Execution device for leakage valve

Abstract

An executing device for a leakage valve comprises an executing device body installed on the leakage valve, the executing device body comprises an oil cylinder assembly and a spring cylinder which are arranged on the two sides of the leakage valve, the oil cylinder assembly comprises a control block, an oil cylinder body and a proportional valve, the control block and the proportional valve are both arranged on the oil cylinder body, an oil channel is formed in the oil cylinder body, and the spring cylinder is arranged on the oil cylinder body. The control block and the proportional valve are arranged on the oil cylinder body, the control block is directly installed on the oil cylinder body, and therefore the sensing distance of the control block can be shortened, the stability of control signals is improved, the response speed is increased, and the oil cylinder is convenient to use. And the proportional valve can control the flowing direction of oil in the oil duct.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an actuator for a leaking valve. Background Art

[0002] The controller of the existing valve is usually installed in a position far away from the actuator, which will affect the stability of signal transmission. The valve cannot obtain the signal from the control system in the first time, which delays the quick opening and closing of the valve. Summary of the invention

[0003] In view of this, the utility model provides an actuator for a leakage valve.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An actuator for a leakage valve comprises an actuator body mounted on the leakage valve, the actuator body comprising an oil cylinder assembly and a spring cylinder arranged on both sides of the leakage valve, the oil cylinder assembly comprising a control block, an oil cylinder body and a proportional valve, the control block and the proportional valve are both arranged on the oil cylinder body, an oil passage is opened in the oil cylinder body, the proportional valve is connected to the oil passage, and the proportional valve controls the on-off of the oil passage.

[0006] Preferably, the cylinder body has a control part and an actuating part, the oil passage is opened on the control part, the proportional valve is arranged on the control part, the control part and the actuating part are communicated with each other, a first oil inlet is opened on the control part, a second oil inlet is opened on the actuating part, an oil outlet connected to the second oil inlet is opened on the control part, a connecting pipe is arranged between the oil outlet and the second oil inlet, and the connecting pipe connects the oil outlet and the second oil inlet.

[0007] Preferably, a piston chamber is formed in the action part, the second oil inlet is connected to the piston chamber, a piston and a piston rod are arranged in the piston chamber, the piston is sleeved on the piston rod, the piston divides the piston chamber into a first piston chamber and a second piston chamber, the second oil inlet is connected to the second piston chamber, and the first oil inlet is connected to the first piston chamber through an oil channel.

[0008] Preferably, the oil passage has an oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is connected to the action part, the second oil outlet is connected to the oil outlet, the oil inlet is connected to the first oil inlet, and the proportional valve is arranged between the first oil outlet and the second oil outlet.

[0009] Preferably, the leakage valve includes a valve body, a main valve stem and a butterfly plate, the main valve stem is respectively connected to the butterfly plate and the actuator, a plurality of fine-tuning holes and medium holes are provided on the butterfly plate, a small butterfly plate is arranged in the medium through hole, and a ring gap is provided between the small butterfly plate and the medium through hole, a small butterfly plate actuator is arranged at the bottom of the valve body, an auxiliary valve stem is arranged between the small butterfly plate actuator and the small butterfly plate, and the small butterfly plate is connected to the small butterfly plate actuator through the auxiliary valve stem.

[0010] Preferably, the fine-tuning through holes are symmetrically arranged on both sides of the butterfly plate with the axial direction of the main valve stem as the center line.

[0011] The beneficial effect of the utility model is that by arranging a control block and a proportional valve on the cylinder body, the control block is directly installed on the cylinder body, which can shorten the sensing distance of the control block, thereby improving the stability of the control signal and increasing the response speed, and the proportional valve can control the flow direction of the oil in the oil channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model 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, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Attached Figure 1 It is a top view of the utility model;

[0014] Attached Figure 2 It is a schematic diagram of the oil cylinder assembly;

[0015] Attached Figure 3 For attachment Figure 1 Section view at AA in the figure. DETAILED DESCRIPTION

[0016] 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.

[0017] The utility model will be further described below in conjunction with the accompanying drawings of the specification.

[0018] The utility model provides the following technical solutions:

[0019] As attached Figure 1-3As shown, the utility model discloses an actuator for a leakage valve, including an actuator body 2 installed on the leakage valve 1, the actuator body 2 includes a cylinder assembly 3 and a spring cylinder 4 arranged on both sides of the leakage valve 1, the cylinder assembly 3 includes a control block 5, a cylinder body 6 and a proportional valve 7, the control block 5 and the proportional valve 7 are both arranged on the cylinder body 6, an oil passage 8 is provided in the cylinder body 6, the proportional valve 7 is connected to the oil passage 8, and the proportional valve 7 controls the on-off of the oil passage 8. Specifically, in the present design, by arranging the control block 5 and the proportional valve 7 on the cylinder body 6, the control block 5 is directly installed on the cylinder body 6, the sensing distance of the control block 5 can be shortened, thereby improving the stability of the control signal and improving the response speed, and the proportional valve 7 can control the flow direction of the oil in the oil passage 8.

[0020] Furthermore, the cylinder body 6 has a control part 9 and an action part 10, the oil passage 8 is opened on the control part 9, the proportional valve 7 is arranged on the control part 9, the control part 9 and the action part 10 are connected, a first oil inlet 11 is opened on the control part 9, a second oil inlet 12 is opened on the action part 10, an oil outlet 13 connected to the second oil inlet 12 is opened on the control part 9, a connecting pipe 14 is arranged between the oil outlet 13 and the second oil inlet 12, and the connecting pipe 14 connects the oil outlet 13 and the second oil inlet 12.

[0021] Furthermore, a piston chamber 15 is formed in the action part 10, the second oil inlet 12 is connected to the piston chamber 15, a piston 16 and a piston rod 17 are arranged in the piston chamber 15, the piston 16 is sleeved on the piston rod 17, the piston 16 divides the piston chamber 15 into a first piston chamber 15 and a second piston chamber 15, the second oil inlet 12 is connected to the second piston chamber 15, and the first oil inlet 11 is connected to the first piston chamber 15 through the oil passage 8. Specifically, in this embodiment, oil is introduced into the first piston chamber 15 through the first oil inlet 11, and the flow direction of the oil in the oil passage 8 is controlled by the proportional valve 7, so that the oil can enter the second piston chamber 15, thereby driving the piston 16 to move in the piston chamber 15, and the piston rod 17 extends or retracts with the movement of the piston 16, thereby realizing the switch control of the leakage valve 1. This design has a simple structure, is easy to operate, and can realize accurate control of the leakage valve 1.

[0022] Further, the oil channel 8 has an oil inlet 18, a first oil outlet 19 and a second oil outlet 20, the first oil outlet 19 is connected to the action part 10, the second oil outlet 20 is connected to the oil outlet 13, the oil inlet 18 is connected to the first oil inlet 11, and the proportional valve 7 is arranged between the first oil outlet 19 and the second oil outlet 20. Specifically, in this embodiment, the oil inlet 18 serves as the entrance for the oil to enter the oil channel 8, the first oil outlet 19 is used to introduce the oil into the action part 10 to drive the movement of the piston 16, and the second oil outlet 20 is connected to the oil outlet 13, so that the oil can flow back to the oil tank or other oil recovery devices. The proportional valve 7 is arranged between the first oil outlet 19 and the second oil outlet 20, which can effectively control the flow direction of the oil in the oil channel 8 and realize the precise control of the switch of the leakage valve 1. In addition, by adjusting the opening degree and opening time of the proportional valve 7, the switching speed and switching force of the leakage valve 1 can also be adjusted to meet different working requirements.

[0023] Furthermore, the leakage valve 1 includes a valve body 21, a main valve stem 22 and a butterfly plate 23, the main valve stem 22 is respectively connected to the butterfly plate 23 and the actuator body 2, a plurality of fine-tuning holes 24 and a medium through hole 25 are opened on the butterfly plate 23, a small butterfly plate 28 is arranged in the medium through hole 25, and an annular gap 26 is provided between the small butterfly plate 28 and the medium through hole 25, a small butterfly plate actuator 27 is arranged at the bottom of the valve body 21, an auxiliary valve stem is arranged between the small butterfly plate actuator 27 and the small butterfly plate 28, and the small butterfly plate 28 is connected to the small butterfly plate actuator 27 through the auxiliary valve stem. Specifically, in this embodiment, in order to ensure the minimum flow requirement of the system when the large butterfly plate 23 and the small butterfly plate 28 are fully closed, an annular gap 26 is set between the small butterfly plate 28 and the inner wall of the flow regulating hole to control the flow. A slight change in the gap has a great influence on the flow fluctuation. In order to more accurately control the minimum flow requirement required by the system, a fine-tuning through hole 24 is opened on the large butterfly plate 23 to achieve more accurate flow regulation.

[0024] Furthermore, the fine-tuning through hole 24 is symmetrically arranged on both sides of the butterfly plate 23 with the axial direction of the main valve stem 22 as the center line.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An actuator for a leakage valve, comprising an actuator body mounted on the leakage valve, the actuator body comprising a cylinder assembly and a spring cylinder arranged on both sides of the leakage valve, characterized in that: The oil cylinder assembly comprises a control block, an oil cylinder body and a proportional valve. The control block and the proportional valve are both arranged on the oil cylinder body. An oil passage is provided in the oil cylinder body. The proportional valve is connected to the oil passage. The proportional valve controls the on-off of the oil passage.

2. The leak valve actuator according to claim 1, characterized in that: The cylinder body includes a control part and an action part, the oil passage is opened on the control part, the proportional valve is arranged on the control part, the control part and the action part are communicated with each other, a first oil inlet is opened on the control part, a second oil inlet is opened on the action part, an oil outlet connected to the second oil inlet is opened on the control part, a connecting pipe is arranged between the oil outlet and the second oil inlet, and the connecting pipe connects the oil outlet and the second oil inlet.

3. The leak valve actuator according to claim 2, characterized in that: A piston chamber is formed in the action part, the second oil inlet is connected to the piston chamber, a piston and a piston rod are arranged in the piston chamber, the piston is sleeved on the piston rod, the piston divides the piston chamber into a first piston chamber and a second piston chamber, the second oil inlet is connected to the second piston chamber, and the first oil inlet is connected to the first piston chamber through an oil channel.

4. The actuator for leaky valve according to claim 2, characterized in that: The oil passage comprises an oil inlet, a first oil outlet and a second oil outlet, the first oil outlet is connected to the action part, the second oil outlet is connected to the oil outlet, the oil inlet is connected to the first oil inlet, and the proportional valve is arranged between the first oil outlet and the second oil outlet.

5. The leak valve actuator according to claim 1, characterized in that: The leakage valve includes a valve body, a main valve stem and a butterfly plate, the main valve stem is respectively connected to the butterfly plate and the actuator, a plurality of fine-tuning holes and medium holes are provided on the butterfly plate, a small butterfly plate is arranged in the medium through hole, and a ring gap is provided between the small butterfly plate and the medium through hole, a small butterfly plate actuator is arranged at the bottom of the valve body, an auxiliary valve stem is arranged between the small butterfly plate actuator and the small butterfly plate, and the small butterfly plate is connected to the small butterfly plate actuator through the auxiliary valve stem.

6. The actuator for leaky valve according to claim 5, characterized in that: The fine-tuning through holes are symmetrically arranged on both sides of the butterfly plate with the axial direction of the main valve stem as the center line.

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