Efficient and energy-saving liquid oxygen pump device

Abstract

The utility model relates to the technical field of liquid nitrogen pumps, and provides an efficient and energy-saving liquid oxygen pump device which comprises a liquid nitrogen pump body and a liquid nitrogen tank, the liquid nitrogen pump body is inserted into the top of the liquid nitrogen tank, a closed connecting assembly is arranged between the liquid nitrogen pump body and the liquid nitrogen tank, and an outlet closing assembly is arranged at the output end of the liquid nitrogen pump body. The closed connecting assembly comprises a thickening layer, the thickening layer is arranged on the periphery of the top of the liquid nitrogen tank, an inner ring groove is formed in the top of the thickening layer, and an outer ring layer is arranged at the lower end of the liquid nitrogen pump body and attached into the inner ring groove. By means of the technical scheme, the problems that in the prior art, an existing liquid nitrogen pump and a liquid nitrogen tank are connected in a threaded screwing mode, when the liquid nitrogen pump and the liquid nitrogen tank are not completely closed, liquid nitrogen continuously floats outwards, hands are frostbitten, the same situation exists at one end of an outlet, the operation efficiency is low, and waste is generated are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen pumps, and in particular to a high-efficiency and energy-saving liquid oxygen pump device. Background Art

[0002] A liquid oxygen pump is a cryogenic liquid pump used to increase the pressure of liquid oxygen for transport. It is commonly used as a liquid oxygen circulation pump in the main condenser evaporator, as a process liquid oxygen pump between parallel upper and lower towers, as a product liquid oxygen pump in internal compression processes, and as a liquid oxygen pump for storage tanks. It can be divided into two categories: centrifugal and plunger-type liquid oxygen pumps. Plunger-type pumps are generally used for pumping low-flow, high-pressure liquids. Centrifugal liquid oxygen pumps are widely used in large and medium-sized low-pressure air separation units, such as meter-hour oxygen concentrators. Centrifugal liquid oxygen pumps are further divided into single-stage and multi-stage types. A pump with a single impeller in the pump casing is called a single-stage pump; a pump with multiple impellers connected in series in the pump casing is called a multi-stage pump.

[0003] The most widely used and commonly used liquid nitrogen pumps are divided into manual and mechanical power, and most of them use mechanical power to continuously export liquid nitrogen. However, the current connection between the liquid nitrogen pump and the liquid nitrogen tank is through a threaded connection, and when it is not completely closed, the liquid nitrogen will continue to float out, which will frostbite your hands. The same situation also occurs at one end of the outlet, resulting in low operating efficiency and waste.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model provides an efficient and energy-saving liquid oxygen pump device, which solves the problem in the related art that the connection between the current liquid nitrogen pump and the liquid nitrogen tank is a screw connection through a thread, and when it is not completely closed, the liquid nitrogen will continue to float out, causing frostbite to the hands. The same problem also occurs at one end of the outlet, resulting in low operating efficiency and waste.

[0006] The technical solution of the utility model is as follows:

[0007] A liquid nitrogen pump body and a liquid nitrogen tank, wherein the liquid nitrogen pump body is inserted into the top of the liquid nitrogen tank;

[0008] A closed connection assembly, the closed connection assembly being arranged between the liquid nitrogen pump body and the liquid nitrogen tank;

[0009] An outlet sealing component, the outlet sealing component being arranged at the output end of the liquid nitrogen pump body;

[0010] The closed connection assembly includes a thickening layer, which is arranged around the top of the liquid nitrogen tank. An inner ring groove is opened on the top of the thickening layer. An outer ring layer is provided at the lower end of the liquid nitrogen pump body, and the outer ring layer is attached to the inner ring groove.

[0011] As a further technical solution, a plurality of grooves are provided around the bottom surface of the outer ring layer, a first spring is provided in the groove, and a fitting plate is provided at the lower end of the first spring, and the fitting plate is in a circular ring structure.

[0012] As a further technical solution, a pair of slots are provided on the top of the thickened layer, an inner groove is provided on the inner end surface of the slots, and a pair of rods are provided on the bottom surface of the liquid nitrogen pump body, and the rods are inserted into the slots.

[0013] As a further technical solution, a long groove is provided on the side end face of the insertion rod, a rack is provided in the long groove, a limit gear is rotatably connected in the inner groove, the limit gear is engaged with the rack, and the inner end face of the inner groove is connected to a fixing screw through threaded cooperation.

