High-pressure liquid nitrogen pump prying structure convenient to maintain

Abstract

The utility model relates to the technical field of high-pressure liquid nitrogen pumps, and discloses a high-pressure liquid nitrogen pump prying structure convenient to maintain, which comprises a fixed column and a connecting column, the bottom wall of the connecting column is fixedly connected with a locking shell, a sliding groove is formed in the locking shell, the middle part of the inner wall of the locking shell is rotatably connected with a threaded knob, and the threaded knob is connected with a threaded rod. The outer wall of the threaded rotary knob is in threaded connection with a clamping block, the bottom of the clamping block is in sliding connection with the sliding groove, the front side and the rear side of the fixing column are both rotationally connected with locking plates, the right sides of the tops of the two locking plates are both provided with clamping grooves, and the left end of the clamping block is clamped with the corresponding clamping grooves. According to the pump skid, the rear end of the clamping block is separated from the two clamping grooves through rotation of the threaded rotary column, the two locking plates are turned over to be separated from the locking grooves, then the connecting column is pulled, the two ends of the pump skid can be detached and maintained conveniently, and the service life of the pump skid is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure liquid nitrogen pumps, in particular to a high-pressure liquid nitrogen pump skid structure which is easy to maintain. Background Art

[0002] Nitrogen is a colorless, tasteless, and odorless gas that makes up about 78% of the atmosphere and is one of the most abundant elements in the Earth's atmosphere. This stability prevents nitrogen from chemically reacting with other substances at room temperature, so it is called an inert gas. When nitrogen is cooled below its boiling point, it condenses into liquid nitrogen. Liquid nitrogen is used as a coolant, refrigerant, and inert gas in many industrial and laboratory applications. When liquid nitrogen is pressurized, a high-pressure liquid pump is required.

[0003] A high-pressure liquid nitrogen pump is a device used to compress liquid nitrogen to high pressure. It is commonly used in industrial and laboratory applications. High-pressure liquid nitrogen pumps usually use the principle of piston or plunger compressors to compress liquid nitrogen to high pressure through mechanical movement. The piston or plunger pushes the nitrogen into the compression chamber through mechanical force and compresses it into a high-pressure state. The pry in the liquid nitrogen pump usually refers to one of the compression components of the pump, and the moving part is called the piston or plunger.

[0004] The existing pump skid is generally supported by a pry arm or a pry rod, which is used to transmit mechanical force to liquid nitrogen for compression, so it is not easy to disassemble and maintain during maintenance and inspection, which increases the production and use costs and reduces the service life of the pump skid. Therefore, a high-pressure liquid nitrogen pump skid structure that is easy to maintain is proposed. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a high-pressure liquid nitrogen pump skid structure that is easy to maintain, aiming to improve the problem.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-pressure liquid nitrogen pump pry structure that is easy to maintain, comprising a fixing column and a connecting column, the bottom wall of the connecting column is fixedly connected with a locking shell, a sliding groove is provided inside the locking shell, a threaded knob is rotatably connected to the middle part of the inner wall of the locking shell, a clamping block is threadedly connected to the outer wall of the threaded knob, the bottom of the clamping block is slidably connected to the sliding groove, the front and rear sides of the fixing column are rotatably connected with locking plates, the top right sides of the two locking plates are provided with clamping grooves, the left ends of the clamping blocks are respectively clamped with the corresponding clamping grooves, the front and rear sides of the sliding groove are provided with locking grooves, the tops of the two clamping grooves are respectively clamped with the corresponding locking grooves, and cleaning mechanisms are provided on the front and rear sides of the connecting column.

[0007] As a further description of the above technical solution:

[0008] The cleaning mechanism includes two connecting shells, adjacent sides of the two connecting shells are respectively fixedly connected to the front and rear sides of the connecting column, the inner bottom walls of the two connecting shells are fixedly connected with spring columns, the tops of the two spring columns are fixedly connected with displacement shells, the front and rear sides of the top walls of the displacement shells are provided with cleaning brushes, the top walls of the two cleaning brushes are threaded with two bolts, and the bottom walls of the two bolts are threadedly connected to the front and rear sides of the top wall of the displacement shell.

