CN216382592U

CN216382592U - Sterile stop valve

Info

Publication number: CN216382592U
Application number: CN202123076626.5U
Authority: CN
Inventors: 张善群; 李亮; 张善云
Original assignee: Zhejiang Suqi Technology Co ltd
Current assignee: Zhejiang Suqi Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-26
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses an aseptic stop valve which comprises a valve body, a diaphragm, an installation support arranged on the valve body, a valve core positioned in the valve body, a connecting shaft and an actuating mechanism arranged on the installation support, wherein the inner ring of the diaphragm is positioned between the connecting shaft and the valve core, the outer ring of the diaphragm is positioned between the valve body and the installation support, the valve body and the installation support are connected through a clamp and used for pressing the sealing diaphragm, the connecting shaft is in threaded connection with the valve core and used for pressing the sealing diaphragm, a sealing support is arranged above the valve body, an inner cavity is formed between the sealing support and the diaphragm, the connecting shaft penetrates through the sealing support and is connected with the actuating mechanism, a limiting block moving along with the connecting shaft is arranged in the inner cavity, and a cushion pad is arranged between the limiting block and the sealing support. The utility model has the following advantages and effects: the utility model has the advantages of simple structure, convenient assembly, low cost and long service life.

Description

Sterile stop valve

Technical Field

The utility model relates to a valve, in particular to an aseptic stop valve.

Background

The shut-off valve is a positive seal type valve, so when the valve is closed, pressure must be applied to the valve flap to force the sealing surface from leaking. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur.

The existing stop valve can be provided with a diaphragm structure, contact between a medium and a valve component is reduced through the diaphragm structure, secondary pollution is avoided, and a sterile effect is achieved. But the diaphragm structure of current needs to set up the additional mounting structure who carries out sealed installation to it, and the existence of mounting structure has further increased the complexity of valve structure and the work load of assembly, very big promotion the manufacturing cost of valve. In addition, when the pressure in front of the valve is too high, the valve core in motion is easily collided with the valve body under the action of pressure in the opening process of the stop valve, so that the service life of the valve is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an aseptic stop valve which is simple in structure, convenient to assemble, low in cost and long in service life.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides an aseptic stop valve, includes valve body, diaphragm, sets up in the installing support of valve body, is located case, connecting axle in the valve body and installs the actuating mechanism in the installing support, the inner circle of diaphragm is located between connecting axle and the case, and the outer lane is located between valve body and the installing support, be used for compressing tightly sealed diaphragm through the clamp connection between valve body and the installing support, the connecting axle is used for compressing tightly sealed diaphragm with case threaded connection, is located the valve body top is equipped with sealed support, form an inner chamber between sealed support and the diaphragm, the connecting axle passes sealed support and is connected with actuating mechanism, the intracavity is equipped with the stopper along with the connecting axle motion, be equipped with the blotter between stopper and the sealed support.

Through adopting above-mentioned technical scheme, the equipment between the two has been realized through threaded connection's mode to connecting axle and case, and in the equipment process, drives these two pressure and hold the diaphragm under threaded connection's effect to this realizes the sealed installation of diaphragm inner circle in step. The valve body and the mounting support are quickly mounted through the hoop, and the valve body and the mounting support are driven to press and hold the diaphragm under the action of the hoop, so that the sealing mounting of the outer ring of the diaphragm is synchronously realized. The diaphragm mounting structure has the advantages that the diaphragm is mounted without the need of arranging a redundant mounting structure for sealing and mounting the diaphragm, so that the overall structure of the valve is simpler, the assembly is convenient, and the cost is lower. When the valve is in the opening process, the connecting shaft drives the limiting block to move towards the sealing support, the limiting block moving towards the sealing support is buffered through the buffering cushion arranged between the sealing support and the limiting block, the limiting block is prevented from being impacted on the sealing support, and therefore the service life of the valve is prolonged.

