A tank gassing device

Abstract

The present application relates to oil pressure device technical field, especially an oil tank air supplementing device, which comprises a gas pipe assembly, the gas pipe assembly comprises a main pipe, a branch pipe arranged on the top of the main pipe and an electromagnetic valve arranged on the outer wall of the branch pipe; an outer shell assembly arranged on the side of the main pipe, the main pipe and the outer shell assembly are communicated; and a filter assembly arranged in the outer shell assembly, one end of the main pipe is connected with an air compressor, the air compressor draws air into the outer shell assembly from the main pipe, when the filter assembly is used for a period of time and the surface area accumulates dust to affect the filtering effect, the filter assembly can be rotated, the standby filter screen in the filter assembly will be rotated to the lower part of the middle shell to filter the air, and the filter screen which accumulates dust will be rotated to the upper part of the middle shell, at this time, the electromagnetic valve controls the branch pipe to communicate with the main pipe, the air compressor draws air, and part of the air will enter the upper part of the middle shell from the branch pipe to clean the filter screen which accumulates dust.

Description

Technical Field

[0001] This invention relates to the field of hydraulic device technology, and in particular to an oil tank air replenishment device. Background Technology

[0002] Hydraulic systems are crucial auxiliary equipment in hydropower stations and factories. Their function is to store and continuously supply operating oil that meets quality requirements to the speed control system, enabling operations such as unit startup, shutdown, and automatic load adjustment. When the pressure in the hydraulic oil tank drops to a specified value due to oil supply issues, an automatic air replenishment device is needed to maintain the hydraulic oil pressure. This replenishment requires specific equipment. Currently, such equipment mainly consists of an air compressor and air replenishment pipes. During operation, the air compressor delivers air to the hydraulic oil tank through the air replenishment pipes. However, the air entering the air compressor primarily comes from the outside environment, which, especially the air surrounding the factory, contains a large amount of particulate matter (such as dust). If this particulate matter is discharged into the hydraulic oil tank along with the air, it can easily accumulate inside the tank and pipes, affecting the quality of the oil and potentially causing malfunctions in equipment such as the solenoid valves used in the air replenishment system.

[0003] Therefore, the air must be filtered before the air compressor draws air into the oil tank. However, the air filter needs to be cleaned frequently to remove the dust accumulated on the filter screen. Cleaning the filter screen often requires disassembling the structure, which is quite troublesome. In addition, the filter screen needs to be replaced after a period of use. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an oil tank gas replenishment device, comprising a gas pipe assembly, the gas pipe assembly including a main pipe, a branch pipe disposed at the top of the main pipe, and a solenoid valve disposed on the outer wall of the branch pipe; and,

[0006] A housing assembly disposed on the side of the main tube, the main tube being connected to the housing assembly; and...

[0007] A filter assembly disposed inside the housing assembly;

[0008] The outer casing assembly has an inflation tube at the end furthest from the main pipe, the branch pipe is connected to the main pipe, the solenoid valve controls the connection and disconnection between the branch pipe and the main pipe, the top of the outer casing assembly is connected to the branch pipe, and the bottom of the outer casing assembly is connected to the main pipe.

[0009] In a preferred embodiment of the oil tank gas replenishment device of the present invention, the outer shell assembly includes an intermediate shell, an arc-shaped retaining ring is provided on the side of the intermediate shell, a through side plate is provided on the side of the arc-shaped retaining ring, and a through hole is provided at the center of the through side plate.

[0010] As a preferred embodiment of the oil tank gas replenishment device of the present invention, wherein: an ash outlet shell is provided at one end of the intermediate shell, an ash collection box is provided on the side of the ash outlet shell, a half-cover box is provided on the side of the ash outlet box near the intermediate box, and a half-stop ring is provided on the side of the half-cover box.

[0011] As a preferred embodiment of the oil tank gas replenishment device of the present invention, a sliding side plate is provided on the side of the intermediate shell away from the through side plate, and a circular slide rail is provided on the side of the sliding side plate.

[0012] In a preferred embodiment of the oil tank gas replenishment device of the present invention, a middle plate is provided on the side of the sliding side plate, a connecting column is provided on the top of the middle plate, a fan blade is provided on the top of the connecting column, and a magnet is provided at one end of the fan blade through the shaft of the connecting column.

[0013] In a preferred embodiment of the oil tank gas replenishment device of the present invention, the filter assembly includes a filter plate structure disposed inside the intermediate shell, and a rotating wheel is disposed on the side of the filter plate structure. The shaft of the rotating wheel penetrates through the through hole of the side plate and is connected to the filter plate structure.

