Spring type rotary vane two-stage pump

Abstract

The utility model relates to a rotary vane pump technical field especially, it relates to a spring formula rotary vane two -stage pump, solved the rotary vane in the prior art unable to completely adhere to the pump body inner chamber, leading to rotary vane sliding is not smooth, appears the problem such as impact noise. A spring formula rotary vane two -stage pump, including support seat, the top fixed mounting of support seat has rotary vane two -stage pump body, and rotary vane two -stage pump body includes rotary motor, senior pump body. The utility model, through installing in the inner portion of senior rotary vane and low -grade rotary vane respectively has spiral spring one and spiral spring two, can effectively support rectangle flake one and rectangle flake two, make rectangle flake one and rectangle flake two completely adhere to the inner chamber of senior pump body and low -grade pump body, avoid the collision of both with the inner chamber of senior pump body and low -grade pump body, thereby when improving the sliding smoothness of rectangle flake one and rectangle flake two, prolong the service life of rotary vane two -stage pump body.

Description

Technical Field

[0001] This utility model relates to the field of rotary vane vacuum pump technology, and in particular to a spring-loaded rotary vane two-stage pump. Background Technology

[0002] A rotary vane vacuum pump (referred to as a rotary vane pump) is an oil-sealed mechanical vacuum pump; its operating pressure range is 101325~1.33×10-2 (Pa), classifying it as a low vacuum pump; it can be used alone or as a backing pump for other high vacuum or ultra-high vacuum pumps. It has been widely used in production and research departments in metallurgy, machinery, military, electronics, chemical, light industry, petroleum, and pharmaceutical industries.

[0003] Rotary vane pumps come in two types: single-stage and double-stage. A double-stage pump is essentially two single-stage pumps connected in series. They are often made in double-stage pumps to achieve a higher vacuum. The vacuum generated by a double-stage rotary vane pump is achieved by a motor rotating to drive an internal eccentric rotor. Inside the rotor are two vanes. Centrifugal force is used to make the vanes slide against the inner wall, compressing the gas and creating a vacuum.

[0004] However, due to manufacturing or assembly factors, existing rotary vane two-stage pumps may not be able to fully fit the pump body cavity during operation, resulting in a decrease in vacuum or uneven sliding of the vanes under centrifugal force, causing impact noise. Utility Model Content

[0005] The purpose of this invention is to provide a spring-loaded rotary vane two-stage pump that solves the problem in the prior art where the vanes cannot fully fit into the pump body cavity, resulting in uneven vane sliding and noise such as impact.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A spring-loaded rotary vane two-stage pump includes a support base. A rotary vane two-stage pump body is fixedly mounted on the top of the support base. The rotary vane two-stage pump body includes a rotary motor, a high-stage pump body, a low-stage pump body, a high-stage rotor, high-stage vanes, a low-stage rotor, and low-stage vanes. The high-stage pump body is fixedly mounted at one end of the rotary motor, and the low-stage pump body is fixedly mounted at the end of the high-stage pump body away from the rotary motor. The high-stage rotor is fixedly connected to the drive end of the rotary motor, and the high-stage vanes are fixedly connected inside the high-stage rotor. The low-stage rotor is fixedly connected at the end of the high-stage rotor away from the low-stage pump body, and the low-stage vanes are fixedly connected inside the low-stage rotor. The high-stage vanes include two symmetrically distributed rectangular thin plates and a helical spring, which are movably engaged. The helical spring is fixedly connected between the two rectangular thin plates. The low-stage vanes include two symmetrically distributed rectangular thin plates and a helical spring, which are movably engaged. The helical spring is fixedly connected between the two rectangular thin plates.

[0008] Preferably, the advanced rotary vane further includes an oil pressure groove and an oil guide groove. The oil pressure groove is formed inside the two rectangular thin plates, and the oil guide groove is formed on the side surface of the two rectangular thin plates. The oil guide groove is connected to the oil pressure groove.

