Equipment and method for producing combustible gas from municipal solid waste

Abstract

The present invention relates to the field of conversion technology, and specifically to an equipment and method for preparing combustible gas from domestic waste. The equipment comprises a shell, a V-shaped baffle is installed inside the shell, two crankshafts are symmetrically rotated and connected inside the shell, the upper surfaces of the two inclined surfaces of the V-shaped baffle are both in contact with shovel plates, fixed plates are installed in the middle of the upper ends of the two shovel plates, the two fixed plates are movably installed on the outer ends of the curved parts on the two crankshafts, the front end surfaces of the two shovel plates are both recessed backwards to form a first through groove, two auxiliary shafts are symmetrically arranged inside the shell, a first linkage part is installed at the left end of the shell, and the upper part of the first linkage part is connected to the auxiliary part, and the left ends of the two crankshafts are connected to the lower part of the first linkage part. This design realizes a flipping up and down tossing motion of granular domestic waste, improves the uniform heating effect of the granular domestic waste, effectively reduces the preparation time of combustible gas, and effectively ensures the rapid preparation of combustible gas.

Description

Technical Field

[0001] The present invention relates to equipment and method for preparing combustible gas from domestic garbage, belonging to the technical field of conversion. Background Art

[0002] Domestic waste has become one of the main sources of pollution. Traditional methods for domestic waste treatment mainly include landfill, incineration and land reclamation, but these treatment methods can still cause pollution. At present, the harmless treatment of domestic waste has received great attention. Generally, equipment for preparing combustible gas from domestic waste is used to treat domestic waste. At present, when domestic waste is treated, domestic waste is generally collected in a centralized manner, then crushed, and then formed into particles. The granular domestic waste is then put into the equipment and pyrolyzed under oxygen-free high-temperature conditions to produce combustible pyrolysis gas, which can replace natural gas to generate electricity and produce steam, so that domestic waste can be recycled and reused.

[0003] However, the granular domestic waste put into the equipment is in a piled state, causing the outer surface of the piled granular domestic waste to be exposed to heat radiation first, while the granular domestic waste inside the pile will be blocked by the external granular domestic waste and cannot be effectively exposed to heat radiation, resulting in uneven heating of the piled granular domestic waste, which will affect the preparation time of combustible gas. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a device and method for preparing combustible gas from domestic waste.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a device for preparing combustible gas from domestic waste, comprising a shell, wherein the shell is rotatably connected to a high-temperature rotary heater, and the high-temperature rotary heater is arranged horizontally, a U-shaped frame is installed at the left end of the shell, and an auxiliary part is rotatably connected to the shell, and the auxiliary part extends out of the left side of the shell and extends into the U-shaped frame, and the auxiliary part is located outside the high-temperature rotary heater, a first driving device is installed at the left end of the U-shaped frame, and the output shaft of the first driving device passes through the U-shaped frame and the auxiliary part and is connected to the rotating part of the high-temperature rotary heater, a V-shaped baffle is installed inside the shell, and the V-shaped baffle is arranged to be wide at the top and narrow at the bottom, and the V-shaped baffle is located at the lower side of the auxiliary part;

[0006] The two crankshafts are symmetrically connected and rotated inside the shell, and the two crankshafts are located between the V-shaped baffle and the auxiliary part. The upper surfaces of the two inclined surfaces of the V-shaped baffle are both in contact with the shovel plate, and the two shovel plates are in a V-shaped structure with a wide upper part and a narrow lower part. A fixed plate is installed in the middle of the upper ends of the two shovel plates, and the two fixed plates are movably installed on the outer ends of the curved parts on the two crankshafts. The front end surfaces of the two shovel plates are both recessed backward to form a first through groove, and the first through groove passes through the shovel plate. Two auxiliary shafts are symmetrically arranged inside the shell, and the two auxiliary shafts respectively pass through the two first through grooves, and the auxiliary shafts are slidably connected to the first through grooves;

[0007] The first linkage part is installed at the left end of the shell, and the upper part of the first linkage part is connected to the auxiliary part, the left ends of the two crankshafts are connected to the lower part of the first linkage part, and the second linkage part is arranged at the right end of the shell. The rotating part of the high-temperature rotary heater passes through the shell and is connected to the upper part of the second linkage part, and the right ends of the two crankshafts are connected to the lower part of the second linkage part. A slag discharge part is arranged at the lower end of the shell, and the upper end of the slag discharge part passes through the shell and is connected to the V-shaped baffle.

[0008] Furthermore, the slag discharge part includes a slag discharge shell, which is installed at the lower end of the shell body and extends out of the left side of the shell body. A slag discharge pipe is connected to the left edge of the lower end of the slag discharge shell, and the slag discharge pipe is arranged vertically. Lifting columns are installed at the four corners of the lower end of the shell body, and the lifting columns are arranged vertically. The lifting columns are located outside the slag discharge shell.

