Protective device for water conservancy and hydropower equipment

Abstract

The utility model relates to the technical field of water conservancy equipment protection, in particular to a water conservancy and hydropower equipment protection device which comprises a box body, an air inlet pipe is fixed to the left side of the box body, an air outlet pipe is arranged at the bottom of the air inlet pipe, a front-back moving rod is fixed to the rear portion of the box body, and a left-right moving rod is arranged at the front end of the front-back moving rod. A vertical moving rod is arranged at the right end of the left-right moving rod, an air blowing pipe is arranged at the bottom of the vertical moving rod, a supporting block is fixed in the box body, a bottom clamping block is arranged on the outer side of the supporting block, a top clamping block is arranged at the top of the bottom clamping block, and the top of the supporting block is slidably connected with power equipment. A liquid nitrogen box is fixed to the left side in the box body through a fixing rod. Power equipment of different sizes can be clamped through cooperation of the bottom sliding rod and the bottom spring and cooperation of the top sliding rod and the top spring, meanwhile, the stability of the power equipment can be improved under the action of the bottom spring and the top spring, and therefore the clamping effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water conservancy equipment protection technical field, concretely is a kind of water conservancy and hydropower equipment protection device. BACKGROUND

[0002] Water conservancy and hydropower equipment is usually installed in river, lake and other natural environment, these environments are complex and changeable, including topography, geology, hydrological meteorological conditions and various factors, and it poses a serious challenge to the stable operation of equipment, so it is usually necessary to make corresponding protection.

[0003] However, the existing protection device is mostly manufactured in advance according to the size of power equipment, so that the application range of the protection device is low, and the existing protection device only reduces the temperature of power equipment by equipment ventilation, and the cooling effect of this way is poor, and for this purpose, the utility model designs a kind of water conservancy and hydropower equipment protection device to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a kind of water conservancy and hydropower equipment protection device, effectively solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of water conservancy and hydropower equipment protection device, including box, the box front end rotationally connected with door, the left side of the box is fixed with air inlet pipe, the air inlet pipe bottom is equipped with air outlet pipe with the box fixed connection, the rear part of the box is fixed with front and rear moving rod, the front and rear moving rod front end is fixed with locating block, the locating block right end is fixed with left and right moving rod, the left and right moving rod right end bottom is fixed with vertical moving rod, the vertical moving rod bottom right end is fixed with temperature sensor, the temperature sensor bottom is fixed with camera, the vertical moving rod bottom is also equipped with air blowing pipe, the air blowing pipe bottom is fixed with multiple air blowing heads, the box inside is fixed with support block, the support block outside is equipped with multiple bottom clamping blocks, the top of each bottom clamping block is equipped with top clamping block, the support block top is slidably connected with power equipment, the left side in the box is fixed with liquid nitrogen tank by fixed rod, the left side of the liquid nitrogen tank is fixed with liquid nitrogen output pipe, the rear part of the liquid nitrogen output pipe is fixed with liquid nitrogen circulation pipe, the air inlet pipe inside is equipped with exhaust fan, the right end of the air inlet pipe is fixed with the air blowing pipe by gas supply pipe, the box inside is also fixed with controller, the right side of the controller is equipped with power supply.

[0006] Preferably, the support block is externally provided with a plurality of bottom sliding rods, each of which is in sliding connection with the bottom clamping block on one side thereof, and each of the bottom sliding rods is externally provided with a bottom spring; each of the top clamping blocks is fixed with a group of top sliding rods on the top thereof, and each group of the top sliding rods is fixedly connected through a connecting plate.

[0007] Preferably, the inner side of the front end of the bottom sliding rod is fixed with a sliding block, and the inner sides of the remaining bottom sliding rods are fixedly connected with the support block; the inner side of the sliding block is in sliding connection with a sliding rod, and the outer side of the sliding rod is further provided with a spring; and each of the top clamping blocks is closely attached to the electric power equipment on the bottom thereof.

[0008] Preferably, the inner surface of the left side of the box body is fixed with a track, the track is in sliding connection with the positioning block, the bottom of the vertical moving rod is fixed with a bearing, the inner ring of the bearing is fixedly connected with the blowing pipe, the rear end of the bearing is provided with a reversing pinion fixedly connected with the blowing pipe, the reversing pinion is in meshing connection with a reversing main gear, the front end of the reversing main gear is rotatably connected with a reversing motor, and the reversing motor is fixedly connected with the vertical moving rod.

