Scouring-free regulating valve

Abstract

The utility model relates to the technical field of regulating valves, in particular to a washing-free regulating valve. Comprising a valve body, a valve element assembly, a valve seat and a pull rod. A valve seat and a valve element assembly are arranged in the valve body. The valve element assembly is located above the valve seat and comprises a valve element and a sleeve. The valve core is divided into two parts, namely an upper plug core and a lower filter core; the plug core is a solid cylinder, and the bottom of the plug core is arc-shaped; external threads are arranged on the outer wall of the plug core; the filter element is a hollow cylinder, and filter holes are formed in the outer wall of the filter element; internal threads are arranged at the top of the inner surface of the filter element; the sleeve is located on the top of the valve body. A silica gel doctor blade is arranged in the sleeve; according to the regulating valve, the silica gel scraper and the filter element are additionally arranged, the scraper in the sleeve can clean the surface of the valve element in the vertical moving process of the valve element, the cleanliness of main components in the regulating valve is kept, the sealing performance of the valve element is guaranteed, the filter element can simply filter media flowing in the valve, and pollution of particle dirt in the media to the plug element is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a flushing-free regulating valve. Background Art

[0002] Regulating valve, also known as control valve, is the final control element in the field of industrial automation process control, which changes the process parameters such as medium flow, pressure, temperature, liquid level, etc. by receiving the control signal output by the regulating control unit and using power operation. It is generally composed of an actuator and a valve, and is suitable for air, water, steam, various corrosive media, mud, oil and other media.

[0003] The current traditional regulating valve has a relatively simple structure, and during use, the medium flushes the valve core, causing the valve core component to be easily worn. In addition, the surface of the regulating valve core is usually attached with suspended particles or other contaminants in the medium, resulting in a poor sealing effect. Utility Model Content

[0004] The purpose of the present application is to provide a flush-free regulating valve, aiming to solve the problems in the prior art.

[0005] The embodiment of the present application provides a flush-free regulating valve, including a valve body, a valve core assembly, a valve seat and a pull rod; a valve seat and a valve core assembly are arranged in the valve body; a valve seat gasket is arranged at the bottom of the valve seat; the valve core assembly is located above the valve seat, including a valve core and a sleeve; the valve core is divided into two parts, an upper plugging core and a lower filter core; the plugging core is a solid cylinder with an arc-shaped bottom; an external thread is arranged on the outer wall of the plugging core; the filter core is a hollow cylinder, and filter holes are arranged on the outer wall of the filter core; an internal thread is arranged on the top of the inner surface of the filter core; the plugging core and the filter core are connected by threads; the sleeve is located at the top of the valve body, and a silicone scraper is arranged in the sleeve; an upper valve cover is arranged on the upper part of the valve body; a gasket is arranged between the upper valve cover and the valve body; the top of the valve core is connected to the pull rod, and the top of the pull rod is provided with a handle.

[0006] Furthermore, the upper valve cover is connected to the valve body via a fixing bolt, a hexagonal nut is provided on the top of the fixing bolt, and a gasket is provided between the hexagonal nut and the upper valve cover.

[0007] Furthermore, a sealing filler is provided between the sleeve and the valve body.

[0008] Furthermore, the handle is connected to the pull rod through a screw, and a packing gland is provided on the top of the upper valve cover; the packing gland is connected to the upper valve cover through a pressure plate bolt.

[0009] Furthermore, a filler stopper is provided outside the pull rod.

[0010] The beneficial effects of the utility model are as follows: the regulating valve adopts a new valve core component. A silicone scraper and a filter core are added. The scraper in the sleeve can clean the surface of the valve core during the up and down movement of the valve core, maintain the cleanliness of the main components inside the regulating valve, and keep the regulating valve in good sealing; the filter core can simply filter the medium flowing in the valve, reduce the pollution of the particle dirt in the medium to the plug core, and the medium flow direction of the utility model is low in and high out, which effectively reduces the scouring of the flowing medium on the valve core component. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the overall structure diagram of the utility model.

[0012] Figure 2 This is a schematic diagram of the valve core structure.

