An automatic gas-controlled valve

Abstract

The utility model relates to the technical field of air-controlled diaphragm valves, and specifically discloses an automatic air-controlled valve, comprising: a valve body, the valve body comprising an upper cylinder body and a lower cylinder body, the upper cylinder body and the lower cylinder body are connected by bolts, and the lower cylinder body comprises an air inlet, an air outlet and a connecting end; an elastic mechanism, the elastic mechanism comprises a piston, a dick spring and an adjusting rod, the piston is arranged in the connecting end, the dick spring is arranged in the upper cylinder body, and the adjusting rod is hollow; a functional mechanism, the functional mechanism comprises a central rod, a pressure block, a diaphragm, a valve core and a valve flap, the central rod abuts against the adjusting rod, a first air hole is arranged in the middle of the central rod, the central rod is connected to the pressure block, the pressure block abuts against the diaphragm, the pressure block is threadedly connected to the valve core, the valve core is connected to the valve flap, and the valve flap is arranged adjacent to the air outlet; the utility model overcomes the defects of the prior art that the manual opening and closing of the diaphragm valve is complicated to operate and the opening size of the diaphragm valve cannot be controlled, and the diaphragm valve has insufficient air tightness.

Description

Technical Field

[0001] The utility model relates to the field of air-controlled diaphragm valves, in particular to an automatic air-controlled valve. Background Art

[0002] The pneumatically controlled diaphragm valve is an important gas control device, which is widely used in various industrial and medical fields. Its main features are simple structure, good sealing, corrosion resistance and wear resistance, which make the pneumatically controlled diaphragm valve widely used in gas and fluid control systems.

[0003] The pneumatically controlled diaphragm valve controls the on / off of gas / fluid by the movement of the diaphragm. As an efficient and reliable fluid control device, it plays an important role in many industries.

[0004] In the prior art, the air-controlled diaphragm valve is usually opened / closed by manually turning a hand wheel. It is difficult to control the opening size of the air-controlled diaphragm valve only by manually opening and closing the air-controlled diaphragm valve, and the operation is complicated. At the same time, the air-controlled diaphragm valve in the prior art has insufficient air tightness and is prone to gas leakage. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The problem to be solved by the utility model is to provide an automatic air-controlled valve to overcome the defects of the prior art that the manual opening and closing of the air-controlled diaphragm valve is complicated to operate and the opening size cannot be controlled, and the air-controlled diaphragm valve has insufficient air tightness.

[0007] (II) Technical solution

[0008] In order to solve the technical problem, the utility model provides an automatic gas-controlled valve, comprising:

[0009] A valve body, the valve body comprising an upper cylinder body and a lower cylinder body, the upper cylinder body and the lower cylinder body are connected by bolts, the lower cylinder body comprises an air inlet, an air outlet and a connecting end, the air inlet is located at the lower side of the valve body, the connecting end is located at the upper side of the valve body, and the air outlet is located at one side of the valve body;

[0010] An elastic mechanism, the elastic mechanism comprising a piston, a shaped spring and an adjusting rod, the piston being arranged in the connecting end, the shaped spring being arranged in the upper cylinder body, the adjusting rod being hollow, the adjusting rod being arranged in the upper cylinder body, the piston being connected to the shaped spring through a spring lower washer, and the piston abutting against the adjusting rod;

[0011] The functional mechanism includes a center rod, a pressure block, a diaphragm, a valve core and a valve flap, the center rod abuts against the adjusting rod, a first air hole is provided in the middle of the center rod, the center rod is connected to the pressure block, the pressure block abuts against the diaphragm, the pressure block is threadedly connected to the valve core, the valve core is connected to the valve flap, and the valve flap is arranged adjacent to the air outlet.

[0012] As for the air-controlled valve mentioned above, optionally, there are three pistons, each of which is in contact with each other, and there is a gap between any two of the pistons, and each of the gaps is connected to the first air hole through the second air hole.

[0013] As the air-controlled valve mentioned above, optionally, the air-controlled valve includes a sealing mechanism, and the sealing mechanism includes a first sealing ring and a second sealing ring, the first sealing ring is arranged between each of the pistons and the center rod, and the second sealing ring is arranged between the adjusting rod and the upper cylinder body.

