Pneumatic butterfly valve with flow adjusting structure

Abstract

The utility model discloses a pneumatic butterfly valve with a flow regulating structure, which belongs to the field of butterfly valves, and comprises a valve pipe and a regulating mechanism mounted in the valve pipe, the regulating mechanism comprises push plates mounted on two sides in a moving groove in a sliding manner and inclined side plates mounted on one sides of the push plates, and the pneumatic butterfly valve solves the problems of frequent power failure, high reliability and the like. In order to solve the problems that a pneumatic actuator cannot be used in a dangerous environment, the flow of a butterfly valve is difficult to adjust and the safety is low in the prior art, when the flow in the butterfly valve is adjusted, a motor controls a threaded rod to rotate in a moving groove and a rotating round block to rotate in an inverted-T-shaped rotating groove, and an inner threaded ring in threaded connection with the outer surface of the threaded rod moves downwards; in the downward moving process of the internal thread ring, the arranged pushing piece pushes the inclined side plates to move towards the two sides of the middle plate, the pushing plate moves towards the baffle and moves into the space among the baffle, the built-in plate and the middle plate, and when the internal thread ring is located at the lower end of the inclined side plates, the pushing plate blocks the flow in the butterfly valve.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valves, and more specifically to a pneumatic butterfly valve with a flow regulating structure. Background Art

[0002] The pneumatic butterfly valve is composed of a pneumatic actuator and a butterfly valve. The pneumatic butterfly valve is a pneumatic valve that uses a circular butterfly plate that rotates with the valve stem to open and close to achieve the activation action. It is mainly used as a shut-off valve, and can also be designed to have the function of regulation or section valve and regulation. In the document with publication number CN219588124U, an adjustable flow pneumatic butterfly valve is proposed. The side push rod pushes the mounting plate to move the baffle away from the through hole closed area to achieve small flow regulation. When the pneumatic actuator is used to rotate the butterfly valve disc and change its angle to achieve flow regulation, in order to ensure its stability after adjustment. During use, the above-mentioned butterfly valve uses a pneumatic actuator to rotate the butterfly valve disc. However, in actual use, power outages often occur. In dangerous environments, the pneumatic actuator cannot be used, and it is difficult to adjust the flow of the butterfly valve, and the safety is low. Utility Model Content

[0003] The purpose of the utility model is to overcome the problems in the prior art that power outages often occur, the pneumatic actuator cannot be used in dangerous environments, the flow of the butterfly valve is difficult to adjust, and the safety is low. A pneumatic butterfly valve with a flow adjustment structure is provided to solve the above shortcomings and is convenient to use.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0005] The utility model discloses a pneumatic butterfly valve with a flow regulating structure, the butterfly valve comprises a valve pipe and a regulating mechanism installed inside the valve pipe, a top pipe is installed at the top of the valve pipe, and a control box is installed at the top of the top pipe;

[0006] The inner wall of the valve tube is provided with a built-in groove, a middle plate is installed at the middle end of the inner part of the valve tube, a movable groove is provided inside the middle plate, baffles are installed on the inner wall of the valve tube and on both sides of the middle plate, and a built-in plate is installed at the bottom end of the baffle and inside the built-in groove;

[0007] The adjusting mechanism comprises a pushing plate slidably mounted on both sides of the moving groove and an inclined side plate mounted on one side of the pushing plate, and one end of the inclined side plate is inclined.

[0008] Preferably, a slide groove is provided on one side of the inclined side plate, and a limiting groove is provided on one side of the slide groove and inside the body of the inclined side plate.

[0009] Preferably, a rotation hole is provided inside the valve tube and at the top end of the middle plate, and an inverted T-shaped rotation groove is provided inside the body of the middle plate and at the bottom end of the movable groove.

[0010] Preferably, a motor is installed inside the control box, a threaded rod is installed at the output end of the motor, a sealing tube is installed at the bottom end of the control box and on the outer surface of the threaded rod, a rotating block is installed at the bottom end of the threaded rod, and an internal threaded ring is threadedly connected to the outer surface of the threaded rod.

