Plate type separator with adjustable wind pressure

Abstract

When the air pressure difference is increased to a certain degree, a blocking cover can be pushed by the atmospheric pressure of the external environment to be automatically opened, so that the external atmosphere enters a cavity and a space, and the air pressure difference between the position and the front part of a filter sieve is reduced; the gas transmission component can automatically work after the output value of the pressure sensor reaches a certain value, so that external gas source gas or external atmosphere enters, and the difference value between the gas pressure at the cavity and the space and the gas pressure at the front part of the filter sieve can be reduced; and finally, the paper sheets or the paper scraps can fall off from the filter sieve and are discharged from the paper sheet or paper scrap outlet. In addition, gas spraying holes in the surface of a gas spraying pipe installed above the filter sieve can spray high-pressure gas and carry out back flushing on the filter sieve, so that paper pieces, paper scraps or impurities attached to the downward surface of the filter sieve fall off and fall towards a paper piece or paper scrap outlet in the lower end of the separation section, and therefore the filtering effect of the filter sieve is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of plate type separator structure improvement, in particular to a wind pressure adjustable plate type separator. Background Art

[0002] The plate separator is a commonly used device in waste paper processing. Its structure includes an inlet section 2, a separation section 3 and an air outlet section 6. The front end of the separation section is connected to the inlet section, and multiple inlets 1 are arranged at intervals on the inlet section. The rear end of the separation section is connected to the air outlet section, and one or more outlets 7 are arranged on the air outlet section. The lower end of the separation section is provided with a paper sheet or paper scrap outlet 8. The space in the separation section is divided into two spaces in front and back by the inclined filter screen 11 installed on the two side plates 9 of the separation section. Multiple inlets are respectively connected to a pipeline. The high-pressure airflow passing through the pipeline carries paper sheets or paper scraps of different sizes into the separation section from the inlet. The high-pressure airflow passes through the filter screen and leaves from the outlet (subsequent purification process), and the paper sheets or paper scraps it carries are blocked by the filter and finally discharged from the paper sheet or paper scrap outlet at the lower end of the separation section (transported to the baler). In actual use, it is found that after long-term use, the filter screen will be attached by dust or blocked by paper pieces or scraps. This will cause the gas pressure in the cavity 14 at the rear part of the filter screen to be lower than the pressure in the separation section space at the front part of the filter screen, that is, the front and back air pressure difference becomes larger. Once this situation occurs, the paper pieces or scraps carried by the high-pressure airflow will further adhere to and block the filter screen, and eventually the filter screen will be completely blocked, preventing the high-pressure airflow from passing through. In severe cases, the plate separator will fail to work. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a plate separator with adjustable wind pressure.

[0004] The technical solution adopted by the utility model to solve the technical problem is:

[0005] A plate separator with adjustable wind pressure comprises an inlet section, a separation section and an air outlet section, the front end and the rear end of the separation section are respectively connected to the inlet section and the air outlet section, an inclined filter screen is arranged in the separation section, and the filter screen divides the interior of the separation section into two spaces, characterized in that a protrusion is arranged outwardly on the top plate of the separation section above the separation section space on the rear side of the filter screen, and the cavity in the protrusion is directly connected to the separation section space on the rear side of the filter screen.

[0006] Furthermore: an opening is provided at any position of the protrusion, and a blocking cover which can cover the opening and swing toward the inside of the protrusion is hingedly mounted on the inner wall of the protrusion inside the opening.

[0007] Furthermore: the blocking cover can automatically open when the pressure inside the cavity and space is too low; the blocking cover can automatically close after the pressure inside the cavity and space changes.

[0008] Further: a hinge is arranged on the raised inner wall above the inside of the opening, and the hinge is connected to the upper end of the blocking cover; the blocking cover can be automatically closed under the action of gravity after the pressure inside the cavity and space changes.

[0009] Furthermore: an opening is provided at any position of the protrusion, the opening is connected to the gas source through a switch component, and a pressure sensor is installed inside the protrusion or inside the separation section; when the switch component is opened, the gas output by the gas source can enter the cavity and space.

[0010] Further: the switch component is an electric valve or a solenoid valve, and the control end of the electric valve or the solenoid valve and the output end of the pressure sensor are respectively connected to a control component.