[0014] As the air-controlled valve mentioned above, optionally, the air-controlled valve includes a control mechanism, the control mechanism includes a PLC, an air valve and an air pump, the PLC is connected to the air valve, the air pump is connected to the air valve, and the air valve is connected to the first air hole.

[0015] As for the air-controlled valve mentioned above, optionally, the piston abuts against the center rod through a piston gasket.

[0016] As for the air-controlled valve mentioned above, optionally, the center rod, the pressure block, the valve core, the valve disc and the regulating rod are coaxially arranged.

[0017] (III) Beneficial effects

[0018] The utility model provides an automatic air-controlled valve, which has the following beneficial effects:

[0019] (1) In the utility model, when the air-controlled valve is opened, the PLC transmits an opening command to the air valve, the air valve is opened, the air pump inflates the first air hole, and the air flows from the first air hole through the second air hole to enter the gap. As the air flow continues to be filled, the air pressure in the gap increases, and the air pressure can drive the piston to lift. The diaphragm spring is squeezed as the piston is lifted, and the adjustment rod is lifted upward at the same time. Since the adjustment rod is in contact with the center rod, the center rod is lifted accordingly, and the pressure block drives the valve core and the valve disc to lift upward. At the same time, the diaphragm also returns to its original shape, and the air inlet is opened. Opening the air-controlled valve by PLC and pneumatic control method greatly increases the degree of automation of valve opening and closing, and the automatic opening / closing of the air-controlled valve can significantly improve the corresponding speed of opening and closing and accurately control the size of the air inlet opening.

[0020] (2) In the present invention, when the air control valve is closed, the PLC transmits a closing command to the air valve, the air valve is closed, the air pump stops inflating the first air hole, and the dipper spring, under the action of the reaction force, presses the piston downward, so that the center rod moves downward, the valve core and the valve disc seal the air inlet, and the air inlet is closed. The air inlet is closed by the reaction force of the dipper spring, which greatly improves the convenience of closing the air control valve. At the same time, the dipper spring can continue to provide a downward reaction force, so that the valve core further presses the air inlet, improves the air tightness of the valve core and the valve disc, and ensures that air cannot enter from the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a cross-sectional view of an automatic gas-controlled valve of the utility model;

[0023] Figure 2 It is a partial cross-sectional view of an automatic gas-controlled valve of the utility model;

[0024] Figure 3 It is a partial cross-sectional view from another angle of an automatic air-controlled valve of the utility model.

[0025] The names of the components corresponding to the various figure marks in the figure are: 1. valve body; 11. upper cylinder body; 12. lower cylinder body; 13. bolt; 14. air inlet; 15. air outlet; 16. connecting end; 2. elastic mechanism; 21. piston; 22. dick spring; 23. adjusting rod; 24. spring lower gasket; 25. piston gasket; 3. functional mechanism; 31. center rod; 32. pressure block; 33. diaphragm; 34. valve core; 35. valve disc; 36. first air hole; 37. gap; 38. second air hole; 4. sealing mechanism; 41. first sealing ring; 42. second sealing ring; 5. control mechanism; 51. PLC; 52. air valve; 53. air pump. DETAILED DESCRIPTION

[0026] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0028] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0029] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0031] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0032] See also Figures 1 to 3 The utility model provides an automatic gas-controlled valve, comprising a valve body 1, an elastic mechanism 2, a functional mechanism 3, a sealing mechanism and a control mechanism. The elastic mechanism 2, the functional mechanism 3 and the sealing mechanism are all located in the valve body 1, and the control mechanism is connected to the functional mechanism 3.

[0033] exist Figures 1 to 3In an optional embodiment, the valve body 1 includes an upper cylinder body 11 and a lower cylinder body 12, the upper cylinder body 11 and the lower cylinder body 12 are connected by bolts 13, the lower cylinder body 12 includes an air inlet 14, an air outlet 15 and a connecting end 16, the air inlet 14 is located on the lower side of the valve body 1, the connecting end 16 is located on the upper side of the valve body 1, and the air outlet 15 is located on one side of the valve body 1, and the air flow can enter from the air inlet 14 and flow out from the air outlet 15.

