CN217582490U - High-stability frequency conversion screw vacuum pump - Google Patents
High-stability frequency conversion screw vacuum pump Download PDFInfo
- Publication number
- CN217582490U CN217582490U CN202220536016.4U CN202220536016U CN217582490U CN 217582490 U CN217582490 U CN 217582490U CN 202220536016 U CN202220536016 U CN 202220536016U CN 217582490 U CN217582490 U CN 217582490U
- Authority
- CN
- China
- Prior art keywords
- valve
- screw vacuum
- vacuum
- air
- machine
- 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 application relates to the technical field of vacuum pumps, in particular to a high-stability frequency conversion screw vacuum pump. The utility model provides a high stability type frequency conversion screw vacuum pump, includes protective housing, is provided with screw rod vacuum all-in-one in the protective housing, and the support frame is installed to screw rod vacuum all-in-one below, is fixed with the shock pad under the support frame, is provided with the admission valve on the screw rod vacuum all-in-one, has seted up the nozzle opening on the screw rod vacuum all-in-one, is provided with the solenoid valve on the screw rod vacuum all-in-one, is connected with the check valve on the screw rod vacuum all-in-one. This application is through the accurate valve of controlling branch stream block and vacuum admission valve of the solenoid valve on the screw rod vacuum all-in-one, the air input of screw rod vacuum all-in-one is being controlled at the operation in-process solenoid valve to make electromagnetic force automatic switch stop valve when appointed numerical value, the suction of the interior air of reasonable control cylinder and compressed air's discharge, effectual promotion rotor skidding nature makes the screw vacuum pump operation of frequency conversion more stable.
Description
Technical Field
The application relates to the technical field of vacuum pumps, in particular to a high-stability frequency conversion screw vacuum pump.
Background
The screw vacuum pump is an air pumping device which utilizes a pair of screws to synchronously rotate at high speed in a pump shell to generate air suction and exhaust functions, is an updated product of a common water ring vacuum pump, is efficient and energy-saving, can realize higher ultimate vacuum degree, and is widely applied to the fields of enterprises with higher vacuum requirements, such as domestic pharmacy, chemical industry, semiconductors and the like.
The current ordinary water ring vacuum pump is at the in-process that uses, and the operation efficiency is lower, receives water temperature hydraulic influence intervention easily, does not have the capacity modulation function in addition, produces the cavitation erosion phenomenon in making the vacuum pump easily to the cavitation erosion phenomenon leads to the steadiness decline of vacuum pump when the operation easily, and then causes vacuum pump stability to reduce.
SUMMERY OF THE UTILITY MODEL
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
The utility model provides an aim at overcome the above-mentioned not enough, provides a high stability type frequency conversion screw vacuum pump, is controlling the air input of screw vacuum all-in-one through the solenoid valve in the operation process, and the screw vacuum pump operation of messenger's frequency conversion is more stable with compressed air's the discharge of inhaling of the air in the reasonable control cylinder.
In order to achieve the purpose, the technical solution of the application is as follows: a high-stability variable-frequency screw vacuum pump comprises a protective shell, wherein a screw vacuum all-in-one machine is arranged in the protective shell, a support frame is arranged below the screw vacuum all-in-one machine, a shock pad is fixed below the support frame, an air inlet valve is arranged on the screw vacuum all-in-one machine, an oil injection hole is formed in the screw vacuum all-in-one machine, an electromagnetic valve is arranged on the screw vacuum all-in-one machine, a one-way valve is connected onto the screw vacuum all-in-one machine, a shunting block is arranged on the air inlet valve, and a silencer is arranged on the shunting block; a valve body is arranged in the electromagnetic valve, a valve cover is arranged above the valve body, a controller is fixed on the side wall of the valve cover, filter screen rings are respectively arranged at two ends of the valve body, and a hollow tubular column is connected below the valve body. An air inlet valve is installed above the screw vacuum all-in-one machine, and a stop valve is automatically switched on and off through electromagnetic force under the cooperation of an electromagnetic valve, so that the air suction and the compressed air discharge in the air cylinder are reasonably controlled, and the frequency-variable screw vacuum pump is more stable in operation.
