Low-temperature cold trap for condensation of diborane

Abstract

The utility model belongs to the technical field of diborane production, and provides a low-temperature cold trap for diborane condensation, which comprises a shell, one end of the shell is of an opening structure, a refrigerating machine is fixedly mounted on the shell, the refrigerating machine is connected with a cold head penetrating into the shell, and a condensation plate is mounted on the end face of the cold head. A collecting box used in cooperation with the condensation plate is arranged in the shell, a scraping plate used for scraping frost on the condensation plate is arranged on the collecting box, and an adjusting assembly driving the collecting box to move is arranged in the shell. The technical problems that in the prior art, ice blocks on a condensation plate are difficult to rapidly remove, the ice block removing time is prolonged, and the production efficiency is reduced are solved. Compared with the prior art, the device has the beneficial effects that ice blocks on the condensation plate are quickly cleaned, the time consumption for removing the ice blocks on the condensation plate is reduced, the condensation effect of the condensation plate can be quickly recovered, the condensation removal of water vapor is accelerated, and the production efficiency of diborane is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of diborane production, in particular to a low-temperature cold trap for diborane condensation. Background Art

[0002] The boiling point of diborane is -92°C. It has active chemical properties and is highly toxic to the human body. It is soluble in ammonia, ether and carbon disulfide, slightly soluble in cold water, does not corrode metals, but is corrosive to materials such as rubber, polyester, fat, lubricating oil, and polyethylene.

[0003] During the production process of diborane, water vapor in it needs to be removed by condensation. Most existing cold traps use condensation pipes to achieve heat exchange, and the refrigeration equipment is set outside the cold trap. This will result in a long time of heat exchange from the refrigeration equipment to the condensation pipe, making its working efficiency unsatisfactory. In response to the above technical problems, the applicant has retrieved some prior arts, such as the Chinese patent with patent publication number CN218474899U. When in use, the cold head is inserted deep into the shell and then condensed through a condensation plate. However, after long-term use, more ice cubes are solidified on the condensation plate. At this time, the condensation plate can adsorb the ice cubes to saturation, and then cannot continue to condense and remove water vapor, so it takes a lot of time to melt and remove the ice cubes on the condensation plate, which increases the time required for the condensation plate to restore the condensation effect and reduces production efficiency. Utility Model Content

[0004] The utility model aims to provide a low-temperature cold trap for diborane condensation, aiming to solve the technical problem that it is difficult to quickly remove ice on the condensation plate in the prior art, which increases the time for removing ice and reduces production efficiency.

[0005] The utility model is implemented as follows: a low-temperature cold trap for condensing diborane comprises a shell, one end of the shell is an open structure and a refrigerator is fixedly installed on the shell, the refrigerator is connected to a cold head deep into the shell, a condensation plate is installed on the end surface of the cold head, a collection box used in conjunction with the condensation plate is arranged in the shell, a scraper for scraping frost on the condensation plate is arranged on the collection box, and an adjustment component for driving the collection box to move is arranged in the shell.

[0006] Further technical solution: A protective cover distributed around the cold head is fixedly installed on the condensing plate.

[0007] Further technical solution: A fixed reflector with a frame structure is fixedly installed in the shell, the fixed reflector is located at the open end of the shell, the fixed reflector is used in conjunction with a movable reflector fixedly installed on the collection box, and the area of ​​the movable reflector is larger than the area of ​​the internal groove area of ​​the fixed reflector.

[0008] Further technical solution: a mounting plate is slidably installed in the collecting box and a plurality of sets of elastic parts for applying thrust to the mounting plate are fixedly installed in the collecting box, a scraper is fixedly installed on the mounting plate and a plurality of sets are arranged, a plurality of sets of material drop troughs distributed between the scrapers are provided on the collecting box, the cross-section of the material drop troughs is trapezoidal, and a plurality of sets of baffles for closing the material drop troughs are fixedly installed on the mounting plate.

[0009] Further technical solution: the scraper penetrates the side wall of the collection box and one end thereof located outside the collection box is an inverted V-shaped structure.