[0034] exist Figures 1 to 3 In an optional embodiment, the elastic mechanism 2 includes a piston 21, a squeak spring 22 and an adjusting rod 23, the piston 21 is disposed in the connecting end 16, the squeak spring 22 is disposed in the upper cylinder body 11, and the piston 21 abuts against the squeak spring 22 through a spring lower washer 24. The squeak spring 22 can provide a downward reaction force to compress the piston 21.

[0035] At the same time, the adjusting rod 23 is hollow in shape, connected to the upper cylinder body 11 , and coaxial with the upper cylinder body 11 , and the piston 21 abuts against the adjusting rod 23 . When the piston 21 rises upward, the adjusting rod 23 can be moved upward driven by the piston 21 .

[0036] It should be noted that the piston 21 and the spring 22 are both annular, there are three pistons 21 , each piston 21 abuts against each other, and there is a gap 37 between any two pistons 21 .

[0037] exist Figures 1 to 3 In an optional embodiment, the functional mechanism 3 includes a central rod 31, a pressing block 32, a diaphragm 33, a valve core 34 and a valve flap 35. The central rod 31 is in contact with the adjusting rod 23, so the lifting of the adjusting rod 23 can drive the central rod 31 to be lifted. A first air hole 36 is provided in the middle of the central rod 31, and a second air hole 38 is provided on one side of the adjacent interval of the central rod 31. The first air hole 36 is connected with the second air hole 38, and the gas can flow in from the first air hole 36 and be input into the gap 37 through the second air hole 38. At the same time, the pressing block 32 is threadedly connected with the valve core 34, the valve core 34 and the valve flap 35 are arranged adjacent to the gas outlet 15, the valve core 34 and the valve flap 35 are connected, the valve flap 35 is in contact with the gas outlet 15, and the valve flap 35 can seal the gas outlet 15 to ensure the air tightness of the gas at the gas outlet 15.

[0038] It should be noted that as the gas pressure increases, the piston 21 is driven by the high-pressure gas to move upward, causing the cam spring 22 to compress, and at the same time, causing the adjustment rod 23 to move upward, and the adjustment rod 23 then drives the center rod 31 to lift upward. Because the center rod 31 is connected to the pressure block 32, the connection method can be but is not limited to a snap connection. As the center rod 31 is lifted, the pressure block 32 is lifted accordingly. It should be supplemented that the air control valve also includes a pressure ring, which is connected to the pressure block 32, the pressure ring and the pressure block 32 are coaxial, and the pressure block 32 is in contact with the diaphragm 33.

[0039] exist Figures 1 to 3 In an optional embodiment, the air-controlled valve includes a sealing mechanism 4 , which includes a first sealing ring 41 and a second sealing ring 42 , wherein the first sealing ring 41 is disposed between each piston 21 and the center rod 31 , and the second sealing ring 42 is disposed between the adjusting rod 23 and the upper cylinder body 11 .

[0040] Meanwhile, sealing rings are also arranged between the center rod 31 and the lower cylinder 12, and between the pressing block 32 and the lower cylinder 12. The sealing mechanism 4 can isolate gas / lubricating oil from leaking and ensure air tightness. The air control valve also has a piston gasket 21, and the piston 21 abuts against the center rod 31 through the piston gasket 21.

[0041] Further, the air-controlled valve includes a control mechanism 5, which includes a PLC 51, an air valve 52, and an air pump 53. The PLC 51 is connected to the air valve 52, and the air pump 53 is connected to the air valve 52. The air valve 52 is connected to the first air hole 36. The PLC 51 can control the opening and closing of the air valve 52, and the air pump 53 can inflate the first air hole 36.

[0042] Furthermore, the center rod 31 , the pressure block 32 , the valve core 34 , the valve flap 35 and the regulating rod 23 are coaxially arranged.

