Stop valve

Abstract

The utility model discloses a stop valve which comprises a valve body and a valve cover, the middle position of the top of the valve body is connected with the valve cover through a flange, an annular supporting plate is inserted in an inserting groove in the outer side of the valve cover, the two sides of the top of the annular supporting plate are provided with oppositely-opened protective covers, and the middle of the valve cover is connected with a valve rod through threads. The bottom end of the valve rod extends into the valve body and is connected with a bearing sleeve through threads, the bottom of the bearing sleeve is fixedly connected with a valve clack, a threaded groove is formed in the middle of the bottom of the valve clack, a connecting block is arranged at the bottom of the valve clack, supporting rods are evenly arranged on the outer side of the bottom end of the connecting block, and the other ends of the supporting rods on the outer side of the connecting block are fixedly connected with an annular brush. The hand wheel and the valve rod are protected on the outer side, the situation that the valve clack is loosened due to mistaken touch can be prevented, and when the valve clack moves, the annular brush can be driven to clean the inner side of the valve seat, and the situation that the closing effect is affected due to impurity attachment is prevented.

Description

Technical Field

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

[0002] The stop valve, also known as the cut-off valve, is a forced sealing valve and one of the most widely used valves. It can be widely used in industries such as chemical industry, shipbuilding, medicine, and food machinery. It is particularly suitable for cutting off or regulating fluids such as air, water, steam, and various corrosive media.

[0003] In the prior art, general stop valves do not have a device to shield and protect their handwheels when in use. The handwheel may be accidentally touched and rotated, causing it to loosen. When a medium containing particles flows, impurities may adhere to the inside of the valve seat. If it is not cleaned, the closing effect may be affected. Utility Model Content

[0004] The purpose of the present utility model is to provide a stop valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stop valve, comprising a valve body and a valve cover, the valve cover is connected to the middle position of the top of the valve body through a flange, and an annular sealing gasket is provided between the valve cover and the valve body, L-shaped slots are evenly provided on the outside of the valve cover, and an annular support plate is inserted into the L-shaped slots on the outside of the valve cover, two opposing protective covers are provided on both sides of the top of the annular support plate, and an annular groove is provided on the inside of the protective cover, screw rod grooves are provided at the middle positions of both sides of the top of the annular support plate, and screw rods are provided in the screw rod grooves through bearing seats, the screw rods are connected to threaded blocks through threads, and both sides of the top of the threaded block are fixedly connected to L-shaped connecting rods through the screw rod grooves, and the L-shaped connecting rods are away from One end of the screw rod is connected to the corresponding protective cover, the middle of the valve cover is connected to the valve stem through a thread, and the bottom end of the valve stem extends into the valve body and is connected to a bearing sleeve through a thread, and the bottom of the bearing sleeve is fixedly connected to a valve disc, a threaded groove is provided in the middle position of the bottom of the valve disc, and a connecting block is provided at the bottom of the valve disc, and support rods are evenly provided on the outside of the bottom end of the connecting block, and an annular brush is fixedly connected to the other end of the support rod on the outside of the connecting block, so that the protective cover moves toward the middle to block the hand wheel and the valve stem, preventing the hand wheel from being accidentally touched and causing the valve disc to loosen, and when opening and closing the valve, the valve disc can drive the annular brush to move through the connecting pipe to clean the inside of the valve seat, which can prevent some impurities in the medium containing particles from adhering to the valve seat and affecting its closing effect.

[0006] Preferably, the annular support plate is provided with a groove at a position corresponding to the L-shaped slot on one side of the valve stem, and an L-shaped plug is provided in the groove of the annular support plate. The end of the L-shaped plug extends to the outside of the annular support plate away from the groove and is plugged into the L-shaped slot. The groove at the bottom of the L-shaped plug is evenly connected with a spring, so that the L-shaped plug can be moved downward to be inserted into the L-shaped slot for plugging. Then, the L-shaped plug can rebound upward under the action of the spring and move into the L-shaped slot, which is convenient for disassembly and assembly.

[0007] Preferably, a threaded hole is provided in the annular support plate on the top of the L-shaped plug away from the valve stem, and a screw is connected to the threaded hole of the annular support plate through a thread, and the bottom of the screw is fixedly connected to an extrusion plate, so that the rotation of the screw drives the extrusion plate to move up and down, making it convenient for the L-shaped plug to shrink and rebound.

