Fireproof system for waste refrigerator treatment line

By combining oxygen and flame sensors with a PLC control system and nozzle angle adjustment mechanism, efficient fire prevention is achieved in the waste refrigerator processing line, solving the fire safety hazard problem in waste refrigerator processing and improving fire extinguishing efficiency and equipment safety.

CN223874280UActive Publication Date: 2026-02-06HUAXING GROUP ENVIRONMENTAL PROTECTION IND DEV
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Patent Information

Application Number
CN202520285018.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2026-02-06
Estimated Expiration
2035-02-21

AI Technical Summary

Technical Problem

Existing methods for disposing of used refrigerators pose fire safety hazards. Conventional fire extinguishing methods are reactive and inefficient, and can easily cause equipment damage and panic among personnel.

Method used

Oxygen and flame sensors are used to detect oxygen content and open flame. The nitrogen and foam storage tanks are adjusted by a PLC control system, and the nozzle angle is adjusted by an electric telescopic rod and gear meshing mechanism to achieve efficient spraying of nitrogen and foam, reduce the concentration of combustible gas and extinguish fire quickly.

Benefits of technology

Effectively control the concentration of combustible gases below the explosion limit, quickly detect and spray nitrogen and foam, improve fire extinguishing efficiency, reduce fire risk, and minimize equipment damage and personnel panic.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223874280U_ABST
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Abstract

The utility model relates to the technical field of waste household appliance treatment equipment, in particular to a waste refrigerator treatment line fireproof system which comprises a bottom plate, and a treatment bin is mounted at the top of the bottom plate. The oxygen sensor is used for detecting the oxygen content in the equipment at an example moment set in a program and effectively controlling the oxygen content to be below an explosion limit, and controlling the nitrogen injection amount of the nitrogen storage tank according to an oxygen content ratio so as to balance the content of combustible gas, and the flame sensor is used for detecting generation of open fire; once open fire is detected to enter a fire extinguishing process, excessive nitrogen and fire extinguishing foam are sprayed, and when a rack moves, a gear and a rotating rod are driven to rotate through a meshing relation, so that a flow dividing pipe and a spray head are driven to rotate for angle adjustment; and when fire extinguishing is needed, the spraying area of nitrogen and foam is increased through back-and-forth rotation of the flow dividing pipe and the spray head, the fire extinguishing efficiency is improved, and therefore the fire catching risk is effectively reduced through multiple technologies, and fire extinguishing is more efficient and accurate.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste household appliance processing equipment, and in particular to a waste refrigerator processing line fire prevention system. BACKGROUND

[0002] At present, the common processing method of waste refrigerators is to directly send them into a crusher for crushing operation in the crusher chamber. However, in this processing flow, the foaming agent (such as cyclopentane) contained in the refrigerator will release flammable gas, and once the concentration of such gas accumulates to a dangerous level, the crusher chamber will have the risk of fire. Therefore, the current waste refrigerator processing method has the safety hazard of causing fire.

[0003] The current conventional method is to use a flame detector to determine whether a fire has occurred, and then execute the next fire extinguishing program. The fire extinguishing method is post-treatment, which cannot effectively prevent and reduce the risk of fire, and a large amount of water is used in the fire extinguishing process, which is easy to cause the equipment to be flooded, and the cleaning and recovery time is long. In addition, the operator is easy to cause mental panic after the fire, so there are certain disadvantages.

[0004] Therefore, in order to solve the above problems, the present application provides a waste refrigerator processing line fire prevention system. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a waste refrigerator processing line fire prevention system to solve the problems raised in the background.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a waste refrigerator processing line fire prevention system, comprising a bottom plate, a processing chamber is installed on the top of the bottom plate, a nitrogen storage tank is installed on one end of the top of the bottom plate, a foam storage tank is installed on the top of the bottom plate close to the nitrogen storage tank, an air extractor is installed on the end of the top of the bottom plate away from the nitrogen storage tank and the foam storage tank, an oxygen sensor is installed in the processing chamber, a flame sensor is installed in the processing chamber close to the oxygen sensor, a fixing frame is installed on the inside top of the processing chamber, a rotating rod is installed between the inner side walls of the fixing frame, a shunt pipe is symmetrically installed on the bottom of the two longer sides of the rotating rod, and a plurality of groups of spray heads are installed at equal intervals on the bottom of the shunt pipe.

