Multi-stage sealing adjustable bar valve, deslagging system and garbage gasification furnace

Abstract

The utility model provides a multistage sealing adjustable bar valve, a deslagging system and a garbage gasifier, and relates to the technical field of garbage gasifiers, the multistage sealing adjustable bar valve comprises a closed cavity I, a closed cavity II, a closed cavity III, a telescopic module and a plurality of bars, through holes allowing bars to pass through are formed between the first closed cavity and the second closed cavity and between the second closed cavity and the third closed cavity, a telescopic execution piece of the telescopic module extends into the third closed cavity, and a sliding sealing structure is arranged between the telescopic execution piece and the third closed cavity; according to the scheme, the multi-stage sealing bar valve device suitable for controlling the slag discharging amount through the garbage gasification liquid seal is provided, through arrangement of multi-stage sealing, dynamic executing mechanism sealing of gasification air high pressure and liquid seal is achieved, continuous adjustable slag discharging under the high pressure of gasification slag is achieved, the gasification working atmosphere environment can be further optimized, and the slag discharging amount is controlled. The problems of large resistance of gasification air and supply of oxygen required by gasification combustion in gasification engineering of the gasification furnace are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage gasification furnace technical field especially is multistage sealing adjustable stick valve and deslagging system and garbage gasification furnace. BACKGROUND

[0002] In the air supply system of the garbage gasification furnace, in order to increase the reaction intensity of the gasification furnace, one of the solutions is to use a high-pressure air supply system for gasification air supply, at this time, the deslagging system of the furnace bottom should meet the pressure requirement to avoid the escape of gasification air from the deslagging system, which causes uneven gasification reaction, partial burning, and further affects the furnace condition and production capacity. In the process of realizing the requirement of double sealing of slag sealing and liquid sealing for the high-pressure air supply system, it is necessary to realize continuous and controllable deslagging in the garbage gasification furnace, therefore, in addition to the requirement of high static sealing for the control valve provided in the material sliding system, it is also necessary to solve the problems of sealing and liquid leakage in the opening and closing process of the valve, and to meet the complex deslagging conditions of garbage gasification deslagging. In view of the above problems, the present application is proposed. SUMMARY

[0003] The utility model discloses a multistage sealing adjustable stick valve and deslagging system and garbage gasification furnace, design a kind of multistage sealing adjustable stick valve suitable for garbage gasification liquid seal control deslagging quantity, solve dynamic sealing and pressure-bearing problem in the process of implementation action, realize the continuous deslagging and adjustable effect of garbage gasification.

[0004] To solve the above problems, the utility model provides multistage sealing adjustable stick valve, including closed cavity one, closed cavity two, closed cavity three, telescopic module and a plurality of stick, it is provided with the through -hole for stick to pass between the closed cavity one and the closed cavity two, between the closed cavity two and the closed cavity three, the telescopic module's telescopic executor extends to the closed cavity three, it is provided with sliding seal structure between the telescopic executor and closed cavity three, the telescopic executor is connected with stick, and the stick extends to closed cavity one through through -hole, and the stick has gap between the stick, wherein closed cavity one is used to be connected with the deslagging channel of garbage gasification furnace, each closed cavity can be formed by profile and steel sheet welding, and closed cavity one, closed cavity two, closed cavity three form multistage sealing, realize dynamic sealing effect and pressure-bearing problem in the process of stick action, realize the continuous deslagging and adjustable effect of garbage gasification.

[0005] According to an embodiment of the utility model, the clearance fit between the stick and the through -hole can block the small slag from entering the closed cavity two, and a self-cleaning pressing plate is arranged at the through -hole, the self-cleaning pressing plate is preferably made of polytetrafluoroethylene, and can be a rubber plate, the self-cleaning pressing plate is arranged on both sides of the through -hole to press the stick, and can clean the ash on the stick.

[0006] According to an embodiment of the utility model, the gap between the rod and the through hole is 0.5-1mm, which can effectively prevent most slag from entering the closed cavity two.

[0007] According to an embodiment of the utility model, the self-cleaning pressing plate is provided with a dust blocking soft plate, which can further prevent fine slag from entering the closed cavity two.

[0008] According to an embodiment of the utility model, the sliding sealing structure comprises a packing sealing mechanism, and the packing on the packing sealing mechanism is used for sealing, so that the liquid seal liquid in the closed cavity three is prevented from overflowing or running out.

[0009] According to an embodiment of the utility model, the packing sealing mechanism is provided with a pressing device, which is used for further pressing the packing in the packing sealing mechanism, and the pressing device can adopt a pressing bolt, so that the leakage rate is further reduced by fastening the pressing bolt.

[0010] According to an embodiment of the utility model, the sliding sealing structure comprises a gas source and a carbon ring sealing structure, and the gas source is used for providing pressure to the carbon ring sealing structure to realize sealing.

