Sealing structure for closing door of blanking groove of household garbage incinerator

Abstract

The utility model relates to a blanking groove of a household garbage incinerator, in particular to a sealing structure of a closing door of the blanking groove of the household garbage incinerator. The utility model relates to a sealing structure for a blanking groove closing door of a household garbage incinerator, and aims to provide the sealing structure for the blanking groove closing door of the household garbage incinerator, which can effectively realize the sealing of the blanking groove closing door, and is simple in structure and lower in cost so as to facilitate the transformation of various garbage incinerators which are put into production. The utility model discloses a sealing structure of a closing door of a blanking groove of a household garbage incinerator. Comprising a feeding hopper and a water-cooling chute which are communicated up and down, a door frame arranged at the junction part of the feeding hopper and the water-cooling chute, a closing door which can be positioned at the junction part in a swinging manner so as to be matched with opening and closing, and a hydraulic oil cylinder for realizing opening or sealing of the closing door by driving a crank, and is characterized in that the door frame is arranged at the junction part; the door frame is provided with an elastic sealing material which can be extruded with the closing door, so that the sealing of the closing door can be realized when the closing door is closed.

Description

Technical Field

[0001] This utility model relates to a material feeding chute for a municipal solid waste incinerator, specifically a sealing structure for the closing door of the material feeding chute for a municipal solid waste incinerator. Background Technology

[0002] Mechanical reciprocating grates in waste incinerators offer advantages such as large processing capacity, no need for waste pretreatment, complete and stable combustion, low fly ash, and low loss on ignition, making them the mainstream technology for municipal solid waste incineration in my country. Two-stage reciprocating grates, in particular, boast advantages such as small footprint, high mechanical load, and low ash leakage, occupying a significant market share and achieving substantial economic and social benefits, contributing to the resource utilization of municipal solid waste. Currently, the feed chute of municipal solid waste incinerators primarily relies on the waste within the chute for sealing. The closing door is driven by a hydraulic cylinder and used only in emergencies, with low requirements for sealing performance. The closing door and door slot have a hard contact, lacking a strict seal. However, with advancements in technology, municipal solid waste incinerators are no longer permitted to enter during start-up, shutdown, and temperature rise / fall phases. This necessitates strengthening the sealing performance of the closing door; otherwise, significant air leakage will disrupt the incinerator's start-up and shutdown, increasing fuel consumption.

[0003] In view of this, there is an urgent need to provide a sealing structure suitable for the closing door of the feed chute of a municipal solid waste incinerator, so that it can be applied to new projects and also to old projects for low-cost retrofitting. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology and provide a sealing structure for the closing door of the material chute of a municipal solid waste incinerator. This sealing structure should be able to effectively seal the closing door of the material chute, and should be simple in structure and low in cost, so as to facilitate the transformation of various types of waste incinerators that have been put into operation.

[0005] The technical solution provided by this utility model is:

[0006] A sealing structure for a closing door of a feed chute in a municipal solid waste incinerator includes a feed hopper and a water-cooled chute connected vertically, a door frame located at the junction of the feed hopper and the water-cooled chute, a closing door that is pivotally positioned at the junction for opening and closing, and a hydraulic cylinder that opens or seals the closing door by driving a crank. The key feature is that the junction has a door frame, and the door frame is provided with an elastic sealing material that can be pressed against the closing door, thereby achieving a seal when the closing door is closed.

[0007] The door frame includes four sealing brackets arranged sequentially end to end. Each sealing bracket has a groove on the side facing the closed door, and the elastic sealing material fills the groove.

[0008] The four sealing supports include a front sealing support disposed on the front wall of the feed hopper, a rear sealing support disposed on the rear front wall of the feed hopper, and two side sealing supports disposed on the side walls of the two feed hoppers.

[0009] The front sealing bracket includes a first steel plate arranged perpendicular to the front wall of the feed hopper and parallel to the door frame, and a second steel plate that is perpendicular to and fixed to the first steel plate, thereby forming the groove at the door frame portion of the front wall of the feed hopper.