[0009] Preferably, the bottom of the track is provided with a pump body fixedly connected with the liquid nitrogen output pipe, the left side of the liquid nitrogen output pipe is provided with a liquid nitrogen output valve, the rear part of the liquid nitrogen output valve is provided with a liquid nitrogen circulating valve fixedly connected with the liquid nitrogen circulating pipe, the inner part of the air inlet pipe is further fixed with a suction fan motor rotatably connected with a suction fan, the right side of the suction fan motor is provided with a cooling pipe fixedly connected with the liquid nitrogen output pipe and the liquid nitrogen circulating pipe, and the right end of the air inlet pipe is further fixed with a filter plate.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] The bottom clamping block can be moved through the cooperation of the bottom sliding rod and the bottom spring, so that different sizes of electric power equipment can be clamped, the top clamping block can clamp the electric power equipment through the cooperation of the top sliding rod and the top spring, so that different sizes of electric power equipment can be adapted, the stability of the electric power equipment can be increased due to the action of the bottom spring and the top spring, so that the anti-shaking ability of the equipment is improved, the clamping effect is ensured, the use range of the equipment is improved, the front end of the bottom sliding rod can be rotated due to the action of the sliding rod and the spring, so that the staff can conveniently install the electric power equipment, and manpower is saved.

[0012] The liquid nitrogen in the liquid nitrogen tank can be delivered into the cooling pipe through the cooperation of the pump body and the liquid nitrogen output valve, so that the temperature of the gas in the air inlet pipe can be reduced, the cooling head can blow cold air, the purpose of cooling is achieved, the cooling effect is ensured, and the protection effect is ensured.

[0013] The utility model discloses a front and back movement pole, left and right movement pole, vertical movement pole cooperation can make the blowpipe reach the required position, and through the reversing motor can drive the reversing main gear rotation to can drive the reversing auxiliary gear rotation to can drive the blowpipe rotation to make the blowing head can blow in any position on the surface of electric power equipment to can cool down any position of electric power equipment to improve cooling efficiency, guarantee cooling accuracy simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, explain the utility model together with the embodiments of the utility model, and do not constitute the limit to the utility model.

[0015] In the drawings:

[0016] Figure 1 It is the whole schematic diagram of the utility model;

[0017] Figure 2 It is the left side schematic diagram of the utility model;

[0018] Figure 3 It is the inside schematic diagram of the utility box of the utility model;

[0019] Figure 4 It is the inside cross section schematic diagram of the utility box of the utility model;

[0020] Figure 5 It is the clamping mechanism schematic diagram of the utility model;

[0021] Figure 6 It is the blowpipe reversing schematic diagram of the utility model;

[0022] Figure 7 It is the sliding block enlarged schematic diagram of the utility model;

[0023] Figure 8 It is the liquid nitrogen tank schematic diagram of the utility model;

[0024] Figure 9 It is the inside schematic diagram of the air inlet pipe of the utility model.

