Leakage detection structure of freezing dryer evaporator

Abstract

The invention relates to the technical field of leakage detection structures of freezing dryer evaporators, in particular to a leakage detection structure of a freezing dryer evaporator, which comprises a freezing dryer case, an evaporator group is arranged in the freezing dryer case, the evaporator group comprises a compressor, and a pipeline interface of the compressor is connected with an evaporation pipe. Soap is cut into slices, the slices are soaked in warm water to be dissolved into thick liquid soap, the liquid soap is poured into a second liquid storage cylinder and a first liquid storage cylinder, the liquid soap in the first liquid storage cylinder and the second liquid storage cylinder permeates a first sponge block and a second sponge block through a pipeline, a movable block moves in a guide groove of a hanging plate, and the second sponge block and the second sponge block are hung on the hanging plate. The first sponge block and the second sponge block are used for wiping the surface of the evaporation pipe, liquid soap is evenly smeared on the surface of the evaporation pipe, when leakage occurs on the surface of the evaporation pipe, leaked gas impacts the liquid soap, bubbles can be formed on the surface of the liquid soap, then the leakage position is found quickly, and convenience of leakage detection of the evaporation pipe is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of leakage detection structures of cold dryer evaporators, and in particular to a leakage detection structure of cold dryer evaporators. Background Art

[0002] With the continuous development of industrial production, cold dryers, as important equipment in compressed air systems, are widely used in all walks of life. The main function of the cold dryer is to reduce the water content of compressed air by cooling it, thereby achieving the purpose of drying. The evaporator is one of the core components of the cold dryer, and its performance directly affects the operating efficiency and stability of the entire system.

[0003] However, in actual applications, evaporators often leak, causing the dryer to not work properly and even causing a series of safety problems. Traditional leak detection methods mainly rely on manual inspection, which is not only time-consuming and labor-intensive, but also difficult to distinguish the leak location during the detection process by relying solely on manual visual observation. In addition, the detection accuracy is low, making it difficult to detect small leaks in time. Therefore, a leak detection structure for the dryer evaporator is needed to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A leakage detection structure for a cold dryer evaporator comprises a cold dryer case, an evaporator group is installed inside the cold dryer case, the evaporator group comprises a compressor, an evaporating tube is connected to the compressor pipeline interface, and a drying filter is connected to the end of the evaporating tube, the drying filter is suspended on the top of the inner wall of the cold dryer case, a heat dissipation kit is arranged on the outer side of the evaporating tube, a detection accessory is movably installed on the left side of the inner wall of the cold dryer case, an observation accessory is movably installed on the right side of the inner wall of the cold dryer case, the compressor is located in the cavity below the front cover and the case body, and the evaporating tube can be supported by a vertical tube on the front cover and the inner wall of the case body, so that the staff can clean and detect the surface of the evaporating tube conveniently.

[0007] Preferably, the cold dryer box includes a front cover, the back of which is buckled with a box body, and side panels are symmetrically arranged on the front cover and the left and right sides of the box body, one of the side panels is connected to a threaded shaft, and the threaded shaft passes through the side panels of the front cover and a nut is threadedly sleeved thereon, and after the nut is disengaged from the surface of the threaded shaft during sequential rotation, the front cover can be pulled outward, so that the front cover can be conveniently separated from the box body, and then the evaporating tube can be inspected and repaired.

[0008] Preferably, the heat dissipation kit includes a right heat sink, which is connected to a threaded rod at the four corners of the right heat sink, and the threaded rod passes through the through hole of the left heat sink and then a threaded knob is provided on the threaded sleeve. Arc grooves matching the evaporator tube are provided on the inner walls of the right heat sink and the left heat sink, which can facilitate the buckling of the left and right heat sinks to the outside of the evaporator tube and prevent the left and right heat sinks from falling easily during installation. After the threaded rod passes through the through hole of the left heat sink, the threaded knob can be threadedly rotated on the surface of the threaded rod, and then the right heat sink and the left heat sink can be docked and fixed.

[0009] Preferably, a support is connected to the bottom end of the right heat sink, and the vertical cross-section of the support is an L-shaped structure. The support is placed against the inner wall of the box. When the right heat sink and the left heat sink are fixed on both sides of the evaporator tube, the evaporator tube can be suspended and supported, thereby ensuring the stability of the evaporator tube in suspension, reducing the pressure on the evaporator tube, and avoiding deformation of the evaporator tube during long-term vertical placement.

[0010] Preferably, the detection accessory includes a hanging plate, an inner wall of the hanging plate is embedded with a movable block through a guide groove, and a right humidifying component is arranged on the outer side of the movable block, the right humidifying component includes a first rectangular plate connected and fixed to the movable block, a first sponge block is connected to the inner wall of the first rectangular plate, and a first liquid storage cylinder is installed on the outer side of the first rectangular plate, and the first sponge block is displaced by the movement of the first rectangular plate, thereby facilitating the first sponge block to evenly apply the soap liquid to the surface of the evaporating tube, and the soap liquid can be contained by the design of the first liquid storage cylinder so that the soap liquid can slowly leak down due to the friction vibration of the first sponge block.

[0011] Preferably, a left pulling component is arranged opposite to the inner side of the first sponge block, and the left pulling component includes a second rectangular plate, the inner wall of the second rectangular plate is connected to the second sponge block, and the outer side of the second rectangular plate is connected to a handle, the bottom end of the second rectangular plate is provided with a threaded rod inserted through a threaded hole, and the end of the threaded rod is rotatably mounted on the side of the first rectangular plate, the top of the first rectangular plate is connected to a positioning rod, and the positioning rod passes through the top side of the second rectangular plate through a through hole, and a second liquid storage cylinder is installed on the outer side of the top of the second rectangular plate, and a cap is installed on the end cover of the positioning rod, and the threaded rod can control the movement of the second rectangular plate by twisting the threaded rod, so as to change the spacing between the second sponge block and the first sponge block according to the thickness of the evaporation tube, and a second liquid storage cylinder is arranged on the back side of the second rectangular plate, which has the same function as the first liquid storage cylinder. After the soap liquid is poured in before use, the second sponge block and the first sponge block are moistened, so as to facilitate the smearing operation on the surrounding side of the evaporation tube on both sides at the same time.

[0012] Preferably, the inner walls of the first sponge block and the second sponge block are both provided with L-shaped storage grooves, and the inner walls of the first sponge block and the second sponge block are both equidistantly connected with scrapers, and the scrapers are arranged at an angle. The L-shaped storage groove design of the first sponge block and the second sponge block can facilitate a certain degree of liquid storage operation for the soap liquid, thereby extending the wetting time of the first sponge block and the second sponge block.

[0013] Preferably, the movable block is designed in a T-shaped structure, and a ball is embedded in the ball groove on the outside of the movable block, and the ball contacts the inner wall of the hanging plate guide groove. When the movable block moves, the ball friction force on the inner wall of the movable block rolls, which can ensure the smoothness of the handle when holding and pulling, and avoid pauses in the application of soap liquid due to sticking in the pulling.

[0014] Preferably, the observation accessories include a rail plate fixed to the inner wall of the front cover, a slider is embedded in the surface of the rail plate through a guide groove, the end of the slider is connected to a vertical plate, and the right side of the vertical plate is connected to a rubber buckle frame, a battery module is inserted inside the rubber buckle frame, the side of the vertical plate is connected to a cover plate, and a purple lamp is installed on the inner side of the vertical plate opposite to the battery module. The end of the purple lamp is electrically connected to the battery module, and power can be provided by the battery module to ensure the normal illumination of the purple lamp. The purple light emitted by the purple lamp is irradiated on the leaking bubbles on the surface of the evaporator tube, and the bubbles form light that is different from the surrounding light under light refraction and reflection, thereby further improving the detection efficiency of leakage on the surface of the evaporator tube.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. By setting up detection accessories, leakage detection of the pipeline below the evaporator can be realized. Compared with the traditional structure, the device cuts the soap into thin slices, immerses it in warm water, dissolves it into thick soap liquid, and pours the soap liquid into the second liquid storage cylinder and the first liquid storage cylinder. The soap liquid in the first liquid storage cylinder and the second liquid storage cylinder penetrates the first sponge block and the second sponge block through the pipeline, and the movable block moves in the guide groove of the hanging plate to wipe the surface of the evaporator tube with the first sponge block, so that the soap liquid is evenly spread on the surface of the evaporator tube. When there is a leak on the surface of the evaporator tube, the leaked gas impacts the soap liquid, and bubbles can be formed on the surface of the soap liquid, and then the leaking part is quickly found, ensuring the convenience of evaporator tube leakage detection.

[0017] 2. By setting up observation accessories, portable observation of bubbles at the leakage position can be realized. The device is installed at the bottom of the vertical plate through a purple light lamp and powered by a battery module. When the matching switch is turned on, the purple light lamp can illuminate the surface of the evaporation tube. The slider moves in the guide groove of the track plate, so that the purple light can be irradiated on the surface of the bubble to form a light-colored light reflection, further improving the leakage detection efficiency.

[0018] 3. By setting a threaded rotary rod, a scraper and a second rectangular plate, the dust on the surface of the evaporator tube can be cleaned. The device controls the second rectangular plate to move on the surface of the threaded rotary rod by rotating the threaded rotary rod, and adjusts and changes the distance between the first rectangular plate and the second rectangular plate. When the scrapers are set on the inner sides of the first sponge block and the second sponge block, when the first sponge block and the second sponge block are stroked on the surface of the evaporator tube, the scrapers can push the soap liquid to ensure the uniformity of the soap liquid coating. The L-shaped groove design on the inner wall of the first sponge block and the second sponge block can temporarily store the soap liquid to avoid the soap liquid being disconnected during the coating process, which affects the leakage detection of the evaporator tube, and further improves the leakage detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the external structure of a leakage detection structure for a cold dryer evaporator proposed by the present invention;

[0021] Figure 2 A schematic diagram of the internal disassembled structure of a leakage detection structure for a cold dryer evaporator proposed by the present invention;

[0022] Figure 3 A schematic diagram of a three-dimensional disassembled structure of an observation accessory in a leakage detection structure for a cold dryer evaporator proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional disassembled structure of a detection accessory in a leakage detection structure for a cold dryer evaporator proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional disassembled structure of the right humidification component in a leakage detection structure of a cold dryer evaporator proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of a partially disassembled structure of a detection accessory in a leakage detection structure for a cold dryer evaporator proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional disassembled structure of an evaporator group in a leakage detection structure for a cold dryer evaporator proposed by the present invention.

[0027] In the figure: 1. cold dryer box; 11. front cover; 12. box body; 13. side panel; 14. threaded shaft; 15. nut; 2. evaporator group; 21. compressor; 22. evaporation tube; 23. dry filter; 24. heat dissipation kit; 241. right heat sink; 242. threaded rod; 243. left heat sink; 244. threaded knob; 245. support; 3. observation accessories; 31. rail plate; 32. slider; 33. vertical plate; 34. rubber buckle frame; 35. cover Plate; 36, battery module; 37, ultraviolet light; 4, detection accessories; 41, hanging plate; 42, movable block; 43, right humidification component; 431, first rectangular plate; 432, positioning rod; 433, first sponge block; 434, scraper; 435, threaded rotating rod; 436, cap; 437, first liquid storage cylinder; 44, left pulling component; 441, second rectangular plate; 442, handle; 443, second sponge block; 444, second liquid storage cylinder; 45, ball bearing. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Reference Figure 1-7 A leakage detection structure for a cold dryer evaporator comprises a cold dryer case 1, an evaporator group 2 is installed inside the cold dryer case 1, the evaporator group 2 comprises a compressor 21, an evaporation tube 22 is connected to the pipe interface of the compressor 21, and a drying filter 23 is connected to the end of the evaporation tube 22, the drying filter 23 is suspended on the top of the inner wall of the cold dryer case 1, a heat dissipation kit 24 is arranged on the outer side of the evaporation tube 22, a detection accessory 4 is movably installed on the left side of the inner wall of the cold dryer case 1, and an observation accessory 3 is movably installed on the right side of the inner wall of the cold dryer case 1.

[0030] The cold dryer box 1 includes a front cover 11, and a box body 12 is buckled on the back of the front cover 11. Side panels 13 are symmetrically arranged on the left and right sides of the front cover 11 and the box body 12. A threaded shaft 14 is connected to the surface of one of the side panels 13, and the threaded shaft 14 passes through the side panel 13 of the front cover 11 and is threadedly sleeved with a nut 15.

[0031] The heat dissipation kit 24 includes a right heat sink 241 , and threaded rods 242 are connected to the four corners of the right heat sink 241 . The threaded rods 242 pass through the left heat sink 243 through the through holes and are then threadedly sleeved with threaded knobs 244 .

[0032] A support 245 is connected to the bottom end of the right heat sink 241 . The support 245 has an L-shaped vertical section. The support 245 is placed against the inner wall of the box body 12 .

[0033] The detection accessory 4 includes a hanging plate 41, a movable block 42 is embedded in the inner wall of the hanging plate 41 through a guide groove, and a right humidifying component 43 is arranged on the outer side of the movable block 42, the right humidifying component 43 includes a first rectangular plate 431 connected and fixed to the movable block 42, a first sponge block 433 is connected to the inner wall of the first rectangular plate 431, and a first liquid storage cylinder 437 is installed on the outer side of the first rectangular plate 431.

[0034] A left pulling component 44 is arranged opposite to the inner side of the first sponge block 433, and the left pulling component 44 includes a second rectangular plate 441, the inner wall of the second rectangular plate 441 is connected to the second sponge block 443, the outer side of the second rectangular plate 441 is connected to a handle 442, a threaded rotating rod 435 is inserted into the bottom end of the second rectangular plate 441 through a threaded hole, and the end of the threaded rotating rod 435 is rotatably mounted on the side of the first rectangular plate 431, a positioning rod 432 is connected to the top of the first rectangular plate 431, and the positioning rod 432 passes through the top side of the second rectangular plate 441 through a through hole, a second liquid storage cylinder 444 is installed on the outer side of the top of the second rectangular plate 441, and a cap 436 is installed on the end of the positioning rod 432.

[0035] L-shaped storage grooves are formed on the inner walls of the first sponge block 433 and the second sponge block 443 . Scrapers 434 are equidistantly connected to the inner walls of the first sponge block 433 and the second sponge block 443 , and the scrapers 434 are inclined.

[0036] The movable block 42 is designed in a T-shaped structure. A ball 45 is embedded in the outer side of the movable block 42 through a ball groove, and the ball 45 abuts against the inner wall of the guide groove of the hanging plate 41.

[0037] The observation accessory 3 includes a rail plate 31 fixed on the inner wall of the front cover 11, a slider 32 is embedded in the surface of the rail plate 31 through a guide groove, the end of the slider 32 is connected to a vertical plate 33, and a rubber buckle frame 34 is connected to the right side of the vertical plate 33, a battery module 36 is inserted into the rubber buckle frame 34, a cover plate 35 is connected to the side of the vertical plate 33, and a purple light 37 is installed on the inner side of the vertical plate 33 opposite to the battery module 36, and the end of the purple light 37 is electrically connected to the battery module 36.

[0038] The compressor 21 is located in the cavity below the front cover 11 and the box body 12. The evaporation tube 22 can be supported by the vertical tube on the inner wall of the front cover 11 and the box body 12, which is convenient for the staff to clean and inspect the surface of the evaporation tube 22. By separating and disassembling the front cover 11 and the box body 12, it is convenient for the staff to perform maintenance operations on the evaporation tube 22. By rotating the nut 15, the nut 15 can be separated from the surface of the threaded shaft 14 in turn. At this time, the front cover 11 can be pulled outward, which can facilitate the separation of the front cover 11 from the box body 12, and then the evaporation tube 22 can be repaired. A right heat sink 241 and a left heat sink 243 are arranged on both sides of the evaporation tube 22, which can facilitate the maintenance of the evaporation tube 2 2 is used for protection to avoid direct collision of the evaporation tube 22. At the same time, the design of the left heat sink 243 and the right heat sink 241 can perform heat exchange operation synchronously. The inner walls of the right heat sink 241 and the left heat sink 243 are provided with arc-shaped grooves adapted to the evaporation tube 22, which can facilitate the left heat sink 243 and the right heat sink 241 to be buckled on the outer side of the evaporation tube 22 to prevent the left heat sink 243 and the right heat sink 241 from falling down easily during installation. At the same time, after the threaded rod 242 passes through the through hole of the left heat sink 243, the threaded knob 244 can be threadedly rotated on the surface of the threaded rod 242, and then the right heat sink 241 and the left heat sink 243 can be docked and fixed.

[0039] The right heat sink 241 can be supported in a vertical position by the support 245. When the right heat sink 241 and the left heat sink 243 are fixed on both sides of the evaporation tube 22, the evaporation tube 22 can be suspended and supported, thereby ensuring the stability of the evaporation tube 22 in suspension, reducing the pressure of the evaporation tube 22, avoiding the deformation of the evaporation tube 22 during long-term vertical placement, and effectively reducing the probability of the evaporation tube 22 being damaged due to pressure. The movable block 42 can be guided by the guide groove of the hanging plate 41, so that the movable block 42 can stably move laterally in the guide groove of the hanging plate 41. The first sponge block 433 is displaced by moving the first rectangular plate 431, so that the first sponge block 433 can evenly apply the soap liquid to the surface of the evaporation tube 22. The soap liquid can be contained by the design of the first liquid storage cylinder 437, so that the soap liquid can slowly leak out under the friction vibration of the first sponge block 433, and the first sponge block 433 can be continuously wetted. The movement of the second rectangular plate 441 can be guided by the positioning rod 432 to prevent the second rectangular plate 441 from offset when adjusting the distance between it and the first sponge block 433.

[0040] At the same time, by twisting the threaded rotating rod 435, the threaded rotating rod 435 can control the second rectangular plate 441 to move, so that the distance between the second sponge block 443 and the first sponge block 433 can be changed according to the thickness of the evaporation tube 22. A second liquid storage cylinder 444 is arranged on the back of the second rectangular plate 441, which has the same function as the first liquid storage cylinder 437. Before use, the soap liquid is poured to wet the second sponge block 443 and the first sponge block 433, so that the two sides can be smeared on the periphery of the evaporation tube 22 at the same time. 3, when the first sponge block 433 and the second sponge block 443 are close to each other, they can form a covering wrapping operation on the evaporation tube 22, and the handle 442 on the outside of the second rectangular plate 441 is designed to facilitate the staff to hold the handle 442 to pull and push, and control the displacement operation of the second rectangular plate 441 and the first rectangular plate 431. The L-shaped storage groove design of the first sponge block 433 and the second sponge block 443 can facilitate a certain degree of liquid storage operation on the soap liquid, thereby extending the wetting time of the first sponge block 433 and the second sponge block 443.

[0041] Scrapers 434 are equidistantly arranged on the inner walls of the first sponge block 433 and the second sponge block 443, and the soap liquid on the surface of the evaporation tube 22 can be evenly spread by the scrapers 434, and the movement of the movable block 42 is limited by the hanging plate 41. When the movable block 42 moves, the ball 45 on the inner wall of the movable block 42 rolls with friction, which can ensure the smoothness of the grip 442 when it is held and pulled, and avoid the pause of the soap liquid application due to the jamming of the pulling, which affects the efficiency of the soap liquid in finding the position of the leakage hole on the surface of the evaporation tube 22. The rubber buckle frame 34 is used to hold the battery The module 36 is limited and fixed, and power can be provided by the battery module 36, thereby ensuring the normal lighting of the ultraviolet lamp 37. The ultraviolet light irradiated by the ultraviolet lamp 37 is irradiated on the leaking bubbles on the surface of the evaporation tube 22. The bubbles form light that is different from the surrounding light under the refraction and reflection of light, thereby further improving the detection efficiency of the leakage on the surface of the evaporation tube 22. By moving the slider 32 in the guide groove of the track plate 31, the ultraviolet lamp 37 can be easily translated on the side of the evaporation tube 22, so that the light can cover the evaporation tube 22, thereby improving the detection efficiency.

[0042] Working principle: According to the attached Figure 1 With attached Figure 2 As shown, during the detection process, the nut 15 can be rotated to make the nut 15 disengage from the surface of the threaded shaft 14, driving the front cover 11 to separate from the box body 12. At this time, the soap is cut into thin slices and immersed in warm water to dissolve it into a thick soap liquid. The soap liquid is poured into the second liquid storage cylinder 444 and the first liquid storage cylinder 437. The soap liquid penetrates the first sponge block 433 and the second sponge block 443 through the pipeline. At this time, according to the attached Figure 7As shown, before testing, the threaded knob 244 is twisted to separate the threaded knob 244 from the surface of the threaded rod 242. After the four threaded knobs 244 are removed in sequence, the left heat sink 243 and the right heat sink 241 can be separated. At this time, the left heat sink 243 and the threaded rod 242 can be removed to both sides respectively, so that the evaporation tube 22 can be placed independently.

[0043] When checking for leaks, wipe off the stains on the surface of the evaporating tube 22 with gauze. Figure 4 With attached Figure 6 As shown, the threaded rotating rod 435 can be twisted and rotated to make the first rectangular plate 431 move on the surface of the threaded rotating rod 435, and the spacing between the second sponge block 443 and the first sponge block 433 can be adjusted and changed, so that the second sponge block 443 and the first sponge block 433 clamp the surface of the evaporation tube 22, and by holding and pulling the handle 442, the movement of the handle 442 can make the second rectangular plate 441 cooperate with the first rectangular plate 431 to control the second sponge block 443 and the first sponge block 433 to move on the surface of the evaporation tube 22, so that the soap liquid is evenly applied on the surface of the evaporation tube 22, and when the first rectangular plate 431 moves, it can drive the movable block 42 to move in the guide groove of the hanging plate 41, and the movable block 42 can drive the ball 45 to roll frictionally during the movement, so as to ensure the smoothness of the push movement of the movable block 42;

[0044] Secondly, according to the attached Figure 3 As shown, the cover plate 35 can be held and pulled, and the cover plate 35 can drive the vertical plate 33 to move, and the vertical plate 33 drives the slider 32 to move in the guide groove of the track plate 31, and then the ultraviolet lamp 37 is controlled to illuminate and observe the surface of the evaporation tube 22 after the soap liquid is applied. The light of the ultraviolet lamp 37 is irradiated on the surface of the soap liquid containing bubbles to produce color difference, and then it is convenient to adjust the leakage position for rapid positioning and detection.

[0045] 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 leakage detection structure for a cold dryer evaporator, comprising a cold dryer box (1), characterized in that: An evaporator group (2) is installed inside the cold dry machine box (1), and the evaporator group (2) includes a compressor (21). The pipe interface of the compressor (21) is connected to an evaporation tube (22), and the end of the evaporation tube (22) is connected to a drying filter (23). The drying filter (23) is suspended and installed on the top of the inner wall of the cold dry machine box (1). A heat dissipation kit (24) is arranged on the outside of the evaporation tube (22). A detection accessory (4) is movably installed on the left side of the inner wall of the cold dry machine box (1), and an observation accessory (3) is movably installed on the right side of the inner wall of the cold dry machine box (1).

2. The leakage detection structure of a cold dryer evaporator according to claim 1, characterized in that: The cold dryer box (1) comprises a front cover (11), a box body (12) is buckled on the back of the front cover (11), and side panels (13) are symmetrically arranged on the left and right sides of the front cover (11) and the box body (12), a threaded shaft (14) is connected to the surface of one of the side panels (13), and the threaded shaft (14) passes through the side panel (13) of the front cover (11) and is threadedly sleeved with a nut (15).

3. The leakage detection structure of a cold dryer evaporator according to claim 1, characterized in that: The heat dissipation kit (24) comprises a right heat sink (241), wherein the right heat sink (241) is connected to threaded rods (242) at the four corners thereof, and the threaded rods (242) penetrate the left heat sink (243) through a through hole and are then threadedly sleeved with threaded knobs (244).

4. The leakage detection structure of a cold dryer evaporator according to claim 3, characterized in that: The bottom end of the right heat sink (241) is connected to a support (245), the vertical section of the support (245) is an L-shaped structure, and the support (245) is placed against the inner wall of the box body (12).

5. The leakage detection structure of a cold dryer evaporator according to claim 1, characterized in that: The detection accessory (4) comprises a hanging plate (41), a movable block (42) is embedded in the inner wall of the hanging plate (41) through a guide groove, and a right humidifying component (43) is arranged on the outer side of the movable block (42), and the right humidifying component (43) comprises a first rectangular plate (431) connected and fixed to the movable block (42), a first sponge block (433) is connected to the inner wall of the first rectangular plate (431), and a first liquid storage cylinder (437) is installed on the outer side of the first rectangular plate (431).

6. A leakage detection structure for a cold dryer evaporator according to claim 5, characterized in that: A left pulling component (44) is arranged opposite to the inner side of the first sponge block (433), and the left pulling component (44) comprises a second rectangular plate (441), the inner wall of the second rectangular plate (441) is connected to the second sponge block (443), the outer side of the second rectangular plate (441) is connected to a handle (442), the bottom end of the second rectangular plate (441) is provided with a threaded rotating rod (435) through a threaded hole, and the end of the threaded rotating rod (435) is rotatably mounted on the side of the first rectangular plate (431), the top end of the first rectangular plate (431) is connected to a positioning rod (432), and the positioning rod (432) passes through the top side of the second rectangular plate (441) through a through hole, a second liquid storage cylinder (444) is installed on the outer side of the top end of the second rectangular plate (441), and a cap (436) is installed on the end of the positioning rod (432).

7. The leakage detection structure of a cold dryer evaporator according to claim 5, characterized in that: The inner walls of the first sponge block (433) and the second sponge block (443) are both provided with L-shaped storage grooves, and the inner walls of the first sponge block (433) and the second sponge block (443) are both equidistantly connected with scrapers (434), and the scrapers (434) are arranged in an inclined manner.

8. The leakage detection structure of a cold dryer evaporator according to claim 5, characterized in that: The movable block (42) is designed in a T-shaped structure. A ball (45) is embedded in the outer side of the movable block (42) through a ball groove, and the ball (45) abuts against the inner wall of the guide groove of the hanging plate (41).

9. The leakage detection structure of a cold dryer evaporator according to claim 1, characterized in that: The observation accessory (3) comprises a track plate (31) fixed on the inner wall of the front cover (11); a slider (32) is embedded in the surface of the track plate (31) through a guide groove; the end of the slider (32) is connected to a vertical plate (33); and the right side of the vertical plate (33) is connected to a rubber buckle frame (34); a battery module (36) is inserted into the rubber buckle frame (34); the side of the vertical plate (33) is connected to a cover plate (35); a purple light (37) is installed on the inner side of the vertical plate (33) at a position opposite to the battery module (36); and the end of the purple light (37) is electrically connected to the battery module (36).

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