Wear-resistant sealing structure of Sapheke stop valve

Abstract

The utility model belongs to the field of stop valves, and particularly relates to a wear-resistant sealing structure of a Stepo stop valve, which comprises a valve body of the Stepo stop valve, a valve rod support is fixedly mounted at the top of the valve body, an electric control shell is fixedly mounted at the top of the valve rod support, and an electric control mechanism is arranged in the electric control shell. A main valve rod is slidably installed on the inner side of the valve rod support, the main valve rod slidably penetrates through the top of the valve body, sliding openings are formed in the two sides of the valve rod support, the same linkage support is slidably installed in the two sliding openings, and two auxiliary valve mechanisms are arranged at the bottom of the linkage support. The two auxiliary valves can be driven by the main valve to synchronously seal the valve, when a medium leaks little through the main sealing face, the sealing faces of the two auxiliary valves can further prevent the medium from leaking, the overall sealing performance is improved, the valve can be better opened and closed through the arranged electric control mechanism, and the service life of the valve is prolonged. And the service life of the valve is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a wear-resistant sealing structure for Spirax Sarco gate valves. Background Technology

[0002] Spirax Sarco gate valves typically rely on the valve stem to move the valve disc up and down to open and close the valve. When the valve disc descends and fits tightly against the valve seat, the valve is closed, preventing the flow of media. When the valve disc rises and leaves the valve seat, the valve opens, allowing the media to pass through. In this way, gate valves can precisely control the flow of media in the pipeline, and some gate valves can also regulate the flow rate to a certain extent.

[0003] Spirax Sarco gate valves mostly use a single-stage sealing mechanism. After long-term use, the valve body often becomes loose and leaks due to wear of the main valve. In addition, most existing equipment uses manual valve opening and closing. In actual use, the resistance to turning the valve is relatively large, which puts a heavy burden on the operator.

[0004] Therefore, we propose a wear-resistant sealing structure for Spirax Sarco gate valves to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wear-resistant sealing structure for a Spirax Sarco gate valve includes a valve body. A valve stem bracket is fixedly mounted on the top of the valve body, and an electrical control housing is fixedly mounted on the top of the valve stem bracket. An electrical control mechanism is located inside the electrical control housing. A main valve stem is slidably mounted on the inner side of the valve stem bracket, and the main valve stem slidably passes through the top of the valve body. Sliding openings are provided on both sides of the valve stem bracket, and the same linkage bracket is slidably mounted in both sliding openings. Two auxiliary valve mechanisms are provided at the bottom of the linkage bracket.

[0007] Specifically, the electronic control mechanism includes a worm gear, a worm, and a servo motor. The worm is rotatably mounted on one inner wall of the electronic control housing, and the servo motor is fixedly mounted on the bottom inner wall of the electronic control housing. The output shaft of the servo motor is fixedly connected to the worm. The worm gear is rotatably mounted on the bottom inner wall of the electronic control housing. The worm gear meshes with the worm, and the worm can drive the worm gear to rotate.

[0008] Specifically, a hexagonal column is fixedly installed at the bottom of the worm gear, and the hexagonal column rotates through the bottom of the electrical control housing. A hexagonal groove is opened at the top of the main valve stem, and the hexagonal column is slidably installed in the hexagonal groove, so as to drive the main valve stem to rotate through the hexagonal column.

[0009] Specific, the top of the valve body is provided with a threaded hole, the outer side of the main valve rod is provided with an external thread groove, the main valve rod is in threaded connection with the threaded hole, the bottom of the main valve rod is fixedly installed with a main valve core, the inner wall of the bottom of the valve body is fixedly installed with a main valve seat, the main valve core is matched with the main valve seat, and the main valve rod is moved through the external thread groove and the threaded hole.

[0010] Specific, the inner side of the threaded hole is fixedly installed with a corrugated sealing pipe, and the main valve core slides through the corrugated sealing pipe.

[0011] Specific, the top of the valve body is fixedly penetrated through two auxiliary valve pipes.

[0012] Specific, the auxiliary valve mechanism comprises an auxiliary valve rod and an auxiliary valve core, the bottom of the linkage support is fixedly installed with the auxiliary valve rod, the bottom end of the auxiliary valve rod is fixedly installed with the auxiliary valve core, and the auxiliary valve rod is slidably installed on the inner side of the auxiliary valve pipe, so that the auxiliary valve core can be moved through the linkage support.

[0013] Specific, the inner wall of the bottom of the valve body is fixedly installed with two auxiliary valve seats, and the two auxiliary valve cores are matched with the corresponding auxiliary valve seats respectively, so that the auxiliary main valve can be sealed, and the overall sealing performance is improved.

