CN120593418A

CN120593418A - A cascade refrigeration unit for pharmaceutical intermediates

Info

Publication number: CN120593418A
Application number: CN202511099782.3A
Authority: CN
Inventors: 张逢炉; 郑大治; 高建勋
Original assignee: Fujian Bono Anke Medical Science And Technology Co ltd
Current assignee: Fujian Bono Anke Medical Science And Technology Co ltd
Priority date: 2025-08-07
Filing date: 2025-08-07
Publication date: 2025-09-05
Anticipated expiration: 2045-08-07
Also published as: CN120593418B

Abstract

The invention discloses an overlapping refrigerating unit for a medical intermediate, which relates to the technical field of overlapping refrigerating machines and comprises two groups of evaporators, wherein a cold cylinder is arranged above the evaporators, two air pumps are arranged above the cold cylinder, one sides of the air pumps, which are far away from each other, respectively penetrate through and are fixedly connected with the top of the outer wall of the cold cylinder, one end of the air pump, which is far away from the air pump, penetrates through and is fixedly connected with the top of the outer wall of the cold cylinder, respectively, the top of the outer wall of the air pump is fixedly connected with an L-shaped pipe, the bottom of the L-shaped pipe is respectively penetrated through and is fixedly connected with the top of the evaporators, a U-shaped pipe is fixedly arranged on the top surface of the cold cylinder, a cold tank is fixedly arranged at the bottom of the left side of the cold tank, and an exhaust pipe is fixedly arranged at the bottom of the cold tank.

Description

Cascade refrigerating unit for medical intermediate

Technical Field

The invention relates to the technical field of cascade freezers, in particular to a cascade freezer unit for a medical intermediate.

Background

The pharmaceutical intermediates are semi-finished products in the pharmaceutical synthesis process, generally refer to traditional Chinese medicine raw materials, the synthesis reaction and crystallization process (such as low-temperature crystallization to improve purity) of a plurality of pharmaceutical intermediates and solvent recovery (such as low-boiling point solvent) are required to be carried out at the temperature of-40 ℃ to-80 ℃ or lower, and the main function of the cascade refrigerating unit for the pharmaceutical intermediates is to manufacture equipment for cold air storage of the pharmaceutical intermediates, realize deep refrigeration and ensure the quality and the effectiveness of the pharmaceutical intermediates.

Patent number CN220083359U discloses a cascade refrigeration unit for medical intermediate, which comprises a box body, the intercommunication has the evaporimeter on a lateral wall of box, the intercommunication has the conveyer pipe on a lateral wall of evaporimeter, the low temperature case subassembly is installed to the other end of conveyer pipe, the low temperature case subassembly includes the low temperature case body, the spout has been seted up to the bottom edge of low temperature case body, be provided with the baffle in the low temperature case body, the cavity has been seted up between low temperature case body and the baffle, be provided with a plurality of groups thing boards on the baffle, a plurality of groups delivery port have been seted up on the baffle, be provided with the air pump on the low temperature case body bottom inner wall, be provided with the door structure that opens and shuts on a lateral wall of conveyer pipe is kept away from to the low temperature case body, the observation window is installed on the lateral wall of door structure that opens and shuts, has avoided the space narrow and small messenger's deposited article to receive the extrusion, has improved the intact degree that the article was deposited.

However, the cascade refrigerating unit for the medical intermediate has the following problems that impurities contained in cold air are easy to pollute the medical intermediate in the continuous refrigeration process of the medical intermediate, so that the synthesis effect of the medical intermediate is poor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a cascade refrigerating unit for a medical intermediate, which solves the problems in the prior art.

