CN211536948U - Automatic filter screen dust collector of clearance - Google Patents
Automatic filter screen dust collector of clearance Download PDFInfo
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- CN211536948U CN211536948U CN201922392489.2U CN201922392489U CN211536948U CN 211536948 U CN211536948 U CN 211536948U CN 201922392489 U CN201922392489 U CN 201922392489U CN 211536948 U CN211536948 U CN 211536948U
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Abstract
A filter screen dust collector of automatic cleaning, there are filter screens in the air conduit, the air inlet interface in front of filter screen, there are air nozzles to connect high-pressure airstream behind the filter screen, the air nozzle faces the filter screen in front, there are pulse valves behind the air nozzle, under the control of control circuit, open or close the pulse valve, thus control the opening and closing of the high-pressure airstream; a dust collecting cavity which is vertically closed is arranged in front of the filter screen and below the air inlet; the dust collecting cavity is provided with an openable dust removing opening, and two sides of the filter screen are provided with a light sensitive probe and an air pressure sensitive probe which are connected with a control circuit. The invention has compact structure, can clean the impurities of the filter screen at regular time or according to the requirement, avoids the influence on the ventilation of the filter screen, improves the filtering and cleaning efficiency of the equipment and reduces the energy consumption.
Description
Technical Field
The invention relates to a filter screen dust removal device, in particular to an automatic cleaning filter screen dust removal device.
Background
The filter screen dust removal device is a common device in industrial production, and is used as an independent machine or a part of an integral machine for filtering impurity gases in a specific occasion, particularly impurity particles and the like in industrial waste gas. Conventional filter screen dust collector has the filter screen in air pipe, in the use, can gather particles such as impurity dust gradually, needs regularly shut down back manual cleaning, and when gathering dust debris too much, can influence the air permeability of filter screen to reduce the operating efficiency of whole equipment.
In some occasions with higher requirements on the stability of the ventilation efficiency and long continuous working time, such as an oven system of a tentering setting machine for textile production, in the working engineering, the collected dust and sundries are difficult to manually clear, and in the running process, the running efficiency of the whole equipment is also influenced due to the blockage of a filter screen, the working efficiency is reduced, and the energy consumption is increased.
Disclosure of Invention
The invention aims to provide a filter screen dust removal device capable of automatically cleaning, which can automatically clean dust impurities accumulated on a filter screen and keep the ventilation of the filter screen, thereby improving the operation efficiency of the whole equipment and having the advantage of easy cleaning and dust collection.
The invention also provides a specific embodiment of the automatic cleaning filter screen dust removal device in an oven system of the tentering setting machine.
In order to achieve the technical purpose, the technical scheme of the invention provides an automatic cleaning filter screen dust removal device, a transverse filter screen is arranged in a ventilation pipeline, an air inlet is arranged in front of the filter screen, the gas with impurities discharged from the air inlet flows to the filter screen from the front side of the filter screen and flows back to the rear side of the filter screen and is discharged from an opening at the rear side of the ventilation pipeline, and in the process, impurity particles in the gas are accumulated in front of the filter screen.
According to the technical scheme, an air nozzle communicated with high-pressure airflow is arranged in a cavity of a ventilation pipeline behind a filter screen, the air nozzle faces the front of the filter screen, a pulse valve is arranged behind the air nozzle, and the pulse valve is opened or closed under the control of a control circuit, so that the high-pressure airflow is controlled to be opened or closed.
And a dust collecting cavity which is vertically closed is arranged in front of the filter screen and below the air inlet interface.
When the pulse valve is opened, the high-pressure airflow ejected by the air nozzle has a wind pressure greater than the normal wind pressure in the ventilation pipeline, so that the impurity particles accumulated in front of the filter screen leave the surface of the filter screen and fall into the dust collecting cavity under the action of gravity.
Preferably, the source of the high-pressure gas flow communicated with the air nozzle can be from a high-pressure gas source for production, and can also be obtained by pressurizing conventional clean gas by using a pressurizing pump.
As an optimization, the control circuit for the pulse valve can be controlled manually or programmed according to the working program to open the pulse valve at a set time point.
As optimization, the control circuit for the pulse valve can be a photosensitive sensing circuit by utilizing the characteristic that the impurity particles are accumulated on the filter screen and can influence the light transmittance of the filter screen, a photosensitive probe and a light source of the control circuit are positioned on two sides of the filter screen, the light transmittance of the filter screen is detected through the photosensitive probe, the impurity particle accumulation amount of the filter screen can be estimated, and the pulse valve is opened as required.
