Small portable liquid nitrogen biological sample freezing device
Through the design of the placing cylinder and clamp structure, the problem of shaking and collision of biological sample containers in the refrigeration device is solved, and the stable fixation of the sample and the sealing of the device are achieved, ensuring the safety and integrity of the sample.
Patent Information
- Application Number
- CN202422273006.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing small portable liquid nitrogen biological sample refrigeration device lacks sufficient fixed structure, which leads to shaking and collision in the biological sample container during transportation, affecting the safety and integrity of the sample.
The placement cylinder and clamp structure are adopted, and the combined design of the movable rod, pulling block and return spring is designed to achieve tight fixation of the biological sample container, and the sealing and stability of the device are ensured through the spiral texture and sealing gasket structure.
It effectively reduces the movement and collision of biological sample containers during freezing and transportation, protects sample integrity, and ensures the sealing of the device, prevents liquid nitrogen leakage and external pollutants from entering, making the operation simple and fast.
Smart Images
Figure CN223169015U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of biological samples, in particular to a small portable liquid nitrogen biological sample freezing device. Background Art
[0002] A small portable liquid nitrogen biological sample freezing device is a small device specifically used for preserving biological samples (such as cells, tissues, blood, etc.) in the fields of laboratories, medicine, and research. Such devices usually use liquid nitrogen as a cooling medium and can preserve biological samples at an extremely low temperature of -196°C for a long time to ensure their biological activity.
[0003] However, the existing small portable liquid nitrogen biological sample freezing devices usually lack sufficient fixing structures in design. As a result, when the biological sample containers are placed inside the freezing device, due to the lack of effective fixing devices, these containers may shake inside the freezing device. Especially during transportation, when personnel carry the freezing device, the containers may collide with the inner wall of the device due to vibration or instability. Such collisions may not only cause physical damage to the biological sample containers but also affect the safety and integrity of the biological samples. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the problem that the existing technology usually lacks sufficient fixing structures, resulting in the situation that when biological sample containers are placed inside the freezing device, especially during transportation, when personnel carry the freezing device, the containers may collide with the inner wall of the device due to vibration or instability.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A small portable liquid nitrogen biological sample freezing device, including a device body. A placement cylinder is fixedly embedded inside the device body. Moving rods are movably embedded on both sides inside the placement cylinder. Pulling blocks are fixedly installed on the outer sides of the two moving rods. Sealing rings are fixedly embedded on both sides inside the device body. The outer surfaces of the two moving rods are movably embedded inside the sealing rings. First return springs are fixedly installed on the opposite sides of the two pulling blocks. The inner surfaces of the two first return springs are movably sleeved on the outer surfaces of the moving rods. The other ends of the two first return springs are fixedly installed on the outer surface of the device body. Clamping plates are fixedly installed on the opposite sides of the two moving rods. Rubber soft pads are fixedly installed on the inner sides of the two clamping plates.
[0006] As a preferred implementation, a plurality of notches are opened inside the placement cylinder, and a feeding pipeline is fixedly embedded on the front side inside the device body.
[0007] The technical effect of adopting the above further solution is that the cold air generated by liquid nitrogen can enter the interior of the placement cylinder through the notch to freeze the biological sample.
[0008] As a preferred embodiment, a first one-way valve is fixedly installed inside the feed pipe, and a discharge pipe is fixedly installed at the bottom of the device body.
[0009] The technical effect of adopting the above further solution is that the first one-way valve can be opened, and liquid ammonia can be injected into the interior of the device body through the feed pipe.
[0010] As a preferred embodiment, a second one-way valve is fixedly installed inside the discharge pipe, and a threaded groove is formed on the outer surface of the top of the device body.
[0011] The technical effect of adopting the above further solution is that the second one-way valve can be opened, and the liquid nitrogen inside the device body can flow out of the interior of the device body through the discharge pipe.
[0012] As a preferred embodiment, a cylinder cover is movably sleeved on the top of the device body, and spiral threads are provided on the inner wall of the cylinder cover.
[0013] The technical effect of adopting the above further solution is that the cylinder cover can be picked up and placed on the top of the device body.
[0014] As a preferred embodiment, the spiral threads match the threaded groove, and a sealing gasket is fixedly installed on the top side of the inner wall of the cylinder cover.
[0015] The technical effect of adopting the above further solution is that the cylinder cover can be rotated so that the spiral threads are embedded into the interior of the threaded groove.
