High-pressure pipeline valve plate type check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a high-pressure pipeline valve plate type check valve which comprises two shells, connecting plates and connecting bolts are arranged on the two sides of each shell, screw holes matched with the connecting bolts are formed in the two connecting plates and the shells, a valve element is arranged between the two shells, and the valve element is connected with the two shells. The valve element is composed of a valve seat, a valve cover, a valve plate, a limiting bolt, a first cylindrical pin, a spring and a second cylindrical pin, the valve plate is made of polyether-ether-ketone, and the valve element is of a compressor open type air valve structure; the valve element is of a compressor open type air valve structure, the valve plate is an impact-resistant non-metal valve plate and is made of polyether-ether-ketone, the compressor air valve is applied to the high-pressure pipeline check valve element, due to the fact that the pipeline opening time is long, pulsation high-frequency opening and closing of the compressor air valve are not needed, the service life of the check valve can be remarkably prolonged, and meanwhile the check valve can be installed at any angle. The valve has the advantages of low operation noise, timely opening and closing, small pressure loss and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a high-pressure pipeline valve disc type check valve. Background Art

[0002] The final outlet of the high-pressure pipeline of a traditional compressor is equipped with a check valve to prevent gas backflow. There are two types of check valves: lift check valve and swing check valve. The lift check valve has a large pressure loss, loud noise during operation, and the valve stem is easily damaged, which can easily lead to failure. The swing check valve also has the problems of loud noise during operation, large impact force, easy damage to the valve plate, and easy leakage. Therefore, a high-pressure pipeline valve plate check valve is proposed to reduce noise, reduce pressure loss, and extend service life. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a high-pressure pipeline valve disc type check valve.

[0004] The technical solution adopted by the utility model to solve its technical problems is a high-pressure pipeline valve plate check valve, including a shell, two of which are provided, and connecting plates and connecting bolts are provided on both sides of the shell, and screw holes adapted to the connecting bolts are provided on the two connecting plates and the shell, and a valve core is provided between the two shells, and the valve core is composed of a valve seat, a valve cover, a valve plate, a limit bolt, a first cylindrical pin, a spring and a second cylindrical pin. The material of the valve plate is polyetheretherketone, and the valve core is a compressor open air valve structure.

[0005] By adopting the above technical solution, the valve core is a compressor open valve structure, the valve plate adopts an impact-resistant non-metallic valve plate, and the material is polyetheretherketone. The compressor valve is applied to the high-pressure pipeline check valve core. Since the pipeline is open for a long time, there is no need for the pulsating high-frequency opening and closing of the compressor valve, and the service life of the check valve can be significantly improved. At the same time, it can be installed at any angle, with the advantages of low operating noise, timely opening and closing, and small pressure loss.

[0006] Specifically, flanges are provided on both sides of the valve core, two threaded columns are provided on both sides of the shell, four through holes adapted to the threaded columns are opened on the two flanges, and two first nuts are provided on the four threaded columns.

[0007] By adopting the above technical solution, the arrangement of the flange, the threaded column and the first nut can improve the strength of the housing and the valve core, and facilitate connection with external pipelines.

[0008] Specifically, two sealing rings are provided between the two flanges.

[0009] By adopting the above technical solution and setting the sealing ring, the overall sealing performance is improved.

[0010] Specifically, gaskets are provided on both sides of the valve core.

[0011] By adopting the above technical solution and setting the gasket, the valve core can be protected.

[0012] Specifically, the limiting bolt is provided with a second nut and a third nut, and the second nut is located between the third nut.

[0013] By adopting the above technical solution and arranging the second nut and the third nut, the stability of the valve seat and the valve cover is improved.

[0014] Beneficial effects of the utility model:

[0015] (1) The high-pressure pipeline valve plate type check valve described in the utility model has a valve core of a compressor open air valve structure, and the valve plate adopts an impact-resistant non-metallic valve plate made of polyetheretherketone. The compressor air valve is applied to the high-pressure pipeline check valve valve core. Since the pipeline is open for a long time, there is no need for the pulsating high-frequency opening and closing of the compressor air valve, and the service life of the check valve can be significantly improved. At the same time, it can be installed at any angle and has the advantages of low operating noise, timely opening and closing, and small pressure loss.

[0016] (2) The high-pressure pipeline valve plate check valve described in the utility model has a sealing ring that improves the overall sealing performance, a gasket that protects the valve core, and a second nut and a third nut that improve the stability of the valve seat and the valve cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 It is a cross-sectional view of the valve core of the present utility model.