[0014] Compared with the prior art, the auxiliary valve mechanism can drive two auxiliary valves to seal the valve synchronously through the main valve, the sealing surface of the two auxiliary valves can further prevent medium leakage when a small amount of medium leaks through the main sealing surface, the overall sealing performance is improved, the electric control mechanism can better open and close the valve, the operation of the valve is more stable, the friction between the valve rod and the valve body is reduced, and the service life of the valve is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the wear-resistant sealing structure of the spisha stop valve is provided for the utility model;

[0016] Figure 2 A three-dimensional structure sectional view schematic view of the wear-resistant sealing structure of the spisha stop valve is provided for the utility model;

[0017] Figure 3 A three-dimensional structure split schematic view of the wear-resistant sealing structure of the spisha stop valve is provided for the utility model;

[0018] Figure 4 A three-dimensional structure split schematic view of the electric control mechanism of the wear-resistant sealing structure of the spisha stop valve is provided for the utility model;

[0019] Figure 5The utility model provides a kind of vice valve mechanism's three-dimensional structure split schematic diagram of the wear-resistant sealing structure of spishaque stop valve.

[0020] In the drawing: 1, valve body;2, valve rod support;3, electric control shell;4, worm wheel;5, worm;6, servo motor;7, hexagonal column;8, main valve rod;9, hexagonal groove;10, main valve core;11, corrugated sealing tube;12, main valve seat;13, linkage support;14, vice valve rod;15, vice valve core;16, vice valve seat;17, vice valve pipeline;18, sealing rubber ring;19, external thread groove;20, threaded hole. DETAILED DESCRIPTION

[0021] REFERENCE Figures 1-5 A kind of wear-resistant sealing structure of spishaque stop valve, including the valve body 1 of spishaque stop valve, the top of valve body 1 is fixedly installed with valve rod support 2, the top of valve rod support 2 is fixedly installed with electric control shell 3, electric control mechanism is equipped in electric control shell 3;The inside of valve rod support 2 is slidably installed with main valve rod 8, main valve rod 8 slidably penetrates the top of valve body 1, both sides of valve rod support 2 are all provided with sliding port, the same linkage support 13 is slidably installed in two sliding ports, the bottom of linkage support 13 is equipped with two vice valve mechanisms.

[0022] In the embodiment, electric control mechanism includes worm wheel 4, worm 5 and servo motor 6, one side inner wall of electric control shell 3 is rotatably installed with worm 5, the bottom inner wall of electric control shell 3 is fixedly installed with servo motor 6, the output shaft of servo motor 6 is fixedly connected with worm 5, the bottom inner wall of electric control shell 3 is rotatably installed with worm wheel 4, worm wheel 4 is engaged with worm 5, can be rotated by worm 5 to drive worm wheel 4.

[0023] In the embodiment, the bottom of worm wheel 4 is fixedly installed with hexagonal column 7, hexagonal column 7 rotatably penetrates the bottom of electric control shell 3, the top of main valve rod 8 is provided with hexagonal groove 9, hexagonal column 7 is slidably installed in hexagonal groove 9, it is convenient to rotate main valve rod 8 by hexagonal column 7.

[0024] In the embodiment, the top of valve body 1 is provided with threaded hole 20, the outside of main valve rod 8 is provided with external thread groove 19, main valve rod 8 is threadedly connected with threaded hole 20, the bottom of main valve rod 8 is fixedly installed with main valve core 10, the bottom inner wall of valve body 1 is fixedly installed with main valve seat 12, main valve core 10 is matched with main valve seat 12, it is convenient to move main valve rod 10 by external thread groove 19 and threaded hole 20.

[0025] In the embodiment, the inside of threaded hole 20 is fixedly installed with corrugated sealing tube 11, main valve core 10 slidably penetrates corrugated sealing tube 11.

[0026] In the embodiment, the top of valve body 1 is fixedly penetrated two vice valve pipelines 17.

[0027] In the embodiment, the auxiliary valve mechanism comprises an auxiliary valve rod 14 and an auxiliary valve core 15, the bottom of the linkage support 13 is fixedly installed with the auxiliary valve rod 14, the bottom end of the auxiliary valve rod 14 is fixedly installed with the auxiliary valve core 15, and the auxiliary valve rod 14 is slidingly installed on the inner side of the auxiliary valve pipeline 17 and can drive the auxiliary valve core 15 to move through the linkage support 13.

[0028] In the embodiment, the bottom inner wall of the valve body 1 is fixedly installed with two auxiliary valve seats 16, and the two auxiliary valve cores 15 are respectively matched with the corresponding auxiliary valve seats 16, so that the auxiliary valve can assist the main valve to seal the valve and improve the overall sealing performance.