[0025] In the figure: 1-box; 2-inlet pipe; 3-front and rear moving rod; 4-electric power equipment; 5-supporting block; 6-liquid nitrogen tank; 101-tank door; 102-outlet pipe; 103-controller; 104-power supply source; 201-filter plate; 202-gas feeding pipe; 203-bearing; 204-blowing pipe; 205-blowing head; 206-reversing auxiliary gear; 207-reversing main gear; 208-reversing motor; 209-exhaust fan; 210-exhaust motor; 301-track; 302-positioning block; 303-left and right moving rod; 304-vertical moving rod; 305-camera; 306-temperature sensor; 501-bottom clamping block; 502-top clamping block; 503-bottom sliding rod; 504-bottom spring; 505-top sliding rod; 506-top spring; 507-connecting plate; 508-sliding block; 509-sliding rod; 510-spring; 601-pump body; 602-liquid nitrogen output valve; 603-liquid nitrogen output pipe; 604-liquid nitrogen circulating pipe; 605-liquid nitrogen circulating valve; 606-cooling pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Embodiment one, by Figures 1-5 , Figures 8-9The utility model provides a box body 1, the box body 1 adopts alloy material to be made, the box body 1 is used for supporting whole equipment, the box body 1 front end rotatory connection has box door 101, the box door 101 can guarantee the sealing property of box body 1, the left side fixed of box body 1 has air inlet pipe 2, air inlet pipe 2 is used for providing required air for equipment, air inlet pipe 2 bottom is equipped with air outlet pipe 102 with box body 1 fixed connection, air outlet pipe 102 is used for discharging the air in box body 1 inside, to realize circulation, the rear part fixed of box body 1 has front and back moving rod 3, front and back moving rod 3 can stretch out and shrink, to the left and right moving rod 303 can be driven with the front and back movement of positioning block 302, the front end fixed of front and back moving rod 3 has positioning block 302, positioning block 302 adopts alloy material to be made, positioning block 302 is used for positioning to left and right moving rod 303, the right end fixed of positioning block 302 has left and right moving rod 303, left and right moving rod 303 can stretch out and shrink, to the vertical movement of bearing 203 can be driven with the moving rod 304, the right end bottom fixed of left and right moving rod 303 has vertical moving rod 304, vertical moving rod 304 can stretch out and shrink, to the up and down movement of bearing 203 can be driven with temperature sensor 306, the bottom right end fixed of vertical moving rod 304 has temperature sensor 306, temperature sensor 306 can monitor the temperature in box body 1, the bottom fixed of temperature sensor 306 has camera 305, camera 305 can monitor the position of blowing pipe 204, the bottom of vertical moving rod 304 still is equipped with blowing pipe 204, blowing pipe 204 adopts alloy material to be made, blowing pipe 204 is used for providing required gas for blowing head 205, blowing pipe 204 bottom is equipped with a plurality of blowing head 205, blowing head 205 is used for blowing, the inside fixed of box body 1 has support block 5, support block 5 adopts alloy material to be made, support block 5 is used for supporting electric power equipment 4, the outside of support block 5 is equipped with a plurality of bottom clamping block 501, bottom clamping block 501 adopts alloy material to be made, bottom clamping block 501 is used for clamping electric power equipment 4, the top of each bottom clamping block 501 is equipped with top clamping block 502, top clamping block 502 adopts alloy material to be made, top clamping block 502 is used for positioning electric power equipment 4, the top sliding connection of support block 5 has electric power equipment 4, the left side in box body 1 is fixed with liquid nitrogen tank 6 through fixed rod, liquid nitrogen tank 6 adopts alloy material to be made, liquid nitrogen tank 6 outside is made heat insulation treatment, the left side fixed of liquid nitrogen tank 6 has liquid nitrogen output pipe 603, liquid nitrogen output pipe 603 is for cooling pipe 606 delivery liquid nitrogen, the rear part fixed of liquid nitrogen output pipe 603 has liquid nitrogen circulation pipe 604, liquid nitrogen circulation pipe 604 is used for delivering the liquid nitrogen in cooling pipe 606 inside to the inside of liquid nitrogen tank 6, air inlet pipe 2 inside is equipped with exhaust fan 209,The right end of the air inlet pipe 2 is fixedly connected with the blowing pipe 204 through the air pipe 202, the air pipe 202 is telescopic, so that the blowing pipe 204 is convenient to move, the inside of the box body 1 is further fixed with the controller 103, the controller 103 is used for controlling the whole equipment, the right side of the controller 103 is provided with the power supply 104, and the power supply 104 provides the required energy for the whole equipment.

[0028] In the second embodiment, on the basis of the first embodiment, the air inlet pipe 2 is provided with a plurality of air inlet holes 201, and the air inlet pipe 2 is provided with a plurality of air inlet holes 201. Figures 6-7The support block 5 is provided with a plurality of bottom slide rods 503 outside, the bottom slide rods 503 are made of alloy material, the bottom slide rods 503 are used for positioning the bottom clamping blocks 501, each bottom slide rod 503 is slidably connected with the bottom clamping block 501 on one side thereof, and each bottom slide rod 503 is further provided with a bottom spring 504 outside, the bottom spring 504 is elastic, so that the bottom clamping block 501 is tightly attached to the power equipment 4, each bottom clamping block 501 is fixed with a group of top slide rods 505 on the top thereof, the top slide rods 505 are made of alloy material, the top slide rods 505 are used for positioning the top clamping blocks 502, each group of top slide rods 505 is fixedly connected through a connecting plate 507, the connecting plate 507 is made of alloy material, each top slide rod 505 is further provided with a top spring 506 outside, the top spring 506 is elastic, so that the top clamping block 502 is tightly attached to the power equipment 4, a sliding block 508 is fixedly connected to the inner side of the front end of the bottom slide rod 503, the sliding block 508 is made of alloy material, the sliding block 508 is used for positioning the front end of the bottom slide rod 503, the inner sides of the remaining bottom slide rods 503 are fixedly connected with the support block 5, a slide rod 509 is slidably connected inside the sliding block 508, the slide rod 509 is made of alloy material, the slide rod 509 is used for positioning the sliding block 508, the slide rod 509 is further provided with a spring 510 outside, the spring 510 is elastic, so that the front end of the bottom slide rod 503 is located in front of the support block 5 when the front end of the bottom slide rod 503 is not forced, each top clamping block 502 is tightly attached to the power equipment 4 on the bottom thereof, a track 301 is fixedly connected to the inner surface of the left side of the box body 1, the track 301 is made of alloy material, the track 301 is used for positioning the positioning block 302, the track 301 is slidably connected with the positioning block 302, a bearing 203 is fixedly connected to the bottom of the vertical moving rod 304, the bearing 203 is used for positioning the blowing pipe 204, the inner ring of the bearing 203 is fixedly connected with the blowing pipe 204, a reversing pinion 206 is arranged at the rear end of the bearing 203 and fixedly connected with the blowing pipe 204, the reversing pinion 206 can drive the blowing pipe 204 to rotate, the reversing pinion 206 is meshingly connected with a reversing main gear 207, the reversing main gear 207 can drive the reversing pinion 206 to rotate, a reversing motor 208 is rotatably connected to the front end of the reversing main gear 207, the reversing motor 208 can drive the reversing main gear 207 to rotate, the reversing motor 208 is fixedly connected with the vertical moving rod 304, a pump body 601 is arranged at the bottom of the track 301 and fixedly connected with a liquid nitrogen output pipe 603, a liquid nitrogen output valve 602 is arranged at the left side of the liquid nitrogen output pipe 603, the pump body 601 and the liquid nitrogen output valve 602 cooperate to pump the liquid nitrogen in the liquid nitrogen tank 6 to the inside of the cooling pipe 606,The rear of the liquid nitrogen output valve 602 is provided with a liquid nitrogen circulation valve 605 fixedly connected with the liquid nitrogen circulation pipe 604, the liquid nitrogen circulation valve 605 can control the liquid nitrogen to return to the inside of the liquid nitrogen tank 6, the inside of the air inlet pipe 2 is further fixedly provided with an exhaust fan 209 and an exhaust motor 210, the exhaust motor 210 can drive the exhaust fan 209 to rotate, the right side of the exhaust motor 210 is provided with a cooling pipe 606, the cooling pipe 606 is made of alloy material, the cooling pipe 606 is used for cooling the air in the air inlet pipe 2, the right side of the cooling pipe 606 is fixedly connected with the liquid nitrogen output pipe 603 and the liquid nitrogen circulation pipe 604, the right end of the air inlet pipe 2 is further fixedly provided with a filter plate 201, the filter plate 201 is used for filtering impurities in the air.

