Pneumatic antibiotic stop valve
By adopting spring and piston mechanisms and multi-layer sealing structures in the pneumatic antibiotic shut-off valve, the problem of slow sealing fit speed and poor sealing when the valve is closed is solved, rapid closing and high sealing are achieved, and the normal operation of the valve is ensured. and media cleansing.
Patent Information
- Application Number
- CN202421164358.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When the existing pneumatic antibiotic shutoff valve is closed, the sealing speed of the valve core and the sealing seat is slow, which affects the accuracy of flow regulation and is poorly sealed, resulting in difficult media residues and difficult to clean, affecting the normal operation of the valve.
A pneumatic antibiotic shutoff valve is designed, which uses spring and piston mechanism to achieve rapid closing. Combined with multi-layer sealing structure and buffering components, it ensures rapid opening and closing of the valve and high sealing, including valve body, flow chamber, valve stem, sealing seat , outflow channel, air pump, piston, guide rod, connecting rod, seal ring and buffer components, control the movement of the valve disc through the air pump to cut off and reconnect between the flow chamber and the outflow channel.
It realizes rapid closing and opening of the valve, improves sealing, prevents media leakage, ensures high sealing effect in the valve body, extends service life, and simplifies the cleaning process.
Smart Images
Figure CN222351457U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a pneumatic antibiotic stop valve. Background Art
[0002] A stop valve is a valve whose opening and closing part (valve disc) moves along the center line of the sealing seat, and the valve disc moves in a straight line along the center line of the sealing seat. Since the valve stem of this type of valve has a relatively short opening or closing stroke and has a very reliable cut-off function, and since the change in the sealing seat opening is directly proportional to the stroke of the valve disc, it is very suitable for regulating flow.
[0003] Antibiotic stop valves are mainly used in the fields of biological fermentation, medicine, etc., mainly using antibiotics as the medium. In order to avoid residual antibiotic media and cause product contamination, all parts that can contact the antibiotic media need to be cleaned and disinfected frequently.
[0004] When the existing pneumatic antibiotic stop valve is closed, the reaction speed of the valve core and the sealing seat is mostly slow, which affects the accuracy of flow regulation when the valve is opened and closed. The sealing between the valve core and the sealing seat is poor. When leakage occurs, the residual medium will be difficult to clean, thus affecting the normal operation of the valve. Utility Model Content
[0005] The utility model aims at providing a pneumatic antibiotic stop valve to solve the problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a pneumatic antibiotic stop valve, comprising a valve body, an inlet pipe and an outlet pipe are respectively arranged on both sides of the valve body, a flow cavity is arranged inside the valve body, a valve stem is arranged in the flow cavity, a valve disc is arranged at the bottom of the valve stem, a fixing groove is arranged at the top of the flow cavity, a spring is sleeved on the valve stem, the upper end of the spring is fixedly connected to the fixing groove, and the lower end is fixedly connected to the valve disc, a sealing seat that can abut and seal with the valve disc is arranged at the bottom of the flow cavity, the flow cavity is communicated with the inlet pipe body, and also includes an outflow channel arranged downwardly inclined, the upper end of the outflow channel is communicated with the flow cavity, and the lower end is communicated with the outlet channel, the valve body is provided with a connected cavity above the flow cavity, a groove with an opening facing upward is arranged on one side of the cavity, a piston is arranged in the groove, a guide rod is connected above the piston, the top of the valve stem extends into the cavity and is provided with a connecting rod, and the connecting rod is connected to the guide rod; it also includes an air pump, and the output pipe of the air pump is communicated with the bottom of the groove.
[0007] By adopting the above technical scheme, when the valve body is flowing, the medium enters the circulation cavity from the inlet pipe, and then flows out after entering the outlet pipe through the outflow channel. When the valve needs to be closed, the air pump pumps air, the piston moves downward, and the spring elastically recovers and immediately resets, pushing the valve disc downward, so that the valve disc cooperates with the sealing seat to cut off the circulation cavity and the outflow channel, thereby realizing the rapid closure of the valve body. At this time, the valve disc is subjected to downward pressure from the spring and the gravity of the medium, thereby firmly pressing the sealing seat to achieve a better sealing effect. When the valve needs to be opened, the gas is inflated, and the gas enters the groove to push the piston upward, thereby causing the guide rod to move. The displacement of the guide rod drives the valve stem upward through the connecting rod, thereby causing the valve disc to move upward, so that the circulation cavity and the outflow channel are reconnected.
[0008] As a further optimization of the utility model, a first sealing flap is provided at the upper end of the valve flap, the lower end of the spring is fixedly connected to the first sealing flap, a first sealing groove is opened on the lower side wall of the fixed groove, the first sealing groove and the fixed groove are stepped, and the top of the first sealing flap can abut against the first sealing groove for sealing cooperation.