[0009] A spiral rod is rotatably connected inside the slag discharge shell, and the spiral rod is arranged along the length direction of the slag discharge shell. A second driving device is installed at the right end of the slag discharge shell, and the output shaft of the second driving device is connected to the spiral rod. The lower end surface of the V-shaped baffle is recessed upward to form a second through groove, and the second through groove penetrates the V-shaped baffle. A rectangular cylinder with a first control valve is arranged in the middle of the lower end of the V-shaped baffle, and the rectangular cylinder is connected to the second through groove. The lower end of the rectangular cylinder passes through the shell and is connected to the slag discharge shell.

[0010] Furthermore, the second linkage member includes a third gear, which is connected to the rotating part of the high-temperature rotary heater and is located on the right side of the shell. A second synchronous belt is arranged on the right side of the shell. The third gear is meshed on the top inner side of the second synchronous belt. The bottom inner side of the second synchronous belt is symmetrically meshed with two second gears. The right ends of the two crankshafts pass through the shell and are respectively connected to the two second gears.

[0011] Further, the auxiliary part includes an outer cylinder, which is rotatably connected inside the shell and is located outside the high-temperature rotary heater. The outer cylinder passes through the shell and extends into the U-shaped frame. The output shaft of the first driving device passes through the U-shaped frame and the outer cylinder and is connected to the rotating part of the high-temperature rotary heater. The outer end surface of the lower part of the outer cylinder is recessed inward to form an open groove, and the open groove is connected to the inner cavity of the outer cylinder. The open groove is located in the shell. The outer end surface of the outer cylinder is equidistantly installed on multiple straight plates, and the multiple straight plates are all located in the shell. The straight plates are arranged along the length direction of the outer cylinder, and the straight plates are located outside the open groove.

[0012] Furthermore, the first linkage member includes a first ring gear, which is installed on the outer end of the outer cylinder and is located in the U-shaped frame. A first synchronous belt is arranged on the left side of the shell, and the first synchronous belt passes through the U-shaped frame. The first ring gear is meshed on the top inner side of the first synchronous belt, and the bottom inner side of the first synchronous belt is symmetrically meshed with two first gears, and the two first gears are both located on the lower side of the U-shaped frame. The left ends of the two crankshafts pass through the shell and are respectively connected to the two first gears.

[0013] Furthermore, a feeding pipe with a second control valve is installed in the middle of the upper end of the shell, the upper end of the feeding pipe is connected to a hopper, the upper end of the shell is connected to an exhaust pipe with a one-way valve, and the other end of the exhaust pipe is connected to an exhaust device, the exhaust pipe is located on the front side of the hopper, and the upper end of the shell is connected to an exhaust pipe with a one-way valve, and the exhaust pipe is located on the rear side of the hopper.

[0014] A method for preparing combustible gas from domestic waste, using any of the above-mentioned equipment for preparing combustible gas from domestic waste, comprising the following steps:

[0015] The first step is pretreatment, which involves crushing the collected domestic waste and shaping the crushed domestic waste into particles with a diameter of less than 10 mm, thereby obtaining granular domestic waste;

[0016] The second step is to load the materials. First, close the first control valve, and then put the granular domestic garbage into the hopper, so that the granular domestic garbage in the hopper enters the shell through the loading pipe and falls into the V-shaped baffle. Then close the second control valve, and then extract the air in the shell through the exhaust pipe, so that the internal space of the shell forms an oxygen-free environment.

[0017] The third step is pyrolysis. First, the circuit of the high-temperature rotary heater is connected, and then the rotating part of the high-temperature rotary heater is rotated by the first driving device, so that the high-temperature rotary heater generates heat, and then a high temperature is formed in the shell, so that the granular domestic waste in the V-shaped baffle is pyrolyzed under high-temperature conditions without oxygen, thereby obtaining combustible gas. At the same time, the rotation of the rotating part of the high-temperature rotary heater will cause the third gear to rotate, and under the transmission of the second synchronous belt and the two second gears, the two crankshafts rotate synchronously, and with the assistance of two fixed plates and two auxiliary shafts, the two shovel plates shovel and throw the granular domestic waste in the V-shaped baffle, thereby assisting the pyrolysis operation and allowing the generated combustible gas to be discharged through the outlet pipe.

[0018] Beneficial effects of the present invention:

[0019] 1. Through the first motor and the high-temperature rotary heater, on the one hand, the granular domestic waste can be pyrolyzed, and on the other hand, the third gear is driven to rotate, and the granular domestic waste in the V-shaped baffle is shoveled and thrown through the second synchronous belt, two second gears, two crankshafts, two auxiliary shafts, two first through grooves, two fixed plates and two shovel plates, so that the shovel structure formed by the crankshaft, the fixed plate and the shovel plate can make the granular domestic waste perform a flipping up and down throwing motion in the shell, and the design of the shovel structure can improve the space utilization rate, effectively reduce the volume of the shell, improve the uniform heating effect of the granular domestic waste, effectively reduce the preparation time of combustible gas, and effectively ensure the rapid preparation of combustible gas.