[0009] As a further description of the above technical solution:

[0010] The left and right ends of the front side of the displacement shell are both fixedly connected with sliders, the left and right ends of the front side of the connecting column are both provided with limiting grooves, and the rear sides of the two sliders are respectively slidably connected with the corresponding limiting grooves.

[0011] As a further description of the above technical solution:

[0012] The right end of the threaded knob is fixedly connected with a plurality of convex strips at equal intervals, and the outer walls of the plurality of convex strips are all square in design.

[0013] As a further description of the above technical solution:

[0014] A protective shell is arranged on the right side of the threaded knob, and the left side of the protective shell is rotatably connected to the right side of the sliding slot through a hinge.

[0015] As a further description of the above technical solution:

[0016] The middle parts of the plurality of bolts are fixedly connected with rubber pads.

[0017] As a further description of the above technical solution:

[0018] The front and rear sides of the left end of the locking block are fixedly connected with rubber sleeves, and the adjacent sides of the two rubber sleeves are provided with inclined surfaces.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the fixing column and the outer wall of the connecting column are both designed to be smooth.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the rear end of the engaging block is separated from the two engaging grooves under the limited rotation of the slide groove by rotating the threaded rotating column, thereby releasing the lock of the two locking plates. The two locking plates are separated from the locking grooves by flipping over, and then the connecting column is pulled to complete the disassembly of the connecting column and the fixed column, so that the two ends of the pump skid can be disassembled and repaired, thereby reducing the production and use costs, increasing the service life of the pump skid, and facilitating maintenance by operators.

[0023] 2. In the utility model, when the top of the pump skid is working, the connecting column and the fixed column are displaced as a whole, so that the displacement shell is blocked, and then two cleaning brushes fixed by bolts are displaced relative to the top of the connecting column, so that the top can be cleaned, reducing the impact of dirt adhesion on the work, increasing the safety and stability of the work, and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a high-pressure liquid nitrogen pump skid structure that is easy to maintain proposed by the utility model;

[0025] Figure 2 This is a structural schematic diagram of a threaded screw column of a high-pressure liquid nitrogen pump skid structure that is easy to maintain proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of a cleaning mechanism of a high-pressure liquid nitrogen pump skid structure that is easy to maintain proposed by the utility model.

[0027] Legend:

[0028] 1. Fixed column; 2. Cleaning mechanism; 201. Connecting shell; 202. Spring column; 203. Displacement shell; 204. Bolt; 205. Rubber pad; 206. Cleaning brush; 207. Limiting groove; 208. Slider; 3. Connecting column; 4. Locking shell; 5. Slide groove; 6. Threaded knob; 7. Raised strip; 8. Snap block; 9. Rubber sleeve; 10. Locking plate; 11. Snap groove; 12. Locking groove; 13. Protective shell. DETAILED DESCRIPTION

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

[0030] Reference Figure 1 and Figure 2, the utility model provides an embodiment: a high-pressure liquid nitrogen pump pry structure that is easy to maintain, including a fixed column 1 and a connecting column 3, the bottom wall of the connecting column 3 is fixedly connected with a locking shell 4, the interior of the locking shell 4 is provided with a slide groove 5, the middle part of the inner wall of the locking shell 4 is rotatably connected with a threaded knob 6, the outer wall of the threaded knob 6 is threadedly connected with a clamping block 8, the bottom of the clamping block 8 is slidably connected with the slide groove 5, the front and rear sides of the fixed column 1 are rotatably connected with locking plates 10, the top right sides of the two locking plates 10 are provided with clamping grooves 11, the left ends of the clamping blocks 8 are respectively engaged with the corresponding clamping grooves 11, the front and rear sides of the slide groove 5 are provided with locking grooves 12, the tops of the two clamping grooves 11 are respectively engaged with the corresponding locking grooves 12, and the front and rear sides of the connecting column 3 are provided with cleaning mechanisms 2;