[0014] In a preferred embodiment of the oil tank gas replenishment device of the present invention, the filter plate structure includes an intermediate frame, and filter frames are provided at the top and bottom of the intermediate frame, and a T-shaped slider is provided at the top of the filter frame.

[0015] In a preferred embodiment of the oil tank gas replenishment device of the present invention, the inner wall of the filter frame is provided with an arc-shaped filter plate, and a magnetic block is provided on the side of the filter frame away from the arc-shaped filter plate.

[0016] In a preferred embodiment of the oil tank gas replenishment device of the present invention, square grooves are provided at both ends of the top of the filter frame, a pressure strip is provided at the top of the filter frame, and square keys are provided at both ends of the bottom of the pressure strip.

[0017] As a preferred embodiment of the oil tank gas replenishment device of the present invention, wherein: a telescopic column is provided on the side of the filter frame, an elastic element is provided on the inner wall of the telescopic column, a fixed column is provided at the end of the elastic element away from the filter frame, and the bottom of the fixed column is connected to the intermediate frame.

[0018] The beneficial effects of this invention are as follows: the air drawn by the air compressor enters the outer casing assembly from the main pipe, and after being filtered by the filter assembly, the air is filled into the oil tank through the air filling pipe. When the filter assembly has been used for a period of time and dust accumulates on its surface, affecting the filtration effect, the filter assembly can be rotated to clean the dust-accumulated filter screen with air, thus cleaning the dust. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the tracheal assembly in this invention.

[0022] Figure 3 This is a schematic diagram of the outer casing assembly in this invention.

[0023] Figure 4 This is a schematic diagram of the structure of the intermediate plate in this invention.

[0024] Figure 5 This is a schematic diagram of the structure of the filter component in this invention.

[0025] Figure 6 This is a schematic diagram of the filter plate structure in this invention. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figures 1-2 This is the first embodiment of the present invention, which provides an oil tank air replenishment device, including an air pipe assembly 100, the air pipe assembly 100 including a main pipe 101, a branch pipe 102 disposed at the top of the main pipe 101 and a solenoid valve 103 disposed on the outer wall of the branch pipe 102; and a housing assembly 200 disposed on the side of the main pipe 101, the main pipe 101 being connected to the housing assembly 200; and a filter assembly 300 disposed inside the housing assembly 200, one end of the main pipe 101 being externally connected to an air compressor, the air compressor drawing air from the main pipe 101 into the housing assembly 200, where the filter assembly 300 filters the air.

[0031] The outer casing assembly 200 has an inflation pipe 104 at the end furthest from the main pipe 101, which connects to the oil tank to be inflated. A branch pipe 102 is connected to the main pipe 101. A solenoid valve 103 controls the connection and disconnection between the branch pipe 102 and the main pipe 101. The top of the outer casing assembly 200 is connected to the branch pipe 102, and the bottom is connected to the main pipe 101. During normal inflation of the oil tank, the solenoid valve 103 closes the connection between the branch pipe 102 and the main pipe 101. Air drawn from the air compressor enters the outer casing assembly 200 from the main pipe 101 and is filtered by the filter assembly 300 within the outer casing assembly 200. The filtered air then enters the oil tank through the inflation pipe 104. When the filter assembly 300 has been used for a period of time and dust accumulates on its surface, affecting the filtration effect, the filter assembly 300 can be rotated. The spare filter screen in the filter assembly 300 will rotate to the lower part of the intermediate shell 201 to filter the air, while the filter screen with accumulated dust will rotate to the upper part of the intermediate shell 201. At this time, the solenoid valve 103 controls the branch pipe 102 to connect with the main pipe 101. Some of the air drawn in by the air compressor will enter the upper part of the intermediate shell 201 from the branch pipe 102 to clean the filter screen with accumulated dust. The dust will be cleaned so that it can be used next time. When cleaning the filter screen with accumulated dust, the spare filter screen will be put into use without affecting the use of the air replenishment device.

[0032] During operation, the solenoid valve 103 controls the connection between the branch pipe 102 and the main pipe 101 to close. The air compressor draws air from the main pipe 101 into the housing assembly 200, where it is filtered by the filter assembly 300. After filtration, the air is charged into the oil tank through the inflation pipe 104. When the filter assembly 300 has been used for a period of time and dust accumulates on its surface, affecting the filtration effect, the filter assembly 300 can be rotated. The spare filter screen in the filter assembly 300 will rotate to the lower part of the intermediate housing 201 to filter the air, while the filter screen with accumulated dust will rotate to the upper part of the intermediate housing 201. At this time, the solenoid valve 103 controls the connection between the branch pipe 102 and the main pipe 101. Some of the air drawn in by the air compressor will enter the upper part of the intermediate housing 201 from the branch pipe 102 to clean the filter screen with accumulated dust, thus cleaning the dust.

