阅读说明：本技术 一种低噪音真空泵 (Low-noise vacuum pump ) 是由 石宁 杨春 于 2020-03-10 设计创作，主要内容包括：本发明公开了一种低噪音真空泵,包括基座,所述基座的顶部外壁通过螺栓固定有减震座,且减震座的顶端通过螺栓固定有电机,所述电机的外壁通过螺栓固定有泵体,且泵体的端部外壁设有机封轴套,所述机封轴套的内壁设有连接轴,且连接轴的端部外壁套接有联轴器,所述电机的输出轴和联轴器之间对夹设有转子,所述转子的底端外壁同轴连接有轴封座。本发明在支架和泵体间采取减震座隔振措施,泵内辐射噪音通过内部结构实现降噪,内部中梅花形结构的联轴器在高速旋转时引起周围空气扰动而诱发空气声,在联轴器端部设有平衡轴套,减少空气在轴套内的旋转扰动,降低噪音,泵体上设有旁通阀,防止电机过载,在一定程度上也实现降噪。(The invention discloses a low-noise vacuum pump which comprises a base, wherein a shock absorption seat is fixed on the outer wall of the top of the base through a bolt, a motor is fixed on the top end of the shock absorption seat through a bolt, a pump body is fixed on the outer wall of the motor through a bolt, a mechanical seal shaft sleeve is arranged on the outer wall of the end part of the pump body, a connecting shaft is arranged on the inner wall of the mechanical seal shaft sleeve, a coupler is sleeved on the outer wall of the end part of the connecting shaft, a rotor is oppositely clamped between an output shaft of the motor and the coupler, and a shaft seal seat is coaxially connected with the outer. The vibration isolation measure of the shock absorption seat is adopted between the support and the pump body, noise reduction is realized through the internal structure of the pump by radiated noise, air noise is induced by ambient air disturbance caused by the coupler with a quincunx structure in the coupler when the coupler rotates at high speed, the balance shaft sleeve is arranged at the end part of the coupler, the rotation disturbance of air in the shaft sleeve is reduced, the noise is reduced, the bypass valve is arranged on the pump body, the overload of the motor is prevented, and the noise reduction is also realized to a certain extent.)

1. A low-noise vacuum pump comprises a base (1) and is characterized in that a shock absorption seat (2) is fixed on the outer wall of the top of the base (1) through bolts, a motor (12) is fixed on the top of the shock absorption seat (2) through bolts, a pump body (11) is fixed on the outer wall of the motor (12) through bolts, a mechanical seal shaft sleeve (6) is arranged on the outer wall of the end portion of the pump body (11), a connecting shaft is arranged on the inner wall of the mechanical seal shaft sleeve (6), a shaft coupling (9) is sleeved on the outer wall of the end portion of the connecting shaft, a rotor (3) is oppositely clamped between an output shaft of the motor (12) and the shaft coupling (9), a shaft seal seat (5) is coaxially connected on the outer wall of the bottom end of the rotor (3), the inner wall of the shaft seal seat (5) is connected with the connecting shaft through a bearing, an air inlet (10) is arranged on, the bottom outer wall of the pump body (11) is provided with an exhaust port, the outer wall of the exhaust port is provided with a lower exhaust flange (4), and the inner wall of the coupler (9) is positioned on the outer wall of the connecting shaft and is sleeved with a coupling (14).

2. A low noise vacuum pump according to claim 1, wherein the cross-section of the coupling (14) is a quincunx structure, and the balance sleeve (15) is sleeved on the outer wall of the connection part of the coupling (14) and the inner wall of the balance sleeve (15).

3. A low noise vacuum pump according to claim 1, wherein the rotor (3) comprises two symmetrically distributed rotating rollers, two symmetrically distributed helical gears and a rotor shaft sleeve (7), and the outer walls of the two helical gears are engaged and roll-connected on the inner wall of the rotor shaft sleeve (7), and the two helical gears are respectively sleeved on the outer walls of the ends of the two rotating rollers.

4. A low noise vacuum pump according to claim 1, characterized in that the outer wall of the pump body (11) near the coupling (9) is provided with an oil cup (13), and the inner wall of the oil cup (13) is provided with a sealing plug.

5. A low-noise vacuum pump according to claim 1, characterized in that the outer wall of the end part of the mechanical seal shaft sleeve (6) is provided with a sight glass, and the outer wall of one side of the mechanical seal shaft sleeve (6) close to the shaft coupling (9) is provided with a bypass valve (8) in a clamping way.

6. A low noise vacuum pump according to claim 1, wherein a switch is connected to the motor (12), and the switch is connected to a P L C controller through a lead.

Technical Field

The invention relates to the technical field of vacuum pumps, in particular to a low-noise vacuum pump.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. In general, a vacuum pump is a device for improving, generating and maintaining a vacuum in a certain closed space by various methods. Vacuum pumps can be basically classified into two types, i.e., a gas trap pump and a gas transfer pump, according to the operating principle of the vacuum pump. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

The existing vacuum pump can generate more noises which are mostly derived from motor noises, pump body radiation noises, coupling noises and bracket radiation noises, and the weakening and noise reduction of the sounds are one of the problems in the field of vacuum pumps when the vacuum pump works.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a low-noise vacuum pump.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a low noise vacuum pump, includes the base, the top outer wall of base has the shock mount through the bolt fastening, and the top of shock mount has the motor through the bolt fastening, the outer wall of motor has the pump body through the bolt fastening, and the tip outer wall of the pump body is equipped with the mechanical seal axle sleeve, the inner wall of mechanical seal axle sleeve is equipped with the connecting axle, and the tip outer wall of connecting axle has cup jointed the shaft coupling, the butt clamp is equipped with the rotor between the output shaft of motor and the shaft coupling, the bottom outer wall coaxial coupling of rotor has the shaft seal seat, and the inner wall of shaft seal seat is connected with the connecting axle through the bearing, the top outer wall of the pump body is equipped with the air inlet, and the outer wall of air inlet is equipped with air intake flange, the bottom outer wall of the pump body is equipped with the gas vent, and the.

As a further scheme of the invention, the cross section of the coupling is of a quincunx structure, and the outer wall of the joint of the inner walls of the coupling and the balance shaft sleeve is sleeved with the balance shaft sleeve.

As a further scheme of the invention, the rotor comprises two rotating rollers which are symmetrically distributed, two helical gears which are symmetrically distributed and a rotor shaft sleeve, the outer walls of the two helical gears are meshed and connected on the inner wall of the rotor shaft sleeve in a rolling way, and the two helical gears are respectively sleeved on the outer walls of the end parts of the two rotating rollers.

As a further scheme of the invention, an oil cup is arranged on the outer wall of one side of the pump body, which is close to the coupler, and a sealing plug is arranged on the inner wall of the oil cup.

As a further scheme of the invention, the outer wall of the end part of the mechanical seal shaft sleeve is provided with a sight glass, and the outer wall of one side of the mechanical seal shaft sleeve, which is close to the coupler, is oppositely clamped with a bypass valve.

As a further scheme of the invention, the motor is connected with a switch, and the switch is connected with a P L C controller through a lead.

The invention has the beneficial effects that:

1. the vacuum pump comprises a bracket, a pump body and a motor, wherein the bracket, the pump body and the motor are arranged in sequence according to the magnitude of the sound power of the radiation noise of each part;

2. the vacuum pump has the advantages that the coupler of the quincunx structure in the inner part of the vacuum pump causes ambient air disturbance to induce air noise when rotating at a high speed, the coupler radiates outwards through the opening, the sound power level of the pump is increased by about 0.5dB due to the radiation, the balance shaft sleeve is arranged at the coupling end of the coupler, the rotation disturbance of air in the shaft sleeve is reduced, the noise is reduced, meanwhile, the bypass valve is arranged on the pump body, the motor is prevented from being overloaded, and the noise reduction is realized to a certain extent.

Drawings

FIG. 1 is a schematic front view of a low noise vacuum pump according to the present invention;

FIG. 2 is a schematic side sectional view of a low noise vacuum pump according to the present invention;

fig. 3 is a schematic sectional view of a coupling of a low noise vacuum pump according to the present invention.

In the figure: the device comprises a base 1, a damping seat 2, a rotor 3, an exhaust flange 4, a shaft seal seat 5, a machine seal shaft sleeve 6, a rotor shaft sleeve 7, a bypass valve 8, a shaft coupler 9, an air inlet 10, a pump body 11, a motor 12, an oil cup 13, a shaft coupler 14 and a balance shaft sleeve 15.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-3, a low noise vacuum pump, including a base 1, a vibration damping mount 2 is fixed on the outer wall of the top of the base 1 through bolts, a motor 12 is fixed on the top of the vibration damping mount 2 through bolts, a pump body 11 is fixed on the outer wall of the motor 12 through bolts, and the outer wall of the end portion of the pump body 11 is provided with a mechanical seal shaft sleeve 6, the inner wall of the mechanical seal shaft sleeve 6 is provided with a connecting shaft, and the outer wall of the end portion of the connecting shaft is sleeved with a shaft coupling 9, a rotor 3 is clamped between the output shaft of the motor 12 and the shaft coupling 9, the outer wall of the bottom end of the rotor 3 is coaxially connected with a shaft seal mount 5, and the inner wall of the shaft seal mount 5 is connected with the connecting shaft through a bearing, the outer wall of the top end portion of the pump body 11 is provided with an air inlet 10, and the outer wall of the air inlet 10 is provided with an air inlet flange, the outer wall of the bottom end portion of the pump body 11 is provided with an exhaust port, and the outer wall of the exhaust port is provided with a lower exhaust flange 4, the inner wall of the shaft coupling 9 is positioned on the outer wall of the connecting shaft coupling 14, the outer wall of the coupling 14, the coupling is provided with a quincunx-shaped structure, and the outer wall of the coupling 14, and the outer wall of the coupling is provided with a sealing plug 358, and a rolling switch, and two sealing plugs are respectively arranged on the outer wall of the shaft coupling, and the outer wall of the.

The working principle is as follows: the low-noise vacuum pump is composed of a motor 12, a coupler 9, a pump body 11 and a base 1, wherein the base 1 is fixed on a casing of the pump through a shock absorption seat 2, an end cover of the pump body 11, the casing, a rotor 3 and a shaft seal seat 5 are all cast iron parts, an air inlet 10 is arranged in the center of the upper portion of the casing and connected with a pumped system, an exhaust port is arranged at the lower portion of the casing and connected with a cavity of a backing machine seal shaft sleeve 6 and the shaft seal seat 5, when the pump works, two mutually vertical 8-shaped rotors 3 in a pump cavity are driven by a pair of bevel gear belts with a transmission ratio of 1 to reversely, synchronously rotate at a high speed, pumped bodies are sucked into a closed space between the rotor 3 and the pump casing from the air inlet 10 and then discharged through the exhaust port, the outer surface of the pump body is formed by 5 parts, the upper surface and the lower surface are approximate to a plane, and the.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.