[0009] Preferably, the lower-level rotary vane further includes an oil pressure groove II and an oil guide groove II. The oil pressure groove II is formed inside the two rectangular thin plates II, and the oil guide groove II is formed on the side surface of the two rectangular thin plates II and is connected to the oil pressure groove II.

[0010] Preferably, the top of the advanced pump body has an air inlet, and the top of the advanced pump body, on the other side of the air inlet, has an exhaust port. Two connecting pipes are symmetrically distributed and fixedly connected to the top of the advanced pump body, and the two connecting pipes are respectively connected to the air inlet and the exhaust port.

[0011] Preferably, the side surface of the rotary vane two-stage pump body is fixedly connected with heat dissipation ridges, and the interior of the advanced pump body is divided into three parts: air groove one, air groove two, and air groove three by the advanced rotor and advanced vanes.

[0012] Preferably, the advanced rotor and advanced vanes are located inside the advanced pump body, while the low-level rotor and low-level vanes are located inside the low-level pump body.

[0013] This utility model has the following beneficial effects:

[0014] This invention effectively supports rectangular plates one and two by installing helical springs one and two inside the high-grade and low-grade vanes, respectively. This ensures that the rectangular plates one and two fit completely into the inner cavities of the high-grade and low-grade pump bodies, preventing them from colliding with the inner cavities. This improves the smoothness of sliding of the rectangular plates one and two while extending the service life of the vane two-stage pump body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional front view schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall exploded three-dimensional structure of this utility model;

[0018] Figure 3This is a three-dimensional structural diagram of the advanced and low-level rotary vane components of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the advanced rotor and advanced vane components of this utility model;

[0020] Figure 5 This is a schematic diagram of the planar structure of the advanced pump body, advanced rotor, and advanced vane components of this utility model.

[0021] In the diagram: 1. Support base; 2. Rotary vane two-stage pump body; 3. Air inlet; 4. Exhaust outlet; 5. Connecting pipe; 6. Heat dissipation ridge; 7. Air slot one; 8. Air slot two; 9. Air slot three; 201. Rotary motor; 202. High-grade pump body; 203. Low-grade pump body; 204. High-grade rotor; 205. High-grade vane; 206. Low-grade rotor; 207. Low-grade vane; 2051. Rectangular thin plate one; 2052. Helical spring one; 2053. Oil pressure groove one; 2054. Oil guide groove one; 2071. Rectangular thin plate two; 2072. Helical spring two; 2073. Oil pressure groove two; 2074. Oil guide groove two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figure 1-5A spring-loaded rotary vane two-stage pump includes a support base 1. A rotary vane two-stage pump body 2 is fixedly mounted on the top of the support base 1. The rotary vane two-stage pump body 2 includes a rotary motor 201, a high-stage pump body 202, a low-stage pump body 203, a high-stage rotor 204, high-stage vanes 205, a low-stage rotor 206, and low-stage vanes 207. The high-stage pump body 202 is fixedly mounted at one end of the rotary motor 201. The low-stage pump body 203 is fixedly mounted at the end of the high-stage pump body 202 away from the rotary motor 201. The high-stage rotor 204 is fixedly connected to the drive end of the rotary motor 201. The high-stage vanes 205 are fixedly connected inside the high-stage rotor 204. The low-stage rotor 206... 6. The high-level rotor 204 is fixedly connected to the end away from the low-level pump body 203, and the low-level vane 207 is fixedly connected inside the low-level rotor 206; the high-level vane 205 includes two symmetrically distributed rectangular thin plates 2051 and a helical spring 2052, which are movably engaged with each other, and the helical spring 2052 is fixedly connected between the two rectangular thin plates 2051; the low-level vane 207 includes two symmetrically distributed rectangular thin plates 2071 and a helical spring 2072, which are movably engaged with each other, and the helical spring 2052 is fixedly connected between the two rectangular thin plates 2071.

