Multi-module sample mixer with self-cleaning function for solid waste sample preparation

Abstract

The invention discloses a multi-module sample mixer with a self-cleaning function for solid waste sample preparation, and the multi-module sample mixer comprises a sample mixing tank, and a stirring mechanism, an intelligent induction type adjusting assembly, a self-cleaning mechanism, a water recovery mechanism and a real-time weighing assembly which are all mounted on the sample mixing tank and are distributed up and down, and one side of the bottom of a support frame is rotatably connected with a rotating strip; u-shaped frames are rotationally connected to the two ends of the bottom of the rotating strip, screw rods are fixedly arranged at the two ends of the two U-shaped frames, first stirring rollers are in threaded connection with the outer walls of the two screw rods, and a second stirring roller is installed in the middle of the bottom of the rotating strip. According to the invention, the rotating strip rotates, the second rotating roller stirs in the central area of the sample mixing tank, the first stirring roller stirs at the edge of the inner side of the sample mixing tank, and the first stirring roller can perform autorotation stirring, so that the purpose of synchronous and different stirring modes is achieved, solid wastes are stirred more uniformly during mixing, the stirring mode does not need to be manually controlled by a worker, and the stirring efficiency is improved. The labor burden is reduced and the sample mixing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solid waste sample preparation and mixing, in particular to a multi-module sample mixer for solid waste sample preparation with a self-cleaning function. Background Art

[0002] Solid waste refers to solid, semi-solid, and gaseous items and materials in containers that have lost their original value or have been discarded or abandoned despite having retained their value, resulting from production, daily life, and other activities. Based on their source and nature, solid waste can be categorized as household waste, construction waste, and hazardous solid waste. Solid waste sampling refers to the process of processing and treating solid waste samples for subsequent chemical, physical, or biological analysis. This process requires the use of specialized mixers. With technological advancements, the types and functions of these mixers are constantly improving, making them more convenient to use.

[0003] However, the traditional solid waste sample preparation and mixing technology has the following problems: 1. Ordinary mixers have a single function and can only serve as a carrier when mixing samples. The specific mixing operation still requires manual stirring by staff to ensure uniform mixing. In addition, the equipment has low detachability, which makes subsequent maintenance very troublesome. Mixers with automatic stirring functions are less intelligent and cannot adjust the stirring intensity according to the characteristics of solid waste, such as particle size and humidity. Staff must pay attention to and adjust the control at all times, which results in a heavy labor burden and low mixing efficiency. 2. After the mixing is completed, the equipment is difficult to clean and requires repeated manual cleaning. In addition, the existing solid waste sample mixer does not have the function of recycling the cleaning water after the mixing is completed. The water source used for a single cleaning is large, which increases resource waste. 3. The existing sample mixer does not have a real-time detection function and cannot provide the staff with the uniformity and real-time progress of solid waste sample preparation in the first place. The staff needs to observe and control it by themselves, which reduces the convenience of equipment use. In this regard, this design proposes a multi-module mixer for solid waste sample preparation with a self-cleaning function. Summary of the Invention

[0004] The object of the present invention is to provide a multi-module sample mixer for solid waste sample preparation with a self-cleaning function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention proposes a multi-module sample mixer for solid waste sample preparation with a self-cleaning function, comprising a sample mixing tank and a stirring mechanism, an intelligent inductive adjustment component, a self-cleaning mechanism, a water recovery mechanism, and a real-time weighing component, all of which are installed on the sample mixing tank in upper and lower distributions; The stirring mechanism includes limiting slide grooves provided on both sides of the outer wall of the mixing tank, wherein the inner wall of one of the limiting slide grooves is slidably connected to a lifting frame, the inner wall of one end of the lifting frame is rotatably connected to a support frame, one side of the bottom of the support frame is rotatably connected to a rotating bar, both ends of the bottom of the rotating bar are rotatably connected to a U-shaped frame, both ends of the two U-shaped frames are fixed with screws, the outer walls of the two screws are threadedly connected to a first stirring roller, and a second stirring roller is installed in the middle of the bottom of the rotating bar; The intelligent sensing adjustment component includes a mounting sleeve installed on one side of the bottom of the support frame, and slots are provided on both sides of the outer wall of the mounting sleeve. The inner wall of the mounting sleeve is connected with a support rod, and a material sensor is installed at the bottom of the support rod. Buckles are fixed on both sides of the top of the support rod, and the outer walls of the two buckles are respectively connected with the inner walls of the two slots. A contact piece is connected with the inner wall of the mounting sleeve, and a first spring is fixed on the top of the contact piece, and one end of the first spring is fixedly connected to the support frame.

