Grid gate structure of leachate discharge port of dump pit

Abstract

The utility model provides a grating gate structure of a landfill leachate discharge port. A grating gate is convenient to overhaul, maintain and replace, economical and safe. The device comprises a grating gate device, the grating gate device comprises a guide grating gate, and the grating gate is arranged on a leachate outlet of the dump pit; the grating gate device is characterized by further comprising a guide rail column, a guide rail and a lifting system, the guide rail columns are vertically fixed on the side wall of the dump pit; the guide rail is vertically fixed to the guide rail column, and the grating gate is installed on the guide rail in a sliding mode. The lifting system is connected with the grating gate and comprises a hoisting steel wire rope and a traction machine; the hoisting steel wire rope is connected with the grating gate, and the tractor is connected with the hoisting steel wire rope; the number of the grating gate devices is two, grating gates of the two grating gate devices are arranged inside and outside, the grating gate on the inner side is close to the garbage pit side, and the grating gate on the outer side is close to the leachate collecting channel side.

Description

Technical Field

[0001] The utility model relates to a grille gate structure for a garbage pit leachate discharge outlet. Background Art

[0002] The moisture content of urban domestic waste in my country is generally 30%-60%. In order to reduce the moisture content of waste before incineration, improve incineration efficiency and ensure incineration quality, waste incineration power plants usually require the waste to be stored in the garbage pool for 5-7 days before incineration to reduce the moisture content of the waste, increase the calorific value of the waste entering the furnace, and ensure that the power plant can operate efficiently. During this storage and fermentation process, the moisture in the garbage will precipitate. This sewage that seeps out after the garbage is piled up is collectively referred to as leachate. These leachates are collected by a special collection system and treated uniformly before they can be reused or discharged. In order to achieve solid-liquid separation of domestic waste, the bottom of the garbage pool is generally set with a slope of not less than 1% in the width direction, sloping towards the side of the discharge door. A certain size of opening will be left on the side wall at the bottom of the discharge door as the outlet for the leachate from the garbage pit. The outlet for the leachate from the garbage pit is equipped with a steel grating with evenly distributed holes to filter the leachate from the garbage. The leachate screen is one of the important components in the leachate drainage system. The garbage leachate is discharged through the screen to the leachate collection channel and then collected in the leachate collection pool. Since the composition of domestic garbage is very complex, including textile fibers, rubber and plastics and other components with high flexibility and toughness, during the use of the garbage pit, the leachate may pass through the screen holes along with the leachate and get stuck in the screen holes, forming a blockage. When the blockage range is large, it will seriously affect the separation efficiency of the garbage leachate and reduce the combustion efficiency of the garbage. Therefore, the leachate screen should be cleaned in time when it is blocked.

[0003] At present, the drainage outlet of the garbage pit mainly adopts a single grille fixing scheme, and the single grille plate is fixed to the notch with bolts. This scheme is very inconvenient to clean when the grille plate is blocked, and personnel need to enter the collection corridor, which poses a safety hazard. In addition, when the single-layer grille plate is used to clean the grille plate, the garbage piled inside the garbage pit is at risk of collapsing and sliding into the leachate collection channel. The leakage of garbage will cause a sharp increase in the subsequent cleaning costs. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a reasonably designed grille gate structure for a garbage pit leachate outlet, which is convenient, economical and safe to inspect, maintain and replace.

[0005] The technical solution adopted by the present utility model to solve the above problems is as follows: A grid gate structure for the leachate discharge outlet of a garbage pit, comprising a grid gate device, the grid gate device includes a guiding grid gate, and the grid gate is arranged on the leachate discharge outlet of the garbage pit; characterized in that: the grid gate device further includes a guide rail column, a guide rail and a lifting system; the guide rail column is vertically fixed on the side wall of the garbage pit; the guide rail is vertically fixed on the guide rail column, and the grid gate is slidably installed on the guide rail; the lifting system is connected to the grid gate, and the lifting system includes a hoisting steel wire rope and a traction machine; the hoisting steel wire rope is connected to the grid gate, and the traction machine is connected to the hoisting steel wire rope; there are two sets of the grid gate devices, and the grid gates of the two sets of grid gate devices are arranged inside and outside, wherein the inner grid gate is close to the garbage pit side, and the outer grid gate is close to the leachate collection channel side.

[0006] The present utility model installs anti-collision angle steel at the corners of the guide rail column.

[0007] A bearing lifting plate is fixed in the middle of the grid gate of the present utility model, and the hoisting steel wire rope is connected to the bearing lifting plate.

[0008] The lifting system of the present utility model further includes a pulley block, and the pulley block is connected to the hoisting steel wire rope.

[0009] The present utility model further includes a grid gate support column, which is located behind the grid gate close to the leachate collection channel side, and the grid gate support column is used to support the grid gate.

[0010] A force-transmitting steel pad block is arranged between the inner and outer grid gates of the present utility model.

[0011] The force-transmitting steel pad block of the present utility model is fixed on the grid gate close to the leachate collection channel side.

[0012] The present utility model further includes a grid gate anti-collision beam, which is arranged in front of the grid gate close to the garbage pit side.

[0013] Anti-collision angle steel is arranged on the grid gate anti-collision beam of the present utility model.

[0014] A cutting head is installed inside the grid gate anti-collision beam of the present utility model.

[0015] Compared with the prior art, the present utility model has the following advantages and effects:

[0016] (1) The present utility model adopts a hoistable grid gate, avoiding the safety hazards caused by personnel entering the garbage pit for maintenance.

[0017] (2) The present utility model adopts a double grid gate. When one grid gate is lifted for maintenance, the other grid gate can prevent the garbage piled up inside the garbage pit from collapsing and sliding into the leachate collection channel.

[0018] (3) Compared with the traditional method of the leachate outlet, the grille gate is convenient, economical and safe for overhaul, maintenance and replacement, greatly saving the overhaul time of the leachate discharge outlet and accelerating the efficiency of garbage treatment. Description of the Drawings

[0019] Figure 1 and Figure 2 are all partial structural schematic diagrams of the embodiments of the present utility model.

[0020] Figure 3 is a sectional structural schematic diagram of the embodiment of the present utility model.

[0021] Figure 4 is a planar structural schematic diagram of the embodiment of the present utility model.

[0022] Figure 5 is a partial elevation structural schematic diagram of the embodiment of the present utility model.

[0023] Figure 6 is a structural schematic diagram of the grille gate device of the embodiment of the present utility model. Detailed Description of the Embodiments

[0024] The present utility model will be further described in detail below in conjunction with the drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0025] The embodiment of the present utility model includes a grille gate device, a grille gate support column 2 and a grille gate anti-collision beam 3.

[0026] The grille gate device includes a guide rail column 1, a guide rail 4, a grille gate 7 and a lifting system.

[0027] The grille gate 7 is arranged on the leachate discharge outlet 5 of the garbage pit. The hole size and the anti-corrosion material requirements of the grille gate 7 can be analyzed and selected according to the garbage components in the garbage pit of the applied project.

[0028] The guide rail column 1 is vertically fixed on the side wall of the garbage pit and protrudes from the side wall of the garbage pit, with a height from the bottom of the garbage pit to the top of the car stop in the unloading hall. The guide rail column 1 can also serve as a buttress column, serving as the main stress member of the garbage pit and the main support member of the guide rail. The part protruding from the side wall of the garbage pit needs to use anti-corrosion and wear-resistant high-strength concrete, and a certain amount of fiber can be incorporated to increase its strength. In order to avoid damage to the guide rail column 1 during the process of the grabber grabbing garbage, anti-collision angle steel 6 is installed at the corner of the guide rail column 1.

[0029] The guide rail 4 is vertically fixed on the guide rail column 1, and the grille gate 7 is slidably installed on the guide rail 4. The guide rail 4 needs to be made of anti-corrosion and wear-resistant stainless steel material and needs to be embedded in the guide rail column 1 before the guide rail column 1 is poured.

[0030] The lifting system is connected to the grid gate 7. The lifting system includes a hoisting wire rope 14, a pulley block 11, and a tractor 8.

[0031] A load-bearing hanging plate 13 is welded and fixed in the middle of the grid gate 7, which is used to transfer the vertical lifting load and the horizontal side pressure of the garbage received by the grid gate 7. The hoisting wire rope 14 is connected to the load-bearing hanging plate 13, thereby realizing the connection between the hoisting wire rope 14 and the grid gate 7; the hoisting wire rope 14 needs to be made of high-strength, high-toughness, and corrosion-resistant materials, and a hook needs to be set at the front end of the hoisting wire rope 14. The hook is connected to the lifting ring on the load-bearing hanging plate 13 of the grid gate 7.

[0032] The tractor 8 is installed on the beam of the unloading hall, and the tractor 8 is connected to the hoisting wire rope 14. The hoisting wire rope 14 is wound around the rear end of the tractor 8 and connected to the anti-falling ground anchor 15 in the unloading hall; the lifting load of the tractor 8 is determined in combination with the final grid plate specifications.

[0033] The pulley block 11 is connected to the hoisting wire rope 14, which plays a role in bearing and guiding the hoisting wire rope 14. The structure for installing the pulley block 11 can be the unloading port doorframe beam 10. The pulley block 11 is installed on the unloading port doorframe beam 10 of the garbage pit. Among them, the tangent line of the pulley responsible for bearing on the side near the garbage pit needs to be aligned with the center connection line of the guide rail 4 to ensure the verticality of the hoisting wire rope 14 and the grid gate 7 during the hoisting process; high-strength and corrosion-resistant materials are also required for all parts of the load-bearing pulley. The pulley responsible for guiding needs to be adjusted in combination with the installation position of the final electric tractor 8 and the installation position of the load-bearing pulley to ensure that the wire rope does not collide with the support beam of the pulley block.