[0016] As a preferred embodiment, a telescopic rod is fixedly installed at the center of the top side of the inner wall of the cylinder cover, and a second return spring is fixedly installed on the top side of the inner wall of the cylinder cover.
[0017] The technical effect of adopting the above further solution is that the second return spring and the telescopic rod can be upwardly squeezed by the fixing plate to cause them to contract.
[0018] As a preferred embodiment, the inner surface of the second return spring is movably sleeved on the outer surface of the telescopic rod, and a fixing plate is fixedly installed at the other ends of the second return spring and the telescopic rod.
[0019] The technical effect of adopting the above further solution is that when the cylinder cover slides down to a certain extent, the top of the device body will be in contact with the bottom of the sealing gasket, thereby closing the device body.
[0020] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.
[0021] 1. In the present utility model, during use, through the arrangement of the placement cylinder and the clamping plate structure, not only can the biological sample container be tightly fixed, reducing possible movement and collision during freezing and transportation and protecting the integrity of the sample, but also the operator only needs to pull the pulling block outward to easily place or remove the biological sample container, with simple and quick operation, solving the problem in the prior art that there is usually a lack of sufficient fixing structure, resulting in the biological sample container colliding with the inner wall of the device when placed inside the freezing device, especially during transportation when the operator carries the freezing device, due to vibration or instability.
[0022] 2. In the present utility model, during use, through the arrangement of the fixing plate and the sealing gasket structure, not only can the device body be completely sealed by screwing into the thread groove through the spiral thread and the fitting of the sealing gasket with the top of the device body, preventing liquid nitrogen leakage and entry of external pollutants, but also the top of the biological sample container can be further fixed through the fixing plate, increasing the stability of the container. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is the rear three-dimensional structure schematic diagram of the small portable liquid nitrogen biological sample freezing device provided by the present utility model;
[0024] Figure 2 is the sectional three-dimensional structure schematic diagram of the device body of the small portable liquid nitrogen biological sample freezing device provided by the present utility model Figure 1 ;
[0025] Figure 3 is the sectional three-dimensional structure schematic diagram of the device body of the small portable liquid nitrogen biological sample freezing device provided by the present utility model Figure 2 ;
[0026] Figure 4 is the sectional three-dimensional structure schematic diagram of the cylinder cover of the small portable liquid nitrogen biological sample freezing device provided by the present utility model;
[0027] Figure 5 is the left three-dimensional structure schematic diagram of the small portable liquid nitrogen biological sample freezing device provided by the present utility model.
[0028] LEGEND DESCRIPTION:
[0029] 1. Device body; 101. Placing cylinder; 102. Movable rod; 103. Sealing ring; 104. Pulling block; 105. First return spring; 106. Clamping plate; 107. Rubber soft pad; 108. Notch; 109. Feeding pipe; 110. First one-way valve; 111. Discharging pipe; 112. Second one-way valve; 2. Thread groove; 201. Cylinder cover; 202. Thread; 203. Sealing gasket; 204. Telescopic rod; 205. Second return spring; 206. Fixed plate. Detailed implementation mode
[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0031] Example 1, please refer to Figures 1 to 5 , the present invention provides a technical solution: a small portable liquid nitrogen biological sample freezing device, including a device body 1, a placing cylinder 101 is fixedly embedded inside the device body 1, movable rods 102 are movably embedded on both sides inside the placing cylinder 101, pulling blocks 104 are fixedly installed on the outer sides of the two movable rods 102, sealing rings 103 are fixedly embedded on both sides inside the device body 1, the outer surfaces of the two movable rods 102 are movably embedded inside the sealing rings 103, first return springs 105 are fixedly installed on the opposite sides of the two pulling blocks 104, the inner surfaces of the two first return springs 105 are movably sleeved on the outer surfaces of the movable rods 102, the other ends of the two first return springs 105 are fixedly installed on the outer surface of the device body 1, clamping plates 106 are fixedly installed on the opposite sides of the two movable rods 102, rubber soft pads 107 are fixedly installed on the inner sides of the two clamping plates 106, a plurality of notches 108 are opened inside the placing cylinder 101, a feeding pipe 109 is fixedly embedded on the front side inside the device body 1, a first one-way valve 110 is fixedly installed inside the feeding pipe 109, a discharging pipe 111 is fixedly installed at the bottom of the device body 1, a second one-way valve 112 is fixedly installed inside the discharging pipe 111, and a thread groove 2 is opened on the outer surface of the top of the device body 1.