[0020] 2. Through two crankshafts, two first gears, a synchronous belt and a first ring gear, the outer cylinder, the open groove and a plurality of straight plates are rotated, and the outer cylinder and the crankshaft are moved synchronously, so that the thrown granular domestic waste is isolated from the high-temperature rotary heater by the outer cylinder, and the probability of the thrown granular domestic waste adhering to the outer surface of the high-temperature rotary heater is effectively reduced, and the probability of the granular domestic waste being coked and spontaneously combusted due to adhesion and high temperature is effectively reduced, and the probability of polluted gas generation is effectively reduced, and the quality of the prepared combustible gas is effectively guaranteed, and the granular domestic waste floating due to the throwing is dispersed by the rotating multiple straight plates, and the probability of heat radiation being blocked by the floating granular domestic waste is effectively reduced, so as to effectively ensure the rapid preparation of combustible gas and the pyrolysis effect of the granular domestic waste.

[0021] 3. The V-shaped filter plate is rotated by the third motor, the rotating gear, the second ring gear and the two mounting cylinders. On the one hand, normal loading operation is realized, effectively ensuring the subsequent normal pyrolysis operation of the granular domestic waste. On the other hand, the V-shaped filter plate is used to block the granular domestic waste moving upward, effectively reducing the probability of the granular domestic waste being mixed with the combustible gas and being discharged. On the one hand, the probability of the occurrence of blockage in the gas outlet pipe is effectively reduced, and on the other hand, the quality of the prepared combustible gas is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 This is a schematic structural diagram of an apparatus for preparing combustible gas from domestic waste according to the present invention;

[0024] Figure 2 A front view of a device for preparing combustible gas from domestic waste according to the present invention;

[0025] Figure 3 A three-dimensional diagram of a device for preparing combustible gas from domestic waste according to the present invention;

[0026] Figure 4 A cross-sectional view of a device for preparing combustible gas from domestic waste according to the present invention;

[0027] Figure 5 for Figure 4 Sectional view along AA direction;

[0028] Figure 6 This is an assembly diagram of a V-shaped baffle and two shovel plates in a device for preparing combustible gas from domestic waste according to the present invention;

[0029] Figure 7 A three-dimensional diagram of a crankshaft in a device for preparing combustible gas from domestic waste according to the present invention;

[0030] Figure 8 A three-dimensional diagram of a shovel plate in a device for preparing combustible gas from domestic waste according to the present invention;

[0031] Fig. 9 This is an assembly diagram of a first motor, an outer cylinder and a high-temperature rotary heater in a device for preparing combustible gas from domestic waste according to the present invention;

[0032] Fig.10 A three-dimensional diagram of an outer cylinder in a device for preparing combustible gas from domestic waste according to the present invention;

[0033] Fig.11 A schematic diagram of another embodiment of an apparatus for preparing combustible gas from domestic waste according to the present invention;

[0034] Fig.12 for Fig.11 A cross-sectional view of

[0035] Fig.13 for Fig.12 Cross-sectional view along the BB direction;

[0036] Fig.14 The present invention is a stereoscopic diagram of a V-shaped filter plate in a device for preparing combustible gas from domestic waste.

[0037] In the figure: 1, shell, 2, first gear, 3, slag shell, 4, first motor, 5, outer cylinder, 6, shovel plate, 7, V-shaped baffle, 11, lifting column, 12, feeding pipe, 13, air outlet pipe, 14, hopper, 15, exhaust pipe, 21, first synchronous belt, 22, second gear, 23, crankshaft, 31, slag pipe, 32, second motor, 33, screw rod, 34, rectangular cylinder, 41, U-shaped frame, 51, first ring gear, 52, second synchronous belt, 53, third gear, 54, open groove, 55, high temperature rotary heater, 56, straight plate, 61, fixed plate, 62, first through groove, 63, auxiliary shaft, 71, second through groove, 101, third motor, 102, rotating gear, 103, second ring gear, 104, installation cylinder, 105, V-shaped filter plate. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] Embodiment 1: Figure 1-Figure 9 As shown, a device for preparing combustible gas from domestic waste is provided, comprising a shell 1, four lifting columns 11 arranged vertically and located outside the slag discharge shell 3 are respectively installed at four corner positions of the lower end of the shell 1, and the four lifting columns 11 are used together to lift the shell 1, and a feeding pipe 12 with a second control valve is connected and installed on the middle part of the upper end of the shell 1, and a hopper 14 is connected and arranged with the shell 1 through the feeding pipe 12, and then the hopper 14 is connected and installed on the upper end of the feeding pipe 12, and the feeding operation is realized through the hopper 14, and an exhaust pipe 15 with a one-way valve located at the front side of the hopper 14 and arranged in communication with the exhaust device at the other end is connected and arranged on the upper end of the shell 1, and the air in the shell 1 is extracted through the exhaust pipe 15, and then an exhaust pipe 13 with a one-way valve located at the rear side of the hopper 14 is connected and installed on the upper end of the shell 1, and the combustible gas generated in the shell 1 is discharged through the exhaust pipe 13;

