Self-cleaning draining gate valve for slag hopper

Abstract

The self-cleaning draining gate valve comprises a draining assembly, a self-cleaning assembly and a water collecting assembly, the draining assembly is located below a slag outlet of the slag hopper, a draining plate is arranged on the draining assembly and can move in a reciprocating mode in the direction perpendicular to the slag outlet so as to open or close the slag outlet, and the self-cleaning assembly is located below the slag outlet of the slag hopper. The self-cleaning assembly is arranged above the draining assembly, at least one part of the self-cleaning assembly abuts against the surface of the side, facing the residue hopper, of the draining plate, the water collecting assembly comprises a water collecting tank and a water drainage port, the water collecting tank is located below the draining assembly, and water passing through the draining plate can enter the water collecting tank; the draining assembly with the draining plate is arranged below the slag hopper, and the self-cleaning assembly is arranged between the draining plate and the slag hopper, so that moisture of slag stored in the slag hopper is discharged through the draining plate, the moisture content of the slag is reduced, coal slag on the surface of the draining plate is removed, and the draining plate is cleaned; and slag deposition and caking in the long-term use process are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coal gasification production equipment, and in particular to a self-cleaning drain plug valve for a slag hopper. Background Art

[0002] In recent years, the synthesis gas produced by the clean dry pulverized coal gasification process using coal as raw material has been widely used in coal-to-methanol, polyolefins, coal-to-oil and other fields. The coarse slag produced after the reaction of the coal gasification unit is regularly discharged to the slag lock bucket every 30-40 minutes, through the slag control process: flushing → filling → pressurization → slag collection → slag discharge. The slag scooper receives a large amount of ash and black water from the slag lock bucket through the slag discharge pipeline. Before the next slag discharge, the ash and ash water in the slag lock bucket are transported from the slag pool to the slag bucket through the slope section driven by the chain. In this process, the ash water flows back to the slag pool, and the coarse slag enters the slag bucket. A slag truck is parked under each slag bucket. Because the coarse slag has a high moisture content, the drainage time is long, which occupies vehicle resources. Due to incomplete drainage of coarse slag, the slag trucks experience serious drainage and slag spilling during transportation in and outside the factory, causing icy and slippery roads in winter and dust in summer, polluting the production environment inside the factory and roads outside the factory. The pressure on civilized production and environmental protection is relatively high. At the same time, the higher water content increases the cost of ash disposal and transportation.

[0003] In the prior art, a first drain hole with a first drain plate is provided on the hopper body and / or a second drain hole with a second drain plate is provided on the plug plate of the plug valve, so that the moisture of the slag stored in the hopper body is discharged through the first drain hole and the second drain hole, and collected through the first drain pipe and the second drain pipe, and at the same time, the slag is intercepted in the hopper body by the first drain plate and the second drain plate, which makes the slag discharged from the slag outlet no longer have a large amount of moisture. However, the slag drainage device mainly drains water by installing 8 0.2mm drain plates on the inner side of the slag bucket of the slag scoop machine through the connected water absorption plates. Due to frequent blockage of the drain plates, the drainage effect is poor; the slag water flows from the bottom gap to the ground to form a water curtain; the drain plate is installed inside the hopper, and the process is difficult to hand over; cleaning the drain plate requires maintenance personnel to enter the cone bucket, the maintenance workload is large, and the maintenance risk is high.

[0004] Therefore, there are technical problems in the prior art that the drain plate is easily clogged, difficult to clean, and has a high maintenance risk. Summary of the invention

[0005] The main purpose of the present invention is to provide a self-cleaning drain plug valve for a slag hopper to solve the technical problems in the prior art that the drain plate is easy to clog, difficult to clean and has a high maintenance risk.

[0006] In order to achieve the above object, according to one aspect of the present invention, a self-cleaning drain flapper valve for a slag hopper is provided, comprising:

[0007] A drain assembly, the drain assembly is located below the slag outlet of the slag hopper, and a drain plate is provided on the drain assembly, and the drain plate can reciprocate in a direction perpendicular to the slag outlet to open or close the slag outlet;

[0008] A self-cleaning component, the self-cleaning component is arranged above the drain component, and at least a portion of the self-cleaning component abuts against a surface of the drain plate facing the slag bucket;

[0009] A water collecting assembly comprises a water collecting trough and a drain outlet. The water collecting trough is located below the drain assembly, and water passing through the drain plate can enter the water collecting trough.

[0010] Furthermore, the drain assembly includes: a main body, which is located below the slag outlet of the hopper, and a avoidance opening for installing a drain plate is provided at a position corresponding to the slag outlet, and the drain plate is detachably connected to the main body; a driving part, which is connected to one end of the main body and can drive the main body to reciprocate in a direction perpendicular to the slag outlet.