[0011] Preferably, the gas source adopts a nitrogen source, and the gas source is connected with the carbon ring sealing structure through a pressure regulating valve.

[0012] According to an embodiment of the utility model, the closed cavity two and / or the closed cavity three are provided with a detachable plate body, preferably a steel plate, which is convenient for maintenance.

[0013] Preferably, the telescopic module adopts a combination of a push rod and a driving device.

[0014] A slag discharge system solves the dynamic sealing problem in a high-pressure slag discharge system through a multi-stage sealing, wherein the multi-stage sealing comprises slag sealing, liquid sealing and packing sealing / carbon ring nitrogen sealing, the slag discharge system comprises a gasification furnace slag discharge hopper, a slag discharge chute, a liquid seal slag discharge device and the above multi-stage sealing adjustable rod valve, the gasification furnace slag discharge hopper is connected with the slag discharge chute, the slag discharge chute is connected with a closed cavity one, the multi-stage sealing adjustable rod valve controls the slag discharge amount of the slag discharge chute to the liquid seal slag discharge device by using a rod, the liquid seal slag discharge device is used for conveying the slag discharged from the slag discharge chute, and at least the slag discharge chute and the liquid seal slag discharge device are provided with liquid seal, the closed cavity one is directly contacted with the slag and the liquid seal liquid, so that the closed cavity one is filled with the slag and the liquid seal liquid.

[0015] Further, the liquid seal is used for water and exists slag at the gasification furnace slag discharge hopper, the slag discharge chute and the liquid seal slag discharge device, the slag realizes primary slag sealing, and the water realizes secondary liquid sealing.

[0016] A garbage gasification furnace comprises the above slag discharge system.

[0017] The utility model discloses a beneficial effect is, the scheme provides a kind of multistage sealing bar valve device suitable for garbage gasification liquid seal control slag discharge quantity, by setting multistage sealing, realize gasification wind high pressure, the dynamic actuator seal of liquid seal, realize the continuous adjustable slag under the high pressure of gasification furnace slag, can further optimize gasification working atmosphere environment, solve the problem of the supply of gasification wind resistance and gasification combustion required oxygen in gasification furnace gasification engineering. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model is further described below in connection with the drawings and examples.

[0019] Figure 1 It is the overall structure schematic diagram of slagging system;

[0020] Figure 2 It is the structure schematic diagram of multistage sealing adjustable bar valve of setting a group of telescopic module;

[0021] Figure 3 It is the structure schematic diagram of multistage sealing adjustable bar valve of setting two groups of telescopic module;

[0022] Figure 4 It is the structure schematic diagram of packing seal mechanism;

[0023] Figure 5 It is the structure schematic diagram of carbon ring sealing structure;

[0024] 1. gasification furnace slagging hopper;2. slagging material pipe;3. multistage sealing adjustable bar valve;31. steel plate;4. liquid seal slagging device;10. bar;11. butt joint;12. closed cavity one;13. closed cavity two;14 self-cleaning pressing plate;15. closed cavity three;16. bar rod;17. push rod;18. sealing interface;19. packing seal mechanism;191. compression bolt;192. packing;20. nitrogen source;21. pressure regulating valve;22. carbon ring sealing structure;221. carbon ring;23. mounting bracket;24 drive device. DETAILED DESCRIPTION

[0025] The following description is only for disclosing the utility model so that those skilled in the art can implement the utility model. The examples in the following description are only as examples, and those skilled in the art can think of other obvious modifications. The basic principles of the utility model defined in the following description can be applied to other embodiments, modification schemes, improvement schemes, equivalent schemes and other schemes without departing from the spirit and scope of the utility model.

[0026] The slag discharge temperature of the garbage gasification furnace slag discharge port is 200-300 DEG C, the slag discharge area of the synchronous gasification furnace is provided with a gasification air supply system which can penetrate the slag layer, and the gasification air is 160-250 DEG C heated and pressurized air. The gasification air penetrates the slag layer into the combustion layer to provide the oxygen required for garbage carbonization and gasification. At the same time, the gasification air is provided, and because the slag discharge channel is communicated with the air supply channel, the air sealing problem needs to be solved to avoid the escape of the gasification air from the slag discharge system. The gasification air pressure is 1000-30000 pa, which can be selected, and in order to realize the slag discharge amount control, wind pressure bearing, garbage slag sealing weight and other problems of the slag discharge system, the control valve provided in the slag discharge chute system is required to have dynamic control and sealing requirements.

[0027] Multi-stage sealing adjustable rod strip valve, such as Figures 1-2 The multi-stage sealing adjustable rod strip valve 3 is full-welded by profiles and steel plates, wherein a closed cavity 12 is formed, the closed cavity 12 is directly contacted with the slag and the liquid seal liquid, and therefore the closed cavity 12 is filled with the slag and the liquid seal liquid.