[0029] In use of the device, the worker installs the whole device to the required position, further the worker opens the box door 101, further the worker controls the slider 508 to rotate around the slide rod 509, so as to drive the front end bottom slide rod 503 to rotate, so as to make the front end bottom clamping block 501 open, so as to facilitate the installation of the power equipment 4, further the worker puts the power equipment 4 into the top of the supporting block 5, at this time the worker controls the front end bottom clamping block 501 to reset, at this time the plurality of bottom clamping blocks 501 can be moved under the action of the plurality of bottom slide rods 503 and the bottom springs 504, so as to clamp the power equipment 4, through the plurality of top slide rods 505 and the top springs 506, the plurality of top clamping blocks 502 can be tightly attached to the power equipment 4, so as to ensure the stability of the power equipment 4, and prevent the power equipment 4 from shaking, further the worker closes the box door 101, further the controller 103 controls the camera 305 and the temperature sensor 306 to work, so as to monitor the external temperature of the power equipment 4, at this time the controller 103 controls the front and rear moving rod 3 to extend and retract, so as to make the positioning block 302 move forward and backward, at the same time, the left and right moving rod 303 is controlled to extend and retract, so as to make the vertical moving rod 304 move left and right, further by controlling the vertical moving rod 304 to extend and retract, the bearing 203 can be driven to move up and down, further the controller 103 controls the reversing motor 208 to work, so as to drive the reversing main gear 207 to rotate, so as to drive the reversing secondary gear 206 to rotate, and then drive the blowing pipe 204 to rotate, so as to drive the blowing head 205 to reverse, so as to cool any position of the power equipment 4, when the temperature sensor 306 monitors that the surface temperature of the power equipment 4 is relatively high, the controller 103 controls the air suction motor 210 to work, so as to deliver the external air to the air supply pipe 202 through the air inlet pipe 2, and then to the blowing pipe 204, and then to be sprayed from the blowing head 205, so as to achieve the purpose of cooling, at the same time, the air in the box body 1 is output through the air outlet pipe 102, when the temperature sensor 306 monitors that the temperature of the power equipment 4 is still too high, the controller 103 controls the pump body 601, the liquid nitrogen output valve 602 and the liquid nitrogen circulation valve 605 to work, so as to make the liquid nitrogen in the liquid nitrogen tank 6 delivered to the inside of the liquid nitrogen tank 6, and then delivered to the inside of the liquid nitrogen tank 6 through the liquid nitrogen circulation pipe 604, so as to cool the gas in the air inlet pipe 2, and then cool the gas in the blowing pipe 204, so as to further reduce the temperature of the power equipment 4.

[0030] The working procedure of the utility model is: when using the device, the staff installs the whole device to the required position, further the staff opens the box door 101, further the staff controls the slider 508 rotates around the slide rod 509, thereby can drive the front end bottom slide rod 503 to rotate, thereby makes the front end bottom clamping block 501 open, thereby facilitates the installation of the power equipment 4, further the staff puts the power equipment 4 into the support block 5 top, at this time the staff controls the front end bottom clamping block 501 reset, at this time due to the action of multiple bottom slide rods 503 and bottom springs 504 can make multiple bottom clamping blocks 501 move, thereby can clamp the power equipment 4, through the staff through multiple top slide rods 505 and top springs 506 can make multiple top clamping blocks 502 and the power equipment 4 close, thereby guarantee the stability of the power equipment 4, can prevent the power equipment 4 from shaking at the same time, further the staff closes the box door 101, further the controller 103 controls the camera 305 and the temperature sensor 306 work, thereby can monitor the temperature outside the power equipment 4, at this time the controller 103 controls the front and rear moving rod 3 telescopic can make the positioning block 302 move forward and backward, simultaneously control the left and right moving rod 303 telescopic, can make the vertical moving rod 304 move left and right, further through the control vertical moving rod 304 telescopic can drive the bearing 203 up and down, further the controller 103 controls the reversing motor 208 work can drive the reversing main gear 207 rotation, thereby drive the reversing auxiliary gear 206 rotation, further drive the blowing pipe 204 rotation, thereby drive the blowing head 205 reversing, thereby can be the power equipment 4 any position cooling, when the temperature sensor 306 monitors the surface temperature of the power equipment 4 is higher, the controller 103 controls the air extraction motor 210 work, thereby the external air is transported to the air supply pipe 202 through the air inlet pipe 2, further to the blowing pipe 204, further from the blowing head 205 spouts, thereby reach the purpose of cooling, simultaneously the air in the box 1 is output through the air outlet pipe 102, when the temperature sensor 306 monitors the temperature of the power equipment 4 is still too high, the controller 103 controls the pump body 601, liquid nitrogen output valve 602 and liquid nitrogen circulation valve 605 work, thereby makes the liquid nitrogen in the liquid nitrogen tank 6 inside is transported to the liquid nitrogen tank 6 inside, further through the liquid nitrogen circulation pipe 604 is transported to the liquid nitrogen tank 6 inside, thereby the gas in the air inlet pipe 2 cooling, thereby the gas in the blowing pipe 204 cooling, thereby further reduce the temperature of the power equipment 4.