[0040] The two transverse parts of the U-shaped frame 41 are both installed on the left end of the housing 1, and the U-shaped frame 41 is used to provide a mounting carrier for the first driving device, and the high-temperature rotary heater 55 arranged in a transverse manner is rotatably connected to the inside of the housing 1, and the heat generation operation is realized through the high-temperature rotary heater 55, and then the fixed part of the first driving device whose output shaft passes through the U-shaped frame 41 and is connected to the rotating part of the high-temperature rotary heater 55 is installed on the left end of the U-shaped frame 41, and the rotating part of the high-temperature rotary heater 55 is driven to rotate through the first driving device, so that the high-temperature rotary heater 55 generates heat, and the first driving device can use the first motor 4;

[0041] A V-shaped baffle 7, which is arranged to be wide at the top and narrow at the bottom and is located at the lower side of the high-temperature rotary heater 55, is installed inside the shell 1. The V-shaped baffle 7 is used to lift the granular domestic waste, and the two crankshafts 23 located between the V-shaped baffle 7 and the high-temperature rotary heater 55 are symmetrically rotated and connected inside the shell 1. The two crankshafts 23 are used in conjunction to make the two fixed plates 61 toss. Then, two shovel plates 6 of a V-shaped structure, which are arranged to be wide at the top and narrow at the bottom, are respectively attached to the upper surfaces of the two inclined surfaces of the V-shaped baffle 7. The two shovel plates 6 are used in conjunction to perform a tossing operation on the granular domestic waste located in the V-shaped baffle 7, and two fixed plates 61, which are respectively movably installed on the outer ends of the curved parts of the two crankshafts 23, are respectively installed on the middle parts of the upper ends of the two shovel plates 6, and the shovel plates 6 are connected to the crankshafts 23 through the fixed plates 61.

[0042] The front end surfaces of the two shovel plates 6 are both recessed backward to form a first through slot 62 that penetrates the shovel plates 6. Through the first through slot 62, the auxiliary shaft 63 can penetrate the shovel plates 6. The two auxiliary shafts 63 that penetrate the two first through slots 62 and are slidably connected to the first through slots 62 are symmetrically arranged inside the housing 1. The first through slot 62 and the auxiliary shaft 63 are used in conjunction with each other to limit the connection between the shovel plates 6 and the housing 1.

[0043] The third gear 53 located on the right side of the housing 1 and connected to the rotating part of the high-temperature rotary heater 55 is meshed with the top of the second synchronous belt 52 located on the right side of the housing 1. The two second gears 22 are rotated along with the rotation of the third gear 53 through the second synchronous belt 52. The two second gears 22 are symmetrically meshed with the bottom of the second synchronous belt 52. The right ends of the two crankshafts 23 pass through the housing 1 and are respectively connected to the two second gears 22. The two second gears 22 are used in conjunction with each other to make the two crankshafts 23 rotate synchronously.

[0044] The slag discharge shell 3 extending from the left side of the shell 1 is installed on the lower end of the shell 1, and the slag discharge shell 3 is used to provide a mounting carrier for the spiral rod 33 and other components, and the vertically arranged slag discharge pipe 31 is connected and arranged at the left edge position of the lower end of the slag discharge shell 3, and the residue is discharged outward through the slag discharge pipe 31, and then the spiral rod 33 arranged along the length direction of the slag discharge shell 3 is rotatably connected to the inside of the slag discharge shell 3, and the residue moves to the left along the slag discharge shell 3 through the spiral rod 33;

[0045] The fixing part of the second driving device connecting the output shaft and the screw rod 33 is installed on the right end of the slag discharge shell 3, and the screw rod 33 is driven to rotate by the second driving device. The second driving device can adopt a second motor 32, and a second through groove 71 penetrating through the V-shaped baffle 7 is formed on the lower end surface of the V-shaped baffle 7. The V-shaped baffle 7 is connected to the rectangular tube 34 through the second through groove 71, and a rectangular tube 34 connected to the second through groove 71 and having a first control valve and a lower end passing through the shell 1 and connected to the slag discharge shell 3 is arranged on the middle part of the lower end of the V-shaped baffle 7, and the second through groove 71 is connected to the slag discharge shell 3 through the rectangular tube 34.

