A combined electric valve

Abstract

The utility model discloses a combined electric valve, including a valve tube, the top of which is fixedly connected with an electric actuator, the inside of which is rotatably connected with a valve body, the top of which is fixedly connected with a butt-joint pipe, the top of which is fixedly connected with a round sleeve, the inner wall of which is threadedly connected with a buffer tube, the inner wall of which is slidably connected with a rubber piston, and the top of which is fixedly connected with an end plate. The utility model is provided with a through hole, a round sleeve, an annular sealing gasket, a buffer tube, a rubber piston, an end plate, a vertical rod, a telescopic spring, a vertical sleeve and an annular block, and absorbs and disperses partial pressure of the liquid through the buffering of the telescopic spring, slows down the flow rate of the liquid, and achieves the effect of protecting the valve body. At the same time, the vertical sleeve moves up and down to change the elastic force of the spring, so as to adjust different water flow pressures. The buffer tube can be rotated for disassembly operation without disassembling the valve tube, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of electric valves, in particular to a combined electric valve. Background Art

[0002] Electric valve is a device that uses electric actuator to control valve, so as to realize valve opening and closing. It is mainly composed of two parts: electric actuator and valve. The upper part is electric actuator and the lower part is valve. Electric valve is suitable for controlling liquid, gas and wind system pipelines. In the existing pipeline, when the electric valve in the pipeline is suddenly opened and closed, the water flow will generate a pressure on the valve and pipe wall, mainly the opening and closing of the valve. Because the pipe wall is smooth, the subsequent water flow quickly reaches the maximum under the action of inertia and produces a destructive effect, so it needs to be protected.

[0003] After searching, the patent document with publication number: CN214946724U discloses a combined electric valve; the medium flows through the left side of the valve tube, generating a huge instantaneous impact force, which acts on the blocking plate. The blocking plate moves to the right and pushes the guide plate. The guide plate will be impacted to push the slider. The slider presses the spring, causing the spring to deform, thereby converting the impact force generated by the medium flow into the deformation force of the spring, thereby offsetting the instantaneous impact force of the medium, thereby solving the problem that when the medium flows from one side of the valve plate to the other side, a huge impact will be generated, causing damage to the valve plate.

[0004] However, in actual use, due to the water hammer effect caused by the opening and closing of the electric valve, the buffering effect is achieved through the above structure. Since the overall structure is large and located inside the valve pipe, the electric valve needs to be disassembled and installed during maintenance, which is cumbersome. In addition, the buffering force is constant and effective adjustment cannot be made for different pipeline water pressures. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a combined electric valve.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A combined electric valve comprises a valve tube, the top of which is fixedly connected to an electric actuator, the interior of which is rotatably connected to a valve body, the top of which is fixedly connected to a docking tube, the top of which is fixedly connected to a round sleeve, the inner wall of which is threadedly connected to a buffer tube, the inner wall of which is slidably connected to a rubber piston, the top of which is fixedly connected to an end plate, and a buffer mechanism is provided inside the buffer tube.

[0008] Preferably, the buffer mechanism includes a vertical rod, the top of the end plate is fixedly connected to the bottom of the vertical rod, the outer wall of the vertical rod is sleeved with a telescopic spring, the top of the buffer tube is provided with a docking hole, the inner wall of the docking hole is threadedly connected with a vertical sleeve, the outer wall sliding sleeve of the vertical rod is provided with an annular block, the top of the annular block is in contact with the bottom of the vertical sleeve, and the telescopic spring is assisted in telescoping by setting the annular block.

[0009] Preferably, both ends of the valve pipe are fixedly connected with flanges, and the outer wall of the butt-joint pipe is provided with a plurality of through holes, and the valve pipe is fixed to the existing pipeline by arranging the flanges.

