CN113983747A

CN113983747A - Multi-temperature-zone refrigerated transport equipment capable of automatically preparing cold storage agent

Info

Publication number: CN113983747A
Application number: CN202111271522.1A
Authority: CN
Inventors: 王达; 杨相政; 徐双喜; 贾连文; 连欢
Original assignee: JINAN INSTITUTE OF FRUIT PRODUCTS CHINA COOP
Current assignee: JINAN INSTITUTE OF FRUIT PRODUCTS CHINA COOP
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-01-28
Anticipated expiration: 2041-10-29
Also published as: CN113983747B

Abstract

The invention discloses multi-temperature-zone refrigerated transport equipment capable of automatically preparing a coolant, and relates to the technical field of cold-chain logistics transport equipment. The equipment comprises a heat insulation box body, wherein a partition panel is arranged in the heat insulation box body, the partition panel divides the inner space of the heat insulation box body into a plurality of cold storage rooms, and a temperature control unit is arranged in each cold storage room. The temperature control unit comprises a liquid collecting box, a radiation pipeline and a radiation refrigeration shell made of heat conducting materials, the inner space of the liquid collecting box is divided into an upper part and a lower part by a partition plate, cold accumulation ice blocks are arranged in the upper space of the liquid collecting box, and liquid leakage holes are formed in the partition plate. The radiation pipeline include feed pipe, return liquid pipe, radiation pipe network and with return the spraying that the liquid pipe is linked together be responsible for, just the spraying be responsible for and be located the top of collecting tank, the feed pipe on be provided with the circulating pump. The equipment adopts a radiation heat exchange mode, has small dry consumption and good stability, and does not have the problem of crystal precipitation.

Description

Multi-temperature-zone refrigerated transport equipment capable of automatically preparing cold storage agent

Technical Field

The invention relates to the technical field of cold-chain logistics transportation equipment, in particular to multi-temperature-zone refrigeration transportation equipment capable of automatically preparing a coolant.

Background

The cold accumulation insulation can is a high-efficiency green logistics technology developed from developed countries in the beginning of the 80 th 20 th century. The advantages are that: the method has the advantages of no need of mechanical refrigeration, repeated utilization, energy conservation, environmental protection, realization of mixed loading and transportation of normal-temperature, frozen and refrigerated goods on the same vehicle, and full utilization of the freight transportation capability in the same direction.

Along with the rapid development of the cold chain logistics industry, the multi-temperature-zone refrigerated transport equipment gradually becomes a necessary device for simultaneously transporting goods of different types and different storage temperatures, firstly, the existing multi-temperature-zone transport equipment realizes different temperature control through a refrigeration system, the indoor tail end adopts an air cooler form for cooling, a fan blows cold air on the evaporator side to a cold storage zone and a fresh-keeping zone, a low-temperature environment is maintained, and the requirement on the air speed of an air outlet is overlarge, so that the problems of large energy consumption, high weight loss rate of refrigerated goods, large indoor temperature fluctuation and the like exist. Secondly, through cold plate type cold accumulation and heat preservation transportation, the cold accumulation agent in the cold plate of the existing multi-temperature area has poor stability and the problem of crystal precipitation, and the phase change point of the cold accumulation agent after crystal precipitation changes due to the change of concentration, so that the cold accumulation plate needs to be replaced regularly.

Disclosure of Invention

Aiming at the problems, the invention provides multi-temperature-zone refrigerated transport equipment capable of automatically preparing a coolant, which adopts heat conduction and radiation heat exchange modes compared with the traditional transport equipment utilizing a refrigeration system, and has the advantages of uniform temperature distribution, low dry consumption and low energy consumption; compared with traditional cold plate type transportation equipment, the equipment has the advantages of good stability, no problem of crystal precipitation, no need of regularly replacing cold storage ice blocks and reduced use cost.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a multi-temperature-zone refrigerated transport device capable of automatically preparing a cold storage agent comprises a heat insulation box body, wherein a partition plate is arranged in the heat insulation box body, the partition plate divides the inner space of the heat insulation box body into a plurality of refrigerated rooms, and a temperature control unit is arranged in each refrigerated room;

the temperature control unit comprises a liquid collecting box, a radiation pipeline and a radiation refrigeration shell made of heat conducting materials, the inner space of the liquid collecting box is divided into an upper part and a lower part by a partition plate, a cold accumulation ice block is arranged in the upper space of the liquid collecting box, and a liquid leakage hole is formed in the partition plate;

the radiation pipeline comprises a liquid supply pipe, a liquid return pipe and a spray main pipe communicated with the liquid return pipe, the spray main pipe is positioned above the liquid collection tank, the liquid supply pipe is communicated with the lower space of the liquid collection tank, a circulating pump is arranged on the liquid supply pipe, a radiation pipe network is laid outside the radiation refrigeration shell, the inlet of the radiation pipe network is communicated with the liquid supply pipe, and the outlet of the radiation pipe network is communicated with the liquid return pipe;

and a stirring device is arranged in the liquid collecting tank.

