Dry ice liquid nitrogen mixed vaporization device

Abstract

The utility model provides a kind of dry ice liquid nitrogen mixed vaporization device, it is related to gas preparation technical field, including air temperature type vaporizer body, the bottom right side of air temperature type vaporizer body is fixedly connected with feed pipe, the bottom left side of air temperature type vaporizer body is fixedly connected with exhaust pipe, the right side of feed pipe is fixedly installed with mixed feed component, the outer surface of exhaust pipe is fixedly installed with filter component.The utility model passes through the mutual cooperation between the helical conveying rod of mixed feed component and agitating blade, the structure can be realized the synchronous transport of two mediums by helical blade, cooperate agitating blade to carry out secondary stirring to mixed medium, avoid dry ice granule agglomeration, while the heat preservation interlayer of transverse material conveying barrel reduces low temperature loss, finally realizes the uniform mixing of dry ice and liquid nitrogen, solves the problem of uneven mixing caused by traditional separate transport, ratio fluctuation, provides guarantee for subsequent stable vaporization.

Description

Technical Field

[0001] This utility model relates to the field of gas preparation technology, and in particular to a dry ice-liquid nitrogen mixing and vaporization device. Background Technology

[0002] Dry ice is solid carbon dioxide, which sublimates directly into a gaseous state at room temperature and pressure without leaving any liquid residue. Liquid nitrogen is liquid nitrogen gas, which easily and rapidly vaporizes at room temperature, and its volume expands significantly after vaporization. In some scenarios, a single gas cannot meet the requirements. For example, the food industry requires a low-temperature inert environment to extend the shelf life. Mixing carbon dioxide and nitrogen can achieve both low-temperature effect and gas inertness, while reducing the high cost of using liquid nitrogen alone and the unstable vaporization problem of using dry ice alone. Existing equipment mostly uses ambient temperature vaporizers to achieve the vaporization of dry ice and liquid nitrogen.

[0003] The existing technology has the following shortcomings: Because existing ambient air vaporizers lack a dedicated synchronous mixing and conveying structure, dry ice and liquid nitrogen are often introduced into the vaporizer separately. This can easily lead to insufficient contact and uneven mixing of the two media before vaporization, resulting in localized heat imbalances during subsequent vaporization. The ratio of carbon dioxide to nitrogen in the mixed gas fluctuates greatly, making it impossible to stably meet process requirements. At the same time, the exhaust pipe of the existing device does not have a filter structure that is easy to disassemble and reliably sealed. If dry ice leaves solid particles due to insufficient heat exchange, it can easily enter the downstream pipeline with the mixed gas and cause blockages. Furthermore, traditional filter components are cumbersome to disassemble and assemble, and the entire device must be stopped for maintenance, affecting operational efficiency. Utility Model Content

[0004] This invention proposes a dry ice and liquid nitrogen mixing and vaporization device, which can realize the synchronous and uniform mixing and conveying of dry ice and liquid nitrogen through a mixing and feeding component, and conveniently intercept incompletely vaporized dry ice particles with the help of a filter component, while ensuring sealing and ease of maintenance, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dry ice-liquid nitrogen mixing and vaporization device, comprising an ambient temperature vaporizer body, a feed pipe fixedly connected to the bottom right side of the ambient temperature vaporizer body, an exhaust pipe fixedly connected to the bottom left side of the ambient temperature vaporizer body, a guide valve provided in the middle of both the feed pipe and the exhaust pipe, a mixing feed assembly fixedly installed on the right side of the feed pipe, and a filter assembly fixedly installed on the outer surface of the exhaust pipe.

[0006] The mixing and feeding assembly includes a transverse conveying cylinder, which is fixedly connected to the right side of the feed pipe. An insulation jacket is fixedly connected to the inner side of the transverse conveying cylinder. A liquid nitrogen storage tank is fixedly connected to the top right side of the outer surface of the transverse conveying cylinder. A dry ice storage tank is fixedly connected to the top center of the outer surface of the transverse conveying cylinder. A second guide valve is provided at the bottom of both the liquid nitrogen storage tank and the dry ice storage tank. A drive motor is fixedly connected to the right end of the transverse conveying cylinder. The output shaft of the drive motor passes through the interior of the transverse conveying cylinder and is fixedly connected to a spiral conveying rod.

[0007] Preferably, the spiral conveyor includes a rotating shaft, which is rotatably connected to the middle of the transverse conveying cylinder and its right end is fixedly connected to the output shaft of the drive motor. Spiral blades are fixedly connected to the outer surface of the rotating shaft.

[0008] Preferably, a partition plate is fixedly connected to the right end of the outer surface of the rotating shaft, and a transmission wheel is rotatably connected to the upper right side of the partition plate. A transmission gear ring is meshed with the outer surface of the transmission wheel, and the transmission gear ring is fixedly connected to the right side of the inner surface of the transverse conveying cylinder.

