Automatic opening and closing quick-closing valve applied to synthetic compressor

Abstract

The utility model relates to the technical field of valves, in particular to an automatic opening and closing quick-closing valve applied to a synthetic compressor, which comprises a valve body, a steam inlet, a steam outlet, a valve rod, a valve core, a valve cover, an oil cylinder mechanism and a control mechanism, the oil cylinder mechanism comprises a cylinder body, a piston and a spring, the control mechanism comprises a quick-closing valve and a control element, and the quick-closing valve comprises an oil inlet and an oil outlet. The control element is an electromagnetic valve, a pressure cavity is formed between the piston and the valve cover, an oil inlet and an oil outlet of the quick-closing valve are communicated with the pressure cavity, and a sealing piece is arranged on the valve body. The operation time is reduced; hydraulic oil circulates among the electromagnetic valve, the quick-closing valve and the pressure cavity, an oil return pipeline is short, and the safety is higher; the whole structure is simple, disassembly is convenient, and parts are convenient to clean and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an automatic opening and closing quick-closing valve used for a synthetic compressor. Background Art

[0002] The exhaust quick-closing valve used in existing synthetic gas compressors is usually opened manually by a heavy hammer. Its working principle is manual operation and hydraulic control. 0.8MPA oil pressure enters through the oil inlet pipe, pushing the cylinder piston upward. While the valve stem moves up with the piston, it drives the valve disc to move upward. The valve is opened and the lower valve disc is pushed downward at the same time. The heavy hammer is lifted up. The heavy hammer can be used to adjust the opening force of the valve. The other pipelines are the valve oil drain ports. When the valve is closed, as long as the oil pressure at the upper oil inlet is removed, the valve will be quickly closed under the action of the spring, and the incoming steam cannot reach the steam outlet.

[0003] The current defects are: 1. Manual control of opening and closing, low degree of automation, and long operation time; 2. Compact structure, difficult to disassemble, after long-term operation, the seals are prone to aging and oil leakage; 3. The oil return pipeline is long, which is inconvenient for installation and maintenance and there is a certain risk of leakage.

[0004] CN112503212A discloses a quick-closing valve starter with a quick-opening structure, including a housing, a spring and a first retaining ring, a supporting mechanism is arranged inside the housing, an oil return port is arranged on the left end surface of the housing, a sliding valve is arranged above the spring, a sealing mechanism is arranged above the first retaining ring, a push rod is fixed above the sealing mechanism, a cover body is installed above the push rod, a handle is arranged above the second screw, a holding mechanism is fixed above the screw, a quick-closing oil inlet is arranged above the oil return port, a starter oil port is arranged below the quick-closing oil outlet, and a throttling screw is installed behind the starter oil port. This patent adopts manual operation for control, which has the above-mentioned problems. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a quick-closing valve for automatic opening and closing of a synthetic compressor, which avoids the problems of manual operation and long operation time.

[0006] To solve the above problems, the technical solution of the utility model is as follows: a quick-closing valve for automatic opening and closing of a synthetic compressor, comprising a valve body, a steam inlet and a steam outlet are arranged on the valve body, a valve stem is arranged in the valve body, a valve core is arranged at one end of the valve stem, a valve cover is arranged at the upper end of the valve body, a cylinder mechanism connected to the valve stem and controlling the up and down movement of the valve stem is arranged at the upper end of the valve cover, a control mechanism for controlling the oil inlet and oil leakage of the cylinder mechanism is connected to one side of the cylinder mechanism, the cylinder mechanism comprises a cylinder body connected to the valve cover, a piston is arranged in the cylinder body, the valve stem passes through the valve cover and is connected to the piston, and a spring is arranged at the upper end of the piston.

[0007] Furthermore, the control mechanism includes a quick-closing valve connected to the cylinder body, and a control element connected to the quick-closing valve for controlling oil inlet and oil outlet of the quick-closing valve, and the quick-closing valve includes an oil inlet and an oil outlet.

[0008] Furthermore, the control element is a solenoid valve.

[0009] Furthermore, a pressure chamber is formed between the piston and the valve cover, and the oil inlet and the oil outlet of the quick-closing valve are connected to the pressure chamber.

[0010] Furthermore, a bracket for protecting the valve stem is provided between the valve cover and the valve body.

[0011] Furthermore, a sealing member adapted to the valve stem and used to prevent steam leakage is provided on the valve body.

[0012] Furthermore, there are two oil outlets.

[0013] Furthermore, the piston is adapted to the inner wall of the cylinder.

[0014] Furthermore, the solenoid valve is a two-position five-way solenoid valve.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the solenoid valve, the quick-closing valve and the spring are arranged to control the automatic oil inlet and oil drain of the pressure chamber, thereby realizing the automatic control of the quick-closing valve and reducing the operation time; the hydraulic oil flows between the solenoid valve, the quick-closing valve and the pressure chamber, the return oil pipeline is shorter and the safety is higher; the overall structure is simple and the disassembly is convenient, and it is easy to clean and replace parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the solenoid valve of the utility model.