[0032] In this embodiment, the staff can first pull the pull block 104 outward, driving the first return spring 105 to extend. When the pull block 104 moves outward, it can drive the movable rod 102 to slide outward inside the sealing ring 103. At the same time, the clamping plate 106 and the rubber soft pad 107 are driven by the movable rod 102 to slide outward synchronously. Then the staff picks up the biological sample container and places it inside the placing cylinder 101. After that, the staff releases the pull block 104, causing the first return spring 105 to reset, and the pull block 104 pushes the movable rod 102 to move inward. When the movable rod 102 moves, it can drive the rubber soft pad 107 to slide inward synchronously through the clamping plate 106, so that the rubber soft pad 107 can fit the outer surface of the biological sample container and clamp and fix it. After the biological sample container is fixed, the cylinder cover 201 can be covered on the top of the device body 1, and the first one-way valve 110 is opened. Liquid ammonia is injected into the inside of the device body 1 through the feed pipe 109, so that the cold air generated by the liquid nitrogen can enter the inside of the placing cylinder 101 through the notch 108 to freeze the biological sample. When the device body 1 is used up, the staff can open the second one-way valve 112 to make the liquid nitrogen inside the device body 1 flow out of the inside of the device body 1 through the discharge pipe 111. And through the settings of the placing cylinder 101 and the clamping plate 106 structure, not only can the biological sample container be tightly fixed, reducing possible movement and collision during freezing and transportation and protecting the integrity of the sample, but also the staff only needs to pull the pull block 104 outward to easily place or take out the biological sample container, and the operation is simple and fast.
[0033] Embodiment 2, as Figures 1 to 5 shown, a cylinder cover 201 is movably sleeved on the top of the device body 1. The inner wall of the cylinder cover 201 is provided with a spiral thread 202, and the spiral thread 202 matches the thread groove 2. A sealing gasket 203 is fixedly installed on the top side of the inner wall of the cylinder cover 201. A telescopic rod 204 is fixedly installed at the center of the top side of the inner wall of the cylinder cover 201. A second return spring 205 is fixedly installed on the top side of the inner wall of the cylinder cover 201. The inner surface of the second return spring 205 is movably sleeved on the outer surface of the telescopic rod 204. The other end of the second return spring 205 and the telescopic rod 204 are fixedly installed with a fixing plate 206.
[0034] In this embodiment, after the biological sample container is fixed, the staff can pick up the cylinder cover 201 and place it on the top of the device body 1. Then, rotate the cylinder cover 201 so that the spiral thread 202 is embedded into the internal thread groove 2, and at the same time, the cylinder cover 201 slides downward on the outer surface of the device body 1, driving the fixing plate 206 to fit against the top of the biological sample container. Then, continue to rotate the cylinder cover 201, and upwardly squeeze the second return spring 205 and the telescopic rod 204 through the fixing plate 206 to make them contract. When the cylinder cover 201 slides down to a certain extent, the top of the device body 1 will fit against the bottom of the sealing gasket 203, thereby closing the device body 1. And through the settings of the fixing plate 206 and the sealing gasket 203 structure, not only can the spiral thread 202 be embedded into the thread groove 2 and the sealing gasket 203 fit against the top of the device body 1 to ensure the complete sealing of the device body 1, prevent liquid nitrogen leakage and entry of external pollutants, but also through the fixing plate 206, the top of the biological sample container can be further fixed, increasing the stability of the container.
