Butterfly slow-closing energy-saving check valve
By introducing movable check partitions and hydraulic drives into the electric butterfly valve, the problem of reverse flow of water flow in the electric butterfly valve is solved, and the protection and energy-saving effect of valves and pipelines is achieved.
Patent Information
- Application Number
- CN202420557554.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The existing electric butterfly valve lacks the check function, which may cause the water flow to flow in reverse, damage the valve and pipeline, and affect the service life.
A butterfly type slow-closing and energy-saving check valve is designed. By setting a movable check partition and a movable plug inside the valve body, the check partition is slowly closed by hydraulically driven to avoid water flow backflow, and pass through the micro-electrically controlled valve. and transfer pipes to achieve energy saving effects.
It effectively avoids water flow backflow, protects valves and pipelines, reduces the resistance of the check partition, and achieves energy-saving effect without additional power.
Smart Images
Figure CN222142092U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly type slow-closing energy-saving check valve. Background Art
[0002] The electric butterfly valve is a valve that uses a circular butterfly plate as the opening and closing part and rotates with the valve stem to open, close and adjust the fluid channel.
[0003] In the prior art, the electric butterfly valve proposed in patent application number "CN201820063121.4" includes an outer ring body, an inner ring body, a sealing ring, a valve stem and a valve plate. When the electric butterfly valve of the utility model is in use, the pipe to be connected is inserted into the sealing ring, and the distance between the first fixing part and the second fixing part is shortened by bolts.
[0004] However, the electric butterfly valve in the prior art lacks a check function for water flow, which may cause the water flow to flow in the opposite direction. The pressure of the reverse flowing water flow can easily damage the valve and pipeline, thus affecting the service life of the valve and pipeline. Utility Model Content
[0005] The utility model aims to provide a butterfly type slow-closing energy-saving check valve to solve the problems raised in the above-mentioned background technology.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A butterfly type slow-closing energy-saving check valve comprises a valve body and a butterfly plate arranged inside the valve body, wherein the two ends of the valve body are provided with a water inlet end and a water outlet end, the interior of the valve body is provided with a connecting water hole, a spherical closed cavity is provided in the connecting water hole, a ball valve is provided in the spherical closed cavity, a through hole is provided on the ball valve, the two ends of the connecting water hole are respectively connected with the water inlet end and the water outlet end, and an adjusting cylinder is provided in the valve body.
[0008] A movable plug is provided in the regulating cylinder, one side of the movable plug is fixedly connected to a movable shaft, one end of the movable shaft is fixedly connected to a non-return baffle located outside the regulating cylinder, the non-return baffle is used to close the water outlet end, and a connecting pipe is fixedly connected to the bottom of the regulating cylinder, and the bottom plate of the connecting pipe and one end of the connecting water hole located inside the water outlet end are fixedly connected.
[0009] Preferably, a valve stem is provided on the valve body, and the valve stem is fixedly connected to a butterfly plate, and the butterfly plate is used to block the flow of water between the water inlet end and the water outlet end.
[0010] Preferably, the bottom of the valve stem extends to the inside of the spherical closed cavity, and the bottom of the valve stem is fixedly connected to the ball valve to drive the ball valve to rotate.
[0011] Preferably, a closed ring plate is provided on the outer side of the valve body at the water outlet end, one side of the closed ring plate is fixedly connected to the regulating cylinder, and the closed ring plate is provided with water leakage holes in a ring array.
[0012] Preferably, a transfer pipe is fixedly installed on the closed ring plate, a connecting pipe is fixedly connected to the closed ring plate, a micro electric control valve is provided on the connecting pipe, and both ends of the connecting pipe extend to the inside of the transfer pipe and the water outlet end respectively.
[0013] Preferably, a positioning cam is fixedly connected in the regulating cylinder, and the positioning cam is used to limit the movement of the movable plug. Sealing rings are fixedly connected in the spherical closed cavity and on both sides of the ball valve.
[0014] Beneficial effects of the utility model:
[0015] The utility model discloses to prevent water backflow by arranging a movable check baffle inside the valve body, thereby providing protection for the valve body and the pipeline and preventing the pressure of the water backflow from causing damage to the valve and the pipeline. At the same time, the movement of the check baffle pushes the movable plug through the hydraulic pressure, so that the check baffle can be closed slowly, thereby preventing the check baffle from closing too quickly and causing the water flow to be unable to pass completely. At the same time, during the closing process, the remaining water flows through, which can reduce the resistance to the check baffle. The closing of the check baffle is driven by the hydraulic pressure of the water flow, and no additional electricity is required, thereby making the energy-saving effect of the valve better. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This utility model Figure 1 A magnified view of the structure at center A;
[0019] Figure 3 This utility model Figure 1 Structural diagram of the middle water outlet;
[0020] Figure 4 This utility model Figure 1 Schematic diagram of the connection between the middle butterfly plate and the ball valve.
