Fireproof system for waste refrigerator treatment line

Abstract

The invention discloses a waste refrigerator treatment line fireproof system, and relates to the technical field of waste household appliance treatment, the waste refrigerator treatment line fireproof system comprises a bottom plate, the leftmost side of the upper surface of the bottom plate is fixedly connected with a sliding table, the upper surface of the sliding table is obliquely provided with a mounting groove, the interior of the mounting groove is rotatably connected with a plurality of rollers, and the front side of the sliding table is fixedly connected with a mounting plate; a controller is fixedly connected to the front side of the mounting plate, a feeding assembly is arranged in the middle of the upper surface of the bottom plate and comprises a first supporting frame, the bottom of the first supporting frame is fixedly connected to the middle of the upper surface of the bottom plate, a first fixing strip is fixedly connected to the left side in the first supporting frame, and a second fixing strip is fixedly connected to the right side in the first supporting frame; a purifying assembly is arranged in the first supporting frame and above the first fixing strip, and a crushing and sorting assembly is arranged on the rightmost side of the upper surface of the bottom plate. The device has the advantages that cyclopentane can be effectively isolated from a crushing environment through negative pressure suction and absorption of an organic solvent, and accumulation of combustible gas and potential safety hazards are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of old household appliance processing, in particular to a fire prevention system for a waste refrigerator processing line. Background Art

[0002] The recyclable resources in used refrigerators mainly include plastics, iron materials and non-ferrous metals including copper and aluminum. Among them, the traditional recycling method of used refrigerators is: first disassemble the used refrigerators manually; then select the materials that can be directly used from the pre-disassembled materials for recycling, and send the materials that cannot be directly used to the crusher for crushing; sort the crushed materials, and finally obtain plastics, iron materials and non-ferrous metals.

[0003] During the crushing process of waste refrigerators in the crusher bin, the refrigerator foaming agent will produce flammable gas (cyclopentane). When the concentration of the flammable gas reaches a certain height and the temperature reaches the combustion point, a large amount of foam will be generated during the processing of the waste refrigerator. At this time, the crushed materials inside the crusher bin will catch fire. In view of the above problems, a fire protection system for waste refrigerator processing line is proposed to solve them. Summary of the invention

[0004] In order to solve the above technical problems, a fire prevention system for a waste refrigerator processing line is provided, which solves the problem that during the current crushing process of waste refrigerators in the crusher bin, the refrigerator foaming agent will produce flammable gas (cyclopentane). When the concentration of the flammable gas reaches a certain height and the temperature reaches the combustion point, a large amount of foam will be generated during the processing of the waste refrigerator, and the crushed material inside the crusher bin will catch fire.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a fire prevention system for a waste refrigerator processing line, comprising a base plate, a slide is fixedly connected to the leftmost side of the upper surface of the base plate, a mounting groove is obliquely opened on the upper surface of the slide, a plurality of rollers are rotatably connected inside the mounting groove, a mounting plate is fixedly connected to the front side of the slide, a controller is fixedly connected to the front side of the mounting plate, a feeding assembly is arranged in the middle of the upper surface of the base plate, the feeding assembly comprises a first support frame, the bottom of the first support frame is fixedly connected to the middle of the upper surface of the base plate, a first fixing bar is fixedly connected to the left side of the first support frame, a second fixing bar is fixedly connected to the right side of the first support frame, a purification assembly is arranged inside the first support frame and above the first fixing bar, and a crushing and sorting assembly is arranged on the rightmost side of the upper surface of the base plate.

[0006] Preferably, a feeding and conveying platform is arranged above the first support frame, and the left end of the feeding and conveying platform is rotatably connected to the left side of the first support frame via a rotating shaft, a first baffle is fixedly connected to the front and rear sides of the top of the feeding and conveying platform, the front and rear ends of the right side of the first support frame are fixedly connected to the first adjusting bar, the front and rear ends of the right side of the feeding and conveying platform are fixedly connected to the first fixing parts, the first fixing part is fixedly connected to the first adjusting bar via bolts, the front and rear sides of the middle part of the first support frame are fixedly connected to the second adjusting bar, the front and rear sides of the middle part of the feeding and conveying platform are fixedly connected to the second fixing parts, and the second fixing part is fixedly connected to the second adjusting bar via bolts.

