Pneumatic adjustable valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a pneumatic adjustable valve which comprises a three-way valve body, a first valve element, a second valve element and a third valve element. The sealing mechanism comprises a sealing seat, the sealing seat is arranged in the second cavity and close to the third cavity, and the sealing seat is provided with a through hole; the driving mechanism comprises a double-shaft air cylinder, an adjusting assembly and a sealing assembly, the double-shaft air cylinder is arranged in the first cavity, the double-shaft air cylinder is provided with a first output end and a second output end which are arranged back to back, the adjusting assembly is adjustably connected with the double-shaft air cylinder, and the adjusting assembly abuts against the first output end of the double-shaft air cylinder; the sealing assembly is connected with the second output end of the double-shaft air cylinder and used for controlling opening and closing of the through hole. According to the pneumatic adjustable valve, the valve is controlled to be switched off or switched on through the double-shaft air cylinder, the withdrawing stroke of the double-shaft air cylinder can be controlled by adjusting the adjusting assembly, and therefore the flow of a medium is controlled, and semi-automatic control over the valve is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a pneumatic adjustable valve. BACKGROUND

[0002] The pneumatic valve is an important device for the automation of industrial pipeline systems. It is installed with a pneumatic actuator on the basis of a common valve, and driven by the pressure of a gas source to work. The opening and closing of the valve are controlled by the pneumatic actuator, and the pneumatic valve has the functions of flow guiding, cutting off and throttling. In the related art, the existing pneumatic valve needs a pneumatic actuator, and its structure is relatively complex and the cost is relatively high. In addition, it is inconvenient to maintain, and has the problems of high mechanical failure rate and poor sealing performance.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0004] In view of at least one of the above technical problems, the present application provides a pneumatic adjustable valve, which solves the problems of complex structure, high cost and inconvenient maintenance of the existing pneumatic valve.

[0005] The present application provides a pneumatic adjustable valve, comprising:

[0006] The three-way valve body has a first cavity, a second cavity and a third cavity;

[0007] The sealing mechanism comprises a sealing seat, which is arranged in the second cavity and close to the third cavity, and has a through hole;

[0008] The driving mechanism comprises a double-shaft air cylinder, an adjusting assembly and a closing assembly. The double-shaft air cylinder is arranged in the first cavity and has a first output end and a second output end arranged in opposite directions. The adjusting assembly is adjustably connected with the double-shaft air cylinder, and the adjusting assembly abuts against the first output end of the double-shaft air cylinder. The closing assembly is connected with the second output end of the double-shaft air cylinder, and is used to control the opening and closing of the through hole.

[0009] One of the technical solutions has at least one of the following advantages or beneficial effects: the pneumatic adjustable valve controls the cutting or connection of the valve through the double-shaft air cylinder, and controls the retraction stroke of the double-shaft air cylinder by adjusting the adjusting assembly, so as to control the flow size of the medium and realize the semi-automatic control of the valve.

[0010] In some possible implementation manners, the movement direction of the first output end of the double-shaft air cylinder is the same as the movement direction of the second output end of the double-shaft air cylinder.

[0011] In some possible implementations, the driving mechanism further includes a mounting assembly, the mounting assembly is arranged in the first cavity, and the dual-shaft air cylinder and the adjusting assembly are located in the mounting assembly.

[0012] In some possible implementations, the mounting assembly includes a fixed plate and a pipe body, both of which are arranged in the first cavity, the pipe body abuts against the fixed plate, and a pipe cap is sleeved at one end of the pipe body away from the fixed plate, and the dual-shaft air cylinder is connected to the fixed plate.

[0013] In some possible implementations, the adjusting assembly includes a mounting plate, a limiting plate and a screw rod, the mounting plate is connected to the dual-shaft air cylinder, one end of the screw rod is connected to the mounting plate, the limiting plate is adjustably sleeved at the other end of the screw rod, and the limiting plate abuts against the first output end of the dual-shaft air cylinder.

[0014] In some possible implementations, the sealing assembly includes a connecting shaft and a valve core seat, the connecting shaft is connected to the second output end of the dual-shaft air cylinder, the connecting shaft is located at one side of the third cavity, and the valve core seat is connected to the connecting shaft.

