CN216077758U - Negative pressure generating device with adjustable pressure - Google Patents
Negative pressure generating device with adjustable pressure Download PDFInfo
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- CN216077758U CN216077758U CN202122416041.7U CN202122416041U CN216077758U CN 216077758 U CN216077758 U CN 216077758U CN 202122416041 U CN202122416041 U CN 202122416041U CN 216077758 U CN216077758 U CN 216077758U
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Abstract
The utility model relates to the technical field of generating devices, in particular to a pressure-adjustable negative pressure generating device, which comprises a valve body, an adjustable valve core and a sealed air chamber, wherein an air inlet is arranged at the top of the valve body, an air exhaust port is arranged at one end of the valve body, an air outlet is arranged at the other end of the valve body, the sealed air chamber is fixedly arranged in the valve body, a plurality of air inlets are formed in the outer wall of the sealed air chamber, a supporting seat is fixedly arranged at the air outlet, a fixed seat is fixedly arranged outside the air exhaust port, a plurality of air exhaust holes are formed in the supporting seat, two ends of the adjustable valve core respectively penetrate through the supporting seat and the fixed seat, the middle part of the adjustable valve core is in a frustum shape, a threaded rod is arranged at one end close to the air exhaust port, and an adjusting nut is arranged on the threaded rod and outside the fixed seat. The device provided by the utility model has the advantages of simple structure, light weight and convenience in use, is suitable for transportation and recovery of liquid and solid powder, and can also be used for occasions such as recovery of oil in the explosion-proof field, cleaning of a maintenance site and the like.
Description
Technical Field
The utility model relates to the technical field of generating devices, in particular to a negative pressure generating device with adjustable pressure.
Background
The current commonly used negative pressure generating device mostly adopts a motor driving mode, has certain requirements on a power supply and has larger power. The pressure can not be adjusted during the use process; in the explosion-proof field, strict requirements are required on the motor, the motor cannot be used as a power source in many cases, and the motor-driven negative pressure generating device also has the defects of large volume, heavy weight and high price, and is connected with a pipeline and a circuit when used, so that certain requirements are also required on the field operation space.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a negative pressure generating device with adjustable pressure, which has simple structure, light weight and convenient use, is suitable for the transportation and recovery of liquid and solid powder, and can also be used for the recovery of oil in the explosion-proof field, the cleaning of a maintenance site and the like.
The utility model is realized by the following technical scheme:
the utility model provides a pressure adjustable negative pressure generating device, its includes valve body, adjustable case and sealed air chamber, the valve body top is equipped with the air inlet, and valve body one end is equipped with the extraction opening, and the other end is equipped with the gas outlet, sealed air chamber fixed mounting has seted up a plurality of inlet ports on the outer wall of sealed air chamber in the valve body, gas outlet department fixes and is equipped with the supporting seat, the fixed fixing base that is equipped with in extraction opening outside, a plurality of exhaust holes have been seted up on the supporting seat, supporting seat and fixing base are passed respectively at adjustable case both ends, and the middle part of adjustable case is frustum shape, and is the threaded rod in the one end that is close to the extraction opening, installs adjusting nut in the fixing base outside on the threaded rod.
Furthermore, flanges are integrally formed at two ends of the sealed air chamber, and sealing rings are installed at the flanges.
Preferably, the fixing seat is of an L-shaped structure.
The utility model has the advantages of
The negative pressure generating device with adjustable pressure provided by the utility model has the following advantages:
1. the pressure of the pumping hole can be changed by adjusting the position of the adjustable valve core;
2. the structure is simple and compact, the volume is small, and the power consumption is low;
3. can be used in the explosion-proof field.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
in the figure, 1, a fixed seat, 2, an adjustable valve core, 3, a sealed air chamber, 4, a valve body, 5, a supporting seat, 6, an air outlet, 7, an air outlet, 8, an air inlet, 9, an air inlet, 10, a flange, 11, an air extraction opening, 12 and an adjusting nut are arranged.
Detailed Description
The utility model provides a pressure adjustable negative pressure generating device, its includes valve body 4, adjustable case 2 and sealed air chamber 3, the valve body top is equipped with air inlet 9, and valve body one end is equipped with extraction opening 11, and the other end is equipped with gas outlet 6, sealed air chamber fixed mounting has seted up a plurality of inlet ports 8 in the valve body on sealed air chamber's the outer wall, gas outlet department is fixed and is equipped with supporting seat 5, and the extraction opening external fixation is equipped with fixing base 1, a plurality of exhaust holes 7 have been seted up on the supporting seat, supporting seat and fixing base are passed respectively to adjustable case both ends, and adjustable case can slide along the supporting seat, and the middle part of adjustable case is frustum shape, and just is the threaded rod in the one end that is close to the extraction opening, installs adjusting nut 12 in the fixing base outside on the threaded rod.
Further, flanges 10 are integrally formed at two ends of the sealed air chamber, and sealing rings (not shown) are mounted at the flanges to ensure the sealing performance of the sealed air chamber.
Preferably, the fixing seat is of an L-shaped structure, so that the adjustable valve element is convenient to mount and the fixing seat and the equipment are convenient to fix.
The utility model provides a pressure-adjustable negative pressure generating device, wherein the power source is compressed air, the compressed air enters from an air inlet, flows in a sealed air chamber and enters the sealed air chamber from a plurality of air inlet holes of the sealed air chamber, the flow velocity of the air flow passing through the air inlet holes is increased due to the small aperture of the air inlet holes, the high-pressure and high-speed air flow is blown onto the inclined plane of an adjustable valve core after passing through the air inlet holes and is discharged from an air outlet, the flow velocity of the high-pressure and high-speed air flow is increased at the position close to the air outlet, the air flow flowing at high speed drives the air close to an air extraction opening to flow to the air outlet, so that the position close to the air extraction opening generates vacuum, objects close to the air extraction opening and a pipeline behind are discharged from the air outlet under the action of atmospheric pressure, and the purpose of suction is achieved.
When high-pressure high-speed airflow flows through the area close to the air outlet, the nut of the adjustable valve core is adjusted to enable the adjustable valve core to move back and forth, and the middle part of the adjustable valve core is in a frustum shape, so that the cross section area close to the air outlet changes in the process of moving back and forth of the adjustable valve core, the flow velocity of the air passing through the area close to the air outlet changes, the pressure close to the air suction opening changes, and the purpose of adjusting the negative pressure is achieved. This device is because adopt compressed air to replace traditional motor as the power supply, simple structure, light in weight, and convenient to use can be applicable to the transportation and the recovery of liquid and solid powder moreover, also can be used to occasions such as the recovery of explosion-proof field fluid, the clearance of maintenance scene simultaneously.
In conclusion, the negative pressure generating device with adjustable pressure provided by the utility model is simple in structure, light in weight, convenient to use, suitable for transportation and recovery of liquid and solid powder, and also suitable for occasions such as recovery of oil in the explosion-proof field and cleaning of a maintenance site.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a pressure adjustable negative pressure generating device which characterized in that: the adjustable valve comprises a valve body, an adjustable valve core and a sealed air chamber, wherein an air inlet is formed in the top of the valve body, an air suction opening is formed in one end of the valve body, an air outlet is formed in the other end of the valve body, the sealed air chamber is fixedly installed in the valve body, a plurality of air inlets are formed in the outer wall of the sealed air chamber, a supporting seat is fixedly arranged at the air outlet, a fixing seat is fixedly arranged at the outer part of the air suction opening, a plurality of exhaust holes are formed in the supporting seat, two ends of the adjustable valve core penetrate through the supporting seat and the fixing seat respectively, the middle of the adjustable valve core is frustum-shaped, a threaded rod is arranged at one end close to the air suction opening, and an adjusting nut is installed on the threaded rod outside the fixing seat.
2. The negative pressure generating device with adjustable pressure as claimed in claim 1, wherein the sealing air chamber is integrally formed with flanges at both ends thereof, and the flanges are provided with sealing rings.
3. The negative pressure generating device with adjustable pressure as claimed in claim 1, wherein the fixing seat is an L-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122416041.7U CN216077758U (en) | 2021-10-08 | 2021-10-08 | Negative pressure generating device with adjustable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122416041.7U CN216077758U (en) | 2021-10-08 | 2021-10-08 | Negative pressure generating device with adjustable pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216077758U true CN216077758U (en) | 2022-03-18 |
Family
ID=80637672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122416041.7U Active CN216077758U (en) | 2021-10-08 | 2021-10-08 | Negative pressure generating device with adjustable pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216077758U (en) |
-
2021
- 2021-10-08 CN CN202122416041.7U patent/CN216077758U/en active Active
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