannot enter the valve cavity, effectively avoiding contamination of the medium in the entire pipeline system and improving the quality of the entire finished product in the valve cavity.

Claims

1. A sterile stop valve, characterized in that: The invention comprises a cylinder (1), a bracket (5), a valve cover (8) and a valve body (15), wherein the cylinder (1), the valve body (15), the valve core (13), the valve cover (8), the bracket (5), the sealing diaphragm (12), the sealing ring (14), the pull rod (11) and the clamp (7) can form a pneumatic sterile stop valve, wherein a piston rod (3) and a spring (2) are provided in the cylinder (1), and the spring (2) is pre-tightened on the upper part of the piston rod (3). (1) is locked and fixed with the bracket (5) by the screw (4), the other end of the bracket (5) is connected to the valve cover (8) and is locked and fixed by the clamp (7), the other end of the valve cover (8) is connected to the valve body (15) and is locked and fixed by the clamp (7), a sealing diaphragm (12) is symmetrically provided between the valve cover (8) and the valve body (15), a valve core (13) is provided between the two sealing diaphragms (12), and a pull rod (11) is provided on the valve core (13).

2. The aseptic stop valve according to claim 1, characterized in that: The connection between the valve cover (8) and the pull rod (11) is provided with an O-type sealing ring (10) and a bushing (6).

3. The aseptic stop valve according to claim 1, characterized in that: A sealing ring (14) is provided at the connection between the bottom of the valve core (13) and the valve body (15).

4. The aseptic stop valve according to claim 2, characterized in that: Both sides of the valve cover (8) are connected with fixed joints (9).

5. The aseptic stop valve according to claim 1, characterized in that: An exhaust plug (17) is connected to the top of one side of the cylinder (1), and an air source connector (16) is connected to the bottom of one side of the cylinder (1).

6. The aseptic stop valve according to claim 3, characterized in that: A medium inlet (19) is connected to one side of the valve body (15), and a medium outlet (18) is connected to the bottom of the valve body (15).

7. The aseptic stop valve according to claim 6, characterized in that: An assembly frame (21) is provided in the medium inlet (19), a filter membrane (20) is connected to the assembly frame (21), a positioning groove (28) is symmetrically connected to the outside of the medium inlet (19), and connecting rods (29) are symmetrically fixed at the connection between the assembly frame (21) and the positioning groove (28), and the connecting rods (29) extend to the top and bottom of the medium inlet (19) and are connected to the connecting blocks (26).

8. The aseptic stop valve according to claim 7, characterized in that: A fixed block (23) is fixed to the top and bottom surfaces of the medium inlet (19); a limit block (24) is connected to the fixed block (23) via a second spring (22); the limit block (24) extends into the connecting block (26); a pressing rod (25) is connected to the limit block (24) disposed in the fixed block (23); the pressing rod (25) extends outside the fixed block (23); a clamping block (27) is connected to the limit block (24) disposed in the connecting block (26); and a clamping slot (30) matching the clamping block (27) is connected to the connecting block (26).

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