Household garbage continuous feeding and sealed storage system

Abstract

The utility model discloses a continuous feeding and sealed storage system for household garbage. The continuous feeding and sealed storage system comprises a storage box, a first sealed gate valve, a second sealed gate valve, a spiral feeding cylinder and a discharging gate valve, the first sealing gate valve is arranged at the top of the storage box, and the second sealing gate valve is arranged at the bottom of the storage box; the feeding end of the spiral feeding cylinder is connected with the second sealing gate valve, and the discharging gate valve is arranged at a discharging port of the spiral feeding cylinder. By arranging multi-stage sealing, a large amount of air can be effectively prevented from entering the gasification equipment, and then normal operation of the gasification equipment is guaranteed; the material storage box and the spiral feeding barrel can store a large amount of garbage raw materials without affecting operation of the gasification equipment, and the requirement for the feeding amount of the gasification equipment is met.

Description

Technical Field

[0001] This utility model relates to the technical field of pyrolysis gasification feeding devices, specifically to a continuous feeding and sealed storage system for municipal solid waste. Background Technology

[0002] Pyrolysis gasification technology has a wide range of applications, capable of treating various organic wastes, including municipal solid waste, agricultural waste, and industrial waste. Through pyrolysis gasification, the organic matter in municipal solid waste can be converted into usable syngas and solid residue. Syngas can be used as fuel or chemical feedstock, while the solid residue can be used for soil improvement or the preparation of building materials, thus realizing the resource utilization of waste.

[0003] There are specific requirements for the oxygen content during the operation of a pyrolysis gasification furnace. However, to achieve continuous and stable operation of the equipment, valves must be opened to add materials. During this process, smoke may overflow or large amounts of air may enter the furnace, affecting the normal operation of the equipment.

[0004] In the prior art, CN 220345771U discloses a continuous sealed feeding device for pyrolysis, which can alleviate the problem of smoke overflow or large amounts of air entering the furnace during continuous operation of the pyrolysis gasifier (mainly when adding materials). However, when using this device, adding materials is inconvenient, and the sealing effect is limited; the storage tank has a simple structure and small storage volume, which cannot store large amounts of waste. Summary of the Invention

[0005] Therefore, this utility model provides a continuous feeding and sealed storage system for municipal solid waste, which can maintain a better sealing effect when adding materials and store waste for a short period of time.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A continuous feeding and sealed storage system for municipal solid waste includes a storage bin, a first sealing gate valve, a second sealing gate valve, a spiral feed cylinder, and a discharge gate valve. The first sealing gate valve is located at the top of the storage bin, and the second sealing gate valve is located at the bottom. The feed end of the spiral feed cylinder is connected to the second sealing gate valve, and the discharge gate valve is located at the discharge port of the spiral feed cylinder.

[0008] Furthermore, the top of the first sealing gate valve is provided with a feed inlet.

[0009] Furthermore, the first sealing gate valve, the second sealing gate valve, and the discharge gate valve are electric gate valves, hydraulic gate valves, or pneumatic gate valves; the continuous feeding and sealed storage system for domestic waste also includes a controller, which is electrically connected to the first sealing gate valve, the second sealing gate valve, and the discharge gate valve.

[0010] Furthermore, the continuous feeding and sealed storage system for domestic waste also includes a first level gauge and a second level gauge. The first level gauge is installed on the side wall of the storage tank near the first sealing gate valve, and the second level gauge is installed on the side wall of the feed end of the screw feed cylinder near the second sealing gate valve. The first level gauge and the second level gauge are respectively electrically connected to the controller.

[0011] Furthermore, the continuous feeding and sealed storage system for municipal solid waste also includes a feeding screw motor and feeding screw blades. The feeding screw motor is located outside the screw feed cylinder, and the feeding screw blades are rotatably located inside the screw feed cylinder. The feeding screw motor and the feeding screw blades are connected by a drive.