[0006] In one example, a groove is provided at the lower edge of one side of the outer wall of the support frame, a connecting groove is provided on one side of the outer wall of the support frame, and the inner wall of the connecting groove is connected to the inner wall of the groove, one side of the top of the lifting frame is inserted and connected with the limiting frame, and one end of the outer wall of the limiting frame is slidably connected to the inner wall of the groove, and the outer wall of the other end of the limiting frame is inserted and connected to the inner wall of the connecting groove.

[0007] In one example, the inner walls of the two limiting slide grooves are rotatably connected to a screw rod, and the outer wall of the screw rod is threadedly connected to the inner wall of the lifting frame. One side of the lifting frame is threadedly connected to a pin, and the outer wall of the pin is rotatably connected to the inner wall of one end of the support frame.

[0008] In one example, the self-cleaning mechanism includes a slider slidably connected to the inner wall of another limiting slide groove, a connecting rod is fixedly provided on one side of the slider, an arc-shaped mounting bracket is fixedly provided on the top of the connecting rod, a plurality of nozzles are equidistantly installed on the bottom of the arc-shaped mounting bracket, and the outer wall of the other screw rod is threadedly connected to the inner wall of the slider.

[0009] In one example, a first motor is installed at the lower edge of both sides of the mixing tank, and one end of the two screw rods is fixedly connected to the output ends of the two first motors respectively; a second motor is installed on one side of the top of the support frame, and the middle position of the top of the rotating bar is fixedly connected to the output end of the second motor; a third motor is installed on both sides of the bottom of the rotating bar, and one end of the two U-shaped frames is fixedly connected to the output ends of the two third motors respectively; a differential regulator is installed on one side of the top of the support frame, and the differential regulator is electrically connected to the material sensor and the second motor respectively.

[0010] In one example, the water recovery mechanism includes a drainage bucket installed on one side of the bottom of the mixing tank, the bottom of the drainage bucket is threadedly connected to a filter cartridge, a filter screen is installed at the bottom of the inner wall of the filter cartridge, and a connecting pipe is inserted and connected to the bottom of the filter cartridge.

[0011] In one example, the inner wall of the connecting pipe passes through the inner wall of the filter residue cylinder and is communicated with the inner wall of the drainage bucket, and a sealing valve is installed on one side of the outer wall of the filter residue cylinder.

[0012] In one example, the real-time weighing component includes a limiting tube installed on one side of the bottom of the inner wall of the mixing tank, and a weight detector is installed on the inner wall of the limiting tube of the inner wall of the mixing tank. The upper end of the inner wall of the limiting tube is slidably connected to a support plate, and a second spring is fixedly provided at the bottom of the support plate, and the bottom of the second spring is fixedly connected to the bottom of the inner wall of the mixing tank.