As optimization, the control circuit for the pulse valve can be an air pressure sensing circuit by utilizing the characteristic that impurity particles are accumulated on the filter screen, the air permeability of the filter screen can be influenced, and the air pressure change on two sides of the filter screen is different, wherein the air pressure sensing circuit can be an air pressure sensing circuit, two air pressure probes are respectively arranged on two sides of the filter screen, the air pressure difference on two sides of the filter screen is detected by the air pressure probes, the impurity particle accumulation amount of the filter screen can be estimated, and the pulse valve is opened as.
As an optimization, the above control circuits may be used in combination.
As optimization, the bottom of the dust chamber is provided with an openable dust removal opening for cleaning the impurity particles accumulated at the bottom.
Because the dust accumulation cavity is of a closed structure and is close to the air inlet, the air flow of the air inlet can cause the impurity particles accumulated in the dust accumulation cavity to float, and the dust removal efficiency is influenced. As optimization, the elastic wind shield is arranged at the upper part of the dust collecting cavity, the elastic wind shield is connected with the pipe wall of the dust collecting cavity through the movable shaft and is in a state of closing the dust collecting cavity at ordinary times, and the influence of air flow of the air inlet interface on impurity particles accumulated in the dust collecting cavity is reduced. When the air nozzle is opened, the elastic wind shield is overturned downwards when being impacted by high-pressure airflow, and an opening channel of the dust collecting cavity is opened to allow impurity particles to fall down.
As optimization, a pressure dividing pipe is arranged at the upper part of the dust accumulation cavity and communicated with the air inlet interface, and when the air nozzle is opened for air injection, airflow circulation is formed in the dust accumulation cavity, so that the accumulation efficiency of impurity particles is optimized.
As optimization, an arc-shaped air baffle is arranged below the air inlet interface and is bent to the filter screen; the length of the arc-shaped wind shield plate is not more than half of the length of the ventilating duct; the effect of intercepting the airflow of the air inlet interface and reducing the floating effect of impurity particles in the dust chamber is achieved.
As optimization, the filter screen is obliquely arranged in the ventilation pipeline and is close to the air inlet interface; the air nozzles are now inclined, facing vertically towards the screen. The structure can slightly stagger the running tracks of the gas with impurities and the high-pressure gas flow, and the continuous working effect is more optimized.
The invention has the advantages and benefits that: an air nozzle controlled by a pulse valve is arranged behind a filter screen of the ventilation pipeline, and high-pressure airflow is sprayed as required to clean impurity particles accumulated in front of the filter screen; in addition, a vertical closed dust collecting cavity is arranged below an air inlet in front of a filter screen of the ventilating pipeline and used for collecting impurity particles, automatic cleaning of the filter screen is realized, and the ventilation performance of the filter screen is kept, so that the operation efficiency of the whole equipment is improved, and the error leakage and the manpower resource consumption caused by manual intervention are reduced.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of an automatic cleaning screen dust collector of the present invention;
FIG. 2 is a schematic structural view of a second embodiment of the self-cleaning screen dust collector of the present invention;
FIG. 3 is a reference diagram illustrating a conventional dust filtration operation of the embodiment shown in FIG. 2;
FIG. 4 is a reference diagram illustrating the operation of the embodiment of FIG. 2 in automatic cleaning and dust filtration mode;
FIG. 5 is a schematic structural view of a third embodiment of the self-cleaning screen dust collector of the present invention;
FIG. 6 is a schematic structural view of a fourth embodiment of the self-cleaning screen dust collector of the present invention;
FIG. 7 is a reference diagram illustrating a conventional dust filtration operation of the embodiment shown in FIG. 6;
FIG. 8 is a reference view showing an operation state of the automatic dust cleaning and filtering apparatus of the embodiment shown in FIG. 6;
FIG. 9 is a schematic diagram of the embodiment of FIG. 6 in combination with a control circuit;
FIG. 10 is a schematic view of the structure of the horizontal installation state of the embodiment of FIG. 10;
fig. 11 is a structural diagram of an embodiment of the automatic cleaning filter screen dust removing device of the present invention in an oven system of a tenter setting machine;
in the figure: 1. an air inlet interface; 2. filtering with a screen; 3. a pulse valve; 4. an air nozzle; 5. an exhaust gas discharge pipe; 6. a dust accumulation cavity; 7. dust removal port 8, elastic wind shield 9, impurity particles; 10. a pressure pump; 11. a fresh air duct; 12. a heat recovery exchanger; 13. an oven; 14. a thermal energy exchanger; 15. an air chamber of the oven; 16. a pressure dividing pipe; 17. a photosensitive probe; 18. an air pressure probe; 19. a control circuit; 1001. an arc-shaped wind shield.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, in the first embodiment of the present invention, a transverse filter screen 2 is disposed in a ventilation duct 5, an air inlet 1 is disposed in front of the filter screen, the impurity-carrying gas discharged from the air inlet 1 flows from the front of the filter screen 2 to the back of the filter screen and is discharged through a rear opening of the ventilation duct 5, and in the process, impurity particles in the gas are accumulated in front of the filter screen 2.