[0011] Furthermore, the drainage assembly also includes: a mounting frame, the mounting frame is fixed to the slag bucket, the mounting frame is a frame-type structure, a slide groove is arranged parallel to the mounting frame, and a roller matching the slide groove is arranged on the main body.

[0012] Furthermore, the water collecting trough has an inclined bottom surface, and a drainage outlet is provided at the lowest position of the inclined bottom surface.

[0013] Furthermore, the water collection assembly includes: a water suction pipe, the water suction pipe is detachably connected to the drain outlet, and at least a part of the water suction pipe is a metal bellows.

[0014] Furthermore, the water suction pipe is connected to the drain outlet via an adapter, and the adapter is a 90-degree adapter.

[0015] Furthermore, a screen is provided on the drain plate, and the gap of the screen is 0.2 mm.

[0016] Furthermore, the self-cleaning component includes: a scraper, the scraper having a scraping surface arranged parallel to the drain plate, the scraping surface abutting against the drain plate; and a fixing portion, the fixing portion being used to fix the scraper.

[0017] Furthermore, the scraper is a polyurethane plate.

[0018] According to another aspect of the present invention, a slag drainage device is provided, comprising a slag hopper having a slag outlet and a gate valve capable of opening and closing the slag outlet, wherein the gate valve is the self-cleaning drain gate valve as described in any one of the aforementioned items.

[0019] By applying the self-cleaning drain gate valve provided by the present invention, a drain assembly with a drain plate is arranged under the slag hopper, which is beneficial to discharge the moisture of the slag stored in the slag hopper through the drain plate, and can effectively reduce the moisture content of the slag; by arranging a self-cleaning assembly between the drain plate and the slag hopper, the self-cleaning assembly can scrape off the coal slag adhered to the surface of the drain plate during the reciprocating motion of the drain plate, thereby cleaning the drain plate and avoiding slag accumulation and agglomeration during long-term use; using a metal corrugated hose to connect the pipeline can reduce pipeline damage caused by frequent reciprocating motion of the gate valve, which is beneficial to reducing operating costs and reducing component wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 The structure diagram of the self-cleaning drain plug valve for the slag hopper provided by the present invention is shown;

[0022] Figure 2 A top view of a self-cleaning drain flapper valve for a slag hopper provided by the present invention is shown;

[0023] Figure 3 A structural schematic diagram of the self-cleaning drain flap valve for a slag hopper provided by the present invention is shown from another perspective.

[0024] 10. Drain assembly; 11. Drain plate; 12. Main body; 20. Self-cleaning assembly; 21. Scraper; 30. Water collection assembly; 31. Water collection tank; 32. Suction pipe. DETAILED DESCRIPTION

[0025] 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 invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] 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.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0028] In order to solve the technical problems in the prior art that the gate valve is easy to clog, difficult to clean, and has a high maintenance risk, the present invention provides a self-cleaning drain gate valve for a slag hopper.

[0029] Figure 1 A schematic structural diagram of a self-cleaning drain flapper valve for a slag bucket provided by the present invention is shown. As shown in the figure, the self-cleaning drain flapper valve includes a drain component 10, a self-cleaning component 20 and a water collecting component 30, wherein the drain component 10 is located below the slag outlet of the slag bucket, and a drain plate 11 is provided on the drain component 10, and the drain plate 11 can reciprocate in a direction perpendicular to the slag outlet to open or close the slag outlet; the self-cleaning component 20 is arranged above the drain component 10, and at least a part of the self-cleaning component 20 abuts against the surface of the drain plate 11 facing the slag bucket, so that during the reciprocating movement of the drain plate 11, the self-cleaning component 20 can scrape off the coal slag adhered to the surface of the drain plate 11 to clean the drain plate 11; the water collecting component 30 includes a water collecting trough 31, and the water collecting trough 31 is located below the drain component 10, and water passing through the drain plate 11 can enter the water collecting trough 31.

[0030] By applying the self-cleaning drain plug valve provided by the present invention, a drain assembly 10 with a drain plate 11 is arranged under the slag hopper, so that the moisture of the slag stored in the slag hopper can be discharged through the drain plate 11, which can effectively reduce the moisture content of the slag in the slag hopper; a self-cleaning assembly 20 is arranged between the drain plate 11 and the slag hopper, so that during the reciprocating motion of the drain plate 11, the self-cleaning assembly 20 can scrape off the coal slag adhered to the surface of the drain plate 11, thereby cleaning the drain plate 11 and avoiding the formation of slag accumulation and agglomeration on the surface of the drain plate 11 during long-term use.

