Gate valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a gate valve which comprises a gate valve shell, a valve plate installation guide groove is formed in the gate valve shell, a valve channel is arranged between the front end and the rear end of the gate valve shell in a penetrating mode, a support is installed on the top of the gate valve shell, a screw rod is rotatably installed on the support, and a hand wheel is installed on the top of the screw rod. A valve plate is installed in the valve plate installation guide groove in an inserted mode, an internal thread sleeve is installed on the back face of the valve plate, the internal thread sleeve is in threaded connection with the screw rod, telescopic grooves are formed in the portions, located on the front side and the rear side of the valve plate installation guide groove, of the interior of the gate valve shell, and a fixing plate is in threaded connection with the portion, located at one ends of the telescopic grooves, of the exterior of the gate valve shell. According to the gate valve, when the gate valve is closed, residual materials in the valve can be cleaned, and the problems that cleaning is difficult and the valve plate is not closed tightly due to the fact that the materials are accumulated in the valve plate mounting guide groove are solved.

Description

Technical Field

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

[0002] For the gate valve connected to the pipeline, in order to fit the pipeline interface, its valve channel is usually circular. In order to ensure the sealing, the valve plate is generally installed in the guide groove inside the valve body shell, so that when the valve is closed, its edge is wrapped by the guide groove to avoid leakage. However, when conveying some media containing solids, the guide groove located below is easily filled with the medium, resulting in the inability to squeeze out the medium in the guide groove when the valve is closed, causing the medium to accumulate in the guide groove, thereby adversely affecting the sealing of the bottom of the valve plate. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a gate valve, which can clean the residual material in the valve when the gate valve is closed, avoiding the accumulation of materials in the valve plate mounting guide groove, resulting in cleaning difficulties, and the valve plate not closing tightly.

[0004] To achieve the above objectives, the utility model provides the following technical solutions: a gate valve comprises a gate valve shell, a valve plate mounting guide groove is provided inside the gate valve shell, a valve channel is penetrated between the front and rear ends of the gate valve shell, a bracket is installed on the top of the gate valve shell, a screw is rotatably installed on the bracket, a hand wheel is installed on the top of the screw, a valve plate is inserted and installed inside the valve plate mounting guide groove, an internal threaded sleeve is installed on the back of the valve plate, the internal threaded sleeve is threadedly connected to the screw, telescopic grooves are provided on the front and rear sides of the valve plate mounting guide groove inside the gate valve shell, a fixing plate is screwed on one end of the telescopic groove outside the gate valve shell, a telescopic rod is installed on the fixing plate, the other end of the telescopic rod is connected to the telescopic closing strip, and a discharge groove is penetrated between the valve plate mounting guide groove and the bottom of the gate valve shell.

[0005] The beneficial effects of the utility model are as follows: when the gate valve is closed, the device can clean up the residual material in the valve, avoiding the accumulation of material in the valve plate installation guide groove, which may cause cleaning difficulties and loose valve plate closure, while not affecting the normal passage of material when the valve is opened.

[0006] To telescope the closure strip can be pushed into the telescopic groove:

[0007] As a further improvement of the above technical solution: the side surfaces of the two telescopic closing strips on the side where they are close to each other are both inclined surfaces.

[0008] The beneficial effect of this improvement is that the side surfaces of the telescopic sealing strip on the side where the two are close to each other are all inclined. After the bottom end of the valve plate moves below the valve channel, the material that falls into the valve plate mounting guide groove when passing through the valve plate mounting guide groove is squeezed downward. Under the joint extrusion of the material and the valve plate, the telescopic sealing strip with the inclined surface can be squeezed into the telescopic groove.

[0009] For the connection between this device and the pipeline:

[0010] As a further improvement of the above technical solution: both ends of the valve channel are provided with integrally formed flanges.

[0011] The beneficial effect of this improvement is that the flange is used for connection between the device and the pipeline.

[0012] To remind the valve disc to close properly:

[0013] As a further improvement of the above technical solution: a positioning plate is provided on the front side of the valve plate.