In some embodiments, a base is erected below the screw vacuum all-in-one machine, an air filter is installed on the screw vacuum all-in-one machine, an air filter support is fixed on the side wall of the air filter, an air inlet is installed on the air filter, a sound attenuation box is arranged on one side of the screw vacuum all-in-one machine, a control cooling component is arranged on the sound attenuation box, an oil-gas barrel is installed on the other side of the screw vacuum all-in-one machine, and an air outlet is connected to the oil-gas barrel. The air filter mainly provides high-clean air for the screw vacuum all-in-one machine, filters the air that gets into, plays the effect of dust, sand grain in the filtration air, guarantees to get into in the cylinder sufficient, clean air.
In some embodiments, a heat insulation support is arranged in the temperature-reduction control assembly, a wind guide cover is mounted on the heat insulation support, a cooler is embedded in the wind guide cover, a fan is fixed below the cooler, an electric cabinet is arranged below the fan, and a frequency converter is arranged in the electric cabinet. The electric control box is internally provided with electric control equipment, and the electric control equipment is matched with the frequency converter to provide electric control and frequency conversion effects for the screw vacuum all-in-one machine, so that the screw vacuum all-in-one machine is more efficient in operation.
In some embodiments, a sound insulation bin door is installed on the protective shell, a heat dissipation grid groove is formed in the sound insulation bin door, and a touch controller is installed on the protective shell. The built-in soundproof cotton of soundproof door fills, reduces the noise that equipment produced at the operation in-process, sets up the heat dissipation partition tank simultaneously on soundproof door and provides the ventilation cooling export for inside.
In some embodiments, one end of the solenoid valve is connected with the diverter block through a pipeline, and the other end of the solenoid valve is connected with the vacuum air inlet valve through a pipeline. The two ends of the battery valve are respectively connected with the shunting block and the air inlet valve, and the shunting block and the air inlet valve are opened or closed accurately through the control of the electromagnetic valve.
In some embodiments, the diverter block is connected to the air intake valve by a conduit. The shunting block connects the pipeline with the air inlet valve, and releases the air from the air inlet valve after shunting under the matching of the pipeline, and then leads out from the shunting block.
In some embodiments, the front of the vacuum air inlet valve is connected with an air filter, and the air filter bracket is fixed in the protective shell. Empty support and the protective housing bolted fixation of straining play the air cleaner in many empty supports the place ahead of straining and consolidate, promote air cleaner and connect fixed stability.
In some embodiments, the thermally insulating support generally divides the protective shell into two sections. The heat insulation support is distributed above the base, the interior of the protective shell is divided into two sections, the separation of an internal electric control device and a system is ensured, the electric control device and the system are not affected by high temperature during the operation of equipment, and the stability of the vacuum pump is indirectly improved.
The working principle of the application is as follows:
the screw vacuum all-in-one machine is fixed through a base in a protective shell, equipment is operated under the coordination of a control cooling component and a touch controller, a sound insulation door is closed to reduce noise during operation, a heat dissipation separation groove arranged on the door plays the internal air circulation, when an air inlet sucks external air, the air is purified and filtered by matching with an air filter on an air filter support, then the screw vacuum all-in-one machine rotates under the coordination of an electric control component in an electric cabinet and a frequency converter, the control cooling component on one side sucks the air from the outside, the heat insulation support supports an air guide cover, the air guide cover guides the air, the cooler cooling, the cooperation of fan, the cooperation air compressor machine operates, noise reduction box carries out noise reduction when operating equipment, the shock pad that links to each other with the support frame below carries out the shock attenuation when screw rod vacuum all-in-one operation in-process, ensure the operation steady of screw rod vacuum all-in-one, the discharge port is used for discharging the impurity that produces in the screw rod vacuum all-in-one, air behind the vacuum is under the cooperation of battery valve, control the valve switching of this screw rod vacuum all-in-one, stop the valve through electromagnetic force automatic switch, the suction of the air in the reasonable control cylinder and the discharge of compressed air, the screw vacuum pump operation of messenger's its frequency conversion is more stable.