[0008] Preferably, a handwheel is provided at the top of the valve stem, and a nut is threadedly connected to the top of the handwheel, a gasket is provided between the handwheel and the nut, and a valve stem sleeve is threadedly connected to the outside of the valve stem between the handwheel and the valve cover.

[0009] Preferably, a packing gland is provided at the top inner side of the valve cover outside the valve stem, and packing is provided in the valve cover at the bottom of the packing gland.

[0010] Preferably, an insert is provided in the middle position of the top of the connecting block, and an adaptive thread is provided on the outside of the insert, and the insert is connected to the thread groove of the valve disc through the thread, so that the insert on the top of the connecting block is screwed into the thread groove through the thread, which is convenient for disassembly.

[0011] Preferably, a turntable is provided at a position corresponding to the screw rod on the outer side of the annular support plate, and a rotating rod on the inner side of the turntable extends to the screw rod groove through a bearing and is connected to the screw rod.

[0012] Preferably, flanges are provided at both ends of the valve body, and a valve seat is provided in the middle of the inner side of the valve body at a position corresponding to the valve disc.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the stop valve, by inserting the annular support plate into the outside of the valve cover, and then rotating the turntable outside the annular support plate, drives the turntable to move the threaded block on the screw rod, and drives the protective cover to move toward the middle through the L-shaped connecting rod to cover the hand wheel and the valve stem, thereby preventing the hand wheel from being accidentally touched and causing the valve disc to loosen, and when assembling the valve body, the plug on the top of the connecting block can be screwed into the threaded groove through the thread according to the needs of the circulating medium, and then when opening and closing the valve, the bottom connecting block can be driven to move together, so that the connecting block drives the annular brush to move through the support rod to clean the inside of the valve seat, which can prevent some impurities in the medium containing particles from adhering to the valve seat and affecting its closing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the ice making machine and ice making trough of the present utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the ice maker and compressor of the present utility model;

[0017] Figure 4 For the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0018] Figure 5 For the utility model Figure 1 The enlarged structural diagram at B in the middle;

[0019] In the figure: 1. Valve body; 2. Valve cover; 3. Annular support plate; 4. Valve stem sleeve; 5. Handwheel; 6. Protective cover; 7. Packing gland; 8. Packing; 9. Valve stem; 10. Annular sealing gasket; 11. Bearing sleeve; 12. Valve disc; 13. Screw; 14. Threaded block; 15. L-shaped connecting rod; 16. Screw; 17. Screw groove; 18. Turntable; 19. L-shaped plug; 20. Extrusion plate; 21. Spring; 22. Connecting block; 23. Plug; 24. Annular brush. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-5, the utility model provides an embodiment: a stop valve, including a valve body 1 and a valve cover 2, the middle position of the top of the valve body 1 is connected to the valve cover 2 through a flange, and an annular sealing gasket 10 is provided between the valve cover 2 and the valve body 1, L-shaped slots are evenly provided on the outside of the valve cover 2, and an annular support plate 3 is inserted into the L-shaped slots on the outside of the valve cover 2, and a split protective cover 6 is provided on both sides of the top of the annular support plate 3, and an annular groove is provided on the inner side of the protective cover 6, a screw rod groove 17 is provided in the middle position of both sides of the top of the annular support plate 3, and a screw rod 16 is provided in the screw rod groove 17 through a bearing seat, the screw rod 16 is connected to the screw block 14 through a thread, and both sides of the top of the screw block 14 are fixedly connected to an L-shaped connecting rod 15 through the screw rod groove 17, and the L-shaped connecting rod The ends of the connecting rods 15 away from the screw rods 16 are connected to the corresponding protective covers 6. The middle of the valve cover 2 is connected to the valve stem 9 by threads, and the bottom end of the valve stem 9 extends into the valve body 1 and is connected to the bearing sleeve 11 by threads, and the bottom of the bearing sleeve 11 is fixedly connected to the valve disc 12. A threaded groove is provided in the middle position of the bottom of the valve disc 12, and a connecting block 22 is provided at the bottom of the valve disc 12. Support rods are evenly provided on the outside of the bottom end of the connecting block 22, and the other end of the support rod on the outside of the connecting block 22 is fixedly connected to an annular brush 24. A handwheel 5 is provided at the top of the valve stem 9, and a nut is connected to the top of the handwheel 5 by threads. A gasket is provided between the handwheel 5 and the nut, and the outside of the valve stem 9 between the handwheel 5 and the valve cover 2 is connected to the valve stem sleeve 4 by threads. The top of the valve stem 9 on the outside of the valve cover 2 A packing gland 7 is provided at the end, and a packing 8 is provided in the valve cover 2 at the bottom of the packing gland 7. A plug-in block 23 is provided in the middle position of the top of the connecting block 22, and an adaptor thread is provided on the outside of the plug-in block 23, and the plug-in block 23 is connected to the thread groove of the valve disc 12 through a thread. A turntable 18 is provided at the position corresponding to the screw rod 16 on the outside of the annular support plate 3, and the turning rod on the inside of the turntable 18 extends to the screw rod groove 17 through a bearing and is connected to the screw rod 16. Flanges are provided at both ends of the valve body 1, and a valve seat is provided at the position corresponding to the valve disc 12 in the middle of the inside of the valve body 1, so that when the staff assembles the valve body 1, they can screw the plug-in block 23 on the top of the connecting block 22 into the thread groove through a thread according to the needs of the circulating medium. After the valve body 1 is assembled, the valve body 1 can be connected to the pipeline through the flange. After the connection, the hand wheel 5 can be rotated to drive the valve stem 9 to rotate together, so that the valve stem 9 can drive the bottom valve disc 12 to move, and the valve can be opened and closed. Then, the bottom connecting block 22 can be driven to move together, so that the connecting block 22 drives the annular brush 24 to move through the support rod to clean the inside of the valve seat, which can prevent some impurities in the medium containing particles from adhering to the valve seat and affecting its closing effect. When the rotation is completed, the annular support plate 3 can be plugged into the outside of the valve cover 2, and then the turntable 18 outside the annular support plate 3 can be rotated to drive the turntable 18 to drive the threaded block 14 on the screw rod 16 to move, so that the threaded block 14 drives the protective cover 6 to move toward the middle through the L-shaped connecting rod 15 to cover the hand wheel 5 and the valve stem 9, so as to prevent the valve disc 12 from loosening due to accidental contact with the hand wheel 5.