[0013] In one example, a control panel is installed on one side of the outer wall of the mixing tank, and the first motor, the second motor, the third motor and the weight detector are all electrically connected to the external power supply through the control panel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a stirring mechanism and an intelligent inductive adjustment component, during the mixing process, the first stirring roller is connected through a U-shaped frame, and the second rotating roller and the U-shaped frame are installed on the rotating bar. When the rotating bar rotates, the second rotating roller stirs in the central area of ​​the mixing tank, and the first stirring roller stirs at the edge of the inner side of the mixing tank. The first stirring roller can rotate and stir, showing the purpose of synchronous and different stirring modes, so that the solid waste is stirred more evenly when mixed, without the need for manual control of the stirring mode by the staff. The material sensor senses the humidity and particle size of the material and issues an instruction to the differential regulator, which controls the speed of the second motor through the differential regulator, and then adjusts the stirring speed and intensity according to the real-time mixing uniformity of the material. There is no need for manual adjustment by the staff, which reduces the labor burden and improves the mixing efficiency. 2. By setting a self-cleaning mechanism and a water recovery mechanism, after the sample mixing is completed, the first motor is started to drive the slider to slide down in the limit slide, and then the arc-shaped mounting frame is lowered through the connecting rod, so that the nozzle at the bottom is aligned with the upper edge of the inner wall of the mixing tank, and the external water source system is connected to make the nozzle flush the inner wall of the mixing tank, and all the nozzles spray water synchronously to achieve comprehensive and efficient flushing of the inner wall of the mixing tank. After flushing, the residue is carried into the drainage bucket, and is filtered through the filter screen in the filter barrel through the connecting pipe for drainage and subsequent use. The filter barrel can be unscrewed from the drainage bucket for collection and treatment, thereby improving the efficiency of equipment cleaning and the environmental friendliness of cyclic cleaning. 3. By setting up a real-time weighing component and installing it at the bottom of the inner wall of the mixing tank, after stirring for a period of time, it is stopped intermittently. The material supported by the upper side of the support plate squeezes the support plate and compresses the second spring, so that the weight detector transmits the real-time detected weight of the material of the specified space size to the control panel for analysis. By detecting and analyzing the weight of the material of the same space size in different time periods, the uniformity of the material mixing can be judged. There is no need for staff to rely on direct and naked eye observation, which improves the mixing efficiency and the convenience of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 This is a schematic diagram of the structure of the self-cleaning device of the present invention; Figure 3 This is a schematic diagram of the structure of the stirring mechanism of the present invention when it is rotated and opened; Figure 4 This is a structural schematic diagram of the side surface of the sample mixing tank of the present invention; Figure 5 It is a schematic structural diagram of the stirring mechanism of the present invention; Figure 6 This invention is attached to the specification Figure 5 A schematic diagram of the structure enlarged in the middle; Figure 7 This is a schematic diagram of the structure of the connection between the support rod and the material sensor of the present invention; Figure 8 It is a schematic structural diagram of the self-cleaning mechanism of the present invention; Figure 9 This is a schematic diagram of the structure inside the filter cartridge of the present invention; Figure 10 It is a schematic structural diagram of the overall real-time weighing component of the present invention.