[0021] The reference numerals in the figures are as follows:
[0022] 1. Valve body, 101. Water inlet end, 102. Water outlet end, 2. Valve stem, 3. Butterfly plate, 4. Connecting water hole, 5. Spherical closed cavity, 6. Ball valve, 601. Through hole, 7. Adjusting cylinder, 8. Movable plug, 9. Movable shaft, 10. Check baffle, 11. Connecting pipe, 12. Closed ring plate, 13. Leakage hole, 14. Transfer pipe, 15. Connecting pipe, 16. Micro electric control valve, 17. Positioning cam, 18. Sealing ring. DETAILED DESCRIPTION
[0023] 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 of 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.
[0024] A butterfly type slow-closing energy-saving check valve comprises a valve body 1 and a butterfly plate 3 arranged inside the valve body 1, wherein the two ends of the valve body 1 are provided with a water inlet end 101 and a water outlet end 102, the interior of the valve body 1 is provided with a connecting water hole 4, a spherical closed cavity 5 is provided in the connecting water hole 4, a ball valve 6 is provided in the spherical closed cavity 5, a through hole 601 is provided on the ball valve 6, the two ends of the connecting water hole 4 are respectively connected with the water inlet end 101 and the water outlet end 102, and an adjusting cylinder 7 is provided in the valve body 1.
[0025] A movable plug 8 is provided in the regulating cylinder 7, one side of the movable plug 8 is fixedly connected to a movable shaft 9, one end of the movable shaft 9 and located outside the regulating cylinder 7 is fixedly connected to a non-return baffle 10, the non-return baffle 10 is used to close the water outlet end 102, and the bottom of the regulating cylinder 7 is fixedly connected to a connecting pipe 11, and the bottom plate of the connecting pipe 11 and one end of the connecting water hole 4 located inside the water outlet end 102 are fixedly connected.
[0026] like Figure 1 and Figure 2 The water inlet end 101 and the water outlet end 102 are connected together inside the valve body 1, and the water inlet end 101 and the water outlet end 102 are closed by the rotation and opening and closing of the butterfly plate 3. The through hole 601 on the ball valve 6 and the connecting water hole 4 are in a non-aligned state, so that when the valve body 1 is opened, the connecting water hole 4 is in a closed state.
[0027] The valve body 1 is provided with a valve stem 2 , and the valve stem 2 is fixedly connected to a butterfly plate 3 , and the butterfly plate 3 is used to block the flow of water between the water inlet end 101 and the water outlet end 102 .
[0028] like Figure 1There is an actuator outside the valve body 1, which is electrically driven and connected to an external power source together with the micro-electric control valve 16. It is automatically controlled by the PLC circuit and can control and drive the valve stem 2 to rotate. The valve stem 2 and the actuator are existing technologies and will not be described in detail here.
[0029] The bottom of the valve stem 2 extends to the inside of the spherical closed cavity 5, and the bottom of the valve stem 2 is fixedly connected to the ball valve 6 to drive the ball valve 6 to rotate.
[0030] like Figure 1 and Figure 2 The bottom of the valve stem 2 is connected to the center of the top of the ball valve 6, which can drive the ball valve 6 to rotate inside the spherical closed cavity 5.
[0031] The valve body 1 is provided with a closed ring plate 12 on the outer side of the water outlet end 102 , one side of the closed ring plate 12 is fixedly connected to the regulating cylinder 7 , and the closed ring plate 12 is provided with water leakage holes 13 in a circular array.
[0032] like Figure 1 and Figure 3 The adjusting cylinder 7 is fixed at the center of one side of the closed ring plate 12.
[0033] The closed ring plate 12 is fixedly provided with a transfer pipe 14 , and a connecting pipe 15 is fixedly connected to the closed ring plate 12 . A micro electric control valve 16 is provided on the connecting pipe 15 . Both ends of the connecting pipe 15 extend to the inside of the transfer pipe 14 and the water outlet 102 , respectively.
[0034] like Figure 1 and Figure 3 By setting a closed ring plate 12 at the water outlet end 102 and opening a water leakage hole 13 on the closed ring plate 12, water inside the water outlet end 102 can enter the inside of the transfer pipe 14 through the water leakage hole 13.
[0035] A positioning cam 17 is fixedly connected inside the regulating cylinder 7 , and the positioning cam 17 is used to limit the movement of the movable plug 8 . Sealing rings 18 are fixedly connected inside the spherical closed cavity 5 and on both sides of the ball valve 6 .
[0036] like Figure 1 and Figure 3 The positioning convex shaft 17 can limit the movement of the movable plug 8 to prevent the movable plug 8 from clogging the connecting pipe 11.