[0011] Preferably, a swivel is movably mounted on the outer surface of the internal threaded ring, and pushing members are mounted on both sides of the outer surface of the swivel.

[0012] Preferably, the pushing member includes a side strip installed on the outer surface of the rotating ring and rollers installed on both sides of the lower end of the side strip.

[0013] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] (1) The utility model is a pneumatic butterfly valve with a flow regulating structure. Through the roller, limit groove, inclined side plate and push plate, when the flow inside the butterfly valve is adjusted, the motor controls the threaded rod in the moving groove, and the rotating block rotates in the inverted T-shaped rotating groove. The internal threaded ring threaded on the outer surface of the threaded rod will move downward. As the internal threaded ring moves downward, the push member will push the inclined side plate to move toward the two sides of the middle plate. The roller moves in the limit groove to push the inclined side plate and the push plate to move. The push plate moves toward the baffle plate, and the push plate moves between the baffle plate, the built-in plate and the middle plate. When the internal threaded ring is at the lower end of the inclined side plate, the push plate blocks the flow inside the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structure diagram of the utility model;

[0017] Figure 2 This is the internal structure diagram of the valve tube of the utility model;

[0018] Figure 3 This is a structural diagram of the valve tube of the utility model;

[0019] Figure 4 This is a structural diagram of the control box of the utility model;

[0020] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle.

[0021] In the figure: 1. butterfly valve; 11. valve tube; 111. built-in groove; 112. baffle; 113. built-in plate; 114. center plate; 115. movable groove; 116. inverted T-shaped rotating groove; 117. rotating hole; 12. adjustment mechanism; 121. push plate; 122. inclined side plate; 123. limit groove; 124. slide groove; 13. top tube; 14. control box; 141. motor; 142. sealing tube; 143. threaded rod; 144. rotating round block; 145. internal thread ring; 146. rotating ring; 147. push piece; 1471. side strip; 1472. roller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0024] Combination Figure 1 A pneumatic butterfly valve with a flow regulating structure, the butterfly valve 1 comprises a valve tube 11 and a regulating mechanism 12 installed inside the valve tube 11, a top tube 13 is installed at the top of the valve tube 11, and a control box 14 is installed at the top of the top tube 13

[0025] The utility model is further described below in conjunction with embodiments.

[0026] Combination Figure 2-5The inner wall of the valve tube 11 is provided with a built-in groove 111, a middle plate 114 is installed at the middle end of the inner part of the valve tube 11, a movable groove 115 is opened inside the middle plate 114, a baffle 112 is installed on the inner wall of the valve tube 11 and on both sides of the middle plate 114, a built-in plate 113 is installed at the bottom end of the baffle 112 and inside the built-in groove 111, the adjustment mechanism 12 includes a push plate 121 slidably installed on both sides of the inner part of the movable groove 115 and an inclined side plate 122 installed on one side of the push plate 121, and one end of the inclined side plate 122 is inclined, and a slide groove 124 is opened on one side of the inclined side plate 122, and a limited position groove 123 is opened on one side of the slide groove 124 and inside the body of the inclined side plate 122, the inner part of the valve tube 11 and at the top of the middle plate 114 A rotating hole 117 is provided through the end, an inverted T-shaped rotating groove 116 is provided inside the body of the middle plate 114 and at the bottom end of the movable groove 115, a motor 141 is installed inside the control box 14, a threaded rod 143 is installed at the output end of the motor 141, a sealing tube 142 is installed at the bottom end of the control box 14 and on the outer surface of the threaded rod 143, a rotating block 144 is installed at the bottom end of the threaded rod 143, an internal threaded ring 145 is threadedly connected to the outer surface of the threaded rod 143, a swivel 146 is movably installed on the outer surface of the internal threaded ring 145, and pushing members 147 are installed on both sides of the outer surface of the swivel 146, and the pushing members 147 include side strips 1471 installed on the outer surface of the swivel 146 and rollers 1472 installed on both sides of the lower end of the side strips 1471.

[0027] In this embodiment: when the flow rate inside the butterfly valve 1 is adjusted, the motor 141 controls the threaded rod 143 to rotate inside the moving groove 115, and the rotating block 144 rotates inside the inverted T-shaped rotating groove 116, and the internal threaded ring 145 threadedly connected to the outer surface of the threaded rod 143 will move downward. As the internal threaded ring 145 moves downward, the set pushing member 147 will push the inclined side plate 122 to move toward the two sides of the middle plate 114, and the roller 1472 moves inside the limiting groove 123. When pushing the inclined side plate 122 and the pushing plate 121 to move, the pushing plate 121 moves toward the baffle 112, and the pushing plate 121 moves into between the baffle plate 112, the built-in plate 113 and the middle plate 114. When the internal thread ring 145 is at the lower end of the inclined side plate 122, the pushing plate 121 blocks the flow inside the butterfly valve 1. During the downward movement of the internal thread ring 145, the rotating ring 146 movably installed on the outer surface of the internal thread ring 145 rotates to keep the pushing member 147 from changing in the vertical direction. The set sealing tube 142 is inside the top tube 13 to avoid water seepage inside the butterfly valve 1. On the contrary, the internal thread ring 145 moves upward and pulls the inclined side plates 122 closer to each other through the roller 1472 to prevent liquid from passing through the inside of the valve tube 11.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic butterfly valve with a flow regulating structure, characterized in that: The butterfly valve (1) comprises a valve tube (11) and an adjusting mechanism (12) installed inside the valve tube (11); a top tube (13) is installed at the top of the valve tube (11); and a control box (14) is installed at the top of the top tube (13); The inner wall of the valve tube (11) is provided with a built-in groove (111), a middle plate (114) is installed at the middle end of the valve tube (11), a movable groove (115) is provided inside the middle plate (114), baffles (112) are installed on the inner wall of the valve tube (11) and on both sides of the middle plate (114), and a built-in plate (113) is installed at the bottom end of the baffle (112) and inside the built-in groove (111); The adjustment mechanism (12) comprises a push plate (121) slidably mounted on both sides of the inside of the moving groove (115) and an inclined side plate (122) mounted on one side of the push plate (121), and one end of the inclined side plate (122) is inclined.

2. The pneumatic butterfly valve with a flow regulating structure according to claim 1, characterized in that: A sliding groove (124) is provided on one side of the inclined side plate (122), and a limiting groove (123) is provided on one side of the sliding groove (124) and inside the body of the inclined side plate (122).

3. The pneumatic butterfly valve with a flow regulating structure according to claim 1, characterized in that: A rotation hole (117) is provided inside the valve tube (11) and at the top end of the middle plate (114), and an inverted T-shaped rotation groove (116) is provided inside the body of the middle plate (114) and at the bottom end of the moving groove (115).

4. The pneumatic butterfly valve with a flow regulating structure according to claim 1, characterized in that: A motor (141) is installed inside the control box (14), a threaded rod (143) is installed at the output end of the motor (141), a sealing tube (142) is installed at the bottom end of the control box (14) and on the outer surface of the threaded rod (143), a rotating block (144) is installed at the bottom end of the threaded rod (143), and an internal threaded ring (145) is threadedly connected to the outer surface of the threaded rod (143).

5. The pneumatic butterfly valve with a flow regulating structure according to claim 4, characterized in that: A rotating ring (146) is movably mounted on the outer surface of the internal thread ring (145), and pushing pieces (147) are mounted on both sides of the outer surface of the rotating ring (146).

6. The pneumatic butterfly valve with a flow regulating structure according to claim 5, characterized in that: The pushing member (147) comprises a side strip (1471) installed on the outer surface of the rotating ring (146) and rollers (1472) installed on both sides of the lower end of the side strip (1471).

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