According to the technical scheme, an air nozzle 4 communicated with high-pressure airflow is arranged in a cavity of a ventilation pipeline 5 behind a filter screen 2, the air nozzle 4 faces the front of the filter screen 2, a pulse valve 3 is arranged behind the air nozzle 4, and the pulse valve 3 is opened or closed under the control of a control circuit, so that the opening and closing of the high-pressure airflow are controlled.
The technical scheme of the invention is that a dust chamber 6 which is vertically closed is arranged in front of the filter screen 2 and below the air inlet 1.
As shown in fig. 2, compared with the embodiment shown in fig. 1, in the second embodiment of the present invention, an elastic wind deflector 8 capable of turning downward is arranged at the upper part of the dust chamber 6, and the elastic wind deflector 8 is connected with the pipe wall of the dust chamber 6 by a movable shaft, so as to realize the function of turning downward after being stressed.
In addition, the bottom of the dust collecting cavity 6 is provided with an openable dust removing opening 7 for cleaning the impurity particles accumulated at the bottom.
As shown in figure 3, the device of the invention can accumulate foreign particles 9 in front of the filter screen 2 during normal operation, and in the embodiment, the bottom of the dust accumulation cavity 6 is provided with an openable dust removal opening 7 for cleaning the foreign particles 9 accumulated at the bottom.
As shown in figure 4, the device of the invention is opened when the pulse valve 3 is opened, the air nozzle 4 sprays high-pressure air flow forwards, and the impurity particles accumulated in front of the filter screen 2 are blown to the dust chamber 6 direction because the air pressure of the high-pressure air flow is larger than the normal air pressure in the ventilation pipeline 5, at this time, the elastic wind shield 8 also turns downwards under the action of the high-pressure air flow, and opens the opening channel of the dust chamber 6, so that the impurity particles fall on the bottom of the dust chamber 6.
As shown in fig. 5, a pressure dividing pipe 16 is arranged at the upper part of the dust chamber 6 and is communicated with the air inlet 1, so that when the air nozzle 4 is opened to inject air, airflow circulation is formed in the dust chamber 6, and the accumulation efficiency of the impurity particles is optimized.
As shown in fig. 6, in the third embodiment of the present invention, an arc-shaped wind shield 1001 is provided below the air inlet 1 and is bent toward the filter screen 2; the length of the arc-shaped wind shield 1001 does not exceed half of the ventilation pipeline 5; the effect of intercepting the airflow of the air inlet interface and reducing the floating effect of impurity particles in the dust chamber is achieved.
The filter screen 2 is obliquely arranged in the ventilating duct 5 and is close to the air inlet port 1; the air nozzle 4 is now inclined, facing perpendicularly to the sieve 2. The structure can slightly stagger the running tracks of the gas with impurities and the high-pressure gas flow, and the continuous working effect is more optimized.
As shown in fig. 7, the impurity-containing gas at the gas inlet 1 is blown toward the obliquely installed filter screen 2 by the arc-shaped wind shield 1001, and the obliquely installed filter screen 2 can receive the impurity-containing gas more uniformly.
As shown in FIG. 8, the inclined air nozzle 4 projects a high pressure air stream forwardly, through the front cavity of the curved damper 1001 by an angular relationship, to allow the dirt particles to fall to the bottom of the dirt collection chamber 6. The original static gas in the dust chamber 6 enters the gas inlet interface 1 through the pressure dividing pipe 16 to form gas flow circulation, and the accumulation efficiency of impurity particles is optimized.
In the embodiment of fig. 6-8, because the filter screen 2 is installed obliquely, impurity particles are easily gathered at the acute-angle joint to form a cleaning dead angle, and to avoid this, the installation joint of the filter screen 2 and the pipe wall of the ventilation pipeline 5 is made into an obtuse-angle joint.