[0020] In the figure: 1. Housing; 2. Threaded column; 20. Valve cover; 3. First nut; 30. Valve plate; 4. Connecting plate; 40. Limit bolt; 5. Washer; 50. Second nut; 6. Sealing ring; 60. Third nut; 7. Flange; 70. First cylindrical pin; 8. Valve core; 80. Spring; 81. Valve seat; 9. Connecting bolt; 90. Second cylindrical pin. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] In order to reduce noise, reduce pressure loss and extend service life, as an embodiment of the present invention, Figure 1 、 Figure 2 As shown, the high-pressure pipeline valve plate check valve described in the utility model includes a shell 1, and there are two shells 1. A connecting plate 4 and a connecting bolt 9 are provided on both sides of the shell 1. The two connecting plates 4 and the shell 1 are provided with screw holes adapted to the connecting bolts 9. A valve core 8 is provided between the two shells 1, and the valve core 8 is composed of a valve seat 81, a valve cover 20, a valve plate 30, a limit bolt 40, a first cylindrical pin 70, a spring 80 and a second cylindrical pin 90. The material of the valve plate 30 is polyetheretherketone, and the valve core 8 is a compressor open air valve structure.

[0023] When in use, the valve core 8 is a compressor open air valve structure, and the valve plate 30 adopts an impact-resistant non-metallic valve plate made of polyetheretherketone. The compressor air valve is applied to the high-pressure pipeline check valve core 8. Since the pipeline is open for a long time, there is no need for the pulsating high-frequency opening and closing of the compressor air valve, and the service life of the check valve can be significantly improved. At the same time, it can be installed at any angle, with the advantages of low operating noise, timely opening and closing, and small pressure loss.

[0024] To improve the strength, for example, Figure 1 As shown, flanges 7 are provided on both sides of the valve core 8, two threaded columns 2 are provided on both sides of the shell 1, four through holes adapted to the threaded columns 2 are opened on the two flanges 7, and two first nuts 3 are provided on the four threaded columns 2.

[0025] In order to improve the sealing performance, for example, Figure 1 As shown, two sealing rings 6 are provided between the two flanges 7 .

[0026] In order to protect the valve core 8, for example, Figure 1 As shown, gaskets 5 are provided on both sides of the valve core 8.

[0027] In order to improve the stability of the valve seat 81 and the valve cover 20, for example, Figure 2 As shown, the limiting bolt 40 is provided with a second nut 50 and a third nut 60 , and the second nut 50 is located between the third nut 60 and 20 .

[0028] When the utility model is in use, after the check valve is assembled, the gas flow direction arrow and the Class1500 DN150 code mark are printed on the housing 1. The free height difference of the spring 80 in the same class and name gas valve shall not be greater than 0.2mm;

[0029] The valve core 8 is a compressor open valve structure, and the valve plate 30 adopts an impact-resistant non-metallic valve plate made of polyetheretherketone. The compressor valve is applied to the high-pressure pipeline check valve core 8. Since the pipeline is open for a long time, there is no need for the pulsating high-frequency opening and closing of the compressor valve, and the service life of the check valve can be significantly improved. At the same time, it can be installed at any angle, with the advantages of low operating noise, timely opening and closing, and small pressure loss.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions in the specification are only for the purpose of illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and such changes and improvements fall within the scope of protection claimed by the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents. Any matters not described in detail in the present invention belong to the prior art known to those skilled in the art.

Claims

1. High-pressure pipeline valve disc check valve, characterized by: The invention comprises a housing (1), wherein the housing (1) is provided with two, a connecting plate (4) and a connecting bolt (9) are provided on both sides of the housing (1), screw holes adapted to the connecting bolt (9) are provided on the two connecting plates (4) and the housing (1), a valve core (8) is provided between the two housings (1), and the valve core (8) is composed of a valve seat (81), a valve cover (20), a valve plate (30), a limiting bolt (40), a first cylindrical pin (70), a spring (80) and a second cylindrical pin (81). The valve plate (30) is made of polyetheretherketone (PEEK), the valve core (8) is a compressor open valve structure, flanges (7) are provided on both sides of the valve core (8), two threaded columns (2) are provided on both sides of the housing (1), four through holes adapted to the threaded columns (2) are provided on the two flanges (7), two first nuts (3) are provided on the four threaded columns (2), and two sealing rings (6) are provided between the two flanges (7).

2. The high-pressure pipeline disc check valve according to claim 1, characterized in that: Gaskets (5) are provided on both sides of the valve core (8).

3. The high-pressure pipeline disc check valve according to claim 1, characterized in that: The limiting bolt (40) is provided with a second nut (50) and a third nut (60), and the second nut (50) is located between the third nut (60) and (20).

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