[0024] In use, this invention utilizes a rotary motor 201, which drives the high-level rotor 204 and the low-level rotor 206 to rotate within the high-level pump body 202 and the low-level pump body 203, respectively. During rotation, the high-level rotor 204 drives the high-level vane 205 to rotate, enabling air intake and exhaust. The same applies to the low-level rotor 206. Furthermore, as the high-level vane 205 rotates, it is supported by the elasticity of the helical spring 2052, thus compensating for its length and ensuring it remains in contact with the cavity inside the high-level pump body 202. The same applies to the low-level vane 207. This invention, by installing helical spring 2052 and helical spring 2072 inside the high-grade vane 205 and the low-grade vane 207 respectively, can effectively support the rectangular thin plate 2051 and the rectangular thin plate 2071, so that the rectangular thin plate 2051 and the rectangular thin plate 2071 are completely fitted into the inner cavity of the high-grade pump body 202 and the low-grade pump body 203, avoiding collision between the two and the inner cavity of the high-grade pump body 202 and the low-grade pump body 203. This improves the smoothness of sliding of the rectangular thin plate 2051 and the rectangular thin plate 2071 and extends the service life of the vane two-stage pump body 2.

[0025] Furthermore, the advanced rotary vane 205 also includes an oil pressure groove 2053 and an oil guide groove 2054. The oil pressure groove 2053 is formed inside the two rectangular thin plates 2051, and the oil guide groove 2054 is formed on the side surface of the two rectangular thin plates 2051. The oil guide groove 2054 is connected to the oil pressure groove 2053.

[0026] The oil pressure groove 2053 and oil guide groove 2054 inside the advanced vane 205 allow oil to enter the cavity of the advanced pump body 202 during use, thereby lubricating the advanced vane 205 and the cavity, reducing friction, and extending the service life of the advanced vane 205 and the advanced pump body 202.

[0027] The low-level rotary vane 207 also includes an oil pressure groove 2073 and an oil guide groove 2074. The oil pressure groove 2073 is formed inside the two rectangular thin plates 2071, and the oil guide groove 2074 is formed on the side surface of the two rectangular thin plates 2071 and is connected to the oil pressure groove 2073.

[0028] The oil pressure groove 2073 and oil guide groove 2074 inside the low-level rotary vane 207 work on the same principle as above.

[0029] Furthermore, an air inlet 3 is provided on the top of the advanced pump body 202, and an exhaust port 4 is provided on the top of the advanced pump body 202 and on the other side of the air inlet 3. Two connecting pipes 5 are symmetrically distributed and fixedly connected on the top of the advanced pump body 202, and the two connecting pipes 5 are respectively connected to the air inlet 3 and the exhaust port 4.

[0030] The side surface of the rotary vane two-stage pump body 2 is fixedly connected with heat dissipation protrusions 6. The interior of the advanced pump body 202 is divided into three parts by the advanced rotor 204 and the advanced vane 205: air groove 1 7, air groove 2 8, and air groove 3 9.

[0031] Air slot 1 7 is connected to air inlet 3, and air slot 3 9 is connected to exhaust port 4.

[0032] During the clockwise rotation of the advanced vane 205, the volume of air groove 7 gradually increases, indicating the intake process, while the volume of air groove 9 gradually decreases, indicating the exhaust process. The volume of air groove 8 also gradually decreases, indicating the compression process. As the volume of air groove 7 gradually increases, the gas pressure decreases. The gas pressure outside the air inlet 3 is greater than the pressure inside space A, thus drawing in gas. When the air inlet 3 and air groove 7 are separated by the advanced vane 205, the gas moves to the position of air groove 8 and begins to be compressed, gradually reducing its volume. Finally, it is discharged through the connection between air groove 9 and exhaust port 4.

[0033] Furthermore, the advanced rotor 204 and advanced vane 205 are located inside the advanced pump body 202, while the low-level rotor 206 and low-level vane 207 are located inside the low-level pump body 203.

[0034] In summary:

[0035] In use, the rotary motor 201 is started, so that the transmission end of the rotary motor 201 drives the high-level rotor 204 and the low-level rotor 206 to rotate inside the high-level pump body 202 and the low-level pump body 203 respectively.