[0010] Further technical solution: A plurality of guide plates distributed between the scrapers are fixedly mounted on the collection box, and the guide plates guide the falling ice cubes into the drop chute.

[0011] Further technical solution: A plurality of groups of heating plates distributed at intervals are fixedly installed in the collection box, and a drainage hose is connected to the collection box.

[0012] Further technical solution: The adjustment component includes a first telescopic member, which is fixedly installed in the shell and drives the lifting block to move up and down. A bracket is slidably installed on the lifting block, and the bracket is fixedly connected to the collection box.

[0013] Further technical solution: A second telescopic member for driving the bracket to move horizontally is fixedly installed on the lifting block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The cold head is directly inserted into the shell, thus avoiding the use of condenser tubes for condensation, reducing the heat exchange between the refrigeration equipment and the condenser tubes and the outside world, and improving the refrigeration efficiency.

[0016] 2. The ice on the condensing plate is scraped off by a scraper, so that the ice on the condensing plate can be quickly cleaned, and the time consumption for removing the ice on the condensing plate can be reduced, so that the condensing plate can quickly restore the condensation effect, thereby accelerating the condensation and removal of water vapor and improving the production efficiency of diborane.

[0017] 3. The ice scraped off the condensation plate can be collected and processed. The removed ice is melted and discharged in the collection box, which avoids the heat directly acting on the condensation plate and damage to the condensation plate and the cold head. The heat is released in the collection box, which has little effect on the temperature inside the shell, ensuring that the shell is always at a freezing temperature and improving the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0020] Figure 3 It is a schematic cross-sectional structural diagram of the collecting box in the utility model.

[0021] Figure 4 for Figure 3 A magnified schematic diagram of the A1 region in the middle.

[0022] Figure 5 It is a schematic diagram of the structure of fixing the reflective plate in the utility model.

[0023] In the attached drawings: 1. Shell; 2. Refrigerator; 3. Cold head; 4. Condensation plate; 5. Protective cover; 6. Collecting box; 7. Elastic member; 8. Mounting plate; 9. Scraper; 10. Guide plate; 11. Dropping chute; 12. Baffle; 13. Heating plate; 14. Drain hose; 15. First telescopic member; 16. Lifting block; 17. Bracket; 18. Second telescopic member; 19. Movable reflector; 20. Fixed reflector; 21. Adjustment assembly. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0026] like Figure 1-Figure 5 As shown, a low-temperature cold trap for diborane condensation provided by the utility model includes a shell 1, one end of the shell 1 is an open structure and a refrigerator 2 is fixedly installed on the shell 1, the refrigerator 2 is connected to a cold head 3 deep into the shell 1, a condensation plate 4 is installed on the end surface of the cold head 3, a protective cover 5 distributed around the cold head 3 is fixedly installed on the condensation plate 4, a collection box 6 for use with the condensation plate 4 is arranged in the shell 1, a scraper 9 for scraping frost on the condensation plate 4 is arranged on the collection box 6, and an adjustment component 21 for driving the collection box 6 to move is arranged in the shell 1.

[0027] In actual application, the present embodiment is refrigerated by the refrigerator 2 and the condensation plate 4 is cooled by the cold head 3, so that the condensation plate 4 is in a low temperature state. Since the cold head 3 is directly extended into the shell 1, a large amount of condensation pipe transmission is avoided, the heat exchange with the outside is reduced, and the refrigeration efficiency is improved. The cold head 3 is protected by the protective cover 5 to reduce the probability of damage to the cold head 3. When water vapor enters the shell 1, due to the low temperature of the condensation plate 4, the water vapor will condense on the condensation plate 4. When the condensation plate 4 is covered with a large number of ice cubes, the adjustment component 21 drives the collection box 6 to move upward and makes the scraper 9 contact with the condensation plate 4. Then the adjustment component 21 drives the collection box 6 to move horizontally so that the scraper 9 breaks and scrapes off the ice cubes on the condensation plate 4, and the ice cubes fall into the collection box 6 for melting and discharge. After the ice cubes are removed, the collection box 6 returns to its original position, which realizes the rapid cleaning of the ice cubes on the condensation plate 4, reduces the time consumption of removing the ice cubes on the condensation plate 4, enables the condensation plate 4 to quickly restore the condensation effect, and thus accelerates the condensation and discharge of water vapor, thereby improving the production efficiency of diborane.

