Liquid nitrogen refrigerant filling bottle filtering device

Abstract

The utility model discloses a liquid nitrogen refrigerant filling bottle filtering device which comprises an outer cylinder and an inner cylinder, the inner cylinder is rotatably connected in the outer cylinder, and the side wall and the bottom surface of the outer cylinder are respectively provided with an outer side hole and an outer bottom hole. The utility model has the benefits as follows: the outer cylinder and the inner cylinder are adopted, the outer side hole and the outer bottom hole are respectively formed in the side wall and the bottom surface of the outer cylinder, the inner side hole and the inner bottom hole are respectively formed in the side wall and the bottom surface of the inner cylinder, the inner side hole corresponds to the outer side hole, and the inner bottom hole corresponds to the outer bottom hole; as the inner side hole and the outer side hole are staggered and the inner bottom hole and the outer bottom hole are staggered, impurities can become smaller through the gap, the filtering hole diameter becomes smaller, a worker can drive the top ring to rotate by rotating the handle, then the inner cylinder is driven to rotate, the positions of the inner side hole and the inner bottom hole are changed, the filtering hole diameter is changed, and then filtering adjustment is completed; the trouble of replacing a filter screen of a traditional filter structure is omitted, and the convenience of adjustment and use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen refrigerant addition, in particular to a liquid nitrogen refrigerant bottle filling and filtering device. Background Art

[0002] Liquid nitrogen, as a commonly used refrigerant, is widely used in industrial manufacturing and biological experiments, especially in IVF (in vitro fertilization) laboratories for freezing cells. In order to maintain the appropriate temperature, liquid nitrogen needs to be added frequently.

[0003] After searching, it was found that the publication number is CN212068794U, and the name is a liquid nitrogen adding device. The application proposes that in the process of repeatedly adding liquid nitrogen, some impurities (such as dust, metal debris, cut frozen carrier rods, fallen foam box slag, etc.) will accumulate, and these impurities will produce unknown toxicity to the embryos, gametes, etc. stored therein. Therefore, in the process of adding liquid nitrogen, it is necessary to avoid leakage and remove impurities in time. In order to reduce the volatilization of liquid nitrogen, the opening of the liquid nitrogen tank is usually small, which leads to the problem of inconvenient operation. Through the elongated guide tube, the smaller opening of the liquid nitrogen tank can be extended into the liquid nitrogen tank, and the liquid nitrogen can be poured from the filter cover, and then it can be introduced into the liquid nitrogen tank through the conical funnel. The guide tube extends into the inside of the liquid nitrogen tank, which can effectively avoid liquid nitrogen leakage. Moreover, when liquid nitrogen flows into the guide cover from the filter cavity, it is necessary to pass through the filter screen, so that the impurities in the liquid nitrogen can be separated and will not enter the liquid nitrogen tank. Once there are a lot of impurities attached to the filter, the filter cover can be pulled out from the guide cover and the impurities on the filter can be poured out. At this time, the relative position of the guide cover and the liquid nitrogen tank does not need to change, thereby further avoiding liquid nitrogen leakage. However, the application uses a filter as a filtering structure. Since the filter aperture of the filter cannot be adjusted, the filter needs to be replaced for impurities of different particle sizes. Replacing the filter is more troublesome, and the use of filter types is increased, which increases the cost of use. Further improvements can be made.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a liquid nitrogen refrigerant bottle filling and filtering device, which has the advantages of easy adjustment and use, stable and reliable installation, thereby solving the problems in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above advantages of convenient adjustment and stable and reliable installation, the specific technical solutions adopted by the utility model are as follows:

[0009] A liquid nitrogen refrigerant bottle filling and filtering device comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is rotatably connected inside the outer cylinder, and the outer cylinder side wall and bottom surface are respectively provided with an outer hole and an outer bottom hole, and the inner cylinder side wall and bottom surface are respectively provided with an inner hole and an inner bottom hole, the outer hole and the inner hole have the same aperture, and the outer bottom hole and the inner bottom hole have the same aperture, the outer cylinder top surface is integrally connected with a sleeve, and the sleeve top surface is provided with an annular groove, the inner cylinder top surface is integrally connected with a top ring, and the top ring bottom surface is fixedly connected with an insert ring, and the insert ring is inserted into the annular groove and rotatably connected with the annular groove.

[0010] Furthermore, a handle is fixedly connected to the top surface of the top ring, and a plurality of handles are arranged.

[0011] Furthermore, the vertical cross-sections of the annular groove and the insert ring are both convex-shaped, and the inner wall of the annular groove is roughened.

[0012] Furthermore, a clevis bolt is threadedly connected through the side wall of the sleeve, and a plurality of clevis bolts are arranged.

[0013] Furthermore, the inner wall of the outer cylinder is in contact with the outer wall of the inner cylinder, and both the outer cylinder and the inner cylinder are made of stainless steel.

[0014] Furthermore, the outer cylinder and the inner cylinder are coaxially arranged, and the inner and outer walls of the outer cylinder and the inner cylinder are polished.

[0015] Furthermore, the outer holes, inner holes, outer bottom holes and inner bottom holes are densely and evenly arranged in plurality.

[0016] Furthermore, the annular groove and the insert ring are coaxially arranged with the inner cylinder.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a liquid nitrogen refrigerant bottle filling and filtering device, which has the following beneficial effects:

[0019] (1) The utility model adopts an outer cylinder and an inner cylinder. The outer cylinder side wall and bottom surface are respectively provided with an outer hole and an outer bottom hole, while the inner cylinder side wall and bottom surface are respectively provided with an inner hole and an inner bottom hole. The inner hole is arranged corresponding to the outer hole, and the inner bottom hole is arranged corresponding to the outer bottom hole. When the inner hole is aligned with the outer hole and the inner bottom hole is aligned with the outer bottom hole, the filter aperture is the largest. With the misalignment of the inner hole and the outer hole and the misalignment of the inner bottom hole and the outer bottom hole, impurities can pass through the gap and the filter aperture becomes smaller. The staff can drive the top ring to rotate by turning the handle, thereby driving the inner cylinder to rotate to change the position of the inner hole and the inner bottom hole, change the filter aperture, and then complete the filter adjustment, eliminating the trouble of replacing the filter screen in the traditional filter structure and improving the convenience of adjustment and use.

[0020] (2) The utility model adopts a sleeve, which is integrally connected to the outer cylinder. When installing the device, the staff can put the sleeve on the top of the accommodating part, and fix it by turning the clevis bolt to tighten the outer wall of the accommodating part. After being fixed, the outer cylinder and the inner cylinder are not easy to loosen, the installation is more stable and reliable, and the disassembly is also very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the external structure of the liquid nitrogen refrigerant bottle filling and filtering device proposed by the utility model;

[0023] Figure 2 It is a structural schematic diagram of the inner cylinder proposed by the utility model;

[0024] Figure 3 It is a structural schematic diagram of the outer cylinder proposed by the utility model;

[0025] Figure 4 The utility model discloses a schematic diagram of the internal structure of a liquid nitrogen refrigerant bottle filling and filtering device.

[0026] In the figure:

[0027] 1. Outer cylinder; 2. Inner cylinder; 3. Outer hole; 4. Inner hole; 5. Outer bottom hole; 6. Inner bottom hole; 7. Sleeve; 8. Top ring; 9. Insert ring; 10. Claw bolt; 11. Handle; 12. Ring groove. DETAILED DESCRIPTION

[0028] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] According to an embodiment of the utility model, a liquid nitrogen refrigerant bottle filling and filtering device is provided.

[0030] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, according to the embodiment of the utility model, the liquid nitrogen refrigerant bottle filling and filtering device comprises an outer cylinder 1 and an inner cylinder 2, the inner cylinder 2 is rotatably connected inside the outer cylinder 1, and the side wall and bottom surface of the outer cylinder 1 are respectively provided with an outer hole 3 and an outer bottom hole 5, and the side wall and bottom surface of the inner cylinder 2 are respectively provided with an inner hole 4 and an inner bottom hole 6, the outer hole 3 and the inner hole 4 have the same aperture, the outer bottom hole 5 and the inner bottom hole 6 have the same aperture, the top surface of the outer cylinder 1 is integrally connected with a sleeve 7, and the top surface of the sleeve 7 is provided with an annular groove 12, the top surface of the inner cylinder 2 is integrally connected with a top ring 8, and the bottom surface of the top ring 8 is fixedly connected with an insert ring 9, and the insert ring 9 is inserted into the annular groove 12 and rotatably connected to the annular groove 12, the side wall and bottom surface of the outer cylinder 1 are respectively provided with an outer The inner tube 2 has an inner hole 4 and an inner bottom hole 6, and the inner hole 4 is arranged corresponding to the outer hole 3, and the inner bottom hole 6 is arranged corresponding to the outer bottom hole 5. When the inner hole 4 is aligned with the outer hole 3 and the inner bottom hole 6 is aligned with the outer bottom hole 5, the filtration aperture is the largest. With the misalignment of the inner hole 4 and the outer hole 3, and the misalignment of the inner bottom hole 6 and the outer bottom hole 5, impurities can pass through the gap and the filtration aperture becomes smaller. The staff can drive the top ring 8 to rotate by turning the handle 11, and then drive the inner tube 2 to rotate to change the positions of the inner hole 4 and the inner bottom hole 6, change the filtration aperture, and then complete the filtration adjustment, eliminating the trouble of replacing the filter screen in the traditional filtration structure and improving the convenience of adjustment and use.

[0031] In one embodiment, a handle 11 is fixedly connected to the top surface of the top ring 8 , and a plurality of handles 11 are arranged, so that the handles 11 facilitate the rotation of the inner cylinder 2 .

[0032] In one embodiment, the vertical cross-sections of the annular groove 12 and the insert ring 9 are both convex-shaped, and the inner wall of the annular groove 12 is roughened to provide friction resistance to prevent the inner cylinder 2 from rotating at will.