The invention aims at achieving the purposes, the cascade refrigeration unit for the medical intermediate body comprises two groups of evaporators, a cold cylinder is arranged above the evaporators, two air pumps are arranged above the cold cylinder, one sides, far away from each other, of the air pumps penetrate through and are fixedly provided with cold air pipes, one ends, far away from the air pumps, of the cold air pipes penetrate through and are fixedly connected with the tops of the outer walls of the cold cylinder, L-shaped pipes are respectively fixed at the tops of the outer walls of the air pumps, the bottom ends of the L-shaped pipes penetrate through and are fixedly connected with the tops of the evaporators respectively, U-shaped pipes are fixedly connected with the top surfaces of the U-shaped pipes, an exhaust pipe is arranged at the bottom of the left side of the cold cylinder, a motor is fixedly arranged at the bottom surface of the cold cylinder, the cold cylinder is located in front of the evaporators, a shaft disc penetrates through and is rotatably arranged at the bottom end inside the cold cylinder, the bottom end of the shaft disc is fixedly connected with the top surface of the rotating shaft of the motor, a plurality of active plates are fixedly connected with the top surface of the shaft disc, an inner wall of the air cylinder is fixedly provided with an L-shaped pipe, the top surface of the air pump is fixedly connected with a rotary air cylinder, the active plate is fixedly connected with the top surface of the air cylinder, the air cylinder is fixedly connected with the rotary air cylinder, the active plate enters the rotary frame, and the active plate enters the air cylinder and the rotary frame, and the active plate enters the cold cylinder into the cold cylinder, and the cold cylinder and the active plate and the cold cylinder.

According to the technical scheme, the right side of the evaporator is respectively and fixedly provided with the circular cover, the right side of the circular cover is respectively provided with the two air ports, the air ports are used for heat exchange of the evaporator, the bottoms of the left side and the right side of Leng Tong are penetrated and fixedly provided with the drain pipes, and the drain pipes are used for draining condensed water in the cold cylinder.

According to the technical scheme, the bottom surface of the cold tank is provided with the supporting leg, the active carbon plate comprises a square frame and a carbon plate main body, the bottom surface of the square frame of the active carbon plate is fixed on the top surface of the shaft disc, the carbon plate main body is arranged on the inner wall of the square frame, and the square frame is used for stably supporting the carbon plate main body.

According to the technical scheme, the U-shaped pipe is positioned between the two air pumps, the exhaust pipe is positioned in front of the evaporator, and the coil frame is positioned right below the U-shaped pipe.

According to the technical scheme, the top surface of circle frame is provided with sterilization apparatus, sterilization apparatus is arranged in the kill bacteria in the air conditioning, sterilization apparatus's outer wall top is provided with fan gas device, fan gas device is used for fanning the stacked air conditioning in cold jar inside top.

According to the technical scheme, sterilization apparatus includes the diaphragm, the diaphragm is fixed at the circle frame top surface, be fixed with the dome in the middle of the diaphragm bottom surface, the purple light lamp, purple light lamp fixed mounting is at the inside top of dome, a hole section of thick bamboo, the hole section of thick bamboo is installed on the dome inner wall, a plurality of round holes have been seted up to hole section of thick bamboo outer wall, and the diaphragm drives the dome forward rotation, and the dome drives purple light lamp forward rotation, and the dome drives hole section of thick bamboo forward rotation, and the rotatory illumination of round hole through hole section of thick bamboo of ultraviolet ray of purple light lamp is in the cold jar, the ultraviolet ray that the purple light lamp shines is arranged in killing the bacterium in the air conditioning.

According to the technical scheme, the circular cover outer wall is fixed with two L-shaped plates, the L-shaped plate bottom surface is fixed with a thin pole respectively, thin pole bottom is fixed with a spring respectively, the one end that thin pole was kept away from to the spring and the panel top surface fixed connection, L-shaped plate drive thin pole corotation, and thin pole drives the spring corotation, and the spring follows the panel rotation, the thin pole supports the circular cover through the elasticity of spring compression, reduces the amplitude when the circular cover is rotatory.

According to the technical scheme, the dome is located in the middle of the inside of the ring frame, the ultraviolet lamp is suspended in the middle of the inside of the hole barrel, the hole barrel is suspended above the shaft disc, and the L-shaped plate is located below the transverse plate.

According to the technical scheme, the fan device comprises a return-shaped frame, the return-shaped frame is fixed at the top of the outer wall of the thin rod respectively, the top surface of the return-shaped frame is fixed with an inclined plate respectively, the inclined plate is in an inverted splayed shape, the long rod penetrates through and is fixed at one side of the two inclined plates, which is close to each other, the long rod is used for supporting the inclined plate, the arc-shaped fan plate is fixed at one end of the two inclined plates, which is far away from the return-shaped frame, the return-shaped frame drives the inclined plate to rotate positively, the inclined plate drives the long rod to rotate positively, the inclined plate drives the arc-shaped fan plate to rotate positively, and the arc-shaped fan plate fans cold air above the inside of the cold tank.

According to the technical scheme, the outer wall of the long rod is fixedly provided with two ring blocks, the top surface of each ring block is fixedly provided with a wide plate, the top surface of each wide plate is fixedly provided with a temperature detector, the ring blocks drive the wide plates to rotate positively, the wide plates drive the temperature detectors to rotate positively, the temperature detectors contact cold air in the cold tank in a large area in the rotating process, and the temperature detectors are used for monitoring the cold air cold in the cold tank.

The invention provides a cascade refrigerating unit for a medical intermediate. The beneficial effects are as follows:

(1) According to the invention, the evaporator, the cold cylinder, the cold air pipe, the air pump, the L-shaped pipe, the U-shaped pipe, the cold tank, the exhaust pipe, the shaft disc, the active carbon plate and the ring frame are matched with the concave ring frame, the L-shaped pipe extracts cold air in the evaporator, the L-shaped pipe is conveyed into the air pump, the air pump inputs the cold air into the cold air pipe, the cold air pipe conveys the cold air into the cold cylinder, the cold cylinder conveys the cold air into the U-shaped pipe, the U-shaped pipe conveys the cold air into the cold tank, the shaft disc of a motor on the cold tank drives the active carbon plate to positively rotate, the active carbon plate drives the ring frame to positively rotate, the ring frame rotates in the concave ring frame, so that the active carbon plate is in contact with the cold air in the cold tank in a large area in the rotating process, and impurities in the cold air are filtered by the active carbon plate, so that the impurities in the cold air are prevented from causing bad synthesis effect of medical intermediates.

(2) According to the invention, through the arrangement of the sterilization device, the cross plate, the circular cover and the ultraviolet lamp are matched with the hole barrel, the cross plate drives the circular cover to rotate forward, the circular cover drives the ultraviolet lamp to rotate forward, ultraviolet rays of the ultraviolet lamp are irradiated in the cold tank through the round hole of the hole barrel, the round hole of the hole barrel emits the ultraviolet rays to kill bacteria in cold air, and the medical intermediate is prevented from being polluted by bacteria due to the fact that bacteria are contained in the cold air in the cold tank.

(3) According to the invention, through the arrangement of the sterilization device, the L-shaped plate and the thin rod are matched with the spring, the L-shaped plate drives the thin rod to rotate forward, the thin rod drives the spring to rotate forward, the spring rotates along with the shaft disc, the thin rod supports the L-shaped plate through the compression elastic force of the spring, the L-shaped plate supports the rotating circular cover, and the ultraviolet lamp is prevented from being easily damaged due to strong vibration generated by the circular cover.

(4) According to the invention, through the arrangement of the fan air device, the return frame, the inclined plate and the long rod are matched with the arc-shaped fan plate, the return frame drives the inclined plate to rotate forward, the inclined plate drives the long rod to rotate forward, the long rod supports the inclined plate to rotate forward, the inclined plate drives the arc-shaped fan plate to rotate forward, and the arc-shaped fan plate fans cold air accumulated above the cold tank in the rotating process, so that poor cold discharge effect of the cold tank caused by accumulation of the cold air above the cold tank is prevented.

(5) According to the invention, through the arrangement of the air-blowing device, the ring block and the wide plate are matched with the temperature detector, the ring block drives the wide plate to rotate positively, the wide plate drives the temperature detector to rotate positively, and the temperature detector contacts cold air in the cold tank in a large area in the rotating process, so that poor synthesis quality of medical intermediates caused by inaccurate cold air discharge of the cold tank is prevented.

Drawings

FIG. 1 is a schematic diagram of the overall invention;

FIG. 2 is a schematic illustration of the internal components of the present invention;

FIG. 3 is a schematic cross-sectional view of the cold tank of the present invention;

FIG. 4 is a schematic view of a sterilization apparatus according to the present invention;

FIG. 5 is an enlarged partial schematic view of the invention at A in FIG. 4;

FIG. 6 is a schematic view of a fan assembly according to the present invention;

Fig. 7 is an enlarged partial schematic view of the present invention at B in fig. 6.

The device comprises a evaporator, 101, a round cover, 102, an air port, 2, a cold cylinder, 201, a water drain pipe, 3, a cold air pipe, 4, an air pump, 5, an L-shaped pipe, 6, a U-shaped pipe, 7, a cold tank, 8, an air exhaust pipe, 9, a shaft disc, 10, an active carbon plate, 11, a ring frame, 12, a concave ring frame, 13, a sterilization device, 131, a cross plate, 132, a round cover, 133, a purple light lamp, 134, a hole cylinder, 135, an L-shaped plate, 136, a thin rod, 137, a spring, 14, an air fan device, 141, a circular frame, 142, an inclined plate, 143, a long rod, 144, an arc-shaped fan plate, 145, a ring block, 146, a wide plate, 147 and a temperature detector.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to FIGS. 1-7, an embodiment of the invention is a cascade refrigeration unit for pharmaceutical intermediates, comprising two groups of evaporators 1, wherein a round cover 101 is fixedly arranged on the right side of each evaporator 1, two air ports 102 are respectively arranged on the right side of each round cover 101, the air ports 102 are used for heat exchange of the evaporators 1, a cold cylinder 2 is arranged above each evaporator 1, drain pipes 201 are penetrated and fixed at the bottoms of the left side and the right side of each cold cylinder 2, and the drain pipes 201 are used for draining condensed water in the cold cylinders 2;

Two air pumps 4 are arranged above the cold cylinder 2, one sides of the air pumps 4 far away from each other penetrate through and are fixedly provided with cold air pipes 3, one ends of the cold air pipes 3 far away from the air pumps 4 penetrate through and are fixedly connected with the top of the outer wall of the cold cylinder 2, the top of the outer wall of the air pump 4 is fixedly provided with L-shaped pipes 5,L, the bottom ends of the U-shaped pipes 6 are fixedly connected with the top of the evaporator 1, the U-shaped pipes 6 are fixedly arranged on the top surface of the cold cylinder 2, the U-shaped pipes 6 are positioned between the two air pumps 4, the bottom ends of the U-shaped pipes 6 are fixedly provided with cold tanks 7, the bottom surface of the cold tanks 7 is provided with supporting legs, the bottom of the left side of the cold tanks 7 is provided with an exhaust pipe 8, the exhaust pipe 8 is positioned in front of the evaporator 1, the bottom surface of the cold tanks 7 is fixedly provided with a motor, the cold tanks 7 are positioned in front of the evaporator 1, the shaft disc 9 penetrates through and is rotatably arranged at the bottom end inside the cold tank 7, the bottom end of the shaft disc 9 is fixedly connected with the top surface of a rotating shaft of the motor, a plurality of active carbon plates 10 are fixedly arranged on the top surface of the shaft disc 9, each active carbon plate 10 comprises a square frame and a carbon plate main body, the bottom surface of the square frame of each active carbon plate 10 is fixedly arranged on the top surface of the shaft disc 9, the carbon plate main body is arranged on the inner wall of the square frame, the square frame is used for stably supporting the carbon plate main body, a ring frame 11 is fixedly arranged above the inner wall of the cold tank 7, the ring frame 11 is positioned under the U-shaped pipe 6, a concave ring frame 12 is fixedly arranged on the top surface of each active carbon plate 10, the outer wall of the concave ring frame 12 is rotatably connected with the inner wall of the ring frame 11, and the active carbon plates 10 are used for filtering impurities in cold air;

When the device is used, an operator starts the evaporator 1 and the air pump 4, the round cover 101 covers the evaporator 1, the evaporator 1 exchanges heat through the air port 102 to manufacture cold air, the L-shaped pipe 5 extracts the cold air in the evaporator 1, the L-shaped pipe 5 is conveyed into the air pump 4, the air pump 4 inputs the cold air into the cold air pipe 3, the cold air pipe 3 conveys the cold air into the cold cylinder 2, the drain pipe 201 on the cold cylinder 2 discharges condensate water, the cold cylinder 2 conveys the cold air into the U-shaped pipe 6, the U-shaped pipe 6 conveys the cold air into the cold cylinder 7, the operator starts the motor on the cold cylinder 7, the rotating shaft of the motor starts to rotate positively, the rotating shaft of the motor drives the shaft disc 9 to rotate positively in the cold cylinder 7, the shaft disc 9 drives the active carbon plate 10 to rotate positively, the active carbon plate 10 drives the ring frame 11 to rotate positively in the concave ring frame 12, the active carbon plate 10 contacts the cold air in the cold cylinder 7 in a large area in the rotating process, the active carbon plate 10 filters impurities in the cold air, the air is discharged into the refrigerator, and the medicine intermediate can be continuously refrigerated in the refrigerator, so that the medicine intermediate can be refrigerated and the medicine is not continuously stacked in the refrigerating machine, and the medicine is prevented from causing the poor refrigerating effect of the intermediate medicine;

The top surface of the ring frame 11 is provided with a sterilizing device 13, the sterilizing device 13 is used for killing bacteria in cold air, the top of the outer wall of the sterilizing device 13 is provided with a fan device 14, and the fan device 14 is used for fanning the cold air accumulated above the inside of the cold tank 7.

The working principle is that the L-shaped pipe 5 extracts cold air in the evaporator 1, the L-shaped pipe 5 is conveyed into the air pump 4, the air pump 4 inputs the cold air into the cold air pipe 3, the cold air pipe 3 conveys the cold air into the cold cylinder 2, the drain pipe 201 on the cold cylinder 2 discharges condensed water, the cold cylinder 2 conveys the cold air into the U-shaped pipe 6, the U-shaped pipe 6 conveys the cold air into the cold cylinder 7, the rotating shaft of the motor drives the shaft disc 9 to rotate positively, the shaft disc 9 rotates positively in the cold cylinder 7, the shaft disc 9 drives the active carbon plate 10 to rotate positively, the active carbon plate 10 drives the coil frame 11 to rotate positively, and the coil frame 11 rotates in the concave ring frame 12.

Referring to fig. 1-7, in another embodiment of the present invention, the sterilization device 13 includes a cross plate 131, the cross plate 131 is fixed on the top surface of the ring frame 11, a dome 132 is fixed in the middle of the bottom surface of the cross plate 131, a violet lamp 133 is fixedly installed on the top end of the inside of the dome 132, a hole barrel 134 is installed on the inner wall of the dome 132, a plurality of round holes are formed on the outer wall of the hole barrel 134, the dome 132 is located in the middle of the inside of the ring frame 11, the violet lamp 133 is suspended in the middle of the inside of the hole barrel 134, the hole barrel 134 is suspended above the shaft disk 9, and ultraviolet rays irradiated by the violet lamp 133 are used for killing bacteria in cold air;

When the active carbon plate 10 drives the coil frame 11 to rotate forward, the coil frame 11 drives the transverse plate 131 to rotate forward, the transverse plate 131 drives the circular cover 132 to rotate forward, the circular cover 132 drives the ultraviolet lamp 133 to rotate forward, the circular cover 132 drives the hole barrel 134 to rotate forward, an operator starts the ultraviolet lamp 133, the ultraviolet lamp 133 emits ultraviolet rays, the ultraviolet rays of the ultraviolet lamp 133 irradiate in the cold tank 7 through the round hole of the hole barrel 134 in a rotating manner, the round hole of the hole barrel 134 emits ultraviolet rays to kill bacteria in cold air, and therefore the problem that when a cascade refrigerating unit is used for continuously refrigerating medicine intermediates, the medicine intermediates are polluted by bacteria due to the fact that bacteria are contained in the cold air in the cold tank 7 is avoided.

The outer wall of the circular cover 132 is fixedly provided with two L-shaped plates 135, the L-shaped plates 135 are positioned below the transverse plates 131, the bottom surfaces of the L-shaped plates 135 are respectively fixedly provided with a thin rod 136, the bottom ends of the thin rods 136 are respectively fixedly provided with a spring 137, one end, away from the thin rods 136, of the spring 137 is fixedly connected with the top surface of the shaft disc 9, the thin rods 136 support the circular cover 132 through the elastic force compressed by the springs 137, and the amplitude of the circular cover 132 during rotation is reduced;

While the circular cover 132 drives the ultraviolet lamp 133 to rotate forward, the circular cover 132 drives the L-shaped plate 135 to rotate forward, the L-shaped plate 135 drives the thin rod 136 to rotate forward, the thin rod 136 drives the spring 137 to rotate forward, the spring 137 rotates along with the shaft disc 9, the thin rod 136 supports the L-shaped plate 135 through the compression elastic force of the spring 137, the L-shaped plate 135 supports the rotating circular cover 132, so that the circular cover 132 can not generate strong vibration amplitude in the rotating process, and the problem that the ultraviolet lamp 133 is easy to vibrate and damage due to the strong vibration amplitude of the circular cover 132 when the cascade refrigerating machine unit is used for continuously refrigerating medical intermediates is avoided.

The fan device 14 comprises a square frame 141, the square frame 141 is respectively fixed at the top of the outer wall of the thin rod 136, the top surface of the square frame 141 is respectively fixed with an inclined plate 142, the inclined plates 142 are in an inverted splayed shape, long rods 143, the long rods 143 penetrate through and are fixed at one sides of the two inclined plates 142, which are close to each other, the long rods 143 are used for supporting the inclined plates 142, the arc-shaped fan plates 144 are respectively fixed at one ends of the two inclined plates 142, which are far away from the square frame 141, and the arc-shaped fan plates 144 fan the cool air above the interior of the cooling tank 7;

While the L-shaped plate 135 drives the thin rod 136 to rotate forward, the thin rod 136 drives the square frame 141 to rotate forward, the square frame 141 drives the inclined plate 142 to rotate forward, the inclined plate 142 drives the long rod 143 to rotate forward, the long rod 143 supports the inclined plate 142 to rotate, meanwhile, the inclined plate 142 drives the arc-shaped fan plate 144 to rotate forward, and the arc-shaped fan plate 144 fans cold air accumulated above the cold tank 7 in the rotating process, so that the problem that the cold tank 7 is poor in cold discharge effect due to accumulation of the cold air above the cold tank 7 when the cascade refrigerating machine is used for continuously refrigerating medical intermediates is avoided.

Two ring blocks 145 are fixed on the outer wall of the long rod 143, a wide plate 146 is fixed on the top surface of the ring blocks 145, a temperature detector 147 is fixed on the top surface of the wide plate 146, and the temperature detector 147 is used for monitoring the cold air cooling degree in the cold tank 7;

When the inclined plate 142 drives the long rod 143 to rotate positively, the long rod 143 drives the annular block 145 to rotate positively, the annular block 145 drives the wide plate 146 to rotate positively, the wide plate 146 drives the temperature detector 147 to rotate positively, the temperature detector 147 contacts cold air in the cold tank 7 in a large area in the rotating process, the temperature detector 147 monitors cold air cooling degree in the cold tank 7 in real time, and therefore the problem that poor synthetic quality of the medicine intermediate is caused by inaccurate cold air cooling degree discharged by the cold tank 7 when the cascade refrigerating machine unit continuously refrigerates the medicine intermediate is avoided.

The working principle is that the ring frame 11 drives the transverse plate 131 to rotate forward, the transverse plate 131 drives the circular cover 132 to rotate forward, the circular cover 132 drives the ultraviolet lamp 133 to rotate forward, the circular cover 132 drives the hole barrel 134 to rotate and the ultraviolet rays of the ultraviolet lamp 133 irradiate in the cold tank 7 through the circular hole of the hole barrel 134;

the circular cover 132 drives the L-shaped plate 135 to rotate positively, the L-shaped plate 135 drives the thin rod 136 to rotate positively, the thin rod 136 drives the spring 137 to rotate positively, the spring 137 rotates along with the shaft disc 9, the thin rod 136 supports the L-shaped plate 135 through the compression elasticity of the spring 137, and the L-shaped plate 135 supports the rotating circular cover 132;

The thin rod 136 drives the square frame 141 to rotate positively, the square frame 141 drives the inclined plate 142 to rotate positively, the inclined plate 142 drives the long rod 143 to rotate positively, the long rod 143 supports the inclined plate 142 to rotate, and meanwhile, the inclined plate 142 drives the arc-shaped fan plate 144 to rotate positively, and the arc-shaped fan plate 144 fans the cold air accumulated above the cold tank 7 in the rotating process;

The long rod 143 drives the ring block 145 to rotate forward, the ring block 145 drives the wide plate 146 to rotate forward, the wide plate 146 drives the temperature detector 147 to rotate forward, the temperature detector 147 contacts cold air in the cold tank 7 in a large area in the rotating process, and the temperature detector 147 monitors cold air cooling in the cold tank 7 in real time.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The cascade refrigerating unit for the medical intermediate comprises two groups of evaporators (1), wherein a cold cylinder (2) is arranged above the evaporators (1), two air pumps (4) are arranged above the cold cylinder (2), one sides, far away from each other, of the air pumps (4) are respectively penetrated and fixedly provided with a cold air pipe (3), one end, far away from the air pumps (4), of the cold air pipes (3) is penetrated and fixedly connected with the top of the outer wall of the cold cylinder (2), L-shaped pipes (5) are respectively fixed at the top of the outer wall of the air pumps (4), and the bottom ends of the L-shaped pipes (5) are respectively penetrated and fixedly connected with the top of the evaporators (1);

The U-shaped pipe (6), U-shaped pipe (6) is fixed at the top surface of cold section of thick bamboo (2), U-shaped pipe (6) bottom is fixed with cold jar (7), blast pipe (8) have been seted up to cold jar (7) left side bottom, cold jar (7) bottom surface is fixed with the motor, cold jar (7) are located the place ahead of evaporimeter (1);

the cooling device comprises a shaft disc (9), wherein the shaft disc (9) penetrates through and rotates to be installed at the bottom end inside a cooling tank (7), the bottom end of the shaft disc (9) is fixedly connected with the top surface of a rotating shaft of a motor, a plurality of active carbon plates (10) are fixed on the top surface of the shaft disc (9), a ring frame (11) is fixed above the inner wall of the cooling tank (7), a concave ring frame (12) is fixed on the top surface of the active carbon plates (10), the outer wall of the concave ring frame (12) is rotatably connected with the inner wall of the ring frame (11), and the active carbon plates (10) are used for filtering impurities in cooling air.

2. The cascade refrigerating unit for pharmaceutical intermediates according to claim 1, wherein a round cover (101) is fixedly installed on the right side of the evaporator (1), two air ports (102) are formed in the right side of the round cover (101) respectively, the air ports (102) are used for heat exchange of the evaporator (1), drain pipes (201) penetrate through and are fixedly arranged at the bottoms of the left side and the right side of the cooling cylinder (2), and the drain pipes (201) are used for draining condensate water in the cooling cylinder (2).

3. A cascade refrigerating unit for pharmaceutical intermediates according to claim 2, wherein the bottom surface of the cold tank (7) is provided with supporting legs, the active carbon plate (10) comprises a square frame and a carbon plate main body, the bottom surface of the square frame of the active carbon plate (10) is fixed on the top surface of the shaft disc (9), the carbon plate main body is arranged on the inner wall of the square frame, and the square frame is used for stably supporting the carbon plate main body.

4. A cascade refrigeration unit for pharmaceutical intermediates according to claim 3, characterized in that the U-shaped tube (6) is located in the middle of the two air pumps (4), the exhaust tube (8) is located in front of the evaporator (1), and the coil frame (11) is located directly below the U-shaped tube (6).

5. The cascade refrigeration unit for pharmaceutical intermediates according to claim 4, wherein a sterilizing device (13) is arranged on the top surface of the ring frame (11), and the sterilizing device (13) is used for sterilizing bacteria in cold air;

the top of the outer wall of the sterilization device (13) is provided with a fan device (14), and the fan device (14) is used for fanning cold air accumulated above the inside of the cold tank (7).

6. The cascade refrigeration unit for pharmaceutical intermediates according to claim 5, wherein the sterilization device (13) comprises a cross plate (131), the cross plate (131) is fixed on the top surface of the ring frame (11), and a dome (132) is fixed in the middle of the bottom surface of the cross plate (131);

the ultraviolet lamp (133) is fixedly arranged at the top end inside the dome (132);

The hole cylinder (134), hole cylinder (134) are installed on dome (132) inner wall, a plurality of round holes have been seted up to hole cylinder (134) outer wall, ultraviolet ray that ultraviolet lamp (133) irradiated is used for killing the bacterium in the air conditioning.

7. The cascade refrigerating unit for pharmaceutical intermediates according to claim 6, wherein two L-shaped plates (135) are fixed on the outer wall of the dome (132), a thin rod (136) is fixed on the bottom surface of each L-shaped plate (135), a spring (137) is fixed on the bottom end of each thin rod (136), one end, away from the thin rod (136), of each spring (137) is fixedly connected with the top surface of the shaft disc (9), the thin rod (136) supports the dome (132) through the elastic force compressed by the springs (137), and the amplitude of the dome (132) during rotation is reduced.

8. A cascade refrigeration unit as recited in claim 7, wherein the dome (132) is located in the middle of the interior of the coil frame (11), the ultraviolet lamp (133) is suspended in the middle of the interior of the hole barrel (134), the hole barrel (134) is suspended above the shaft disk (9), and the L-shaped plate (135) is located below the transverse plate (131).

9. The cascade refrigeration unit for pharmaceutical intermediates according to claim 8, wherein the fan device (14) comprises a square frame (141), the square frames (141) are respectively fixed at the top of the outer wall of the thin rod (136), the top surfaces of the square frames (141) are respectively fixed with an inclined plate (142), and the inclined plates (142) are in an inverted splayed shape;

A long rod (143), wherein the long rod (143) penetrates and is fixed on one side, close to each other, of the two inclined plates (142), and the long rod (143) is used for supporting the inclined plates (142);

The arc-shaped fan plate (144), the arc-shaped fan plate (144) is respectively fixed at one end of the two inclined plates (142) far away from the square frame (141), and the arc-shaped fan plate (144) fans the cold air above the inside of the cold tank (7).

10. The cascade refrigeration unit for pharmaceutical intermediates according to claim 9, wherein two ring blocks (145) are fixed on the outer wall of the long rod (143), a wide plate (146) is fixed on the top surface of the ring blocks (145), a temperature detector (147) is fixed on the top surface of the wide plate (146), and the temperature detector (147) is used for monitoring cold air cooling in the cold tank (7).