[0009] Preferably, a rotating column is fixedly connected to the left side of the transmission gear ring, the left end of the rotating column extends through to the left side of the spiral blade, and a plurality of agitating blades are fixedly connected to the outer surface of the rotating column, with the plurality of agitating blades respectively arranged in each gap of the spiral blade.

[0010] Preferably, the filter assembly includes a plug-in mesh plate, and a connection slot is provided on the top of the outer surface of the exhaust pipe. The plug-in mesh plate is slidably inserted into the inner surface of the connection slot and extends into the interior of the exhaust pipe. Semi-circular clips are rotatably connected to the front and rear sides of the top of the plug-in mesh plate.

[0011] Preferably, sealing gaskets are fixedly connected to both the left and right sides of the inner surface of the semi-circular clamp, and a mating plate is fixedly connected to the bottom end of the semi-circular clamp. A connecting bolt that passes through the middle of the two mating plates is threaded together.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows: 1. In this utility model, the screw conveyor rod and the stirring blade of the mixing and feeding assembly work together. The principle is that the drive motor drives the rotating shaft and the screw blade to rotate. The screw blade first transports the liquid nitrogen falling from the liquid nitrogen tank on the right side, and then it merges with the dry ice particles falling from the dry ice tank in the middle. At the same time, the rotating shaft drives the partition plate to rotate. The transmission wheel on the partition plate rolls along the fixed transmission gear ring and rotates on its own, thereby driving the rotating column and the stirring blade to rotate in the gap between the screw blades. This structure can realize the synchronous transportation of the two media through the screw blades. The stirring blades work together to perform secondary stirring of the mixed media to avoid the agglomeration of dry ice particles. At the same time, the heat insulation jacket of the transverse conveying cylinder reduces the loss of low temperature. Finally, the uniform mixing of dry ice and liquid nitrogen is achieved, which solves the problems of uneven mixing and ratio fluctuation caused by traditional separate transportation, and provides a guarantee for subsequent stable vaporization.

[0013] 2. In this utility model, the interlocking mesh plate and the semi-circular clamping plate of the filter assembly cooperate with each other. The principle is that the interlocking mesh plate can be directly inserted into the connecting slot of the exhaust pipe to intercept the incompletely vaporized dry ice particles in the mixture. Then, by rotating the two semi-circular clamping plates and fitting them onto the outer wall of the exhaust pipe, the connecting bolts are used to tighten the connecting plate, so that the sealing gasket on the inner side of the clamping plate is tightly attached to the pipe. This structure not only realizes the quick disassembly and assembly of the filter components, eliminating the need to disassemble the entire exhaust pipe during maintenance, but also ensures that the low-temperature mixture does not leak through the sealing gasket. This solves the problems of cumbersome disassembly and assembly and easy air leakage of traditional filter structures, and improves the maintenance efficiency and operational sealing of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the dry ice-liquid nitrogen mixing and vaporization device of this utility model; Figure 2 This is a schematic diagram of the structure of the air-temperature vaporizer body of this utility model; Figure 3 This is a cross-sectional structural diagram of the mixing and feeding assembly of this utility model; Figure 4 This is an enlarged structural schematic diagram of the spiral conveyor rod of this utility model; Figure 5 This is a schematic diagram of the exhaust pipe and filter assembly of this utility model.