As shown in fig. 9, the solution of the present invention is further equipped with a corresponding control circuit 19, and the control circuit 19 controls the working states of the pressurization pump 10 and the pulse valve 3 through lines. The control circuit 19 has a program control circuit for opening or closing the booster pump 10 and the pulse valve 3 in accordance with a program setting or a manual operation. In order to further enhance the automatic cleaning performance of the equipment, the degree of impurity particle accumulation of the filter screen 2 is judged, a light sensitive circuit and an air pressure sensitive circuit are added in the control circuit 19, and a light sensitive probe 17 and an air pressure probe 18 are added on two sides of the filter screen 2 and are connected through respective lines.
The so-called light-sensitive probe 17, behind the screen 2 and in front of the screen 2, has a light source, which affects the light transmittance of the screen 2 when the screen 2 accumulates more impurity particles, the light-sensitive probe 17 transmits a relevant signal to the light-sensitive circuit, and after being analyzed by the control circuit 19, the booster pump 10 and the pulse valve 3 are turned on or off as required.
The so-called air pressure probes 18 are respectively arranged in front of and behind the filter screen 2, when the impurity particles accumulated on the filter screen 2 increase, the ventilation rate of the filter screen 2 is influenced, the air pressure in front of and behind the filter screen 2 changes, the air pressure difference occurs, the air pressure probes 18 transmit relevant signals to the photosensitive induction circuit, and after the signals are analyzed by the control circuit 19, the pressure pump 10 and the pulse valve 3 are opened or closed as required.
The photosensitive probe 17 and the air pressure probe 18 can coexist in multiple groups to obtain better detection accuracy and avoid misjudgment. The light sensitive circuit and the air pressure sensitive circuit have advantages and disadvantages respectively. Specifically, the photosensitive probe 17 has the advantages of small volume and high sensitivity, is suitable for occasions with small pipe diameter, but has poor efficiency for humid working environment; the air pressure probe 18 is large in size, difficult to install in a narrow space, high in stability and durability and suitable for high-pressure and high-pollution environments. In practical application, the components can be combined or independently used according to requirements.
As shown in fig. 10, according to the technical scheme of the invention, when the ventilation duct 5 is horizontally installed, the functions can be realized, and the only technical point is that the dust collecting cavity 6 is positioned below other components.
As shown in fig. 11, the technical solution of the present invention is provided for a specific application in an oven system of a tenter setting machine. In the figure, a heat recovery exchanger 12 is arranged above an oven 13, fresh air for heat exchange is led out by a fresh air pipe 11, a heat energy exchanger 14 is arranged below the oven 13, the fresh air fed from the fresh air pipe 11 is heated and enters an oven air chamber above, the cloth is dried, impurities such as cloth fibers of the cloth are taken away, then the fresh air enters a ventilation pipeline 5 through an air inlet interface 1, and the ventilation pipeline 5 is connected with a recovery pipeline of the heat recovery exchanger 12. In the ventilation duct 5, a dust collecting chamber 6 is formed below the air inlet 1 by using the top of the heat exchanger. The filter screen 2 is arranged above the air inlet 1, the air nozzle 4 is arranged behind the filter screen 2, the air nozzle 4 is communicated with the pulse valve 3, the pulse valve 3 is communicated with the booster pump 10, and the booster pump 10 is communicated with the fresh air pipe 11.
In a normal working state, the gas with impurities such as cloth fibers is filtered by the filter screen 2 to form clean gas, and the clean gas enters the heat recovery exchanger 12 to participate in heat exchange.
After the booster pump 10 is started and the pulse valve 3 is opened, the clean air of the fresh air pipe 11 is pressurized and then sprayed out at a high speed through the air nozzle 4, and the impurities such as cloth fibers and the like accumulated on the filter screen 2 are cleaned and brought into the bottom of the dust accumulation cavity 6 and accumulated on the top of the heat energy exchanger, so that the function of the technical scheme of the invention is realized. The collected impurities such as cloth fiber and the like are cleaned as required through the dust removal opening 7.
In the specific application of this embodiment, because of long-time uninterrupted operation, filter screen 2 can gather more cloth garrulous fibre and other impurity, seriously influences the air current job stabilization nature of oven to can lead to oven system to increase circulating wind-force, the energy consumption increases. By adopting the technical scheme of the invention, impurities in the filter screen 2 are cleaned regularly, the smooth air channel is ensured, the stable operation of the system is facilitated, the energy consumption is reduced, and the production benefit is improved.
The embodiment shown in fig. 11 simplifies the technical solution of the present invention to be used for embodying the overall structure of the tenter oven system, and actually should also include the control circuit and the sensor shown in fig. 10, and the control circuit can be integrated into the overall control circuit of the tenter oven system.