[0007] Preferably, the purification component includes an absorption tank and a negative pressure box, the absorption tank is fixedly connected above the first fixing bar, the negative pressure box is fixedly connected above the second fixing bar, an axial flow fan is fixedly installed inside the negative pressure box, an intake pipe is fixedly connected to the right side of the negative pressure box, and an air duct is fixedly connected to the left side of the negative pressure box.

[0008] Preferably, a partition is fixedly connected to the right side of the inside of the absorption tank, the end of the air duct goes around the bottom of the partition and extends to the left side of the partition, two fixed seats are fixedly connected on the left and right sides above the absorption tank, a first rotating cylinder is rotatably connected between the two fixed seats, a transmission belt is transmission-connected between the two groups of the first rotating cylinders, and a plurality of scrapers are fixedly connected to the outer surface of the transmission belt.

[0009] Preferably, a second pulley is fixedly connected to the front side of the first rotating cylinder on at least one side, a motor frame is fixedly connected to the front side of the absorption tank and the position of the second pulley, a first motor is fixedly connected to the front side of the motor frame, an output end of the first motor passes through the front side of the motor frame and is fixedly connected to the first pulley, and the first pulley is connected to the second pulley through a synchronous belt.

[0010] Preferably, the crushing and sorting assembly includes a second support frame and a third support frame, the third support frame is fixedly connected to the right side of the upper surface of the base plate, the second support frame is fixedly connected to the top of the base plate and is located on the left side of the third support frame, a crushing bin is fixedly connected to the top of the second support frame, and crushing rollers are rotatably connected to the left and right ends of the crushing bin, the front sides of the two crushing rollers penetrate the front side wall of the crushing bin and are fixedly connected to transmission gears, the two transmission gears are meshed with each other, the front end of the right crushing roller is fixedly connected to the third pulley, and the left side of the crushing bin is fixedly connected to the end of the suction pipe through a connecting piece.

[0011] Preferably, the second rotating cylinders are rotatably connected to the left and right sides above the third support frame, a magnetic separation conveyor belt is transmission-connected between the two second rotating cylinders, a sixth pulley is fixedly connected to the front end of the right side of the second rotating cylinder, a second motor is fixedly connected to the right side inside the third support frame, a fifth pulley is fixedly connected to the output end of the second motor, the fifth pulley is transmission-connected to the sixth pulley via a synchronous belt, a third motor is fixedly installed on the left side inside the third support frame, a transmission rod is fixedly connected to the output end of the third motor, a fourth pulley is fixedly connected to the third pulley via a synchronous belt.

[0012] Preferably, a second baffle is fixedly connected to the right side above the crushing bin, a flame sensor is fixedly connected to the left side above the second baffle, a third guide plate is fixedly connected to the lower left side of the third support frame, a first guide plate is fixedly connected to the right side of the third support frame, a second guide plate is fixedly connected to the right side of the bottom of the third support frame and below the magnetic separation conveyor belt, a fixing frame is fixedly connected to the right side above the third support frame, and a guide hopper is fixedly connected to the interior of the fixing frame and directly below the crushing bin.

[0013] Preferably, the crushing and sorting component also includes a water pool, which is fixedly connected to the upper surface of the bottom plate, a filter plate is fixedly connected to the inside of the water pool, a water pump is fixedly installed inside the water pool and on the left side of the filter plate, the output end of the water pump is fixedly connected to a water pump, the end of the water pump is clamped with the rear plate of the crushing bin, and the end of the water pump is threadedly connected to an atomizing nozzle.

[0014] Compared with the prior art, the advantages of the present invention are: 1. The present invention sets an axial flow fan to generate negative pressure inside the negative pressure box, and sucks the foam and cyclopentane generated during crushing into the absorption tank through the suction pipe and the air guide pipe. The organic solvent stored in the absorption tank absorbs the cyclopentane, and the foam floats above the organic solvent under the action of buoyancy, and then the scraper is driven by the transmission belt to rotate to scrape the foam. Through negative pressure attraction and absorption of the organic solvent, cyclopentane can be effectively isolated from the crushing environment, thereby avoiding the accumulation of flammable gas and potential safety hazards, and the organic solvent effectively absorbs harmful substances to avoid their release into the air, reducing pollution to the environment and odor transmission, and improving the environmental protection of the production process. Through the action of buoyancy, the foam is separated from the organic solvent, and the foam floats above the organic solvent, avoiding pollution and cross-influence of the foam. The scraper is driven by the transmission belt to effectively clean and separate the foam, thereby avoiding interference of the foam with subsequent processing links, and also reducing the accumulation of foam in waste treatment, which is beneficial to the subsequent cleaning and management of waste.