Through adopting foretell technical scheme, the beneficial effect of this application is:
1. this application is through the accurate valve of controlling reposition of redundant personnel piece and vacuum admission valve of the solenoid valve on the screw rod vacuum all-in-one, the air input of screw rod vacuum all-in-one is being controlled to the solenoid valve in operation process to make the electromagnetic force automatic switch stop valve when appointed numerical value, the suction of the air in the reasonable control cylinder and the discharge of compressed air, effectual promotion rotor skidding nature makes the screw vacuum pump operation of frequency conversion more stable.
2. This application carries out the subregion through thermal-insulated support with protective housing's inner space, makes the operation in-process have thermal equipment to place in one, keeps away from in electronic components such as electric cabinet, separates electronic components such as electric cabinet and all the other structural equipment, ensures inside electrically controlled device and system separation, makes electrically controlled device and system not receive the high temperature influence when equipment moves, indirectly improves the stability of vacuum pump.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Clearly, such objects and other objects of the present application will become more apparent after a review of the following detailed description of the preferred embodiments as illustrated in the various figures and drawings.
These and other objects, features and advantages of the present application will become more apparent from the following detailed description of one or more preferred embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and not to limit the application.
In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.
FIG. 1 is a schematic diagram of a high stability variable frequency screw vacuum pump according to some embodiments of the present disclosure;
FIG. 2 is a schematic view of the internal structure of the protective housing of a high stability variable frequency screw vacuum pump according to some embodiments of the present disclosure;
FIG. 3 is a schematic perspective view of a screw vacuum all-in-one machine in a high-stability variable-frequency screw vacuum pump according to some embodiments of the present disclosure;
fig. 4 is a schematic perspective view illustrating an electromagnetic valve in a high-stability variable-frequency screw vacuum pump according to some embodiments of the present disclosure.
Description of the main reference numerals:
1. a protective housing;
11. a base;
12. a screw vacuum all-in-one machine;
121. a support frame;
122. a shock pad;
123. a vacuum intake valve;
124. an oil spray hole;
125. an oil return check valve;
126. a shunting block;
127. a muffler;
128. an electromagnetic valve; 1281. a valve cover; 1282. a controller; 1283. a valve body; 1284. a hollow tubular column; 1285. a screen ring;
13. an air cleaner;
14. an air filter bracket;
15. an oil-gas barrel;
16. an air inlet;
17. an air outlet;
18. a sound silencing box;
19. controlling a cooling component; 191. a cooler; 192. a wind scooper; 193. a fan; 194. an electric cabinet; 195. a thermally insulating support;
2. a sound-insulating bin door;
3. a touch controller;
4. and a heat dissipation grid groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration only.
In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
According to some embodiments of the application, the high-stability frequency conversion screw vacuum pump comprises a protective shell 1, a screw vacuum all-in-one machine 12 is arranged in the protective shell 1, a supporting frame 121 is arranged below the screw vacuum all-in-one machine 12, a damping pad 122 is fixed below the supporting frame 121, an air inlet valve 123 is arranged on the screw vacuum all-in-one machine 12, an oil injection hole 124 is formed in the screw vacuum all-in-one machine 12, an electromagnetic valve 128 is arranged on the screw vacuum all-in-one machine 12, a one-way valve 125 is connected to the screw vacuum all-in-one machine 12, a flow dividing block 126 is arranged on the air inlet valve 123, and a silencer 127 is arranged on the flow dividing block 126; a valve body 1283 is arranged in the electromagnetic valve 128, a valve cover 1281 is arranged above the valve body 1283, a controller 1282 is fixed on the side wall of the valve cover 1281, filter screen rings 1285 are respectively arranged at two ends of the valve body 1283, and a hollow pipe column 1284 is connected below the valve body 1283. An air inlet valve 123 is installed above the screw vacuum all-in-one machine 12, and a stop valve is automatically switched on and off through electromagnetic force under the cooperation of an electromagnetic valve 128, so that the air suction and the compressed air discharge in the air cylinder are reasonably controlled, and the frequency-conversion screw vacuum pump is more stable in operation.