[0034] There are two sets of grid gate devices. The grid gates 7 of the two sets of grid gate devices are arranged inside and outside. The inner grid gate 7 is close to the garbage pit side, and the outer grid gate 7 is close to the leachate collection channel side. The guide rail columns 1 of the two sets of grid gate devices can be combined into one.

[0035] The grid gate support column 2 is arranged on the leachate discharge outlet 5 of the garbage pit and is fixed on the bottom plate of the garbage pit. The grid gate support column 2 is located behind the grid gate 7 on the side close to the leachate collection channel. The grid gate support column 2 is used to support the grid gate 7. The grid gate support column 2 needs to be arranged in combination with the column spacing of the guide rail column 1, and the column spacing of the grid gate support column 2 needs to be less than the maximum use span of the grid gate 7 under the action of the rated garbage side pressure.

[0036] Considering the gap between the grille gate 7 and the guide rail 4 during use, a force transmission steel pad 9 is arranged between the inner and outer grille gates 7. The force transmission steel pad 9 is welded and fixed on the grille gate 7 close to the leachate collection channel side. After the pressure on the garbage side is transmitted to the grille gate 7 close to the garbage pit side, it is transmitted to the force transmission steel pad 9 through the load-bearing hanger 13. The force transmission steel pad 9 transmits the load to the grille gate support column 2 through the load-bearing hanger 13 on the grille gate 7 close to the leachate collection channel side.

[0037] The grille gate anti-collision beam 3 is arranged on the leachate discharge port 5 of the garbage pit and fixed on the side wall of the garbage pit. The grille gate anti-collision beam 3 is located in front of the grille gate 7 close to the garbage pit side. The grille gate anti-collision beam 3 is used to protect the grille gate 7 and prevent the damage to the grille gate 7 by the garbage grab during use. The grille gate anti-collision beam 3 is provided with anti-collision angle steels 6 above and below, and a cutter head 12 is also installed on the inner side of the grille gate anti-collision beam 3 to prevent the textile fibers, rubber and plastics and other high-flexibility and high-toughness garbage entangled with the grille gate 7 from pulling the grille gate 7 during the lifting process of the grille gate 7.

[0038] When in use, the grille gates 7 of the two sets of grille gate devices are arranged on the garbage pit leachate discharge port 5 to filter the garbage leachate. When there is a lot of garbage on one of the grille gates 7, causing the holes of the grille gate 7 to be blocked, the grille gate 7 can be lifted by the traction machine 8 for cleaning and replacement.

[0039] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A grille gate structure for a garbage pit leachate outlet, comprising a grille gate device, the grille gate device comprising a guide grille gate, the grille gate being arranged on the garbage pit leachate outlet; characterized in that: The grille gate device also includes a guide rail column, a guide rail and a lifting system; the guide rail column is vertically fixed on the side wall of the garbage pit; the guide rail is vertically fixed on the guide rail column, and the grille gate is slidably installed on the guide rail; the lifting system is connected to the grille gate, and the lifting system includes a lifting wire rope and a traction machine; the lifting wire rope is connected to the grille gate, and the traction machine is connected to the lifting wire rope; the grille gate device is divided into two sets, and the grille gates of the two sets of grille gate devices are arranged inside and outside, wherein the inner grille gate is close to the garbage pit side, and the outer grille gate is close to the leachate collection channel side.

2. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: Anti-collision angle steels are installed at the corners of the guide rail columns.

3. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: A load-bearing hanging plate is fixed in the middle of the grille gate, and a lifting wire rope is connected to the load-bearing hanging plate.

4. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: The lifting system also includes a pulley block, which is connected to the lifting wire rope.

5. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: It also includes a grille gate support column, which is located behind the grille gate close to the leachate collection channel side and is used to support the grille gate.

6. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: A force-transmitting steel pad is arranged between the inner and outer grille gates.

7. The grating gate structure for the garbage pit leachate outlet according to claim 6, characterized in that: The force transmission steel pad is fixed on the grille gate close to the leachate collecting channel side.

8. The grating gate structure for the garbage pit leachate outlet according to claim 1, characterized in that: It also includes a grille gate anti-collision beam, which is arranged in front of the grille gate close to the garbage pit side.

9. The grating gate structure for the garbage pit leachate outlet according to claim 8, characterized in that: The anti-collision angle steel is arranged on the anti-collision beam of the grille gate.

10. The grating gate structure for the garbage pit leachate outlet according to claim 8, characterized in that: A cutter head is installed on the inner side of the anti-collision beam of the grille gate.

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