[0015] 2. The present invention is provided with a flame sensor to detect that when a flame is generated, the water pump draws the water in the pool into the atomizing nozzle through the pumping pipe, and then the water flow is sprayed out in the form of mist to perform the fire extinguishing operation. At the same time, the output end of the second motor is reversed to make the magnetic separation conveyor belt rotate in the opposite direction to send the burning combustibles along the third guide plate into the pool for fire extinguishing. The flame sensor can detect the fire source in time. Once the flame is generated, the system will immediately start the fire extinguishing equipment. This rapid response mechanism can quickly extinguish the flame at the early stage of the fire, prevent the spread of the fire, and reduce the fire loss. The water in the pool is drawn into the atomizing nozzle and sprayed out in the form of mist, which can increase the contact area between water and flame, quickly absorb heat and reduce the temperature of the fire source. Compared with conventional water flow, the atomized water droplets have a larger surface area, can cover the flame more efficiently, and quickly extinguish the fire source. The design of the reverse magnetic separation conveyor belt can move the burning combustibles into the pool area in time for further fire extinguishing in the pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention from another viewing angle; Figure 3 It is a schematic diagram of the structure of the feeding assembly in the present invention; Figure 4 It is a schematic diagram of the purification component structure in the present invention; Figure 5 for Figure 4 A partial enlarged view of the middle A; Figure 6 It is a structural schematic diagram of the absorption tank in the present invention; Figure 7 for Figure 6 A partial enlarged view of point B in the middle; Figure 8 It is a schematic diagram of the structure of the crushing and sorting component in the present invention; Fig. 9 It is a structural schematic diagram of the third support frame in the present invention.

[0017] The numbers in the figure are: 1. Bottom plate; 2. Slide; 3. Mounting slot; 4. Roller; 5. Mounting plate; 6. Controller; 7. Feeding assembly; 701. First support frame; 702. First fixing bar; 703. Second fixing bar; 704. Feeding conveying platform; 705. First baffle; 706. First adjustment bar; 707. First fixing member; 708. Second adjustment bar; 709. Second fixing member; 8. Purification component; 801. Absorption tank; 802. Partition plate; 803. Fixed seat; 804. First rotating cylinder; 805. Transmission belt; 806. Scraper; 807. Motor frame; 808. First motor; 809. First pulley; 810. Second pulley; 811. Negative pressure box; 812. Axial flow fan; 813. Air guide pipe; 814. Air intake pipe; 9. Crushing and sorting assembly; 901. Second support frame; 902. Crushing bin; 903. Crushing roller; 904. Transmission gear; 905. Third pulley; 906. Second baffle; 907. Flame sensor; 908. Water tank; 909. Filter plate; 910. Water pump; 911. Suction pipe; 912. Atomizing nozzle; 913. Third support frame; 914. Fixed frame; 915. Guide hopper; 916. Second rotating cylinder; 917. Magnetic separation conveyor belt; 918. First guide plate; 919. Second guide plate; 920. Second motor; 921. Third motor; 922. Transmission rod; 923. Fourth pulley; 924. Fifth pulley; 925. Sixth pulley; 926. Third guide plate. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] Reference Figure 1-9 As shown, a fire prevention system for a waste refrigerator processing line comprises a bottom plate 1, a slide 2 is fixedly connected to the leftmost side of the upper surface of the bottom plate 1, a mounting groove 3 is obliquely opened on the upper surface of the slide 2, a plurality of rollers 4 are rotatably connected inside the mounting groove 3, a mounting plate 5 is fixedly connected to the front side of the slide 2, a controller 6 is fixedly connected to the front side of the mounting plate 5, a feeding assembly 7 is arranged in the middle of the upper surface of the bottom plate 1, the feeding assembly 7 comprises a first support frame 701, the bottom of the first support frame 701 is fixedly connected to the middle of the upper surface of the bottom plate 1, a first fixing bar 702 is fixedly connected to the left side of the first support frame 701, a second fixing bar 703 is fixedly connected to the right side of the first support frame 701, a purification assembly 8 is arranged inside the first support frame 701 and above the first fixing bar 702, a crushing and sorting assembly 9 is arranged on the rightmost side of the upper surface of the bottom plate 1, and the design of the roller 4 on the slide 2 can reduce the friction resistance of the waste refrigerator during transportation, so that it can enter the feeding assembly 7 more smoothly, thereby improving the overall processing efficiency.