[0031] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0032] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A device for protecting hydroelectric equipment, characterized in that: The utility model provides a kind of electric power equipment temperature control device, including box (1), the box (1) front end rotatory connection has box door (101), the box (1) left side is fixed with air inlet pipe (2), the air inlet pipe (2) bottom is equipped with air outlet pipe (102) with the box (1) fixed connection, the box (1) rear is fixed with front and rear moving rod (3), the front and rear moving rod (3) front end is fixed with locating block (302), the locating block (302) right end is fixed with left and right moving rod (303), the left and right moving rod (303) right end bottom is fixed with vertical moving rod (304), the vertical moving rod (304) bottom right end is fixed with temperature sensor (306), the temperature sensor (306) bottom is fixed with camera (305), the vertical moving rod (304) bottom is also equipped with blowing pipe (204), the blowing pipe (204) bottom is fixed with multiple blowing heads (205), the box (1) inside is fixed with support block (5), the support block (5) outside is equipped with multiple bottom clamping blocks (501), each bottom clamping block (501) top is equipped with top clamping block (502), the support block (5) top is slidably connected with electric power equipment (4), the box (1) inside left side is fixed with liquid nitrogen tank (6) by fixed rod, the liquid nitrogen tank (6) left side is fixed with liquid nitrogen output pipe (603), the liquid nitrogen output pipe (603) rear is fixed with liquid nitrogen circulation pipe (604), the air inlet pipe (2) inside is equipped with exhaust fan (209), the air inlet pipe (2) right end is fixed with blowing pipe (204) by air supply pipe (202), the box (1) inside is also fixed with controller (103), the controller (103) right side is equipped with power supply (104).

2. The device according to claim 1, characterized in that: The support block (5) outside is equipped with multiple bottom sliding rods (503), each bottom sliding rod (503) is slidably connected with the bottom clamping block (501) on its side, each bottom sliding rod (503) is further equipped with bottom spring (504) outside, each bottom clamping block (501) top is fixed with a group of top sliding rods (505), each group of top sliding rods (505) is fixedly connected by connecting plate (507), each top sliding rod (505) is further equipped with top spring (506) outside.

3. The device according to claim 2, characterized in that: Front bottom sliding rod (503) inboard is fixed with sliding block (508), the rest bottom sliding rod (503) inboard is fixed with support block (5), the sliding block (508) is slidably connected with sliding rod (509) inside, the sliding rod (509) is further equipped with spring (510) outside, each top clamping block (502) is closely attached with electric power equipment (4) on its bottom.

4. The device according to claim 1, characterized in that: The box (1) left side inner surface is fixed with track (301), track (301) and positioning block (302) sliding connection, vertical movement rod (304) bottom is fixed with bearing (203), bearing (203) inner ring and blow pipe (204) fixed connection, bearing (203) rear end is equipped with reversing gear (206) and blow pipe (204) fixed connection, reversing gear (206) meshing connection has reversing main gear (207), reversing main gear (207) front end rotationally connected with reversing motor (208), reversing motor (208) and vertical movement rod (304) fixed connection.

5. The device according to claim 4, characterized in that: The track (301) bottom is equipped with pump body (601) and the liquid nitrogen output pipe (603) fixed connection, the liquid nitrogen output pipe (603) left side is equipped with liquid nitrogen output valve (602), the liquid nitrogen output valve (602) rear portion is equipped with liquid nitrogen circulation valve (605) and the liquid nitrogen circulation pipe (604) fixed connection, the air inlet pipe (2) inside is still fixed with exhaust fan motor (210) and the exhaust fan (209) rotationally connected, the exhaust fan motor (210) right side is equipped with cooling pipe (606), the cooling pipe (606) right side and the liquid nitrogen output pipe (603) and the liquid nitrogen circulation pipe (604) fixed connection, the air inlet pipe (2) right end is still fixed with filter plate (201).

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