CN115074653A

CN115074653A - Hot-galvanize iron wire cooling passivating device

Info

Publication number: CN115074653A
Application number: CN202210969971.1A
Authority: CN
Inventors: 汤琴
Original assignee: Rugao Fumeilong Metal Products Co ltd
Current assignee: Rugao Fumeilong Metal Products Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-09-20
Anticipated expiration: 2042-08-12
Also published as: CN115074653B

Abstract

The invention discloses a hot-dip galvanized iron wire cooling and passivating device which comprises a cooling box, wherein communicating ports are formed in the inner walls of the left side and the right side of the cooling box respectively, an adjusting plate is vertically arranged in the cooling box and is in sliding connection with the inner wall of the cooling box, an opening is horizontally formed in the middle of the adjusting plate, and the adjusting plate divides the cooling box into a cooling chamber on the left side and an adjusting chamber on the right side; and the upper end of the left side of the cooling box is provided with a gas cooling box. The rectangle box the device is installed on the right side of cooler bin in-process that uses, through setting up the low temperature region, lets the hot-galvanize iron wire directly contact with dry cold air after being hot-dipped, plays better quick cooling effect, still is provided with adjusting module in addition, can adjust refrigerated time, not only can avoid cooling too little or the surplus condition, and can avoid the cold energy of unnecessary extravagant simultaneously.

Description

Hot-galvanize iron wire cooling passivating device

Technical Field

The invention relates to the field of iron wire processing, in particular to a hot-dip galvanized iron wire cooling and passivating device.

Background

The temperature of the hot-dip galvanized iron wire is high after casting, so that heat is difficult to dissipate in time, the timely proceeding of the next process is influenced, and meanwhile, if the hot-dip galvanized iron wire just cast is passivated in time, the hot-dip galvanized iron wire is corroded due to steam in the air, so that the service life of the hot-dip galvanized iron wire is shortened;

therefore, the chinese patent with publication number CN112063948A discloses a cooling and passivating device for hot-dip galvanized iron wires, which comprises a machine body, wherein a plurality of support legs are uniformly arranged at the bottom end of the machine body, a heat dissipation cavity is arranged in the machine body, a feeding cavity is arranged at one end of the machine body, a discharging cavity is arranged at the other end of the machine body, a hot-dip galvanized iron wire channel is arranged in the heat dissipation cavity, two ends of the hot-dip galvanized iron wire channel are respectively communicated with the discharging cavity and the feeding cavity, a discharging roller matched with the hot-dip galvanized iron wire channel is arranged in the discharging cavity, the discharging roller is rotatably connected to the side wall of the discharging cavity through a third rotating shaft, a feeding roller is arranged below the inner cavity of the feeding cavity, and the feeding roller is rotatably connected to the side wall of the feeding cavity through a first rotating shaft; when the cooling device is used, cold water is injected into the heat dissipation cavity, so that the cold water directly cools the galvanized iron wire through the hot galvanized iron wire channel, and the cast hot galvanized iron wire can be cooled in time, thereby ensuring the subsequent processing quality of the hot galvanized iron wire;

however, in the above scheme, the galvanized iron wire is finally cooled by using cold water to cool the channel of the galvanized iron wire, but actually, the galvanized iron wire is not in contact with the inner wall of the channel, that is, air is actually used as a heat conducting medium for heat dissipation, but the air has poor temperature conducting property, and the actual heat dissipation effect is general.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a hot-dip galvanized iron wire cooling and passivating device which is characterized in that a low-temperature area is arranged in the using process of the device, so that the hot-dip galvanized iron wire is directly contacted with dry cold air after being hot-dipped, a better quick cooling effect is achieved, and in addition, an adjusting module is arranged, the cooling time can be adjusted, the condition of too little or excessive cooling can be avoided, and meanwhile, unnecessary cold energy waste can be avoided.

In order to achieve the purpose, the invention adopts the following technical scheme:

a hot dip galvanizing iron wire cooling passivation device comprises a cooling box, wherein communication ports are formed in the inner walls of the left side and the right side of the cooling box respectively, an adjusting plate is vertically arranged in the cooling box and is connected with the inner wall of the cooling box in a sliding mode, an opening is horizontally formed in the middle of the adjusting plate, and the adjusting plate divides the cooling box into a cooling chamber on the left side and an adjusting chamber on the right side;

a gas cooling box is arranged at the upper end of the left side of the cooling box, and cooling modules are arranged inside the gas cooling box and the cooling chamber together;

the right side of the cooling box is provided with a rectangular box, and the rectangular box and the adjusting chamber are internally provided with an adjusting module together.

Preferably, the cooling module is including installing at the left circulating fan of cooling box, gaseous cooling incasement is provided with cooling chamber, reservoir chamber and reposition of redundant personnel chamber, the reservoir chamber is located the below in cooling chamber, the reposition of redundant personnel chamber is located the left in cooling chamber, the reposition of redundant personnel chamber is through a plurality of reposition of redundant personnel holes and cooling chamber intercommunication, circulating fan's air-out end and reposition of redundant personnel chamber intercommunication, hollow plate is installed at the interior top of cooling chamber, the interior bottom of hollow plate is provided with a plurality of air outlets, the right side space in cooling chamber is through the hollow plate intercommunication of communicating pipe, the level is provided with the air inlet chamber in the regulating plate, air inlet chamber's left side space passes through air intake and cooling chamber intercommunication, circulating fan's air inlet end passes through hose and air inlet chamber intercommunication.

Preferably, the interior top in cooling chamber is inlayed and is equipped with horizontal form and leads the warm board, the equidistant fixedly connected with of lower extreme of horizontal form leads the warm board of a plurality of perpendicular forms of the lower extreme, and is a plurality of the form of erectting is led the warm board and will be separated into a plurality of ventilation duct in the cooling chamber, refrigeration component is installed at the interior top of gaseous cooling case, refrigeration component's cold junction and horizontal form lead the warm board contact, it leads warm board and reservoir chamber through a plurality of outfalls intercommunication to erect the form.

Preferably, a temperature control assembly is installed on the left side of the adjusting plate and used for controlling the circulating fan and the refrigerating assembly.

Preferably, the adjusting module includes the piston plate of sliding connection in the rectangle box, the slabby electro-magnet is installed to the interior bottom of rectangle box, the piston plate has magnetism, the slabby electro-magnet circular telegram back repels with piston plate looks proximal surface like one sex, the upper end of piston plate is through the interior top elastic connection of first spring with the rectangle box, be provided with two expansion capsules, two between the right side of regulating plate and the right side inner wall of regulating chamber the expansion capsule communicates respectively has two branch pipes, two the other end of branch pipe communicates jointly has the trunk line, the other end of trunk line and the headspace intercommunication of rectangle box, install the solenoid valve in the trunk line.

Preferably, be located the right side the interior top of intercommunication mouth is provided with the spout, be provided with gliding movable plate from top to bottom in the spout, the upper end of movable plate is through the interior top elastic connection of second spring with the spout, two risers of the lower extreme symmetry fixedly connected with of movable plate, two the opposite face of riser bottom part rotates and is connected with the wheel that rolls, the last level of movable plate runs through and is equipped with the conductor wire, it is equipped with the resistance strip to inlay on the left side inner wall of spout, it is equipped with the electricity strip to inlay on the right side inner wall of spout, install control switch on the right side inner wall of cooler bin, cooperate with solenoid valve and plate-shaped electro-magnet.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the prior art, directly utilize the cold air to cool off, the cooling effect is better, and the air drying mode lets its direct drying after refrigerating to it simultaneously, with unnecessary steam precipitation, so compare the active carbon drying, drying effect when continuous drying is better.

2. When the thin iron wire cools off, the inner wall width is less about the cooling chamber, and actual cooling time is shorter, and during the thick iron wire cooling, actual cooling time is longer, when in actual use, can be according to the iron wire of different thicknesses, its refrigerated time of automatically regulated, compares with prior art, adopts adjustable cooling, on guaranteeing the basis of cooling effect, has avoided unnecessary cold energy extravagant.

Drawings

FIG. 1 is a schematic structural view of a hot dip galvanized iron wire cooling and passivating device according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a diagram of the normal state of FIG. 3;

FIG. 5 is a plan view of the connection between the horizontal heat conducting plate and the plurality of vertical heat conducting plates.

In the figure: the cooling device comprises a cooling box 1, a cooling chamber 2, a rectangular box 3, a circulating fan 4, a communication port 5, an adjusting plate 6, an adjusting chamber 7, a gas cooling box 8, a hollow plate 9, an air outlet 10, a communication pipe 11, a temperature control component 12, an opening 13, an air inlet cavity 14, an air inlet 15, a hose 16, a telescopic bag 17, a branch pipe 18, a main pipeline 19, a piston plate 20, a first spring 21, a plate-shaped electromagnet 22, a cooling cavity 23, a flow dividing cavity 24, a flow dividing hole 25, a refrigeration component 26, a transverse temperature guide plate 27, a vertical temperature guide plate 28, a water storage chamber 29, a water falling port 30, a sliding groove 31, a moving plate 32, a resistance strip 33, a power-on strip 34, a vertical plate 35, a second spring 36 and a rolling wheel 37.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, a hot dip galvanizing iron wire cooling and passivating device comprises a cooling box 1, wherein communication ports 5 are respectively arranged on the inner walls of the left side and the right side of the cooling box 1, the communication ports 5 are round ports, the radius of the communication ports is slightly larger than the diameter of the maximum diameter iron wire in actual production, an adjusting plate 6 is vertically arranged in the cooling box 1, the adjusting plate 6 is in sliding connection with the inner wall of the cooling box 1, an opening 13 is horizontally arranged in the middle of the adjusting plate 6, a wind shielding curtain can be arranged at the opening 13 in practice to reduce diffusion of cold air, and the adjusting plate 6 divides the interior of the cooling box 1 into a cooling chamber 2 on the left side and an adjusting chamber 7 on the right side;

as an implementation mode of the invention, a gas cooling box 8 is installed at the upper end of the left side of a cooling box 1, a cooling module is arranged inside the gas cooling box 8 and inside a cooling chamber 2 together, the cooling module comprises a circulating fan 4 installed at the left side of the cooling box 1, a cooling chamber 23, a water storage chamber 29 and a diversion chamber 24 are arranged in the gas cooling box 8, the water storage chamber 29 is positioned below the cooling chamber 23, the diversion chamber 24 is positioned at the left side of the cooling chamber 23, the diversion chamber 24 is communicated with the cooling chamber 23 through a plurality of diversion holes 25, the air outlet end of the circulating fan 4 is communicated with the diversion chamber 24, a hollow plate 9 is installed at the inner top of the cooling chamber 2, a plurality of air outlets 10 are arranged at the inner bottom of the hollow plate 9, the right space of the cooling chamber 23 is communicated with the hollow plate 9 through a communicating pipe 11, an air inlet chamber 14 is horizontally arranged in an adjusting plate 6, the left space of the air inlet chamber 14 is communicated with the cooling chamber 2 through an air inlet 15, the air inlet end of the circulating fan 4 is communicated with the air inlet cavity 14 through a hose 16;

as an implementation mode of the invention, a horizontal heat conducting plate 27 is embedded at the inner top of the cooling cavity 23, a plurality of vertical heat conducting plates 28 are fixedly connected at equal intervals at the lower end of the horizontal heat conducting plate 27, the cooling cavity 23 is divided into a plurality of ventilation air channels by the plurality of vertical heat conducting plates 28, by this way, gas can be uniformly contacted with the plurality of vertical heat conducting plates 28 to realize more uniform refrigeration effect, a refrigeration component 26 is installed at the inner top of the gas cooling box 8, the refrigeration component 26 consists of a semiconductor refrigeration sheet and a matched heat dissipation fan, which is the existing common refrigeration means, the cold end of the refrigeration component 26 is contacted with the horizontal heat conducting plate 27, the vertical heat conducting plate 28 is communicated with the water storage chamber 29 through a plurality of water falling ports 30, a temperature control component 12 is installed at the left side of the adjusting plate 6, the temperature control component 12 is used for controlling the circulating fan 4 and the refrigeration component 26, the temperature control component 12 consists of a temperature sensor and a controller, through the cooperation of outside procedure and temperature sensor controller, realize letting 2 inside temperatures in cooling chamber be in a settlement temperature, guarantee subsequent cooling effect, in order to guarantee the rapid cooling to the hot-dip iron wire, so the settlement temperature is far less than the final temperature that needs to cool down the hot-dip iron wire to.

As an embodiment of the invention, a rectangular box 3 is installed on the right side of a cooling box 1, an adjusting module is jointly arranged in the rectangular box 3 and an adjusting chamber 7, the adjusting module comprises a piston plate 20 connected in the rectangular box 3 in a sliding manner, a plate-shaped electromagnet 22 is installed at the inner bottom of the rectangular box 3, the rectangular box 3 is made of a magnetic isolating material, the influence on iron wires caused by the plate-shaped electromagnet 22 after being electrified is avoided, the piston plate 20 has magnetism, the plate-shaped electromagnet 22 after being electrified is repelled by the same polarity on the surface adjacent to the piston plate 20, the upper end of the piston plate 20 is elastically connected with the inner top of the rectangular box 3 through a first spring 21, two telescopic bags 17 are arranged between the right side of an adjusting plate 6 and the right side inner wall of the adjusting chamber 7, the two telescopic bags 17 are respectively communicated with two branch pipes 18, the other ends of the two branch pipes 18 are jointly communicated with a main pipe 19, the other end of the main pipe 19 is communicated with the top space of the rectangular box 3, an electromagnetic valve is arranged in the main pipeline 19;

as an embodiment of the invention, a chute 31 is arranged at the inner top of the communication port 5 positioned at the right side, a moving plate 32 capable of sliding up and down is arranged in the chute 31, the upper end of the moving plate 32 is elastically connected with the inner top of the chute 31 through a second spring 36, the lower end of the moving plate 32 is symmetrically and fixedly connected with two vertical plates 35, the opposite surfaces of the bottom parts of the two vertical plates 35 are rotatably connected with rolling wheels 37, a conducting wire is horizontally arranged on the moving plate 32 in a penetrating way, a control switch is arranged on the right inner wall of the cooling box 1 and matched with an electromagnetic valve and a plate-shaped electromagnet 22, a resistance strip 33 is embedded on the left inner wall of the chute 31, in order to ensure that only a small distance is changed, the current passing through the plate-shaped electromagnet 22 can be greatly changed, so that the resistance strip 33 adopts a resistor with a large change of resistance value at a small distance, an electric connecting strip 34 is embedded on the right inner wall of the chute 31, the electric energy meter is characterized in that an external power supply is further arranged, the external power supply and the control switch form a power supply part, the anode of the power supply part is communicated with the lower portion of the resistor strip 33, the cathode of the power supply part, the plate-shaped electromagnet 22 and the power connection strip 34 are electrically connected, the resistor strip 33, the conductive wire, the power connection strip 34 and the plate-shaped electromagnet 22 form a branch load, the electromagnetic valve is connected in parallel in the branch load, namely after the control switch is closed, the two branches are powered on (the conductive wire is required to be in contact with the resistor strip 33 and the power connection strip 34), when an iron wire with the smallest diameter is adopted, the rolling wheel 37 is just pushed to move upwards until the conductive wire is just in contact with the lowest portion of the resistor strip 33 and the power connection strip 34, the resistance of the access circuit is the smallest at the moment, and when the iron wire does not exist, the conductive wire cannot be in contact with the resistor strip 33 and the power connection strip 34.

In the invention, an iron wire sequentially passes through a left communication port 5, an opening 13 and a right communication port 5 at a dotted line in the middle of figure 1 and is driven by an external rolling module to move from left to right;

in the above process, when the temperature in the cooling chamber 2 is higher than the set temperature by the arrangement of the temperature control component 12, the circulating fan 4 and the refrigeration component 26 are started, after the refrigeration component 26 is started, the transverse heat conducting plate 27 can be in a low-temperature state, the low temperature on the horizontal heat conducting plate 27 will be transmitted to the plurality of vertical heat conducting plates 28, and the start of the circulating fan 4 will generate a circulating air flow of the cooling chamber 2 → the air inlet chamber 14 → the circulating fan 4 → the diversion chamber 24 → a plurality of ventilation air channels → the hollow plate 9 → the cooling chamber 2, when the circulating air flows through the ventilation air channels, can be rapidly cooled by a plurality of vertical heat conducting plates 28, not only the air temperature can be lowered, in addition, the air can be refrigerated, redundant water vapor is separated out, the purpose of drying the air is realized, and the separated water vapor is in a water drop shape and slides to the water storage chamber 29 under the action of gravity on the low-temperature vertical heat conducting plate 28;

after the temperature is reduced to be close to the set temperature, the refrigerating assembly 26 and the circulating fan 4 are closed, and are started after the temperature is increased again, so that the cooling chamber 2 is always kept at the set lower temperature, and due to the arrangement of the refrigerating assembly 26, the air can be cooled, and simultaneously, the air can be dried, so that the influence of water vapor on iron wires after hot-dip in the harbor is avoided;

when the subsequent iron wires slowly pass through the cooling chamber 2, the subsequent iron wires can be rapidly cooled, so that the effect of rapidly cooling and passivating the subsequent iron wires is achieved, compared with the prior art, cold air is directly used for cooling, the cooling effect is better, meanwhile, the air drying mode is to directly dry the subsequent iron wires after refrigeration, and redundant water vapor is separated out, so that the drying effect is better when compared with the drying of active carbon and continuous drying;

in addition, after the iron wire is installed each time, the control switch can be started once, after the control switch is started, the electromagnetic valve and the plate-shaped electromagnet 22 are electrified, the plate-shaped electromagnet 22 can provide a repulsive force to the piston plate 20 after being electrified, so that the piston plate moves upwards, the first spring 21 is compressed, the air in the top space of the rectangular box 3 is pressed into the two telescopic bags 17, the telescopic bags 17 are extended, the adjusting plate 6 is pushed to move left, so that the space of the cooling chamber 2 becomes small, and then the control switch is turned off, the solenoid valve and the plate-shaped electromagnet 22 are powered off, and the piston plate 20 tends to move down due to the elastic action of the first spring 21, but since the solenoid valve is powered off to seal the main pipe 19, therefore, the gas in the two telescopic bags 17 can not be pumped away, and the adjusting plate 6 is still in a left moving state (the adjusting plate needs to be closed to move left later, and the adjusting plate is closed after a control switch is opened for a while when no iron wire exists);

it should be noted that after zinc plating is performed by using iron wires with different thicknesses, the heat content per cross section is different, so in a stable low-temperature environment, the time required for cooling the thick iron wire to a required temperature is longer, while in the above scheme, the iron wires with different thicknesses pass through the rolling wheels 37, and the heights of the iron wires moving upwards are different, the thicker the iron wires, the larger the distance of the electric connecting strip 34 moving upwards is, the larger the resistance connected to the circuit of the plate-shaped electromagnet 22 is, the smaller the current is, the smaller the magnetism generated by the plate-shaped electromagnet 22 is, the smaller the moving distance of the piston plate 20 is, and finally, the expansion degree of the bellows 17 is smaller, and the distance of the adjusting plate 6 moving leftwards is smaller;

that is to say, when the thin iron wire cooling, the inner wall width is the less about cooling chamber 2, and actual cooling time is shorter, and during the thick iron wire cooling, actual cooling time is longer, and during the in-service use, can be according to the iron wire of different thicknesses, its refrigerated time of automatically regulated, guaranteed the basis of cooling effect, avoided unnecessary cold energy waste, it is worth mentioning at this moment, and here service environment is under the condition that the layer thickness of different thickness iron wire hot dipping is the same.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A hot dip galvanizing iron wire cooling passivation device comprises a cooling box (1), and is characterized in that communication ports (5) are formed in the inner walls of the left side and the right side of the cooling box (1), an adjusting plate (6) is vertically arranged in the cooling box (1), the adjusting plate (6) is connected with the inner wall of the cooling box (1) in a sliding mode, an opening (13) is horizontally formed in the middle of the adjusting plate (6), and the adjusting plate (6) divides the interior of the cooling box (1) into a cooling chamber (2) on the left side and an adjusting chamber (7) on the right side;

a gas cooling box (8) is arranged at the upper end of the left side of the cooling box (1), and cooling modules are arranged inside the gas cooling box (8) and the cooling chamber (2) together;

rectangular box (3) are installed on the right side of cooler bin (1), be provided with adjusting module jointly in rectangular box (3) and regulating chamber (7).

2. The hot dip galvanizing iron wire cooling and passivating device according to claim 1, wherein the cooling module comprises a circulating fan (4) installed on the left side of the cooling box (1), a cooling cavity (23), a water storage chamber (29) and a shunt cavity (24) are arranged in the gas cooling box (8), the water storage chamber (29) is located below the cooling cavity (23), the shunt cavity (24) is located on the left side of the cooling cavity (23), the shunt cavity (24) is communicated with the cooling cavity (23) through a plurality of shunt holes (25), an air outlet end of the circulating fan (4) is communicated with the shunt cavity (24), a hollow plate (9) is installed at the inner top of the cooling chamber (2), a plurality of air outlets (10) are arranged at the inner bottom of the hollow plate (9), and the right space of the cooling cavity (23) is communicated with the hollow plate (9) through a communicating pipe (11), the level is provided with air inlet chamber (14) in regulating plate (6), the left side space in air inlet chamber (14) passes through air intake (15) and cooling chamber (2) intercommunication, the air inlet end of circulating fan (4) passes through hose (16) and air inlet chamber (14) intercommunication.

3. A hot dip galvanizing iron wire cooling and passivating device according to claim 2, wherein a transverse heat conducting plate (27) is embedded in the inner top of the cooling cavity (23), a plurality of vertical heat conducting plates (28) are fixedly connected to the lower end of the transverse heat conducting plate (27) at equal intervals, the cooling cavity (23) is divided into a plurality of ventilation air ducts by the plurality of vertical heat conducting plates (28), a refrigerating assembly (26) is installed at the inner top of the gas cooling box (8), the cold end of the refrigerating assembly (26) is in contact with the transverse heat conducting plate (27), and the vertical heat conducting plates (28) are communicated with a water storage chamber (29) through a plurality of water falling ports (30).

4. A hot-dip galvanized iron wire cooling and passivating device according to claim 3, characterized in that a temperature control component (12) is installed on the left side of the regulating plate (6), and the temperature control component (12) is used for controlling the circulating fan (4) and the refrigerating component (26).

5. A hot dip galvanizing iron wire cooling and passivating device according to claim 1, characterized in that the adjusting module comprises a piston plate (20) slidably connected in a rectangular box (3), a plate-shaped electromagnet (22) is installed at the inner bottom of the rectangular box (3), the piston plate (20) has magnetism, the plate-shaped electromagnet (22) is in like-pole repulsion with the adjacent surface of the piston plate (20) after being electrified, the upper end of the piston plate (20) is elastically connected with the inner top of the rectangular box (3) through a first spring (21), two expansion capsules (17) are arranged between the right side of the adjusting plate (6) and the right side inner wall of the adjusting chamber (7), the two expansion capsules (17) are respectively communicated with two branch pipes (18), the other ends of the two branch pipes (18) are commonly communicated with a main pipe (19), and the other end of the main pipe (19) is communicated with the top space of the rectangular box (3), an electromagnetic valve is installed in the main pipeline (19).

6. A hot-dip galvanizing iron wire cooling and passivating device according to claim 5, characterized in that a sliding groove (31) is arranged at the inner top of the communicating port (5) at the right side, a moving plate (32) capable of sliding up and down is arranged in the sliding groove (31), the upper end of the moving plate (32) is elastically connected with the inner top of the sliding groove (31) through a second spring (36), the lower end of the moving plate (32) is symmetrically and fixedly connected with two vertical plates (35), the opposite surfaces of the bottom parts of the two vertical plates (35) are rotatably connected with rolling wheels (37), a conductive wire is horizontally arranged on the moving plate (32) in a penetrating manner, a resistance strip (33) is embedded on the inner wall of the left side of the sliding groove (31), an electric connection strip (34) is embedded on the inner wall of the right side of the sliding groove (31), and a control switch is installed on the inner wall of the right side of the cooling box (1), the electromagnetic valve is matched with a plate-shaped electromagnet (22).