Water seal gate valve with purging function
By setting up a dust accumulation groove and a purge valve in the water seal gate valve, combined with the cleaning mechanism, the problem of viscous material deposition is solved, the sealing performance and service life are improved, and efficient cleaning effect is achieved.
Patent Information
- Application Number
- CN202421113594.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-21
AI Technical Summary
When the water seal gate valve conveys viscous materials, viscous materials are easily bonded to the gate plate and the inner wall of the pipeline, resulting in media deposition or jamming, damage to the sealing surface, and affecting the valve sealing performance and service life.
A water seal gate valve with purge function is designed, including a dust accumulation groove is provided at the lower end of the valve body, a first purging valve is provided on the upper side of the valve cover, a second purging valve is provided on the lower side of the dust accumulation groove, and a cleaning mechanism is provided on the upper side of the valve cover. , rinse the deposits with high pressure water or steam, and remove the accumulated dust by driving motors and scraper cleaning mechanisms.
Effectively clean the deposition of viscous materials, extend the service life of the valve, improve sealing performance, and be convenient and fast.
Smart Images
Figure CN222209049U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a water-sealed gate valve with a purge function. Background Art
[0002] The principle of the water-sealed gate valve is to use water as a sealant to achieve self-sealing through water pressure. The stuffing box is designed as a water-sealed structure, connected to a 0.6~1.6Mpa water packing, with low friction and good sealing, which can isolate the entire system from the atmosphere and ensure good air tightness. Therefore, the water-sealed gate valve has excellent sealing performance and corrosion resistance, and is suitable for pipeline systems of various chemical media such as acids, alkalis, salts, etc.
[0003] When the water-sealed gate valve is conveying viscous materials, the viscous materials will adhere to the gate plate, the inner wall of the medium outflow pipe, etc. After the gate plate and other places are flushed with a purge valve, the medium is easy to deposit or get stuck on the sealing surface or the pit at the lower end of the valve body, damaging the sealing surface and affecting the valve sealing performance and service life. Summary of the invention
[0004] In view of the deficiencies in the prior art, the utility model provides a water-sealed gate valve with a purge function.
[0005] The technical solution provided by the utility model is:
[0006] A water-sealed gate valve with a purge function comprises a valve body, the valve body is provided with a medium flow channel, a valve seat is provided in the medium flow channel, a valve cover is provided on the valve body, a gate plate is provided in the valve body, the gate plate is provided with a sealing surface that forms a sealing match with the valve seat, the upper end of the gate plate is connected to the valve stem, the upper end of the valve stem passes through the valve cover and is connected to the actuator, a stuffing box is provided between the valve cover and the valve stem, the middle part of the stuffing box is connected to the water-sealed pipe assembly, an ash accumulation groove is provided at the lower end of the valve body, a first purge valve is provided on the upper side of the valve cover, a second purge valve is provided on the lower side of the ash accumulation groove, and the ash accumulation groove is provided with a cleaning mechanism.
[0007] The cleaning mechanism includes a driving motor, a driving rod, a connecting rod, and a scraper. The lower end of the driving rod is connected to the output end of the driving motor, and the upper end extends into the dust accumulation groove. The middle part of the connecting rod is connected to the upper end of the driving rod. The scraper is arranged at both ends of the connecting rod and is close to the inner wall of the dust accumulation groove.
[0008] The water seal pipe assembly includes a water inlet joint and a drain valve. The upper and lower ends of the water seal pipe assembly are both provided with fillers. A pressure cover is provided above the filler and a support ring is provided below. The pressure cover is tightened with bolts to tighten the filler, and the support ring is threadedly connected to the valve cover.
[0009] A wedge-shaped sealing structure is formed between the gate plate and the valve seat.
[0010] The first purge valve is connected to the inner side of the valve cover through a first purge pipe, and the center axis of the first purge pipe forms an angle of 45° with the center axis of the valve stem.
[0011] The second purge valve is connected to the dust accumulation tank through a second purge pipe, and the central axis of the second purge pipe forms an angle of 45° with the central axis of the valve stem.
[0012] The beneficial effects of the utility model are as follows: the utility model arranges an ash trough at the lower end of the valve body, a first purge valve on the upper side of the valve cover, a second purge valve on the lower side of the ash trough, and a cleaning mechanism in the ash trough. When the water-sealed gate valve transmits viscous materials in the installed state, high-pressure water or steam can be introduced from the first purge valve on the valve cover to flush the deposited or stuck viscous materials into the ash trough. After the cleaning mechanism cleans the ash trough, impurities are discharged from the second purge valve, which has the advantages of convenience and time saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the utility model. DETAILED DESCRIPTION
[0014] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.
[0015] like Figure 1 As shown, a water-sealed gate valve with a purging function comprises a valve body 1, wherein the valve body 1 is provided with a medium flow channel 2, wherein a valve seat 5 is provided in the medium flow channel 2, a valve cover 16 is provided on the valve body 1, a gate plate 4 is provided in the valve body 1, the gate plate 4 is provided with a sealing surface which forms a sealing match with the valve seat 5, a wedge-shaped sealing structure is formed between the gate plate 4 and the valve seat 5, the upper end of the gate plate 4 is connected to the valve stem 3, the upper end of the valve stem 3 passes through the valve cover 16 and is connected to the actuator 22, a stuffing box is provided between the valve cover 16 and the valve stem 3, a water-sealed pipe assembly 15 is connected to the middle part of the stuffing box, the water-sealed pipe assembly 15 comprises a water inlet joint 14 and a drain valve 13, the water inlet joint 14 is used to inject water stuffing to form an effective seal, the drain valve 8 is used to discharge the water stuffing, an ash accumulation groove 6 is provided at the lower end of the valve body 1, a first purge valve 171 is provided on the upper side of the valve cover 16, a second purge valve 121 is provided on the lower side of the ash accumulation groove 6, and a cleaning mechanism 11 is provided at the ash accumulation groove 6.
[0016] In this embodiment, the cleaning mechanism 11 includes a driving motor 10, a driving rod 7, a connecting rod 8, and a scraper 9. The lower end of the driving rod 7 is connected to the output end of the driving motor 10, and the upper end extends into the dust accumulation groove 6. A filler is provided between the driving rod 7 and the dust accumulation groove 6 to ensure sealing. The middle part of the connecting rod 8 is connected to the upper end of the driving rod 7. The scraper 9 is provided at both ends of the connecting rod 7 and is attached to the inner wall of the dust accumulation groove 6. The rotation of the driving motor 10 will drive the scraper 9 to rotate along the inner wall of the dust accumulation groove 6 to scrape off the attachments attached to the dust accumulation groove 6.
[0017] In this embodiment, packing 19 is provided at the upper and lower ends of the water seal pipe assembly 15, a pressure cover 20 is provided above the packing 19, and a support ring 18 is provided below. The pressure cover 20 presses the packing 19 through bolts 21, and the support ring 18 is threadedly connected to the valve cover 16, thereby further improving the reliability of the valve sealing.
[0018] In this embodiment, the first purge valve 171 is connected to the inner side of the valve cover 16 through the first purge pipe 17, and the first purge pipe 17 is welded to the surface of the valve cover 16. The central axis of the first purge pipe 17 is at an angle of 45° to the central axis of the valve stem 3. When high-pressure water or steam is introduced into the first purge valve 171, the purge range is larger, which is conducive to cleaning. Similarly, the second purge valve 121 is connected to the ash accumulation groove 6 through the second purge pipe 12, and the second purge pipe 12 is welded to the surface of the ash accumulation groove 6. The central axis of the second purge pipe is at an angle of 45° to the central axis of the valve stem. The second purge valve 121 is used as a drain valve, and high-pressure water or steam can also be introduced to purge the ash accumulation groove 6.
[0019] The embodiments should not be regarded as limiting the present invention, and any non-creative improvements made based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.
Claims
1. A water-sealed gate valve with a purge function, comprising a valve body, the valve body being provided with a medium flow channel, the medium flow channel being provided with a valve seat, the valve body being provided with a valve cover, the valve body being provided with a gate plate, the gate plate being provided with a sealing surface that forms a sealing fit with the valve seat, the upper end of the gate plate being connected to a valve stem, the upper end of the valve stem passing through the valve cover and connected to an actuator, a stuffing box being provided between the valve cover and the valve stem, the middle part of the stuffing box being connected to a water-sealed pipe assembly, Features: A dust accumulation groove is provided at the lower end of the valve body, a first purge valve is provided on the upper side of the valve cover, a second purge valve is provided on the lower side of the dust accumulation groove, and a cleaning mechanism is provided on the dust accumulation groove.
2. A water-sealed gate valve with a purge function according to claim 1, Features: The cleaning mechanism includes a driving motor, a driving rod, a connecting rod, and a scraper. The lower end of the driving rod is connected to the output end of the driving motor, and the upper end extends into the dust accumulation groove. The middle part of the connecting rod is connected to the upper end of the driving rod. The scraper is arranged at both ends of the connecting rod and is close to the inner wall of the dust accumulation groove.
3. A water-sealed gate valve with a purge function according to claim 1, Features: The water seal pipe assembly includes a water inlet joint and a drain valve. The upper and lower ends of the water seal pipe assembly are both provided with fillers. A pressure cover is provided above the filler and a support ring is provided below. The pressure cover is tightened with bolts to tighten the filler, and the support ring is threadedly connected to the valve cover.
4. A water-sealed gate valve with a purge function according to claim 1, Features: A wedge-shaped sealing structure is formed between the gate plate and the valve seat.
5. A water-sealed gate valve with a purge function according to claim 1, Features: The first purge valve is connected to the inner side of the valve cover through a first purge pipe, and the center axis of the first purge pipe forms an angle of 45° with the center axis of the valve stem.
6. A water-sealed gate valve with a purge function according to claim 1, Features: The second purge valve is connected to the dust accumulation tank through a second purge pipe, and the central axis of the second purge pipe forms an angle of 45° with the central axis of the valve stem.