[0014] As a further technical solution, one end of the fixed screw is rotatably connected to a movable frame, the movable frame is movably connected to a limiting frame, the limiting frame is suitably connected to a pair of second springs, and the limiting frame and the movable frame both slide in contact with the inner surface of the inner groove.

[0015] As a further technical solution, the outlet sealing assembly includes a connecting sleeve, which is slidably connected to the output end of the liquid nitrogen pump body, and a pair of convex layers are provided on the inner surface of the connecting sleeve.

[0016] As a further technical solution, a docking groove is provided on the upper end surface of the connecting sleeve, a docking block is screwed into the docking groove through a thread, and the docking block is slidably sleeved on the output end of the liquid nitrogen pump body.

[0017] As a further technical solution, an inclined groove is provided on the upper end surface of the connecting sleeve, and a compression layer is provided on the lower end surface of the docking block, and the compression layer is inserted into the inclined groove.

[0018] The working principle and beneficial effects of the utility model are as follows:

[0019] 1. The utility model is provided with a closed connection assembly. Through the interaction of the inner ring groove, the outer ring layer, the bonding plate, the plug rod, the rack, the limit gear, the fixed screw and the limit frame, when the liquid nitrogen pump body is inserted into the liquid nitrogen tank, the opening part of the liquid nitrogen tank is first closed by the bonding plate, and then the operation connection is continued. During the process, there will be no leakage of liquid nitrogen gas, no frostbite to the hands during operation, and waste is avoided.

[0020] 2. The utility model is provided with an outlet closing assembly, which can fit tightly with the receiving container through the interaction of the connecting sleeve, docking groove and docking block, and can adjust the length of the output end of the liquid nitrogen pump body inserted into the container without falling off during the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Figure 1 This is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is an axonometric sectional view of the utility model;

[0024] Figure 3 This is an axonometric cross-sectional view from another perspective of the present invention;

[0025] Figure 4 For this utility model Figure 2 A partial enlarged view of part A;

[0026] Figure 5 For this utility model Figure 2 A partial enlarged view of part B;

[0027] Figure 6 For this utility model Figure 3 A partial enlarged view of part C in the middle;

[0028] In the figure: 1. Liquid nitrogen pump body; 2. Liquid nitrogen tank; 3. Closed connection assembly; 3-1. Thickening layer; 3-2. Inner ring groove; 3-3. Outer ring layer; 3-4. Groove; 3-5. First spring; 3-6. Laminating plate; 3-7. Slot; 3-8. Inner groove; 3-9. Insert rod; 3-10. Long groove; 3-11. Rack; 3-12. Limiting gear; 3-13. Fixed screw; 3-14. Moving frame; 3-15. Limiting frame; 3-16. Second spring; 4. Outlet closing assembly; 4-1. Connecting sleeve; 4-2. Convex layer; 4-3. Docking groove; 4-4. Docking block; 4-5. Inclined groove; 4-6. Compressing layer. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figures 1 to 6 As shown, this embodiment proposes a high-efficiency and energy-saving liquid oxygen pump device, including

[0031] Liquid nitrogen pump body 1 and liquid nitrogen tank 2, the liquid nitrogen pump body 1 is inserted on the top of the liquid nitrogen tank 2;

[0032] A closed connecting assembly 3 is arranged between the liquid nitrogen pump body 1 and the liquid nitrogen tank 2;

[0033] An outlet closed assembly 4 is arranged at the output end of the liquid nitrogen pump body 1.