[0013] In the figure:

[0014] 1. Valve body; 2. Filter element; 20. Internal thread; 21. Filter hole; 3. Plug core; 30. External thread; 4. Sealing packing; 5. Sleeve; 6. Silicone scraper; 7. Pull rod; 8. Packing block; 9. Upper valve cover; 10. Fixing bolt; 11. Washer; 12. Hexagonal nut; 13. Packing gland; 14. Pressure plate bolt; 15. Handle; 16. Valve seat; 17. Valve seat gasket; 18. Valve cover gasket. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1 and Figure 2The flush-free regulating valve shown in the figure comprises a valve body 1, a valve core assembly, a valve seat 16 and a pull rod 7; the valve body 1 is provided with a valve seat 16 and a valve core assembly; a valve seat gasket 17 is provided at the bottom of the valve seat 16; the valve core assembly is located above the valve seat 16, and comprises a valve core and a sleeve 5; the valve core is divided into two parts, namely an upper plugging core 3 and a lower filter core 2; the plugging core 3 is used to control the fluidity of the medium, and the filter core 2 is used to filter particles in the medium; the plugging core 3 is a solid cylinder with an arc-shaped bottom; an external thread 30 is provided on the outer wall of the plugging core 3; the filter core 2 is a hollow cylinder The valve body 1 is a cylindrical body, and a filter hole 21 is provided on the outer wall of the filter element 2; an internal thread 20 is provided on the top of the inner surface of the filter element 2; the plugging element 3 and the filter element 2 are connected by threads; the plugging element 3 and the filter element have equal diameters, and the valve core after connection is a cylinder as a whole, which can cooperate with the valve seat 16 to move up and down to adjust the medium flow; the sleeve 5 is located at the top of the valve body 1, and a silicone scraper 6 is provided in the sleeve 5; an upper valve cover 9 is provided on the upper part of the valve body 2; a valve cover gasket 18 is provided between the upper valve cover 9 and the valve body 1; the top of the valve core is connected to the pull rod 7, and the top of the pull rod 7 is provided with a handle 15.

[0017] The upper valve cover 9 is connected to the valve body 1 via a fixing bolt 10 . A hexagonal nut 12 is provided on the top of the fixing bolt 10 . A washer 11 is provided between the hexagonal nut 12 and the upper valve cover 9 .

[0018] A sealing packing 4 is provided between the sleeve 5 and the valve body 1 .

[0019] The handle 15 is connected to the pull rod 15 by screws, and a packing gland 13 is provided on the top of the upper valve cover 9; the packing gland 13 is connected to the upper valve cover 9 by a pressure plate bolt 14.

[0020] A packing stopper 8 is arranged outside the pull rod 7 .

[0021] When the utility model is in use, the medium flows into the valve body 1 from the left side, and the handle 15 is turned to move the valve core upward to control the medium to flow out from the right outlet; a silicone scraper 6 is provided in the sleeve 5 to clean and scrape off dirt on the surface of the valve core during the process of the valve core moving from the upper part to the inner part of the sleeve 5, thereby maintaining the cleanliness of the surface of the valve core and ensuring the sealing of the valve core; the bottom filter element 2 can filter some suspended particles in the medium to ensure the fluidity of the medium inside the regulating valve, and at the same time, the medium flows in a low-in and high-out direction, which effectively reduces the scouring of the valve core assembly by the flowing medium.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A flush-free regulating valve, characterized in that: It includes a valve body, a valve core assembly, a valve seat and a pull rod; the valve body is provided with a valve seat and a valve core assembly; a valve seat gasket is provided at the bottom of the valve seat; the valve core assembly is located above the valve seat, and includes a valve core and a sleeve; the valve core is divided into two parts, namely an upper plugging core and a lower filter core; the plugging core is a solid cylinder with an arc-shaped bottom; an external thread is provided on the outer wall of the plugging core; the filter core is a hollow cylinder, and filter holes are provided on the outer wall of the filter core; an internal thread is provided on the top of the inner surface of the filter core; the plugging core and the filter core are connected by threads; the sleeve is located at the top of the valve body, and a silicone scraper is provided in the sleeve; an upper valve cover is provided on the upper part of the valve body; a gasket is provided between the upper valve cover and the valve body; the top of the valve core is connected to the pull rod, and the top of the pull rod is provided with a handle.

2. The flush-free regulating valve according to claim 1, characterized in that: The upper valve cover is connected to the valve body via a fixing bolt, a hexagonal nut is arranged on the top of the fixing bolt, and a washer is arranged on the bottom of the hexagonal nut.

3. The flush-free regulating valve according to claim 1, characterized in that: A sealing filler is arranged between the sleeve and the valve body.

4. The flush-free regulating valve according to claim 1, characterized in that: The handle is connected to the pull rod through a screw, and a packing gland is arranged on the top of the upper valve cover; the packing gland is connected to the upper valve cover through a pressure plate bolt.

5. The flush-free regulating valve according to claim 4, characterized in that: A packing stopper is arranged outside the pull rod.

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