[0028] A closed cavity 13 is formed by the profiles, steel plates and sealing pads, the closed cavity 13 is a primary sealing cavity, a circular through hole through which the rod strip 10 passes is arranged on the profile of the cavity, the through hole is an operation channel of the rod strip 10, and the cooperation gap is preferably 0.5-1 mm, which can effectively seal most of the slag from entering the closed cavity 13, and a self-cleaning pressing plate 14 can be arranged on the side of the through hole, the self-cleaning pressing plate 14 is preferably made of polytetrafluoroethylene, and then made of rubber plate, and a dust blocking soft plate can be arranged on one side of the self-cleaning pressing plate 14 according to requirements, which can further block the fine slag from entering the closed cavity 13.

[0029] The rod strip 10 mainly uses the opening and closing degree to bear the slag, and can also adjust the amount of the slag falling into the liquid seal slag discharge device 4.

[0030] The upper and lower steel plates 31 of the closed cavity 13 can be disassembled and assembled through fasteners for maintenance.

[0031] The push rod 17 and the driving device 24 constitute a telescopic module, wherein the telescopic rod of the push rod 17 is a telescopic execution member.

[0032] A closed cavity 15 is formed by the profiles, steel plates and sealing pads, the closed cavity 15 is a space for the connecting mechanism of the rod strip rod 16 and the push rod 17, and is also a working space for the whole rod strip operation stroke, the push rod 17 completes the telescopic work in the closed cavity 15, and then controls the rod strip rod 16 to complete the whole working process. The rod strip rod 16 and the push rod 17 can be arranged in one group or multiple groups according to the requirements of the interface 11, Figure 2 Figure 3 The interface 11 is a circular port, the area is small, and one telescopic module is arranged, Figure 2 and the interface 11 is a circular port, the area is small, and one telescopic module is arranged,Figure 3 The square butt joint 11 is used in the middle, has a larger area, and is provided with two groups of telescopic modules.

[0033] The stick bar 16 is connected with the push rod 17 through hinging, the stick bar 16 is connected with the stick bar 10, and the upper and lower steel plates 31 of the closed cavity three 15 are connected through fasteners and can be disassembled for maintenance.

[0034] The sealing interface 18 on one side of the closed cavity three 15 is connected with the push rod 17 through a hole, and a sliding sealing structure is arranged at the hole.

[0035] The sliding sealing structure can be selected as a packing sealing mechanism 19 or a carbon ring sealing structure 22.

[0036] When the packing sealing mechanism 19 is adopted, the push rod 17 is telescopic during work, the packing 192 in the packing sealing mechanism 19 is used for sealing, so that the liquid sealant in the closed cavity three 15 is prevented from overflowing or running out of gas; preferably, a pressing device is arranged, the pressing device adopts a pressing bolt 191, the packing is pressed by the fastening of the pressing bolt, and the leakage rate is further reduced, and the packing is regularly updated to realize sealing.

[0037] When the carbon ring sealing structure 22 is adopted, the nitrogen source 20 is preferably used in cooperation, the nitrogen source 20 provides a nitrogen source with pressure, the carbon ring 221 in the carbon ring sealing structure 22 is pressurized through the pressure regulating valve 21 to realize more accurate sealing, and the nitrogen pressure used for carbon ring sealing is slightly higher than the leakage pressure.

[0038] At this time, through the sealing of the two-stage cavities of the closed cavity two 13 and the closed cavity three 15 and the further sealing of the sliding sealing structure, the liquid sealant and the gasified wind will not overflow through the valve, and the multi-stage sealing adjustable stick valve 3 realizes the overall function. The mounting bracket 23 is a mounting bracket of the driving device 24, the driving device 24 provides power for the working action, and the electric-hydraulic is preferred, followed by the hydraulic, and finally the electric.

[0039] The slag discharge system is as shown in Figure 1 The slag discharge hopper 1 of the gasification furnace stores the slag discharged from the gasification furnace after combustion, falls into the slag discharge hopper 1 of the gasification furnace from top to bottom at a certain temperature, and naturally accumulates to a certain height in the slag discharge hopper 1 of the gasification furnace to realize preliminary slag sealing.

[0040] The slag discharge hopper 1 of the gasification furnace is welded and sealed with the slag discharge chute 2, the slag discharge chute 2 mainly naturally discharges the slag in the slag discharge hopper 1 of the gasification furnace to the liquid seal slag discharge device 4, the multi-stage sealing adjustable stick valve 3 is arranged on the slag discharge chute 2 and is close to the liquid seal slag discharge device 4, and the slag is conveniently discharged.

[0041] The main function of the multi-stage sealed adjustable bar valve 3 is to control the amount of slag falling from the gasifier slag hopper 1 and slag discharge pipe 2 to the liquid-sealed slag discharge device 4. The liquid-sealed slag discharge device 4 is set at the bottom of the gasifier to transport the slag to the ground, thereby realizing the entire slag discharge process.