[0010] The rear sealing bracket includes a third steel strip arranged parallel to the rear wall of the feed hopper and the door frame, a fourth steel strip arranged parallel to the door frame and inclined to the third steel strip, and a reinforcing steel strip fixed between the third steel strip and the fourth steel strip, thereby forming the groove at the door frame part of the rear wall of the feed hopper.

[0011] The side sealing bracket includes a groove seat arranged parallel to the door frame and formed by three steel strips, and a reinforcing steel strip connecting the side wall of the feed hopper and the groove seat, thereby forming the groove at the door frame portion of the side wall of the feed hopper.

[0012] The elastic sealing material is high-temperature resistant rubber.

[0013] The beneficial effects of this invention are as follows: Due to the inclusion of an elastic sealing material that can contact the closing door, the sealing performance of the closing door is significantly enhanced, air leakage is eliminated, and fuel consumption and production costs are significantly reduced. Furthermore, it allows for the modification of existing material chutes at minimal cost. Practical application has proven that this invention has high application advancement and promotion value. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure along the AA direction (sectional view).

[0016] Figure 3 for Figure 1 A magnified schematic diagram of part B in the diagram.

[0017] Figure 4 for Figure 1 A magnified structural diagram of part C in the diagram.

[0018] Figure 5 This is a schematic diagram of the closing door structure of the feed chute of an existing waste incinerator.

[0019] Numbered in the diagram: 1. Side wall of feed hopper; 2. Front wall of feed hopper; 3. Closing door; 4. Rear wall of feed hopper; 5. Closing door drive crank; 6. Hydraulic cylinder; 7. Water-cooled chute; 8. Side sealing bracket; 9. Groove seat; 9.1. Reinforcing steel strip; 9.2. Front sealing bracket; 10. First steel strip; 10.1. Second steel strip; 10.2. Rear sealing bracket; 11. Third steel strip; 11.1. Fourth steel strip; 11.2. Reinforcing steel strip; 11.3. Second steel strip; 10.2. Sealing material; 12. Detailed Implementation

[0020] The following description, in conjunction with the embodiments shown in the accompanying drawings, provides further details.

[0021] Depend on Figure 5 It can be seen that the feed chute of the municipal solid waste incinerator includes a feed hopper and a water-cooled chute 8 connected vertically. The feed hopper is formed by a front wall 2, a rear wall 4, and two side walls 1, and cooperates with a closing door 3 located at the junction of the feed hopper and the water-cooled chute for opening and closing. The closing door shaft 5, the closing door drive crank 6, the hydraulic cylinder 7, and the water-cooled chute 8 are all located on the rear wall of the feed hopper. The hydraulic cylinder drives the crank, which in turn drives the closing door shaft to swing, thereby opening and closing the closing door.

[0022] Because the closing door makes hard contact with the side and front walls of the feed hopper in the closed state, but not with the rear wall of the feed hopper, it cannot effectively prevent cold air from entering the furnace. This causes the furnace temperature to drop, requiring more fuel to maintain the furnace temperature, resulting in significant waste and increasing the operating costs of the waste incineration power plant.

[0023] The present invention makes the following improvements:

[0024] A door frame is provided at the junction, and an elastic sealing material that can be squeezed against the closed door is provided on the door frame. The elastic sealing material can contact and cooperate with the closed door, thereby achieving a seal when the closed door is closed.

[0025] The door frame includes four sealing brackets arranged sequentially end to end. The four sealing brackets include a front sealing bracket on the front wall of the feed hopper, a rear sealing bracket on the rear wall of the feed hopper, and two side sealing brackets on the side walls of the two feed hoppers. The side of each sealing bracket facing the closed door has a groove, which is filled with an elastic sealing material. The elastic sealing material is preferably high-temperature resistant rubber.

[0026] like Figure 3As shown: The front sealing bracket includes a first steel strip 10.1 and a second steel strip 10.2; the first steel strip is perpendicular to the front wall of the feed hopper and parallel to the door frame, and is welded and fixed to the door frame portion on the back of the front wall of the feed hopper; the second steel strip is perpendicular to and welded and fixed to the first steel strip, thereby forming the groove in the door frame portion of the front wall of the feed hopper for filling the sealing material 12.

[0027] like Figure 4 As shown: The rear sealing bracket includes a third steel strip 11.1, a fourth steel strip 11.2, and a reinforcing steel strip 11.3; the third steel strip is arranged parallel to the door frame and fits against the rear wall of the feed hopper, and is then welded and fixed to the rear wall of the feed hopper; the fourth steel strip is arranged parallel to the door frame and inclined to the third steel strip, and is then welded and fixed to the third steel strip; the reinforcing steel strip is arranged parallel to the door frame and is inserted between the third and fourth steel strips before being welded and fixed to the two steel strips; thereby forming the groove at the door frame part of the rear wall of the feed hopper for filling with sealing material.

[0028] like Figure 2 As shown: The side sealing bracket includes a groove seat arranged parallel to the door frame and a reinforcing steel strip connecting the side wall of the feed hopper and the groove seat, thereby forming the groove on the side wall of the feed hopper cavity. The groove seat is formed by three steel strips enclosing a groove for filling with sealing material, and then is integrally welded to the rear wall of the feed hopper.

[0029] The working principle of this utility model is as follows: When in operation, the closing door 3 is closed under the drive of the hydraulic cylinder 7, and the required sealing effect is achieved by squeezing the elastic sealing material filled in the sealing bracket.

Claims

1. A sealing structure for a closing door of a feed chute in a municipal solid waste incinerator, comprising a feed hopper and a water-cooled chute (8) connected vertically, a door frame disposed at the junction of the feed hopper and the water-cooled chute, a closing door pivotally positioned at the junction for opening and closing, and a hydraulic cylinder that opens or seals the closing door by driving a crank, characterized in that: A door frame is provided at the junction, and an elastic sealing material that can be squeezed against the closed door is provided on the door frame, so as to achieve a seal when the closed door is closed; The door frame includes four sealing brackets arranged sequentially end to end. Each sealing bracket has a groove on the side facing the closed door, and the elastic sealing material fills the groove.

2. The sealing structure of the closing door of the material chute of the municipal solid waste incinerator according to claim 1, characterized in that: The four sealing supports include a front sealing support (10) disposed on the front wall of the feed hopper, a rear sealing support (11) disposed on the rear front wall of the feed hopper, and two side sealing supports (9) disposed on the side walls of the two feed hoppers.

3. The sealing structure of the closing door of the material chute of the municipal solid waste incinerator according to claim 2, characterized in that: The front sealing bracket includes a first steel plate (10.1) arranged perpendicular to the front wall of the feed hopper and parallel to the door frame, and a second steel plate (10.2) arranged perpendicular to and fixed to the first steel plate, thereby forming the groove at the door frame portion of the front wall of the feed hopper.

4. The sealing structure of the closing door of the material chute of the municipal solid waste incinerator according to claim 3, characterized in that: The rear sealing bracket includes a third steel strip (11.1) arranged parallel to the rear wall of the feed hopper and the door frame, a fourth steel strip (11.2) arranged parallel to the door frame and inclined to the third steel strip, and a reinforcing steel strip (11.3) fixed between the third steel strip and the fourth steel strip, thereby forming the groove at the door frame portion of the rear wall of the feed hopper.

5. The sealing structure of the closing door of the feed chute of a municipal solid waste incinerator according to claim 4, characterized in that: The side sealing bracket includes a groove seat arranged parallel to the door frame and formed by three steel strips, and a reinforcing steel strip connecting the side wall of the feed hopper and the groove seat. The groove seat is surrounded by three steel strips to form a groove for filling with sealing material, thereby forming the groove at the door frame portion of the side wall of the feed hopper.

6. The sealing structure of the closing door of the feed chute of a municipal solid waste incinerator according to claim 5, characterized in that: The elastic sealing material is high-temperature resistant rubber.

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