CN209781218U - Noise reduction structure of rotary vane vacuum pump - Google Patents
Noise reduction structure of rotary vane vacuum pump Download PDFInfo
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- CN209781218U CN209781218U CN201920520585.8U CN201920520585U CN209781218U CN 209781218 U CN209781218 U CN 209781218U CN 201920520585 U CN201920520585 U CN 201920520585U CN 209781218 U CN209781218 U CN 209781218U
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Abstract
The utility model relates to a vacuum pump technical field specifically is a structure of making an uproar falls in rotary-vane vacuum pump for solve the higher problem that can not reach partial customer operation requirement of current rotary-vane vacuum pump noise. The utility model discloses a pump body, be equipped with the air inlet channel in the gas town with the pump core intercommunication in the pump body, it has intercommunication pump core and external logical groove of admitting air to open in the air inlet channel in the gas town, it has the intercommunication to admit air the inlet port that leads to the groove to open on the air inlet channel in the gas town, be connected with air inlet mechanism on the inlet port. The utility model discloses an it has the intercommunication to admit air the inlet port that leads to the groove to open on the inlet port of gas town inlet channel, and is connected with air inlet mechanism on the inlet port, and when rotary-vane vacuum pump at the during operation, the air flows into inlet channel through air inlet mechanism, finally gets into the pump core, makes the pressure balance in the pump core to can reduce the noise of this rotary-vane vacuum pump operation, and then can satisfy customer's demand more.
Description
Technical Field
the utility model relates to a vacuum pump technical field, more specifically relate to a structure of making an uproar falls in rotary-vane vacuum pump.
Background
The rotary-vane vacuum pump is a basic vacuum obtaining device, can be used for obtaining vacuum or used as a backing pump of other medium-high vacuum pumps, has the advantages of compact structure, small volume, light weight and the like compared with other vacuum pumps, and can be widely applied to the technical processes of vacuum smelting, vacuum coating, vacuum heat treatment, vacuum drying and the like in the industries of metallurgy, machinery, electronics, chemical engineering, petroleum, medicine and the like. The eccentric rotor in the rotary-vane vacuum pump is tangent to the stator fixing surface, and two or more rotary vanes slide in the rotor slot and contact with the inner wall of the stator to divide the pump cavity into several variable-volume rotary vacuum pumps. Since the gap between the vane rotor and the pump chamber is usually sealed with oil, the vane rotor vacuum pump is generally an oil-sealed mechanical vacuum pump, which can pump dry gas in a sealed container, and can pump a certain amount of condensable gas if a gas ballast device is attached.
The rotary vane vacuum pump in the prior art comprises a base, wherein a motor and an oil tank are arranged on the base, the oil tank is positioned on one side of the motor, a vacuum pump body and an end cover are arranged in the oil tank, the vacuum pump body is fixed on the base, a rotating shaft is arranged in the vacuum pump body, a rotary vane is arranged on the rotating shaft, and one end of the rotating shaft is in mechanical transmission connection with a main shaft of the motor; the end cover is fixedly connected with the vacuum pump body, and an oil duct is formed in the vacuum pump body; an oil pump cavity is formed in the end cover, an oil pump rotor connected with the other end of the rotating shaft in a mechanical transmission mode is installed in the oil pump cavity, an oil inlet cavity and an oil outlet cavity are formed in the oil pump cavity, an oil inlet channel communicated with the oil tank cavity and an oil outlet channel communicated with the oil duct are further formed in the end cover, the rotating shaft comprises a first rotating shaft penetrating in the high-pressure pump body and a second rotating shaft penetrating in the low-pressure pump body, one end of the first rotating shaft and one end of the second rotating shaft are connected through a coupling piece, the other end of the first rotating shaft is connected with a main shaft of the motor through the coupling piece, and the other end of the oil pump rotor and the other end of the second rotating shaft are connected through. This rotary-vane vacuum pump is through utilizing the end cover as the pump body of oil pump to and set up the passageway as communicating oil pipe in the end cover, make this rotary-vane vacuum pump omit the pump body and the relevant oil pipe of oil pump, and then simplified the structure of rotary-vane vacuum pump, reduced cost of manufacture and equipment weight.
however, the rotary-vane vacuum pump has the problem that the noise is high and cannot meet the use requirements of part of customers. Therefore, there is a strong need for a structure for a rotary vane vacuum pump that reduces noise.