[0036] During the rotation of the advanced rotor 204, the advanced vane 205 is driven to rotate, which increases the volume of the first air slot 7, thereby drawing in air through the air inlet 3. As the advanced vane 205 rotates, the air inlet 3 and the first air slot 7 are isolated by the advanced vane 205, and the gas is transferred to the position of the second air slot 8, where it begins to be compressed, the volume gradually decreases, and finally it is discharged through the connection between the third air slot 9 and the exhaust port 4.

[0037] Finally, the oil pressure groove 2053 and oil guide groove 2054 opened inside the advanced vane 205 allow oil to enter the cavity of the advanced pump body 202 when the advanced vane 205 rotates, thereby lubricating the advanced vane 205 and the cavity, reducing friction, and extending the service life of the advanced vane 205 and the advanced pump body 202.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spring-loaded rotary vane two-stage pump, comprising a support base (1), characterized in that, The top of the support base (1) is fixedly mounted with a vane two-stage pump body (2). The vane two-stage pump body (2) includes a rotary motor (201), a high-stage pump body (202), a low-stage pump body (203), a high-stage rotor (204), high-stage vanes (205), a low-stage rotor (206), and low-stage vanes (207). The high-stage pump body (202) is fixedly mounted at one end of the rotary motor (201), and the low-stage pump body (203) is fixedly mounted at the end of the high-stage pump body (202) away from the rotary motor (201). The high-stage rotor (204) is fixedly connected to the drive end of the rotary motor (201). The high-stage vanes (205) are fixedly connected inside the high-stage rotor (204), and the low-stage rotor (206) is fixedly connected to the high-stage rotor (207). The first stage rotor (204) is located away from the end of the low-stage pump body (203), and the low-stage vane (207) is fixedly connected inside the low-stage rotor (206); the high-stage vane (205) includes two symmetrically distributed rectangular thin plates (2051) and a helical spring (2052), the two rectangular thin plates (2051) are movably engaged with each other, and the helical spring (2052) is fixedly connected between the two rectangular thin plates (2051); the low-stage vane (207) includes two symmetrically distributed rectangular thin plates (2071) and a helical spring (2072), the two rectangular thin plates (2071) are movably engaged with each other, and the helical spring (2052) is fixedly connected between the two rectangular thin plates (2071).

2. The spring-loaded rotary vane two-stage pump according to claim 1, characterized in that, The advanced rotary vane (205) further includes an oil pressure groove (2053) and an oil guide groove (2054). The oil pressure groove (2053) is formed inside the two rectangular thin plates (2051), and the oil guide groove (2054) is formed on the side surface of the two rectangular thin plates (2051). The oil guide groove (2054) is connected to the oil pressure groove (2053).

3. A spring-loaded rotary vane two-stage pump according to claim 1, characterized in that, The low-level rotary vane (207) also includes an oil pressure groove (2073) and an oil guide groove (2074). The oil pressure groove (2073) is formed inside the two rectangular thin plates (2071), and the oil guide groove (2074) is formed on the side surface of the two rectangular thin plates (2071) and is connected to the oil pressure groove (2073).

4. A spring-loaded rotary vane two-stage pump according to claim 1, characterized in that, The top of the advanced pump body (202) is provided with an air inlet (3), and the top of the advanced pump body (202) and on the other side of the air inlet (3) is provided with an exhaust port (4). The top of the advanced pump body (202) is symmetrically distributed and fixedly connected with two connecting pipes (5), and the two connecting pipes (5) are respectively connected to the air inlet (3) and the exhaust port (4).

5. A spring-loaded rotary vane two-stage pump according to claim 1, characterized in that, The side surface of the rotary vane two-stage pump body (2) is fixedly connected with heat dissipation protrusions (6), and the interior of the advanced pump body (202) is divided into three parts: air groove one (7), air groove two (8), and air groove three (9) by the advanced rotor (204) and advanced vanes (205).

6. A spring-loaded rotary vane two-stage pump according to claim 1, characterized in that, The advanced rotor (204) and advanced vane (205) are located inside the advanced pump body (202), and the low-level rotor (206) and low-level vane (207) are located inside the low-level pump body (203).

Images