[0042] The gasifier slag hopper 1, slag discharge pipe 2, and liquid seal slag discharge device 4 all contain slag and liquid seal water. The slag is mainly used to achieve primary slag sealing, and the effective liquid seal height is between end face A and end face B, which achieves secondary liquid seal.

[0043] During operation, the slag is first scraped by a slag scraper into the slag discharge hopper 1 of the gasifier for storage. The scraper preferably scrapes continuously. The conveying capacity of the liquid-sealed slag discharge device 4 is not less than the amount of slag scraped off by the scraper. The liquid-sealed slag discharge device 4 is preferably operated continuously, but intermittent operation is also possible.

[0044] The multi-stage sealed adjustable bar valve 3 is equipped with several bars 10. The main function of the bars 10 is to use the opening and closing degree to support the weight of the slag on the gasifier slag hopper 1 and slag discharge pipe 2. At the same time, it can also adjust the amount of slag falling into the liquid-sealed slag discharge device 4, so as to avoid the heavy weight of slag from being carried on the liquid-sealed slag discharge device 4, causing blockage and overload of the liquid-sealed slag discharge device 4. There are gaps between the bars 10, which can effectively allow some slag to fall naturally into the liquid-sealed slag discharge device 4, and can better control the entire slag discharge process.

[0045] The liquid-sealed slag discharge device 4 is preferably a screw conveyor, and secondly a scraper conveyor.

[0046] In operation, the gasifier slag hopper 1, slag discharge pipe 2, multi-stage sealed adjustable bar valve 3, and liquid-sealed slag discharge device 4 are all filled with liquid sealing liquid. Among them, the interface 11 is the interface through which the slag of the multi-stage sealed adjustable bar valve 3 communicates with the slag discharge pipe 2, and can be set according to the shape of the slag discharge pipe 2.

[0047] A waste gasification furnace includes the aforementioned slag removal system.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A multi-stage sealing adjustable bar valve, characterized in that: The device includes a first closed cavity (12), a second closed cavity (13), a third closed cavity (15), a telescopic module, and several bars (10). The first closed cavity (12) and the second closed cavity (13), as well as the second closed cavity (13) and the third closed cavity (15), are provided with through holes for the bars (10) to pass through. The telescopic actuator of the telescopic module extends into the third closed cavity (15). A sliding sealing structure is provided between the telescopic actuator and the third closed cavity (15). The telescopic actuator is connected to the bars (10). The bars (10) extend into the first closed cavity (12) through the through holes. There are gaps between the bars (10).

2. The multi-stage sealing adjustable bar valve according to claim 1, characterized in that: The bar (10) and the through hole are in clearance fit, and at least some of the through holes are provided with self-cleaning pressure plates (14).

3. The multi-stage sealing adjustable bar valve according to claim 2, characterized in that: The gap between the bar (10) and the through hole is set to 0.5~1mm.

4. The multi-stage sealing adjustable bar valve according to claim 2 or 3, characterized in that: The self-cleaning pressure plate (14) is provided with a dust-blocking soft plate.

5. The multi-stage sealing adjustable bar valve according to any one of claims 1-3, characterized in that: The sliding seal structure includes a packing seal mechanism (19).

6. The multi-stage sealing adjustable bar valve according to claim 5, characterized in that: A pressing device is provided at the packing sealing mechanism (19) to further press the packing in the packing sealing mechanism (19).

7. The multi-stage sealing adjustable bar valve according to any one of claims 1-3, characterized in that: The sliding seal structure includes a gas source and a carbon ring seal structure (22), wherein the gas source is used to provide pressure to the carbon ring seal structure (22).

8. The multi-stage sealing adjustable bar valve according to any one of claims 1-3, characterized in that: The enclosed cavity two (13) and / or enclosed cavity three (15) are provided with detachable plates.

9. A slag discharge system, characterized in that: The device includes a gasifier slag hopper (1), a slag discharge pipe (2), a liquid-sealed slag discharge device (4), and a multi-stage sealed adjustable bar valve (3) as described in any one of claims 1-8. The gasifier slag hopper (1) is connected to the slag discharge pipe (2), and the slag discharge pipe (2) is connected to a closed cavity (12). The multi-stage sealed adjustable bar valve (3) uses bars (10) to control the amount of slag discharged from the slag discharge pipe (2) to the liquid-sealed slag discharge device (4). The liquid-sealed slag discharge device (4) is used to transport the slag discharged from the slag discharge pipe (2). At least the slag discharge pipe (2) and the liquid-sealed slag discharge device (4) are equipped with liquid seals.

10. A waste gasification furnace, characterized in that: Includes the slag discharge system as described in claim 9.

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