[0031] Furthermore, the drain assembly 10 also includes a main body 12 and a driving unit, wherein the main body 12 is located below the slag outlet of the hopper, and an escape opening for installing a drain plate 11 is provided at a position corresponding to the main body 12 and the slag outlet, and the drain plate 11 is detachably connected to the main body 12; the driving unit is connected to one end of the main body 12, and can drive the main body 12 to reciprocate in a direction perpendicular to the slag outlet, and the slag outlet can be opened and closed through the reciprocating motion.

[0032] Specifically, Figure 2 FIG. 1 shows a top view of a self-cleaning drain flap valve for a slag bucket provided by the present invention, as shown in FIG. Figure 2 As shown, the main body 12 is square in shape, and the avoidance opening is provided in the middle position of the square. The drain plate 11 is circular in shape, and mounting holes are provided on the circumference of the drain plate 11; preferably, the mounting holes can be set to 8 or 6, and the mounting holes are evenly arranged on the circumference of the drain plate 11. Correspondingly, fixing holes matching the mounting holes are provided on the main body 12. During assembly, fixing parts, such as countersunk bolts, can pass through the mounting holes and be fixed to the fixing holes, thereby fixing the drain plate 11 to the main body 12. Such a mechanical installation method has a simple structure and is easy to disassemble and assemble, which is conducive to the maintenance and replacement of the drain plate 11 in the later stage.

[0033] In order to improve the drainage effect, the drain plate 11 is in the form of a screen plate, and the gap of the screen plate is 0.2mm, which is conducive to separating slag from water. Such a structural setting can further reduce the moisture content of the slag. Using the drain assembly 10 provided by the present invention, the moisture content in the slag can be reduced from 20% to less than 10%, and water will no longer flow in the bottom gap.

[0034] In a specific embodiment of the present application, in order to facilitate control, the driving part adopts a hydraulic cylinder or a hydraulic air cylinder, and the free end of the hydraulic cylinder is fixed to the main body 12, so that the reciprocating motion of the free end of the hydraulic cylinder can drive the main body 12 to reciprocate; using a hydraulic cylinder as the driving part is conducive to reducing costs, and at the same time, hydraulic control also facilitates the control of the movement process of the driving part.

[0035] In order to facilitate the fixation of the main body 12, the drain component 10 also includes a mounting frame, which is fixed to the hopper. Specifically, it can be fixed to the gate valve bracket at the bottom of the hopper, so that the drain component 10 is fixed under the hopper. The mounting frame is a frame structure, and slide grooves are arranged in parallel on both sides of the mounting frame. The main body 12 is provided with rollers matching the slide grooves, so that during the reciprocating motion of the main body 12, the rollers can move in the slide grooves.

[0036] Of course, a slide rail matching the slide groove may also be provided on the body 12 , and during the reciprocating motion of the body 12 , the slide rail slides in the slide groove.

[0037] like Figure 3As shown, in order to facilitate the drainage of water in the water collection tank 31, the water collection tank 31 has an inclined bottom surface. The water entering the water collection tank 31 and the fine slag entering the water collection tank 31 together with the sewage can gather at the bottom of the water collection tank 31 along the inclined bottom surface, which is conducive to the gathering of slag at the bottom of the water collection tank 31. At the same time, a drain outlet is provided at the lowest position of the inclined bottom surface, so that the sewage and slag entering the water collection tank 31 through the drain plate 11 can be discharged through the drain outlet, avoiding blockage caused by slag accumulation.

[0038] Among them, the water collection component 30 also includes a suction pipe 32, and the suction pipe 32 is detachably connected to the drain outlet. At least a part of the suction pipe 32 is a metal bellows. The metal bellows hose is resistant to bending and has high strength. The use of metal bellows to connect the pipeline can reduce pipeline damage caused by frequent reciprocating motion of the gate valve, which is conducive to reducing operating costs and reducing component wear.

[0039] In order to facilitate installation and disassembly maintenance, the water suction pipe 32 is connected to the drain outlet through an adapter, and the adapter can be a 90-degree adapter, for example.

[0040] Furthermore, the self-cleaning component 20 includes a scraper 21 and a fixing portion, the fixing portion is used to fix the scraper 21, for example, the fixing portion can fix the scraper 21 on the outside of the slag outlet, the scraper 21 has a scraping surface arranged parallel to the drain plate 11, and the scraping surface abuts against the drain plate 11; thereby, during the reciprocating motion of the drain plate 11, the scraping surface is always abutted against the drain plate 11, thereby removing the coal slag adhered to the drain plate 11, thereby realizing the self-cleaning function of the drain plate 11.

[0041] Specifically, the scraper 21 is a polyurethane plate, and the scraper 21 can be a polyurethane plate with a thickness of 20 mm and a width of 200 mm. Since the polyurethane plate is elastic, the polyurethane plate is used as the scraper 21. While removing coal slag, the scraper 21 can avoid damaging the screen on the drain plate 11. At the same time, the elastic polyurethane plate can also prevent the hydraulic cylinder from getting stuck during the reciprocating motion.

[0042] By applying the self-cleaning drain gate valve provided by the present invention, a drain assembly 10 with a drain plate 11 is arranged under the slag hopper, which is beneficial to discharge the moisture of the slag stored in the slag hopper through the drain plate 11, and can effectively reduce the moisture content of the slag; by arranging a self-cleaning assembly 20 between the drain plate 11 and the slag hopper, the self-cleaning assembly 20 can scrape off the coal slag adhered to the surface of the drain plate 11 during the reciprocating motion of the drain plate 11, thereby cleaning the drain plate 11 and avoiding slag accumulation and agglomeration during long-term use; using a metal corrugated hose to connect the pipeline can reduce pipeline damage caused by frequent reciprocating motion of the gate valve, which is beneficial to reducing operating costs and reducing component wear.

[0043] According to another aspect of the present invention, a slag drainage device is provided, comprising a slag hopper having a slag outlet and a gate valve capable of opening and closing the slag outlet, wherein the gate valve is a self-cleaning drain gate valve as described in any one of the preceding items.

[0044] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0045] 1. Effectively solve the technical problems of the existing technology that the gate valve is easy to clog, difficult to clean, and has high maintenance risks;

[0046] 2. It can effectively collect leaked slag and prevent pipeline blockage;

[0047] 3. It is beneficial to increase the service life of the product and reduce the cost of inspection and maintenance.

[0048] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0049] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0050] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-cleaning drain flap valve for a slag hopper, characterized in that: include: A drain assembly (10), the drain assembly (10) being located below a slag outlet of the slag hopper, the drain assembly (10) being provided with a drain plate (11), the drain plate (11) being capable of reciprocating in a direction perpendicular to the slag outlet to open or close the slag outlet; A self-cleaning component (20), the self-cleaning component (20) being arranged above the drain component (10), and at least a portion of the self-cleaning component (20) being in contact with a surface of the drain plate (11) facing the slag bucket; A water collection component (30), the water collection component (30) comprising a water collection trough (31) and a drain outlet, the water collection trough (31) being located below the drain assembly (10), and water passing through the drain plate (11) can enter the water collection trough (31).

2. The self-cleaning drain gate valve for a slag hopper according to claim 1, characterized in that: The drain assembly (10) comprises: A body (12), the body (12) being located below a slag outlet of the slag bucket, a clearance opening for installing a drain plate (11) being provided at a position corresponding to the slag outlet of the body (12), and the drain plate (11) and the body (12) being detachably connected; A driving part is connected to one end of the body (12) and is capable of driving the body (12) to reciprocate in a direction perpendicular to the slag outlet.

3. The self-cleaning drain gate valve for a slag hopper according to claim 2, characterized in that: The drain assembly (10) further comprises: A mounting frame is fixed to the slag bucket, the mounting frame is a frame structure, a slide groove is arranged in parallel on the mounting frame, and a roller matching the slide groove is arranged on the body (12).

4. The self-cleaning drain gate valve for a slag hopper according to claim 1, characterized in that: The water collecting trough (31) has an inclined bottom surface, and a drainage outlet is arranged at the lowest position of the inclined bottom surface.

5. The self-cleaning drain gate valve for a slag hopper according to claim 4, characterized in that: The water collection assembly (30) comprises: A water suction pipe (32), the water suction pipe (32) is detachably connected to the drain outlet, and at least a portion of the water suction pipe (32) is a metal bellows.

6. The self-cleaning drain gate valve for a slag hopper according to claim 5, characterized in that: The water suction pipe (32) is connected to the drain outlet via an adapter, and the adapter is a 90-degree adapter.

7. The self-cleaning drain gate valve for a slag hopper according to claim 1, characterized in that: The drain plate (11) is provided with a screen, and the gap of the screen is 0.2 mm.

8. The self-cleaning drain gate valve for a slag hopper according to claim 1, characterized in that: The self-cleaning component (20) comprises: A scraper (21), the scraper (21) having a scraping surface arranged parallel to the drain plate (11), the scraping surface abutting against the drain plate (11); A fixing portion, wherein the fixing portion is used to fix the scraper (21).

9. The self-cleaning drain gate valve for a slag hopper according to claim 8, characterized in that: The scraper (21) is a polyurethane plate.

10. A slag drainage device, characterized in that: It comprises a slag hopper having a slag outlet and a gate valve capable of opening and closing the slag outlet, wherein the gate valve is the self-cleaning drain gate valve according to any one of claims 1 to 9.

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