[0046] When in use, granular domestic waste made of domestic waste is put into the hopper 14, so that the granular domestic waste enters the housing 1 through the feeding pipe 12 and falls into the V-shaped baffle 7, and then the second control valve is closed, and then the air in the housing 1 is extracted through the exhaust pipe 15, so that the granular domestic waste in the V-shaped baffle 7 is in an oxygen-free environment;

[0047] Then, the circuit of the high-temperature rotary heater 55 is connected, and the first motor 4 is started, thereby driving the rotating part in the high-temperature rotary heater 55 to rotate, and then the high-temperature rotary heater 55 generates heat, so that the granular domestic waste in the V-shaped baffle 7 is in an oxygen-free high-temperature environment, and then the granular domestic waste produces combustible gas composed of alkanes and other components, and then the combustible gas is discharged in time through the gas outlet pipe 13, effectively avoiding the phenomenon of excessive pressure in the shell 1;

[0048] During the rotation of the rotating part in the high-temperature rotary heater 55, the third gear 53 is driven to rotate, and the two second gears 22 are synchronously rotated under the transmission of the second synchronous belt 52, thereby making the two crankshafts 23 rotate synchronously, and with the assistance of the two auxiliary shafts 63 and the first through groove 62, the two structures formed by the fixed plate 61 and the shovel plate 6 are synchronously shoveled and thrown, so as to shovel and throw the granular domestic waste in the V-shaped baffle 7, so that the shovel and throw structure formed by the crankshaft 23, the fixed plate 61 and the shovel plate 6 makes the granular domestic waste perform an up and down throwing movement in the shell 1, effectively reducing the preparation time of combustible gas, and effectively ensuring the rapid preparation of combustible gas;

[0049] The design of the shoveling and throwing structure can improve the space utilization rate and effectively reduce the volume of the shell 1. The shoveling and throwing structure can make the granular domestic waste perform a flipping up and down tossing motion in the shell 1, thereby improving the uniform heating effect of the granular domestic waste. The third gear 53, the second synchronous belt 52 and the two second gears 22 are used to make the two crankshafts 23 move synchronously with the rotating part in the high-temperature rotary heater 55, so as to achieve the linkage between the heat generation motion of the high-temperature rotary heater 55 and the shoveling and throwing motion, thereby effectively reducing the equipment cost.

[0050] After the preparation of combustible gas is completed, the first control valve on the rectangular cylinder 34 is opened first, so that the waste residue remaining in the V-shaped baffle 7 enters the slag discharge shell 3 through the second through groove 71 and the rectangular cylinder 34, and the second motor 32 is started at the same time, thereby driving the spiral rod 33 to rotate, thereby causing the waste residue in the slag discharge shell 3 to move to the left, so that the waste residue moves to the position where the slag discharge pipe 31 and the slag discharge shell 3 are connected, and the waste residue is discharged through the slag discharge pipe 31, and the discharged waste residue can be used in the fields of fertilizers.

[0051] Embodiment 2: A shoveling and throwing structure formed by a crankshaft 23, a fixed plate 61 and a shovel plate 6 is used to make the granular domestic waste toss up and down in the shell 1 so that the granular domestic waste can be evenly heated. However, the granular domestic waste is easily contacted with the outer surface of the high-temperature rotary heater 55 due to the throwing motion. At this time, the outer surface of the high-temperature rotary heater 55 has a high temperature, which makes it more likely that the granular domestic waste in contact will coke or spontaneously combust. As a result, the granular domestic waste in contact is more likely to produce polluted gas, thereby affecting the quality of the prepared combustible gas.

[0052] In order to solve the above problems, Figure 1 , Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, the outer cylinder 5 located outside the high-temperature rotary heater 55 and passing through the shell 1 and extending into the U-shaped frame 41 is rotatably connected to the inside of the shell 1, and the high-temperature rotary heater 55 is isolated from the thrown granular domestic waste through the outer cylinder 5, and the output shaft of the first driving device passes through the U-shaped frame 41 and the outer cylinder 5 and is connected to the rotating part of the high-temperature rotary heater 55, and a plurality of straight plates 56 located in the shell 1 and arranged along the length direction of the outer cylinder 5 and located outside the opening groove 54 are equidistantly installed on the outer end surface of the outer cylinder 5, and the plurality of straight plates 56 are used in combination to break up the thrown granular domestic waste, and the lower outer end surface of the outer cylinder 5 is recessed inward to form an opening groove 54 that is arranged in communication with the inner cavity of the outer cylinder 5 and located in the shell 1, and the high-temperature rotary heater 55 can heat the falling granular domestic waste through the opening groove 54;

[0053] The first ring gear 51 located in the U-shaped frame 41 is installed on the outer end of the outer cylinder 5. The outer cylinder 5 is rotated through the first ring gear 51, and the first ring gear 51 is meshed on the top inner side of the first synchronous belt 21 that passes through the U-shaped frame 41 and is located on the left side of the shell 1. The two first gears 2 are rotated synchronously with the first ring gear 51 through the first synchronous belt 21, and the two first gears 2 located on the lower side of the U-shaped frame 41 are symmetrically meshed on the bottom inner side of the first synchronous belt 21. The left ends of the two crankshafts 23 pass through the shell 1 and are respectively connected to the two first gears 2. The two first gears 2 are used in conjunction with each other to move the first synchronous belt 21.

