Reciprocating vacuum pump with rotary lubrication oil inlet structure

Abstract

The invention discloses a reciprocating vacuum pump with a rotary lubrication oil inlet structure, which comprises a vacuum pump shell, the vacuum pump shell comprises a first mounting frame, the first mounting frame is arranged in the vacuum pump shell, a second mounting frame is arranged in the first mounting frame, and the second mounting frame is positioned above the first mounting frame; and a first through hole is formed in the joint of the first mounting frame and the second mounting frame, a first driving motor is mounted at the bottom end in the vacuum pump shell, and a driving crankshaft penetrating through the first mounting frame is mounted at the output end of the first driving motor through a coupler. Lubricating oil in the oil discharge pipe extrudes the sealing plate, the sealing plate rotates through the hinge shaft and is opened, so that the sealing plate is opened, the lubricating oil in the oil discharge pipe drips into the outer wall of the driving crankshaft, and the lubricating effect of the driving crankshaft of the reciprocating vacuum pump is better.

Description

Technical Field

[0001] The invention relates to the technical field of reciprocating vacuum pumps, in particular to a reciprocating vacuum pump with a rotary lubrication oil inlet structure. Background Art

[0002] A reciprocating vacuum pump, also known as a piston vacuum pump, is a dry vacuum pump. Its working principle is to rely on the reciprocating motion of the piston in the cylinder to inhale and exhaust gas. This pump can be divided into two types: horizontal and vertical. It has the advantages of a wide range of suction. Driven by an electric motor, the crankshaft of the reciprocating vacuum pump rotates, thereby driving the piston to reciprocate in the cylinder. The piston expands and contracts periodically in the cylinder. When the space expands, the residual gas in the cylinder expands and inhales the gas. When the space shrinks, it compresses and exhausts the gas. The piston reciprocates once, and performs four processes of expansion, suction, compression, and exhaust in turn, which is collectively called a cycle. Therefore, a reciprocating vacuum pump with a rotary lubrication oil inlet structure is required to meet the use requirements.

[0003] At present, most of the reciprocating vacuum pumps on the market have no lubrication oil supply mechanism when the crankshaft rotates for a long time, which causes the crankshaft to be worn at the joints due to dryness when the crankshaft rotates for a long time, thereby affecting the service life of the crankshaft of the reciprocating vacuum pump. At the same time, the existing reciprocating vacuum pump is prone to overheating of the internal motor of the reciprocating vacuum pump when used for a long time. If the heat is not dissipated in time, the service life of the reciprocating vacuum pump motor is affected. Summary of the invention

[0004] The object of the present invention is to provide a reciprocating vacuum pump with a rotary lubricating oil inlet structure to solve the problem raised in the above background technology that most reciprocating vacuum pumps on the market currently have no lubricating oil inlet mechanism when the crankshaft rotates for a long time, which causes wear at the connection of the crankshaft due to dryness when the crankshaft rotates for a long time, thereby affecting the service life of the crankshaft of the reciprocating vacuum pump. At the same time, the existing reciprocating vacuum pump is prone to overheating of the internal motor of the reciprocating vacuum pump when used for a long time. If the heat is not dissipated in time, the service life of the reciprocating vacuum pump motor is affected.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a reciprocating vacuum pump with a rotating lubrication oil inlet structure, comprising a vacuum pump housing, which comprises a first mounting frame, wherein the first mounting frame is arranged inside the vacuum pump housing, the second mounting frame is arranged inside the first mounting frame, and the second mounting frame is located above the first mounting frame, a first through hole is provided at the connection between the first mounting frame and the second mounting frame, a first driving motor is installed at the bottom end inside the vacuum pump housing, and a driving crankshaft passing through the first mounting frame is installed at the output end of the first driving motor through a coupling, a rotating rod is installed at one end of the driving crankshaft, and an outer wall of the rotating rod is provided with a mounting groove, a second through hole is provided inside the mounting groove, an air intake pipe is installed at the top end of the vacuum pump housing, and the air intake pipe is connected with the second mounting frame; The heat dissipation mechanism comprises a heat dissipation pipe and a limit assembly, wherein the heat dissipation pipe is mounted on the side wall of one end of the vacuum pump housing, a filter screen body is mounted inside the heat dissipation pipe, a heat dissipation fan body is mounted inside the heat dissipation pipe, a limit plate is mounted on the inner wall of the heat dissipation pipe, and the limit assembly is mounted on the side wall of one end of the vacuum pump housing; A rotary lubrication mechanism comprises an oil storage frame and a third hinged plate, wherein the oil storage frame is mounted on the side wall of the first mounting frame, a piston plate is arranged inside the oil storage frame, and a piston rod penetrating the oil storage frame is mounted at the bottom end of the piston plate, a second hinged plate is hinged at the bottom end of the piston rod, a third hinged plate is mounted on the outer wall of the driving crankshaft, and one end of the third hinged plate is hinged to the second hinged plate, and an oil drain pipe is mounted at the bottom end of the oil storage frame.