[0014] The beneficial effect of this improvement is that the positioning plate is used to prompt the valve plate to close in place and prevent it from continuing to descend.

[0015] In order to limit the maximum extension distance of the telescopic closure strip:

[0016] As a further improvement of the above technical solution: a limiting plate is installed on the top of the telescopic closing strip.

[0017] The beneficial effect of this improvement is that the limit plate is used to limit the maximum extension distance of the telescopic closing strip.

[0018] To avoid leakage during material transportation:

[0019] As a further improvement of the above technical solution: a spring is sleeved on the outer side of the telescopic rod.

[0020] The beneficial effect of this improvement is that the spring is used to push the telescopic sealing strip to move between the discharge groove and the valve plate installation guide groove after the valve plate rises, thereby avoiding leakage during material transportation.

[0021] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the right front axonometric structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the back side of the valve of the utility model when it is opened;

[0024] Figure 3This is a partial side sectional structural schematic diagram of the utility model when the new valve is opened;

[0025] Figure 4 It is a schematic diagram of the enlarged structure of point A in the utility model;

[0026] Figure 5 It is a partial side sectional structural schematic diagram of the utility model when the valve is closed;

[0027] Figure 6 It is a schematic diagram of the enlarged structure of point B in the utility model;

[0028] In the figure: 1. Gate valve housing; 2. Valve plate mounting guide groove; 3. Valve channel; 4. Flange; 5. Bracket; 6. Screw; 7. Handwheel; 8. Positioning plate; 9. Internal threaded sleeve; 10. Telescopic slot; 11. Fixed plate; 12. Telescopic rod; 13. Telescopic closing strip; 14. Spring; 15. Limit plate; 16. Discharge chute; 17. Valve plate. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0030] like Figure 1-6 As shown, a gate valve comprises a gate valve shell 1, a valve plate mounting guide groove 2 is provided inside the gate valve shell 1, a valve channel 3 is penetrated between the front and rear ends of the gate valve shell 1, a bracket 5 is installed on the top of the gate valve shell 1, a screw rod 6 is rotatably installed on the bracket 5, a hand wheel 7 is installed on the top of the screw rod 6, a valve plate 17 is inserted and installed inside the valve plate mounting guide groove 2, an internal threaded sleeve 9 is installed on the back of the valve plate 17, and the internal threaded sleeve 9 is threadedly connected with the screw rod 6, telescopic grooves 10 are provided on the front and rear sides of the valve plate mounting guide groove 2 inside the gate valve shell 1, a fixing plate 11 is screwed at one end of the telescopic groove 10 outside the gate valve shell 1, a telescopic rod 12 is installed on the fixing plate 11, and the other end of the telescopic rod 12 is connected to a telescopic closing strip 13, and a discharge groove 16 is penetrated between the valve plate mounting guide groove 2 and the bottom of the gate valve shell 1.

[0031] When the gate valve is closed, the device can clean the residual material in the valve, avoid the accumulation of material in the valve plate mounting guide groove 2, which leads to difficulty in cleaning and loose closure of the valve plate 17, while not affecting the normal passage of the material when the valve is opened.

[0032] The side surfaces of the two telescopic sealing strips 13 on the side where they are close to each other are both inclined surfaces.

[0033] The side surfaces of the telescopic sealing strip 13 on the side where the two are close to each other are all inclined. After the bottom end of the valve plate 17 moves below the valve channel 3, the material falling into the valve plate mounting guide groove 2 when passing through the valve plate mounting guide groove 2 is squeezed downward. Under the joint extrusion of the material and the valve plate 17, the telescopic sealing strip 13 with an inclined surface can be squeezed into the telescopic groove 10.

[0034] Both ends of the valve channel 3 are provided with integrally formed flanges 4 .

[0035] The flange 4 is used for connecting the device with the pipeline.

[0036] A positioning plate 8 is provided on the front side of the valve plate 17 .

[0037] The positioning plate 8 is used to remind the valve plate 17 to close in place and prevent it from further descending.