Further setting the following steps: the diaphragm comprises a supporting diaphragm and a tetrafluoro diaphragm, a protruding part protruding outwards is formed on the side face of the tetrafluoro diaphragm, and a groove part for embedding the protruding part is arranged on the valve core corresponding to the protruding part.

Through adopting above-mentioned technical scheme, the existence of supporting the diaphragm plays the support reinforcing action to the tetrafluoro diaphragm, promotes the structural strength and the leakproofness of tetrafluoro diaphragm. Better limiting effect is played to the tetrafluoro diaphragm through the cooperation between bulge and the recess portion, prevents that the tetrafluoro diaphragm from dislocation phenomenon to this guarantees sealing stability.

Further setting the following steps: a gasket is arranged between the valve body and the PTFE membrane, the cross section of the gasket is L-shaped, and a concave part which is used for embedding and is matched with the PTFE membrane is arranged at the position of the PTFE membrane corresponding to the gasket.

Through adopting above-mentioned technical scheme, the packing ring cooperation depressed part carries out better support to the tetrafluoro diaphragm to increase the sealing area between the two, reach better sealed effect with this.

Further setting the following steps: the installation groove is formed in the limiting block and used for installing the cushion pad, and the position of the installation groove close to the opening of the installation groove is reduced in diameter to form a limiting section for limiting the cushion pad to be separated from the installation groove.

Through adopting above-mentioned technical scheme, the better restriction blotter of existence of spacing section is spacing in the mounting groove, promotes the installation stability of blotter.

Further setting the following steps: the leakage detection device comprises an air passage formed in a sealing support or a mounting support and used for communicating an inner cavity with the outside, wherein a leakage detection pipe is connected to the air passage, and the free end of the leakage detection pipe is bent downwards.

Through adopting above-mentioned technical scheme, with the lower extreme immersion water of leak hunting pipe, if there is the bubble production to indicate that the diaphragm takes place to leak when the valve at the in-process of doing not, can play the warning effect to carry out timely maintenance or change to the valve.

Further setting the following steps: the pressure plate is arranged on the valve core, a sealing gasket matched with the valve body to form sealing is arranged between the pressure plate and the valve core, a fastening bolt used for locking the pressure plate is connected to the valve core, and a polytetrafluoroethylene gasket is arranged between the fastening bolt and the pressure plate.

Through adopting above-mentioned technical scheme, sealed the existence of filling up promotes the sealed effect of valve, guarantees the leakproofness between this fixed knot constructs through the tetrafluoro pad that sets up, guarantees sealed stability.

Further setting the following steps: a first self-lubricating sleeve is arranged between the sealing support and the connecting shaft.

Through adopting above-mentioned technical scheme, the setting of first self-lubricating cover promotes the lubricity of connecting axle, reduces frictional resistance.

Further setting the following steps: actuating mechanism is including setting up in the cylinder body of installing support, setting up piston in the cylinder body, the telescopic link along with the piston motion and the spring of drive piston motion, the telescopic link passes the installing support and is connected with the connecting axle, form a fit clearance between installing support and the telescopic link, be equipped with the second in the fit clearance and from moist cover, the top that lies in the second in the fit clearance is equipped with shaft seal, a side that the shaft seal was equipped with the inflation groove towards the second is from moist cover.

By adopting the technical scheme, the lubricating property of the telescopic rod is improved by the existence of the second self-lubricating sleeve; external pressure gets into the inflation groove through the fit clearance, and the drive shaft through the inflation groove is better seals to realize balanced sealed to this promotes the sealed effect of shaft.

Further setting the following steps: a plurality of convex sealing bulges are arranged on one side surface of the shaft seal facing the telescopic rod.

Through adopting above-mentioned technical scheme, a plurality of sealed bellied settings form multichannel sealed to this reaches better sealed effect.

In conclusion, the utility model has the following beneficial effects: the utility model has the advantages of simple structure, convenient assembly, low cost and long service life.

Drawings

FIG. 1 is a sectional view of the embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a sectional view of the embodiment in another direction.