[0022] The position of the L-shaped slot corresponding to the side of the valve stem 9 in the annular support plate 3 is provided with a groove, and an L-shaped plug 19 is provided in the groove of the annular support plate 3. The end of the L-shaped plug 19 away from the groove extends to the outside of the annular support plate 3 and is plugged into the L-shaped slot. The groove at the bottom of the L-shaped plug 19 is evenly provided with a spring 21 connected. The top of the L-shaped plug 19 is away from the side of the annular support plate 3 on the side of the valve stem 9. A threaded hole is provided in the threaded hole of the annular support plate 3, and a screw 13 is connected to the screw hole by a thread, and the bottom of the screw 13 is fixed. It is connected with an extrusion plate 20, so that the staff can align the L-shaped plug 19 on the inner side of the annular support plate 3 with the L-shaped slot, and then rotate the screw 13 so that the screw 13 drives the extrusion plate 20 to rotate downward, so that the extrusion plate 20 can squeeze the L-shaped plug 19 downward, so that the L-shaped plug 19 squeezes the spring 21 and can be inserted downward into the L-shaped slot, which is convenient for plugging in. When disassembly is required, the screw 13 can be reversed to drive the extrusion plate 20 to move upward, so that the L-shaped plug 19 rises under the action of the spring 21, so that it is separated from the L-shaped slot, which is convenient for disassembly.

[0023] When the embodiment of the present application is in use, when assembling the valve body 1, the staff can screw the plug 23 on the top of the connecting block 22 into the threaded groove through the thread according to the needs of the circulating medium. When the valve body 1 is assembled, the valve body 1 can be connected to the pipeline through the flange, and the hand wheel 5 can be turned to drive the valve stem 9 to rotate together, so that the valve stem 9 can drive the bottom valve disc 12 to move, and the valve can be opened and closed. Then, the bottom connecting block 22 can be driven to move together, so that the connecting block 22 drives the annular brush 24 to move through the support rod to clean the inside of the valve seat, which can prevent some impurities in the medium containing particles from adhering to the valve seat and affecting its closing effect. After the rotation is completed, the L-shaped plug 19 on the inner side of the annular support plate 3 can be aligned with the L-shaped slot, and then After that, the screw 13 can be rotated to make the screw 13 drive the extrusion plate 20 to rotate downward, so that the extrusion plate 20 can squeeze the L-shaped plug 19 downward, so that the L-shaped plug 19 squeezes the spring 21 and can be inserted downward into the L-shaped slot for easy insertion. When disassembly is required, the screw 13 can be reversed to drive the extrusion plate 20 to move upward, so that the L-shaped plug 19 rises under the action of the spring 21, so that it is separated from the L-shaped slot for easy disassembly. After insertion, the turntable 18 outside the annular support plate 3 can be rotated to make the turntable 18 drive the threaded block 14 on the screw rod 16 to move, so that the threaded block 14 drives the protective cover 6 to move to the middle through the L-shaped connecting rod 15 to block the hand wheel 5 and the valve stem 9 to prevent the valve disc 12 from loosening due to accidental contact with the hand wheel 5.