[0020] Specifically, a feeding and conveying platform 704 is arranged above the first support frame 701, and the left end of the feeding and conveying platform 704 is rotatably connected to the left side of the first support frame 701 through a rotating shaft, and the first baffle 705 is fixedly connected to the front and rear sides of the top of the feeding and conveying platform 704, and the front and rear ends of the right side of the first support frame 701 are fixedly connected to the first adjustment bar 706, and the front and rear sides of the right end of the feeding and conveying platform 704 are fixedly connected to the first fixing member 707, and the first fixing member 707 is fixedly connected to the first adjustment bar 706 through bolts, and the front and rear sides of the middle part of the first support frame 701 are fixedly connected to the second adjustment bar 708, and the front and rear sides of the middle part of the feeding and conveying platform 704 are fixedly connected to the second fixing member 709, and the second fixing member 709 is fixedly connected to the second adjustment bar 708 through bolts. The angle of the feeding and conveying platform 704 can be adjusted by the first fixing member 707 and the second fixing member 709. This design enables the feeding assembly 7 to stably and accurately feed the used refrigerators into the crushing bin 902.

[0021] Specifically, the purification component 8 includes an absorption tank 801 and a negative pressure box 811. The absorption tank 801 is fixedly connected above the first fixed bar 702, and the negative pressure box 811 is fixedly connected above the second fixed bar 703. An axial flow fan 812 is fixedly installed inside the negative pressure box 811. An intake pipe 814 is fixedly connected to the right side of the negative pressure box 811, and an air guide pipe 813 is fixedly connected to the left side of the negative pressure box 811.

[0022] Specifically, a partition 802 is fixedly connected to the right side of the absorption tank 801, and the end of the air guide pipe 813 goes around the bottom of the partition 802 and extends to the left side of the partition 802. Two fixed seats 803 are fixedly connected to the left and right sides above the absorption tank 801. A first rotating cylinder 804 is rotatably connected between the two fixed seats 803. A transmission belt 805 is transmission-connected between the two groups of first rotating cylinders 804. A plurality of scrapers 806 are fixedly connected to the outer surface of the transmission belt 805. The purification component 8 effectively absorbs harmful substances such as foam and cyclopentane generated in the crushing process through the negative pressure generated by the negative pressure box 811 and the axial flow fan 812, and the design of the scraper 806 can clean up the floating foam in time to prevent it from clogging the system or polluting the environment.

[0023] Specifically, a second pulley 810 is fixedly connected to the front side of at least one side of the first rotating cylinder 804, a motor frame 807 is fixedly connected to the front side of the absorption tank 801 and the position of the second pulley 810, a first motor 808 is fixedly connected to the front side of the motor frame 807, an output end of the first motor 808 passes through the front side of the motor frame 807 and is fixedly connected to the first pulley 809, and the first pulley 809 is connected to the second pulley 810 through a synchronous belt.

[0024] Specifically, the crushing and sorting component 9 includes a second support frame 901 and a third support frame 913. The third support frame 913 is fixedly connected to the right side of the upper surface of the base plate 1. The second support frame 901 is fixedly connected above the base plate 1 and is located on the left side of the third support frame 913. A crushing bin 902 is fixedly connected above the second support frame 901. Crushing rollers 903 are rotatably connected to the left and right ends of the crushing bin 902. The front sides of the two crushing rollers 903 penetrate the front side wall of the crushing bin 902 and are fixedly connected to a transmission gear 904. The two transmission gears 904 are meshed with each other. The front end of the right crushing roller 903 is fixedly connected to the third pulley 905. The left side of the crushing bin 902 is fixedly connected to the end of the suction pipe 814 through a connecting piece.

[0025] Specifically, the third support frame 913 is rotatably connected to the left and right sides of both sides above the third support frame 913, and the two second rotating cylinders 916 are connected to the magnetic separation conveyor belt 917 in a transmission manner. The front end of the right second rotating cylinder 916 is fixedly connected to the sixth pulley 925, and the third support frame 913 is fixedly connected to the right side of the second motor 920, and the output end of the second motor 920 is fixedly connected to the fifth pulley 924, and the fifth pulley 924 is connected to the sixth pulley 925 through a synchronous belt. The third support frame 913 is fixedly installed on the left side of the third support frame 913, and the output end of the third motor 921 is fixedly connected to the transmission rod 922, and the output end of the transmission rod 922 is fixedly connected to the fourth pulley 923, and the fourth pulley 923 is connected to the third pulley 905 through a synchronous belt. The design of the crushing roller 903 can efficiently crush the waste refrigerator into small pieces, which is convenient for subsequent sorting and processing. At the same time, the magnetic separation conveyor belt 917 can automatically separate metal and non-metal substances, thereby improving the efficiency and purity of resource recovery.

[0026] Specifically, a second baffle 906 is fixedly connected to the right side above the crushing bin 902, a flame sensor 907 is fixedly connected to the left side above the second baffle 906, a third guide plate 926 is fixedly connected to the lower left side of the third support frame 913, a first guide plate 918 is fixedly connected to the right side of the third support frame 913, a second guide plate 919 is fixedly connected to the right side of the bottom of the third support frame 913 and below the magnetic separation conveyor belt 917, a fixed frame 914 is fixedly connected to the right side above the third support frame 913, a guide hopper 915 is fixedly connected to the interior of the fixed frame 914 and directly below the crushing bin 902, and the flame sensor 907 is set to monitor the fire risk in the crushing and sorting process in real time. Once a flame is detected, the water pump 910 will start immediately to spray the water in the pool 908 through the atomizing nozzle 912 to extinguish the fire. This rapid response fire extinguishing system can minimize the losses caused by fire.

[0027] Specifically, the crushing and sorting component 9 also includes a water pool 908, which is fixedly connected to the upper surface of the bottom plate 1, and a filter plate 909 is fixedly connected inside the water pool 908. A water pump 910 is fixedly installed inside the water pool 908 and on the left side of the filter plate 909. The output end of the water pump 910 is fixedly connected to a water pumping pipe 911, and the end of the water pumping pipe 911 is clamped with the rear side plate of the crushing bin 902, and the end of the water pumping pipe 911 is threadedly connected to an atomizing nozzle 912.

