CN210423030U - Dry type variable pitch screw vacuum pump - Google Patents
Dry type variable pitch screw vacuum pump Download PDFInfo
- Publication number
- CN210423030U CN210423030U CN201921068500.3U CN201921068500U CN210423030U CN 210423030 U CN210423030 U CN 210423030U CN 201921068500 U CN201921068500 U CN 201921068500U CN 210423030 U CN210423030 U CN 210423030U
- Authority
- CN
- China
- Prior art keywords
- vacuum pump
- screw
- pump body
- air outlet
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a dry-type becomes screw thread square screw vacuum pump relates to screw vacuum pump technical field. The progressive cavity is mainly provided with the gradually-decreasing caliber from the air inlet to the air outlet, the sizes of the screw rotors and the screw pitches between the rotors are gradually decreased from the air inlet to the air outlet, so that gas is compressed in the pump body, the backflow of the gas at the outlet of the vacuum pump can be reduced, the vacuum pump has better performance, high vacuum degree and large air displacement, and the efficiency is improved; simultaneously, the baffle that staggers the distribution has been set up at the air outlet cavity, forms circuitous passageway to effectively carry out the noise reduction to the gas vent that the displacement is big through amortization fibre cotton, the amortization post that set up.
Description
Technical Field
The utility model relates to a dry-type becomes screw thread square screw vacuum pump relates to screw vacuum pump technical field.
Background
The screw vacuum pump is an air extraction device which utilizes a screw rod to rotate at a high speed in a pump shell to generate air suction and exhaust functions, is a renewal product of an oil seal type vacuum pump, can extract gas occasions containing a large amount of water vapor and a small amount of dust, is widely applied to the fields of enterprises which have higher requirements on clean vacuum in domestic pharmacy, chemical industry, semiconductors and the like, and has certain gaps between the screw rods, so the screw vacuum pump has the advantages of no maintenance and the like. The screw pitches of screw rotors of the existing dry screw vacuum pumps are equal, and the vacuum efficiency and the working performance are lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dry-type becomes pitch screw vacuum pump to solve the problem of mentioning in the above-mentioned background art.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a dry-type becomes screw-type torque screw vacuum pump, its structure includes the base, locates the motor and the pump body of base upside and locates the external circuit box of motor surface, pump body upper right side is provided with the air inlet, the gas vent has been seted up to one side that the air inlet was kept away from to the pump body, pump body inboard is equipped with the chamber step by step, the chamber step by step is linked together with gas vent and air inlet, pump body inner chamber is equipped with the screw rod, the screw rod right-hand member passes through the bearing with the motor and is connected, the screw pitch between the size of screw rod rotor and the rotor diminishes gradually by air inlet to gas vent direction, pump body inboard is equipped with out the air.
Furthermore, the inner wall of the air outlet cavity is provided with a plurality of baffles, the baffles are distributed on the inner wall of the air outlet cavity in a staggered manner from left to right, silencing cellucotton is arranged at the bottoms of the baffles, and silencing columns are arranged between the baffles.
Furthermore, the silencing columns are arranged between the three adjacent baffles, and the middle baffle is attached to one side of each silencing column.
Furthermore, the caliber of the progressive cavity gradually decreases from the air inlet to the air outlet.
Further, the outer edge of the screw rotor matches the inner surface of the progressive cavity.
Compared with the prior art, the utility model, it mainly has set up the bore of progressive cavity and the size of screw rotor and the pitch between each rotor from the air inlet to the gas vent direction and diminishes gradually from the air inlet to the gas vent direction, so gas is compressed in the pump body, can reduce the gas reflux in the vacuum pump exit like this, make the vacuum pump obtain better performance, vacuum high, the displacement is big and raise the efficiency; simultaneously, the baffle that staggers the distribution has been set up at the air outlet cavity, forms circuitous passageway to effectively carry out the noise reduction to the gas vent that the displacement is big through amortization fibre cotton, the amortization post that set up.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of A in FIG. 1;
in the figure: the device comprises a base 1, a motor 2, an external circuit box 3, a pump body 4, an air inlet 5, an air outlet 6, a progressive cavity 7, a screw 8, an air outlet cavity 101, a baffle plate 102, silencing cellucotton 103 and a silencing column 104.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-2, the present invention provides a dry type variable pitch screw vacuum pump, comprising: the structure of the air-out pump comprises a base 1, a motor 2 and a pump body 4 which are arranged on the upper side of the base 1, and an external circuit box 3 which is arranged on the outer surface of the motor 2, wherein an air inlet 5 is arranged on the upper right side of the pump body 4, an air outlet 6 is arranged on one side, away from the air inlet 5, of the pump body 4, a progressive cavity 7 is arranged on the inner side of the pump body 4, the progressive cavity 7 is communicated with the air outlet 6 and the air inlet 5, a screw 8 is arranged in the inner cavity of the pump body 4, the right end of the screw 8 is connected with the motor 2 through a bearing, the size of a rotor of the screw 8 and the pitch between the rotors are gradually reduced from the air inlet 5 to the air outlet 6, an air outlet cavity 101 is arranged on the inner side of the pump body 4, the air outlet cavity 101, the bottom of the baffle plate 102 is provided with silencing cellucotton 103, a silencing column 104 is arranged between the baffle plates 102, the silencing column 104 is arranged between three adjacent baffle plates 102, the middle baffle plate 102 is attached to one side of the silencing column 104, the caliber of the progressive cavity 7 is gradually reduced from the air inlet 5 to the air outlet 6, and the outer edge of the rotor of the screw 8 is matched with the inner surface of the progressive cavity 7.
The motor 2 mentioned in the specification is of a model TC6344, and has the advantages of small size, low noise, high torque, wide speed change, light weight and wide application range.
For example, a user enables the motor 2 to operate through the external circuit box 3, the motor 2 drives the screw 8 to rotate, the caliber of the progressive cavity 7 is gradually reduced from the air inlet 5 to the air outlet 6, the size of the rotor of the screw 8 and the pitch between the rotors are gradually reduced from the air inlet 5 to the air outlet 6, so that air is compressed in the pump body 4, the backflow of air at the outlet of the vacuum pump can be reduced, the vacuum pump has better performance, high vacuum degree and large exhaust amount, and the efficiency is improved; meanwhile, baffles 102 which are distributed in a staggered manner are arranged in the air outlet cavity 101 to form a circuitous channel, and noise of the air outlet 6 with large air displacement is effectively reduced through the arranged silencing cellucotton 103 and the silencing column 104.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a dry-type becomes spiral shell square screw vacuum pump, its structure includes base (1), locate motor (2) and the pump body (4) of base (1) upside and locate external circuit box (3) of motor (2) surface, its characterized in that: the utility model discloses a pump body, including pump body (4), pump body (4) upper right side is provided with air inlet (5), gas vent (6) have been seted up to one side that air inlet (5) were kept away from in pump body (4), pump body (4) inboard is equipped with progressive chamber (7), progressive chamber (7) are linked together with gas vent (6) and air inlet (5), pump body (4) inner chamber is equipped with screw rod (8), screw rod (8) right-hand member is connected through the bearing with motor (2), the pitch between the size of screw rod (8) rotor and the rotor diminishes gradually by air inlet (5) to gas vent (6) direction, pump body (4) inboard is equipped with air outlet cavity (101), gas vent (6) below is located in air outlet cavity (101), and locates screw rod (8) top.
2. A dry variable pitch screw vacuum pump as claimed in claim 1, wherein: the inner wall of the air outlet cavity (101) is provided with a plurality of baffles (102), the baffles (102) are distributed on the inner wall of the air outlet cavity (101) in a staggered manner from left to right, silencing cellucotton (103) is arranged at the bottom of each baffle (102), and silencing columns (104) are arranged between the baffles (102).
3. A dry variable pitch screw vacuum pump as claimed in claim 2, wherein: the sound-absorbing column (104) is arranged between three adjacent baffles (102), and the middle baffle (102) is attached to one side of the sound-absorbing column (104).
4. A dry variable pitch screw vacuum pump as claimed in claim 1, wherein: the caliber of the progressive cavity (7) gradually decreases from the air inlet (5) to the air outlet (6).
5. A dry variable pitch screw vacuum pump as claimed in claim 1, wherein: the outer edge of the rotor of the screw (8) is matched with the inner surface of the progressive cavity (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068500.3U CN210423030U (en) | 2019-07-10 | 2019-07-10 | Dry type variable pitch screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921068500.3U CN210423030U (en) | 2019-07-10 | 2019-07-10 | Dry type variable pitch screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423030U true CN210423030U (en) | 2020-04-28 |
Family
ID=70379823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921068500.3U Active CN210423030U (en) | 2019-07-10 | 2019-07-10 | Dry type variable pitch screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423030U (en) |
-
2019
- 2019-07-10 CN CN201921068500.3U patent/CN210423030U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1793654A (en) | Double-screw compressor for high pressure system | |
| CN204984884U (en) | Variable -pitch dry screw vacuum pump | |
| CN1676938A (en) | Rotary dual-cylinder compressor using exhaust middle partition board | |
| CN202673609U (en) | Reciprocating air compressor | |
| CN104005954B (en) | A kind of vertical roots dry vacuum pump | |
| CN210423030U (en) | Dry type variable pitch screw vacuum pump | |
| CN108105121A (en) | A kind of multistage composite high vacuum dry pump | |
| CN107842502A (en) | A kind of novel rotary vane type vacuum pump | |
| CN216198984U (en) | Dry-type does not have oily two-stage vacuum pump | |
| CN202946385U (en) | Spiral slice energy-efficient and environment-friendly vacuum pump | |
| CN101457758B (en) | Enhancement air exhaust composite molecular pump | |
| CN206397743U (en) | The motor compressor of the built-in economic benefits and social benefits oil separating structure of band | |
| CN102278311A (en) | Structure of rotor and shaft of multilevel dry type vacuum pump and application thereof | |
| KR101315358B1 (en) | Pump with multiple stage of impeller | |
| CN215256655U (en) | Oil-free lubrication mixed gas compressor | |
| CN209687806U (en) | A kind of oil-free centrifugal air compressor of hydrogen fuel cell | |
| CN202091197U (en) | Vertex compressor and static vertex disc | |
| CN207004820U (en) | A kind of oil-free scroll air compressor machine | |
| CN210686304U (en) | Double-end symmetrical uniform-pitch screw vacuum pump | |
| CN203488393U (en) | Molecular pump capable of resisting atmospheric impact | |
| CN203655632U (en) | Vacuum pump of edge rod | |
| CN217813921U (en) | Vertical bilateral oilless scroll vacuum pump for pumping liquid mixture gas | |
| CN203867921U (en) | Improved vertical water ring vacuum pump | |
| CN213396144U (en) | Rotary cooling device is used in bamboo charcoal production | |
| CN202673682U (en) | Disc air compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 249-1, Dong'an, Xiagong Village, Zhangban Town, Quanzhou Taiwanese Investment Zone, Quanzhou City, Fujian Province, 362000 Patentee after: Nassim Industry (Quanzhou) Co., Ltd. Address before: 4th Floor, Building 5, Derun Industrial Park, Yucheng Village, Zhangban Town, Taiwanese Investment Zone, Quanzhou City, Fujian Province, 362000 Patentee before: FUJIAN QUANZHOU NAXIMU INDUSTRIAL EQUIPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address |