[0006] As a preferred solution of the present invention, a reciprocating vacuum pump with a rotary lubrication oil inlet structure, wherein: the second drive motor is installed at the top of the vacuum pump housing, the output end of the second drive motor is installed with a second drive shaft passing through the second installation frame through a coupling, and the outer wall of the second drive shaft is installed with a threaded blade body.

[0007] By adopting the above technical solution, this solution starts the second drive motor to drive the second drive shaft and the threaded blade body to rotate, thereby causing the threaded blade body to rotate to drive air into the interior of the first through hole.

[0008] As a preferred solution of the present invention, a reciprocating vacuum pump with a rotating lubrication oil inlet structure, wherein: the side walls at both ends of the installation groove are installed with slide rails, and a slider is arranged inside the slide rail, a rotating scraper is installed at the end of the slider away from the slide rail, and a second spring body is installed at one end of the rotating scraper, and one end of the second spring body is fixedly connected to the side wall inside the installation groove.

[0009] By adopting the above technical solution, the present solution enables the rotating scraper to drive the slider to rise and fall inside the slide rail through the cooperation between the slider and the slide rail.

[0010] As a preferred solution of the reciprocating vacuum pump with a rotary lubrication oil inlet structure of the present invention, a first spring body penetrating the second through hole is installed at one end of the rotary scrapers close to each other.

[0011] By adopting the above technical solution and designing the first spring body, the first spring body is deformed, so that the first spring body is elastically restored to drive the rotating scraper to reciprocate and rise and fall.

[0012] As a preferred solution of the present invention, a reciprocating vacuum pump with a rotating lubrication oil inlet structure, wherein: the limit assembly includes a mounting frame, the mounting frame is installed on the side wall at one end of the vacuum pump housing, the interior of the mounting frame is hinged with a first hinged plate, and a limit block is installed at one end of the first hinged plate, a third spring body is installed at the end of the first hinged plate away from the limit block, and one end of the third spring body is fixedly connected to the side wall of the vacuum pump housing.

[0013] By adopting the above technical solution, the first hinge plate and the mounting frame are hinged, so that the first hinge plate is pressed inside the mounting frame to rotate and squeeze the third spring body to deform.

[0014] As a preferred embodiment of the present invention, a reciprocating vacuum pump with a rotary lubrication oil inlet structure is provided, wherein; the inner wall of the oil drain pipe is hinged with a hinge shaft, and the outer wall of the hinge shaft is hinged with a sealing plate, the inner wall of the oil drain pipe is provided with an arc groove, and the arc groove and the sealing plate are engaged with each other.

[0015] By adopting the above technical solution, the arc groove and the sealing plate are engaged with each other, so that the sealing plate is rotated through the hinge shaft to open and close the oil drain pipe.

[0016] As a preferred solution of the reciprocating vacuum pump with a rotary lubrication oil inlet structure of the present invention, a clockwork spring is installed on the outer wall of the hinge shaft.

[0017] By adopting the above technical solution, a clockwork spring is installed on the outer wall of the hinge shaft, so that the hinge shaft can be elastically restored to drive the sealing plate to automatically restore.

[0018] As a preferred solution of the reciprocating vacuum pump with a rotary lubrication oil inlet structure of the present invention, there are two groups of limit assemblies with the same structure, and the two groups of limit assemblies are symmetrically installed above and below the heat dissipation mechanism.