[0028] like Figure 5 As shown, a low-temperature cold trap for diborane condensation provided by the utility model is provided. A fixed reflector 20 of a frame structure is fixedly installed in the shell 1. The fixed reflector 20 is located at the open end of the shell 1. The fixed reflector 20 is used in conjunction with a movable reflector 19 fixedly installed on the collection box 6. The area of ​​the movable reflector 19 is larger than the area of ​​the internal groove area of ​​the fixed reflector 20.

[0029] In actual application of this embodiment, the movable reflector 19 blocks the area not blocked by the fixed reflector 20, so that the open ends of the shell 1 can be blocked. The fixed reflector 20 and the movable reflector 19 reflect heat, thereby reducing the heat entering the shell 1 and reducing the impact on the cold head 3, thereby achieving full reflection of the heat entering the shell 1 and improving the heat reflection effect.

[0030] like Figure 2-Figure 4 As shown, a low-temperature cold trap for diborane condensation provided by the utility model is provided, a mounting plate 8 is slidably installed in the collecting box 6 and a plurality of sets of elastic members 7 for applying thrust to the mounting plate 8 are fixedly installed in the collecting box 6, a scraper 9 is fixedly installed on the mounting plate 8 and a plurality of sets are arranged, a plurality of sets of blanking troughs 11 distributed between the scrapers 9 are provided on the collecting box 6, the cross-section of the blanking troughs 11 is trapezoidal, and a plurality of sets of baffles 12 for closing the blanking troughs 11 are fixedly installed on the mounting plate 8.

[0031] Specifically, the scraper 9 passes through the side wall of the collecting box 6 and one end thereof located outside the collecting box 6 is an inverted V-shaped structure.

[0032] Specifically, a plurality of guide plates 10 distributed between the scrapers 9 are fixedly mounted on the collecting box 6 , and the guide plates 10 guide the falling ice cubes into the dropping chute 11 .

[0033] Specifically, a plurality of groups of heating plates 13 are fixedly installed in the collection box 6 and are distributed at intervals. The collection box 6 is connected to a drainage hose 14 .

[0034] In actual application of this embodiment, when the collecting box 6 moves upward, the scraper 9 contacts the condensation plate 4, and then the scraper 9 presses down the mounting plate 8 and compresses the elastic member 7. The mounting plate 8 moves downward to make the baffle 12 away from the material chute 11. Then the collecting box 6 drives the scraper 9 to move horizontally, so that the ice cubes on the condensation plate 4 are scraped off by the scraper 9. The scraped broken ice cubes fall on the guide plate 10 and enter the material chute 11 along the guide plate 10, and finally the ice cubes enter the collecting box 6. After the ice cubes are scraped off, the collecting box 6 returns to its original position. At this time, the mounting plate 8 returns to its original position under the action of the elastic member 7, thereby baffles the collecting box 6. The plate 12 closes the blanking chute 11 again. At this time, the ice cubes in the collection box 6 are heated by the heating plate 13. The ice cubes melt and flow out through the drainage hose 14, thereby realizing the rapid cleaning of the ice cubes on the condensation plate 4 and reducing the time consumption for removing the ice cubes on the condensation plate 4, so that the condensation plate 4 can quickly restore the condensation effect. The removed ice cubes are melted and discharged in the collection box 6, thereby avoiding the heat from directly acting on the condensation plate 4 and damaging the condensation plate 4 and the cold head 3. The heat is released in the collection box 6, which has little effect on the temperature inside the shell 1, thereby ensuring that the shell 1 is always at a freezing temperature and improving the condensation effect.

[0035] like Figure 2 As shown, a low-temperature cold trap for diborane condensation is provided by the utility model. The adjustment component 21 includes a first telescopic member 15, which is fixedly installed in the shell 1 and drives the lifting block 16 to move up and down. A bracket 17 is slidably installed on the lifting block 16, and the bracket 17 is fixedly connected to the collection box 6.