[0016] In the figure: 1. Mixing tank; 2. Stirring mechanism; 201. Limiting slide; 202. Lifting frame; 203. Support frame; 204. Rotating bar; 205. U-shaped frame; 206. Screw; 207. First stirring roller; 208. Second stirring roller; 209. Groove; 210. Connecting groove; 211. Limiting frame; 212. Screw; 213. Latch; 3. Intelligent inductive adjustment component; 301. Mounting sleeve; 302. Slot; 303. Support rod; 304. Material sensor; 305. Buckle; 306. Contact piece; 307, first spring; 4, self-cleaning mechanism; 401, slider; 402, connecting rod; 403, arc-shaped mounting bracket; 404, nozzle; 5, first motor; 6, second motor; 7, third motor; 8, differential regulator; 9, water recovery mechanism; 901, drainage bucket; 902, filter cartridge; 903, filter screen; 904, connecting pipe; 905, sealing valve; 10, real-time weighing assembly; 1001, limit tube; 1002, weight detector; 1003, support plate; 1004, second spring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-10 The present invention provides a technical solution: a multi-module sample mixer for solid waste sample preparation with a self-cleaning function, comprising a sample mixing tank 1, a stirring mechanism 2, an intelligent inductive adjustment component 3, a self-cleaning mechanism 4, a water recovery mechanism 9, and a real-time weighing component 10, all of which are installed on the sample mixing tank 1 and distributed in an upper and lower manner; The stirring mechanism 2 includes limiting chutes 201 provided on both sides of the outer wall of the mixing tank 1, wherein the inner wall of one of the limiting chutes 201 is slidably connected to a lifting frame 202, the inner wall of one end of the lifting frame 202 is rotatably connected to a support frame 203, one side of the bottom of the support frame 203 is rotatably connected to a rotating bar 204, both ends of the bottom of the rotating bar 204 are rotatably connected to a U-shaped frame 205, both ends of the two U-shaped frames 205 are fixed with screws 206, the outer walls of the two screws 206 are threadedly connected to a first stirring roller 207, and a second stirring roller 208 is installed in the middle position of the bottom of the rotating bar 204; The intelligent inductive adjustment component 3 includes a mounting sleeve 301 mounted on one side of the bottom of the support frame 203. Slots 302 are provided on both sides of the outer wall of the mounting sleeve 301. A support rod 303 is inserted and connected to the inner wall of the mounting sleeve 301. A material sensor 304 is installed at the bottom of the support rod 303. Buckles 305 are fixed on both sides of the top of the support rod 303. The outer walls of the two buckles 305 are respectively inserted and connected to the inner walls of the two slots 302. A contact piece 306 is inserted and connected to the inner wall of the mounting sleeve 301. A first spring 307 is fixed to the top of the contact piece 306, and one end of the first spring 307 is fixedly connected to the support frame 203. During use, the solid waste to be sampled is introduced into the mixing tank 1, and then the lifting frame 202 and the support frame 203 are driven to rise and fall above the mixing tank 1 through the limiting slide 201, the screw rod 212, and the first motor 5, and then the stirring mechanism 2 is inserted into the mixing tank 1, and the second motor 6 and the third motor 7 are started, so that the rotating bar 204 drives the first stirring roller 207 to revolve around the inner wall of the mixing tank 1, and at the same time, the second stirring roller 208 in the middle carries a side shaft, and while the third motor 7 drives the U-shaped frame 205 to rotate with the first stirring roller 207, the second stirring roller 208 rotates and stirs in the middle position of the inner wall of the mixing tank 1, so that the stirring mechanism 2 presents different stirring modes during stirring, and the stirring range is larger, so that the waste sampling and mixing process can be stirred more evenly, and during the stirring process, the installation at the bottom of the support frame 203 The support rod 303 is inserted into the sleeve 301, and the support rod 303 is rotated so that the two buckles 305 on the upper side are fixed in the card slots 302 of the mounting sleeve 301, and the material sensor 304 at the bottom of the support rod 303 has a particle sensing function and a humidity sensing function. It judges the mixing uniformity and progress by sensing the uniformity of particle distribution and material humidity during mixing, and then contacts the support rod 303 through the contact piece 306 so that it is energized with the differential regulator 8, and then sends an instruction to the second motor 6 through the differential regulator 8, and then the speed is adaptively adjusted, thereby achieving the purpose of intelligent mixing and stirring speed adaptive adjustment, without the need for staff to observe, control and adjust at all times, and the first stirring roller 207 can be unscrewed from the screw 206 at the bottom of the U-shaped frame 205 for cleaning and replacement, reducing labor burden and improving mixing efficiency; Furthermore, a groove 209 is provided at the lower edge of one side of the outer wall of the support frame 203, and a connecting groove 210 is provided on one side of the outer wall of the support frame 203, and the inner wall of the connecting groove 210 is communicated with the inner wall of the groove 209, and one side of the top of the lifting frame 202 is connected with the limiting frame 211 through an insertion, and one end of the outer wall of the limiting frame 211 is slidably connected to the inner wall of the groove 209, and the outer wall of the other end of the limiting frame 211 is connected through an insertion with the inner wall of the connecting groove 210. After the maintenance of the stirring mechanism 2 is completed and the stirring roller is replaced, the support frame is rotated and the top side of the lifting frame 202 is pulled The limiting frame 211 makes the big end of its top get into the upper end of the inner wall of the groove 209 on one side of the support frame 203 when the support frame 203 rotates, and slides the limiting frame 211 downward so that the outer wall of its upper end slides down along the groove 209, and the outer wall of the lower end is inserted into the connecting groove 210, thereby pressing the support frame 203 to restrict it from continuing to rotate, thereby fixing the stirring mechanism 2, and then starting one of the first motors 5 to drive the screw rod 212 to rotate and drive the lifting frame 202 and the support frame 203 to descend, so that the stirring mechanism 2 can be inserted into the mixing tank 1 for stirring and mixing.