[0035] Working principle: During use, the staff can first pull the pull block 104 outward, driving the first return spring 105 to extend. When the pull block 104 moves outward, it can drive the movable rod 102 to slide outward inside the sealing ring 103. At the same time, the clamping plate 106 and the rubber soft pad 107 are driven by the movable rod 102 to slide outward synchronously. Then the staff picks up the biological sample container and places it inside the placing cylinder 101. After that, the staff releases the pull block 104, causing the first return spring 105 to reset and pushing the movable rod 102 to move inward through the pull block 104. When the movable rod 102 moves, it can drive the rubber soft pad 107 to slide inward synchronously through the clamping plate 106, so that the rubber soft pad 107 can fit the outer surface of the biological sample container and clamp and fix it. After the biological sample container is fixed, the cylinder cover 201 can be covered on the top of the device body 1, and the first one-way valve 110 is opened. Liquid ammonia is injected into the inside of the device body 1 through the feed pipe 109, so that the cold air generated by the liquid nitrogen can enter the placing cylinder 101 through the notch 108 to freeze the biological sample. When the device body 1 is used up, the staff can open the second one-way valve 112, so that the liquid nitrogen inside the device body 1 flows out of the device body 1 through the discharge pipe 111. And due to the settings of the placing cylinder 101 and the clamping plate 106 structure, it can not only tightly fix the biological sample container, reduce possible movement and collision during freezing and transportation, and protect the integrity of the sample, but also the staff can easily place or take out the biological sample container by only pulling the pull block 104 outward, and the operation is simple and fast. During use, after the biological sample container is fixed, the staff can pick up the cylinder cover 201 and place it on the top of the device body 1. Then rotate the cylinder cover 201 so that the spiral thread 202 is embedded into the thread groove 2. At the same time, the cylinder cover 201 slides downward on the outer surface of the device body 1 and drives the fixed plate 206 to fit the top of the biological sample container. Then continue to rotate the cylinder cover 201, and the second return spring 205 and the telescopic rod 204 are squeezed upward by the fixed plate 206 and contract. When the cylinder cover 201 slides down to a certain extent, the top of the device body 1 will fit the bottom of the sealing gasket 203, thereby closing the device body 1. And due to the settings of the fixed plate 206 and the sealing gasket 203 structure, not only can the device body 1 be completely sealed by the spiral thread 202 being embedded into the thread groove 2 and the sealing gasket 203 fitting the top of the device body 1 to prevent liquid nitrogen leakage and external pollutants from entering, but also the top of the biological sample container can be further fixed by the fixed plate 206, increasing the stability of the container.
[0036] The above are only the preferred embodiments of the present utility model, and do not limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to 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 content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims
1. A small portable liquid nitrogen biological sample freezing device, comprising a device body (1), characterized in that: Inside the device body (1), a placement cylinder (101) is fixedly embedded. On both sides inside the placement cylinder (101), movable rods (102) are movably embedded. On the outer sides of both movable rods (102), pulling blocks (104) are fixedly installed. On both sides inside the device body (1), sealing rings (103) are fixedly embedded. The outer surfaces of both movable rods (102) are movably embedded inside the sealing rings (103). On the opposite sides of both pulling blocks (104), first return springs (105) are fixedly installed. The inner surfaces of both first return springs (105) are movably sleeved on the outer surfaces of the movable rods (102). The other ends of both first return springs (105) are fixedly installed on the outer surface of the device body (1). On the opposite sides of both movable rods (102), clamping plates (106) are fixedly installed. On the inner sides of both clamping plates (106), rubber soft pads (107) are fixedly installed.
2. The small portable liquid nitrogen biological sample freezing device according to claim 1, wherein: Inside the placement cylinder (101), a plurality of notches (108) are formed. On the front side inside the device body (1), a feed pipe (109) is fixedly embedded.
3. The small portable liquid nitrogen biological sample freezing device according to claim 2, wherein: Inside the feed pipe (109), a first one-way valve (110) is fixedly installed. At the bottom of the device body (1), a discharge pipe (111) is fixedly installed.
4. The small portable liquid nitrogen biological sample freezing device according to claim 3, wherein: Inside the discharge pipe (111), a second one-way valve (112) is fixedly installed. On the outer surface of the top of the device body (1), a threaded groove (2) is formed.
5. The small portable liquid nitrogen biological sample freezing device according to claim 4, characterized in that: On the top of the device body (1), a cylinder cover (201) is movably sleeved. On the inner wall of the cylinder cover (201), a spiral thread (202) is provided.
6. The small portable liquid nitrogen biological sample freezing device according to claim 5, wherein: The spiral thread (202) is matched with the threaded groove (2). On the top side of the inner wall of the cylinder cover (201), a sealing pad (203) is fixedly installed.
7. The small portable liquid nitrogen biological sample freezing device according to claim 6, characterized in that: At the center of the top side of the inner wall of the cylinder cover (201), a telescopic rod (204) is fixedly installed. On the top side of the inner wall of the cylinder cover (201), a second return spring (205) is fixedly installed.
8. The small portable liquid nitrogen biological sample freezing device according to claim 7, wherein: The inner surface of the second return spring (205) is movably sleeved on the outer surface of the telescopic rod (204). The other ends of the second return spring (205) and the telescopic rod (204) are fixedly installed with a fixing plate (206).