High-tightness butterfly valve with buffering function

Abstract

The high-tightness butterfly valve with the buffering function comprises a connecting plate, through holes are symmetrically formed in the connecting plate, the outer side of the connecting plate is fixedly connected to the side wall of an inner cavity of a butterfly valve shell in a sealed mode, a sealing plate is movably arranged on the left sides of the through holes, and a push-pull rod is fixedly connected to the middle of the right end of the sealing plate; the right side of the push-pull rod is movably sleeved with a limiting ring. According to the integral structure provided by the embodiment of the invention, the sealing surface of the sealing plate is positioned on the opposite surface of the liquid inlet, so that the impact force on the sealing ring is greatly reduced, and the service life of the sealing ring can be prolonged; the transmission motor rotates to drive the spiral impeller to rotate, so that the spiral impeller rotates reversely, the liquid inlet entering the butterfly valve shell is pushed, the liquid entering the butterfly valve shell is buffered, the pressure of the liquid entering the butterfly valve shell is reduced, the efficient buffering effect is achieved, the impact force on the sealing plate is reduced, and the sealing plate is protected.

Description

Technical Field

[0001] The present application relates to the technical field of butterfly valves, and in particular to a high-sealing butterfly valve with a buffering function. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays a role of cutting off and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulating; However, ordinary butterfly valves do not have a buffering function when in use, and after long-term use, the sealing degree does not meet the requirements. Therefore, we propose a high-sealing butterfly valve with a buffering function. Summary of the invention

[0003] The present application provides a high-sealing butterfly valve with a buffering function to solve the above-mentioned problems.

[0004] The present application provides a high-sealing butterfly valve with a buffering function, comprising: A connecting plate, wherein through holes are symmetrically opened on the connecting plate, the outer side of the connecting plate is fixedly and sealedly connected to the inner cavity side wall of the butterfly valve housing, a sealing plate is movably provided on the left side of the through hole, a push-pull rod is fixedly connected to the middle part of the right end of the sealing plate, the right outer side of the push-pull rod is movably sleeved with a limiting ring, the right end of the push-pull rod is rotatably connected to a driving block through a connecting shaft, a limiting opening is penetrated through the lower part of the driving block, a rectangular block is movably inserted in the limiting opening, and a transmission shaft is fixedly inserted in the middle part of the rectangular block, and the front and rear sides of the transmission shaft are plugged into the front and rear side walls of the butterfly valve housing through bearing seals; A transmission motor, wherein a waterproof housing is provided on the outside of the transmission motor, a connecting plate is fixedly connected to the outside of the transmission motor, the outside of the connecting plate is fixedly connected to the left end of the connecting plate through a first bracket, and a spiral impeller is fixedly connected to the rotating shaft of the transmission motor; The switch is fixedly connected to the outside of the butterfly valve housing and is located on the outside of the transmission shaft. The front part of the outside of the transmission shaft is fixedly sleeved with an extrusion block. The extrusion block is squeezed along with the transmission shaft to close the switch. The switch is connected to the transmission motor through a wire.

[0005] Preferably, the diameter of the sealing plate is larger than the diameter of the through hole, a sealing ring is fixedly embedded on the outer side of the right end of the sealing plate, and the minimum diameter of the sealing ring is larger than the diameter of the through hole.

[0006] Preferably, a second bracket is fixedly connected to the outer side of the limiting ring, and the left end of the second bracket is fixedly connected to the right end of the connecting plate.

[0007] Preferably, the height of the limiting opening is greater than the height of the rectangular block.

[0008] Preferably, a handle is fixedly connected to the front end of the transmission shaft, and a positioning rod is also provided on the handle.

[0009] Preferably, the lower end surface of the switch button of the switch is an inclined surface.

[0010] Preferably, the left end surface of the connecting plate is smooth.

[0011] Preferably, a liquid inlet cavity and a liquid outlet cavity are respectively provided at the left and right ends of the butterfly valve housing, and the internal spaces of the liquid inlet cavity and the liquid outlet cavity increase and decrease respectively from left to right, and the left and right ends of the liquid inlet cavity and the liquid outlet cavity are respectively connected to a liquid inlet pipe and a liquid outlet pipe.

[0012] Preferably, the lower end of the butterfly valve housing is fixedly connected to a base.

[0013] Preferably, a positioning plate is fixedly sleeved on the front outer side of the butterfly valve housing connected to the transmission shaft, and two positioning openings are formed on the outer side of the positioning plate.

[0014] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: In the overall structure provided by the embodiment of the present application, the sealing surface of the sealing plate is located on the opposite surface of the liquid inlet, so that the impact force on the sealing ring is greatly reduced, thereby increasing the service life of the sealing ring, and when the sealing ring is sealing, the pressure on the outer side is also small, thereby increasing the sealing effect of the sealing ring; When the handle is turned to the left to close the valve, the transmission shaft and the extrusion block will be driven to rotate. When the extrusion block rotates, the switch button will be squeezed to connect the external power supply, so that the transmission motor rotates, and the spiral impeller is driven to rotate, so that the spiral impeller is reversed, and the liquid inlet entering the butterfly valve housing is pushed, and the incoming liquid is buffered, thereby reducing the liquid pressure entering the butterfly valve housing, which has a high-efficiency buffering effect, reduces the impact force on the sealing plate, and protects the sealing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram showing the internal structure of a butterfly valve housing of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural diagram of the transmission shaft of the present invention; Figure 5 It is a structural diagram of the sealing plate of the present invention; Figure 6 It is the front view of the transmission shaft of the present invention.

[0018] In the figure: 1. butterfly valve housing; 2. base; 3. transmission shaft; 4. handle; 5. extrusion block; 6. switch; 7. positioning plate; 8. connecting plate; 9. through hole; 10. second bracket; 11. limit ring; 12. push-pull rod; 13. connecting shaft; 14. driving block; 15. first bracket; 16. sealing plate; 17. transmission motor; 18. connecting plate; 19. spiral impeller; 20. rectangular block; 21. limit opening; 22. sealing ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] Various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and simplicity and should not be understood as a hard limit to the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values ​​within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which are applicable regardless of the range. In addition, whenever a numerical range is indicated in the present application, it is meant to include any quoted numbers (fractions or integers) within the indicated range. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application, etc., can be purchased from the market or can be prepared by existing equipment.

[0021] In the present application, in the absence of any contrary description, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the present application, the terms "include", "comprise", etc. refer to "including but not limited to". In the present application, relational terms such as "first" and "second" 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. In the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In the present application, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular items or plural items. For example, "at least one of a, b, or c" or "at least one of a, b and c" can both mean: a, b, c, ab, i.e. a and b, ac, bc, or abc, where a, b, c can be single or plural, respectively.

[0022] like Figure 1-Figure 6 As shown: The embodiment of the present application provides a high-sealing butterfly valve with a buffering function, comprising: A connecting plate 8, wherein the connecting plate 8 is symmetrically provided with through holes 9, the outer side of the connecting plate 8 is fixedly and sealedly connected to the inner cavity side wall of the butterfly valve housing 1, a sealing plate 16 is movably provided on the left side of the through hole 9, a push-pull rod 12 is fixedly connected to the middle part of the right end of the sealing plate 16, the right outer side of the push-pull rod 12 is movably sleeved with a limiting ring 11, the right end of the push-pull rod 12 is rotatably connected to a driving block 14 through a connecting shaft 13, a limiting opening 21 is penetrated through the lower part of the driving block 14, a rectangular block 20 is movably inserted in the limiting opening 21, and a transmission shaft 3 is fixedly inserted in the middle part of the rectangular block 20, and the front and rear sides of the transmission shaft 3 are plugged into the front and rear side walls of the butterfly valve housing 1 through bearing seals; A transmission motor 17, wherein a waterproof housing is provided on the outer side of the transmission motor 17, a connecting plate 18 is fixedly connected to the outer side of the transmission motor 17, and the outer side of the connecting plate 18 is fixedly connected to the left end of the connecting plate 8 through a first bracket 15, and a spiral impeller 19 is fixedly connected to the rotating shaft of the transmission motor 17; The switch 6 is fixedly connected to the outside of the butterfly valve housing 1 and is located on the outside of the transmission shaft 3. The front part of the outside of the transmission shaft 3 is fixedly sleeved with an extrusion block 5. The extrusion block 5 is squeezed along with the transmission shaft 3 to close the switch 6. The switch 6 is connected to the transmission motor 17 through a wire.

[0023] Specifically, the transmission motor 17 adopts an existing motor on the market, which is an existing technology. The transmission motor 17 can drive the spiral impeller 19 to flip. The switch 6 adopts an existing switch on the market. The button of the switch 6 is squeezed and displaced to turn on the power when a force is applied, and when no force is applied, the button of the switch 6 automatically returns to the disconnected state. When the handle 4 is turned to the left to close the valve, the transmission shaft 3 and the extrusion block 5 are driven to rotate. When the extrusion block 5 rotates, the switch button 6 is squeezed to connect the external power supply, so that the transmission motor 17 rotates, and the spiral impeller 19 is driven to rotate, so that the spiral impeller 19 is reversed, and the liquid inlet entering the butterfly valve housing 1 is pushed, and the incoming liquid is buffered, thereby reducing the liquid pressure entering the butterfly valve housing 1, and having a high-efficiency buffering effect; Such a valve body can be suitable for situations where the external liquid pressure is relatively high, and the transmission motor 17 needs to be connected to a controller and a timer to control the working time of the transmission motor 17 after being powered on.

[0024] like Figure 2 As shown, the diameter of the sealing plate 16 is larger than the diameter of the through hole 9 , a sealing ring 22 is fixedly embedded on the outer side of the right end of the sealing plate 16 , and the minimum diameter of the sealing ring 22 is larger than the diameter of the through hole 9 .

[0025] Specifically, the through hole 9 is a switch hole of the valve body. When it is opened, it is a through hole for fluid, and the sealing ring 22 is a sealing member.

[0026] like Figure 2 As shown: a second bracket 10 is fixedly connected to the outer side of the limiting ring 11 , and a left end of the second bracket 10 is fixedly connected to the right end of the connecting plate 8 .

[0027] Specifically, the limiting ring 11 can limit the push-pull rod 12 to move only left and right.

[0028] like Figure 3 As shown in FIG. 2 , the height of the limit opening 21 is greater than the height of the rectangular block 20 .

[0029] Specifically, the rectangular block 20 can be displaced inside the limiting opening 21 , so that when the driving block 14 is driven to rotate and the push-pull rod 12 is driven to displace, there is space for its displacement.

[0030] like Figure 1 As shown: the front end of the transmission shaft 3 is fixedly connected with a handle 4, and a positioning rod is also provided on the handle 4.

[0031] Specifically, the handle 4 can conveniently rotate the transmission shaft 3 manually, and the positioning rod can be displaced forward and backward and inserted into the positioning port of the positioning plate 7, so as to locate the position of the transmission shaft 3 after rotation.

[0032] like Figure 6 As shown: the lower end surface of the switch button of the switch 6 is an inclined surface.

[0033] Specifically, the inclined surface can buffer the force exerted by the external pressure on the pressure block 5 .

[0034] like Figure 2 As shown: the left end surface of the connecting plate 8 is smooth.

[0035] Specifically, a smooth left end surface can enhance the sealing performance of the sealing plate 16 .

[0036] like Figure 1 As shown: the left and right ends of the butterfly valve housing 1 are respectively provided with a liquid inlet cavity and a liquid outlet cavity, the internal spaces of the liquid inlet cavity and the liquid outlet cavity increase and decrease respectively from left to right, and the left and right ends of the liquid inlet cavity and the liquid outlet cavity are respectively connected to a liquid inlet pipe and a liquid outlet pipe.

[0037] Specifically, the liquid inlet cavity increases in size from left to right, which also has a buffering effect.

[0038] like Figure 1 As shown: the lower end of the butterfly valve housing 1 is fixedly connected to a base 2.

[0039] Specifically, the base 2 supports the butterfly valve housing 1 .

[0040] like Figure 1As shown, a positioning plate 7 is fixedly sleeved on the front part of the outer side of the butterfly valve housing 1 connected to the transmission shaft 3, and two positioning openings are formed on the outer side of the positioning plate 7.

[0041] Specifically, the positioning plate 7 is used to position the handle 4 after it is rotated, that is, the two positions where the handle 4 is positioned are the open state and the closed state of the butterfly valve.

[0042] Principle of use: When the equipment is in use, the handle 4 is manually turned, and the handle 4 rotates to drive the transmission shaft 3 to the set angle, thereby driving the driving block 14 to rotate around the transmission shaft 3, thereby pulling or pushing the push-pull rod 12 to move right or left, causing the sealing plate 16 to move right or left. When the sealing plate 16 moves to the right, it blocks the through hole 9, thereby achieving a flow-breaking effect. Conversely, when the sealing plate 16 moves to the left, it opens the through hole 9, thereby achieving a flow-opening effect. Since the sealing surface of the sealing plate 16 is located on the opposite side of the liquid inlet, the impact force on the sealing ring 22 will be greatly reduced, thereby increasing the service life of the sealing ring 22, and when the sealing ring 22 is sealing, the pressure on the outside is also small, thereby increasing the sealing effect of the sealing ring 22. And when the handle 4 is turned to the left to close the valve, the transmission shaft 3 and the extrusion block 5 will be driven to rotate. When the extrusion block 5 rotates, the switch button of the switch 6 will be squeezed, thereby connecting the external power supply, so that the transmission motor 17 rotates, and drives the spiral impeller 19 to rotate, so that the spiral impeller 19 reverses, and pushes the liquid inlet entering the butterfly valve housing 1, and buffers the incoming liquid, thereby reducing the liquid pressure entering the butterfly valve housing 1, and has a high-efficiency buffering effect, and reduces the impact force on the sealing plate 16, and protects the sealing plate 16. Such a valve body can be suitable for situations where the external liquid pressure is large, and the transmission motor 17 needs to be connected to a controller and a timer to control the working time of the transmission motor 17 after power is turned on.

[0043] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.

Claims

1. A high-sealing butterfly valve with a buffer function, characterized in that: include: A connecting plate (8), wherein the connecting plate (8) is symmetrically provided with through holes (9), the outer side of the connecting plate (8) is fixedly and sealedly connected to the inner cavity side wall of the butterfly valve housing (1), a sealing plate (16) is movably provided on the left side of the through hole (9), a push-pull rod (12) is fixedly connected to the middle part of the right end of the sealing plate (16), the right outer side of the push-pull rod (12) is movably sleeved with a limiting ring (11), the right end of the push-pull rod (12) is rotatably connected to a driving block (14) via a connecting shaft (13), a limiting opening (21) is penetrated through the lower part of the driving block (14), a rectangular block (20) is movably inserted into the inner part of the limiting opening (21), and a transmission shaft (3) is penetrated and fixedly inserted into the middle part of the rectangular block (20), and the front and rear sides of the transmission shaft (3) are plugged into the front and rear side walls of the butterfly valve housing (1) via bearing seals; A transmission motor (17), wherein a waterproof housing is provided on the outer side of the transmission motor (17), a connecting plate (18) is fixedly connected to the outer side of the transmission motor (17), the outer side of the connecting plate (18) is fixedly connected to the left end of the connecting plate (8) via a first bracket (15), and a spiral impeller (19) is fixedly connected to the rotating shaft of the transmission motor (17); A switch (6), the switch (6) being fixedly connected to the outside of the butterfly valve housing (1) and located on the outside of the transmission shaft (3); the front part of the outside of the transmission shaft (3) being fixedly sleeved with an extrusion block (5); the extrusion block (5) being squeezed along with the transmission shaft (3) so that the switch (6) is closed; the switch (6) is connected to the transmission motor (17) via a wire.

2. A high-sealing butterfly valve with a buffering function according to claim 1, characterized in that: The diameter of the sealing plate (16) is greater than the diameter of the through hole (9); a sealing ring (22) is fixedly embedded on the outer side of the right end of the sealing plate (16); and the minimum diameter of the sealing ring (22) is greater than the diameter of the through hole (9).

3. The high-sealing butterfly valve with buffering function according to claim 1, characterized in that: A second bracket (10) is fixedly connected to the outer side of the limiting ring (11), and the left end of the second bracket (10) is fixedly connected to the right end of the connecting plate (8).

4. The high-sealing butterfly valve with buffering function according to claim 1, characterized in that: The height of the limiting opening (21) is greater than the height of the rectangular block (20).

5. The high-sealing butterfly valve with buffering function according to claim 1, characterized in that: The front end of the transmission shaft (3) is fixedly connected to a handle (4), and a positioning rod is also provided on the handle (4).

6. The high-sealing butterfly valve with buffer function according to claim 1, characterized in that: The lower end surface of the switch button of the switch (6) is an inclined surface.

7. The high-sealing butterfly valve with buffer function according to claim 1, characterized in that: The left end surface of the connecting plate (8) is smooth.

8. The high-sealing butterfly valve with buffer function according to claim 1, characterized in that: The butterfly valve housing (1) is provided with a liquid inlet cavity and a liquid outlet cavity at the left and right ends respectively, the internal spaces of the liquid inlet cavity and the liquid outlet cavity increase and decrease respectively from left to right, and the left and right ends of the liquid inlet cavity and the liquid outlet cavity are connected to a liquid inlet pipe and a liquid outlet pipe respectively.

9. The high-sealing butterfly valve with buffering function according to claim 1, characterized in that: The lower end of the butterfly valve housing (1) is fixedly connected to a base (2).

10. The high-sealing butterfly valve with buffer function according to claim 1, characterized in that: The butterfly valve housing (1) is fixedly sleeved with a positioning plate (7) at the front portion of the outer side of the housing connected to the transmission shaft (3), and the outer side of the positioning plate (7) is provided with two positioning openings.

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