[0019] The inner walls of the two limiting slides 201 are rotatably connected to screw rods 212, and the outer walls of the screw rods 212 are threadedly connected to the inner wall of the lifting frame 202. A latch 213 is threadedly connected to one side of the lifting frame 202, and the outer wall of the latch 213 is rotatably connected to the inner wall of one end of the support frame 203. The two ends of the latch 213 are threadedly connected to the inner walls of both sides of the lifting frame 202. After unscrewing the latch 213, the support frame 203 can be removed for replacement or maintenance, making the stirring mechanism 2 highly adaptable and convenient for mixing and stirring samples in different cavities; Furthermore, the self-cleaning mechanism 4 includes a slider 401 slidably connected to the inner wall of another limiting slide 201, and a connecting rod 402 is fixedly provided on one side of the slider 401, and an arc-shaped mounting bracket 403 is fixedly provided on the top of the connecting rod 402, and a plurality of nozzles 404 are equidistantly installed on the bottom of the arc-shaped mounting bracket 403, and the outer wall of another screw rod 212 is threadedly connected to the inner wall of the slider 401. After the sample is mixed and the material is collected, the plurality of nozzles 404 on the arc-shaped mounting bracket 403 are uniformly connected to the external water pipe, thereby taking in water from the outside, and starting another first motor 5 to drive the other screw rod 212 to slide with the slider 401 in the limiting slide 201, thereby lowering the arc-shaped mounting bracket 403 and the nozzle 404 to the upper edge of the inner wall of the mixing tank 1, and turning on the nozzle 404 to spray water can make the high-pressure water column sprayed by the nozzle 404 directly flush the inner peripheral wall of the mixing tank 1, thereby achieving comprehensive and efficient flushing, and no manual cleaning is required by the staff; Furthermore, a first motor 5 is installed at the lower edge of both sides of the mixing tank 1, and one end of the two screw rods 212 is fixedly connected to the output ends of the two first motors 5, a second motor 6 is installed on one side of the top of the support frame 203, and the middle position of the top of the rotating bar 204 is fixedly connected to the output end of the second motor 6, a third motor 7 is installed on both sides of the bottom of the rotating bar 204, and one end of the two U-shaped frames 205 is fixedly connected to the output ends of the two third motors 7, a differential regulator 8 is installed on one side of the top of the support frame 203, and the differential regulator 8 is electrically connected to the material sensor 304 and the second motor 6, respectively. The differential regulator 8 is electrically connected to the material sensor 304 and the second motor 6, respectively, and can intelligently adjust the stirring intensity of the stirring mechanism 2 according to the uniformity of the material mixing; Furthermore, the water recovery mechanism 9 includes a drainage bucket 901 installed on one side of the bottom of the mixing tank 1. The bottom of the drainage bucket 901 is threadedly connected to a filter residue cylinder 902. A filter screen 903 is installed at the bottom of the inner wall of the filter residue cylinder 902. The bottom of the filter residue cylinder 902 is connected with a connecting pipe 904. After self-cleaning is completed, the sealing valve 905 is opened to guide the wastewater into the drainage bucket 901 and enter the filter residue cylinder 902 through the drainage bucket 901. The clean water after the filter residue cylinder 902 leaks into the connecting pipe 904 through the filter screen 903 and is collected and reused. The washed-down residue can be processed by unscrewing the filter residue cylinder 902 from the bottom of the drainage bucket 901 later.