[0015] Legend: 1. Ambient air vaporizer body; 2. Feed pipe; 3. Mixing feed assembly; 31. Horizontal conveyor cylinder; 32. Insulation jacket; 33. Liquid nitrogen storage tank; 34. Dry ice storage tank; 35. Drive motor; 36. Screw conveyor rod; 361. Rotating shaft; 362. Screw blade; 363. Separator plate; 364. Drive wheel; 365. Drive gear ring; 366. Rotating column; 367. Agitator blade; 4. Exhaust pipe; 41. Connecting slot; 5. Filter assembly; 51. Insert mesh plate; 52. Semi-circular clamp; 53. Sealing gasket; 54. Connecting plate; 55. Connecting bolt. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 3 and Figure 4 As shown, this utility model provides a technical solution: it includes an ambient temperature vaporizer body 1, a feed pipe 2 fixedly connected to the bottom right side of the ambient temperature vaporizer body 1, an exhaust pipe 4 fixedly connected to the bottom left side of the ambient temperature vaporizer body 1, a first-stage valve provided in the middle of both the feed pipe 2 and the exhaust pipe 4, a mixing feed assembly 3 fixedly installed on the right side of the feed pipe 2, a filter assembly 5 fixedly installed on the outer surface of the exhaust pipe 4, the mixing feed assembly 3 includes a transverse feed cylinder 31, the transverse feed cylinder 31 is fixedly connected to the right side of the feed pipe 2, an insulation jacket 32 ​​is fixedly connected to the inner side of the transverse feed cylinder 31, a liquid nitrogen storage tank 33 is fixedly connected to the top right side of the outer surface of the transverse feed cylinder 31, a dry ice storage tank 34 is fixedly connected to the top center of the outer surface of the transverse feed cylinder 31, a second-stage valve is provided at the bottom of both the liquid nitrogen storage tank 33 and the dry ice storage tank 34, and a drive motor 35 is fixedly connected to the right end of the transverse feed cylinder 31. The output shaft passes through the interior of the transverse conveying cylinder 31 and is fixedly connected to a spiral conveying rod 36. The spiral conveying rod 36 includes a rotating shaft 361, which is rotatably connected to the middle of the transverse conveying cylinder 31 and its right end is fixedly connected to the output shaft of the drive motor 35. Spiral blades 362 are fixedly connected to the outer surface of the rotating shaft 361. A partition plate 363 is fixedly connected to the right end of the outer surface of the rotating shaft 361. A transmission wheel 364 is rotatably connected to the upper right side of the partition plate 363. A transmission gear ring 365 is meshed with the outer surface of the transmission wheel 364. The transmission gear ring 365 is fixedly connected to the right side of the inner surface of the transverse conveying cylinder 31. A rotating column 366 is fixedly connected to the left side of the transmission gear ring 365. The left end of the rotating column 366 passes through to the left side of the spiral blades 362. Several agitating blades 367 are fixedly connected to the outer surface of the rotating column 366. Several agitating blades 367 are respectively arranged in each gap of the spiral blades 362. The overall effect achieved in Embodiment 1 is as follows: After the drive motor 35 is turned on, the drive motor 35 drives the rotating shaft 361 and the spiral blade 362 to rotate synchronously. At this time, the second guide valve at the bottom of the liquid nitrogen storage tank 33 is opened, and liquid nitrogen falls into the right side area of ​​the transverse conveying cylinder 31. The spiral blade 362 conveys the liquid nitrogen to the left. When the liquid nitrogen is conveyed to the middle of the transverse conveying cylinder 31, the second guide valve at the bottom of the dry ice storage tank 34 is opened, and dry ice particles fall into the transverse conveying cylinder 31 and merge with the liquid nitrogen. At the same time, the rotating shaft 361 drives the partition plate 363 to rotate. The drive wheel 364 on 63 rolls along the fixed drive gear ring 365 and rotates. The drive wheel 364 drives the rotating column 366 and the stirring blade 367 to rotate in the gap of the spiral blade 362, stirring the combined liquid nitrogen and dry ice particles to prevent the dry ice particles from agglomerating. The heat insulation jacket 32 ​​inside the transverse feed cylinder 31 can reduce the heat exchange between the low temperature medium and the outside world, preventing the liquid nitrogen from vaporizing prematurely. Finally, the uniformly mixed dry ice and liquid nitrogen enter the ambient temperature vaporizer body 1 through the feed pipe 2, laying the foundation for subsequent stable vaporization.

[0019] Example 2: As Figure 2 and Figure 5 As shown, this utility model provides a technical solution: the filter assembly 5 includes a plug-in mesh plate 51, the top of the outer surface of the exhaust pipe 4 is provided with a connecting slot 41, the plug-in mesh plate 51 is slidably inserted into the inner surface of the connecting slot 41 and extends into the interior of the exhaust pipe 4, the top front and rear sides of the plug-in mesh plate 51 are rotatably connected with semi-circular clips 52, the left and right sides of the inner surface of the semi-circular clips 52 are fixedly connected with sealing gaskets 53, the bottom end of the semi-circular clips 52 is fixedly connected with a mating plate 54, and the middle of the two mating plates 54 is threadedly connected with a connecting bolt 55 that passes through from left to right; The overall effect of Embodiment 2 is as follows: Before the exhaust pipe 4 is put into operation, the insert mesh plate 51 is inserted into the exhaust pipe 4 along the connecting slot 41. The insert mesh plate 51 can intercept the incompletely vaporized dry ice solid particles in the mixture. Then, the two semi-circular clamps 52 are rotated to make the two clamps fit against the outer wall of the exhaust pipe 4. Then, the connecting bolt 55 is tightened to make the two mating plates 54 come closer to each other until the sealing gasket 53 on the inner side of the semi-circular clamps 52 fits tightly against the outer surface of the exhaust pipe 4, thereby fixing and sealing the insert mesh plate 51 and preventing the low-temperature mixture from leaking from the connecting slot 41. When it is necessary to clean the insert mesh plate 51, simply loosen the connecting bolt 55 and rotate the semi-circular clamps 52 to pull the insert mesh plate 51 out of the connecting slot 41 without disassembling the entire exhaust pipe 4, which greatly improves the convenience of maintenance.