[0009] With the above technical solution, when the valve body is flowing, the valve stem drives the valve disc to move upward, so that the first sealing part abuts against the first sealing groove, thereby isolating the cavity from the flow cavity, further enhancing the sealing inside the valve body and preventing leakage.
[0010] As a further optimization of the utility model, the upper side wall of the valve stem is provided with a second sealing flap, the lower side wall of the cavity is provided with a second sealing groove, and the bottom of the second sealing flap can abut against the second sealing groove for sealing cooperation.
[0011] By adopting the above technical solution, when the valve body is closed, the valve stem moves downward, thereby driving the second sealing flap to move downward. After the second sealing flap moves downward, it abuts against the second sealing groove, thereby isolating the cavity from the flow cavity, further enhancing the sealing inside the valve body and preventing leakage.
[0012] As a further optimization of the utility model, a side wall of the piston is provided with an annular groove, and an annular sealing ring is fixed in the annular groove.
[0013] By adopting the above technical solution, the sealing ring is provided to enhance the sealing effect of the piston on the groove and the cavity partition, further improve the sealing performance, and ensure the stability of the air pump operation.
[0014] As a further optimization of the present invention, the top wall of the cavity is provided with a plurality of buffer parts.
[0015] By adopting the above technical solution, during the process of opening and closing the valve, the buffer part can buffer the valve stem, connecting rod and guide rod, reduce the impact force between them and the top wall of the cavity, and extend the service life.
[0016] The beneficial effects of the utility model are as follows: when the valve body is flowing, the medium enters the circulation cavity from the inlet pipe, and then flows out after entering the outlet pipe through the outflow channel. When the valve needs to be closed, the air pump draws air, the piston moves downward, and the spring elastically recovers and immediately resets, pushing the valve disc downward, so that the valve disc cooperates with the sealing seat to cut off the circulation cavity and the outflow channel, thereby achieving rapid closure of the valve body. At this time, the valve disc is subjected to downward pressure from the spring and the gravity of the medium, thereby firmly pressing the sealing seat to achieve a better sealing effect. When the valve needs to be opened, the gas is inflated, and the gas enters the groove to push the piston upward, thereby causing the guide rod to move. The displacement of the guide rod drives the valve stem upward through the connecting rod, thereby causing the valve disc to move upward, so that the circulation cavity and the outflow channel are reconnected. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;
[0019] Figure 3 for Figure 1 An enlarged schematic diagram of .
[0020] The meaning of the numbers in the figure are as follows: 1. valve body; 10. cavity; 101. groove; 11. inlet pipe; 12. outlet pipe; 13. valve stem; 14. valve disc; 2. flow chamber; 21. sealing seat; 22. fixed groove; 3. outflow channel; 4. piston; 40. sealing ring; 41. guide rod; 42. connecting rod; 5. spring; 6. air pump; 71. first sealing disc; 72. first sealing groove; 81. second sealing disc; 82. second sealing groove; 9. buffer part. DETAILED DESCRIPTION
[0021] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
[0022] See attached Figure 1-3The embodiment disclosed in the utility model is further provided with: a pneumatic antibiotic stop valve, comprising a valve body 1, with an inlet pipe 11 and an outlet pipe 12 respectively arranged on both sides of the valve body 1, a flow chamber 2 arranged inside the valve body 1, a valve stem 13 arranged in the flow chamber 2, a valve flap 14 arranged at the bottom of the valve stem 13, a fixing groove 22 arranged at the top of the flow chamber 2, a spring 5 sleeved on the valve stem 13, the upper end of the spring 5 is fixedly connected to the fixing groove 22, and the lower end is fixedly connected to the valve flap 14, a sealing seat 21 capable of abutting and sealingly cooperating with the valve flap 14 is arranged at the bottom of the flow chamber 2, the flow chamber 2 is connected with the inlet pipe body, and also includes an outlet pipe 28 arranged downwardly inclined. Channel 3, the upper end of the outflow channel 3 is connected with the circulation chamber 2, and the lower end is connected with the outlet channel. The valve body 1 is provided with a communicating cavity 10 above the circulation chamber 2, and a groove 101 with an opening facing upward is provided on one side of the cavity 10. A piston 4 is provided in the groove 101. Furthermore, an annular groove is provided on the side wall of the piston 4, and an annular sealing ring 40 is fixed in the annular groove. The sealing ring 40 is slidably abutted against the inner wall of the groove 101. A guide rod 41 is connected to the top of the piston 4, and the top of the valve stem 13 extends into the cavity 10 and is provided with a connecting rod 42, which is connected to the guide rod 41; it also includes an air pump 6, and the output pipe of the air pump 6 is connected to the bottom of the groove 101.
[0023] Furthermore, a first sealing flap 71 is provided at the upper end of the valve flap 14, and the lower end of the spring 5 is fixedly connected to the first sealing flap 71. A first sealing groove 72 is provided on the lower side wall of the fixed groove 22. The first sealing groove 72 and the fixed groove 22 are stepped, and the top of the first sealing flap 71 can abut against the first sealing groove 72 for sealing cooperation.
[0024] Furthermore, a second sealing flap 81 is provided on the upper side wall of the valve stem 13, and a second sealing groove 82 is provided on the lower side wall of the cavity 10. The bottom of the second sealing flap 81 can abut against the second sealing groove 82 to form a sealing fit.
[0025] Furthermore, the top wall of the cavity 10 is provided with a plurality of buffer parts 9. During the process of opening and closing the valve, the buffer parts 9 can buffer the valve stem 13, the connecting rod 42 and the guide rod 41, thereby reducing the impact force between them and the top wall of the cavity and extending the service life.
[0026] The principle of the utility model is as follows: when the valve body 1 is flowing, the medium enters the flow cavity 2 from the inlet pipe 11, and then flows out through the outflow channel 3 into the outlet pipe 12, and the valve stem 13 and the valve disc 14 are in an upward state, so that the first sealing part abuts against the first sealing groove 72, thereby isolating the cavity 10 from the flow cavity 2, further enhancing the sealing performance in the valve body 1 to prevent leakage;
[0027] When the valve needs to be closed, the air pump 6 pumps air, the piston 4 moves downward, and the spring 5 elastically recovers and immediately resets, pushing the valve flap 14 downward, so that the valve flap 14 cooperates with the sealing seat 21 to cut off the flow cavity 2 and the outflow channel 3, thereby realizing the rapid closure of the valve body 1. At this time, the valve flap 14 is subjected to downward pressure by the spring 5 and the gravity of the medium, thereby firmly pressing the sealing seat 21 to achieve a better sealing effect. At the same time, the second sealing flap 81 moves downward, and after the second sealing flap 81 moves downward, it abuts against the second sealing groove 82, thereby isolating the cavity 10 from the flow cavity 2, further enhancing the sealing performance in the valve body 1 to prevent leakage;
[0028] When the valve needs to be opened, gas is inflated, and the gas enters the groove 101 to push the piston 4 upward, thereby causing the guide rod 41 to move. The displacement of the guide rod 41 drives the valve stem 13 upward through the connecting rod 42, thereby causing the valve flap 14 to move upward, so that the flow chamber 2 and the outflow channel 3 are reconnected.
[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.
Claims
1. A pneumatic antibiotic stop valve, comprising a valve body (1), characterized in that: An inlet pipe (11) and an outlet pipe (12) are respectively provided on both sides of the valve body (1); a circulation chamber (2) is provided inside the valve body (1); a valve stem (13) is provided inside the circulation chamber (2); a valve flap (14) is provided at the bottom of the valve stem (13); a fixing groove (22) is provided at the top of the circulation chamber (2); a spring (5) is sleeved on the valve stem (13); the upper end of the spring (5) is fixedly connected to the fixing groove (22) and the lower end is fixedly connected to the valve flap (14); a sealing seat (21) capable of mutually abutting and sealingly cooperating with the valve flap (14) is provided at the bottom of the circulation chamber (2); the circulation chamber (2) is communicated with the inlet pipe body, and further comprises An outflow channel (3) is arranged to be inclined downward, the upper end of the outflow channel (3) is connected to the circulation chamber (2), and the lower end is connected to the outlet channel, the valve body (1) is provided with a communicating cavity (10) above the circulation chamber (2), one side of the cavity (10) is provided with a groove (101) opening upward, a piston (4) is provided in the groove (101), the upper part of the piston (4) is connected to a guide rod (41), the top of the valve stem (13) extends into the cavity (10) and is provided with a connecting rod (42), the connecting rod (42) is connected to the guide rod (41); and an air pump (6) is also included, the output pipe of the air pump (6) is connected to the bottom of the groove (101).
2. A pneumatic antibiotic stop valve according to claim 1, characterized in that: A first sealing flap (71) is provided at the upper end of the valve flap (14), the lower end of the spring (5) is fixedly connected to the first sealing flap (71), a first sealing groove (72) is provided on the lower side wall of the fixed groove (22), the first sealing groove (72) and the fixed groove (22) are stepped, and the top of the first sealing flap (71) can abut against the first sealing groove (72) for sealing cooperation.
3. The pneumatic antibiotic stop valve according to claim 1, characterized in that: The upper side wall of the valve stem (13) is provided with a second sealing flap (81), and the lower side wall of the cavity (10) is provided with a second sealing groove (82), and the bottom of the second sealing flap (81) can abut against and seal with the second sealing groove (82).
4. The pneumatic antibiotic stop valve according to claim 1, characterized in that: The side wall of the piston (4) is provided with an annular groove, and an annular sealing ring (40) is fixed in the annular groove.
5. The pneumatic antibiotic stop valve according to claim 1, characterized in that: The top wall of the cavity (10) is provided with a plurality of buffer portions (9).