[0031] Specifically, when the threaded screw column 6 is rotated, the locking block 8 will have a tendency to rotate and displace. However, under the limiting effect of the slide groove 5, the locking block 8 will not rotate with the threaded screw column 6, but will displace along the direction of the slide groove 5. As the locking block 8 moves to the right, its left end will gradually separate from the corresponding locking groove 11. When the locking block 8 is completely separated from the locking groove 11, the two locking plates 10 lose their original fixing function and can be turned over freely. At this time, the locking relationship between the top of the locking plate 10 and the corresponding locking groove 12 is also released, which makes the connection between the connecting column 3 and the fixing column 1 loose, and the connecting column 3 can be easily pulled to separate it from the fixing column 1. Through this mechanism design, we have realized the disassembly and maintenance of both ends of the pump skid. This design not only reduces the production and use costs and increases the service life of the pump skid, but also makes it more convenient for operators to perform maintenance.

[0032] Reference Figure 2 The right end of the threaded knob 6 is fixedly connected with a plurality of convex strips 7 at equal intervals, and the outer walls of the plurality of convex strips 7 are all designed in a square shape; the front and rear sides of the left end of the locking block 8 are fixedly connected with rubber sleeves 9, and the adjacent sides of the two rubber sleeves 9 are both provided with inclined surfaces;

[0033] Specifically, the anti-slip effect of the knob of the threaded screw column 6 is improved by the plurality of convex strips 7 , and the locking effect of the engaging block 8 is improved by the rubber sleeve 9 .

[0034] Reference Figure 1 and Figure 3 The cleaning mechanism 2 includes two connecting shells 201, and the adjacent sides of the two connecting shells 201 are respectively fixedly connected to the front and rear sides of the connecting column 3, the inner bottom walls of the two connecting shells 201 are fixedly connected with spring columns 202, the tops of the two spring columns 202 are fixedly connected with displacement shells 203, and the front and rear sides of the top wall of the displacement shell 203 are provided with cleaning brushes 206, and the top walls of the two cleaning brushes 206 are threaded with two bolts 204, and the bottom walls of the two bolts 204 are threadedly connected to the front and rear sides of the top wall of the displacement shell 203;

[0035] Specifically, the displacement shell 203 is blocked. This blocking mechanism not only ensures the stability of the displacement shell 203, but also provides a solid foundation for its subsequent movement. Two cleaning brushes 206 are fixedly installed on the connection displacement shell 203 by bolts 204. Their relative positions with the connecting column 3 change with the displacement of the pump skid. The design of this movement relationship enables the cleaning brush 206 to accurately clean the top of the connecting column 3. During the operation of the pump skid, some dirt may adhere to the top of the connecting column 3. If it is not cleaned in time, the dirt may affect the operation of the pump skid and even cause failure. Therefore, through the movement of the cleaning brush 206, the dirt can be effectively removed to ensure the normal operation of the pump skid. The movement of the cleaning brush 206 not only improves the work efficiency, but also reduces the failure rate. When the pump skid is working, since the top of the connecting column 3 is cleaned in time, the impact of dirt on the work is reduced, so that the pump skid can operate more stably and efficiently.

[0036] Reference Figure 1 , Figure 2 and Figure 3 The left and right ends of the front side of the displacement shell 203 are fixedly connected with sliders 208, and the left and right ends of the front side of the connecting column 3 are provided with limiting grooves 207, and the rear sides of the two sliders 208 are respectively slidably connected with the corresponding limiting grooves 207; the middle parts of the multiple bolts 204 are fixedly connected with rubber pads 205; the outer walls of the fixed column 1 and the outer walls of the connecting column 3 are both designed to be smooth; a protective shell 13 is provided on the right side of the threaded knob 6, and the left side of the protective shell 13 is rotatably connected to the right side of the slide groove 5 through a hinge;

[0037] Specifically, the rear sides of the two sliders 208 are slidably connected to the corresponding limiting grooves 207, so that the stability of the displacement shell 203 during displacement is improved, the rubber pad 205 reduces the rotational damage of the bolt 204 to the cleaning brush 206, and the protective shell 13 can protect the right end of the threaded screw column 6.