[0038] A limiting plate 15 is installed on the top of the telescopic closing strip 13 .

[0039] The limiting plate 15 is used to limit the maximum extension distance of the telescopic closing strip 13 .

[0040] A spring 14 is sleeved on the outer side of the telescopic rod 12 .

[0041] The spring 14 is used to push the telescopic sealing strip 13 to move between the discharge groove 16 and the valve plate mounting guide groove 2 after the valve plate 17 rises, so as to avoid leakage during material transportation.

[0042] The working principle and use process of the utility model are as follows: when the valve plate 17 of the device is closed, the bottom end of the valve plate 17 passes under the telescopic groove 10, and the telescopic sealing strip 13 is squeezed into the telescopic groove 10. When the valve needs to be opened, the hand wheel 7 is turned to drive the screw rod 6 to rotate, and the valve plate 17 is driven to move upward along the valve plate installation guide groove 2 through the threaded transmission between the screw rod 6 and the internal threaded sleeve 9. After the valve plate 17 leaves the area where the telescopic sealing strip 13 is located, under the elastic force of the spring 14, the telescopic sealing strip 13 is pushed to contact each other through the guidance of the telescopic rod 12, and the valve plate installation guide groove 2 and the discharge groove 16 are blocked. At this time, the material can be transported through the valve channel 3 to complete the material transportation. After delivery, the hand wheel 7 can be rotated in the opposite direction to lower the valve plate to its original position. In this process, after the bottom end of the valve plate 17 moves below the valve channel 3, the material that falls into the valve plate mounting guide groove 2 when passing through the valve plate mounting guide groove 2 is squeezed downward. Under the joint extrusion of the material and the valve plate 17, the telescopic sealing strip 13 with an inclined surface is squeezed into the telescopic groove 10 again, and the material originally accumulated above the telescopic sealing strip 13 is discharged through the discharge groove 16 after the two groups of telescopic sealing strips 13 are separated, thereby realizing the cleaning of the residual material in the valve, avoiding the accumulation of materials in the valve plate mounting guide groove 2, resulting in difficulty in cleaning, and the valve plate 17 is not tightly closed, and at the same time does not affect the normal passage of the material when the valve is opened.

Claims

1. A gate valve, characterized in that: The invention comprises a gate valve housing (1), wherein a valve plate mounting guide groove (2) is provided inside the gate valve housing (1), a valve channel (3) is provided between the front and rear ends of the gate valve housing (1), a bracket (5) is installed on the top of the gate valve housing (1), a screw rod (6) is rotatably installed on the bracket (5), a hand wheel (7) is installed on the top of the screw rod (6), a valve plate (17) is inserted and installed inside the valve plate mounting guide groove (2), an internal threaded sleeve (9) is installed on the back of the valve plate (17), and the internal threaded sleeve (9) is installed on the back of the valve plate (17). The threaded sleeve (9) is threadedly connected to the screw rod (6); telescopic grooves (10) are provided on both the front and rear sides of the valve plate mounting guide groove (2) inside the gate valve housing (1); a fixing plate (11) is screwed to one end of the telescopic groove (10) outside the gate valve housing (1); a telescopic rod (12) is installed on the fixing plate (11); the other end of the telescopic rod (12) is connected to a telescopic closing strip (13); and a discharge groove (16) runs through the bottom of the valve plate mounting guide groove (2) and the gate valve housing (1).

2. A gate valve according to claim 1, characterized in that: The side surfaces of the two telescopic sealing strips (13) on the side where they are close to each other are both inclined surfaces.

3. A gate valve according to claim 1, characterized in that: Both ends of the valve channel (3) are provided with integrally formed flanges (4).

4. A gate valve according to claim 1, characterized in that: A positioning plate (8) is provided on the front side of the valve plate (17).

5. The gate valve according to claim 1, characterized in that: A limiting plate (15) is installed on the top of the telescopic closing strip (13).

6. A gate valve according to claim 1, characterized in that: The outer side of the telescopic rod (12) is sleeved with a spring (14).

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