[0033] Example 2

[0034] Reference Figures 1-6 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the outer shell assembly 200 includes an intermediate shell 201, a through side plate 203 is provided on the side of the arc-shaped baffle ring 202, a through hole 204 is opened at the center of the through side plate 203, an ash discharge shell 205 is provided at one end of the intermediate shell 201, an ash collection box 206 is provided on the side of the ash discharge shell 205, the ash collection box 206 is designed with a small opening and a large bottom, and multiple small holes are opened on the side of the ash collection box 206 away from the intermediate shell 201. The dust is discharged from the intermediate shell 201 and then collected in the ash collection box 206. A half-lid box 207 is provided on the side of the ash discharge box near the intermediate box.

[0035] Furthermore, a sliding side plate 209 is provided on the side of the intermediate shell 201 away from the through side plate 203. A circular slide rail 210 is provided on the side of the sliding side plate 209. An intermediate plate 211 is provided on the side of the sliding side plate 209. A connecting post 212 is provided on the top of the intermediate plate 211. A fan blade 213 is provided on the top of the connecting post 212. A magnet block 214 is provided at one end of the shaft of the fan blade 213 that passes through the connecting post 212. There are two or more magnet blocks 214, which are evenly arranged in a circle at one end of the shaft of the fan blade 213 that passes through the connecting post 212. Adjacent magnet blocks 214 are configured with different magnetic poles. At the end near the filter frame 301b, they are arranged with positive and negative poles alternately.

[0036] Furthermore, the filter assembly 300 includes a filter plate structure 301 disposed inside the intermediate shell 201. A rotating wheel 302 is disposed on the side of the filter plate structure 301. The shaft of the rotating wheel 302 penetrates through the through hole 204 of the side plate 203 and is connected to the filter plate structure 301.

[0037] Furthermore, the filter plate structure 301 includes an intermediate frame 301a. A slider is provided on the side of the intermediate frame 301a. The slider slides within a circular slide rail 210, which provides support to ensure that the intermediate frame 301a rotates smoothly within the intermediate shell 201. Filter frames 301b are provided at the top and bottom of the intermediate frame 301a. The filter frames 301b at the top and bottom of the intermediate frame 301a are centrally symmetrical about the center of the intermediate frame 301a. A T-shaped slider 301e is provided at the top of the filter frame 301b. A T-shaped groove is provided on the surface of the intermediate frame 301a that contacts the filter frame 301b. The filter frame 301b can slide on the intermediate frame 301a via the T-shaped slider 301e.

[0038] Furthermore, the inner wall of the filter frame 301b is provided with an arc-shaped filter plate 301c. A magnetic block 301d is provided on the side of the filter frame 301b away from the arc-shaped filter plate 301c. The magnetic block 301d is located on the opposite side of the arc-shaped filter plate 301c on the filter frame 301b. A telescopic column 301i is provided on the side of the filter frame 301b. An elastic element 301j is provided on the inner wall of the telescopic column 301i. A fixed column 301k is provided at the end of the elastic element 301j away from the filter frame 301b. The bottom of the fixed column 301k is connected to the intermediate frame 301a. When the solenoid valve 103 controls the branch pipe 102 to connect with the main pipe 101, air enters the upper part of the intermediate shell 201 from the branch pipe 102. The air drives the fan blade 213 to rotate, which in turn drives the magnetic block 214 at the end of the fan blade 213 shaft near the filter frame 301b to rotate. Because the magnetic block 214 is arranged with positive and negative poles alternately, when it is different from the magnetic block 301d... When the magnetic block 214 of the magnetic pole and the magnetic block 301d on the surface of the filter frame 301b are on the same horizontal plane, the magnetic block 214 on the shaft of the fan blade 213 will attract the magnetic block 301d, causing the filter frame 301b to slide towards the connecting post 212. At this time, the elastic element 301j is compressed, and the shaft of the fan blade 213 continues to rotate. The magnetic block 214 with the same magnetic pole as the magnetic block 301d will be on the same horizontal plane as the magnetic block 301d. The magnetic block 301d will be subjected to the repulsive force of the magnetic block 214. Under the action of the elastic element 301j and the repulsive force of the magnetic block 214, the filter frame 301b will slide away from the connecting post 212. The fan blade 213 rotates continuously under the action of the air, which will drive the filter frame 301b to slide back and forth, shaking off the dust on the arc-shaped filter plate 301c inside the filter frame 301b. The shaken-off dust is blown out by the air and discharged from the dust outlet shell 205 into the dust collection box 206 to complete the dust collection.

[0039] When magnetic block 301d and magnetic block 214 are on the same horizontal plane, the magnetic force between the magnets can be approximately calculated using the following formula:

[0040]

[0041] In this formula,

[0042] (F) represents magnetic force;

[0043] (μ0) is the permeability in vacuum, taken as (4π×10⁻⁶). -7 (T·m / A);

[0044] (m2) and (m2) are the magnetic moments of the two magnets. Based on the magnetism and magnitude of the magnets, we take (5×10) as the magnetic moments. -2 , T·m 2 );

[0045] (r) is the distance between the two magnets, approximately (5 × 10⁻⁶). -2 (m).

[0046] The magnetic force between the two magnets can be approximated as 50N.

[0047] The spring is compressed to a length of 1 cm, and the resulting elastic force is 10 N.

[0048] That is, the horizontal distance between magnetic block 301d and magnetic block 214 is about 5cm. When magnetic block 301d and magnetic block 214 are on the same horizontal plane, a magnetic force of about 50N will be generated between them. Under the action of the magnetic force, magnetic block 301d will drive the filter frame 301b to slide. When magnetic block 301d and magnetic block 214 are not on the same horizontal plane, the overlap of the magnetic fields between the two magnets will decrease, and the distance between the two magnets will increase, and the magnetic force will be greatly weakened.

[0049] During operation, solenoid valve 103 controls the connection between branch pipe 102 and main pipe 101 to close. Air from the air compressor enters the lower part of intermediate housing 201 from the main pipe 101. The filter frame 301b at the bottom of intermediate housing 201 filters the air through arc-shaped filter plate 301c. The filtered air then fills the oil tank through the inflation pipe 104. When the arc-shaped filter plate 301c at the bottom of intermediate housing 201 accumulates a large amount of dust after a period of use, affecting the filtration effect, rotating wheel 302 drives the intermediate frame 301a to rotate 180 degrees, placing it in the middle... The used arc-shaped filter plate 301c at the lower part of the intermediate shell 201 and the cleaned arc-shaped filter plate 301c at the upper part of the intermediate shell 201 will swap positions. The used arc-shaped filter plate 301c rotates to the upper part of the intermediate shell 201. The solenoid valve 103 controls the branch pipe 102 to connect with the main pipe 101. Air enters the upper part of the intermediate shell 201 from the branch pipe 102. The air drives the fan blade 213 to rotate, which in turn drives the magnet block 214 at the end of the fan blade 213 shaft near the filter frame 301b to rotate. When the magnet block 214 with a different magnetic pole from the magnet block 301d rotates... 4. When the magnetic block 301d on the surface of the filter frame 301b is at the same horizontal plane, the magnetic block 214 on the shaft of the fan blade 213 will attract the magnetic block 301d, causing the filter frame 301b to slide towards the connecting post 212. At this time, the elastic element 301j is compressed, and the shaft of the fan blade 213 continues to rotate. The magnetic block 214, which has the same magnetic pole as the magnetic block 301d, will be at the same horizontal plane as the magnetic block 301d. The magnetic block 301d will be subjected to the repulsive force of the magnetic block 214. The filter frame 301b is subjected to the repulsive force of the elastic element 301j and the magnetic block 214. Under the action of air, the fan blades 213 will slide away from the connecting column 212. The fan blades 213 will rotate continuously under the action of air, which will drive the filter frame 301b to slide back and forth, shaking off the dust on the arc-shaped filter plate 301c inside the filter frame 301b. The shaken-off dust is blown out by the air and discharged from the dust outlet shell 205 into the dust collection box 206 to complete the dust collection. When cleaning the dust on the used arc-shaped filter plate 301c, the cleaned arc-shaped filter plate 301c will participate in the air filtration. The filter device can be cleaned and filtered at the same time without affecting the air filling operation.

[0050] Example 3

[0051] Reference Figures 1-6This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that an arc-shaped retaining ring 202 is provided on the side of the intermediate shell 201, and a semi-retaining ring 208 is provided on the side of the half-cover box 207. The semi-retaining ring 208 and the arc-shaped retaining ring 202 are combined to form a complete retaining ring. The outer side of the filter frame 301b contacts the retaining ring. The top of the semi-retaining ring 208 has a straight section, providing space for the filter frame 301b on the upper part of the intermediate shell 201 to slide on the intermediate frame 301a. Square grooves 301f are formed at both ends of the top of the filter frame 301b. A pressure strip 301g is provided on the top of the filter frame 301b, and two... A square key 301h is provided at the end. The arc-shaped filter plate 301c is set inside the filter frame 301b. The top of the arc-shaped filter plate 301c is pressed down by the pressure strip 301g to position the arc-shaped filter plate 301c and prevent it from moving when rotating in the filter frame 301b. When the arc-shaped filter plate 301c needs to be replaced after a period of use, the half cover box 207 embedded between the ash outlet shell 205 and the intermediate shell 201 can be removed, and the half retaining ring 208 can be removed together. At this time, the half retaining ring 208 is no longer pressing the filter frame 301b, and the pressure strip 301g can be easily taken out to remove the arc-shaped filter plate 301c, which facilitates the disassembly of the arc-shaped filter plate 301c.

[0052] During operation, the arc-shaped filter plate 301c is set inside the filter frame 301b. The top of the arc-shaped filter plate 301c is pressed down by the pressure strip 301g to position it. When the arc-shaped filter plate 301c needs to be replaced after a period of use, the half cover box 207 embedded between the ash outlet shell 205 and the intermediate shell 201 can be removed, and the half retaining ring 208 can be removed together. At this time, the half retaining ring 208 is no longer pressing the filter frame 301b, and the pressure strip 301g can be easily removed to take out the arc-shaped filter plate 301c, which facilitates the disassembly of the arc-shaped filter plate 301c. When disassembling the arc-shaped filter plate 301c on the upper part of the intermediate shell 201, the arc-shaped filter plate 301c on the lower part of the intermediate shell 201 can still perform filtration without affecting the air filling operation.

[0053] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure performing the function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0054] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0055] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An oil tank gas replenishment device, characterized in that: include, The tracheal assembly (100) includes a main pipe (101), a branch pipe (102) disposed at the top of the main pipe (101), and a solenoid valve (103) disposed on the outer wall of the branch pipe (102); and, A housing assembly (200) is disposed on the side of the main tube (101), and the main tube (101) is connected to the housing assembly (200); and, A filter assembly (300) disposed inside the housing assembly (200); The outer shell assembly (200) has an inflation tube (104) at one end away from the main pipe (101), the branch pipe (102) is connected to the main pipe (101), the solenoid valve (103) controls the connection and closure of the branch pipe (102) and the main pipe (101), the top of the outer shell assembly (200) is connected to the branch pipe (102), and the bottom of the outer shell assembly (200) is connected to the main pipe (101). The outer shell assembly (200) includes an intermediate shell (201), an arc-shaped retaining ring (202) is provided on the side of the intermediate shell (201), a through side plate (203) is provided on the side of the arc-shaped retaining ring (202), and a through hole (204) is provided at the center of the through side plate (203). The intermediate shell (201) is provided with a sliding side plate (209) on the side away from the through side plate (203), and a circular slide rail (210) is provided on the side of the sliding side plate (209). One end of the intermediate shell (201) is provided with an ash outlet shell (205), the side of the ash outlet shell (205) is provided with an ash collection box (206), the side of the ash outlet shell (205) near the intermediate shell (201) is provided with a half cover box (207), and the side of the half cover box (207) is provided with a half retaining ring (208). The side of the sliding plate (209) is provided with a middle plate (211), the top of the middle plate (211) is provided with a connecting column (212), the top of the connecting column (212) is provided with a fan blade (213), and a magnet block (214) is provided at one end of the fan blade (213) through the connecting column (212). The filter assembly (300) includes a filter plate structure (301) disposed inside the intermediate shell (201). A rotating wheel (302) is disposed on the side of the filter plate structure (301). The shaft of the rotating wheel (302) penetrates the through hole (204) of the through side plate (203) and is connected to the filter plate structure (301). The filter plate structure (301) includes an intermediate frame (301a), and filter frames (301b) are provided at the top and bottom of the intermediate frame (301a). A T-shaped slider (301e) is provided at the top of the filter frame (301b). The inner wall of the filter frame (301b) is provided with an arc-shaped filter plate (301c), and a magnetic block (301d) is provided on the side of the filter frame (301b) away from the arc-shaped filter plate (301c).

2. The oil tank gas replenishment device as described in claim 1, characterized in that: The filter frame (301b) has square grooves (301f) at both ends of its top, a pressure strip (301g) at the top, and square keys (301h) at both ends of the bottom of the pressure strip (301g).

3. The oil tank gas replenishment device as described in claim 2, characterized in that: The filter frame (301b) is provided with a telescopic column (301i) on its side. The inner wall of the telescopic column (301i) is provided with an elastic element (301j). The end of the elastic element (301j) away from the filter frame (301b) is provided with a fixed column (301k). The bottom of the fixed column (301k) is connected to the intermediate frame (301a).

Images