According to some embodiments of the application, optionally, a base 11 is erected below the screw vacuum all-in-one machine 12, an air filter 13 is installed on the screw vacuum all-in-one machine 12, an air filter support 14 is fixed to the side wall of the air filter 13, an air inlet 16 is installed on the air filter 13, a sound muffling box 18 is arranged on one side of the screw vacuum all-in-one machine 12, a control cooling component 19 is arranged on the sound muffling box 18, an oil-gas barrel 15 is installed on the other side of the screw vacuum all-in-one machine 12, and an air outlet 17 is connected to the oil-gas barrel 15. The air filter 13 mainly provides high-purity air for the screw vacuum all-in-one machine 12, filters the entering air, plays a role in filtering dust and sand in the air, and ensures that sufficient and clean air enters the air cylinder.
According to some embodiments of the present application, optionally, a heat insulation support 195 is disposed in the controlled cooling module 19, a wind scooper 192 is mounted on the heat insulation support 195, an intrinsic cooler 191 is embedded in the wind scooper 192, a fan 193 is fixed below the cooler 191, an electric cabinet 194 is disposed below the fan 193, and a frequency converter is disposed in the electric cabinet 194. The electric control box 194 is internally provided with electric control equipment which is matched with a frequency converter to provide electric control and frequency conversion effects for the screw vacuum all-in-one machine 12, so that the screw vacuum all-in-one machine is more efficient to operate.
According to some embodiments of the present application, optionally, one end of the solenoid valve 128 is connected to the diversion block 126 through a pipe, and the other end of the solenoid valve 128 is connected to the vacuum intake valve 123 through a pipe. The two ends of the battery valve 128 are respectively connected with the shunting block 126 and the air inlet valve 123, and the shunting block 126 and the air inlet valve 123 are accurately opened or closed through the control of the electromagnetic valve 128.
According to some embodiments of the present application, optionally, one end of the solenoid valve 128 is connected to the diverter block 126 through a pipe, and the other end of the solenoid valve 128 is connected to the vacuum intake valve 123 through a pipe. The two ends of the battery valve 128 are respectively connected with the shunting block 126 and the air inlet valve 123, and the shunting block 126 and the air inlet valve 123 are accurately opened or closed through the control of the electromagnetic valve 128.
According to some embodiments of the present application, optionally, diverter block 126 is connected to air intake valve 123 via a conduit. The shunting block 126 connects the pipeline with its air inlet valve 123, and under the cooperation of the pipeline, the air is shunted and then released from the air inlet valve 123, and then led out from the shunting block 126.
According to some embodiments of the present application, the vacuum intake valve 123 is optionally connected to the air cleaner 13 in front of the air intake valve, and the air filter holder 14 is fixed to the interior of the protective housing 1. Empty support 14 and the 1 bolted fixation of protective housing of straining play and empty air cleaner 13 in support 14 the place ahead of straining and consolidate, promote air cleaner 13 and connect fixed stability.
According to some embodiments of the present application, the heat shield 195 generally divides the protective case 1 into two sections. The heat insulation support 195 is distributed above the base 11, so that the interior of the protective shell 1 is divided into two sections, and the separation of an internal electric control device from a system is ensured, so that the electric control device and the system are not influenced by high temperature when the equipment runs, and the stability of the vacuum pump is indirectly improved.
Referring to fig. 1-4, fig. 1 is a schematic diagram of a high stability variable frequency screw vacuum pump according to some embodiments of the present disclosure;
FIG. 2 is a schematic diagram of an internal perspective structure of a protective housing in a high stability variable frequency screw vacuum pump according to some embodiments of the present application; FIG. 3 is a schematic perspective view of a screw vacuum all-in-one machine in a high-stability variable-frequency screw vacuum pump according to some embodiments of the present disclosure; fig. 4 is a schematic perspective view illustrating an electromagnetic valve in a high-stability variable-frequency screw vacuum pump according to some embodiments of the present disclosure.
The screw vacuum all-in-one machine 12 is fixed through the base 11 in the protective shell 1, the equipment is operated under the matching of the control cooling component 19 and the touch controller 3, the sound insulation door 2 is closed to reduce the noise during the operation, the heat dissipation separation groove 4 arranged on the door plays the internal air circulation, when the air inlet 16 sucks the external air, the air filter 13 arranged on the air filter support 14 is matched for air purification and filtration, then the screw vacuum all-in-one machine 12 is rotated under the matching of the electric control component and the frequency converter in the electric cabinet 194, the control cooling component 19 at one side sucks the air from the outside, the heat insulation support 195 supports the air guide cover 192, the air guide cover 192 guides the air, the cooler 191 cools, 193 cooperation of fan, the cooperation air compressor machine runs, noise reduction box 18 carries out noise reduction when equipment runs, shock pad 122 that the below links to each other with support frame 121 carries out the shock attenuation in screw rod vacuum all-in-one 12 operation process, ensure the operation of screw rod vacuum all-in-one 12 steady, discharge port 124 is used for discharging the impurity that produces in the screw rod vacuum all-in-one 12, air after the vacuum is under the cooperation of battery valve 128, the valve switching of this screw rod vacuum all-in-one 12 of control, through electromagnetic force automatic switch stop valve, the intake of the air in the reasonable control cylinder and the discharge of compressed air, make the screw rod vacuum pump operation of its frequency conversion more stable.
It is to be understood that the embodiments disclosed herein are not limited to the particular process steps or materials disclosed herein, but rather, are extended to equivalents thereof as would be understood by those ordinarily skilled in the relevant arts. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.
Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.
Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth.
Claims (8)
1. The high-stability variable-frequency screw vacuum pump is characterized by comprising a protective shell (1), wherein a screw vacuum all-in-one machine (12) is arranged in the protective shell (1), a support frame (121) is arranged below the screw vacuum all-in-one machine (12), a shock pad (122) is fixed below the support frame (121), an air inlet valve (123) is arranged on the screw vacuum all-in-one machine (12), an oil injection hole (124) is formed in the screw vacuum all-in-one machine (12), an electromagnetic valve (128) is arranged on the screw vacuum all-in-one machine (12), a one-way valve (125) is connected to the screw vacuum all-in-one machine (12), a shunting block (126) is arranged on the air inlet valve (123), and a silencer (127) is arranged on the shunting block (126);
the improved electromagnetic valve is characterized in that a valve body (1283) is arranged in the electromagnetic valve (128), a valve cover (1281) is installed above the valve body (1283), a controller (1282) is fixed on the side wall of the valve cover (1281), filter screen rings (1285) are respectively arranged at two ends of the valve body (1283), and a hollow tubular column (1284) is connected below the valve body (1283).
2. The high-stability variable-frequency screw vacuum pump according to claim 1, characterized in that a base (11) is erected below the screw vacuum all-in-one machine (12), an air filter (13) is installed on the screw vacuum all-in-one machine (12), an air filter support (14) is fixed on the side wall of the air filter (13), an air inlet (16) is installed on the air filter (13), a sound muffling box (18) is arranged on one side of the screw vacuum all-in-one machine (12), a control cooling component (19) is arranged on the sound muffling box (18), an oil-gas barrel (15) is installed on the other side of the screw vacuum all-in-one machine (12), and an air outlet (17) is connected on the oil-gas barrel (15).
3. The high-stability variable-frequency screw vacuum pump according to claim 2, wherein a heat insulation support (195) is arranged in the temperature reduction control assembly (19), an air guide cover (192) is mounted on the heat insulation support (195), an inherent cooler (191) is embedded in the air guide cover (192), a fan (193) is fixed below the cooler (191), an electric cabinet (194) is arranged below the fan (193), and a frequency converter is arranged in the electric cabinet (194).
