An adjustable pneumatic angle seat valve

Abstract

The utility model discloses an adjustable pneumatic angle seat valve, include: valve body, be provided with the valve core in it, and the valve core fixedly connected with valve stem, actuating mechanism, fixedly set up on the valve body, with valve stem transmission connection, manual adjusting mechanism, fixedly set up at the top of actuating mechanism, and stretch into actuating mechanism and link to each other with valve stem, mode switching mechanism, fixedly set up in one side of manual adjusting mechanism, for switching between actuating mechanism drive valve stem and manual adjusting mechanism drive valve stem. The angle seat valve of the utility model can be switched to manual control mode, can be manually controlled opening and closing under the emergency, improved the reliability of angle seat valve, and can realize the fine adjustment of flow after switching to manual mode, and the adaptability is good.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an adjustable pneumatic angle seat valve. Background Technology

[0002] Angle seat valves are guided angle seat valves operated by a single-acting pneumatic actuator with spring safety protection. They are widely used for frequent short-duration starts, maintaining flow rate while saving space, and are characterized by rapid response and accurate action. When used in conjunction with a solenoid valve, pneumatic control can accurately control the flow rate of gas and liquids. They can also achieve precise temperature control and liquid dripping.

[0003] Angle seat valves are operated by pneumatic actuators. In the production process, if there is an unexpected interruption of air or power, it will affect the normal operation of the equipment. When it is necessary to control the flow of the medium, the angle seat valve cannot be fine-tuned, which affects its applicability. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an adjustable pneumatic angle seat valve that can be switched to manual control mode. In case of emergency, the valve can be manually controlled to open and close, which improves the reliability of the angle seat valve. Furthermore, the flow rate can be finely adjusted after switching to manual mode, making it highly adaptable.

[0005] This utility model provides an adjustable pneumatic angle seat valve, comprising: A valve body, in which a valve core is provided, and a valve stem is fixedly connected to the valve core; An actuator is fixedly mounted on the valve body and is connected to the valve stem via a transmission mechanism. A manual adjustment mechanism is fixedly installed on the top of the actuator and extends into the actuator to be connected to the valve stem; A mode switching mechanism is fixedly installed on one side of the manual adjustment mechanism and is used to switch between the actuator driving the valve stem and the manual adjustment mechanism driving the valve stem.

[0006] Furthermore, the actuator includes a cylinder fixedly mounted on the valve body, a piston disposed within the cylinder, a valve stem fixedly connected to the piston at one end away from the valve core, the piston dividing the cylinder into a lower chamber and an upper chamber, a spring disposed between the top of the upper chamber and the piston, and the cylinder having an air inlet communicating with the lower chamber and an air outlet communicating with the upper chamber.

[0007] Furthermore, a hand valve connected to the lower cavity is fixedly installed on the cylinder body, and a filter screen is installed at the inlet of the hand valve.

[0008] Furthermore, the manual adjustment mechanism includes a sleeve fixedly mounted on the top of the cylinder body, a pull rod disposed inside the sleeve, the bottom end of the pull rod extending into the upper cavity and rotatably connected to the top end of the valve stem, the top end of the pull rod extending out of the sleeve and fixedly connected to a first handle, a sealing ring disposed between the pull rod and the cylinder body, and a sliding sleeve threaded onto the pull rod inside the sleeve, the sliding sleeve being slidably connected to the sleeve.

[0009] Furthermore, the mode switching mechanism includes a pin, a first guide groove parallel to its axis is provided on one side of the sliding sleeve, and a second guide groove parallel to its axis is provided on the other side. A pin hole is provided in the first guide groove. A support sleeve is fixedly provided on the side wall of the sleeve. The pin is threadedly connected to the support sleeve. One end of the pin passes through the first guide groove and is inserted into the pin hole with clearance fit. The other end is fixedly connected to a second handle. A guide block that slides with the second guide groove is fixedly provided on the inner wall of the sleeve.

[0010] Furthermore, a limiting groove is provided at one end of the support sleeve near the sliding sleeve, and a limiting ring that is fitted with the limiting groove is fixedly sleeved on the pin.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The angle seat valve of this utility model is equipped with a manual adjustment mechanism and a mode switching mechanism. The manual adjustment mechanism does not affect the normal operation of the actuator. When there is a gas or power outage, the angle seat valve is switched to manual mode through the mode switching mechanism. At this time, the opening and closing of the angle seat valve can be controlled in an emergency through the manual adjustment mechanism, which improves the reliability of the angle seat valve. In addition, when it is necessary to fine adjust the flow rate of the medium, it can also be switched to manual mode, which improves the adaptability of the angle seat valve.

[0012] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of an adjustable pneumatic angle seat valve; Figure 2 This is a structural diagram of the manual adjustment mechanism and the mode switching mechanism.

[0014] The diagram labels are: 1. Valve body; 2. Actuator; 3. Manual adjustment mechanism; 4. Mode switching mechanism. 11. Valve core; 12. Valve stem; 21. Cylinder block; 22. Piston; 23. Lower chamber; 24. Upper chamber; 25. Spring; 26. Inlet; 27. Outlet; 28. Hand valve; 31. Sleeve; 32. Pull rod; 33. First handle; 34. Sealing ring; 35. Sliding sleeve; 36. First guide groove; 37. Second guide groove; 38. Pin hole; 39. Guide block; 41. Pin; 42. Support sleeve; 43. Second handle; 44. Limiting groove; 45. Limiting ring. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0016] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] Please refer to Figures 1-2 An embodiment of this utility model provides an adjustable pneumatic angle seat valve, comprising: Valve body 1, which contains valve core 11, and valve core 11 is fixedly connected to valve stem 12; Actuator 2 is fixedly mounted on valve body 1 and is connected to valve stem 12 in a transmission manner; The manual adjustment mechanism 3 is fixedly installed on the top of the actuator 2 and extends into the actuator 2 to be connected to the valve stem 12; The mode switching mechanism 4 is fixedly installed on one side of the manual adjustment mechanism 3 and is used to switch between the actuator 2 driving the valve stem 12 and the manual adjustment mechanism 3 driving the valve stem 12.

[0018] In this embodiment, when the angle seat valve is used in the pipeline, under normal circumstances, the manual adjustment mechanism 3 moves together with the valve stem 12 without affecting the actuator 2's drive of the valve stem 12; when there is a gas or power outage, the angle seat valve is switched to manual mode by the mode switching mechanism 4. At this time, the opening and closing of the angle seat valve can be controlled in an emergency by the manual adjustment mechanism 3, which reduces the impact on normal production and improves the reliability of the angle seat valve. In some operating conditions, when it is necessary to fine-tune the flow rate of the medium, after the actuator 2 is de-energized, the angle seat valve is switched to manual mode by the mode switching mechanism 4. The opening of the angle seat valve is controlled by the manual adjustment mechanism 3, so that the flow value displayed by the flow monitoring device on the pipeline meets the usage requirements, effectively improving the adaptability of the angle seat valve.

[0019] In a preferred embodiment, such as Figure 1 As shown, the actuator 2 includes a cylinder 21 fixedly mounted on the valve body 1. A piston 22 is disposed inside the cylinder 21. The end of the valve stem 12 away from the valve core 11 is fixedly connected to the piston 22. The piston 22 divides the cylinder 21 into a lower chamber 23 and an upper chamber 24. A spring 25 is disposed between the top of the upper chamber 24 and the piston 22. The cylinder 21 is provided with an air inlet 26 communicating with the lower chamber 23 and an air outlet 27 communicating with the upper chamber 24.

[0020] In this embodiment, the spring 25 compresses the piston 22, causing the valve core 11 to close the valve body 1. The air pump injects gas into the lower cavity 23, pushing the piston 22 upward. The piston 22 drives the valve core 11 upward through the valve rod 12, causing the valve body 1 to open, thus realizing the rapid opening and closing of the valve body 1.

[0021] In a preferred embodiment, such as Figure 1 As shown, a hand valve 28 connected to the lower cavity 23 is fixedly installed on the cylinder body 21, and a filter screen is installed at the inlet of the hand valve 28.

[0022] In this embodiment, when the angle seat valve is switched to manual mode by the mode switching mechanism 4, the hand valve 28 is opened, so that the manual adjustment mechanism 3 can smoothly drive the opening and closing of the angle seat valve, avoiding the air pressure in the lower cavity 23 from affecting it; the filter screen can prevent dust or debris from entering the lower cavity 23 through the hand valve 28.

[0023] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the manual adjustment mechanism 3 includes a sleeve 31 fixedly mounted on the top of the cylinder body 21. A pull rod 32 is provided inside the sleeve 31. The bottom end of the pull rod 32 extends into the upper cavity 24 and is rotatably connected to the top end of the valve stem 12. The top end of the pull rod 32 extends out of the sleeve 31 and is fixedly connected to a first handle 33. A sealing ring 34 is provided between the pull rod 32 and the cylinder body 21. A sliding sleeve 35 is threaded onto the pull rod 32 inside the sleeve 31, and the sliding sleeve 35 is slidably connected to the sleeve 31.

[0024] In this embodiment, in pneumatic mode, the pull rod 32 and the sliding sleeve 35 move together with the valve stem 12, and the manual adjustment mechanism 3 does not function. When the mode switching mechanism 4 locks the sliding sleeve 35, the angle seat valve is switched to manual mode. At this time, the pull rod 32 is rotated by the first handle 33, and with the threaded structure of the sliding sleeve 35, the valve stem 12 is moved by the pull rod 32, thereby realizing the manual control of the angle seat valve and adjusting the opening degree of the angle seat valve, which effectively improves the performance of the angle seat valve.