As shown in fig. 11, the specific application example of the technical solution of the present invention can keep the ventilation ducts of the oven system and the heat recovery exchanger clean, ensure the smooth operation of the whole system, and reduce the frequency of manually cleaning the filter screen, thereby improving the production efficiency and quality.
The above description is only a preferred embodiment of the present invention, and in the actual deployment process of the present invention, the operation may not be completely performed according to the above embodiments due to the difference of the requirements of the production process, so that the embodiments of the present invention should not be construed as limiting the present invention. It should be noted that, for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should be considered to be within the effective protection scope of the present invention.
Claims (10)
1. The utility model provides an automatic filter screen dust collector of clearance is equipped with filter screen, its characterized in that in air pipe:
an air inlet is arranged in front of the filter screen, an air nozzle communicated with high-pressure airflow is arranged behind the filter screen, the air nozzle faces the front of the filter screen, a pulse valve is arranged behind the air nozzle, and the pulse valve is opened or closed under the control of a control circuit so as to control the opening and closing of the high-pressure airflow;
a dust collecting cavity which is vertically closed is arranged in front of the filter screen and below the air inlet;
the dust collecting cavity is provided with an openable dust removing opening.
2. The self-cleaning screen dust collector of claim 1, wherein:
when the pulse valve is opened, the high-pressure airflow ejected from the air nozzle has a wind pressure greater than the normal wind pressure in the ventilation pipeline.
3. The self-cleaning screen dust collector of claim 1, wherein:
the high-pressure air flow communicated with the air nozzle is provided by a booster pump.
4. The self-cleaning screen dust collector of claim 1, wherein:
the control circuit is a program control circuit.
5. The self-cleaning screen dust collector of claim 1, wherein:
the control circuit also comprises a photosensitive induction circuit, and a photosensitive probe and a luminous source which are connected with the photosensitive induction circuit are positioned at two sides of the filter screen.
6. The self-cleaning screen dust collector of claim 1, wherein:
the control circuit also comprises an air pressure sensing circuit, and air pressure probes are respectively arranged at two sides of the filter screen and connected with the air pressure sensing circuit.
7. The self-cleaning screen dust collector of claim 1, wherein:
the upper part of the dust chamber is provided with an elastic wind shield, the elastic wind shield is connected with the pipe wall of the dust chamber through a movable shaft, and the elastic wind shield is in a state of closing the dust chamber at ordinary times and turns downwards when being impacted by high-pressure airflow.
8. The self-cleaning screen dust collector of claim 1, wherein:
and a pressure dividing pipe is arranged in the middle of the dust accumulation cavity and is communicated with the air inlet interface.
9. The self-cleaning screen dust collector of claim 1, wherein:
the filter screen is obliquely arranged in the ventilating duct and is close to the air inlet interface;
an arc-shaped air baffle plate is arranged below the air inlet and is bent towards the filter screen; the length of the arc-shaped wind shield plate is not more than half of that of the ventilating duct.
10. The practical application of the automatic cleaning screen dust removing device according to claim 1 in an oven system of a tenter setting machine, wherein:
the ventilating pipeline is positioned on one vertical side of the oven and is connected with a recovery pipeline of the heat recovery exchanger;
a dust collecting cavity is formed below the ventilation pipeline by utilizing the top of the heat exchanger;
the pulse valve is communicated with a fresh air pipe which is communicated with the pressure pump and then communicated with the heat energy exchanger to output fresh air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392489.2U CN211536948U (en) | 2019-12-25 | 2019-12-25 | Automatic filter screen dust collector of clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392489.2U CN211536948U (en) | 2019-12-25 | 2019-12-25 | Automatic filter screen dust collector of clearance |
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| Publication Number | Publication Date |
|---|---|
| CN211536948U true CN211536948U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922392489.2U Active CN211536948U (en) | 2019-12-25 | 2019-12-25 | Automatic filter screen dust collector of clearance |
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| Country | Link |
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| CN (1) | CN211536948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473260A (en) * | 2020-11-12 | 2021-03-12 | 刘绮龙 | Cloth bag dust removal device |
-
2019
- 2019-12-25 CN CN201922392489.2U patent/CN211536948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112473260A (en) * | 2020-11-12 | 2021-03-12 | 刘绮龙 | Cloth bag dust removal device |
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Address after: 515000 No.3, Hehui highway, Hualin village, Longtian Town, Chaonan District, Shantou City, Guangdong Province Patentee after: Guangdong Lianhe Environmental Protection Technology Co.,Ltd. Address before: 515000 No.3, Hehui highway, Hualin village, Longtian Town, Chaonan District, Shantou City, Guangdong Province Patentee before: SHANTOU LIANHE ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |