Ventilation and heat dissipation device for steam engine room

Abstract

The utility model discloses a ventilation and heat dissipation device for a steam engine room, which relates to the technical field of ventilation and heat dissipation, and is technically characterized by comprising a shell and two support plates fixedly arranged on the bottom surface of the shell, two groups of self-locking wheels are fixedly arranged on the bottom surfaces of the two support plates respectively, and a dust removal mechanism and a cooling mechanism are arranged in the shell; the steam engine room has the technical effects that the dust removal mechanism is arranged to filter air during ventilation and heat dissipation of the air in the steam engine room, so that dust in the cooled air can be reduced, large impurities in the air can be filtered by arranging a filter block in the filtering process, and the cooling effect is improved. In addition, meshes of the filter block can be dredged through left-right reciprocating movement of the needle plate during filtering, blockage after long-time use is avoided, dust in the air can be secondarily treated by arranging the dust removal part, and the dust in the air can fall down by spraying water into the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation and heat dissipation, in particular to a ventilation and heat dissipation device for a steam engine room. Background Art

[0002] Due to its special production process, the steam engine room of a thermal power plant has many heat-generating equipment and complex thermal pipelines connected to it. A large amount of heat generated is accumulated on the top of the room. In order to ensure the indoor production environment in summer, roof fans are often installed to remove heat and perform cooling and ventilation.

[0003] The China Patent Network has published a steam engine room cooling and ventilation mechanism, with the publication number CN219868252U, which includes a cooling and ventilation assembly, wherein the cooling and ventilation assembly includes a cold air box, a ventilation pipe and a bracket, wherein the cold air box is installed on the top of the bracket, and the ventilation pipe is connected to the bottom of the cold air box and is located on the inner side of the bracket, and further includes a filter assembly and a connecting assembly, wherein the filter assembly is installed on the side of the cold air box, and the connecting assembly is installed at one end of the ventilation pipe; by setting the conveniently disassembled and replaced clamping structure, the original bolt screwing fixing method is replaced with a clamping limiting method, and when the surface of the filter screen is dusty, it can be directly disassembled through the clamping structure, which is convenient for cleaning the filter screen, thereby better cooling and ventilation use, and improving the convenience of the structure;

[0004] The above device filters the air through a filter when cooling and ventilating the air inside the steam engine room. The filter cannot filter smaller dust in the air during filtering. Therefore, during long-term use, dust will accumulate inside the chassis, thereby affecting the cooling efficiency. Therefore, a steam engine room ventilation and heat dissipation device is proposed. Utility Model Content

[0005] Technical Solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ventilation and heat dissipation device for a steam engine room, comprising a shell and two support plates fixedly arranged on the bottom surface of the shell, two sets of self-locking wheels are fixedly arranged on the bottom surfaces of the two support plates, and a dust removal mechanism and a cooling mechanism are arranged inside the shell;

[0007] The dust removal mechanism is located on the left side of the cooling mechanism;

[0008] The dust removal mechanism includes a filtering part and a dust removal part;

[0009] The filter unit includes two air inlet frames and a first motor, and the dust removal unit includes a water pump and a spray pipe;

[0010] A reciprocating threaded rod is rotatably provided on the bottom surface of the inner side of the shell through a bearing seat 1, and the top surface of the reciprocating threaded rod is rotatably connected to the top surface of the inner side of the shell through a bearing seat 2. A moving block is threadedly sleeved on the surface of the reciprocating threaded rod, and the top surface of the moving block is fixedly connected to the bottom surface of the nozzle. A hose is fixedly provided on the front side of the nozzle, and the front side of the hose slides through the front end surface of the inner side of the shell and extends to the front of the shell. The front side of the shell is fixedly connected to the back side of the water pump, and the top surface of the water outlet end of the water pump is connected to the bottom surface of the hose.

[0011] Preferably, the cooling mechanism includes a refrigerator, the front side of the refrigerator is fixedly connected to the back side of the shell, a refrigeration pipe is fixedly arranged on the bottom side of the liquid outlet end of the refrigerator, the front side of the refrigeration pipe is fixedly passed through the back side of the shell and extends to the inside of the shell, the front side of the refrigeration pipe passes through the front end face of the inner side of the shell and extends to the front side of the shell, a solenoid valve is arranged on the inside of the refrigeration pipe, and by providing the cooling mechanism, the air can be cooled after dust removal and filtration, and the air on the right side of the partition plate can be cooled through the refrigerator and the refrigeration pipe.

[0012] Preferably, the right sides of the two air inlet frames are fixedly penetrated through the left side of the shell and extend to the inside of the shell, two filter blocks are fixedly provided on the inner sides of the two air inlet frames, two mounting plates are slidably provided on the front and rear end surfaces of the inner side of the shell, two needle plates are fixedly provided on the left sides of the two mounting plates, and the left end surfaces of the two needle plates extend to the inner sides of the two air inlet frames, and two connecting plates are fixedly provided on the adjacent sides of the two mounting plates, so that air can be filtered by the filter blocks, and the mesh holes of the filter blocks can be unblocked when the needle plates move back and forth left and right.

[0013] Preferably, the back side of the first motor is fixedly connected to the front side of the shell, the back side of the output end of the first motor passes through the front side of the shell and extends to the inside of the shell, an eccentric disk is fixedly arranged on the back side of the output end of the first motor, a control plate is rotatably arranged on the back side of the output end of the eccentric disk through a bearing seat, the left side of the control plate is hinged to the right side of the front connecting plate, a wedge-shaped groove is provided on the rear end face of the inner side of the shell, a wedge-shaped block is slidably arranged on the inner wall of the wedge-shaped groove, the front side of the wedge block is fixedly connected to the back side of the rear connecting plate, by turning on the first motor, the rotation of the output end of the first motor can drive the eccentric disk to rotate, when the eccentric disk rotates, the two mounting plates can be driven to move back and forth left and right through the control plate and the connecting plate, and the two mounting plates can drive the needle plate to move synchronously when moving.

[0014] Preferably, a water tank is fixedly provided on the bottom surface of the outer shell, a drainage pipe is fixedly penetrated through the bottom surface of the outer shell and extends to the interior of the outer shell, the front of the drainage pipe is fixedly penetrated through the back of the water tank and extends to the interior of the water tank, a water inlet pipe is fixedly penetrated through the right side of the water tank and extends to the interior of the water tank, a valve is provided inside the water inlet pipe, a worm sleeve is fixedly provided on the surface of the output end of the first motor, a worm wheel is fixedly provided on the surface of the reciprocating threaded rod, the tooth surface of the worm sleeve is meshed with the tooth surface of the worm wheel, and the reciprocating threaded rod can be driven to rotate synchronously through the worm wheel and the worm sleeve when the output end of the first motor rotates.

[0015] Preferably, a purifier is fixedly provided on the front side of the water tank, a connecting pipe is fixedly provided on the bottom surface of the water inlet end of the purifier, the top surface of the connecting pipe is fixedly penetrated through the bottom surface of the water tank and extends to the inside of the water tank, the top surface of the water outlet end of the purifier is fixedly connected to the bottom surface of the water inlet end of the water pump, a partition plate is vertically fixedly provided on the inner side surface of the outer shell, an air pump is fixedly provided on the left side of the partition plate, a through pipe is fixedly penetrated through the left side of the partition plate and extends to the right side of the partition plate, a second valve is provided on the inner side of the through pipe, and the water inside the water tank can be transported to the inside of the nozzle by turning on the water pump, and the water can be sprayed inside the outer shell through the nozzle.

[0016] Preferably, a second motor is fixedly provided on the right side of the shell, and the left side of the output end of the second motor penetrates through the right side of the shell and extends into the interior of the shell, a fan blade is fixedly provided on the left side of the output end of the second motor, an air outlet pipe is fixedly provided on the right side of the shell and extends into the interior of the shell, a drying device is provided on the right side of the air outlet pipe, a connecting plate is fixedly provided on the surface of the air outlet pipe, two bolts are provided on the left side of the connecting plate, and the right sides of the two bolts are threadedly penetrated through the left side of the connecting plate and the left side of the drying device in sequence and extend into the interior of the drying device, the air can be discharged through the air outlet pipe, and the air can be dried by passing through the drying device.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model provides a ventilation and heat dissipation device for a steam engine room, which has the following beneficial effects:

[0019] 1. By providing a dust removal mechanism, the air can be filtered when the air inside the steam engine room is ventilated and cooled, so that the dust inside the air after cooling can be reduced. During the filtering process, the filter block can be provided to filter larger impurities in the air, and the mesh of the filter block can be dredged by the reciprocating movement of the needle plate to avoid clogging after long-term use. The dust removal part can be provided to perform secondary treatment on the dust in the air, and the dust in the air can be dropped by spraying water into the shell, and the sprayed water can be recycled, so as to save more water resources.

[0020] 2. By setting up a cooling mechanism, the air can be cooled after dust removal and filtration. The air on the right side of the partition board can be cooled by the refrigerator and the refrigeration pipe. The cooled air can be extracted by rotating the fan blades, thereby achieving the purpose of cooling the air. The exhaust air can be dried by setting up a drying device to prevent the air from being too humid and causing rust on the internal parts of the steam engine room. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the left side of the utility model;

[0022] Figure 2 It is a three-dimensional schematic diagram of a top cross section of the utility model;

[0023] Figure 3 It is a partially cutaway three-dimensional schematic diagram of the back side of the utility model;

[0024] Figure 4 This is a bottom-up stereoscopic schematic diagram of the utility model;

[0025] Figure 5 For this utility model Figure 2 Enlarged three-dimensional schematic diagram of area A in the middle.

[0026] In the figure: 1 housing, 2 dust removal mechanism, 201 air inlet frame, 202 first motor, 203 purifier, 204 water pump, 205 hose, 206 needle plate, 207 mounting plate, 208 connecting plate, 209 control board, 210 nozzle, 211 partition plate, 212 air pump, 213 eccentric disk, 214 worm gear, 216 reciprocating threaded rod, 217 moving block, 218 worm gear sleeve, 219 filter block, 220 connecting pipe, 221 water storage tank, 222 drain pipe, 223 wedge block, 3 cooling mechanism, 301 drying device, 302 refrigerator, 303 air outlet pipe, 304 second motor, 305 fan blade, 306 refrigeration pipe, 4 support plate, 5 self-locking wheel. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] like Figure 1-Figure 5As shown, this embodiment proposes a housing 1 and two support plates 4 fixedly arranged on the bottom surface of the housing 1, two sets of self-locking wheels 5 are fixedly arranged on the bottom surfaces of the two support plates 4, and a dust removal mechanism 2 and a cooling mechanism 3 are arranged inside the housing 1;

[0030] The dust removal mechanism 2 is located on the left side of the cooling mechanism 3;

[0031] The dust removal mechanism 2 includes a filtering part and a dust removal part;

[0032] The filter unit includes two air inlet frames 201 and a first motor 202, and the dust removal unit includes a water pump 204 and a nozzle 210;

[0033] The inner bottom surface of the shell 1 is rotatably provided with a reciprocating threaded rod 216 through a bearing seat 1, and the top surface of the reciprocating threaded rod 216 is rotatably connected to the inner top surface of the shell 1 through a bearing seat 2. A moving block 217 is threadedly sleeved on the surface of the reciprocating threaded rod 216, and the top surface of the moving block 217 is fixedly connected to the bottom surface of the nozzle 210. A hose 205 is fixedly provided on the front side of the nozzle 210, and the front side of the hose 205 slides through the inner front end surface of the shell 1 and extends to the front of the shell 1. The front side of the shell 1 is fixedly connected to the back side of the water pump 204, and the top surface of the water outlet end of the water pump 204 is connected to the bottom surface of the hose 205. The right side of the two air inlet frames 201 is fixedly passed through the left side of the shell 1 and extends to the inside of the shell 1. The two air inlet frames 2 01, two filter blocks 219 are fixedly arranged on the inner side, two mounting plates 207 are slidingly arranged on the front and rear end surfaces of the inner side of the shell 1, two needle plates 206 are fixedly arranged on the left sides of the two mounting plates 207, and the left end surfaces of the two needle plates 206 extend to the inner sides of the two air inlet frames 201, respectively. Two connecting plates 208 are fixedly arranged on the adjacent sides of the two mounting plates 207, the back side of the first motor 202 is fixedly connected to the front side of the shell 1, the back side of the output end of the first motor 202 passes through the front side of the shell 1 and extends to the inside of the shell 1, an eccentric disk 213 is fixedly arranged on the back side of the output end of the first motor 202, and a control board 2 is arranged on the back side of the output end of the eccentric disk 213 through the bearing seat three rotation 09, the left side of the control panel 209 is hinged to the right side of the front connecting plate 208, a wedge-shaped groove is provided on the inner rear end face of the housing 1, a wedge-shaped block 223 is slidably provided on the inner wall of the wedge-shaped groove, the front side of the wedge-shaped block 223 is fixedly connected to the back side of the rear connecting plate 208, a water storage tank 221 is fixedly provided on the bottom surface of the housing 1, a drainage pipe 222 is fixedly provided on the bottom surface of the housing 1 and extends to the inside of the housing 1, the front side of the drainage pipe 222 is fixedly provided and extends through the back side of the water storage tank 221 to the inside of the water storage tank 221, a water inlet pipe is fixedly provided and extends to the inside of the water storage tank 221 on the right side of the water storage tank 221, a valve is provided inside the water inlet pipe, and a worm sleeve 21 is fixedly provided on the output end surface of the first motor 202 8. A worm gear 214 is fixedly sleeved on the surface of the reciprocating threaded rod 216, and the tooth surface of the worm sleeve 218 meshes with the tooth surface of the worm gear 214. A purifier 203 is fixedly arranged on the front of the water tank 221, and a connecting pipe 220 is fixedly arranged on the bottom surface of the water inlet end of the purifier 203. The top surface of the connecting pipe 220 is fixedly penetrated through the bottom surface of the water tank 221 and extends to the inside of the water tank 221. The top surface of the water outlet end of the purifier 203 is fixedly connected to the bottom surface of the water inlet end of the water pump 204. A partition plate 211 is vertically fixedly arranged on the inner side of the outer shell 1, and an air pump 212 is fixedly arranged on the left side of the partition plate 211. A through pipe is fixedly penetrated on the left side of the partition plate 211 and extends to the right side of the partition plate 211, and a second valve is arranged on the inner side of the through pipe.

[0034] In this embodiment, by providing a dust removal mechanism 2, the air can be filtered when the air inside the steam engine room is ventilated and cooled, so that the dust inside the air after cooling can be reduced. During the filtering process, the filter block 219 can be provided to filter larger impurities in the air, and the mesh of the filter block 219 can be unblocked by the reciprocating movement of the needle plate 206 to avoid clogging after long-term use. The dust removal part can be provided to perform secondary treatment on the dust in the air, and the dust in the air can be dropped by spraying water into the shell 1, and the sprayed water flow can be recycled, so as to save water resources.

[0035] Example 2

[0036] like Figure 1-Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, the present embodiment further proposes that the cooling mechanism 3 includes a refrigerator 302, the front side of the refrigerator 302 is fixedly connected to the back side of the shell 1, a cooling tube 306 is fixedly arranged on the bottom surface of the liquid outlet end of the refrigerator 302, the front side of the cooling tube 306 is fixedly penetrated through the back side of the shell 1 and extends to the inside of the shell 1, the front side of the cooling tube 306 penetrates through the inner front end surface of the shell 1 and extends to the front of the shell 1, a solenoid valve is arranged on the inside of the cooling tube 306, a second motor 304 is fixedly arranged on the right side of the shell 1, the left side of the output end of the second motor 304 penetrates through the right side of the shell 1 and extends to the inside of the shell 1, a fan blade 305 is fixedly arranged on the left side of the output end of the second motor 304, an air outlet pipe 303 is fixedly penetrated through the right side of the shell 1 and extends to the inside of the shell 1, a drying device 301 is arranged on the right side of the air outlet pipe 303, a connecting plate is fixedly sleeved on the surface of the air outlet pipe 303, two bolts are arranged on the left side of the connecting plate, and the right sides of the two bolts are threadedly penetrated through the left side of the connecting plate and the left side of the drying device 301 in sequence and extend to the inside of the drying device 301.

[0037] In this embodiment, a cooling mechanism 3 is provided to cool the air after dust removal and filtration. The air on the right side of the partition plate 211 can be cooled by the refrigerator 302 and the cooling pipe 306. The cooled air can be drawn out by the rotation of the fan blades 305, thereby achieving the purpose of cooling the air. The drying device 301 can be provided to dry the exhausted air to prevent the internal parts of the steam engine room from rusting due to excessive humidity.

[0038] When in use, the air pump 212 is turned on, and the air pump 212 draws the air inside the machine room to the left side of the partition plate 211, and the air can be filtered through the filter block 219. By turning on the first motor 202, the rotation of the output end of the first motor 202 can drive the eccentric disk 213 to rotate. When the eccentric disk 213 rotates, the two mounting plates 207 can be driven to move back and forth left and right through the control plate 209 and the connecting plate 208. When moving, the two mounting plates 207 can drive the needle plate 206 to move synchronously. When the needle plate 206 reciprocates left and right, the mesh of the filter block 219 can be dredged, and water is delivered to the inside of the water tank 221 through the water inlet pipe. By turning on the water pump 204, the water inside the water tank 221 can be delivered to the inside of the nozzle 210. Then, water can be sprayed inside the housing 1 through the nozzle 210, and the worm gear 214 and the worm sleeve 218 are connected. When the output end of the first motor 202 rotates, the reciprocating threaded rod 216 can be driven to rotate synchronously. When the reciprocating threaded rod 216 rotates, the nozzle 210 can be driven to move up and down through the moving block 217. The water after spraying will enter the water tank 221 through the drain pipe 222. The water inside the water tank 221 can be filtered through the purifier 203 so that it can be reused. After the air is dust-reduced, the second valve and the second motor 304 are opened. When the output end of the second motor 304 rotates, the fan blades 305 can be driven to rotate. When the fan blades 305 rotate, the air on the left side of the partition plate 211 can be drawn to the right side of the partition plate 211. The air can be cooled through the refrigeration pipe 306 and the refrigerator 302, the air can be discharged through the air outlet pipe 303, and the air can be dried through the drying device 301.

[0039] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A ventilation and heat dissipation device for a steam engine room, comprising a housing (1) and two support plates (4) fixedly arranged on the bottom surface of the housing (1), wherein two sets of self-locking wheels (5) are fixedly arranged on the bottom surfaces of the two support plates (4), respectively, and characterized in that: A dust removal mechanism (2) and a cooling mechanism (3) are provided inside the housing (1); The dust removal mechanism (2) is located on the left side of the cooling mechanism (3); The dust removal mechanism (2) comprises a filtering part and a dust removal part; The filter unit includes two air inlet frames (201) and a first motor (202), and the dust removal unit includes a water pump (204) and a nozzle (210); A reciprocating threaded rod (216) is rotatably provided on the inner bottom surface of the housing (1) through a first bearing seat, and a top surface of the reciprocating threaded rod (216) is rotatably connected to the inner top surface of the housing (1) through a second bearing seat. A moving block (217) is threadedly sleeved on the surface of the reciprocating threaded rod (216), and a top surface of the moving block (217) is fixedly connected to the bottom surface of the nozzle (210). A hose (205) is fixedly provided through the front surface of the nozzle (210), and the front surface of the hose (205) slides through the inner front end surface of the housing (1) and extends to the front of the housing (1). The front surface of the housing (1) is fixedly connected to the back surface of the water pump (204), and the top surface of the water outlet end of the water pump (204) is connected through the bottom surface of the hose (205).

2. A ventilation and heat dissipation device for a steam engine room according to claim 1, characterized in that: The cooling mechanism (3) comprises a refrigerator (302), the front side of the refrigerator (302) being fixedly connected to the back side of the outer shell (1), a refrigerator tube (306) being fixedly arranged on the bottom surface of the liquid outlet end of the refrigerator (302), the front side of the refrigerator tube (306) being fixedly passed through the back side of the outer shell (1) and extending to the inside of the outer shell (1), the front side of the refrigerator tube (306) being passed through the inner front end surface of the outer shell (1) and extending to the front side of the outer shell (1), and a solenoid valve being arranged on the inner side of the refrigerator tube (306).