[0020] The working principle of the entire equipment is as follows: When in use, first open the first guide valve in the middle of the feed pipe 2 and the exhaust pipe 4, then start the drive motor 35 of the mixing feed assembly 3. The drive motor 35 drives the spiral conveyor rod 36 to rotate, and sequentially open the second guide valve at the bottom of the liquid nitrogen storage tank 33 and the dry ice storage tank 34, so that the liquid nitrogen and dry ice particles are mixed in the transverse conveying cylinder 31, and then enter the ambient temperature vaporizer body 1 through the feed pipe 2. The ambient temperature vaporizer body 1 uses the heat of the ambient air to heat the mixed medium, so that the dry ice sublimates into carbon dioxide and the liquid nitrogen vaporizes into nitrogen. The resulting mixed gas is discharged through the exhaust pipe 4. During the discharge process, the plug-in mesh plate 51 of the filter assembly 5 intercepts the dry ice particles that are not completely vaporized, and the sealing gasket 53 ensures that the mixed gas does not leak, and finally realizes the mixing and vaporization of dry ice and liquid nitrogen and stable output.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dry ice-liquid nitrogen mixing and vaporization device, comprising an ambient temperature vaporizer body (1), wherein a feed pipe (2) is fixedly connected to the bottom right side of the ambient temperature vaporizer body (1), and an exhaust pipe (4) is fixedly connected to the bottom left side of the ambient temperature vaporizer body (1), and a control valve is provided in the middle of both the feed pipe (2) and the exhaust pipe (4), characterized in that: A mixing feed assembly (3) is fixedly installed on the right side of the feed pipe (2), and a filter assembly (5) is fixedly installed on the outer surface of the exhaust pipe (4). The mixing and feeding assembly (3) includes a transverse feeding cylinder (31), which is fixedly connected to the right side of the feeding pipe (2). An insulation jacket (32) is fixedly connected to the inner side of the transverse feeding cylinder (31). A liquid nitrogen storage tank (33) is fixedly connected to the top right side of the outer surface of the transverse feeding cylinder (31). A dry ice storage tank (34) is fixedly connected to the top center of the outer surface of the transverse feeding cylinder (31). A second guide valve is provided at the bottom of both the liquid nitrogen storage tank (33) and the dry ice storage tank (34). A drive motor (35) is fixedly connected to the right end of the transverse feeding cylinder (31). The output shaft of the drive motor (35) passes through the interior of the transverse feeding cylinder (31) and is fixedly connected to a spiral conveying rod (36).

2. The dry ice-liquid nitrogen mixing and vaporization device according to claim 1, characterized in that: The spiral conveyor rod (36) includes a rotating shaft (361), which is rotatably connected to the middle of the transverse conveying cylinder (31) and its right end is fixedly connected to the output shaft of the drive motor (35). The outer surface of the rotating shaft (361) is fixedly connected with a spiral blade (362).

3. The dry ice-liquid nitrogen mixing and vaporization device according to claim 2, characterized in that: A partition plate (363) is fixedly connected to the right end of the outer surface of the rotating shaft (361). A transmission wheel (364) is rotatably connected to the upper right side of the partition plate (363). A transmission gear ring (365) is meshed with the outer surface of the transmission wheel (364). The transmission gear ring (365) is fixedly connected to the right side of the inner surface of the transverse conveying cylinder (31).

4. The dry ice-liquid nitrogen mixing and vaporization device according to claim 3, characterized in that: A rotating column (366) is fixedly connected to the left side of the transmission gear ring (365). The left end of the rotating column (366) extends through to the left side of the spiral blade (362). A number of stirring blades (367) are fixedly connected to the outer surface of the rotating column (366). The number of stirring blades (367) are respectively arranged in each gap of the spiral blade (362).

5. The dry ice-liquid nitrogen mixing and vaporization device according to claim 1, characterized in that: The filter assembly (5) includes a plug-in mesh plate (51). A connection slot (41) is provided on the top of the outer surface of the exhaust pipe (4). The plug-in mesh plate (51) is slidably inserted into the inner surface of the connection slot (41) and extends into the interior of the exhaust pipe (4). Semi-circular clips (52) are rotatably connected to the front and rear sides of the top of the plug-in mesh plate (51).

6. The dry ice-liquid nitrogen mixing and vaporization device according to claim 5, characterized in that: The inner surface of the semi-circular clip (52) is fixedly connected with sealing gaskets (53) on both the left and right sides. The bottom end of the semi-circular clip (52) is fixedly connected with a mating plate (54). The middle of the two mating plates (54) is threaded with a connecting bolt (55) that passes through from left to right.

Images