SUMMERY OF THE UTILITY MODEL
based on above problem, the utility model provides a structure of making an uproar falls in rotary-vane vacuum pump for it is higher to solve current rotary-vane vacuum pump noise, and can not reach the problem of part customer operation requirement. The utility model discloses an it has the intercommunication to admit air the inlet port that leads to the groove to open on the inlet port of gas town inlet channel, and is connected with air inlet mechanism on the inlet port, and when rotary-vane vacuum pump at the during operation, the air flows into inlet channel through air inlet mechanism, finally gets into the pump core, makes the pressure balance in the pump core to can reduce the noise of this rotary-vane vacuum pump operation, and then can satisfy customer's demand more.
the utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
The utility model provides a structure of making an uproar falls in rotary-vane vacuum pump, includes the pump body, be equipped with the gas town inlet channel with pump core intercommunication in the pump body, it has the logical groove of admitting air of intercommunication pump core and external world to open in the gas town inlet channel, pump body top surface installs the gas town switch that can seal gas town inlet channel, it has the inlet port that the logical groove of communicating admitting air to open on the gas town inlet channel, be connected with air inlet mechanism on the inlet port.
in the utility model, when the rotary-vane vacuum pump works, the gas ballast switch is arranged on the top surface of the pump body and seals the gas ballast air inlet channel, so that the outside gas can not enter the air inlet through groove through the gas ballast switch, and finally the gas can not enter the pump core through the gas ballast switch; but the air flows into the inlet port through the air inlet mechanism, because air inlet mechanism and inlet port are intercommunication, the inlet port is intercommunication with the logical groove of admitting air again, so the air passes through inlet port inlet channel, finally gets into the pump core, and the air that gets into in the pump core can make the pressure balance in the pump core to can reduce the noise of this rotary vane vacuum pump operation, and then can satisfy customer's demand more.
as a preferable mode, the air inlet mechanism is an air inlet screw, and an air inlet groove communicated with the air inlet hole is formed in the air inlet screw.
As a preferable mode, the air inlet screw comprises an air inlet part, a transition part and a connecting part which are sequentially connected into a whole, and the connecting part is connected with the air inlet hole.
As a preferable mode, the air inlet groove comprises a conical opening, a tightening through hole and a circular through hole which are communicated in sequence, the conical opening is formed in the air inlet portion, the tightening through hole is formed in the transition portion, and the circular through hole is formed in the connecting portion.
in a preferred mode, the diameter of the tightening through hole is 0.3 mm.
Preferably, the air inlet screw is connected with the air inlet hole through threads.
The utility model has the advantages as follows:
(1) the utility model discloses an it has the intercommunication to admit air the inlet port that leads to the groove to open on the inlet port of gas town inlet channel, and is connected with air inlet mechanism on the inlet port, and when rotary-vane vacuum pump at the during operation, the air flows into inlet channel through air inlet mechanism, finally gets into the pump core, makes the pressure balance in the pump core to can reduce the noise of this rotary-vane vacuum pump operation, and then can satisfy customer's demand more.
(2) The utility model discloses well air inlet mechanism is the air inlet screw, and it has the air inlet duct of intercommunication inlet port to open in the air inlet screw, and the air gets into the inlet port in proper order, admits air and leads to the groove after passing through the air inlet duct in the air inlet screw, finally gets into the pump core.
(3) The utility model discloses well air inlet screw is including connecting gradually integrative portion of admitting air, transition portion and connecting portion, and connecting portion are connected with the inlet port, and the air inlet duct is including the toper opening, the shrink through-hole and the circular through-hole that communicate in proper order, and the toper opening is opened in the portion of admitting air, and the shrink through-hole is opened in transition portion, and circular through-hole is opened in connecting portion. When the rotary-vane vacuum pump works, air sequentially passes through the conical opening, the shrinkage through hole and the circular through hole and enters the air inlet hole, then enters the air inlet through groove through the air inlet hole and finally enters the pump core, and the air entering the pump core can balance the pressure in the pump core, so that the noise generated by the operation of the rotary-vane vacuum pump can be reduced, and the requirements of customers can be met.
(4) The utility model discloses the diameter of well crimple through-hole is 0.3 millimeter, and the little both sides in the centre of air inlet duct are big like this, and it is in the air admission air inlet duct more easily to there is the pressure differential in the air through the locking through-hole, so the air gets into the inlet port and leads to the groove from the air inlet duct more easily, finally gets into the pump core more easily.
(5) The utility model discloses well air inlet screw passes through threaded connection with the inlet port, conveniently admits air the screw and is connected and dismantle with the inlet port, and specific can be that the inlet port is equipped with the internal thread, is equipped with the external screw thread on the connecting portion of air inlet screw to connecting portion can pass through threaded connection with the inlet port.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the front view structure of the present invention;
FIG. 3 is a schematic view of the rear view structure of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 5 is a schematic view of the air inlet screw according to the present invention;
FIG. 6 is a schematic view of the front structure of the air inlet screw according to the present invention;
Fig. 7 is a schematic cross-sectional view at B-B in fig. 6 according to the present invention;
Fig. 8 is an enlarged schematic view of fig. 4 at C according to the present invention;
Reference numerals: the air intake device comprises a pump body 1, a vent screw 2, an air intake part 21, a transition part 22, a connecting part 23, a conical opening 24, a tightening through hole 25, a circular through hole 26, an air ballast air intake channel 3, an air intake hole 4, an air ballast switch 5 and an air intake through groove 6.
Detailed Description
For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.
Example 1:
As shown in fig. 1-8, a noise reduction structure for a rotary-vane vacuum pump comprises a pump body 1, wherein a ballast air inlet channel 3 communicated with a pump core is arranged in the pump body 1, an air inlet through groove 6 communicated with the pump core and the outside is formed in the ballast air inlet channel 3, a ballast switch 5 capable of sealing the ballast air inlet channel 3 is installed on the top surface of the pump body 1, an air inlet hole 4 communicated with the air inlet through groove 6 is formed in the ballast air inlet channel 3, and an air inlet mechanism is connected to the air inlet hole 4.
In the utility model, when the rotary-vane vacuum pump works, the gas ballast switch 5 is arranged on the top surface of the pump body 1 and seals the gas ballast air inlet channel 3, the external gas can not enter the air inlet through groove 6 through the gas ballast switch 5, and finally the gas can not enter the pump core through the gas ballast switch 5; however, air flows into the air inlet holes 4 through the air inlet mechanism, the air inlet mechanism is communicated with the air inlet holes 4, the air inlet holes 4 are communicated with the air inlet through grooves 6, air enters the pump core through the air inlet channels of the air inlet holes 4 and finally enters the pump core, and the air entering the pump core can balance the pressure in the pump core, so that the running noise of the rotary-vane vacuum pump can be reduced, and the requirements of customers can be met.
Example 2:
As shown in fig. 1-8, a noise reduction structure for a rotary-vane vacuum pump comprises a pump body 1, wherein a ballast air inlet channel 3 communicated with a pump core is arranged in the pump body 1, an air inlet through groove 6 communicated with the pump core and the outside is formed in the ballast air inlet channel 3, a ballast switch 5 capable of sealing the ballast air inlet channel 3 is installed on the top surface of the pump body 1, an air inlet hole 4 communicated with the air inlet through groove 6 is formed in the ballast air inlet channel 3, and an air inlet mechanism is connected to the air inlet hole 4.
In this embodiment, the air inlet mechanism is an air inlet screw 2, an air inlet groove communicated with an air inlet hole 4 is formed in the air inlet screw 2, and air enters the air inlet hole 4 and the air inlet through groove 6 in sequence after passing through the air inlet groove in the air inlet screw 2 and finally enters the pump core.
Preferably, the air inlet screw 2 comprises an air inlet portion 21, a transition portion 22 and a connecting portion 23 which are sequentially connected into a whole, the connecting portion 23 is connected with the air inlet hole 4, the air inlet groove comprises a conical opening 24, a tightening through hole 25 and a circular through hole 26 which are sequentially communicated, the conical opening 24 is arranged in the air inlet portion 21, the tightening through hole 25 is arranged in the transition portion 22, and the circular through hole 26 is arranged in the connecting portion 23. When the rotary-vane vacuum pump works, air sequentially passes through the conical opening 24, the tightening through hole 25 and the circular through hole 26 and enters the air inlet hole 4, then enters the air inlet through groove 6 through the air inlet hole 4, finally enters the pump core, and the air entering the pump core can balance the pressure in the pump core, so that the noise generated by the operation of the rotary-vane vacuum pump can be reduced, and the requirements of customers can be met more.
Preferably, the diameter of the constricting channel 25 is 0.3 mm, so that the middle of the inlet channel is small and the two sides are large, air can enter the inlet channel more easily, and the air passing through the constricting channel has a pressure difference, so that air can enter the inlet hole 4 and the inlet channel 6 from the inlet channel more easily, and finally enter the pump core more easily.
preferably, the air inlet screw 2 is in threaded connection with the air inlet hole 4, so that the air inlet screw 2 is conveniently connected with and detached from the air inlet hole 4, specifically, the air inlet hole 4 is provided with an internal thread, and the connecting part 23 of the air inlet screw 2 is provided with an external thread, so that the connecting part 23 can be in threaded connection with the air inlet hole 4.
Other parts of this embodiment are the same as those of the above embodiment, and are not described herein again.
The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a structure of making an uproar falls in rotary-vane vacuum pump, includes the pump body (1), be equipped with in the pump body (1) and press inlet channel (3) with the gas of pump core intercommunication, open logical groove (6) of admitting air of intercommunication pump core and external world in gas press inlet channel (3), switch (5) are pressed to the gas that can seal gas press inlet channel (3) are installed to the pump body (1) top surface, its characterized in that, it has inlet port (4) that the logical groove (6) are led to in the intercommunication to open on gas press inlet channel (3), be connected with air inlet mechanism on inlet port (4).
2. A noise reduction structure of a rotary vane vacuum pump according to claim 1, characterized in that the air inlet mechanism is an air inlet screw (2), and an air inlet groove communicated with the air inlet hole (4) is opened in the air inlet screw (2).
3. a rotary vane vacuum pump noise reduction structure according to claim 2, characterized in that the air inlet screw (2) comprises an air inlet part (21), a transition part (22) and a connecting part (23) which are connected in sequence into a whole, and the connecting part (23) is connected with the air inlet hole (4).
4. A rotary vane vacuum pump noise reduction structure according to claim 3, characterized in that the air inlet groove comprises a conical opening (24), a tightening through hole (25) and a circular through hole (26) which are communicated in sequence, the conical opening (24) is opened in the air inlet portion (21), the tightening through hole (25) is opened in the transition portion (22), and the circular through hole (26) is opened in the connecting portion (23).
5. A rotary vane vacuum pump noise reduction structure according to claim 4, characterized in that the diameter of the constriction through hole (25) is 0.3 mm.
6. A rotary vane vacuum pump noise reduction structure according to any one of claims 2-5, characterized in that the air intake screw (2) is connected with the air intake hole (4) by a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520585.8U CN209781218U (en) | 2019-04-16 | 2019-04-16 | Noise reduction structure of rotary vane vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520585.8U CN209781218U (en) | 2019-04-16 | 2019-04-16 | Noise reduction structure of rotary vane vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781218U true CN209781218U (en) | 2019-12-13 |
Family
ID=68802954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920520585.8U Active CN209781218U (en) | 2019-04-16 | 2019-04-16 | Noise reduction structure of rotary vane vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781218U (en) |
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2019
- 2019-04-16 CN CN201920520585.8U patent/CN209781218U/en active Active
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