[0028] Working principle: First, loosen the first fixing member 707 and the second fixing member 709 to make the feeding conveyor 704 rotate around the rotating shaft, so as to adjust the angle so that the feeding conveyor 704 is aligned with the crushing bin 902. Then, the waste refrigerator is fed to the feeding conveyor 704 along the roller 4 through the external manipulator. The feeding conveyor 704 works to feed the waste refrigerator into the crushing bin 902. The output end of the third motor 921 drives the fourth pulley 923 to rotate through the transmission rod 922, and the third motor 921 drives the fourth pulley 923 to rotate through the synchronous belt. The three pulleys 905 rotate, and driven by the two transmission gears 904, the two crushing rollers 903 rotate to crush the waste refrigerator. During crushing, the axial flow fan 812 works to generate negative pressure inside the negative pressure box 811, and the foam and cyclopentane generated during crushing are sucked into the absorption tank 801 through the suction pipe 814 and the air guide pipe 813. The organic solvent stored in the absorption tank 801 absorbs the cyclopentane, and the foam floats above the organic solvent under the action of buoyancy. At this time, the first motor 808 The first pulley 809 is driven to rotate, and the first rotating drum 804 is driven to rotate through the synchronous belt and the second pulley 810, so that the transmission belt 805 is rotated, and the floating foam is scraped off by the scraper 806, and the waste generated after crushing falls on the magnetic separation conveyor belt 917 through the guide hopper 915, and the magnetism on the magnetic separation conveyor belt 917 adsorbs metals such as iron. With the action of the second motor 920, the fourth pulley 923, the sixth pulley 925 and the second rotating drum 916, the magnetic separation conveyor belt 917 drives the metal to move. With the movement of the magnetic separation conveyor belt 917, the non-metal that is not adsorbed on the magnetic separation conveyor belt 917 will leak out through the first guide plate 918, and the adsorbed metal will leak out from the second guide plate 919 under the scraping of the second guide plate 919. Through negative pressure attraction and absorption of organic solvent, cyclopentane can be effectively isolated from the crushing environment, and the foam and the organic solvent are separated under the action of buoyancy. The foam floats above the organic solvent, avoiding the contamination and cross-influence of the foam; When the flame sensor 907 detects that a flame has been generated, the water pump 910 draws water from the water pool 908 into the atomizing nozzle 912 through the pumping pipe 911, and then the water is sprayed out in a mist form to perform a fire extinguishing operation. At the same time, the output end of the second motor 920 is reversed to cause the magnetic separation conveyor belt 917 to rotate in the opposite direction to send the burning combustibles along the third guide plate 926 into the water pool 908 for fire extinguishing. After a delay of a period of time and the fire is extinguished, each component will resume operation, and the output end of the second motor 920 will be reversed to cause the magnetic separation conveyor belt 917 to rotate in the opposite direction to send the burning combustibles along the third guide plate 926 into the water pool 908 for fire extinguishing. The flame sensor 907 can detect the fire source in time, and once a flame is generated, the system will immediately start the fire extinguishing equipment.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A fire protection system for a waste refrigerator processing line, characterized by: The invention comprises a bottom plate (1), a slide (2) being fixedly connected to the leftmost side of the upper surface of the bottom plate (1), a mounting groove (3) being obliquely provided on the upper surface of the slide (2), a plurality of rollers (4) being rotatably connected inside the mounting groove (3), a mounting plate (5) being fixedly connected to the front side of the slide (2), a controller (6) being fixedly connected to the front side of the mounting plate (5), a feeding assembly (7) being arranged in the middle of the upper surface of the bottom plate (1), the feeding assembly (7) comprising a first support frame (701), the bottom of the first support frame (701) being fixedly connected to the middle of the upper surface of the bottom plate (1), a first fixing bar (702) being fixedly connected to the left side of the first support frame (701), a second fixing bar (703) being fixedly connected to the right side of the first support frame (701), a purification assembly (8) being arranged inside the first support frame (701) and above the first fixing bar (702), and a crushing and sorting assembly (9) being arranged on the rightmost side of the upper surface of the bottom plate (1).

2. A fire protection system for a waste refrigerator processing line according to claim 1, characterized in that: A feeding conveying platform (704) is arranged above the first support frame (701), and the left end of the feeding conveying platform (704) is rotatably connected to the left side of the first support frame (701) via a rotating shaft; first baffles (705) are fixedly connected to the front and rear sides of the top of the feeding conveying platform (704); the front and rear ends of the right side of the first support frame (701) are fixedly connected to first adjustment bars (706); the front and rear sides of the right end of the feeding conveying platform (704) are fixedly connected to first fixing members (707); the first fixing members (707) are fixedly connected to the first adjustment bar (706) via bolts; the front and rear sides of the middle part of the first support frame (701) are fixedly connected to second adjustment bars (708); the front and rear sides of the middle part of the feeding conveying platform (704) are fixedly connected to second fixing members (709); the second fixing members (709) are fixedly connected to the second adjustment bar (708) via bolts.

3. The fire protection system for a waste refrigerator processing line according to claim 1 is characterized in that: The purification component (8) comprises an absorption tank (801) and a negative pressure box (811), wherein the absorption tank (801) is fixedly connected to the top of the first fixing bar (702), and the negative pressure box (811) is fixedly connected to the top of the second fixing bar (703). An axial flow fan (812) is fixedly installed inside the negative pressure box (811), an air intake pipe (814) is fixedly connected to the right side of the negative pressure box (811), and an air guide pipe (813) is fixedly connected to the left side of the negative pressure box (811).

