Intercepting valve for heat supply station

Abstract

The utility model discloses a shutoff valve for a heat supply station, which comprises a valve body, a valve cover is arranged at the top of the valve body, a water inlet pipe and a water outlet pipe are respectively arranged on two sides of the valve body, an opening and closing device is arranged on the valve body, drainage devices are arranged on the valve body and the water outlet pipe, a filtering device is arranged on the water outlet pipe, and an installation platform is arranged in the valve body. A first through hole is formed in the installation platform, the water inlet pipe is communicated with the lower portion of the installation platform, and the water outlet pipe is communicated with the upper portion of the installation platform. The water in the water outlet pipe is discharged from the first water discharging pipe, but the water in the water inlet pipe cannot be completely discharged through the first water discharging pipe due to the fact that the height of the mounting platform is large, at the moment, the sealing cap is opened, the rubber plug is taken out, and water discharging of the water inlet pipe can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shut-off valves, and more specifically, to a shut-off valve for a heating station. Background Art

[0002] The hot water delivery network in the heating station is generally equipped with several shutoff valves to control the opening and closing of the pipeline. When disassembling or replacing the existing shutoff valve, the valves closest to the two ends of the shutoff valve are generally closed first, and then the shutoff valve is removed from the pipeline. However, during the disassembly process, a large amount of water in the pipeline will gush out from the connection between the shutoff valve and the pipeline, which is easy to spray on the staff or the nearby ground, requiring cleaning and tidying up, which is time-consuming and laborious; in addition, there will be some scale impurities in the hot water delivery network in the existing heating station. When these impurities enter the pipelines in the heating place, they will accumulate in the pipelines of the heating place, affecting the circulation of hot water, and thus affecting the heating effect. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides a shut-off valve for a heating station to solve the technical problems mentioned in the background technology.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shut-off valve for a heating station, comprising a valve body, a valve cover is provided on the top of the valve body, an inlet pipe and an outlet pipe are respectively provided on both sides of the valve body, an opening and closing device is provided on the valve body, a drainage device is provided on the valve body and the outlet pipe, and a filtering device is provided on the outlet pipe, a mounting platform is provided in the valve body, a first through hole is provided in the mounting platform, the inlet pipe is connected to the bottom of the mounting platform, and the outlet pipe is connected to the top of the mounting platform, the drainage device comprises a first drainage mechanism and a second drainage mechanism, the first drainage mechanism comprises a first drainage pipe, an extension seat, a first fixing seat, a connecting screw and a first sealing seat, the top end of the first drainage pipe is connected to the outlet pipe, and the top end of the first drainage pipe is provided with a sealing cone surface matching the first sealing seat, the extension seat is fixedly connected to the outlet pipe, the first fixing seat is fixedly connected to the top end of the extension seat, the bottom end of the connecting screw is fixedly connected to the first sealing seat, and the top end of the connecting screw passes through the extension seat and the first fixing seat, and the connecting screw and the first fixing seat are threadedly connected.

[0007] The utility model is further configured as follows: the opening and closing device includes a sealing sleeve, a second sealing seat, a valve stem, a second fixed seat and a first knob, the sealing sleeve is fixedly arranged in the first through hole on the mounting platform, the second sealing seat and the sealing sleeve are fitted together, the second fixed seat is fixedly arranged on the valve cover, the bottom end of the valve stem is fixedly connected to the second sealing seat, and the top end of the valve stem passes through the valve cover and the second fixed seat, the valve stem and the second fixed seat are threadedly connected, and the first knob is fixedly sleeved on the top end of the valve stem.

[0008] The utility model is further configured such that the second drainage mechanism includes a second drainage pipe, a rubber plug and a sealing cap, the top of the second drainage pipe is connected to the bottom of the valve body, the rubber plug is arranged in the second drainage pipe, and a rubber pad is provided at the bottom of the rubber plug, the sealing cap is threadedly sleeved outside the second drainage pipe, and the rubber pad is arranged between the second drainage pipe and the sealing cap.

[0009] The utility model is further configured as follows: the filter device includes a filter sleeve, a filter screen and an installation frame, the water outlet pipe is provided with a first groove that cooperates with the installation frame, the filter sleeve is provided with a second groove that cooperates with the installation frame, the filter screen is fixedly arranged in the installation frame, and the installation frame is arranged in the first groove and the second groove, and the filter sleeve and the water outlet pipe are detachably connected by bolts.

[0010] The utility model is further configured such that a sealing ring is provided on the lower surface of the first sealing seat, and the sealing ring is fitted with the sealing cone surface.

[0011] The utility model is further configured that the top end fixing sleeve of the connecting screw is provided with a second knob.

[0012] The utility model is further configured that a first flange is provided on a side of the water inlet pipe away from the valve body.

[0013] The utility model is further configured that a second flange is provided on one side of the water outlet pipe close to the filter sleeve, third flanges are provided on both sides of the filter sleeve, and the second flange and the third flange are detachably connected by bolts.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a shut-off valve for a heating station, which has the following features:

[0016] Beneficial effects:

[0017] 1. The utility model is provided with an installation platform and a drainage device. When the water at one end of the water outlet pipe is discharged, the second knob is turned to drive the first sealing seat to move upward, so that the water in the water outlet pipe is discharged from the first drainage pipe. However, due to the high height of the installation platform, the water in the water inlet pipe cannot be completely discharged through the first drainage pipe. At this time, the sealing cap is opened and the rubber plug is taken out to realize the drainage of the water inlet pipe.

[0018] 2. The utility model is provided with a filtering device to facilitate filtering the water in the pipeline to prevent it from entering into subsequent pipelines and affecting the heating effect of subsequent heat-using places.

[0019] 3. The utility model is provided with an opening and closing device, which facilitates the opening and closing of the valve body by moving the valve stem up and down, driving the second sealing seat to move up and down. When the second sealing seat moves upward, the valve body is opened and the liquid flows. When the second sealing seat moves downward and fits with the sealing sleeve, the valve body is closed to intercept the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a shut-off valve for a heating station in the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the filter device and the second drainage mechanism in the utility model in the explosion state;

[0022] Figure 3 It is a structural schematic diagram of the opening and closing device and the first drainage mechanism in the utility model with the valve body and the valve cover as a cross-section;

[0023] Figure 4 This is a schematic diagram of the structure of the valve body and valve cover in the utility model in a cross-sectional state;

[0024] Figure 5 It is a structural schematic diagram of the connecting screw and the first sealing seat in the utility model.

[0025] In the figure: 1. valve body; 2. valve cover; 3. water inlet pipe; 4. water outlet pipe; 5. installation platform; 6. first through hole; 7. first drain pipe; 8. extension seat; 9. first fixing seat; 10. connecting screw; 11. first sealing seat; 12. sealing cone; 13. sealing sleeve; 14. second sealing seat; 15. valve stem; 16. second fixing seat; 17. first knob; 18. second drain pipe; 19. rubber plug; 20. sealing cap; 21. rubber pad; 22. filter sleeve; 23. filter screen; 24. installation frame; 25. first groove; 26. second groove; 27. sealing ring; 28. second knob; 29. ​​first flange; 30. second flange; 31. third flange. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0029] See also Figure 1-5 A shut-off valve for a heating station comprises a valve body 1, a valve cover 2 is arranged on the top of the valve body 1, a water inlet pipe 3 and a water outlet pipe 4 are arranged on both sides of the valve body 1, an opening and closing device is arranged on the valve body 1, a drainage device is arranged on the valve body 1 and the water outlet pipe 4, a filtering device is arranged on the water outlet pipe 4, an installation platform 5 is arranged in the valve body 1, a first through hole 6 is arranged in the installation platform 5, the water inlet pipe 3 is connected to the lower part of the installation platform 5, the water outlet pipe 4 is connected to the upper part of the installation platform 5, the drainage device comprises a first drainage mechanism and a second drainage mechanism, and the first drainage mechanism comprises a first drainage mechanism The water pipe 7, the extension seat 8, the first fixed seat 9, the connecting screw 10 and the first sealing seat 11, the top end of the first drain pipe 7 is connected to the water outlet pipe 4, and the top end of the first drain pipe 7 is provided with a sealing cone 12 that cooperates with the first sealing seat 11, the extension seat 8 and the water outlet pipe 4 are fixedly connected, the first fixed seat 9 and the top end of the extension seat 8 are fixedly connected, the bottom end of the connecting screw 10 is fixedly connected to the first sealing seat 11, and the top end of the connecting screw 10 passes through the extension seat 8 and the first fixed seat 9, and the connecting screw 10 and the first fixed seat 9 are threadedly connected. The opening and closing device includes a sealing sleeve 13, a second sealing seat 14, a valve stem 15, a second fixing seat 16 and a first knob 17. The sealing sleeve 13 is fixedly arranged in the first through hole 6 on the mounting platform 5. The second sealing seat 14 fits the sealing sleeve 13. The second fixing seat 16 is fixedly arranged on the valve cover 2. The bottom end of the valve stem 15 is fixedly connected to the second sealing seat 14, and the top end of the valve stem 15 passes through the valve cover 2 and the second fixing seat 16. The valve stem 15 and the second fixing seat 16 are threadedly connected. The first knob 17 is fixedly sleeved on the top end of the valve stem 15. A sealing ring 27 is provided on the lower surface of the first sealing seat 11, and the sealing ring 27 fits the sealing cone surface 12.

[0030] In this embodiment, the valve body 1 is connected to the external pipeline through the first flange 29 at the water inlet pipe 3 and the third flange 31 on the filter sleeve 22. Water flows into the valve body 1 from the water inlet pipe 3, and enters the water outlet pipe 4 through the gap between the second sealing seat 14 and the sealing sleeve 13, bypasses the connecting screw 10, passes through the filter screen 23, and is discharged from the filter sleeve 22. When it is necessary to intercept the flow, the first knob 17 is turned to drive the valve stem 15 to rotate. Since the valve stem 15 is threadedly connected to the second fixing seat 16, the second sealing seat 14 is driven to move downward and fit with the sealing sleeve 13, and the valve body 1 is closed and intercepted.

[0031] See also Figure 1-5 As an embodiment of the drainage device: the second drainage mechanism includes a second drainage pipe 18, a rubber plug 19 and a sealing cap 20. The top of the second drainage pipe 18 is connected to the bottom of the valve body 1. The rubber plug 19 is arranged in the second drainage pipe 18, and the bottom of the rubber plug 19 is provided with a rubber pad 21. The sealing cap 20 is threadedly sleeved outside the second drainage pipe 18, and the rubber pad 21 is arranged between the second drainage pipe 18 and the sealing cap 20. The filtering device includes a filter sleeve 22, a filter screen 23 and a mounting frame 24. The outlet pipe 4 is provided with a first groove 25 that matches the mounting frame 24. The filter sleeve 22 is provided with a second groove 26 that matches the mounting frame 24. The filter screen 23 is fixedly arranged in the mounting frame 24, and the mounting frame 24 is arranged in the first groove 25 and the second groove 26. The filter sleeve 22 and the outlet pipe 4 are detachably connected by bolts. The top of the connecting screw 10 is fixedly sleeved with a second knob 28. A first flange 29 is provided on the side of the water inlet pipe 3 away from the valve body 1. A second flange 30 is provided on one side of the water outlet pipe 4 close to the filter sleeve 22 , and third flanges 31 are provided on both sides of the filter sleeve 22 . The second flange 30 and the third flange 31 are detachably connected by bolts.

[0032] More specifically, when the valve body 1 needs to be disassembled or the filter screen 23 needs to be replaced, the other valves closest to the two ends of the valve body 1 are closed first, and the second knob 28 is turned to drive the first sealing seat 11 to move upward, so that the water in the outlet pipe 4 is discharged from the first drain pipe 7. However, due to the high height of the installation platform 5, the water in the water inlet pipe 3 cannot be completely discharged through the first drain pipe 7. At this time, the sealing cap 20 is opened and the rubber plug 19 is taken out to drain the water inlet pipe 3. After the drainage is completed, the connection between the first flange 29 and the third flange 31 and the external pipeline is removed, and finally the device is disassembled for replacement.

[0033] In summary, when the overall device is in use or running: the valve body 1 is connected to the external pipeline through the first flange 29 at the water inlet pipe 3 and the third flange 31 on the filter sleeve 22, the water flows into the valve body 1 from the water inlet pipe 3, and passes through the gap between the second sealing seat 14 and the sealing sleeve 13 to enter the water outlet pipe 4, bypasses the connecting screw 10, passes through the filter screen 23, and is discharged from the filter sleeve 22. When it is necessary to intercept the flow, the first knob 17 is turned to drive the valve stem 15 to rotate. Since the valve stem 15 is threadedly connected to the second fixed seat 16, the second sealing seat 14 is driven to move downward and fit with the sealing sleeve 13, and the valve body 1 is closed and intercepted.

[0034] When the valve body 1 needs to be disassembled or the filter screen 23 needs to be replaced, the other valves closest to the two ends of the valve body 1 are closed first, and the second knob 28 is turned to drive the first sealing seat 11 to move upward to discharge the water in the outlet pipe 4 from the first drain pipe 7. However, due to the high height of the installation platform 5, the water in the water inlet pipe 3 cannot be completely discharged through the first drain pipe 7. At this time, the sealing cap 20 is opened and the rubber plug 19 is taken out to drain the water inlet pipe 3. After the drainage is completed, the connection between the first flange 29 and the third flange 31 and the external pipeline is disassembled, and finally the device is disassembled for replacement.

[0035] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A shut-off valve for a heating station, comprising a valve body (1), a valve cover (2) being provided on the top of the valve body (1), and a water inlet pipe (3) and a water outlet pipe (4) being provided on both sides of the valve body (1), wherein: The valve body (1) is provided with an opening and closing device, the valve body (1) and the water outlet pipe (4) are provided with a drainage device, the water outlet pipe (4) is provided with a filtering device, a mounting platform (5) is provided in the valve body (1), a first through hole (6) is provided in the mounting platform (5), the water inlet pipe (3) is connected to the bottom of the mounting platform (5), and the water outlet pipe (4) is connected to the top of the mounting platform (5), the drainage device comprises a first drainage mechanism and a second drainage mechanism, the first drainage mechanism comprises a first drainage pipe (7), an extension seat (8), a first fixing seat (9), a connecting screw (10) and A first sealing seat (11), the top end of the first drain pipe (7) is connected to the water outlet pipe (4), and the top end of the first drain pipe (7) is provided with a sealing cone surface (12) matched with the first sealing seat (11), the extension seat (8) and the water outlet pipe (4) are fixedly connected, the first fixed seat (9) and the top end of the extension seat (8) are fixedly connected, the bottom end of the connecting screw (10) and the first sealing seat (11) are fixedly connected, and the top end of the connecting screw (10) passes through the extension seat (8) and the first fixed seat (9), and the connecting screw (10) and the first fixed seat (9) are threadedly connected.

2. The shut-off valve for a heating station according to claim 1 is characterized in that: The opening and closing device comprises a sealing sleeve (13), a second sealing seat (14), a valve stem (15), a second fixing seat (16) and a first knob (17); the sealing sleeve (13) is fixedly arranged in a first through hole (6) on the mounting platform (5); the second sealing seat (14) and the sealing sleeve (13) are in close contact with each other; the second fixing seat (16) is fixedly arranged on the valve cover (2); the bottom end of the valve stem (15) is fixedly connected to the second sealing seat (14); the top end of the valve stem (15) passes through the valve cover (2) and the second fixing seat (16); the valve stem (15) and the second fixing seat (16) are threadedly connected; and the first knob (17) is fixedly sleeved on the top end of the valve stem (15).

3. The shut-off valve for a heating station according to claim 1 is characterized in that: The second drainage mechanism comprises a second drainage pipe (18), a rubber plug (19) and a sealing cap (20); the top end of the second drainage pipe (18) is connected to the bottom of the valve body (1); the rubber plug (19) is arranged in the second drainage pipe (18), and a rubber pad (21) is arranged at the bottom of the rubber plug (19); the sealing cap (20) is threadedly sleeved outside the second drainage pipe (18), and the rubber pad (21) is arranged between the second drainage pipe (18) and the sealing cap (20).

4. The shut-off valve for a heating station according to claim 1 is characterized in that: The filtering device comprises a filtering sleeve (22), a filtering net (23) and a mounting frame (24); the water outlet pipe (4) is provided with a first groove (25) which cooperates with the mounting frame (24); the filtering sleeve (22) is provided with a second groove (26) which cooperates with the mounting frame (24); the filtering net (23) is fixedly arranged in the mounting frame (24); and the mounting frame (24) is arranged in the first groove (25) and the second groove (26); the filtering sleeve (22) and the water outlet pipe (4) are detachably connected by bolts.

5. The shut-off valve for a heating station according to claim 1 is characterized in that: A sealing ring (27) is provided on the lower surface of the first sealing seat (11), and the sealing ring (27) is in close contact with the sealing cone surface (12).

6. The shut-off valve for a heating station according to claim 1 is characterized in that: The top end of the connecting screw rod (10) is fixedly sleeved with a second knob (28).

7. The shut-off valve for a heating station according to claim 1 is characterized in that: A first flange (29) is provided on the side of the water inlet pipe (3) away from the valve body (1).

8. The shut-off valve for a heating station according to claim 4 is characterized in that: A second flange (30) is provided on one side of the water outlet pipe (4) close to the filter sleeve (22), and third flanges (31) are provided on both sides of the filter sleeve (22). The second flange (30) and the third flange (31) are detachably connected by bolts.

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