Multi-sealing groove butterfly valve

Abstract

The utility model relates to the related field of groove butterfly valves, in particular to a multi-sealing groove butterfly valve which comprises a valve body, a worm gear case, a valve plate, a valve rod, a fixing box, a micro air pump, a power source, an air pipe, a sealing air bag, an opening plate, a delay switch, an annular sealing groove, a sealing ring and the like. The sealing air bag is arranged in the valve body, after the valve plate is closed, the delay switch starts the miniature air pump to inflate the sealing air bag, the sealing air bag is inflated and expanded to be attached to the inner side of the annular sealing groove in the side surface of the valve plate, and compared with an arranged spring sealing air bag, pressure can be applied to the valve plate more evenly; the sealing effect of the valve plate can be more comprehensively improved, the sealing air bag is in a contraction state before being inflated, friction force between the sealing air bag and the valve plate can be effectively reduced, abrasion of the sealing air bag can be reduced, sealing can be continuously provided between the valve plate and the valve body, and the sealing effect between the valve plate and the valve body can be improved.

Description

Technical Field

[0001] The utility model relates to the relevant field of groove butterfly valves, in particular to a multiple sealing groove butterfly valve. Background Art

[0002] Grooved butterfly valve is a type of valve, mainly used in fire protection, water supply, heating, air conditioning, oil, gas and other pipeline systems, used to regulate or cut off the flow of fluid. Its characteristic is that the connection between the valve body and the pipeline adopts groove connection (also known as clamp connection). This connection method does not require welding, is quick and easy to install, and has good sealing and adjustment performance. Grooved butterfly valve is widely used because of its easy installation and simple maintenance.

[0003] The existing publication number is: CN220980345U discloses a pneumatic butterfly valve with multiple seals. By providing a sealing ring, a spring sleeve and a stainless steel sheet, when the sealing ring inside the pneumatic butterfly valve shrinks when it is cold, the inner wall of the sealing ring is pushed out with the cooperation of the stainless steel sheet and the spring sleeve, so that the inner wall of the sealing ring fits tightly with the valve plate, thereby achieving a good sealing effect.

[0004] This existing patent uses a spring to push the sealing ring outward and fit it onto the valve plate. The part of the sealing ring with a spring and the part without a spring exert different pressure on the valve plate, which can easily cause a gap between the part of the sealing ring without a spring and the valve plate, affecting the sealing effect. In addition, due to the presence of the spring, the sealing ring protrudes inside the valve body, so that the valve plate needs to overcome the elastic force of the spring when closing. The friction between the valve plate and the sealing ring is greater, which can easily cause the sealing ring to wear and affect the sealing effect of the valve plate connecting the valve body. Summary of the invention

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a multi-sealing groove butterfly valve to solve the above-mentioned technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multi-sealed groove butterfly valve, comprising a valve body, a worm gear box fixed on the top of the valve body, a valve plate movably installed in the valve body, a valve stem movably connected to the inner side of the valve body is installed on the top of the valve plate, and the end of the valve stem away from the valve plate is connected to the output end of the worm gear box, a fixed box is installed on the side surface of the valve body, a micro air pump and a power supply are built in the fixed box, and a controller is installed on the side surface of the fixed box;

[0007] An opening plate is fixedly mounted on the side surface of the valve stem;

[0008] The air outlet end of the micro air pump is plugged with an air pipe;

[0009] The controller is provided with a timing module and a processing module;

[0010] One end of the air pipe away from the micro air pump is connected to a sealing airbag embedded in the valve body, and the sealing airbag moves into the annular sealing groove provided on the circumferential side surface of the valve plate after being inflated;

[0011] The opening plate is movably connected to the inner side of an annular groove opened at the inner top of the valve body. A delay switch matching the opening plate is installed in the annular groove. The delay switch, micro air pump, power supply and controller are all electrically connected to the controller.

[0012] Preferably, a placement groove corresponding to the sealing airbag is opened on the inner side of the valve body, and the sealing airbag is contracted in the placement groove in a natural state.

[0013] Preferably, an exhaust pipe is installed on the sealing airbag, the exhaust pipe is connected to the inner side of the sealing airbag, and the exhaust pipe movably penetrates the side surface of the valve body.

[0014] Preferably, a one-way solenoid valve is installed on the exhaust pipe, and the one-way solenoid valve is electrically connected to the controller.

[0015] Preferably, two sealing rings are embedded on the circumferential side surface of the valve plate, and the two sealing rings are respectively located on the left and right sides of the annular sealing groove.

[0016] Preferably, the inner ring of the sealing airbag is coated with a nano-ceramic coating.