[0025] In a preferred embodiment, such as Figure 1 and Figure 2 As shown, the mode switching mechanism 4 includes a pin 41. A first guide groove 36 parallel to its axis is provided on one side of the sliding sleeve 35, and a second guide groove 37 parallel to its axis is provided on the other side. A pin hole 38 is provided in the first guide groove 36. A support sleeve 42 is fixedly provided on the side wall of the sleeve 31. The pin 41 is threadedly connected to the support sleeve 42. One end of the pin 41 passes through the first guide groove 36 with clearance fit and is inserted into the pin hole 38. The other end is fixedly connected to a second handle 43. A guide block 39 that slides with the second guide groove 37 is fixedly provided on the inner wall of the sleeve 31.

[0026] In this embodiment, the pin 41 is rotated by the second handle 43, and the pin 41 is inserted into or withdrawn from the pin hole 38 under the engagement of the threaded structure of the support sleeve 42. When the pin 41 withdraws from the pin hole 38, the angle seat valve is in pneumatic mode; when the pin 41 inserts into the pin hole 38, the sliding sleeve 35 is locked, and the angle seat valve is in manual mode. The mode switching mechanism 4 is easy to operate, realizes rapid mode switching, and improves the performance of the angle seat valve.

[0027] In a preferred embodiment, such as Figure 2 As shown, a limiting groove 44 is provided at one end of the support sleeve 42 near the sliding sleeve 35, and a limiting ring 45 that is fitted with the limiting groove 44 is fixedly sleeved on the pin 41.

[0028] In this embodiment, the maximum displacement of the pin 41 is limited by the cooperation of the limiting groove 44 and the limiting ring 45. When the limiting ring 45 is embedded in the limiting groove 44 and cannot move outward further, the pin 41 is completely withdrawn from the pin hole 38, and the end of the pin 41 is placed in the first guide groove 36. The first guide groove 36 guides the movement of the sliding sleeve 35, ensuring the stability of the movement of the sliding sleeve 35. Preferably, the outer diameter of the end of the pin 41 gradually decreases to form a guide head, ensuring that it can be accurately inserted into the pin hole 38.

[0029] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adjustable pneumatic angle seat valve, characterized in that, include: A valve body (1) is provided inside, and a valve core (11) is fixedly connected to a valve stem (12); The actuator (2) is fixedly mounted on the valve body (1) and is connected to the valve stem (12) in a transmission manner; The manual adjustment mechanism (3) is fixedly installed on the top of the actuator (2) and extends into the actuator (2) and is connected to the valve stem (12); The mode switching mechanism (4) is fixedly installed on one side of the manual adjustment mechanism (3) and is used to switch between the actuator (2) driving the valve stem (12) and the manual adjustment mechanism (3) driving the valve stem (12).

2. The adjustable pneumatic angle seat valve according to claim 1, characterized in that, The actuator (2) includes a cylinder (21) fixedly mounted on the valve body (1). A piston (22) is provided inside the cylinder (21). The end of the valve stem (12) away from the valve core (11) is fixedly connected to the piston (22). The piston (22) divides the cylinder (21) into a lower cavity (23) and an upper cavity (24). A spring (25) is provided between the top of the upper cavity (24) and the piston (22). The cylinder (21) is provided with an air inlet (26) communicating with the lower cavity (23) and an air outlet (27) communicating with the upper cavity (24).

3. The adjustable pneumatic angle seat valve according to claim 2, characterized in that, A hand valve (28) connected to the lower cavity (23) is fixedly installed on the cylinder (21), and a filter screen is provided at the inlet of the hand valve (28).

4. The adjustable pneumatic angle seat valve according to claim 3, characterized in that, The manual adjustment mechanism (3) includes a sleeve (31) fixedly installed on the top of the cylinder (21). A pull rod (32) is provided inside the sleeve (31). The bottom end of the pull rod (32) extends into the upper cavity (24) and is rotatably connected to the top end of the valve stem (12). The top end of the pull rod (32) extends out of the sleeve and is fixedly connected to a first handle (33). A sealing ring (34) is provided between the pull rod (32) and the cylinder (21). A sliding sleeve (35) is threaded onto the pull rod (32) inside the sleeve (31). The sliding sleeve (35) is slidably connected to the sleeve (31).

5. The adjustable pneumatic angle seat valve according to claim 4, characterized in that, The mode switching mechanism (4) includes a pin (41). The sliding sleeve (35) has a first guide groove (36) parallel to its axis on one side and a second guide groove (37) parallel to its axis on the other side. A pin hole (38) is provided in the first guide groove (36). A support sleeve (42) is fixedly provided on the side wall of the sleeve (31). The pin (41) is threadedly connected to the support sleeve (42). One end of the pin (41) passes through the first guide groove (36) with clearance fit and is inserted into the pin hole (38). The other end is fixedly connected to a second handle (43). A guide block (39) that slides with the second guide groove (37) is fixedly provided on the inner wall of the sleeve (31).

6. The adjustable pneumatic angle seat valve according to claim 5, characterized in that, A limiting groove (44) is provided at one end of the support sleeve (42) near the sliding sleeve (35), and a limiting ring (45) that is clearance-fitted with the limiting groove (44) is fixedly sleeved on the pin (41).

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