[0010] Preferably, the outer wall sleeve of the butt joint tube is provided with an annular sealing gasket, and the bottom of the buffer tube is squeezed against the top of the annular sealing gasket. The sealing between the buffer tube and the butt joint tube is increased by providing the annular sealing gasket, and the overall structure of the annular sealing gasket is matched according to the size of the butt joint sleeve.

[0011] Preferably, the top of the telescopic spring is fixedly connected to the bottom of the annular block, and the bottom of the telescopic spring is fixedly connected to the top of the end plate.

[0012] Preferably, the top of the vertical rod is located inside the vertical sleeve.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] This solution provides a through hole, a round sleeve, an annular sealing gasket, a buffer tube, a rubber piston, an end plate, a vertical rod, a telescopic spring, a vertical sleeve and annular blocks. Through the buffering of the telescopic spring, the partial pressure of the liquid is absorbed and dispersed, and the flow rate of the liquid is slowed down, thereby protecting the valve body. At the same time, the vertical sleeve moves up and down to change the elastic force of the spring, so as to adjust to different water flow pressures. The buffer tube can be rotated for disassembly operation without removing the valve pipe, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a combined electric valve proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a combined electric valve proposed by the utility model;

[0018] Figure 3A combined electric valve proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 The utility model is a partial three-dimensional structural schematic diagram of a combined electric valve.

[0020] In the figure: 1. valve pipe; 2. electric actuator; 3. valve body; 4. flange; 5. butt pipe; 6. through hole; 7. round sleeve; 8. annular sealing gasket; 9. buffer tube; 10. rubber piston; 11. end plate; 12. vertical rod; 13. telescopic spring; 14. vertical sleeve; 15. annular block. DETAILED DESCRIPTION

[0021] 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.

[0022] Depend on Figure 1-Figure 4 As shown, it involves a combined electric valve, including a valve tube 1, an electric actuator 2 is fixedly connected to the top of the valve tube 1, a valve body 3 is rotatably connected inside the valve tube 1, a driving end of the electric actuator 2 is connected to an existing valve stem, and the valve body 3 is driven to rotate by driving the valve stem, and flanges 4 are fixedly connected to both ends of the valve tube 1.

[0023] The outer wall of the butt-joint pipe 5 is provided with a plurality of through holes 6, which prevent the rubber piston 10 from clogging the port of the butt-joint pipe 5 and discharge the excess water in the buffer tube 9 into the valve tube 1. The top of the valve tube 1 is fixedly connected with the butt-joint pipe 5, and the top of the valve tube 1 is fixedly connected with a round sleeve 7, and the inner wall of the round sleeve 7 is threadedly connected with the buffer tube 9. The buffer tube 9 and the butt-joint pipe 5 are detachably installed.

[0024] An annular sealing gasket 8 is sleeved on the outer wall of the butt joint 5, the bottom of the buffer tube 9 is pressed against the top of the annular sealing gasket 8, the inner wall of the buffer tube 9 is slidably connected with a rubber piston 10, and the top of the rubber piston 10 is fixedly connected with an end plate 11. There is a certain friction between the rubber piston 10 and the buffer tube 9 when sliding, and when the telescopic spring 13 is reset, it is used as a damper to prevent the rubber piston 10 from vibrating in the buffer tube 9.

[0025] A buffer mechanism is provided inside the buffer tube 9, and the buffer mechanism includes a vertical rod 12. The top of the end plate 11 is fixedly connected to the bottom of the vertical rod 12. The outer wall of the vertical rod 12 is sleeved with a telescopic spring 13. A docking hole is provided at the top of the buffer tube 9. A vertical sleeve 14 is threadedly connected to the inner wall of the docking hole. The vertical sleeve 14 squeezes the annular block 15 downward by a threaded connection. When the vertical sleeve 14 moves upward, the annular block 15 is squeezed at the bottom of the vertical sleeve 14 by the elastic force of the telescopic spring 13 and moves with the vertical sleeve 14. The maximum elongation of the telescopic spring 13 is greater than the height of the buffer tube 9.