[0017] Beneficial effects of the utility model:

[0018] The utility model arranges a sealing airbag in the valve body, and after the valve plate is closed, a delay switch turns on a micro air pump to inflate the sealing airbag. The sealing airbag is inflated and fits against the inner side of the annular sealing groove on the side surface of the valve plate. Compared with a spring sealing airbag, it can apply pressure to the valve plate more evenly, and can more comprehensively improve the sealing effect of the valve plate. Before the sealing airbag is inflated, it is in a contracted state, which can effectively reduce the friction with the valve plate, and is beneficial to reducing the wear of the sealing airbag, thereby facilitating continuous sealing between the valve plate and the valve body, and improving the sealing effect between the valve plate and the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall rear cross-sectional structure of the groove butterfly valve of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional connection structure of the valve body of the utility model when viewed from above;

[0021] Figure 3 The utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 4It is a front view structural schematic diagram of the groove butterfly valve of the utility model.

[0023] Among them: valve body-1, worm gear box-2, valve plate-3, valve stem-4, fixed box-5, micro air pump-6, power supply-7, controller-8, timing module-9, processing module-10, air pipe-11, sealing air bag-12, opening plate-13, annular groove-14, delay switch-15, annular sealing groove-16, sealing ring-17, exhaust pipe-18, one-way solenoid valve-19, nano ceramic coating-20. DETAILED DESCRIPTION

[0024] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0025] like Figure 1 As shown, the utility model provides a multi-sealed groove butterfly valve, comprising a valve body 1, a worm gear box 2 fixedly mounted on the top of the valve body 1, a valve plate 3 movably mounted in the valve body 1, a valve stem 4 rotatably connected to the inner side of the valve body 1 is vertically fixedly mounted in the middle of the top surface of the valve plate 3, and the end of the valve stem 4 away from the valve plate 3 is connected to the output end of the worm gear box 2;

[0026] Specifically, when in use, the two ends of the valve body 1 are connected to the external pipeline with clamps respectively. When the medium needs to be transported, the worm gear box 2 can be operated to drive the valve stem 4 to rotate, and the valve stem 4 can drive the valve plate 3 to rotate to open the groove butterfly valve. At this time, the medium can be transported through the groove butterfly valve. The driving member on the reverse control worm gear box 2 can drive the valve plate 3 to rotate and reset, and the groove butterfly valve is closed, and the medium cannot be transported through the groove butterfly valve.

[0027] like Figures 1 to 4 As shown, in this embodiment, a fixing box 5 is locked and fixed to the left end surface of the valve body 1, and a micro air pump 6 and a power supply 7 are built in the fixing box 5, and a controller 8 is locked and fixed to the side surface of the fixing box 5;

[0028] An opening plate 13 is vertically fixed to the side surface of the valve stem 4;

[0029] The bottom air outlet of the micro air pump 6 is plugged with an air pipe 11, and the air pipe 11 is used to transport the gas generated by the micro air pump 6 to the sealed air bag 12;

[0030] The controller 8 is provided with a timing module 9 and a processing module 10;

[0031] The bottom of the air pipe 11 is connected to a sealing airbag 12 fixedly embedded in the valve body 1. After being inflated, the sealing airbag 12 movably extends into an annular sealing groove 16 provided on the circumferential side surface of the valve plate 3, so that the sealing airbag 12 cooperates with the annular sealing groove 16 to provide sealing for the valve plate 3, thereby reducing medium leakage.

[0032] The opening plate 13 is movably connected to the inner side of an annular groove 14 provided at the inner top of the valve body 1. A time delay switch 15 matching the opening plate 13 is installed in the annular groove 14. The time delay switch 15, the micro air pump 6, the power supply 7 and the controller 8 are all electrically connected to the controller 8.

[0033] In this embodiment, a placement groove corresponding to the sealing airbag 12 is opened on the inner side of the valve body 1. The sealing airbag 12 shrinks in the placement groove in a natural state, reducing excessive friction between the valve plate 3 and the sealing airbag 12 when the valve plate 3 is rotated to close, thereby reducing the wear of the sealing airbag 12 due to friction;

[0034] In this embodiment, an exhaust pipe 18 is installed on the sealing airbag 12, the exhaust pipe 18 is connected to the inner side of the sealing airbag 12, and the exhaust pipe 18 movably penetrates the side surface of the valve body 1, so that the gas in the sealing airbag 12 can be discharged outward through the exhaust pipe 18, thereby facilitating the sealing airbag 12 to shrink and the valve plate 3 to rotate quickly;

[0035] Among them, a one-way solenoid valve 19 is installed on the exhaust pipe 18, and the one-way solenoid valve 19 is electrically connected to the controller 8, so as to control the on-off of the gas in the exhaust pipe 18 through the one-way solenoid valve 19;