[0054] During the synchronous rotation of the two crankshafts 23, the two first gears 2 are synchronously rotated, and the first ring gear 51 is rotated under the transmission of the first synchronous belt 21, so that the outer cylinder 5 is rotated around the high-temperature rotary heater 55, so that the open groove 54 is rotated, and the outer cylinder 5 and the crankshaft 23 are synchronously moved, so that when the granular domestic waste in the V-shaped baffle 7 is thrown up by the shovel plate 6, the open groove 54 moves upward;

[0055] The outer cylinder 5 is used to isolate the thrown granular domestic waste from the high-temperature rotary heater 55, effectively reducing the probability of the thrown granular domestic waste adhering to the outer surface of the high-temperature rotary heater 55, effectively reducing the probability of the granular domestic waste being coked and spontaneously combusted due to adhesion and high temperature, effectively reducing the probability of pollutant gas generation, and effectively ensuring the quality of the prepared combustible gas;

[0056] When the shovel plate 6 and the thrown granular domestic waste fall down, the open groove 54 moves downward, so that the heat generated by the high-temperature rotary heater 55 is radiated to the granular domestic waste again, effectively ensuring the normal pyrolysis operation of the granular domestic waste. During the rotation of the outer cylinder 5, the multiple straight plates 56 are rotated, and the granular domestic waste floating due to the throwing is dispersed by the rotating multiple straight plates 56, effectively reducing the probability of heat radiation being blocked by the floating granular domestic waste, effectively ensuring the rapid preparation of combustible gas, and effectively ensuring the pyrolysis effect of the granular domestic waste.

[0057] Embodiment three: A shoveling and throwing structure formed by a crankshaft 23, a fixed plate 61 and a shovel plate 6 is used to make the granular domestic waste toss up and down in the shell 1, so that the granular domestic waste can be evenly heated, and the outer cylinder 5 and a plurality of straight plates 56 are used to isolate and break up the floating granular domestic waste. However, due to the throwing and breaking up, some granular domestic waste is likely to float on the upper side of the shell 1, causing the floating granular domestic waste to be easily mixed with the combustible gas and enter the exhaust pipe 13, causing the granular domestic waste to contaminate the discharged combustible gas, and causing the exhaust pipe 13 to be blocked by the granular domestic waste mixed in the combustible gas.

[0058] In order to solve the above problems, Figure 11-Figure 14 As shown, two mounting cylinders 104 located outside the outer cylinder 5 are rotatably connected to the left and right walls inside the shell 1, and the two mounting cylinders 104 are connected to the top of the inner side of the V-shaped filter plate 105 located inside the shell 1 and on the upper side of the fixing plate 61 and arranged in a lower wide and upper narrow manner. The two mounting cylinders 104 are used in conjunction with each other to make the V-shaped filter plate 105 rotatably connected to the shell 1;

[0059] The second ring gear 103 located between the left end of the V-shaped filter plate 105 and the left inner wall of the shell 1 is set on the outer end of the mounting tube 104 located on the left side. The mounting tube 104 located on the left side is rotated through the second ring gear 103, and the rotating gear 102 is meshed with the upper end of the second ring gear 103. The second ring gear 103 is rotated through the rotating gear 102. Then, the output shaft of the third motor 101, whose fixed part is set at the left end of the shell 1 and located on the upper side of the U-shaped frame 41, passes through the shell 1 and is connected to the rotating gear 102. The rotating gear 102 is driven to rotate through the third motor 101.

[0060] Before loading, the third motor 101 is started to drive the rotating gear 102 to rotate, thereby rotating the second ring gear 103, thereby rotating the installation cylinder 104 on the left side, and with the assistance of another installation cylinder 104, the V-shaped filter plate 105 is rotated 90 degrees, thereby making the opening of the V-shaped filter plate 105 face upward, and then the hopper 14 and the feeding pipe 12 are used to put the granular domestic waste into the housing 1, and the put granular domestic waste falls into the V-shaped filter plate 105;

[0061] When the loading is completed, the third motor 101, the rotating gear 102, the second ring gear 103 and the two mounting cylinders 104 are used to rotate the V-shaped filter plate 105 back to its original position, so that the granular domestic waste collected in the V-shaped filter plate 105 falls into the V-shaped baffle 7, realizing the normal loading operation, and effectively ensuring the normal pyrolysis operation of the granular domestic waste in the subsequent operation;

[0062] The air in the housing 1 is then extracted through the exhaust pipe 15, so that the granular domestic waste in the V-shaped baffle 7 is in an oxygen-free environment, and then the granular domestic waste in the V-shaped baffle 7 is in an oxygen-free high-temperature environment, so that the granular domestic waste produces combustible gas composed of alkanes and other components, and then the combustible gas floats upward and is discharged in time through the exhaust pipe 13;

[0063] At the same time, a shoveling and throwing structure formed by the crankshaft 23, the fixed plate 61 and the shovel plate 6 is used to make the granular domestic waste move up and down in the shell 1. Due to the throwing motion, some granular domestic waste can easily move upward along with the combustible gas by floating upward, and the V-shaped filter plate 105 is used to block the granular domestic waste moving upward, thereby effectively reducing the probability of the granular domestic waste being mixed with the combustible gas and being discharged. On the one hand, it effectively reduces the probability of the gas outlet pipe 13 being blocked, and on the other hand, it effectively guarantees the quality of the prepared combustible gas.