[0011] Furthermore: an opening is provided at any position of the protrusion, the opening is connected to a gas delivery component, a pressure sensor is installed inside the protrusion or inside the separation section; when the gas delivery component is opened, gas can be delivered into the cavity and space.

[0012] Further: the gas delivery component is an air pump or a fan, and the control end of the air pump or the fan and the output end of the pressure sensor are respectively connected to a control component.

[0013] Furthermore: a plurality of jet pipes close to the filter screen are arranged in the separation section space at the rear of the filter screen, and a plurality of jet holes are arranged on the surface of the jet pipe facing the filter screen. The gas ejected from the jet holes can cause paper pieces, paper scraps or impurities attached to the downward surface of the filter screen to fall off from the surface of the filter screen and fall to the paper piece or paper scrap outlet at the lower end of the separation section.

[0014] Furthermore: four air injection pipes spaced from front to back are arranged in the separation section space above the filter screen, and any one side end of each air injection pipe extends to the outside of the separation section side plate and is connected to the air source.

[0015] The technical effects achieved by the utility model are:

[0016] In the utility model, the cavity inside the protrusion at the upper end of the separation section is directly connected to the space of the separation section behind the filter screen, and the cavity actually increases the total volume of the space, which can reduce the pressure difference before and after the filter screen to a certain extent. When the pressure difference increases to a certain extent, the structure on the protrusion is different, and its action process is different. The cover will automatically open under the push of the atmospheric pressure of the external environment, allowing the external atmosphere to enter the cavity and space, reducing the pressure difference between there and the front of the filter screen, and the gas transmission component will automatically work after the output value of the pressure sensor reaches a certain value, allowing the external gas source gas to enter or the external atmosphere to enter, which can also reduce the difference between the gas pressure in the cavity and space and the gas pressure in front of the filter screen, and finally allow the paper pieces or paper scraps to fall from the filter screen and be discharged from the paper pieces or paper scraps outlet. In addition, the jet holes on the surface of the jet pipe installed above the filter screen can spray high-pressure gas and backwash the filter screen, so that paper pieces, paper scraps or impurities attached to the downward surface of the filter screen fall off and fall to the paper piece or paper scrap outlet at the lower end of the separation section, thereby ensuring the filtering effect of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 yes Figure 1 sectional view of;

[0019] Figure 3 yes Figure 1 Left view of

[0020] Figure 4 is a schematic diagram of a raised cover;

[0021] Figure 5 It is a schematic diagram of a protruding arrangement of a gas delivery component;

[0022] Figure 6 yes Figure 5 Schematic diagram of the separation section after high-pressure gas cylinders are installed on both sides. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0024] A plate separator with adjustable wind pressure comprises an inlet section 2, a separation section 3 and an air outlet section 6, the front end and the rear end of the separation section are respectively connected to the inlet section and the air outlet section, a fixing plate 5 is respectively installed on the surface of the side plates 9 on both sides of the separation section with bolts, the two fixing plates are used to fix the inclined filter screen 11 inside the separation section, the upper end of the filter screen is tightly connected to the inner surface of the top plate 13, the two sides of the filter screen are tightly connected to the fixing plates respectively, the lower end of the filter screen is tightly connected to the inner surface of the end plate at the rear end of the separation section, the filter screen divides the interior of the separation section into two spaces, a protrusion 4 is arranged outwardly on the top plate of the separation section above the separation section space 14 on the rear side of the filter screen, and the cavity 12 in the protrusion is directly connected to the separation section space 14 on the rear side of the filter screen.

[0025] An outlet 7 is provided at each end of the gas outlet section, and each outlet is connected to a pipeline for the discharge of high-pressure gas. In actual use, only one pipeline is used, and the other pipeline is in a closed standby state. That is, when one pipeline needs to be inspected and cleaned, the other pipeline can be put into operation in time, avoiding the problem of production suspension caused by the maintenance of a single pipeline.

[0026] The protrusions can be cylindrical, cuboid or other three-dimensional shapes that are easy to process and assemble. The cavity inside the protrusion actually increases the total volume of the space, and reduces the air pressure difference between the space in front of the filter screen and the space behind it to a certain extent. When the air pressure difference is too large, additional means are needed for more effective regulation, such as Figure 4 , 5 As shown, there are three adjustment structures, which are described below.