In the figure: 1. a valve body; 2. mounting a bracket; 3. a valve core; 4. an actuator; 41. a cylinder body; 42. a piston; 43. a telescopic rod; 44. a spring; 5. a connecting shaft; 6. sealing the bracket; 7. an inner cavity; 8. a cushion pad; 9. supporting the membrane; 10. a tetrafluoro membrane; 11. a projection; 12. a groove part; 13. a gasket; 14. a recessed portion; 15. mounting grooves; 16. a limiting section; 17. an airway; 18. a leakage detecting pipe; 19. pressing a plate; 20. a gasket; 21. fastening a bolt; 22. a tetrafluoro pad; 23. a first self-lubricating sleeve; 24. fitting gaps; 25. a second self-lubricating sleeve; 26. shaft sealing; 27. an expansion tank; 28. sealing the protrusion; 29. and a limiting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, the sterile stop valve comprises a valve body 1, a diaphragm, a mounting bracket 2 arranged on the valve body 1, a valve core 3 positioned in the valve body 1, a connecting shaft 5 and an actuating mechanism 4 arranged on the mounting bracket 2. The inner ring of the diaphragm is positioned between the connecting shaft 5 and the valve core 3, the outer ring of the diaphragm is positioned between the valve body 1 and the mounting support 2, the valve body 1 and the mounting support 2 are connected through a clamping hoop and used for pressing the sealing diaphragm, and the connecting shaft 5 and the valve core 3 are connected through threads and used for pressing the sealing diaphragm. And a sealing support 6 is arranged above the valve body 1, and the sealing support 6 is fixed between the mounting support 2 and the diaphragm. An inner cavity 7 is formed between the sealing support 6 and the diaphragm, an air passage 17 communicating the inner cavity 7 with the outside is formed in the sealing support 6, a leakage detecting pipe 18 is fixedly connected to the air passage 17, and the free end of the leakage detecting pipe 18 is arranged downwards in a bending mode.

The connecting shaft 5 passes through the sealing support 6 to be connected with the actuating mechanism 4, and a first self-lubricating sleeve 23 is arranged between the sealing support 6 and the connecting shaft 5. Be equipped with the stopper 29 along with the motion of connecting axle 5 in the inner chamber 7, stopper 29 is fixed to be set up in connecting axle 5, and stopper 29 has seted up mounting groove 15 towards the up end of seal support 6, and mounting groove 15 is close to its open-ended position throat setting and forms a spacing section 16, is equipped with protrusion in mounting groove 15 open-ended blotter 8 in the mounting groove 15.

The diaphragm comprises a supporting diaphragm 9 and a tetrafluoro diaphragm 10 positioned below the supporting diaphragm 9, a convex part 11 which protrudes outwards is formed on the lower side surface of the tetrafluoro diaphragm 10, and a groove part 12 which is used for embedding the convex part 11 is formed in the position, corresponding to the convex part 11, on the valve core 3. A gasket 13 is arranged between the valve body 1 and the PTFE membrane 10, the cross section of the gasket 13 is L-shaped, and a concave part 14 which is embedded and matched with the PTFE membrane 10 is arranged at the position of the PTFE membrane 10 corresponding to the gasket 13. The valve core 3 is provided with a pressure plate 19, a sealing gasket 20 which is matched with the valve body 1 to form sealing is arranged between the pressure plate 19 and the valve core 3, the valve core 3 is connected with a fastening bolt 21 for locking the pressure plate 19, and a PTFE gasket 22 is arranged between the fastening bolt 21 and the pressure plate 19.