4. The high-stability variable-frequency screw vacuum pump according to claim 1, wherein a sound insulation door (2) is installed on the protective casing (1), a heat dissipation grid groove (4) is formed in the sound insulation door (2), and a touch controller (3) is installed on the protective casing (1).
5. The high stability variable frequency screw vacuum pump according to claim 2, wherein the solenoid valve (128) is connected to the diverter block (126) via a pipe, and the other end of the solenoid valve (128) is connected to the vacuum inlet valve (123) via a pipe.
6. The high stability variable frequency screw vacuum pump according to claim 5, wherein the diverter block (126) is connected to the vacuum inlet valve (123) by a pipe.
7. The high-stability variable-frequency screw vacuum pump according to claim 5, wherein the vacuum inlet valve (123) is connected with the air filter (13) in front, and the air filter support (14) is fixed in the protective casing (1).
8. A high stability variable frequency screw vacuum pump according to claim 3, wherein said heat insulating support (195) divides said protective casing (1) into two sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220536016.4U CN217582490U (en) | 2022-03-10 | 2022-03-10 | High-stability frequency conversion screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220536016.4U CN217582490U (en) | 2022-03-10 | 2022-03-10 | High-stability frequency conversion screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582490U true CN217582490U (en) | 2022-10-14 |
Family
ID=83539226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220536016.4U Active CN217582490U (en) | 2022-03-10 | 2022-03-10 | High-stability frequency conversion screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750373A (en) * | 2023-01-09 | 2023-03-07 | 力达(中国)机电有限公司 | Cold and hot isolated variable frequency vacuum pump |
-
2022
- 2022-03-10 CN CN202220536016.4U patent/CN217582490U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750373A (en) * | 2023-01-09 | 2023-03-07 | 力达(中国)机电有限公司 | Cold and hot isolated variable frequency vacuum pump |
| CN115750373B (en) * | 2023-01-09 | 2023-04-14 | 力达(中国)机电有限公司 | Cold and hot isolated variable frequency vacuum pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111637087B (en) | Cooling device for numerical control fan | |
| CN217582490U (en) | High-stability frequency conversion screw vacuum pump | |
| CN208966507U (en) | Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine | |
| CN209494728U (en) | A kind of vacuum pump of roller-type carrier tape forming machine | |
| CN215804869U (en) | EGR valve temperature sensor | |
| WO2022041857A1 (en) | Air suction device, compression assembly, and air conditioner | |
| CN202946385U (en) | Spiral slice energy-efficient and environment-friendly vacuum pump | |
| CN213899294U (en) | Directly-connected driving energy-saving vacuum pump system | |
| CN214063316U (en) | Oil-free efficient high-speed centrifugal air compressor | |
| CN208778239U (en) | Turbofan air-cooled screw pump | |
| CN215762151U (en) | Oxygen-making oilless air compressor | |
| CN2208689Y (en) | Refrigerant recovery and purify device | |
| CN2447695Y (en) | Rotary compressor liquid-storage container with air intake duct | |
| CN218509563U (en) | Integrated two-stage filtering type electronic oil pump | |
| CN218760428U (en) | Roots screw tandem type vacuum system | |
| CN220931422U (en) | Combined type efficient environment-friendly energy-saving refrigerating unit | |
| CN218795088U (en) | High-efficiency energy-saving centrifugal fan matching device | |
| CN219091533U (en) | Gas-water separation system suitable for post-treatment of double-screw machine air compression station | |
| CN215311048U (en) | Vertical filter box of drying machine | |
| CN216620118U (en) | Bidirectional flow cabinet | |
| CN211237719U (en) | Steam discharge silencer | |
| CN211977113U (en) | Dustless cooling processing chamber of auto parts | |
| CN213574608U (en) | Air-cooled variable frequency screw compressor structure | |
| CN214742055U (en) | Screw type air compressor | |
| CN221230245U (en) | Purifying device for helium compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |