An oil-gas separation type rotary vane vacuum pump

Abstract

The present invention discloses an oil-gas separation type rotary vane vacuum pump, comprising a pump body, a stator fixedly arranged in the pump body, a front rotor rotatably connected to the surface of the stator, a front rotary vane fixedly connected inside the front rotor, a rear rotor arranged in the pump body, a rear rotary vane radially slidably arranged on the rear rotor, an upper end of the pump body is provided with an upper end connected to an oil tank, an adjusting frame fixedly connected to the upper end of the oil tank, a motor fixedly connected to the upper end of the adjusting frame, a rotating shaft fixedly connected to the front end output shaft of the motor, a pulley fixedly connected to the rotating shaft, and a pump wheel connected to the pulley through a belt. Beneficial effects: the upper end of the pump body in the device is connected to the motor through the adjusting frame, the height of the motor is conveniently controlled through the adjusting frame, and the device is conveniently installed, and by setting an oil-gas separator, the oil mist in the exhaust gas can be separated during the exhaust process to prevent environmental pollution and reduce the waste of pump oil.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum pump bodies, and in particular to an oil-gas separation type rotary vane vacuum pump. Background Art

[0002] A vacuum pump refers to a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. In layman's terms, a vacuum pump is a device that uses various methods to improve, generate and maintain a vacuum in a closed space. The vacuum pump uses vacuum pump oil as the medium to evacuate. During the operation of the vacuum pump, the exhaust gas of the vacuum pump contains a large amount of oil mist particles. If it is not separated, these oil mist particles will be discharged with the evacuated gas, forming a white oil mist that is often seen at the pump port, which not only pollutes the working environment, but also consumes a large amount of pump oil. Frequent refueling of the vacuum pump is required. In addition, the existing vacuum pump lacks an adjustment device, and the motor is more troublesome to operate when it is installed with the pump body for transmission.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0004] The object of the present invention is to provide an oil-gas separation type rotary vane vacuum pump to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An oil-gas separation rotary vane vacuum pump comprises a pump body, a front end cover is arranged at the front end of the pump body, a rear end cover is arranged at the rear end of the pump body, a stator is fixedly arranged at the pump body, a front rotor is rotatably connected to the surface of the stator, a front rotary vane is fixedly connected to the interior of the front rotor, a middle wall and a rear rotor are arranged inside the pump body on the rear side of the front rotor, the middle wall is fixedly connected to the inner wall of the pump body, a rear rotary vane is radially slidably arranged on the rear rotor, an air intake cylinder is arranged on the right side of the pump body, the air intake cylinder is communicated with the interior of the pump body, and an oil A pipe, the oil pipe is connected to the pump body, the oil pipe is provided with a solenoid valve, the upper end of the pump body is provided with an upper end connected to the oil tank, the upper end of the oil tank is fixedly connected to an adjusting frame, the upper end of the adjusting frame is fixedly connected to a motor, the front end output shaft of the motor is fixedly connected to a rotating shaft, the rotating shaft is fixedly connected to a pulley, the pulley is connected to a pump wheel through a belt, the pump wheel is arranged at the front end of a front end cover of the pump body, the middle part of the pump wheel is fixedly connected to a pump shaft, the pump shaft is arranged in the middle part of the front end cover of the pump body, and a roller bearing is arranged at the rear end of the connection between the pump shaft and the front end cover.

[0007] Furthermore, the adjusting frame is a lifting adjusting frame, and the adjusting frame is composed of a lifting cylinder.

[0008] Furthermore, a shaft seal is provided at the front end of the connection between the pump shaft and the front end cover.

[0009] Furthermore, a support cushion is fixedly connected to the lower end of the pump body, and the support cushion is made of rubber material.

[0010] Furthermore, the upper end of the pump body is connected to an exhaust valve assembly, the upper end of the exhaust valve assembly is connected to a small oil tank, and the upper end of the small oil tank is connected to an oil-gas separator.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] When in use, the motor drives the pump wheel on the pump body at the lower end of the motor to rotate through the rotating shaft, pulley and belt, thereby driving the front rotor and the rear rotor inside the pump body to rotate. During the rotation of the front rotor and the rear rotor, air is continuously sucked, compressed and exhausted. The air is sucked through the air intake cylinder, and the exhaust is completed through the exhaust valve assembly. During the exhaust process, the oil mist in the exhaust gas can be separated out due to the provision of an oil-gas separator, and the recovered pump oil is collected through a small oil tank, which not only effectively prevents the generated oil mist particles from affecting the working environment, but also can effectively save pump oil. A shaft seal is provided at the front end of the connection between the pump shaft and the front end cover to effectively ensure The sealing performance of the pump body can be improved by setting a lifting adjustment frame. By controlling the lifting adjustment frame, the distance between the motor and the oil tank can be adjusted, thereby adjusting the distance between the motor and the pump body. When installing the pulley and belt of the transmission assembly, the motor can be lowered first and then installed, and then the motor can be raised, which improves the convenience of device installation. By setting a supporting cushion, the supporting cushion can reduce the wear on the bottom of the pump body caused by the pressure generated when the pump body is in direct contact with the ground, reduce the vibration generated by the vacuum pump during operation, have a shock-absorbing effect, prevent damage to the internal components of the vacuum pump, and effectively protect the vacuum pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is a front view of an oil-gas separation type rotary vane vacuum pump according to an embodiment of the present invention;

[0015] Figure 2 1 is a side view of an oil-gas separation rotary vane vacuum pump according to an embodiment of the present invention.

[0016] Reference numerals:

[0017] 1. Motor; 2. Adjustment frame; 3. Oil tank; 4. Oil-gas separator; 5. Small oil tank; 6. Solenoid valve; 7. Oil pipe; 8. Exhaust valve assembly; 9. Pump body; 10. Intake cylinder; 11. Pump wheel; 12. Front cover; 13. Shaft seal; 14. Roller bearing; 15. Front rotor; 16. Front vane; 17. Middle wall; 18. Rear rotor; 19. Rear vane; 20. Rear cover; 21. Pump shaft; 22. Support cushion. DETAILED DESCRIPTION

[0018] Below, the invention is further described in conjunction with the accompanying drawings and specific embodiments:

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment 1:

[0022] See also Figure 1-2 According to an embodiment of the present invention, an oil-gas separation rotary vane vacuum pump comprises a pump body 9, a front end cover 12 is provided at the front end of the pump body 9, a rear end cover 20 is provided at the rear end of the pump body 9, a stator is fixedly provided inside the pump body 9, a front rotor 15 is rotatably connected to the surface of the stator, a front rotary vane 16 is fixedly connected inside the front rotor 15, a middle wall 17 and a rear rotor 18 are provided inside the pump body 9 on the rear side of the front rotor 15, the middle wall 17 is fixedly connected to the inner wall of the pump body 9, a rear rotary vane 19 is radially slidably provided on the rear rotor 18, an air intake cylinder 10 is provided on the right side of the pump body 9, the air intake cylinder 10 is communicated with the inside of the pump body 9, and the pump body 9 An oil pipe 7 is arranged on the left side, the oil pipe 7 is connected with the pump body 9, the oil pipe 7 is provided with a solenoid valve 6, the upper end of the pump body 9 is provided with an upper end connected with an oil tank 3, the upper end of the oil tank 3 is fixedly connected with an adjusting frame 2, the upper end of the adjusting frame 2 is fixedly connected with a motor 1, a rotating shaft is fixedly connected to the front end output shaft of the motor 1, a pulley is fixedly connected to the rotating shaft, the pulley is connected to a pump wheel 11 through a belt, the pump wheel 11 is arranged at the front end of the front end cover 12 of the pump body 9, a pump shaft 21 is fixedly connected to the middle part of the pump wheel 11, the pump shaft 21 is arranged in the middle part of the front end cover 12 of the pump body 9, and a roller bearing 14 is arranged at the rear end of the connection between the pump shaft 21 and the front end cover 12.

[0023] Through the above scheme of the present invention, the beneficial effect is as follows: when in use, the motor 1 is started, and the motor 1 drives the pump wheel 11 on the pump body 9 at the lower end of the motor 1 to rotate through the rotating shaft, pulley and belt, thereby driving the front rotor 15 and the rear rotor 18 inside the pump body 9 to rotate. During the rotation of the front rotor 15 and the rear rotor 18, air is continuously sucked, compressed and exhausted. The air is sucked through the intake cylinder 10, and the exhaust is exhausted through the exhaust valve assembly 8.

[0024] Embodiment 2:

[0025] See also Figure 2 As for the adjusting frame 2, the adjusting frame 2 is a lifting adjusting frame, and the adjusting frame 2 is composed of a lifting cylinder.

[0026] Through the above scheme of the present invention, beneficial effects are achieved: by setting a lifting and adjusting frame, during use, the distance between the motor 1 and the oil tank 3 can be adjusted by controlling the lifting and adjusting frame, thereby adjusting the distance between the motor 1 and the pump body 9. When installing the pulley and belt of the transmission component, the motor 1 can be lowered first and then installed, and then the motor 1 can be raised, thereby improving the convenience of device installation.

[0027] Embodiment three:

[0028] See also Figure 2 For the pump shaft 21 , a shaft seal 13 is provided at the front end of the connection between the pump shaft 21 and the front end cover 12 .

[0029] Through the above solution of the present invention, a beneficial effect is achieved: by providing the shaft seal 13, the internal sealing performance of the pump body 9 can be ensured.

[0030] Embodiment 4:

[0031] See also Figure 2 As for the pump body 9, a support cushion 22 is fixedly connected to the lower end of the pump body 9, and the support cushion 22 is made of rubber material.

[0032] Through the above scheme of the present invention, beneficial effects are achieved: the supporting cushion 22 can reduce the wear on the bottom of the pump body 9 caused by the pressure generated when the pump body 9 is in direct contact with the ground, reduce the vibration generated by the vacuum pump during operation, have a shock-absorbing effect, prevent damage to the internal components of the vacuum pump, and effectively protect the vacuum pump.

[0033] Embodiment five:

[0034] See also Figure 1 As for the pump body 9, the upper end of the pump body 9 is connected to the exhaust valve assembly 8, the upper end of the exhaust valve assembly 8 is connected to the small oil tank 5, and the upper end of the small oil tank 5 is connected to the oil-gas separator 4.

[0035] Through the above scheme of the present invention, the beneficial effect is as follows: in the process of exhausting the device through the exhaust valve assembly 8, since the oil-gas separator 4 is provided, the oil mist in the exhaust gas can be separated out, and the recovered pump oil is collected by the small oil tank 5, which not only effectively prevents the generated oil mist particles from affecting the working environment, but also can effectively save pump oil.

[0036] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0037] In actual application, when in use, the motor 1 is started, and the motor 1 drives the pump wheel 11 on the pump body 9 at the lower end of the motor 1 to rotate through the rotating shaft, pulley and belt, thereby driving the front rotor 15 and the rear rotor 18 inside the pump body 9 to rotate. During the rotation of the front rotor 15 and the rear rotor 18, air is continuously sucked, compressed and exhausted. The air is sucked through the air intake cylinder 10, and the exhaust is completed through the exhaust valve assembly 8. During the exhaust process, the oil-gas separator 4 is provided, so that the oil mist in the exhaust gas can be separated out, and the recovered pump oil is collected by the small oil tank 5, which not only effectively prevents the generated oil mist particles from affecting the working environment, but also can effectively save pump oil. The front end of the connection between the pump shaft 21 and the front end cover 12 is provided with The shaft seal 13 can effectively ensure the sealing performance of the pump body 9. By setting a lifting adjustment frame, the distance between the motor 1 and the oil tank 3 can be adjusted by controlling the lifting adjustment frame, thereby adjusting the distance between the motor 1 and the pump body 9. When installing the pulley and belt of the transmission component, the motor 1 can be lowered first and then installed, and then the motor 1 can be raised, which improves the convenience of device installation. By setting a supporting cushion 22, the supporting cushion 22 can reduce the pressure generated when the pump body 9 is in direct contact with the ground and cause wear on the bottom of the pump body 9, reduce the vibration generated by the vacuum pump during operation, have a shock-absorbing effect, prevent damage to the internal components of the vacuum pump, and effectively protect the vacuum pump.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-gas separation rotary vane vacuum pump, characterized in that: The pump body (9) comprises a pump body (9), wherein a front end cover (12) is arranged at the front end of the pump body (9), a rear end cover (20) is arranged at the rear end of the pump body (9), a stator is fixedly arranged inside the pump body (9), a front rotor (15) is rotatably connected to the surface of the stator, a front rotary vane (16) is fixedly connected inside the front rotor (15), a middle wall (17) and a rear rotor (18) are arranged inside the pump body (9) on the rear side of the front rotor (15), the middle wall (17) is fixedly connected to the inner wall of the pump body (9), a rear rotary vane (19) is radially slidably arranged on the rear rotor (18), an air intake cylinder (10) is arranged on the right side of the pump body (9), the air intake cylinder (10) is communicated with the inside of the pump body (9), an oil pipe (7) is arranged on the left side of the pump body (9), and the oil pipe (7) is arranged on the left side of the pump body (9). The pipe (7) is connected to the pump body (9), the oil pipe (7) is provided with a solenoid valve (6), the upper end of the pump body (9) is provided with an upper end connected to an oil tank (3), the upper end of the oil tank (3) is fixedly connected to an adjusting frame (2), the upper end of the adjusting frame (2) is fixedly connected to a motor (1), the front end output shaft of the motor (1) is fixedly connected to a rotating shaft, the rotating shaft is fixedly connected to a pulley, the pulley is connected to a pump wheel (11) through a belt, the pump wheel (11) is arranged at the front end of a front end cover (12) of the pump body (9), the middle part of the pump wheel (11) is fixedly connected to a pump shaft (21), the pump shaft (21) is arranged at the middle part of the front end cover (12) of the pump body (9), and a roller bearing (14) is arranged at the rear end of the connection between the pump shaft (21) and the front end cover (12); The adjusting frame (2) is a lifting adjusting frame, and the adjusting frame (2) is composed of a lifting cylinder; A shaft seal (13) is provided at the front end of the connection between the pump shaft (21) and the front end cover (12); The lower end of the pump body (9) is fixedly connected with a supporting cushion (22), and the supporting cushion (22) is made of rubber material; The upper end of the pump body (9) is connected to an exhaust valve assembly (8), the upper end of the exhaust valve assembly (8) is connected to a small oil tank (5), and the upper end of the small oil tank (5) is connected to an oil-gas separator (4).

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