[0027] 1. Cover structure

[0028] like Figure 4 As shown, an opening 16 is provided at any position of the side wall of the projection, and a blocking cover 17 which can cover the opening and can swing toward the inside of the projection is hingedly mounted on the inner wall of the projection inside the opening.

[0029] The cover can be opened automatically when the pressure inside the cavity and space is too low; the cover can be closed automatically after the pressure inside the cavity and space changes (after the pressure difference decreases). A hinge shaft 15 is provided on the raised inner wall above the opening, and the hinge shaft is connected to the upper end of the cover; the cover can be closed automatically under the action of gravity after the pressure inside the cavity and space changes (after the pressure difference decreases).

[0030] 2. If Figure 5As shown, an opening 16 is provided at any point of the side wall of the protrusion, and the opening is connected to one end 20 of the switch component 19 through a pipeline, and the other end of the switch component 19 is connected to the gas source through a pipeline 18, and a pressure sensor 21 is installed inside the protrusion or inside the separation section; when the switch component is opened, the high-pressure gas output by the gas source can enter the cavity and space, thereby reducing the pressure difference in the separation section space at the rear and front of the filter screen, and when the pressure in the space 14 rises to a certain value, the switch component is closed to cut off the high-pressure gas source from delivering the high-pressure gas.

[0031] The switch component is an electric valve or a solenoid valve, and the control end of the electric valve or the solenoid valve and the output end of the pressure sensor are respectively connected to a control component, which can use a PLC module, an industrial computer module or an integrated Android control system and other commonly used industrial equipment. The above switch component is preferably a solenoid valve.

[0032] 3. Such as Figure 5 As shown, an opening 16 is provided at any point of the side wall of the protrusion, and the opening is connected to one end 20 of the gas delivery component, and the other end 18 of the gas delivery component is connected to the ambient atmosphere. A pressure sensor 21 is installed inside the protrusion or inside the separation section; when the gas delivery component is opened, gas can be delivered into the cavity and space, thereby reducing the pressure difference in the separation section space at the rear and front of the filter screen. When the pressure in the space 14 rises to a certain value, the gas delivery component is closed to cut off the external gas.

[0033] The gas delivery component is an air pump or a fan, and the control end of the air pump or the fan and the output end of the pressure sensor are respectively connected to a control component, which can use a PLC module, an industrial computer module or an integrated Android control system and other equipment commonly used in industry. The gas delivery component is preferably a fan.

[0034] Figure 4 , 5 In the figure, the black arrows are the original gas passages, and the white arrows are the supplementary gas passages. The paper pieces or paper scraps 10 eventually fall from the outlet 8 and enter the waste paper baler or other processing equipment.

[0035] A plurality of air jet pipes 22 close to the filter screen are arranged in the separation section space at the rear of the filter screen. The surface of the air jet pipe facing the filter screen is provided with a plurality of air jet holes. The gas ejected from the air jet holes can make the paper pieces, paper scraps or impurities attached to the downward surface of the filter screen fall off from the filter screen surface and fall to the paper piece or paper scrap outlet at the lower end of the separation section. Figure 5 As shown, four jet pipes are arranged in the separation section space above the filter screen and spaced from front to back, and the end 23 on either side of each jet pipe extends to the outside of the separation section side plate and is connected to the air source. The end of the jet pipe is connected to the air source for reverse flushing through a pipeline, and the required valves, fans and other equipment can be installed on the pipeline.

[0036] The surface of the side plates on both sides of the separation section is as follows Figure 6 As shown, a high-pressure gas cylinder 26 is installed respectively, and the input end of the high-pressure gas cylinder is connected to the output end of the compressor, and the output end of the high-pressure gas cylinder is four as shown in the figure, and each output end is connected to the end 23 of the jet pipe extending out of the separation section through a branch pipe 25 and a control valve 24. That is, pressure detection sensors are installed on the shell of the high-pressure gas cylinder. These sensors are used to measure the pressure in the high-pressure gas cylinder. When the pressure is insufficient, the compressor supplies gas to the high-pressure gas cylinder until the pressure is restored. On the other hand, the control valve is opened regularly to allow the gas in the high-pressure gas cylinder to rush into the jet pipe and spray out through the jet hole to complete the purge of the filter screen.

[0037] In the above items 2 and 3, different set values ​​can be set for the pressure sensor, that is, the set values ​​that trigger the switch component and the gas transmission component to work or stop are different. This can be suitable for plate separators of different sizes, and can also be suitable for high-pressure gases that convey paper pieces or paper scraps using different pressures.