[0024] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A stop valve, characterized in that: The invention comprises a valve body (1) and a valve cover (2), wherein the valve cover (2) is connected to the middle position of the top of the valve body (1) via a flange, and an annular sealing gasket (10) is provided between the valve cover (2) and the valve body (1), L-shaped slots are evenly provided on the outside of the valve cover (2), and an annular support plate (3) is inserted into the L-shaped slots on the outside of the valve cover (2), and a split protective cover (6) is provided on both sides of the top of the annular support plate (3), and an annular groove is provided on the inside of the protective cover (6), and a screw rod groove (17) is provided at the middle position of both sides of the top of the annular support plate (3), and a screw rod (16) is provided in the screw rod groove (17) via a bearing seat, and a threaded block (14) is connected to the screw rod (16) via a thread, and the threaded block ( 14) Both sides of the top are fixedly connected with L-shaped connecting rods (15) through screw rod grooves (17), and the ends of the L-shaped connecting rods (15) away from the screw rods (16) are connected to the corresponding protective covers (6), the middle of the valve cover (2) is connected with the valve stem (9) through threads, and the bottom end of the valve stem (9) extends into the valve body (1) and is connected with the bearing sleeve (11) through threads, and the bottom of the bearing sleeve (11) is fixedly connected with the valve disc (12), the middle position of the bottom of the valve disc (12) is provided with a threaded groove, and the bottom of the valve disc (12) is provided with a connecting block (22), the outer side of the bottom end of the connecting block (22) is evenly provided with support rods, and the other end of the support rod on the outer side of the connecting block (22) is fixedly connected with an annular brush (24).

2. A stop valve according to claim 1, characterized in that: The annular support plate (3) is provided with grooves at positions corresponding to the L-shaped slots on one side close to the valve stem (9), and the grooves of the annular support plate (3) are provided with L-shaped plugs (19). The end of the L-shaped plugs (19) away from the grooves extends to the outside of the annular support plate (3) and is plugged into the L-shaped slots, and the grooves at the bottom of the L-shaped plugs (19) are evenly provided with springs (21) for connection.

3. A stop valve according to claim 2, characterized in that: A threaded hole is provided in the annular support plate (3) on the side of the top of the L-shaped plug (19) away from the valve stem (9), and a screw rod (13) is connected to the threaded hole of the annular support plate (3) through a thread, and the bottom of the screw rod (13) is fixedly connected to an extrusion plate (20).

4. A stop valve according to claim 1, characterized in that: A handwheel (5) is provided at the top end of the valve stem (9), and a nut is connected to the top end of the handwheel (5) via a thread, a gasket is provided between the handwheel (5) and the nut, and a valve stem sleeve (4) is connected to the outside of the valve stem (9) between the handwheel (5) and the valve cover (2) via a thread.

5. A stop valve according to claim 1, characterized in that: A packing gland (7) is provided at the top end of the valve cover (2) outside the valve stem (9), and a packing (8) is provided in the valve cover (2) at the bottom of the packing gland (7).

6. A stop valve according to claim 1, characterized in that: An insert block (23) is provided at the middle position of the top of the connection block (22), and an adaptable thread is provided on the outside of the insert block (23), and the insert block (23) is connected to the thread groove of the valve disc (12) through the thread.

7. The stop valve according to claim 1, characterized in that: A turntable (18) is provided at a position on the outside of the annular support plate (3) corresponding to the screw rod (16), and a turntable on the inside of the turntable (18) extends to the screw rod groove (17) through a bearing and is connected to the screw rod (16).

8. The stop valve according to claim 1, characterized in that: Both ends of the valve body (1) are provided with flanges, and a valve seat is provided at a position corresponding to the valve disc (12) in the middle of the inner side of the valve body (1).

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