[0033] In one embodiment, a clevis bolt 10 is threadedly connected to the side wall of the sleeve 7, and a plurality of clevis bolts 10 are arranged. When installing the device, the staff can put the sleeve 7 on the top of the accommodating part, and fix it by rotating the clevis bolt 10 to tighten the outer wall of the accommodating part. After fixation, the outer cylinder 1 and the inner cylinder 2 are not easy to loosen, the installation is more stable and reliable, and the disassembly is also very convenient.

[0034] In one embodiment, the inner wall of the outer cylinder 1 fits with the outer wall of the inner cylinder 2, and both the outer cylinder 1 and the inner cylinder 2 are made of stainless steel, so the structure is stable and reliable.

[0035] In one embodiment, the outer cylinder 1 and the inner cylinder 2 are coaxially arranged, and the inner and outer walls of the outer cylinder 1 and the inner cylinder 2 are polished to reduce the residual liquid nitrogen adhesion.

[0036] In one embodiment, multiple outer holes 3, inner holes 4, outer bottom holes 5 and inner bottom holes 6 are densely and evenly arranged to improve filtering efficiency.

[0037] In one embodiment, the annular groove 12 and the insert ring 9 are coaxially arranged with the inner cylinder 2 to improve the stability of rotation.

[0038] Working principle:

[0039] The side wall and bottom surface of the outer cylinder 1 are respectively provided with an outer hole 3 and an outer bottom hole 5, and the side wall and bottom surface of the inner cylinder 2 are respectively provided with an inner hole 4 and an inner bottom hole 6, and the inner hole 4 is arranged corresponding to the outer hole 3, and the inner bottom hole 6 is arranged corresponding to the outer bottom hole 5. When the inner hole 4 is aligned with the outer hole 3 and the inner bottom hole 6 is aligned with the outer bottom hole 5, the filtration aperture is the largest. With the misalignment of the inner hole 4 with the outer hole 3 and the misalignment of the inner bottom hole 6 with the outer bottom hole 5, impurities can pass through the gap and the filtration aperture becomes smaller. The staff can drive the top ring 8 to rotate by turning the handle 11. , and then drive the inner cylinder 2 to rotate to change the position of the inner hole 4 and the inner bottom hole 6, change the filter aperture, and then complete the filter adjustment, eliminating the trouble of replacing the filter screen in the traditional filter structure, and improving the convenience of adjustment and use. At the same time, the sleeve 7 is integrally connected to the outer cylinder 1. When installing the device, the staff can put the sleeve 7 on the top of the accommodating part, and tighten the outer wall of the accommodating part by turning the clevis bolt 10 to complete the fixation. After fixation, the outer cylinder 1 and the inner cylinder 2 are not easy to loosen, the installation is more stable and reliable, and the disassembly is also very convenient.

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0041] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Liquid nitrogen refrigerant bottle filling and filtering device, characterized in that: The invention comprises an outer cylinder (1) and an inner cylinder (2), wherein the outer cylinder (1) is rotatably connected to the inner cylinder (2), and the side wall and bottom surface of the outer cylinder (1) are respectively provided with an outer hole (3) and an outer bottom hole (5), and the side wall and bottom surface of the inner cylinder (2) are respectively provided with an inner hole (4) and an inner bottom hole (6), wherein the outer hole (3) and the inner hole (4) have the same aperture, and the outer bottom hole (5) and the inner bottom hole (6) have the same aperture, and the top surface of the outer cylinder (1) is integrally connected to a sleeve (7), and the top surface of the sleeve (7) is provided with an annular groove (12), and the top surface of the inner cylinder (2) is integrally connected to a top ring (8), and the bottom surface of the top ring (8) is fixedly connected to an insert ring (9), and the insert ring (9) is inserted into the annular groove (12) and rotatably connected to the annular groove (12).

2. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: A handle (11) is fixedly connected to the top surface of the top ring (8), and a plurality of handles (11) are arranged.

3. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: The vertical cross-sections of the annular groove (12) and the insert ring (9) are both convex-shaped, and the inner wall of the annular groove (12) is roughened.

4. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: A clevis bolt (10) is threadedly connected through the side wall of the sleeve (7), and a plurality of clevis bolts (10) are arranged.

5. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: The inner wall of the outer cylinder (1) is in contact with the outer wall of the inner cylinder (2), and both the outer cylinder (1) and the inner cylinder (2) are made of stainless steel.

6. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: The outer cylinder (1) and the inner cylinder (2) are coaxially arranged, and the inner and outer walls of the outer cylinder (1) and the inner cylinder (2) are polished.

7. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: The outer side holes (3), the inner side holes (4), the outer bottom holes (5) and the inner bottom holes (6) are densely and evenly arranged in plurality.

8. The liquid nitrogen refrigerant bottle filling and filtering device according to claim 1, characterized in that: The annular groove (12) and the insert ring (9) are coaxially arranged with the inner cylinder (2).

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