[0064] A method for preparing combustible gas from domestic waste, using any of the above-mentioned equipment for preparing combustible gas from domestic waste, comprising the following steps:

[0065] The first step is pretreatment, which involves crushing the collected domestic waste and shaping the crushed domestic waste into particles with a diameter of less than 10 mm, thereby obtaining granular domestic waste;

[0066] The second step is to load the material. First, close the first control valve, and then put the granular domestic garbage into the hopper 14, so that the granular domestic garbage in the hopper 14 enters the shell 1 through the loading pipe 12 and falls into the V-shaped baffle 7, and then close the second control valve, and then extract the air in the shell 1 through the exhaust pipe 15, so that the internal space of the shell 1 forms an oxygen-free environment;

[0067] The third step is pyrolysis. First, the circuit of the high-temperature rotary heater 55 is connected, and then the rotating part of the high-temperature rotary heater 55 is rotated by the first driving device, so that the high-temperature rotary heater 55 generates heat, and then a high temperature is formed in the shell 1, so that the granular domestic waste in the V-shaped baffle 7 is pyrolyzed under high-temperature conditions without oxygen, thereby obtaining combustible gas. At the same time, the rotation of the rotating part of the high-temperature rotary heater 55 will cause the third gear 53 to rotate, and under the transmission of the second synchronous belt 52 and the two second gears 22, the two crankshafts 23 rotate synchronously, and with the assistance of the two fixed plates 61 and the two auxiliary shafts 63, the two shovel plates 6 shovel and throw the granular domestic waste in the V-shaped baffle 7, thereby assisting the pyrolysis operation and allowing the generated combustible gas to be discharged through the outlet pipe 13.

[0068] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for preparing combustible gas from domestic waste, characterized in that: The invention comprises a shell (1), wherein the shell (1) is rotatably connected to a high-temperature rotary heater (55) and the high-temperature rotary heater (55) is arranged in a transverse manner, a U-shaped frame (41) is installed at the left end of the shell (1), and an auxiliary component is rotatably connected to the shell (1) and extends from the left side of the shell (1) and into the U-shaped frame (41), and the auxiliary component is located outside the high-temperature rotary heater (55), a first driving device is installed at the left end of the U-shaped frame (41), and the output shaft of the first driving device passes through the U-shaped frame (41) and the auxiliary component and is connected to the rotating part of the high-temperature rotary heater (55), a V-shaped baffle (7) is installed inside the shell (1), and the V-shaped baffle (7) is arranged to be wide at the top and narrow at the bottom, and the V-shaped baffle (7) is located at the bottom of the auxiliary component; The shell (1) is internally connected to two crankshafts (23) for symmetrical rotation, and the two crankshafts (23) are located between the V-shaped baffle (7) and the auxiliary component. The upper surfaces of the two inclined surfaces of the V-shaped baffle (7) are both in contact with the shovel plate (6), and the two shovel plates (6) are arranged in a V-shaped structure with a width at the top and a narrowness at the bottom. A fixing plate (61) is installed at the middle of the upper ends of the two shovel plates (6), and the two fixing plates (61) are movably installed on the outer ends of the curved parts on the two crankshafts (23). The front end surfaces of the two shovel plates (6) are both recessed backwards to form a first through groove (62), and the first through groove (62) penetrates the shovel plates (6). Two auxiliary shafts (63) are symmetrically arranged inside the shell (1), and the two auxiliary shafts (63) respectively penetrate the two first through grooves (62), and the auxiliary shafts (63) are slidably connected to the first through grooves (62); A first linkage member is installed at the left end of the shell (1), and the upper part of the first linkage member is connected to the auxiliary member. The left ends of the two crankshafts (23) are connected to the lower part of the first linkage member. A second linkage member is arranged at the right end of the shell (1). The rotating part of the high-temperature rotary heater (55) passes through the shell (1) and is connected to the upper part of the second linkage member. The right ends of the two crankshafts (23) are connected to the lower part of the second linkage member. A slag discharge member is arranged at the lower end of the shell (1). The upper end of the slag discharge member passes through the shell (1) and is connected to the V-shaped baffle (7). The auxiliary component comprises an outer cylinder (5), the outer cylinder (5) being rotatably connected inside the shell (1), and the outer cylinder (5) being located outside the high-temperature rotary heater (55), the outer cylinder (5) passing through the shell (1) and extending into the U-shaped frame (41), the output shaft of the first driving device passing through the U-shaped frame (41) and the outer cylinder (5) and being connected to the rotating part of the high-temperature rotary heater (55), the lower outer end surface of the outer cylinder (5) being recessed inward to form an open groove (54), and the open groove (54) being arranged in communication with the inner cavity of the outer cylinder (5), the open groove (54) being located inside the shell (1), a plurality of straight plates (56) being equidistantly installed on the outer end surface of the outer cylinder (5), and the plurality of straight plates (56) being located inside the shell (1), the straight plates (56) being arranged along the length direction of the outer cylinder (5), and the straight plates (56) being located outside the open groove (54); The first linkage member comprises a first ring gear (51), the first ring gear (51) being mounted on the outer end of the outer cylinder (5), and the first ring gear (51) being located inside the U-shaped frame (41), a first synchronous belt (21) being arranged on the left side of the housing (1), and the first synchronous belt (21) passing through the U-shaped frame (41), the first ring gear (51) being meshed with the top end inside the first synchronous belt (21), the bottom end inside the first synchronous belt (21) being symmetrically meshed with two first gears (2), and the two first gears (2) being located at the bottom side of the U-shaped frame (41), and the left ends of the two crankshafts (23) passing through the housing (1) and being respectively connected to the two first gears (2); The second linkage member comprises a third gear (53), the third gear (53) being connected to the rotating part of the high-temperature rotary heater (55), and the third gear (53) being located on the right side of the housing (1). A second synchronous belt (52) is arranged on the right side of the housing (1), the third gear (53) being meshed on the top inner end of the second synchronous belt (52), the bottom inner end of the second synchronous belt (52) being symmetrically meshed with two second gears (22), and the right ends of the two crankshafts (23) both pass through the housing (1) and are respectively connected to the two second gears (22).