[0038] In the utility model, the cavity inside the protrusion at the upper end of the separation section is directly connected to the space of the separation section behind the filter screen, and the cavity actually increases the total volume of the space, which can reduce the pressure difference before and after the filter screen to a certain extent. When the pressure difference increases to a certain extent, the structure on the protrusion is different, and its action process is different. The cover will automatically open under the push of the atmospheric pressure of the external environment, allowing the external atmosphere to enter the cavity and space, reducing the pressure difference between there and the front of the filter screen, and the gas transmission component will automatically work after the output value of the pressure sensor reaches a certain value, allowing the external gas source gas to enter or the external atmosphere to enter, which can also reduce the difference between the gas pressure in the cavity and space and the gas pressure in front of the filter screen, and finally allow the paper pieces or paper scraps to fall from the filter screen and be discharged from the paper pieces or paper scraps outlet. In addition, the jet holes on the surface of the jet pipe installed above the filter screen can spray high-pressure gas and backwash the filter screen, so that paper pieces, paper scraps or impurities attached to the downward surface of the filter screen fall off and fall to the paper piece or paper scrap outlet at the lower end of the separation section, thereby ensuring the filtering effect of the filter screen.

Claims

1. A wind pressure adjustable plate separator, comprising an inlet section, a separation section and an air outlet section, wherein the front end and the rear end of the separation section are respectively connected to the inlet section and the air outlet section, and an inclined filter screen is arranged in the separation section, wherein the filter screen divides the interior of the separation section into two spaces, and wherein: A protrusion is arranged outwardly on the top plate of the separation section above the separation section space at the rear side of the filter screen, and the cavity in the protrusion is directly connected with the separation section space at the rear side of the filter screen.

2. The wind pressure adjustable plate separator according to claim 1, characterized in that: An opening is arranged at any one of the protrusions, and a blocking cover which can cover the opening and swing toward the inside of the protrusion is hingedly mounted on the inner wall of the protrusion inside the opening.

3. The wind pressure adjustable plate separator according to claim 2, characterized in that: The blocking cover can be automatically opened when the pressure inside the cavity and space is too low; the blocking cover can be automatically closed after the pressure inside the cavity and space changes.

4. The wind pressure adjustable plate separator according to claim 3, characterized in that: A hinge shaft is arranged on the raised inner wall above the inside of the opening, and the hinge shaft is connected to the upper end of the blocking cover; the blocking cover can be automatically closed under the action of gravity after the pressure inside the cavity and the space changes.

5. The wind pressure adjustable plate separator according to claim 1, characterized in that: An opening is provided at any position of the protrusion, and the opening is connected to the gas source through a switch component. A pressure sensor is installed inside the protrusion or inside the separation section; when the switch component is opened, the gas output by the gas source can enter the cavity and space.

6. The wind pressure adjustable plate separator according to claim 5, characterized in that: The switch component is an electric valve or a solenoid valve, and the control end of the electric valve or the solenoid valve and the output end of the pressure sensor are respectively connected to a control component.

7. The wind pressure adjustable plate separator according to claim 1, characterized in that: An opening is arranged at any position of the protrusion, the opening is connected to a gas delivery component, and a pressure sensor is installed inside the protrusion or inside the separation section; when the gas delivery component is opened, gas can be delivered into the cavity and space.

8. The wind pressure adjustable plate separator according to claim 7, characterized in that: The gas delivery component is an air pump or a fan, and the control end of the air pump or the fan and the output end of the pressure sensor are respectively connected to a control component.

9. A wind pressure adjustable plate separator according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8, characterized in that: A plurality of air jet pipes close to the filter screen are arranged in the separation section space at the rear of the filter screen, and a plurality of air jet holes are arranged on the surface of the air jet pipe facing the filter screen. The gas ejected from the air jet holes can make paper pieces, paper scraps or impurities attached to the downward surface of the filter screen fall off from the surface of the filter screen and fall to the paper piece or paper scrap outlet at the lower end of the separation section.

10. The wind pressure adjustable plate separator according to claim 9, characterized in that: Four air jet pipes spaced from front to back are arranged in the separation section space above the filter screen, and any one side end of each air jet pipe extends to the outside of the separation section side plate and is connected to the air source.

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