4. A fire protection system for a waste refrigerator processing line according to claim 3, characterized in that: A partition (802) is fixedly connected to the right side of the absorption tank (801), the end of the air guide pipe (813) goes around the bottom of the partition (802) and extends to the left side of the partition (802), two fixed seats (803) are fixedly connected to the left and right sides above the absorption tank (801), a first rotating cylinder (804) is rotatably connected between the two fixed seats (803), a transmission belt (805) is transmission-connected between the two groups of the first rotating cylinders (804), and a plurality of scrapers (806) are fixedly connected to the outer surface of the transmission belt (805).

5. A fire protection system for a waste refrigerator processing line according to claim 4, characterized in that: A second pulley (810) is fixedly connected to the front side of at least one of the first rotating cylinders (804); a motor frame (807) is fixedly connected to the front side of the absorption tank (801) and the position of the second pulley (810); a first motor (808) is fixedly connected to the front side of the motor frame (807); an output end of the first motor (808) passes through the front side of the motor frame (807) and is fixedly connected to the first pulley (809); and the first pulley (809) is transmission-connected to the second pulley (810) via a synchronous belt.

6. The fire protection system for a waste refrigerator processing line according to claim 1 is characterized in that: The crushing and sorting assembly (9) comprises a second support frame (901) and a third support frame (913), wherein the third support frame (913) is fixedly connected to the right side of the upper surface of the bottom plate (1), the second support frame (901) is fixedly connected above the bottom plate (1) and is located on the left side of the third support frame (913), a crushing bin (902) is fixedly connected above the second support frame (901), and crushing rollers (903) are rotatably connected to the left and right ends of the crushing bin (902), the front sides of the two crushing rollers (903) penetrate the front side wall of the crushing bin (902) and are fixedly connected to transmission gears (904), and the two transmission gears (904) are meshed with each other, and the front end of the right crushing roller (903) is fixedly connected to a third pulley (905), and the left side of the crushing bin (902) is fixedly connected to the end of the suction pipe (814) through a connecting piece.

7. A fire protection system for a waste refrigerator processing line according to claim 6, characterized in that: The left and right sides above the third support frame (913) are both rotatably connected to second rotating cylinders (916); a magnetic separation conveyor belt (917) is transmission-connected between the two second rotating cylinders (916); a sixth pulley (925) is fixedly connected to the front end of the second rotating cylinder (916) on the right side; a second motor (920) is fixedly connected to the right side of the third support frame (913); a fifth pulley (924) is fixedly connected to the output end of the second motor (920); the fifth pulley (924) is transmission-connected to the sixth pulley (925) via a synchronous belt; a third motor (921) is fixedly installed on the left side of the third support frame (913); a transmission rod (922) is fixedly connected to the output end of the third motor (921); a fourth pulley (923) is fixedly connected to the output end of the transmission rod (922); the fourth pulley (923) is transmission-connected to the third pulley (905) via a synchronous belt.

8. The fire protection system for a waste refrigerator processing line according to claim 6 is characterized by: A second baffle (906) is fixedly connected to the right side above the crushing bin (902), a flame sensor (907) is fixedly connected to the left side above the second baffle (906), a third guide plate (926) is fixedly connected to the lower left side of the third support frame (913), a first guide plate (918) is fixedly connected to the right side of the third support frame (913), a second guide plate (919) is fixedly connected to the right side of the bottom of the third support frame (913) and below the magnetic separation conveyor belt (917), a fixed frame (914) is fixedly connected to the right side above the third support frame (913), and a guide hopper (915) is fixedly connected inside the fixed frame (914) and directly below the crushing bin (902).

9. The fire protection system for a waste refrigerator processing line according to claim 6, characterized in that: The crushing and sorting component (9) further comprises a water pool (908), wherein the water pool (908) is fixedly connected to the upper surface of the bottom plate (1), a filter plate (909) is fixedly connected inside the water pool (908), a water pump (910) is fixedly installed inside the water pool (908) and on the left side of the filter plate (909), an output end of the water pump (910) is fixedly connected to a water pump pipe (911), a terminal end of the water pump pipe (911) is clamped to a rear plate of the crushing bin (902), and a misting nozzle (912) is threadedly connected to the terminal end of the water pump pipe (911).

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