[0034] The closed connecting assembly 3 comprises a thickened layer 3-1 arranged around the top of the liquid nitrogen tank 2, an inner ring groove 3-2 is formed at the top of the thickened layer 3-1, an outer ring layer 3-3 is arranged at the lower end of the liquid nitrogen pump body 1 and is fitted in the inner ring groove 3-2, a plurality of grooves 3-4 are formed around the bottom surface of the outer ring layer 3-3, a first spring 3-5 is arranged in the groove 3-4, a fitting plate 3-6 is arranged at the lower end of the first spring 3-5, the fitting plate 3-6 has a circular ring structure, a pair of insertion slots 3-7 are formed at the top of the thickened layer 3-1, an inner groove 3-8 is formed at the inner side end surface of the insertion slot 3-7, a pair of insertion rods 3-9 are arranged at the bottom surface of the liquid nitrogen pump body 1 and are inserted into the insertion slot 3-7, a long slot 3-10 is formed at the side end surface of the insertion rod 3-9, a rack 3-11 is arranged in the long slot 3-10, a limiting gear 3-12 is rotatably connected in the inner groove 3-8 and is engaged with the rack 3-11, a fixing screw 3-13 is threadedly connected to the inner side end surface of the inner groove 3-8, one end of the fixing screw 3-13 is rotatably connected to a moving frame 3-14, a limiting frame 3-15 is movably inserted and connected to the moving frame 3-14, a pair of second springs 3-16 are sleeved and connected to the limiting frame 3-15, and the limiting frame 3-15 and the moving frame 3-14 are slidably fitted with the inner surface of the inner groove 3-8.

[0035] In this embodiment, in order to realize the leak-proof connection effect between the liquid nitrogen pump body 1 and the liquid nitrogen tank 2, the closed connecting assembly 3 is designed, the thickened layer 3-1 is arranged at the top of the liquid nitrogen tank 2 and the inner ring groove 3-2 is formed, the inner ring layer is arranged at the lower end of the liquid nitrogen pump body 1 and is used for fitting connection with the inner ring groove 3-2, the bottom surface of the outer ring layer 3-3 is provided with the groove 3-4, the first spring 3-5 and the fitting plate 3-6, when the liquid nitrogen pump body 1 is inserted, the opening can be closed by the outer ring layer 3-3 first, and the sealing property can be increased by the fitting plate 3-6 when it is continuously inserted, the insertion slot 3-7 and the inner groove 3-8 are formed inwardly at the top of the thickened layer 3-1, the two insertion rods 3-9 are arranged at the bottom of the liquid nitrogen pump body 1 and are inserted into the insertion slot 3-7, the long slot 3-10 and the rack 3-11 are arranged on the insertion rod 3-9, the limiting gear 3-12 is rotatably connected in the inner groove 3-8, the fixing screw and the moving frame 3-14 are arranged in the inner groove 3-8, the moving frame 3-14 can be moved by screwing the fixing screw, the limiting frame 3-15 and the second spring 3-16 are inserted and connected to the moving frame 3-14, the rack 3-11, the limiting gear 3-12 and the limiting frame 3-15 are connected with each other and can limit and fix the long rod, so as to ensure that the liquid nitrogen pump body 1 is tightly connected with the liquid nitrogen tank 2.

[0036] Furthermore, the outlet closing assembly 4 includes a connecting sleeve 4-1, which is slidably mounted on the output end of the liquid nitrogen pump body 1. A pair of convex layers 4-2 are provided on the inner surface of the connecting sleeve 4-1. A docking groove 4-3 is provided on the upper end surface of the connecting sleeve 4-1. A docking block 4-4 is screwed into the docking groove 4-3 by a thread. The docking block 4-4 is slidably mounted on the output end of the liquid nitrogen pump body 1. An inclined groove 4-5 is provided on the upper end surface of the connecting sleeve 4-1. A compression layer 4-6 is provided on the lower end surface of the docking block 4-4. The compression layer 4-6 is inserted into the inclined groove 4-5.

[0037] In this embodiment, in order to achieve the effect of sealing connection of the liquid outlet end, an outlet closing component 4 is designed, and a connecting sleeve 4-1 and a docking block 4-4 are respectively provided at the output end of the liquid nitrogen pump body 1. A convex layer 4-2 is provided on the inner side of the connecting sleeve 4-1, and the convex layer 4-2 can be connected to the opening part of the container. A docking groove 4-3 and an inclined groove 4-5 are provided on the top of the connecting sleeve 4-1. The docking block 4-4 is screwed and connected in the docking groove 4-3. A compression layer 4-6 is provided at the bottom of the docking block 4-4, which can be inserted into the inclined groove 4-5. The output end of the liquid nitrogen pump body 1 can be tightened through the inclined surface as it goes deeper to avoid gaps that cause the liquid nitrogen pump body 1 to fall off.