[0015] The application will be further described below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0017] Figure 1 The internal structure diagram of the pneumatic adjustable valve shown in the embodiments of the present application;

[0018] In the drawings: 100, three-way valve body; 110, first cavity; 120, second cavity; 130, third cavity;

[0019] 200, sealing mechanism; 210, sealing seat; 220, through hole;

[0020] 300, driving mechanism; 310, dual-shaft air cylinder; 320, adjusting assembly; 330, sealing assembly; 340, mounting assembly;

[0021] 321, mounting plate; 322, limiting plate; 323, screw rod;

[0022] 331, connecting shaft; 332, valve core seat;

[0023] 341, fixed plate; 342, pipe body; 343, pipe cap; DETAILED DESCRIPTION

[0024] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways beyond the specific embodiments described and claimed herein. It is therefore intended that the present application not be limited in scope to the specific embodiments disclosed but rather that the scope of the present application be measured by the broadest permissible interpretation of the claims.

[0025] As shown in Figure 1 , the embodiment provides a pneumatic adjustable valve, comprising a three-way valve body 100, a sealing mechanism 200 and a driving mechanism 300.

[0026] The three-way valve body 100 has a first cavity 110, a second cavity 120 and a third cavity 130; the sealing mechanism 200 comprises a sealing seat 210, the sealing seat 210 is arranged in the second cavity 120 and close to the third cavity 130, the sealing seat 210 has a through hole 220; the driving mechanism 300 comprises a double-shaft air cylinder 310, an adjusting assembly 320 and a closing assembly 330, the double-shaft air cylinder 310 is arranged in the first cavity 110, the double-shaft air cylinder 310 has a first output end and a second output end arranged in opposite directions, the adjusting assembly 320 is adjustably connected with the double-shaft air cylinder 310, the adjusting assembly 320 abuts against the first output end of the double-shaft air cylinder 310, and the closing assembly 330 is connected with the second output end of the double-shaft air cylinder 310, the closing assembly 330 is used for controlling the opening and closing of the through hole 220.

[0027] The pneumatic adjustable valve in the embodiment controls the cut-off or connection of the valve through the double-shaft air cylinder 310, and also controls the retraction stroke of the double-shaft air cylinder 310 by adjusting the adjusting assembly 320, so as to control the flow size of the medium and realize the semi-automatic control of the valve.

[0028] In some embodiments, as shown in Figure 1 , the movement direction of the first output end of the double-shaft air cylinder 310 is the same as the movement direction of the second output end of the double-shaft air cylinder 310.

[0029] The two output ends of the double-shaft air cylinder 310 can move synchronously. In some embodiments, when the first output end of the double-shaft air cylinder 310 moves towards the adjusting assembly 320, the second output end of the double-shaft air cylinder 310 moves away from the sealing mechanism 200. When the first output end of the double-shaft air cylinder 310 moves away from the adjusting assembly 320, the second output end of the double-shaft air cylinder 310 moves towards the sealing mechanism 200.

[0030] In some embodiments, as shown in Figure 1As shown, the drive mechanism 300 also includes a mounting assembly 340, which is disposed in the first cavity 110, and the dual-axis cylinder 310 and the adjustment assembly 320 are located in the mounting assembly 340.

[0031] Mounting assembly 340 provides mounting space for the twin-shaft cylinder 310 and the adjusting assembly 320, and prevents direct contact with the medium. In some embodiments, mounting assembly 340 is inserted into the first cavity 110.

[0032] In some embodiments, such as Figure 1 As shown, the mounting assembly 340 includes: a fixing plate 341, a tube body 342, and a tube cap 343. The fixing plate 341 and the tube body 342 are both located in the first cavity 110. The tube body 342 abuts against the fixing plate 341, and the tube cap 343 is fitted onto the end of the tube body 342 away from the fixing plate 341. The dual-shaft cylinder 310 is connected to the fixing plate 341.

[0033] The fixing plate 341 is adapted to the shape of the first cavity 110. In some embodiments, the fixing plate 341 is inserted into the first cavity 110. A sealing ring is also provided on the outer edge of the fixing plate 341, which contacts the inner wall of the first cavity 110 to improve the sealing capability of the mounting assembly 340.

[0034] The fixing plate 341 is connected to the dual-axis cylinder 310. In some embodiments, the fixing plate 341 can be connected in a variety of ways, such as at least one of fixed connection, detachable connection, etc. Fixed connection may include welding. Detachable connection may include at least one of snap-fit, fastening, threaded connection, etc.

[0035] The tube body 342 is cylindrical and provides installation space for the biaxial cylinder 310 and the adjustment assembly 320. In some embodiments, the tube body 342 is inserted into the first cavity 110 and abuts against the fixing plate 341.

[0036] In some embodiments, such as Figure 1 As shown, the adjustment assembly 320 includes: a mounting plate 321, a limiting plate 322, and a screw 323. The mounting plate 321 is connected to the dual-axis cylinder 310. One end of the screw 323 is connected to the mounting plate 321. The limiting plate 322 is adjustablely fitted onto the other end of the screw 323. The limiting plate 322 abuts against the first output end of the dual-axis cylinder 310.