[0038] Working principle: When starting maintenance and disassembly, by rotating the threaded screw 6, the engaging block 8 has a tendency to rotate and move, and then under the limited rotation of the slide groove 5, the engaging block 8 will not rotate with the threaded screw 6, and then move along the direction of the slide groove 5, so that it slides to the right, so that the left end of the engaging block 8 is separated from the corresponding engaging groove 11 respectively, and then the two locking plates 10 are flipped to release the top thereof from the corresponding locking groove 12, and the connecting column 3 is pulled to separate it from the fixing column 1, so that the two ends of the pump skid can be disassembled and repaired;

[0039] And through the displacement work of the pump skid, the displacement shell 203 is blocked, so that the two cleaning brushes 206 fixed by the bolts 204 are movable relative to the connecting column 3, so that the top of the connecting column 3 can be cleaned, thereby reducing the influence of dirt adhering to the pump skid when it is working, thereby improving the working efficiency. When the pump skid retracts downward, the displacement shell 203 is reset under the reset action of the two spring columns 202.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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. A high-pressure liquid nitrogen pump skid structure that is easy to maintain, comprising a fixing column (1) and a connecting column (3), characterized in that: The bottom wall of the connecting column (3) is fixedly connected with a locking shell (4), a sliding groove (5) is provided inside the locking shell (4), a threaded knob (6) is rotatably connected to the middle part of the inner wall of the locking shell (4), a clamping block (8) is threadedly connected to the outer wall of the threaded knob (6), the bottom of the clamping block (8) is slidably connected to the sliding groove (5), the front and rear sides of the fixed column (1) are rotatably connected with locking plates (10), the top right sides of the two locking plates (10) are provided with clamping grooves (11), the left ends of the clamping blocks (8) are respectively engaged with the corresponding clamping grooves (11), the front and rear sides of the sliding groove (5) are provided with locking grooves (12), the tops of the two clamping grooves (11) are respectively engaged with the corresponding locking grooves (12), and the front and rear sides of the connecting column (3) are provided with cleaning mechanisms (2).

2. According to claim 1, a high-pressure liquid nitrogen pump skid structure that is easy to maintain, characterized in that: The cleaning mechanism (2) comprises two connecting shells (201), the adjacent sides of the two connecting shells (201) are respectively fixedly connected to the front and rear sides of the connecting column (3), the inner bottom walls of the two connecting shells (201) are fixedly connected to spring columns (202), the tops of the two spring columns (202) are fixedly connected to displacement shells (203), the front and rear sides of the top wall of the displacement shell (203) are provided with cleaning brushes (206), the top walls of the two cleaning brushes (206) are threadedly penetrated with two bolts (204), and the bottom walls of the two bolts (204) are threadedly connected to the front and rear sides of the top wall of the displacement shell (203).

3. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 2 is characterized in that: The left and right ends of the front side of the displacement shell (203) are fixedly connected with sliders (208), the left and right ends of the front side of the connection column (3) are provided with limiting grooves (207), and the rear sides of the two sliders (208) are respectively slidably connected to the corresponding limiting grooves (207).

4. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 1 is characterized in that: The right end of the threaded knob (6) is fixedly connected with a plurality of convex strips (7) at equal intervals, and the outer walls of the plurality of convex strips (7) are all of square design.

5. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 1 is characterized in that: A protective shell (13) is provided on the right side of the threaded knob (6), and the left side of the protective shell (13) is rotatably connected to the right side of the slide groove (5) via a hinge.

6. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 2 is characterized in that: The middle parts of the plurality of bolts (204) are all fixedly connected with rubber pads (205).

7. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 1 is characterized in that: The front and rear sides of the left end of the locking block (8) are fixedly connected to rubber sleeves (9), and adjacent sides of the two rubber sleeves (9) are provided with inclined surfaces.

8. The high-pressure liquid nitrogen pump skid structure that is easy to maintain according to claim 1 is characterized in that: The outer wall of the fixing column (1) and the outer wall of the connecting column (3) are both designed to be smooth.

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