[0037] The working principle of a butterfly type slow closing energy-saving check valve provided by the utility model is as follows:
[0038] When the actuator drives the valve stem 2 and the butterfly plate 3 to rotate, the micro-electric control valve 16 is closed, and the butterfly plate 3 closes the valve body 1, the valve stem 2 will drive the ball valve 6 to rotate accordingly, so that the through hole 601 on the ball valve 6 and the connecting water hole 4 are aligned together. At this time, part of the water flow in the water inlet end 101 can enter the inside of the regulating cylinder 7 through the connecting water hole 4 and the connecting pipe 11, and gradually push the movable plug 8 under the action of the hydraulic pressure, driving the movable shaft 9 and the check baffle 10 to move, and the check baffle 10 slowly closes to seal the water outlet pipe 102, thereby preventing the water in the water outlet end 102 from returning to the water inlet end 101.
[0039] When the actuator drives the valve stem 2 and the butterfly plate 3 to rotate, the micro-electric control valve 16 opens, and the butterfly plate 3 opens the valve body 1, water enters the water inlet end 101, which can impact the check baffle 10, causing the movable shaft 9 and the movable plug 8 to move toward the inside of the regulating cylinder 7. At this time, the water flow through the butterfly plate 3 can enter the water outlet end 102, and then flow out through the adapter pipe 14. The valve stem 2 synchronously drives the ball valve 6 to rotate and close the connecting water hole 4. At this time, the movement of the movable plug 8 will squeeze and push the liquid inside the regulating cylinder 7, so that the liquid inside the regulating cylinder 7 gradually flows into the adapter pipe 14 through the connecting pipe 15, reducing the moving speed of the movable plug 8 and the movable shaft 9, so that the check baffle 10 slowly opens.
[0040] Compared with the related art, the butterfly type slow closing energy-saving check valve provided by the utility model has the following advantages:
[0041] Beneficial effects:
[0042] The utility model can avoid water backflow by arranging a movable check baffle 10 inside the valve body 1, provide protection for the valve body 1 and the pipeline, and prevent the pressure of the water backflow from causing damage to the valve and the pipeline. At the same time, the movement of the check baffle 10 pushes the movable plug 8 through the hydraulic pressure, so that the check baffle 10 can be closed slowly, and the check baffle 10 is prevented from closing too quickly and causing the water flow to be unable to pass completely. At the same time, during the closing process, the remaining water flows through, which can reduce the resistance to the check baffle 10. The closing of the check baffle 10 is driven by the hydraulic pressure of the water flow, and there is no need to provide additional electricity, which makes the energy-saving effect of the valve better.
[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A butterfly type slow closing energy-saving check valve, comprising a valve body (1) and a butterfly plate (3) arranged inside the valve body (1), wherein the two ends of the valve body (1) are provided with a water inlet end (101) and a water outlet end (102), characterized in that: The valve body (1) is provided with a connecting water hole (4) inside, a spherical closed cavity (5) is provided inside the connecting water hole (4), a ball valve (6) is provided inside the spherical closed cavity (5), a through hole (601) is provided on the ball valve (6), the two ends of the connecting water hole (4) are respectively connected to the water inlet end (101) and the water outlet end (102), and an adjusting cylinder (7) is provided inside the valve body (1); A movable plug (8) is arranged inside the regulating cylinder (7); a movable shaft (9) is fixedly connected to one side of the movable plug (8); a check baffle (10) is fixedly connected to one end of the movable shaft (9) and located outside the regulating cylinder (7); the check baffle (10) is used to close the water outlet (102); a connecting pipe (11) is fixedly connected to the bottom of the regulating cylinder (7); a bottom plate of the connecting pipe (11) is fixedly connected to one end of the communicating water hole (4) located inside the water outlet (102).
2. A butterfly type slow closing energy-saving check valve according to claim 1, characterized in that: The valve body (1) is provided with a valve stem (2), the valve stem (2) and the butterfly plate (3) are fixedly connected, and the butterfly plate (3) is used to block the flow of water between the water inlet end (101) and the water outlet end (102).
3. A butterfly type slow closing energy-saving check valve according to claim 2, characterized in that: The bottom of the valve stem (2) extends into the interior of the spherical closed cavity (5), and the bottom of the valve stem (2) is fixedly connected to the ball valve (6) to drive the ball valve (6) to rotate.
4. A butterfly type slow closing energy-saving check valve according to claim 1, characterized in that: The valve body (1) is provided with a closed ring plate (12) on the outer side of the water outlet end (102); one side of the closed ring plate (12) is fixedly connected to the regulating cylinder (7); and the closed ring plate (12) is provided with water leakage holes (13) in a ring array.
5. A butterfly type slow closing energy-saving check valve according to claim 4, characterized in that: A transfer pipe (14) is fixedly mounted on the closed ring plate (12), a connecting pipe (15) is fixedly connected to the closed ring plate (12), a micro electric control valve (16) is arranged on the connecting pipe (15), and two ends of the connecting pipe (15) extend to the inside of the transfer pipe (14) and the water outlet (102) respectively.
6. A butterfly type slow closing energy-saving check valve according to claim 4, characterized in that: A positioning cam (17) is fixedly connected inside the regulating cylinder (7), and the positioning cam (17) is used to limit the movement of the movable plug (8). Sealing rings (18) are fixedly connected inside the spherical closed cavity (5) and on both sides of the ball valve (6).