3. A ventilation and heat dissipation device for a steam engine room according to claim 1, characterized in that: The right sides of the two air inlet frames (201) are fixedly passed through the left side of the shell (1) and extend to the inside of the shell (1); two filter blocks (219) are fixedly arranged on the inner side surfaces of the two air inlet frames (201); two mounting plates (207) are slidably arranged on the front and rear end surfaces of the inner side of the shell (1); two needle plates (206) are fixedly arranged on the left sides of the two mounting plates (207); the left end surfaces of the two needle plates (206) extend to the inside of the two air inlet frames (201); and two connecting plates (208) are fixedly arranged on the adjacent side surfaces of the two mounting plates (207).

4. A ventilation and heat dissipation device for a steam engine room according to claim 3, characterized in that: The back side of the first motor (202) is fixedly connected to the front side of the housing (1); the back side of the output end of the first motor (202) passes through the front side of the housing (1) and extends into the interior of the housing (1); an eccentric disk (213) is fixedly arranged on the back side of the output end of the first motor (202); a control plate (209) is rotatably arranged on the back side of the output end of the eccentric disk (213) through a bearing seat; the left side of the control plate (209) is hinged to the right side of the front connecting plate (208); a wedge-shaped groove is provided on the rear end face of the inner side of the housing (1); a wedge-shaped block (223) is slidably arranged on the inner wall of the wedge-shaped groove; the front side of the wedge block (223) is fixedly connected to the back side of the rear connecting plate (208).

5. A ventilation and heat dissipation device for a steam engine room according to claim 4, characterized in that: A water tank (221) is fixedly arranged on the bottom surface of the shell (1), a drainage pipe (222) is fixedly arranged through the bottom surface of the shell (1) and extends into the inside of the shell (1), the front of the drainage pipe (222) is fixedly arranged through the back of the water tank (221) and extends into the inside of the water tank (221), a water inlet pipe is fixedly arranged through the right side of the water tank (221) and extends into the inside of the water tank (221), a valve is arranged inside the water inlet pipe, a worm sleeve (218) is fixedly arranged on the surface of the output end of the first motor (202), a worm wheel (214) is fixedly arranged on the surface of the reciprocating threaded rod (216), and the tooth surface of the worm sleeve (218) is meshed with the tooth surface of the worm wheel (214).

6. A ventilation and heat dissipation device for a steam engine room according to claim 5, characterized in that: A purifier (203) is fixedly arranged on the front side of the water storage tank (221); a connecting pipe (220) is fixedly arranged on the bottom surface of the water inlet end of the purifier (203); the top surface of the connecting pipe (220) is fixedly penetrated through the bottom surface of the water storage tank (221) and extends into the interior of the water storage tank (221); the top surface of the water outlet end of the purifier (203) is fixedly connected to the bottom surface of the water inlet end of the water pump (204); a partition plate (211) is vertically fixedly arranged on the inner side surface of the housing (1); an air pump (212) is fixedly arranged on the left side surface of the partition plate (211); a through pipe is fixedly penetrated through the left side surface of the partition plate (211) and extends to the right side of the partition plate (211); a second valve is arranged on the inner side of the through pipe.

7. The ventilation and heat dissipation device for a steam engine room according to claim 2, characterized in that: A second motor (304) is fixedly arranged on the right side of the housing (1); the left side of the output end of the second motor (304) penetrates the right side of the housing (1) and extends into the interior of the housing (1); a fan blade (305) is fixedly arranged on the left side of the output end of the second motor (304); an air outlet pipe (303) is fixedly arranged on the right side of the housing (1) and extends into the interior of the housing (1); a drying device (301) is arranged on the right side of the air outlet pipe (303); a connecting plate is fixedly sleeved on the surface of the air outlet pipe (303); two bolts are arranged on the left side of the connecting plate; the right sides of the two bolts are threadedly penetrated through the left side of the connecting plate and the left side of the drying device (301) in sequence and extend into the interior of the drying device (301).

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