The actuator 4 includes a cylinder 41 fixedly disposed on the mounting bracket 2, a piston 42 disposed in the cylinder 41, an expansion rod 43 moving with the piston 42, and a spring 44 driving the piston 42 to move, wherein the piston 42 and the expansion rod 43 are integrally connected. The telescopic rod 43 passes through the mounting bracket 2 to be connected with the connecting shaft 5. A fit clearance 24 is formed between the mounting bracket 2 and the telescopic rod 43, a second self-lubricating sleeve 25 is arranged in the fit clearance 24, a shaft seal 26 is arranged above the second self-lubricating sleeve 25 in the fit clearance 24, and an expansion groove 27 is formed in one side surface of the shaft seal 26 facing the second self-lubricating sleeve 25. The side of the shaft seal 26 facing the extension rod 43 is provided with a plurality of protruding sealing protrusions 28.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides an aseptic stop valve, includes valve body (1), diaphragm, sets up in installing support (2) of valve body (1), is located case (3) of valve body (1), connecting axle (5) and installs in actuating mechanism (4) of installing support (2), its characterized in that: the inner circle of diaphragm is located between connecting axle (5) and case (3), and the outer lane is located between valve body (1) and installing support (2), be used for compressing tightly sealed diaphragm through the clamp connection between valve body (1) and installing support (2), connecting axle (5) and case (3) threaded connection are used for compressing tightly sealed diaphragm, are located valve body (1) top is equipped with sealing support (6), form an inner chamber (7) between sealing support (6) and the diaphragm, connecting axle (5) pass sealing support (6) and are connected with actuating mechanism (4), be equipped with stopper (29) along with connecting axle (5) motion in inner chamber (7), be equipped with blotter (8) between stopper (29) and sealing support (6).

2. The sterile shut-off valve of claim 1, wherein: the diaphragm comprises a supporting diaphragm (9) and a tetrafluoro diaphragm (10), a protruding part (11) protruding outwards is formed on the side surface of the tetrafluoro diaphragm (10), and a groove part (12) for embedding the protruding part (11) is arranged on the valve core (3) corresponding to the protruding part (11).

3. The sterile shut-off valve of claim 2, wherein: a gasket (13) is arranged between the valve body (1) and the tetrafluoro membrane (10), the cross section of the gasket (13) is L-shaped, and a concave part (14) which is used for embedding and is matched with the tetrafluoro membrane (10) is arranged at the position of the tetrafluoro membrane (10) corresponding to the gasket (13).

4. The sterile shut-off valve of claim 1, wherein: the installation structure comprises an installation groove (15) formed in the limiting block (29) and used for installing the cushion pad (8), wherein the installation groove (15) is provided with a limiting section (16) close to the opening position of the installation groove (15) and used for limiting the cushion pad (8) to be separated from the installation groove (15).

5. The sterile shut-off valve of claim 1, wherein: the leakage detection device is characterized by comprising an air passage (17) formed in a sealing support (6) or a mounting support (2) and used for communicating an inner cavity (7) with the outside, wherein a leakage detection pipe (18) is connected to the air passage (17), and the free end of the leakage detection pipe (18) is bent downwards.

6. The sterile shut-off valve of claim 1, wherein: the pressure plate (19) is arranged on the valve core (3), a sealing gasket (20) matched with the valve body (1) to form a seal is arranged between the pressure plate (19) and the valve core (3), a fastening bolt (21) used for locking the pressure plate (19) is connected to the valve core (3), and a polytetrafluoroethylene gasket (22) is arranged between the fastening bolt (21) and the pressure plate (19).

7. The sterile shut-off valve of claim 1, wherein: a first self-lubricating sleeve (23) is arranged between the sealing support (6) and the connecting shaft (5).

8. The sterile shut-off valve of claim 1, wherein: actuating mechanism (4) including set up in cylinder body (41) of installing support (2), set up piston (42) in cylinder body (41), telescopic link (43) and the spring (44) of drive piston (42) motion along with piston (42) motion, telescopic link (43) are passed installing support (2) and are connected with connecting axle (5), form a fit clearance (24) between installing support (2) and telescopic link (43), it is equipped with second self-lubricating cover (25) in fit clearance (24), it is equipped with shaft seal (26) to lie in the top of second self-lubricating cover (25) in fit clearance (24), shaft seal (26) are equipped with expansion groove (27) towards a side of second self-lubricating cover (25).

9. The sterile shut-off valve of claim 8, wherein: the side of the shaft seal (26) facing the telescopic rod (43) is provided with a plurality of convex sealing bulges (28).