[0036] Specifically, a second telescopic member 18 is fixedly mounted on the lifting block 16 to drive the bracket 17 to move horizontally.

[0037] In actual application of this embodiment, the first telescopic member 15 drives the lifting block 16 to move up and down, so that the lifting block 16 drives the collection box 6 to move up and down through the bracket 17, and drives the bracket 17 to move in the horizontal plane through the second telescopic member 18, so that the collection box 6 can move laterally in the horizontal plane.

[0038] In an example of the present utility model, the first telescopic member 15 and the second telescopic member 18 are respectively the first electric telescopic rod and the second electric telescopic rod, and of course they can also be other components such as hydraulic cylinders that can actively change the length. The first electric telescopic rod drives the collection box 6 to move up and down, and the second electric telescopic rod drives the collection box 6 to move horizontally.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A low temperature cold trap for diborane condensation, comprising a shell (1), characterized in that: One end of the shell (1) is an open structure and a refrigerator (2) is fixedly mounted on the shell (1); the refrigerator (2) is connected to a cold head (3) extending deep into the shell (1); a condensation plate (4) is mounted on the end surface of the cold head (3); a collection box (6) for use with the condensation plate (4) is arranged in the shell (1); a scraper (9) for scraping frost on the condensation plate (4) is arranged on the collection box (6); and an adjustment component (21) for driving the collection box (6) to move is arranged in the shell (1).

2. A low temperature cold trap for diborane condensation according to claim 1, characterized in that: A protective cover (5) distributed around the cold head (3) is fixedly mounted on the condensation plate (4).

3. A low temperature cold trap for diborane condensation according to claim 1, characterized in that: A fixed reflector (20) of a frame-shaped structure is fixedly mounted in the housing (1). The fixed reflector (20) is located at the open end of the housing (1). The fixed reflector (20) is used in conjunction with a movable reflector (19) fixedly mounted on the collection box (6). The area of ​​the movable reflector (19) is larger than the area of ​​the internal through-slot region of the fixed reflector (20).

4. A low temperature cold trap for diborane condensation according to claim 1, characterized in that: A mounting plate (8) is slidably mounted in the collecting box (6), and a plurality of sets of elastic members (7) for applying thrust to the mounting plate (8) are fixedly mounted in the collecting box (6); a plurality of scrapers (9) are fixedly mounted on the mounting plate (8); a plurality of sets of material dropout troughs (11) are provided on the collecting box (6) and are distributed between the scrapers (9); the cross-section of the material dropout troughs (11) is trapezoidal; and a plurality of baffles (12) for closing the material dropout troughs (11) are fixedly mounted on the mounting plate (8).

5. A low temperature cold trap for diborane condensation according to claim 4, characterized in that: The scraper (9) passes through the side wall of the collection box (6), and one end of the scraper (9) located outside the collection box (6) is an inverted V-shaped structure.

6. A low temperature cold trap for diborane condensation according to claim 5, characterized in that: A plurality of guide plates (10) distributed between the scrapers (9) are fixedly mounted on the collection box (6), and the guide plates (10) guide the falling ice cubes into the drop chute (11).

7. A low temperature cold trap for diborane condensation according to claim 4, characterized in that: A plurality of groups of heating plates (13) are fixedly installed in the collection box (6) and are distributed at intervals. A drainage hose (14) is connected to the collection box (6).

8. A low temperature cold trap for diborane condensation according to claim 1, characterized in that: The adjustment assembly (21) comprises a first telescopic member (15), the first telescopic member (15) being fixedly mounted in the housing (1) and driving the lifting block (16) to move up and down, a bracket (17) being slidably mounted on the lifting block (16), and the bracket (17) being fixedly connected to the collection box (6).

9. A low temperature cold trap for diborane condensation according to claim 8, characterized in that: A second telescopic member (18) is fixedly mounted on the lifting block (16) for driving the bracket (17) to move laterally.

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