[0018] Explanation of the reference numerals: 1 valve body, 2 steam inlet, 3 steam outlet, 4 valve stem, 5 valve core, 6 valve cover, 7 cylinder body, 8 piston, 9 spring, 10 quick closing valve, 11 solenoid valve, 12 inlet, 13 outlet, 14 pressure chamber, 15 bracket, 16 sealing member. DETAILED DESCRIPTION

[0019] like Figure 1 , Figure 2 As shown, a quick-closing valve for automatic opening and closing of a synthetic compressor comprises a valve body 1, a steam inlet 2 and a steam outlet 3 are arranged on the valve body 1, a valve stem 4 is arranged in the valve body 1, a valve core 5 is arranged at one end of the valve stem 4, a valve cover 6 is arranged at the upper end of the valve body 1, a cylinder mechanism connected with the valve stem 4 and controlling the up and down movement of the valve stem 4 is arranged at the upper end of the valve cover 6, a control mechanism for controlling the oil inlet and oil discharge of the cylinder mechanism is connected to one side of the cylinder mechanism, the cylinder mechanism comprises a cylinder body 7 connected with the valve cover 6, a piston 8 is arranged in the cylinder body 7, the valve stem 4 passes through the valve cover 6 and is connected with the piston 8, a spring 9 is arranged at the upper end of the piston 8, and the piston 8 is adapted to the inner wall of the cylinder body 7 to prevent hydraulic oil from penetrating into the cavity where the spring 9 is located.

[0020] The control mechanism includes a quick-closing valve 10 connected to the cylinder body 7, and a control element connected to the quick-closing valve 10 for controlling the oil inlet and oil drain of the quick-closing valve 10. The control element is a solenoid valve 11, and a two-position five-way solenoid valve can be used. The quick-closing valve 10 includes an oil inlet and an oil outlet. Two oil outlets are provided, which are connected to the inlet 12 and the outlet 13 of the two-position five-way solenoid valve. More than two oil outlets can also be used to ensure that the hydraulic oil is discharged quickly.

[0021] A pressure chamber 14 is formed between the piston 8 and the valve cover 6 , and an oil inlet and an oil outlet of the quick-closing valve 10 are connected to the pressure chamber 14 .

[0022] A bracket 15 for protecting the valve stem 4 is provided between the valve cover 6 and the valve body 1 , and a sealing member 16 adapted to the valve stem 4 for preventing steam leakage is provided on the valve body 1 .

[0023] When in use, first connect to an oil pressure of about 0.8MPa, the solenoid valve 11 is not energized, the inlet 12 is opened, the outlet 13 is closed, the hydraulic oil enters the oil inlet of the quick-closing valve 10, and then enters the pressure chamber 14 through the inlet 12 of the solenoid valve 11. The pressure in the pressure chamber 14 increases, squeezing the piston 8, compressing the spring 9, driving the valve stem 4 and the valve core 5 to move upward, the steam inlet 2 is connected to the steam outlet 3, and the quick-closing valve is opened; the solenoid valve 11 is energized, the inlet 12 is closed, the outlet 13 is opened, the piston 8 is pressed down by the spring 9, driving the valve stem 4 and the valve core 5 downward, the hydraulic oil in the pressure chamber 14 is quickly discharged from the pressure chamber 14 through the oil outlet of the quick-closing valve 10, the steam inlet 2 and the steam outlet 3 are disconnected, ensuring that the quick-closing time is less than 1S, and the whole process realizes the automatic opening and closing of the quick-closing valve by controlling the solenoid valve 11, without the need for manual operation of the hand wheel, realizing automatic operation.

[0024] The above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An automatic opening and closing quick-closing valve for a synthetic compressor, comprising a valve body, a steam inlet and a steam outlet are arranged on the valve body, a valve stem is arranged in the valve body, and a valve core is arranged at one end of the valve stem, characterized in that: A valve cover is provided at the upper end of the valve body, and a cylinder mechanism connected to the valve stem and controlling the up and down movement of the valve stem is provided at the upper end of the valve cover. A control mechanism for controlling the oil inlet and oil outlet of the cylinder mechanism is connected to one side of the cylinder mechanism. The cylinder mechanism includes a cylinder body connected to the valve cover, a piston is provided in the cylinder body, the valve stem passes through the valve cover and is connected to the piston, and a spring is provided at the upper end of the piston; The control mechanism includes a quick-closing valve connected to the cylinder body, and a control element connected to the quick-closing valve for controlling the oil inlet and oil outlet of the quick-closing valve, wherein the quick-closing valve includes an oil inlet and an oil outlet; There are two oil outlets.

2. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 1 is characterized in that: The control element is a solenoid valve.

3. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 2 is characterized in that: A pressure chamber is formed between the piston and the valve cover, and the oil inlet and the oil outlet of the quick-closing valve are connected to the pressure chamber.

4. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 3 is characterized in that: A bracket for protecting the valve stem is provided between the valve cover and the valve body.

5. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 4 is characterized in that: A sealing member matched with the valve stem and used to prevent steam leakage is arranged on the valve body.

6. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 5, characterized in that: The piston is matched with the inner wall of the cylinder.

7. The automatic opening and closing quick-closing valve used in a synthetic compressor according to claim 6 is characterized in that: The solenoid valve is a two-position five-way solenoid valve.

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