Furthermore, a recessed part recessed towards the front side is arranged on the rear side surface of the radiation refrigeration shell, and the liquid collecting box is arranged in the recessed part.

Further, the liquid feed pipe including being located horizontal part on the side of radiation refrigeration casing with be located the vertical portion of radiation refrigeration casing rear side, the left and right both sides of radiation refrigeration casing all are provided with back the liquid pipe, back the liquid pipe including the portion of converging, the rear end of the portion of converging is provided with the first connecting portion that extend to the inboard, the inner of first connecting portion is continuous with the main pipe that sprays through the second connecting portion, the radiation pipe network including being located the many radiant tubes of the left and right both sides of liquid feed pipe.

Further, the confluence part and the first connecting part of the liquid return pipe are obliquely arranged.

Furthermore, a groove matched with a part of radiation pipelines attached to the radiation refrigeration shell is formed in the outer side face of the radiation refrigeration shell, and heat conduction glue is smeared on the inner side face of the groove.

Further, the liquid collecting box in be provided with agitating unit, the bottom plate of liquid collecting box on be provided with an isolation section of thick bamboo, just keep apart a section of thick bamboo highly be higher than the degree of depth of coolant in the liquid collecting box, agitating unit include the stirring frame, the stirring frame including be located keep apart a section of thick bamboo in the (mixing) shaft, the upper end of (mixing) shaft with the baffle rotate to be connected, the (mixing) shaft on be located baffle and isolation section of thick bamboo between be provided with a plurality of connecting rods that are radial evenly arranged along the circumferencial direction, the connecting rod on be located keep apart a section of thick bamboo's outside is provided with the puddler, the liquid collecting box on be provided with and be used for the drive (mixing) shaft pivoted driving motor.

Furthermore, an installation plate is fixedly arranged in the isolation cylinder, the lower end of the stirring shaft is rotatably connected with the installation plate, the lower end of the stirring shaft penetrates through a bottom plate of the liquid collecting box and extends to the lower part of the liquid collecting box, and the lower end of the stirring shaft is connected with a power output shaft of the driving motor through a transmission mechanism.

Furthermore, a worm wheel is fixedly arranged at the lower end of the stirring shaft, a driving shaft is rotatably arranged on the bottom surface of the liquid collecting tank, a worm matched with the worm wheel is fixedly arranged on the driving shaft, and a power output shaft of the driving motor is connected with the driving shaft through a transmission mechanism.

Furthermore, a flow blocking cylinder which is coaxial with the stirring shaft is arranged on the upper side surface of the partition plate, and a sealing cover is arranged on the flow blocking cylinder.

Further, be provided with the splashproof section of thick bamboo on the downside of baffle, the stirring frame be located the splashproof section of thick bamboo in, the weeping hole all set up in the outside of splashproof section of thick bamboo.

The invention has the beneficial effects that:

1. compared with the traditional cold accumulation refrigerated truck, the cold accumulation agent which circularly flows exists in the equipment, so that new cold accumulation ice blocks can be prepared at the nodes of logistics transportation through the ice machines at the nodes, cold sources can be continuously supplemented, and the transportation endurance capacity is increased.

2. Compared with a mechanical refrigerator car, the refrigeration unit is omitted, the whole weight is lighter, the energy consumption is lower, meanwhile, the risk of leakage of a refrigerant is avoided, and the refrigerator car is more environment-friendly and safer.

3. The equipment has a plurality of subarea spaces, each subarea works independently, and the corresponding temperature can be reached only by replacing the corresponding coolant.

4. This equipment can reach the accurate control of temperature through opening of controlling circulating water pump and stopping.