[0012] Furthermore, the continuous feeding and sealed storage system for municipal solid waste also includes a pressure sensor, which is located on the side of the gate of the discharge gate valve away from the discharge port, and the pressure sensor is electrically connected to the controller.

[0013] Furthermore, the spiral feed cylinder is provided with an openable and closable cleaning port in the middle.

[0014] This utility model has the following advantages:

[0015] This utility model provides a continuous feeding and sealed storage system for municipal solid waste. By setting up multi-stage sealing (first sealing gate valve, second sealing gate valve), it can effectively prevent a large amount of air from entering the gasification equipment, thereby ensuring the normal operation of the gasification equipment. The storage tank and screw feed cylinder can store a large amount of waste raw materials without affecting the operation of the gasification equipment, meeting the feeding requirements of the gasification equipment.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a schematic diagram of a continuous feeding and sealed storage system for municipal solid waste provided in an embodiment of the present invention.

[0020] In the diagram: 1. Storage bin; 2. First sealing cover; 3. Second sealing cover; 4. Screw feed cylinder; 5. Baffle; 6. First electric push rod; 7. First level gauge; 8. Second electric push rod; 9. Second level gauge; 10. Feed screw motor; 1001. Drive mechanism; 1002. Coupling; 11. Feed screw blades; 12. Inlet; 13. Third electric push rod; 14. Outlet; 15. Support; 16. Cleaning port; 17. Pressure sensor. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] like Figure 1 As shown, this embodiment provides a continuous feeding and sealed storage system for municipal solid waste, including a storage tank 1, a first sealing gate valve, a second sealing gate valve, a spiral feed cylinder 4, and a discharge gate valve; the storage tank 1 is provided with the first sealing gate valve at its top and the second sealing gate valve at its bottom; the feed end of the spiral feed cylinder 4 is connected to the second sealing gate valve, and the discharge gate valve is provided at the discharge port 14 of the spiral feed cylinder 4.

[0023] This embodiment provides a continuous feeding and sealed storage system for municipal solid waste. By setting up multi-stage sealing (first sealing gate valve, second sealing gate valve), it can effectively prevent a large amount of air from entering the gasification equipment, thereby ensuring the normal operation of the gasification equipment. The storage tank 1 and the screw feed cylinder 4 can store a large amount of waste raw materials without affecting the operation of the gasification equipment, meeting the feeding requirements of the gasification equipment.

[0024] In this embodiment, the storage bin 1 is vertically oriented, and its structure is not particularly specified, as long as it has sufficient space to store the amount of waste added at one time. Preferably, the storage bin 1 can be configured as a rectangular chamber, which makes it easier for waste to fall inside the storage bin 1 and slide into the spiral feed cylinder 4. Optionally, the storage bin 1 is configured with an inverted trapezoidal chamber (i.e., a chamber that is larger at the top and smaller at the bottom), and the side wall of the storage bin 1 forms a 70° angle with the horizontal.

[0025] In this embodiment, the top of the first sealing gate valve is provided with a feed inlet 12. Exemplarily, the feed inlet 12 is a funnel-shaped hopper, which facilitates receiving the domestic waste material transferred from the previous process and allowing the material to slide into the storage box 1.

[0026] In this embodiment, the first sealing gate valve, the second sealing gate valve, and the discharge gate valve are electric gate valves, hydraulic gate valves, or pneumatic gate valves. For example, when the first sealing gate valve, the second sealing gate valve, and the discharge gate valve are electric gate valves: the first sealing gate valve includes a first sealing cover plate 2 and a first electric push rod 6. The first electric push rod 6 causes the first sealing cover plate 2 to slide horizontally at the connection between the storage tank 1 and the inlet 12, opening or closing the first sealing cover plate 2 to control the entry of the crushed municipal solid waste into the storage tank 1; the second sealing gate valve includes a second sealing cover plate 3 and a second electric push rod 8. The second electric push rod 8 causes the second sealing cover plate 3 ... The second sealing cover 3 slides horizontally at the connection between the storage tank 1 and the feed end of the screw feed cylinder 4, opening or closing to control the entry of crushed domestic waste into the screw feed cylinder 4. The discharge gate valve includes a baffle 5 and a third electric push rod 13. The third electric push rod 13 causes the baffle 5 to slide vertically at the discharge port 14 of the screw feed cylinder 4, opening or closing the baffle 5 to control the discharge of crushed domestic waste from the discharge port 14 (during discharge, a feed screw motor 10 and feed screw blades 11 are also required, see below). The first sealing gate valve, the second sealing gate valve, and the discharge gate valve are electrically connected to the controller and open or close under the control of the controller. When a hydraulic gate valve is used, the electric push rod is replaced with a hydraulic rod; when a pneumatic gate valve is used, the electric push rod is replaced with a pneumatic push rod. The controller controls the air inlet and outlet valves of the hydraulic rod or the pneumatic push rod. Optionally, the first sealing gate valve, the second sealing gate valve, and the discharge gate valve are manual gates.

[0027] In this embodiment, the continuous feeding and sealed storage system for domestic waste further includes a first level gauge 7 and a second level gauge 9. The first level gauge 7 is disposed on the side wall of the storage tank 1 near the first sealing gate valve, and the second level gauge 9 is disposed on the side wall of the feed end of the screw feed cylinder 4 near the second sealing gate valve. The first level gauge 7 and the second level gauge 9 are respectively electrically connected to the controller. The level gauge can be mechanical, tuning fork, or capacitive. In this embodiment, a mechanical type is used. An AC motor drives the detection blades to rotate slowly. When the material level rises close to full, the rotation of the blades is blocked by the material, and the main shaft of the detection mechanism rotates. This sends a signal indicating that there is material or that the device is full, and cuts off the power to the AC motor to stop its rotation. This state will continue as long as the material level in the silo remains unchanged. The signal indicating that there is material or that the device is full is transmitted to the controller, which controls the operation of the first and second sealing gate valves. Specifically, when the first level gauge 7 sends a signal indicating that there is material or that the device is full, the first sealing cover 2 changes from open to closed. When the second level gauge 9 sends a signal indicating that there is material or that the device is full, the second sealing cover 3 changes from open to closed. Through the level gauges and their electrical connection with the controller, the material level in the silo (storage box 1, screw feed cylinder 4) is always at the highest level, further ensuring the silo's airtightness and effectively preventing external air from entering the pyrolysis gasification equipment.

[0028] In this embodiment, the lower part of the second sealing gate valve is connected to the feed end of the spiral feed cylinder 4. The feed end of the spiral feed cylinder 4 is an inverted trapezoidal structure chamber. This shape is more conducive to the garbage sliding from the storage box 1 into the spiral feed cylinder 4, and the garbage is less likely to get stuck during the sliding process.

[0029] In this embodiment, the continuous feeding and sealed storage system for municipal solid waste further includes a feeding screw motor 10 and feeding screw blades 11. The feeding screw motor 10 is disposed outside the screw feeding cylinder 4, and the feeding screw blades 11 are rotatably disposed inside the screw feeding cylinder 4. The feeding screw motor 10 and the feeding screw blades 11 are connected by a drive mechanism. For example, the screw feeding cylinder 4 is arranged horizontally, with its upper part near the left end being its feeding end; the feeding screw motor 10 is disposed at the left end of the screw feeding cylinder 4, and its motor shaft is connected to a coupling 1002 via a drive mechanism 1001; the left end of the feeding screw blades 11 extends from the left end of the screw feeding cylinder 4 and is connected to the coupling 1002. The feeding screw blades 11 are selected as shaftless screws, which can prevent soft plastics in the municipal solid waste from tangling around the screw shaft, effectively avoiding the occurrence of waste feeding jams. Waste material enters the screw feed cylinder 4, and the screw blades 11 push it towards the discharge port 14, stopping in front of the baffle 5 (at this time, the baffle 5 is in the closed state). The screw feed cylinder 4 is full of material, the second material level gauge 9 senses the alarm, and the second sealing cover 3 changes from the open state to the closed state.

[0030] In this embodiment, a pressure sensor 17 is provided on the side of the gate of the discharge gate valve away from the discharge port 14. The pressure sensor 17 is electrically connected to the controller. The pressure sensor 17 is used to prevent excessive material in the screw feed cylinder 4 and excessive pressure on the baffle 5, which prevents it from opening normally. After an alarm is triggered, the feeding equipment is controlled to stop feeding. A closable cleaning port 16 is provided in the middle of the screw feed cylinder 4. During discharge, the third electric push rod 13 pulls out the baffle 5, the feeding screw motor 10 starts, and drives the feeding screw blades 11 to rotate and discharge the material. At the same time, after the second level gauge 9 detects that the material level has dropped, the second electric push rod 8 pulls out the second sealing cover 3, and the domestic waste in the storage box 1 begins to fall into the screw feed cylinder 4 and enters the pyrolysis gasification equipment under the action of the feeding screw blades 11. When material discharge is obstructed, control the feed screw motor 10 to reverse, which will drive the feed screw blades 11 to reverse, thus relieving the material pressure at the jammed part. If the jam is severe, open the cleaning port 16 on the screw feed cylinder 4 to clean out some material, and then reverse to unblock.

[0031] In this embodiment, supports 15 are symmetrically arranged at the bottom of the spiral feed cylinder 4 to ensure the stability of the spiral feed cylinder 4.

[0032] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A continuous feeding and sealed storage system for municipal solid waste, characterized in that, It includes a storage tank (1), a first sealing gate valve, a second sealing gate valve, a spiral feed cylinder (4), and a discharge gate valve; the storage tank (1) is provided with the first sealing gate valve at the top and the second sealing gate valve at the bottom; the feed end of the spiral feed cylinder (4) is connected to the second sealing gate valve, and the discharge gate valve is provided at the discharge port (14) of the spiral feed cylinder (4).

2. The continuous feeding and sealed storage system for municipal solid waste according to claim 1, characterized in that, The first sealing gate valve is provided with an inlet (12) at the top.

3. The continuous feeding and sealed storage system for municipal solid waste according to claim 1, characterized in that, The first sealing gate valve, the second sealing gate valve, and the discharge gate valve are electric gate valves, hydraulic gate valves, or pneumatic gate valves; the continuous feeding and sealed storage system for domestic waste also includes a controller, which is electrically connected to the first sealing gate valve, the second sealing gate valve, and the discharge gate valve.

4. The continuous feeding and sealed storage system for municipal solid waste according to claim 3, characterized in that, The continuous feeding and sealed storage system for domestic waste also includes a first level gauge (7) and a second level gauge (9). The first level gauge (7) is located on the side wall of the storage tank (1) near the first sealing gate valve, and the second level gauge (9) is located on the side wall of the feed end of the screw feed cylinder (4) near the second sealing gate valve. The first level gauge (7) and the second level gauge (9) are respectively connected to the controller via electrical signals.

5. The continuous feeding and sealed storage system for municipal solid waste according to claim 3, characterized in that, The continuous feeding and sealed storage system for domestic waste also includes a feeding screw motor (10) and a feeding screw blade (11). The feeding screw motor (10) is located outside the screw feed cylinder (4), and the feeding screw blade (11) is rotatably located inside the screw feed cylinder (4). The feeding screw motor (10) and the feeding screw blade (11) are connected by a drive.

6. The continuous feeding and sealed storage system for municipal solid waste according to claim 5, characterized in that, The continuous feeding and sealed storage system for domestic waste also includes a pressure sensor (17), which is located on the side of the gate of the discharge gate valve away from the discharge port (14) and is electrically connected to the controller.

7. The continuous feeding and sealed storage system for municipal solid waste according to claim 1, characterized in that, The spiral feed cylinder (4) is provided with an openable and closable cleaning port (16) in the middle.

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