[0037] Mounting plate 321 is connected to dual-axis cylinder 310. In some embodiments, mounting plate 321 and dual-axis cylinder 310 can be connected by screws. A sealing ring is provided between mounting plate 321 and dual-axis cylinder 310.

[0038] The screw rods 323 are connected with the mounting plate 321 and the limiting plate 322 respectively. In some embodiments, the screw rods 323 can be detachably connected with the mounting plate 321 and the limiting plate 322 through a plurality of nuts. Specifically, each screw rod 323 is connected with the mounting plate 321 through two nuts, and each screw rod 323 is connected with the limiting plate 322 through two nuts, so that the position of the limiting plate 322 on the screw rod 323 can be adjusted, that is, the distance between the limiting plate 322 and the first output end can be adjusted, and then the retracting stroke of the double-shaft air cylinder 310 can be controlled, so that the flow size of the medium can be controlled.

[0039] The number of the screw rods is multiple. In some embodiments, the number of the screw rods is two.

[0040] In some embodiments, as shown in Figure 1 The closed assembly 330 includes a connecting shaft 331 and a valve core seat 332. The connecting shaft 331 is connected with the second output end of the double-shaft air cylinder 310, and the connecting shaft 331 is located on one side of the third cavity 130. The valve core seat 332 is connected with the connecting shaft 331.

[0041] The connecting shaft 331 is connected with the second output end of the double-shaft air cylinder 310. In some embodiments, the connecting shaft 331 and the second output end of the double-shaft air cylinder 310 can be connected in various ways. For example, at least one of fixed connection, detachable connection, etc. The fixed connection can include at least one of bonding, welding, integral molding, etc. The detachable connection can include at least one of clamping, buckling, threaded connection, etc.

[0042] The valve core seat 332 is connected with the connecting shaft 331. In some embodiments, the valve core seat 332 and the connecting shaft 331 can be connected through a screw. A sealing ring is arranged between the valve core seat 332 and the connecting shaft 331.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0044] In the description of the application, unless otherwise clearly specified and limited, a first feature "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not indicate the only implementation.

[0046] In the description of the application, it should be understood that the terms "first", "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application, or modify equivalent embodiments, without departing from the scope of the technical solutions of the present application, by using the methods and technical contents disclosed above. Therefore, any equivalent changes made according to the shape, structure and principle of the present application, without departing from the technical solutions of the present application, should be covered by the protection scope of the present application.

Claims

1. A pneumatically adjustable valve, characterized by The utility model relates to a three-way valve, comprising: a three-way valve body having a first cavity, a second cavity and a third cavity; a sealing mechanism including a sealing seat arranged in the second cavity and close to the third cavity, the sealing seat having a through hole; a driving mechanism including a double-shaft air cylinder, an adjusting assembly and a closing assembly, the double-shaft air cylinder being arranged in the first cavity and having a first output end and a second output end arranged oppositely, the adjusting assembly being adjustably connected with the double-shaft air cylinder and abutting against the first output end of the double-shaft air cylinder, and the closing assembly being connected with the second output end of the double-shaft air cylinder and used for controlling the opening and closing of the through hole.

2. The pneumatically adjustable valve of claim 1, wherein, The movement direction of the first output end of the double-shaft air cylinder is the same as that of the second output end of the double-shaft air cylinder.

3. The pneumatically adjustable valve of claim 1, wherein, The driving mechanism further includes a mounting assembly arranged in the first cavity and in which the double-shaft air cylinder and the adjusting assembly are located.

4. The pneumatically adjustable valve of claim 3, wherein, The mounting assembly includes a fixed plate and a tube body, both of which are arranged in the first cavity, the tube body abutting against the fixed plate, and a tube cap sleeved on one end of the tube body away from the fixed plate, and the double-shaft air cylinder is connected with the fixed plate.

5. The pneumatically adjustable valve of claim 1, wherein, The adjusting assembly includes a mounting plate, a limiting plate and a screw rod, the mounting plate being connected with the double-shaft air cylinder, one end of the screw rod being connected with the mounting plate, and the limiting plate being adjustably sleeved on the other end of the screw rod and abutting against the first output end of the double-shaft air cylinder.

6. The pneumatically adjustable valve of claim 1, wherein, The closing assembly includes a connecting shaft and a valve core seat, the connecting shaft being connected with the second output end of the double-shaft air cylinder and located on one side of the third cavity, and the valve core seat being connected with the connecting shaft.

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