5. The heat exchange mode of the equipment mainly adopts heat conduction and radiation heat exchange, the temperature distribution is uniform, the dry loss is small, the cold storage agent is not in direct contact with food, and the equipment is safe and sanitary.

6. Through set up agitating unit in the header tank, can make the concentration of coolant more even stable, avoid the concentration inequality to cause the crystal to wash out to influence the phase transition point of coolant, need not regularly change the coolant, reduce use cost.

7. In the stirring device for stirring the cold storage agent in the equipment, only the stirring rod is extended into the cold storage agent, so that the stirring device is prevented from being corroded by the cold storage agent, and the service life is prolonged.

8. The device can independently prepare the coolant without additionally searching a container to prepare the coolant, and is more convenient to use.

Drawings

FIG. 1 is a schematic perspective view of the transportation device;

FIG. 2 is an exploded view of the present transport apparatus;

FIG. 3 is a schematic perspective view of a temperature control unit;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is a schematic view of the internal structure of the temperature control unit;

FIG. 6 is an enlarged schematic view of portion B of FIG. 5;

FIG. 7 is a right side view of the temperature control unit;

FIG. 8 is a schematic perspective view of a radiation-cooled enclosure;

FIG. 9 is a perspective view of a radiation tunnel;

FIG. 10 is an enlarged view of the portion C of FIG. 9;

FIG. 11 is a schematic perspective view of a heat exchange member;

FIG. 12 is a rear view of the heat exchange member;

FIG. 13 is a sectional view A-A of FIG. 12;

FIG. 14 is an exploded view of the heat exchange section;

FIG. 15 is a cross-sectional view of the header tank;

FIG. 16 is a perspective view of the separator;

fig. 17 is a schematic perspective view of the stirring rack.

In the figure: 11-a heat preservation box body, 12-a partition plate, 13-a closed door,

2-a temperature control unit for controlling the temperature of the sample,

21-radiation-cooled housing, 211-recess, 212-first recess, 213-second recess, 214-third recess, 215-fourth recess,

221-a liquid collecting box, 2211-a liquid discharge pipe, 2212-an isolating cylinder, 2213-a connecting boss, 2214-an upper end plate, 222-a partition plate, 2221-a liquid leakage hole, 2222-a flow blocking cylinder, 2223-a splash-proof cylinder, 2224-a positioning angle plate, 223-a cold accumulation ice block, 2231-a positioning hole, 224-a sealing cover,

231-liquid supply pipe, 232-liquid return pipe, 233-main spray pipe, 234-radiant pipe, 235-branch spray pipe,

24-a nozzle, which is a spray nozzle,

25-a circulating pump, wherein the circulating pump is arranged in the shell,

26-a first control valve, which is,

27-a second control valve for controlling the flow of air,

281-stirring frame, 2811-stirring shaft, 2812-connecting rod, 2813-stirring rod, 2814-thrust plate, 282-mounting plate, 283-driving motor, 2841-worm wheel, 2842-driving shaft and 2843-worm.

Detailed Description

For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, and the up-down direction is taken as a vertical direction.

As shown in fig. 1 and 2, the multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant comprises an external thermal insulation maintenance structure, wherein the external thermal insulation maintenance structure comprises a thermal insulation box body 11 with an opening facing to the front side, a plurality of partition plates 12 are arranged in the thermal insulation box body 11, and the partition plates 12 divide the internal space of the thermal insulation box body 11 into refrigerated rooms with a plurality of openings facing to the front side. And a closing door 13 for closing the refrigerating room is arranged at the opening position of the front side of each refrigerating room. Preferably, the door and the partition panel 12 are both filled with a thermal insulation material, and as a specific implementation manner, the thermal insulation material in this embodiment is made of polyurethane to enhance thermal insulation.

And a temperature control unit 2 is arranged in each refrigerating room.

As shown in fig. 3, 5 and 8, the temperature control unit 2 includes a radiation refrigeration housing 21 made of a heat conductive material, and the front side of the radiation refrigeration housing 21 is open. As a specific embodiment, the radiation refrigeration casing 21 in the embodiment is made of aluminum alloy.

The rear side of the radiation refrigeration shell 21 is provided with a heat exchange component. The heat exchange component comprises a liquid collecting tank 221 with an opening at the upper end, a partition plate 222 is arranged in the liquid collecting tank 221, and the partition plate 222 divides the inner space of the liquid collecting tank 221 into an upper part and a lower part. The upper space of the liquid collecting tank 221 is provided with a cold storage ice block 223, and the partition 222 is provided with a liquid leakage hole 2221.

Further, in order to reduce the volume of the entire apparatus and increase the effective use space, as shown in fig. 8, a recess 211 recessed to the front side is provided on the rear side surface of the radiation cooling housing 21, and the header tank 221 is provided in the recess 211. Preferably, the rear side of the header tank 221 is flush with the rear side of the radiation cooling case 21. Preferably, the bottom surface of the recess 211 is flush with the bottom surface of the radiation cooling housing 21.

A radiant tube 234 is arranged between the heat exchange component and the radiation refrigeration shell 21. The radiant tube 234 includes a liquid supply tube 231, a liquid return tube 232 and a main spray tube 233 communicated with the liquid return tube 232, the main spray tube 233 is located above the liquid collecting tank 221, and the main spray tube 233 is provided with a plurality of nozzles 24. The liquid supply pipe 231 is communicated with the lower space of the liquid collecting tank 221, and the liquid supply pipe 231 is provided with a circulation pump 25 for pumping the coolant in the liquid collecting tank 221 into the liquid supply pipe 231. A radiant tube 234 net is laid outside the radiation refrigeration shell 21, and the radiant tube 234 net is attached to the radiation refrigeration shell 21. The inlet of the network of radiant tubes 234 is in communication with the liquid supply tube 231, and the other end of the network of radiant tubes 234 is in communication with the liquid return tube 232.

As a specific embodiment, as shown in fig. 3 and 9, the liquid supply pipe 231 according to the present embodiment includes a horizontal portion located right above the radiation cooling housing 21 and extending in the front-rear direction. The rear end of the horizontal part is provided with a vertical part, the upper end of the vertical part is communicated with the horizontal part, the lower end of the vertical part is connected with a liquid outlet of a circulating pump 25, and a liquid inlet of the circulating pump 25 is communicated with the lower space of the liquid collecting tank 221. Preferably, as shown in fig. 6, the circulation pump 25 in this embodiment is a submerged centrifugal pump, and a liquid inlet of the circulation pump 25 is inserted into the liquid collecting tank 221. Liquid return pipes 232 are arranged on the left side and the right side of the radiation refrigeration shell 21. The liquid return pipe 232 includes the portion of converging, the rear end of the portion of converging is provided with the first connecting portion that extends to the inboard (use the relative one side of two liquid return pipes 232 to be inboard), just the free end of first connecting portion extend to the depressed part 211 of radiation refrigeration casing 21 in, the free end of first connecting portion is provided with the second connecting portion that extends to the front side, the front end of second connecting portion with be located spray in the depressed part 211 of radiation refrigeration casing 21 and be responsible for 233 and link to each other. The radiation pipe network includes a plurality of radiation pipes 234 respectively disposed at left and right sides of the liquid supply pipe 231, and the plurality of radiation pipes 234 located at the same side are uniformly arranged along the front-rear direction. The radiation pipe 234 includes a horizontal portion and a vertical portion, the horizontal portion of the radiation pipe 234 is communicated with the liquid supply pipe 231, and the vertical portion of the radiation pipe 234 is communicated with the liquid return pipe 232.

Before transportation, a corresponding cold accumulation pack is selected according to the required refrigeration temperature, the cold accumulation pack is poured into the liquid collecting box, and then a certain amount of water is added. And starting the stirring device until the substances in the cold storage bag are completely dissolved to obtain the finally required cold storage agent. And then part of the cold storage agent is taken to be made into cold storage ice blocks through an ice maker.

The cold accumulation package comprises a 0-DEG C cold accumulation package, a-8-DEG C cold accumulation package, a-10-DEG C cold accumulation package and a-20-DEG C cold accumulation package. Wherein:

0 ℃ cold storage pack: 97g of water, 2.1 to 2.3g of sodium chloride and 0.7 to 0.9g of borax.

-8 ℃ cold storage pack: 83g of water, 5-7g of diatomite and 10-12g of potassium chloride.

-10 ℃ cold storage pack: is prepared from 80g of water and 18-20g of sodium chloride.

The cold storage bag at the temperature of minus 20 ℃ comprises 75g of water, 10-12g of potassium nitrate and 13-15g of sodium formate dihydrate.

In the transportation process, the cold accumulation ice blocks 223 are heated and melted, the melted liquid flows into the lower space of the liquid collecting tank 221 under the action of gravity, the liquid cold accumulation agent in the liquid collecting tank 221 enters the radiation pipe 234 through the liquid supply pipe 231 under the action of the circulating pump 25, then enters the liquid return pipe 232 through the radiation pipe 234, further enters the spraying main pipe 233, is sprayed on the cold accumulation ice blocks 223 through the nozzles 24, and exchanges heat with the cold accumulation ice blocks 223 with lower temperature. The liquid coolant after heat exchange and temperature reduction flows into the lower space of the liquid collecting tank 221 through the liquid leakage hole 2221, and one cycle is completed. In the circulation process of the liquid coolant, the cold energy of the liquid coolant is transferred to the radiation refrigeration shell 21 through the radiation pipe 234, the liquid supply pipe 231 and the liquid return pipe 232, and then the transport goods in the liquid coolant are subjected to radiation refrigeration. In the process, the system can control the on and off of the circulating pump 25 according to the temperature in the radiation refrigeration shell 21 fed back by the temperature sensor, so that the space temperature is maintained in a certain range.

This has the advantage that when passing through the logistics node, the coolant in the header tank 221 can be taken out to be made into cold storage ice blocks 223 by the ice maker at the logistics node, and placed on the partition 222 again to replace the cold storage ice blocks 223 that have melted, thereby increasing the endurance.

For the above reasons, in order to facilitate connection of the ice maker, as shown in fig. 4, the liquid discharge pipe 2211 communicating with the lower space of the liquid collection tank 221 is provided on the liquid collection tank 221, and the first control valve 26 is provided on the liquid discharge pipe 2211. Correspondingly, an avoiding opening (not shown in the figure) corresponding to the liquid discharge pipe 2211 is arranged on the rear side surface of the heat preservation box body 11, and a door (not shown in the figure) is arranged on the avoiding opening.

Further, as shown in fig. 4, a second control valve 27 is provided on the vertical portion of the supply pipe 231.

Further, as shown in fig. 7, the merging portion of the liquid return pipe 232 is inclined so as to be high in front and low in rear. Preferably, the inclination angle of the confluence part of the liquid return pipe 232 is 2-3 °. The first connection portion of the liquid return pipe 232 is disposed obliquely in an outer-high and inner-low manner. Preferably, the first connection portion of the liquid return pipe 232 is inclined at an angle of 20-35 °.

Further, in order to increase the heat exchange area and improve the heat exchange efficiency, a groove matched with a part of the radiation pipe 234 attached to the radiation refrigeration shell 21 is formed on the outer side surface of the radiation refrigeration shell 21. As a specific embodiment, as shown in fig. 8, the grooves in this embodiment include a first groove 212, a second groove 213, a third groove 214 and a fourth groove 215 disposed on the outer side surface of the radiation refrigeration shell 21, wherein the first groove 212 is matched with the horizontal portion of the liquid supply pipe 231, the second groove 213 is matched with the radiation pipe 234, the third groove 214 is matched with the confluence portion of the liquid return pipe 232, and the fourth groove 215 is matched with the first connection portion of the liquid return pipe 232.

Further, the inner side surface of the groove is coated with heat-conducting glue, so that the gap between the groove and the radiation pipe 234 attached to the radiation refrigeration shell 21 is filled with the heat-conducting glue, the contact area is further increased, and the heat-conducting efficiency is ensured.

Further, as shown in fig. 10, a plurality of spray branch pipes 235 are respectively disposed on the front and rear sides of the spray main pipe 233, and the spray nozzles 24 are disposed on the spray branch pipes 235.

Furthermore, in order to avoid crystal precipitation of the coolant and influence on the concentration of the coolant, a stirring device is arranged in the liquid collecting tank 221.

As shown in fig. 14 and 15, a plurality of isolation cylinders 2212 extending upward in the vertical direction are disposed on the bottom plate of the header tank 221, and the height of the isolation cylinders 2212 is higher than the depth of the coolant in the header tank 221. As a specific embodiment, in this embodiment, two separation cylinders 2212 are disposed on the bottom plate of the liquid collection tank 221, and the two separation cylinders 2212 are arranged in a row in the left-right direction.

The stirring device comprises two stirring frames 281 which are in one-to-one correspondence with the separation cylinders 2212. The stirring frame 281 comprises a stirring shaft 2811 positioned in the insulating cylinder 2212, the upper end of the stirring shaft 2811 is rotatably connected with the partition 222 through a bearing assembly, and the lower end of the stirring shaft 2811 is rotatably connected with the insulating cylinder 2212 through a bearing assembly. A plurality of connecting rods 2812 are arranged on the stirring shaft 2811 between the partition 222 and the separation cylinder 2212, and the connecting rods 2812 are uniformly arranged in a radial shape along the circumferential direction. The hanging end of the connecting rod 2812 is provided with a stirring rod 2813 extending downwards perpendicular to the connecting rod 2812, and the stirring rod 2813 is located outside the separation cylinder 2212.

As a specific embodiment, as shown in fig. 13, 14 and 15, an installation plate 282 is disposed in the isolation cylinder 2212, and the installation plate 282 is fixedly connected to the isolation cylinder 2212 by screws. The lower end of the stirring shaft 2811 is rotatably connected with the mounting plate 282 through a bearing assembly. Preferably, a connecting boss 2213 is provided on an inner side surface of the isolation cylinder 2212, and the mounting plate 282 is fixedly connected to the connecting boss 2213 by a screw.

The liquid collecting tank 221 is provided with a driving motor 283 for driving the stirring shaft 2811 to rotate.

As a specific implementation manner, in this embodiment, the lower end of the stirring shaft 2811 passes through the bottom plate of the liquid collection tank 221 and extends to the lower side of the liquid collection tank 221, a worm gear 2841 is fixedly disposed at the lower end of the stirring shaft 2811, and an avoiding hole for accommodating the stirring shaft 2811 is disposed on the bottom plate of the liquid collection tank 221. A driving shaft 2842 is arranged on the bottom surface of the liquid collecting tank 221, two ends of the driving shaft 2842 are rotatably connected with the liquid collecting tank 221 through bearing assemblies, and a worm 2843 matched with the worm wheel 2841 is fixedly arranged on the driving shaft 2842. The driving motor 283 is fixedly arranged on the rear side surface of the liquid collecting tank 221, and a power output shaft of the driving motor 283 is connected with the driving shaft 2842 through a transmission mechanism. Preferably, the transmission mechanism adopts synchronous belt transmission.

Further, in order to improve the stirring effect, as shown in fig. 17, a flow pushing plate 2814 extending outward in the radial direction is provided on the stirring rod 2813.

Further, an upper end plate 2214 is disposed at the upper end of the isolation cylinder 2212, and a through hole for receiving the stirring shaft 2811 is disposed in the upper end plate 2214.

Further, as shown in fig. 13 and 14, a choke cylinder 2222 coaxially disposed with the agitating shaft 2811 is disposed on an upper side surface of the partition 222, a sealing cover 224 is disposed on the choke cylinder 2222, and the sealing cover 224 is hermetically connected with the choke cylinder 2222 by a threaded connection. The design has the advantages that on one hand, the rotary connection part of the stirring shaft 2811 can be prevented from entering the coolant, so that corrosion is caused, and the service life is influenced; on the other hand, the leakage caused by the sprayed coolant flowing down along the stirring shaft 2811 can be avoided, and the loss of the coolant is caused.

Further, as shown in fig. 14 and 16, the lower side surface of the partition 222 is provided with splash guards 2223 extending downward in the vertical direction, the number of the splash guards 2223 is the same as that of the mixing racks 281, and the positions of the splash guards 2223 correspond to each other one by one, and the mixing racks 281 are located in the corresponding splash guards 2223. The liquid leakage holes 2221 are all arranged at the outer side of the splash guard 2223. As a specific embodiment, the splash guard 2223 has a square cross-section in this embodiment.

Further, as shown in fig. 13, the lower end surface of the splash guard 2223 is located below the upper end surface of the separation cylinder 2212.

Further, as shown in fig. 13 and 14, the cold storage ice block 223 is provided with a positioning hole 2231 matched with the sealing cover 224, and the sealing cover 224 is inserted into the positioning hole 2231 of the cold storage ice block 223. Therefore, the sealing cover 224 can play a role in sealing on one hand and a role in positioning on the other hand, and the cold accumulation ice blocks 223 and the liquid collecting box 221 are prevented from being collided violently in the transportation process or the cold accumulation ice blocks 223 are prevented from being cracked too early, and the endurance capacity is influenced.

Further, as shown in fig. 14, positioning corner plates 2224 are provided at the four corners of the cold storage ice blocks 223 on the upper side of the partition 222, respectively.

Example two

The driving motor is arranged on the rear side surface of the liquid collecting box, and a power output shaft of the driving motor faces downwards. The stirring shaft is fixedly provided with driven belt wheels below the liquid collecting tank, driving belt wheels are fixedly arranged on a power output shaft of the driving motor, and the driving belt wheels are respectively connected with the two driven belt wheels on the stirring shaft through synchronous belts. The rest of the structure is the same as the first embodiment.

EXAMPLE III

Every the isolating cylinder in all be provided with driving motor, just driving motor with mounting panel fixed connection in the isolating cylinder, driving motor adopt the hollow shaft motor, the upper end of (mixing) shaft pass through bearing assembly with the baffle rotate and be connected, the lower extreme of (mixing) shaft inserts in driving motor's the hollow shaft. The rest of the structure is the same as the first embodiment.

Claims

1. The utility model provides a can independently prepare multi-temperature-zone cold storage transportation equipment of coolant which characterized in that: the refrigerator comprises a heat insulation box body, wherein partition boards are arranged in the heat insulation box body, the partition boards divide the inner space of the heat insulation box body into a plurality of refrigerating rooms, and temperature control units are arranged in the refrigerating rooms;

and a stirring device is arranged in the liquid collecting tank.

2. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 1, is characterized in that: the rear side surface of the radiation refrigeration shell is provided with a depressed part depressed towards the front side, and the liquid collecting box is arranged in the depressed part.

3. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 2, is characterized in that: the liquid feed pipe including being located horizontal part on the side of radiation refrigeration casing and being located the vertical portion of radiation refrigeration casing rear side, the left and right both sides of radiation refrigeration casing all are provided with back the liquid pipe, back the liquid pipe including the portion of converging, the rear end of the portion of converging is provided with the first connecting portion that extend to the inboard, the inner of first connecting portion through the second connecting portion with spray the person in charge and link to each other, the radiation pipe network including being located the many radiant tubes of the left and right both sides of liquid feed pipe.

4. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 3, is characterized in that: the confluence part and the first connecting part of the liquid return pipe are obliquely arranged.

5. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 1, is characterized in that: the radiation refrigeration shell is characterized in that a groove matched with a part of radiation pipelines attached to the radiation refrigeration shell is formed in the outer side face of the radiation refrigeration shell, and heat conduction glue is smeared on the inner side face of the groove.

6. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 1, is characterized in that: the bottom plate of collection liquid box is provided with an isolation section of thick bamboo, just keep apart a section of thick bamboo highly be higher than the degree of depth of coolant in the collection liquid box, agitating unit include the stirring frame, the stirring frame including being located keep apart a section of thick bamboo in the (mixing) shaft, the (mixing) shaft the upper end with the baffle rotate to be connected, the (mixing) shaft on be located baffle and isolation section of thick bamboo between be provided with a plurality of connecting rods that are radial evenly arranged along the circumferencial direction, the connecting rod on be located keep apart a section of thick bamboo's outside is provided with the puddler, the collection liquid box on be provided with and be used for the drive (mixing) shaft pivoted driving motor.

7. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 6, is characterized in that: the isolation cylinder in fixedly be provided with the mounting panel, the lower extreme of (mixing) shaft with the mounting panel rotate to be connected, the lower extreme of (mixing) shaft passes the bottom plate of collecting tank extends to the below of collecting tank, just the lower extreme of (mixing) shaft pass through drive mechanism with driving motor's power output shaft links to each other.

8. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 7, is characterized in that: the lower end of the stirring shaft is fixedly provided with a worm wheel, the bottom surface of the liquid collecting box is rotatably provided with a driving shaft, the driving shaft is fixedly provided with a worm matched with the worm wheel, and a power output shaft of the driving motor is connected with the driving shaft through a transmission mechanism.

9. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 6, is characterized in that: and a flow blocking cylinder which is coaxial with the stirring shaft is arranged on the upper side surface of the partition plate, and a sealing cover is arranged on the flow blocking cylinder.

10. The multi-temperature-zone refrigerated transport equipment capable of automatically preparing the coolant according to claim 6, is characterized in that: be provided with the splashproof section of thick bamboo on the downside of baffle, the stirring frame be located the splashproof section of thick bamboo in, the weeping hole all set up in the outside of splashproof section of thick bamboo.