[0029] Working principle: when in use, after the staff connects the spisha stop valve with the pipeline through the flange plates on both sides of the valve body 1, the staff starts the servo motor 6 through the control panel, the servo motor 6 is started to drive the worm 5 to rotate, the worm 5 drives the worm wheel 4 to rotate, the worm wheel 4 drives the hexagonal column 7 to rotate, the hexagonal column 7 drives the main valve rod 8 provided with the hexagonal groove 9, the outer side of the main valve rod 8 is provided with an external thread groove 19, the top of the valve body 1 is provided with a threaded hole 20, the external thread groove 19 is matched with the threaded hole 20, so that the main valve rod 8 moves downward through the threaded hole 20 when rotating, thereby driving the main valve core 10 to move downward and contact the main valve seat 12 to be closed, and the corrugated sealing pipe 11 can effectively improve the sealing effect; meanwhile, the outer side of the main valve rod 8 is provided with an annular groove, the linkage support 13 is rotatably installed in the annular groove, the main valve rod 8 moves to drive the linkage support 13 to move, thereby driving the two auxiliary valve rods 14 to move downward, the two auxiliary valve rods 14 move to drive the corresponding auxiliary valve cores 15 to move and contact the corresponding auxiliary valve seats 16, so that the medium leakage can be further prevented when the main valve is not tightly sealed, and the overall sealing performance of the equipment is improved.

[0030] The technical progress obtained by the utility model compared with the prior art is that the two auxiliary valves can be driven by the main valve to seal the valve synchronously, the auxiliary valve cores 15 of the two auxiliary valves can further prevent the medium from leaking when the medium leaks a small amount through the main valve core 10, the overall sealing performance is improved, the electric control mechanism can better open and close the valve, the movement of the main valve rod 8 is more stable, the friction between the main valve rod 8 and the valve body is reduced, and the service life of the valve is prolonged.

Claims

1. A spool valve wear seal structure, comprising: The utility model provides a valve body (1) including the spicer stop valve, the top of valve body (1) is fixedly installed with valve rod support (2), the top of valve rod support (2) is fixedly installed with electric control shell (3), and the inside of electric control shell (3) is equipped with electric control mechanism; The inside of valve rod support (2) is slidably installed with main valve rod (8), main valve rod (8) slidably penetrates the top of valve body (1), both sides of valve rod support (2) are provided with sliding opening, and the same linkage support (13) is slidably installed in two sliding openings, and the bottom of linkage support (13) is provided with two auxiliary valve mechanisms.

2. A wear resistant seal for a Spiller Hanle valve as defined in claim 1, wherein The electric control mechanism includes worm wheel (4), worm (5) and servo motor (6), one side inner wall of electric control shell (3) is rotatably installed with worm (5), the bottom inner wall of electric control shell (3) is fixedly installed with servo motor (6), the output shaft of servo motor (6) is fixedly connected with worm (5), and the bottom inner wall of electric control shell (3) is rotatably installed with worm wheel (4), and worm wheel (4) is in mesh with worm (5).

3. A wear resistant seal for a Spiller Hanle valve as defined in claim 2 wherein, The bottom of worm wheel (4) is fixedly installed with hexagonal column (7), hexagonal column (7) rotatably penetrates the bottom of electric control shell (3), and the top of main valve rod (8) is provided with hexagonal groove (9), and hexagonal column (7) is slidably installed in hexagonal groove (9).

4. A wear resistant seal for a Spiller Hanle valve as defined in claim 3 wherein, The top of valve body (1) is provided with threaded hole (20), the outer side of main valve rod (8) is provided with external thread groove (19), main valve rod (8) is threadedly connected with threaded hole (20), the bottom of main valve rod (8) is fixedly installed with main valve core (10), the bottom inner wall of valve body (1) is fixedly installed with main valve seat (12), and main valve core (10) is matched with main valve seat (12).

5. A wear resistant seal for a Spiller Hanle valve as defined in claim 4 wherein, The inside of threaded hole (20) is fixedly installed with corrugated sealing tube (11), and main valve core (10) slidably penetrates corrugated sealing tube (11).

6. A wear resistant seal for a Spiller Hanle valve as defined in claim 1 wherein, The top of valve body (1) is fixedly penetrated with two auxiliary valve pipes (17).

7. A wear resistant seal for a Spiller Hanle valve as defined in claim 6 wherein, The bottom of linkage support (13) is fixedly installed with auxiliary valve rod (14), the bottom end of auxiliary valve rod (14) is fixedly installed with auxiliary valve core (15), and auxiliary valve rod (14) is slidably installed in the inside of auxiliary valve pipe (17).

8. A wear resistant seal for a Spiller Hanle valve as defined in claim 7 wherein, The bottom inner wall of valve body (1) is fixedly installed with two auxiliary valve seats (16), and two auxiliary valve cores (15) are matched with corresponding auxiliary valve seats (16) respectively.

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