[0038] When it is needed, insert the liquid nitrogen pump body 1 into the liquid nitrogen tank 2, press it down hard after insertion, insert the outer ring layer 3-3 and the bonding plate 3-6 into the inner ring groove 3-2, and at the same time insert the rod 3-9 into the slot 3-7, the limit gear 3-12 engages and rotates with the rack 3-11, and moves the limit frame 3-15. The limit frame 3-15 shrinks repeatedly. After it is fully inserted, screw the fixing screw 3-13, and use the moving frame 3-14 to tighten the limit frame 3-15, so that the limit gear 3-12 reaches a state where it cannot rotate, and then insert the output end of the liquid nitrogen pump body 1 into the receiving container, and tighten the connecting sleeve 4-1, and then screw the docking block 4-4 into the docking groove 4-3 to fix the connection.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency and energy-saving liquid oxygen pump device, characterized in that: include A liquid nitrogen pump body (1) and a liquid nitrogen tank (2), wherein the liquid nitrogen pump body (1) is inserted into the top of the liquid nitrogen tank (2); A closed connection assembly (3), the closed connection assembly (3) being arranged between the liquid nitrogen pump body (1) and the liquid nitrogen tank (2); An outlet sealing component (4), the outlet sealing component (4) being arranged at the output end of the liquid nitrogen pump body (1); The closed connection assembly (3) comprises a thickening layer (3-1), the thickening layer (3-1) being arranged around the top of the liquid nitrogen tank (2), an inner annular groove (3-2) being provided on the top of the thickening layer (3-1), an outer annular layer (3-3) being provided at the lower end of the liquid nitrogen pump body (1), and the outer annular layer (3-3) being fitted in the inner annular groove (3-2).

2. The high-efficiency and energy-saving liquid oxygen pump device according to claim 1, characterized in that: A plurality of grooves (3-4) are provided around the bottom surface of the outer ring layer (3-3), a first spring (3-5) is provided in the groove (3-4), a bonding plate (3-6) is provided at the lower end of the first spring (3-5), and the bonding plate (3-6) is in a circular ring structure.

3. The high-efficiency and energy-saving liquid oxygen pump device according to claim 2, characterized in that: A pair of slots (3-7) are provided on the top of the thickening layer (3-1), an inner groove (3-8) is provided on the inner end surface of the slots (3-7), and a pair of insertion rods (3-9) are provided on the bottom surface of the liquid nitrogen pump body (1), and the insertion rods (3-9) are inserted into the slots (3-7).

4. The high-efficiency and energy-saving liquid oxygen pump device according to claim 3, characterized in that: A long groove (3-10) is provided on the side end surface of the insertion rod (3-9), a rack (3-11) is provided in the long groove (3-10), a limit gear (3-12) is rotatably connected in the inner groove (3-8), the limit gear (3-12) is meshed with the rack (3-11), and a fixing screw (3-13) is connected to the inner end surface of the inner groove (3-8) through threaded engagement.

5. The high-efficiency and energy-saving liquid oxygen pump device according to claim 4, characterized in that: One end of the fixed screw rod (3-13) is rotatably connected to a movable frame (3-14); a limiting frame (3-15) is movably plugged into the movable frame (3-14); a pair of second springs (3-16) are sleevedly connected to the limiting frame (3-15); and both the limiting frame (3-15) and the movable frame (3-14) are slidably fitted with the inner surface of the inner groove (3-8).

6. The high-efficiency and energy-saving liquid oxygen pump device according to claim 1, characterized in that: The outlet sealing assembly (4) comprises a connecting sleeve (4-1), the connecting sleeve (4-1) is slidingly connected to the output end of the liquid nitrogen pump body (1), and the inner surface of the connecting sleeve (4-1) is provided with a pair of convex layers (4-2).

7. The high-efficiency and energy-saving liquid oxygen pump device according to claim 6, characterized in that: The upper end surface of the connecting sleeve (4-1) is provided with a docking groove (4-3), a docking block (4-4) is screwed into the docking groove (4-3) via a thread, and the docking block (4-4) is slidably sleeved on the output end of the liquid nitrogen pump body (1).

8. The high-efficiency and energy-saving liquid oxygen pump device according to claim 7, characterized in that: An inclined groove (4-5) is provided on the upper end surface of the connecting sleeve (4-1), and a compression layer (4-6) is provided on the lower end surface of the docking block (4-4). The compression layer (4-6) is inserted into the inclined groove (4-5).

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