[0007] Preferably, an electric telescopic rod is installed on one end of the inside top of the processing chamber, a connecting plate is installed on the output shaft of the electric telescopic rod, a fixed block is installed on the inside top of the processing chamber close to the electric telescopic rod, a rack is installed on the bottom of the fixed block, and one end of the connecting plate away from the electric telescopic rod is connected with the rack.

[0008] Preferably, the bottom of the fixed block is provided with a limiting groove, and a sliding block is arranged in the limiting groove.

[0009] Preferably, the rotating shaft of one end of the rotating rod penetrates through the fixing frame and is provided with a gear, and the gear and the rack are engaged with each other.

[0010] Preferably, the nitrogen storage tank and the foam storage tank are provided with connecting hoses at the top, and one end of the two groups of connecting hoses penetrates into the inner part of the treatment bin and is connected with the two groups of shunt pipes respectively.

[0011] Preferably, the exhaust pipe is arranged at one end of the air extractor, and one end of the exhaust pipe extends into the inner part of the treatment bin.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] The oxygen sensor detects the oxygen content in the device at the time point set in the program, and effectively controls the oxygen content below the explosion limit, and controls the nitrogen injection amount of the nitrogen storage tank through the oxygen content to balance the combustible gas content. The flame sensor is responsible for detecting the generation of open flame. Once the open flame is detected, the fire extinguishing process will be entered, and excessive nitrogen and fire extinguishing foam will be sprayed. When the rack moves, the gear and the rotating rod are driven to rotate through the engagement relationship, thereby driving the shunt pipe and the spray head to rotate for angle adjustment. When fire extinguishing is needed, the shunt pipe and the spray head are rotated back and forth to increase the spraying area of the nitrogen and the foam, thereby accelerating the fire extinguishing efficiency, and effectively reducing the fire risk and making the fire extinguishing more efficient and precise through multiple technologies. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a whole structure schematic view of the utility model Figure 1 It is an internal structure schematic view of the utility model;

[0016] Figure 3 It is a whole structure schematic view of the utility model Figure 2 It is a part structure schematic view of the utility model;

[0017] Figure 4 It is a part structure schematic view of the utility model Figure 3 It is a part structure schematic view of the utility model.

[0018] Explanation of reference signs: 1, bottom plate; 2, processing bin; 3, nitrogen storage tank; 4, foam storage tank; 5, air extractor; 6, oxygen sensor; 7, flame sensor; 8, fixing frame; 9, rotating rod; 10, shunt pipe; 11, spray head; 12, electric telescopic rod; 13, connecting plate; 14, fixed block; 1401, limiting groove; 15, sliding block; 16, rack; 17, gear; 18, connecting hose; 19, exhaust pipe. DETAILED DESCRIPTION

[0019] The following will be described in detail in combination with the accompanying drawings. Figure 1 - Figure 4 The present application is further described in detail.

[0020] A waste refrigerator processing line fire prevention system, referring to Figure 1 - Figure 4 , comprising a bottom plate 1, a processing bin 2 is installed on the top of the bottom plate 1, a nitrogen storage tank 3 is installed on one end of the top of the bottom plate 1, a foam storage tank 4 is installed on the top of the bottom plate 1 close to the nitrogen storage tank 3, an air extractor 5 is installed on one end of the top of the bottom plate 1 away from the nitrogen storage tank 3 and the foam storage tank 4, an oxygen sensor 6 is installed on the wider side of the inside of the processing bin 2, a flame sensor 7 is installed on the wider side of the inside of the processing bin 2 close to the oxygen sensor 6, a fixing frame 8 is installed on the inside top of the processing bin 2, a rotating rod 9 is installed between the inner side walls of the fixing frame 8, a shunt pipe 10 is symmetrically installed on the bottom of the two longer sides of the rotating rod 9, and a plurality of groups of spray heads 11 are installed at equal intervals on the bottom of the shunt pipe 10.

[0021] Referring to Figure 1 - Figure 4 , an electric telescopic rod 12 is installed on one end of the inside top of the processing bin 2, a connecting plate 13 is installed on the output shaft of the electric telescopic rod 12, a fixed block 14 is installed on the inside top of the processing bin 2 close to the electric telescopic rod 12, a rack 16 is installed on the bottom of the fixed block 14, one end of the connecting plate 13 away from the electric telescopic rod 12 is connected with the rack 16, the electric telescopic rod 12 drives the connecting plate 13 to move through telescopic movement, thereby driving the rack 16 to move, a limiting groove 1401 is formed on the bottom of the fixed block 14, a sliding block 15 is arranged in the limiting groove 1401, the outer side surface of the sliding block 15 is slidingly connected with the inner side walls of the limiting groove 1401, the bottom of the sliding block 15 is connected with the rack 16, and through the sliding connection of the sliding block 15 in the limiting groove 1401, it is ensured that the rack 16 can stably move along the predetermined track and will not deviate from the direction due to external interference.

[0022] Referring to Figure 1 - Figure 4, one end of the rotating rod 9 is provided with a gear 17 after the rotating shaft is penetrated through the fixing frame 8, the gear 17 and the gear rack 16 are engaged with each other, when the gear rack 16 moves, the gear 17 and the rotating rod 9 are driven to rotate through the engagement relationship, thereby driving the shunt pipe 10 and the spray head 11 to rotate for angle adjustment, when extinguishing is needed, the spraying area of nitrogen and foam is increased by the back and forth rotation of the shunt pipe 10 and the spray head 11, thereby accelerating the extinguishing efficiency.

[0023] With reference to Figure 1 - Figure 4 , the top of the nitrogen storage tank 3 and the foam storage tank 4 is provided with a connecting hose 18, and one end of the two groups of connecting hoses 18 is penetrated into the inside of the treatment bin 2 and connected with the two groups of shunt pipes 10 respectively, the nitrogen storage tank 3 and the foam storage tank 4 are connected with the shunt pipes 10 in the treatment bin 2, which ensures that nitrogen or foam can be quickly delivered to the spray head 11 when needed.

[0024] With reference to Figure 1 - Figure 4 , one end of the air extractor 5 is provided with an exhaust pipe 19, one end of the exhaust pipe 19 extends into the inside of the treatment bin 2, the exhaust pipe 19 connects the air extractor 5 with the inside of the treatment bin 2, and continuously extracts the gas generated by the broken waste refrigerator in the equipment, thereby continuously reducing the amount of combustible gas in the equipment.