[0026] The outer wall sliding sleeve of the vertical rod 12 is provided with an annular block 15, the top of the annular block 15 contacts the bottom of the vertical sleeve 14, and the contact position is coated with lubricating oil. The top of the telescopic spring 13 is fixedly connected to the bottom of the annular block 15, and the bottom of the telescopic spring 13 is fixedly connected to the top of the end plate 11. The top of the vertical rod 12 is located inside the vertical sleeve 14.

[0027] Working principle: When in use, the flanges 4 at both ends of the valve tube 1 are connected to the existing pipeline, and the valve body 3 is driven by the electric actuator 2 to drive the valve body 3 to rotate to achieve the effect of opening and closing. During the opening and closing process, the water flow in the pipeline generates a large pressure under the action of inertia. When passing through the valve tube 1, part of the water flows along the docking tube 5 into the buffer tube 9, and the water pressure drives the rubber piston 10 to move upward in the buffer tube 9. The movement of the rubber piston 10 drives the end plate 11 and the vertical rod 12 to move upward. The vertical rod 12 moves upward to squeeze the telescopic spring 13 to contract. At this time, the telescopic spring 13 is used to buffer and absorb and distribute the water. The partial pressure of the dispersed liquid is slowed down, so as to protect the valve body 3; when adjusting the elastic force of the telescopic spring 13, the vertical sleeve 14 is rotated to make it move up and down through the buffer tube 9. The vertical sleeve 14 moves up and down through the annular block 15 to drive the telescopic spring 13 to expand and contract, thereby changing its elastic force and changing the upward stroke of the end plate 11 and the rubber piston 10, so as to adjust the pressure of different water flows. During subsequent maintenance, the water in the pipeline is drained or the liquid is stopped from being transported. The buffer tube 9 is rotated through the connecting tube 5 and removed from the valve tube 1. The structure in the buffer tube 9 can be replaced without disassembling the valve tube 1, and the operation is simple.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A combined electric valve, comprising a valve tube (1), characterized in that: The top of the valve tube (1) is fixedly connected to an electric actuator (2), the inside of the valve tube (1) is rotatably connected to a valve body (3), the top of the valve tube (1) is fixedly connected to a butt joint tube (5), the top of the valve tube (1) is fixedly connected to a round sleeve (7), the inner wall of the round sleeve (7) is threadedly connected to a buffer tube (9), the inner wall of the buffer tube (9) is slidably connected to a rubber piston (10), the top of the rubber piston (10) is fixedly connected to an end plate (11), and a buffer mechanism is provided inside the buffer tube (9).

2. A combined electric valve according to claim 1, characterized in that: The buffer mechanism comprises a vertical rod (12), the top of the end plate (11) is fixedly connected to the bottom of the vertical rod (12), the outer wall of the vertical rod (12) is sleeved with a telescopic spring (13), the top of the buffer tube (9) is provided with a docking hole, the inner wall of the docking hole is threadedly connected with a vertical sleeve (14), the outer wall of the vertical rod (12) is slidably sleeved with an annular block (15), and the top of the annular block (15) is in contact with the bottom of the vertical sleeve (14).

3. A combined electric valve according to claim 1, characterized in that: Both ends of the valve pipe (1) are fixedly connected with flanges (4), and the outer wall of the butt-joint pipe (5) is provided with a plurality of through holes (6).

4. A combined electric valve according to claim 1, characterized in that: An annular sealing gasket (8) is sleeved on the outer wall of the butt-joint pipe (5), and the bottom of the buffer pipe (9) is pressed against the top of the annular sealing gasket (8).

5. A combined electric valve according to claim 2, characterized in that: The top of the telescopic spring (13) is fixedly connected to the bottom of the annular block (15), and the bottom of the telescopic spring (13) is fixedly connected to the top of the end plate (11).

6. A combined electric valve according to claim 2, characterized in that: The top of the vertical rod (12) is located inside the vertical sleeve (14).

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