[0019] By adopting the above technical solution and designing two sets of limit assemblies, the filter body can be positioned and fixed by the limit assemblies, thereby making it convenient for operators to disassemble and clean the filter body.

[0020] Compared with the prior art, the present invention has the following beneficial effects: The reciprocating vacuum pump with a rotating lubricating oil inlet structure first starts the first driving motor to drive the driving crankshaft and the third hinged plate to rotate, and the third hinged plate is hinged to the second hinged plate through the third hinged plate, and is hinged to the bottom end of the piston rod through the second hinged plate, so that the third hinged plate rotates to drive the second hinged plate to rotate and pull the piston rod, so that the piston rod can be lifted and lowered inside the oil storage frame and pull the piston plate to squeeze the lubricating oil inside the oil storage frame, so that the piston plate can be lifted and lowered reciprocatingly to squeeze the lubricating oil, so that the lubricating oil inside the oil storage frame enters the inside of the oil drain pipe, and the lubricating oil inside the oil drain pipe squeezes the sealing plate to rotate and open through the hinge shaft, so that the sealing plate is opened and the lubricating oil inside the oil drain pipe drips into the driving crankshaft, so that the lubrication effect of the driving crankshaft is better when it rotates for a long time.

[0021] The reciprocating vacuum pump with a rotating lubricating oil inlet structure first starts the heat dissipation fan body to rotate, so that the heat dissipation fan body rotates to drive external air to enter the interior of the vacuum pump housing through the heat dissipation pipe, thereby improving the heat dissipation effect of the reciprocating vacuum pump. The filter body is designed to filter dust and lint in the air, thereby preventing dust and lint from entering the interior of the vacuum pump housing and affecting the service life of the reciprocating vacuum pump. At the same time, the first hinged plate is pressed and hinged to the mounting frame through the first hinged plate, so that the first hinged plate rotates inside the mounting frame and squeezes the third spring body to deform, thereby causing the other end of the first hinged plate to tilt, so that the limit block no longer limits and fixes the filter body, thereby facilitating the disassembly and cleaning of the filter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of a reciprocating vacuum pump with a rotary lubrication oil inlet structure; Figure 2 It is a left-side sectional structural schematic diagram of a reciprocating vacuum pump with a rotary lubrication oil inlet structure; Figure 3 It is a schematic diagram of the rotating structure of a rotating rod of a reciprocating vacuum pump with a rotating lubrication oil inlet structure; Figure 4 It is a schematic diagram of a rotating rod structure of a reciprocating vacuum pump with a rotating lubrication oil inlet structure; Figure 5It is a schematic diagram of the structure of a second drive motor of a reciprocating vacuum pump with a rotary lubrication oil inlet structure; Figure 6 It is a schematic diagram of the main structure of a reciprocating vacuum pump with a rotary lubrication oil inlet structure; Figure 7 It is a schematic diagram of the mounting frame structure of a reciprocating vacuum pump with a rotary lubrication oil inlet structure; Figure 8 The figure is a schematic diagram of the internal structure of an oil storage frame of a reciprocating vacuum pump with a rotary lubrication oil inlet structure.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Vacuum pump housing; 101. First mounting frame; 102. Second mounting frame; 103. First through hole; 104. First drive motor; 105. Drive crankshaft; 106. Rotating rod; 107. Mounting groove; 1071. Second through hole; 1072. Slide rail; 1073. Sliding block; 1074. Rotating scraper; 1075. First spring body; 1076. Second spring body; 108. Air inlet pipe; 109. Second drive motor; 1010. Second drive shaft; 1011. Threaded blade body; 2. heat dissipation mechanism; 201. heat dissipation pipe; 202. filter screen body; 203. heat dissipation fan body; 204. limit plate; 205. limit assembly; 2051. mounting frame; 2052. first hinge plate; 2053. limit block; 2054. third spring body; 3. Rotary lubrication mechanism; 301. Oil storage frame; 302. Piston plate; 303. Piston rod; 304. Second hinge plate; 305. Third hinge plate; 306. Arc groove; 307. Oil drain pipe; 308. Articulated shaft; 309. Sealing plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] Example 1: Reference Figures 1 to 8, which is the first embodiment of the present invention, and this embodiment provides a reciprocating vacuum pump with a rotary lubrication oil inlet structure, which can achieve the problem that most reciprocating vacuum pumps on the market currently have a crankshaft that is in a long-term rotational motion. Due to the lack of a lubrication oil inlet mechanism, the crankshaft is caused to be worn at the connection of the crankshaft due to dryness when the crankshaft is in a long-term rotational motion, thereby affecting the service life of the crankshaft of the reciprocating vacuum pump. At the same time, the existing reciprocating vacuum pump is prone to overheating of the internal motor of the reciprocating vacuum pump when used for a long time. If the heat is not dissipated in time, the service life of the reciprocating vacuum pump motor is affected. The vacuum pump housing 1 includes a first mounting frame 101 and a second drive motor 109. The first mounting frame 101 is arranged on the vacuum pump housing. Inside the body 1, the second mounting frame 102 is arranged inside the first mounting frame 101, and the second mounting frame 102 is located above the first mounting frame 101, and a first through hole 103 is opened at the connection between the first mounting frame 101 and the second mounting frame 102, a first driving motor 104 is installed at the bottom end inside the vacuum pump housing 1, and a driving crankshaft 105 that passes through the first mounting frame 101 is installed at the output end of the first driving motor 104 through a coupling, a rotating rod 106 is installed at one end of the driving crankshaft 105, and an outer wall of the rotating rod 106 is provided with a mounting groove 107, and a second through hole 1071 is opened inside the mounting groove 107, and an air inlet pipe 108 is installed at the top end of the vacuum pump housing 1, and the air inlet pipe 108 is connected to the second mounting frame 102; The side walls at both ends of the installation groove 107 are both installed with slide rails 1072, and a slider 1073 is arranged inside the slide rail 1072. A rotating scraper 1074 is installed at one end of the slider 1073 away from the slide rail 1072, and a second spring body 1076 is installed at one end of the rotating scraper 1074. One end of the second spring body 1076 is fixedly connected to the side wall inside the installation groove 107, and the first spring body 1075 that passes through the second through hole 1071 is installed at the end of the rotating scraper 1074 that is close to each other. Through the cooperation between the slider 1073 and the slide rail 1072, the rotating scraper 1074 drives the slider 1073 to rise and fall inside the slide rail 1072; The second drive motor 109 is installed at the top of the vacuum pump housing 1. The output end of the second drive motor 109 is installed with a second drive shaft 1010 that runs through the second installation frame 102 through a coupling, and the outer wall of the second drive shaft 1010 is installed with a threaded blade body 1011. The second drive motor 109 is started to drive the second drive shaft 1010 and the threaded blade body 1011 to rotate, so that the threaded blade body 1011 rotates to drive air into the first through hole 103. The rotary lubrication mechanism 3 includes an oil storage frame 301 and a third hinged plate 305. The oil storage frame 301 is mounted on the side wall of the first mounting frame 101. A piston plate 302 is arranged inside the oil storage frame 301. A piston rod 303 penetrating the oil storage frame 301 is mounted at the bottom end of the piston plate 302. A second hinged plate 304 is hinged at the bottom end of the piston rod 303. A third hinged plate 305 is mounted on the outer wall of the driving crankshaft 105. One end of the third hinged plate 305 is hinged to the second hinged plate 304. An oil drain pipe 307 is mounted at the bottom end of the oil storage frame 301. The inner wall of the oil drain pipe 307 is hinged with a hinge shaft 308, and the outer wall of the hinge shaft 308 is hinged with a sealing plate 309. The inner wall of the oil drain pipe 307 is provided with an arc groove 306, and the arc groove 306 and the sealing plate 309 are engaged with each other. The outer wall of the hinge shaft 308 is installed with a clockwork spring, which is engaged with the sealing plate 309 through the arc groove 306, so that the sealing plate 309 can be rotated through the hinge shaft 308 to open and close the oil drain pipe 307.

[0026] The specific working principle is that when the reciprocating vacuum pump driving crankshaft 105 needs to be automatically lubricated, the first driving motor 104 is first started to drive the driving crankshaft 105 and the third hinge plate 305 to rotate, and the third hinge plate 305 is hinged to the second hinge plate 304, and the second hinge plate 304 is hinged to the bottom end of the piston rod 303, so that the third hinge plate 305 rotates to drive the second hinge plate 304 to rotate and pull the piston rod 303, so that the piston rod 303 can be lifted and lowered inside the oil storage frame 301. The piston plate 302 is pulled to squeeze the lubricating oil inside the oil storage frame 301, so that the piston plate 302 can be reciprocated and lifted to squeeze the lubricating oil, so that the lubricating oil inside the oil storage frame 301 enters the oil drain pipe 307, and the lubricating oil inside the oil drain pipe 307 squeezes the sealing plate 309 to rotate and open through the hinge shaft 308, so that the sealing plate 309 opens and the lubricating oil inside the oil drain pipe 307 drips into the outer wall of the driving crankshaft 105, so that the lubrication effect of the driving crankshaft 105 of the reciprocating vacuum pump is better.

[0027] Example 2: Reference Figures 1 to 8, which is the first embodiment of the present invention, provides a reciprocating vacuum pump with a rotary lubricating oil inlet structure, which can achieve the problem that most reciprocating vacuum pumps on the market currently have a crankshaft that is in a long-term rotational motion. Due to the lack of a lubricating oil inlet mechanism, the crankshaft is caused to be worn at the connection of the crankshaft due to dryness when the crankshaft is in a long-term rotational motion, thereby affecting the service life of the crankshaft of the reciprocating vacuum pump. At the same time, the existing reciprocating vacuum pump is prone to overheating of the internal motor of the reciprocating vacuum pump when used for a long time. If the heat is not dissipated in time, the service life of the reciprocating vacuum pump motor is affected. The heat dissipation mechanism 2 includes a heat dissipation pipe 201 and a limiting assembly 205. The heat dissipation pipe 201 is installed on the side wall of one end of the vacuum pump housing 1. A filter body 202 is installed inside the heat dissipation pipe 201. A heat dissipation fan body 203 is installed inside the heat dissipation pipe 201. A limiting plate 204 is installed on the inner wall of the heat dissipation pipe 201. The limiting assembly 205 is installed on the side wall of one end of the vacuum pump housing 1. Through the design of two sets of limiting assemblies 205, the filter body 202 is positioned and fixed by the limiting assembly 205, so that it is convenient for operators to disassemble and clean the filter body 202. The limiting assembly 205 includes a mounting frame 2051, which is mounted on the side wall of one end of the vacuum pump housing 1. A first hinged plate 2052 is hinged inside the mounting frame 2051, and a limiting block 2053 is installed at one end of the first hinged plate 2052. A third spring body 2054 is installed at the end of the first hinged plate 2052 away from the limiting block 2053, and one end of the third spring body 2054 is fixedly connected to the side wall of the vacuum pump housing 1. There are two groups of limiting assemblies 205 with the same structure, and the two groups of limiting assemblies 205 are symmetrically mounted above and below the heat dissipation mechanism 2. The first hinged plate 2052 and the mounting frame 2051 are hinged, so that the first hinged plate 2052 is pressed inside the mounting frame 2051 to rotate and squeeze the third spring body 2054 to deform.

[0028] The specific working principle is that when the vacuum pump housing 1 needs to be cooled, the cooling fan body 203 is first started to rotate, so that the cooling fan body 203 rotates to drive the external air to enter the interior of the vacuum pump housing 1 through the heat pipe 201, so as to make the heat dissipation effect of the vacuum pump housing 1 better, and through the design of the filter body 202, the dust and lint in the air are filtered through the filter body 202, so as to prevent the dust and lint from entering the interior of the vacuum pump housing 1, thereby affecting the service life of the reciprocating vacuum pump, and at the same time, by pressing the first hinge plate 2052, and the first hinge plate 2052 is hinged to the mounting frame 2051, the first hinge plate 2052 rotates inside the mounting frame 2051 and squeezes the third spring body 2054 to deform, so that the other end of the first hinge plate 2052 is tilted, so that the limit block 2053 no longer limits and fixes the filter body 202, so as to facilitate the disassembly and cleaning of the filter body 202.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A reciprocating vacuum pump with a rotary lubrication oil inlet structure, characterized in that: include, A vacuum pump housing (1) comprises a first mounting frame (101) and a second drive motor (109), wherein the first mounting frame (101) is arranged inside the vacuum pump housing (1), the second mounting frame (102) is arranged inside the first mounting frame (101), and the second mounting frame (102) is located above the first mounting frame (101), a first through hole (103) is provided at the connection between the first mounting frame (101) and the second mounting frame (102), and the first drive motor (109) is installed at the bottom end of the interior of the vacuum pump housing (1). The vacuum pump housing (104) is provided with a drive crankshaft (105) passing through the first mounting frame (101), and the output end of the first drive motor (104) is provided with a drive crankshaft (105) passing through the first mounting frame (101) via a coupling; a rotating rod (106) is provided at one end of the drive crankshaft (105); an outer wall of the rotating rod (106) is provided with a mounting groove (107); a second through hole (1071) is provided inside the mounting groove (107); an air intake pipe (108) is provided at the top end of the vacuum pump housing (1), and the air intake pipe (108) is in communication with the second mounting frame (102); A heat dissipation mechanism (2), comprising a heat dissipation pipe (201) and a limit assembly (205), wherein the heat dissipation pipe (201) is mounted on a side wall at one end of a vacuum pump housing (1), a filter screen body (202) is mounted inside the heat dissipation pipe (201), a heat dissipation fan body (203) is mounted inside the heat dissipation pipe (201), a limit plate (204) is mounted on the inner wall of the heat dissipation pipe (201), and the limit assembly (205) is mounted on the side wall at one end of the vacuum pump housing (1); A rotary lubrication mechanism (3) comprises an oil storage frame (301) and a third hinged plate (305), wherein the oil storage frame (301) is mounted on the side wall of the first mounting frame (101), a piston plate (302) is arranged inside the oil storage frame (301), and a piston rod (303) penetrating the oil storage frame (301) is mounted at the bottom end of the piston plate (302), a second hinged plate (304) is hinged at the bottom end of the piston rod (303), a third hinged plate (305) is mounted on the outer wall of the driving crankshaft (105), and one end of the third hinged plate (305) is hinged to the second hinged plate (304), and an oil drain pipe (307) is mounted at the bottom end of the oil storage frame (301).

2. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: The second drive motor (109) is installed at the top end of the vacuum pump housing (1); a second drive shaft (1010) penetrating the interior of the second installation frame (102) is installed at the output end of the second drive motor (109) via a coupling; and a threaded blade body (1011) is installed on the outer wall of the second drive shaft (1010).

3. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: The side walls at both ends of the installation groove (107) are both installed with slide rails (1072), and a slider (1073) is provided inside the slide rail (1072), and a rotating scraper (1074) is installed at one end of the slider (1073) away from the slide rail (1072), and a second spring body (1076) is installed at one end of the rotating scraper (1074), and one end of the second spring body (1076) is fixedly connected to the side wall inside the installation groove (107).

4. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 3, characterized in that: A first spring body (1075) that passes through the second through hole (1071) is installed at one end of the rotating scrapers (1074) that are close to each other.

5. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: The limit assembly (205) comprises a mounting frame (2051), the mounting frame (2051) being mounted on a side wall at one end of a vacuum pump housing (1), a first hinge plate (2052) being hingedly connected inside the mounting frame (2051), and a limit block (2053) being mounted on one end of the first hinge plate (2052), a third spring body (2054) being mounted on one end of the first hinge plate (2052) away from the limit block (2053), and one end of the third spring body (2054) being fixedly connected to the side wall of the vacuum pump housing (1).

6. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: The inner wall of the oil drain pipe (307) is hinged with a hinge shaft (308), and the outer wall of the hinge shaft (308) is hinged with a sealing plate (309). The inner wall of the oil drain pipe (307) is provided with an arc groove (306), and the arc groove (306) and the sealing plate (309) are mutually engaged.

7. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: A spring is installed on the outer wall of the hinge shaft (308).

8. A reciprocating vacuum pump with a rotary lubrication oil inlet structure as claimed in claim 1, characterized in that: There are two groups of the limiting components (205) with the same structure, and the two groups of limiting components (205) are symmetrically installed above and below the heat dissipation mechanism (2).

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