2. The equipment for preparing combustible gas from domestic waste according to claim 1, characterized in that: The slag discharge part comprises a slag discharge shell (3), the slag discharge shell (3) is mounted at the lower end of the shell body (1), and the slag discharge shell (3) extends out of the left side of the shell body (1), a slag discharge pipe (31) is arranged at the left edge of the lower end of the slag discharge shell (3), and the slag discharge pipe (31) is arranged vertically, and lifting columns (11) are installed at four corners of the lower end of the shell body (1), and the lifting columns (11) are arranged vertically, and the lifting columns (11) are located outside the slag discharge shell (3); The slag discharge shell (3) is rotatably connected to a spiral rod (33) inside, and the spiral rod (33) is arranged along the length direction of the slag discharge shell (3). A second driving device is installed at the right end of the slag discharge shell (3), and the output shaft of the second driving device is connected to the spiral rod (33). The lower end surface of the V-shaped baffle (7) is recessed upward to form a second through groove (71), and the second through groove (71) penetrates the V-shaped baffle (7). A rectangular cylinder (34) with a first control valve is arranged in the middle of the lower end of the V-shaped baffle (7), and the rectangular cylinder (34) is communicated with the second through groove (71). The lower end of the rectangular cylinder (34) passes through the shell (1) and is communicated with the slag discharge shell (3).

3. The equipment for preparing combustible gas from domestic waste according to claim 2, characterized in that: The upper middle part of the shell (1) is connected to a feeding pipe (12) with a second control valve, the upper end of the feeding pipe (12) is connected to a hopper (14), the upper end of the shell (1) is connected to an exhaust pipe (15) with a one-way valve, and the other end of the exhaust pipe (15) is connected to an exhaust device, the exhaust pipe (15) is located at the front side of the hopper (14), the upper end of the shell (1) is connected to an exhaust pipe (13) with a one-way valve, and the exhaust pipe (13) is located at the rear side of the hopper (14).

4. A method for preparing combustible gas from domestic waste, using the equipment for preparing combustible gas from domestic waste as claimed in claim 3, characterized in that: The following steps are involved: The first step is pretreatment, which involves crushing the collected domestic waste and shaping the crushed domestic waste into particles with a diameter of less than 10 mm, thereby obtaining granular domestic waste; The second step is to load the material. First, the first control valve is closed, and then the granular domestic waste is put into the hopper (14), so that the granular domestic waste in the hopper (14) enters the shell (1) through the loading pipe (12) and falls into the V-shaped baffle (7), and then the second control valve is closed, and then the air in the shell (1) is extracted through the exhaust pipe (15), so that the internal space of the shell (1) forms an oxygen-free environment; The third step is pyrolysis. First, the circuit of the high-temperature rotary heater (55) is connected, and then the rotating part of the high-temperature rotary heater (55) is rotated by the first driving device, so that the high-temperature rotary heater (55) generates heat, and then a high temperature is formed in the shell (1), so that the granular domestic waste in the V-shaped baffle (7) is pyrolyzed under high-temperature conditions without oxygen, thereby obtaining combustible gas. At the same time, the rotation of the rotating part of the high-temperature rotary heater (55) causes the third gear (53) to rotate, and under the transmission of the second synchronous belt (52) and the two second gears (22), the two crankshafts (23) rotate synchronously, and with the assistance of the two fixed plates (61) and the two auxiliary shafts (63), the two shovel plates (6) shovel and throw the granular domestic waste in the V-shaped baffle (7), thereby assisting the pyrolysis operation and allowing the generated combustible gas to be discharged through the outlet pipe (13).

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