[0036] In this embodiment, two sealing rings 17 are embedded on the circumferential side surface of the valve plate 3, and the two sealing rings 17 are respectively located on the left and right sides of the annular sealing groove 16, so that the two sealing rings 17 cooperate with the sealing airbag 12 to provide multiple seals for the valve plate 3, thereby improving the sealing performance of the sealing airbag 12 connected to the valve body 1;

[0037] In this embodiment, the sealing ring 17 is made of silicone, which has good elasticity and good sealing performance;

[0038] In this embodiment, the inner ring of the sealing airbag 12 is coated with a nano-ceramic coating 20, which is beneficial to improving the wear resistance of the sealing airbag 12 and increasing the service life of the sealing airbag 12;

[0039] In this embodiment, the timing module 9 adopts the timely module of the H3CR series of OMRON, which can provide a variety of time range options, and has the advantage of simple installation;

[0040] Specifically, the opening time of the micro air pump 6 is set by the controller 8 in cooperation with the timing module 9. When the groove butterfly valve is closed, the valve stem 4 drives the opening plate 13 to rotate. When the valve stem 4 drives the valve plate 3 to be completely closed, the opening plate 13 rotates to squeeze the delay switch 15. The delay switch 15 delays the start of the micro air pump 6. The micro air pump 6 inputs gas into the sealing air bag 12 through the air pipe 11. The sealing air bag 12 is inflated and fits with the inner side of the annular sealing groove 16. The sealing air bag 12 cooperates with the annular sealing groove 16 to provide a seal between the valve plate 3 and the valve body 1. When the micro air pump 6 is turned on for the preset time of the timing module 9, the micro air pump 6 stops working. At this time, the sealing air bag 12 cooperates with the sealing ring 17 on the valve plate 3 to provide multiple seals for the valve plate 3 to prevent the medium from flowing and leaking in the gap between the valve plate 3 and the valve body 1.

[0041] When the groove butterfly valve is opened, the valve stem 4 drives the valve plate 3 to rotate, and the valve plate 3 drives the annular sealing groove 16 to rotate and separate from the sealing airbag 12. When the valve plate 3 is separated from the sealing airbag 12, the sealing airbag 12 is elastically deformed by pressure. When the valve plate 3 is completely separated from the sealing airbag 12, the sealing airbag 12 restores its deformation, and the valve stem 4 drives the opening plate 13 to separate from the delay switch 15, and transmits the signal to the controller 8. The signal is processed by the processing module 10 and the controller 8 starts the one-way solenoid valve 19. At this time, the gas in the sealing airbag 12 is discharged outward through the exhaust pipe 18, and the sealing airbag 12 is exhausted and contracts, so that the valve plate 3 can be closed again.

[0042] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-sealed groove butterfly valve, comprising a valve body, a worm gear box fixed on the top of the valve body, a valve plate movably mounted in the valve body, a valve stem movably connected to the inner side of the valve body mounted on the top of the valve plate, and an end of the valve stem away from the valve plate connected to the output end of the worm gear box; It is characterized in that A fixed box is installed on the side surface of the valve body, a micro air pump and a power supply are built into the fixed box, and a controller is installed on the side surface of the fixed box; An opening plate is fixedly mounted on the side surface of the valve stem; The air outlet end of the micro air pump is plugged with an air pipe; The controller is provided with a timing module and a processing module; One end of the air pipe away from the micro air pump is connected to a sealing airbag embedded in the valve body, and the sealing airbag moves into the annular sealing groove provided on the circumferential side surface of the valve plate after being inflated; The opening plate is movably connected to the inner side of an annular groove opened at the inner top of the valve body. A delay switch matching the opening plate is installed in the annular groove. The delay switch, micro air pump, power supply and controller are all electrically connected to the controller.

2. A multi-seal groove butterfly valve according to claim 1, characterized in that: The inner side of the valve body is provided with a placement groove corresponding to the sealing airbag, and the sealing airbag is contracted in the placement groove in a natural state.

3. A multi-seal groove butterfly valve according to claim 1, characterized in that: An exhaust pipe is installed on the sealing airbag, the exhaust pipe is connected to the inner side of the sealing airbag, and the exhaust pipe movably penetrates the side surface of the valve body.

4. A multi-seal groove butterfly valve according to claim 3, characterized in that: A one-way solenoid valve is installed on the exhaust pipe, and the one-way solenoid valve is electrically connected to the controller.

5. The multi-seal groove butterfly valve according to claim 1, characterized in that: Two sealing rings are embedded on the circumferential side surface of the valve plate, and the two sealing rings are respectively located on the left and right sides of the annular sealing groove.

6. The multi-seal groove butterfly valve according to claim 1, characterized in that: The inner ring of the sealing airbag is coated with a nano-ceramic coating.

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