[0025] The implementation principle of the waste refrigerator treatment line fire prevention system is as follows: during use of the waste refrigerator treatment line fire prevention system, the oxygen sensor 6, the flame sensor 7, the electromagnetic valves on the nitrogen storage tank 3 and the foam storage tank 4, and the electric telescopic rod 12 are connected with an external PLC control system, the waste refrigerator is crushed in the inside of the treatment bin 2, the oxygen sensor 6 detects the oxygen content in the device at a time point set in the program, effectively controls the oxygen content below the explosion limit, and balances the combustible gas content by controlling the nitrogen injection amount of the nitrogen storage tank 3 through the oxygen content, the air extractor 5 continuously extracts the gas generated during crushing of the waste refrigerator in the treatment bin 2 through the exhaust pipe 19, continuously reduces the amount of combustible gas in the device, the flame sensor 7 is responsible for detecting the generation of open flames, once the open flames are detected, the device enters the fire extinguishing process and sprays excess nitrogen and fire extinguishing foam, the nitrogen storage tank 3 and the foam storage tank 4 deliver the nitrogen and the foam into the corresponding distribution pipes 10 through the connecting hoses 18 and spray them out through the multiple groups of nozzles 11 for fire extinguishing, and the electric telescopic rod 12 is started, the electric telescopic rod 12 drives the connecting plate 13 to move through telescopic movement, thereby driving the rack 16 to move, the rack 16 can stably move along the predetermined track through the sliding connection of the sliding block 15 in the limiting groove 1401, and the rack 16 cannot deviate from the direction due to external interference, when the rack 16 moves, the rack 16 drives the gear 17 and the rotating rod 9 to rotate through the meshing relationship, thereby driving the distribution pipe 10 and the nozzle 11 to rotate for angle adjustment, when fire extinguishing is needed, the distribution pipe 10 and the nozzle 11 are rotated back and forth to increase the spraying area of the nitrogen and the foam and accelerate the fire extinguishing efficiency, thereby effectively reducing the fire risk and making the fire extinguishing more efficient and accurate through multiple technologies.

[0026] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0027] Secondly: the utility model discloses the embodiment in the drawing, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0028] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc.

[0029] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A fire prevention system for a waste refrigerator processing line comprising a floor (1), characterized in that: The top of the bottom plate (1) is provided with a processing bin (2), one end of the top of the bottom plate (1) is provided with a nitrogen storage tank (3), the top of the bottom plate (1) is provided with a foam storage tank (4) close to the nitrogen storage tank (3), one end of the top of the bottom plate (1) is provided with an air extractor (5) away from the nitrogen storage tank (3) and the foam storage tank (4), the inside of the processing bin (2) is provided with an oxygen sensor (6), the inside of the processing bin (2) is provided with a flame sensor (7) close to the oxygen sensor (6), the inside top of the processing bin (2) is provided with a fixed frame (8), the inside wall of the fixed frame (8) is provided with a rotating rod (9), the bottom of the rotating rod (9) is provided with a shunt pipe (10) symmetrically on both longer sides, and the bottom of the shunt pipe (10) is provided with a plurality of groups of spray heads (11) at equal intervals.

2. The fire prevention system for a waste refrigerator processing line according to claim 1, characterized in that: One end of the inside top of the processing bin (2) is provided with an electric telescopic rod (12), the output shaft of the electric telescopic rod (12) is provided with a connecting plate (13), the inside top of the processing bin (2) is provided with a fixed block (14) close to the electric telescopic rod (12), the bottom of the fixed block (14) is provided with a rack (16), and one end of the connecting plate (13) away from the electric telescopic rod (12) is connected with the rack (16).

3. The fire prevention system for a waste refrigerator processing line according to claim 2, characterized in that: The bottom of the fixed block (14) is provided with a limiting groove (1401), the inside of the limiting groove (1401) is provided with a sliding block (15), the outside of the sliding block (15) is connected with the inside wall of the limiting groove (1401) in sliding mode, and the bottom of the sliding block (15) is connected with the rack (16).

4. The fire prevention system for a waste refrigerator processing line according to claim 1, wherein: One end of the rotating rod (9) is provided with a gear (17) penetrating through the fixed frame (8), and the gear (17) is engaged with the rack (16).

5. The fire prevention system for a waste refrigerator processing line according to claim 1, wherein: The top of the nitrogen storage tank (3) and the foam storage tank (4) is provided with a connecting hose (18), and one end of the two groups of connecting hoses (18) penetrates into the inside of the processing bin (2) and is connected with the two groups of shunt pipes (10) respectively.

6. The fire prevention system for a waste refrigerator processing line according to claim 1, wherein: One end of the air extractor (5) is provided with an exhaust pipe (19), and one end of the exhaust pipe (19) extends into the inside of the processing bin (2).