[0043] The utility model provides an automatic gas-controlled valve, and the specific steps are as follows:

[0044] When the air control valve is opened, PLC51 transmits an opening instruction to the air valve 52, the air valve 52 is opened, and the air pump 53 inflates the first air hole 36. The airflow enters the second air hole 38 from the first air hole 36, and then enters the gap 37. As the airflow continues to be filled, the air pressure in the gap 37 increases, and the air pressure can drive the piston 21 to lift. The diaphragm spring 22 is squeezed as the piston 21 is lifted, and the adjustment rod 23 is lifted upward. Since the adjustment rod 23 is in contact with the center rod 31, the center rod 31 is lifted accordingly, and the pressure block 32 drives the valve core 34 and the valve disc 35 to lift upward. At the same time, the diaphragm 33 also returns to its original state, and the air inlet 14 is opened. Opening the air control valve through PLC51 and the pneumatic control method greatly increases the degree of automation of the valve opening and closing, and the automatic opening / closing of the air control valve can improve the corresponding speed of opening and closing and accurately control the size of the opening of the air inlet 14.

[0045] When the air control valve is closed, the PLC 51 transmits a closing command to the air valve 52, the air valve 52 is closed, the air pump 53 stops inflating the first air hole 36, and the diaphragm spring 22 presses the piston 21 downward under the action of the reaction force, so that the center rod 31 moves downward, the valve core 34 and the valve flap 35 seal the air inlet 14, and the air inlet 14 is closed. The air inlet 14 is sealed by the reaction force of the diaphragm spring 22, which greatly improves the convenience of closing the air control valve. At the same time, the diaphragm spring 22 can continue to provide a downward reaction force, so that the valve core 34 further presses the air inlet 14, improves the air tightness of the valve core 34 and the valve flap 35, and ensures that the air flow cannot enter from the air inlet 14.

[0046] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0047] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An automatic gas-controlled valve, characterized in that: include: A valve body (1), the valve body (1) comprising an upper cylinder body (11) and a lower cylinder body (12), the upper cylinder body (11) and the lower cylinder body (12) being connected by bolts (13), the lower cylinder body (12) comprising an air inlet (14), an air outlet (15) and a connecting end (16), the air inlet (14) being located at the lower side of the valve body (1), the connecting end (16) being located at the upper side of the valve body (1), and the air outlet (15) being located at one side of the valve body (1); An elastic mechanism (2), the elastic mechanism (2) comprising a piston (21), a spring (22) and an adjusting rod (23), the piston (21) being arranged in the connecting end (16), the spring (22) being arranged in the upper cylinder body (11), the adjusting rod (23) being hollow, the adjusting rod (23) being arranged in the upper cylinder body (11), the piston (21) being connected to the spring (22) via a spring lower washer (24), and the piston (21) being in contact with the adjusting rod (23); A functional mechanism (3), the functional mechanism (3) comprising a center rod (31), a pressure block (32), a diaphragm (33), a valve core (34) and a valve flap (35), the center rod (31) abutting against the adjusting rod (23), a first air hole (36) being provided in the middle of the center rod (31), the center rod (31) being connected to the pressure block (32), the pressure block (32) abutting against the diaphragm (33), the pressure block (32) being threadedly connected to the valve core (34), the valve core (34) being connected to the valve flap (35), and the valve flap (35) being provided adjacent to the air outlet (15).

2. The air-controlled valve according to claim 1, characterized in that: The pistons (21) have a plurality of pistons (21), each of which abuts against each other, and a gap (37) is provided between any two of the pistons (21), and each of the gaps is connected to the first air hole (36) via a second air hole (38).

3. The air-controlled valve according to claim 2, characterized in that: The air-controlled valve comprises a sealing mechanism (4), wherein the sealing mechanism (4) comprises a first sealing ring (41) and a second sealing ring (42), wherein the first sealing ring (41) is arranged between each of the pistons (21) and the center rod (31), and the second sealing ring (42) is arranged between the adjusting rod (23) and the upper cylinder body (11).

4. The air-controlled valve according to claim 1, characterized in that: The air-controlled valve comprises a control mechanism (5), wherein the control mechanism (5) comprises a PLC (51), an air valve (52) and an air pump (53), wherein the PLC (51) is connected to the air valve (52), the air pump (53) is connected to the air valve (52), and the air valve (52) is connected to the first air hole (36).

5. The air-controlled valve according to claim 1, characterized in that: The piston (21) abuts against the center rod (31) via a piston gasket (25).

6. The gas-controlled valve according to claim 1, characterized in that: The central rod (31), the pressing block (32), the valve core (34), the valve flap (35) and the regulating rod (23) are coaxially arranged.

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