[0020] The inner wall of the connecting pipe 904 passes through the inner wall of the filter residue cylinder 902 and is connected to the inner wall of the drainage bucket 901. A sealing valve 905 is installed on one side of the outer wall of the filter residue cylinder 902. When flushing, the drainage bucket 901 is sealed by the sealing valve 905. After cleaning is completed, the sealing valve 905 is opened to filter and collect the cleaning liquid; Furthermore, the real-time weighing component 10 includes a limiting tube 1001 installed on one side of the bottom of the inner wall of the mixing tank 1, and a weight detector 1002 is installed on the inner wall of the limiting tube 1001 on the inner wall of the mixing tank 1. The upper end of the inner wall of the limiting tube 1001 is slidably connected to a support plate 1003, and a second spring 1004 is fixedly provided at the bottom of the support plate 1003, and the bottom of the second spring 1004 is fixedly connected to the bottom of the inner wall of the mixing tank 1. During the mixing and stirring process of solid waste in the mixing tank 1, since the real-time weighing component 10 is set at the bottom of the inner wall of the mixing tank 1, the material located on the upper side of the support plate 1003 is supported on the support plate 1003. Above, stir for a period of time and then stop for a moment. The material above presses the support plate 1003 and then compresses the second spring 1004 to squeeze the weight detector 1002 inside the limiting tube 1001 and transmits the real-time weight data to the control panel for multiple data analysis to quickly analyze the uniformity of material mixing, which is convenient for the staff to accurately control the mixing progress of the mixer. The staff does not need to rely on intuition and visual observation to judge, which improves the convenience of equipment use. The outer wall of the support plate 1003 is always in contact with the inner wall of the limiting tube 1001, and moisture is not easy to contact the inner weight detector 1002, thereby avoiding damage to it when it encounters water.

[0021] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, please refer to the partial description of the method embodiment. The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A multi-module sample mixer for solid waste sample preparation with a self-cleaning function, comprising a sample mixing tank (1), a stirring mechanism (2) installed on the sample mixing tank (1) and arranged in an upper and lower manner, an intelligent inductive adjustment component (3), a self-cleaning mechanism (4), a water recovery mechanism (9), and a real-time weighing component (10); Its characteristics are: The stirring mechanism (2) comprises limiting chutes (201) provided on both sides of the outer wall of the mixing tank (1), wherein the inner wall of one of the limiting chutes (201) is slidably connected to a lifting frame (202), the inner wall of one end of the lifting frame (202) is rotatably connected to a support frame (203), one side of the bottom of the support frame (203) is rotatably connected to a rotating bar (204), both ends of the bottom of the rotating bar (204) are rotatably connected to a U-shaped frame (205), both ends of the two U-shaped frames (205) are fixed with screws (206), the outer walls of the two screws (206) are threadedly connected to a first stirring roller (207), and a second stirring roller (208) is installed in the middle of the bottom of the rotating bar (204); The intelligent sensing adjustment component (3) comprises a mounting sleeve (301) mounted on one side of the bottom of the support frame (203), a card slot (302) is provided on both sides of the outer wall of the mounting sleeve (301), a support rod (303) is inserted and connected to the inner wall of the mounting sleeve (301), a material sensor (304) is installed at the bottom of the support rod (303), buckles (305) are fixedly provided on both sides of the top of the support rod (303), and the outer walls of the two buckles (305) are respectively inserted and connected to the inner walls of the two card slots (302), a contact piece (306) is inserted and connected to the inner wall of the mounting sleeve (301), a first spring (307) is fixedly provided on the top of the contact piece (306), and one end of the first spring (307) is fixedly connected to the support frame (203).

2. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 1, characterized in that: A groove (209) is provided at the lower edge of one side of the outer wall of the support frame (203), a connecting groove (210) is provided on one side of the outer wall of the support frame (203), and the inner wall of the connecting groove (210) is communicated with the inner wall of the groove (209), one side of the top of the lifting frame (202) is connected to the limiting frame (211) through insertion, and one end of the outer wall of the limiting frame (211) is slidably connected to the inner wall of the groove (209), and the outer wall of the other end of the limiting frame (211) is connected to the inner wall of the connecting groove (210) through insertion.

3. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 1, characterized in that: The inner walls of the two limiting slide grooves (201) are both rotatably connected to a screw rod (212), and the outer wall of the screw rod (212) is threadedly connected to the inner wall of the lifting frame (202), and one side of the lifting frame (202) is threadedly connected to a latch (213), and the outer wall of the latch (213) is rotatably connected to the inner wall of one end of the support frame (203).

4. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 3, characterized in that: The self-cleaning mechanism (4) comprises a slider (401) slidably connected to the inner wall of another limiting slide groove (201), a connecting rod (402) is fixedly provided on one side of the slider (401), an arc-shaped mounting frame (403) is fixedly provided on the top of the connecting rod (402), a plurality of nozzles (404) are equidistantly mounted on the bottom of the arc-shaped mounting frame (403), and the outer wall of the other screw rod (212) is threadedly connected to the inner wall of the slider (401).

5. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 1, characterized in that: A first motor (5) is installed at the lower edge of both sides of the mixing tank (1), and one end of the two screw rods (212) is fixedly connected to the output ends of the two first motors (5), a second motor (6) is installed on one side of the top of the support frame (203), and the middle position of the top of the rotating bar (204) is fixedly connected to the output end of the second motor (6), a third motor (7) is installed on both sides of the bottom of the rotating bar (204), and one end of the two U-shaped frames (205) is fixedly connected to the output ends of the two third motors (7), a differential regulator (8) is installed on one side of the top of the support frame (203), and the differential regulator (8) is electrically connected to the material sensor (304) and the second motor (6), respectively.

6. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 1, characterized in that: The water recovery mechanism (9) comprises a drainage bucket (901) installed on one side of the bottom of the sample mixing tank (1), the bottom of the drainage bucket (901) is threadedly connected to a filter cartridge (902), a filter screen (903) is installed at the bottom of the inner wall of the filter cartridge (902), and a connecting pipe (904) is inserted and connected to the bottom of the filter cartridge (902).

7. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 6, characterized in that: The inner wall of the connecting pipe (904) passes through the inner wall of the filter residue cylinder (902) and is in communication with the inner wall of the drainage bucket (901). A sealing valve (905) is installed on one side of the outer wall of the filter residue cylinder (902).

8. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 1, characterized in that: The real-time weighing assembly (10) comprises a limiting tube (1001) installed on one side of the bottom of the inner wall of the mixing tank (1); a weight detector (1002) is installed on the inner wall of the limiting tube (1001) of the inner wall of the mixing tank (1); a support plate (1003) is slidably connected to the upper end of the inner wall of the limiting tube (1001); a second spring (1004) is fixedly provided at the bottom of the support plate (1003), and the bottom of the second spring (1004) is fixedly connected to the bottom of the inner wall of the mixing tank (1).

9. The multi-module sample mixer for solid waste sample preparation with a self-cleaning function according to claim 8, characterized in that: A control panel is installed on one side of the outer wall of the sample mixing tank (1), and the first motor (5), the second motor (6), the third motor (7) and the weight detector (1002) are all electrically connected to an external power supply through the control panel.

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