Polyester particle dedusting vibrating screen

Abstract

The utility model discloses a polyester particle dedusting vibrating screen, which belongs to the technical field of particle dedusting equipment, and comprises a vibrating screen and a dedusting device, the dedusting device comprises a dust collecting barrel, a suction device is arranged on the dust collecting barrel, a dust collecting pipe is arranged between the dust collecting barrel and the vibrating screen, and a filter screen is arranged in the dust collecting barrel. And the filter screen is communicated with a filter screen backflushing device. According to the scheme, the dust removal device can remove dust generated in polyester particles in the screening process of the vibrating screen; the suction device can generate suction airflow in the vibrating screen, dust floating in the vibrating screen is sucked into the dust collecting barrel through the dust collecting pipe, and therefore the dust is prevented from overflowing into air to pollute the environment. The filter screen can prevent dust from blocking the suction device, the suction efficiency of the suction device is guaranteed, the filter screen backflushing device can reversely flush the dust attached to the filter screen into the dust collection barrel to be collected, and therefore the continuous dust removal effect of the dust removal screen is guaranteed.

Description

Technical Field

[0001] The utility model relates to a dust removal device, and more specifically, to a dust removal vibrating screen for polyester particles. Background Art

[0002] During the production process of thin films, in order to improve the anti-sticking property of the thin films, certain contents of inorganic substances such as silica with a particle size of several micrometers and antistatic agents are added, which generates more dust during the cutting of the slices. These dusts are extremely likely to generate low-molecular-weight polymers during the production of the cast film unit of polyester films, polluting the tungsten wire and the die lip. There may be a certain amount of dust in the production process of polyester particles, and it is necessary to clean, filter, and remove dust from the polyester particles. At present, there are some defects in the devices for filtering and removing dust from polyester particles, such as incomplete dust removal, insufficient particle cleanliness, reduction of particle quality, and decline of product quality, which cannot meet higher usage requirements.

[0003] For example: Chinese Patent Publication No. CN213762749U, Publication Date: July 23, 2021, the name of the utility model is a structure for dust removal of vibrating screen aggregate. This application discloses a dust removal screen structure, including a frame and a vibrating screen. A distribution bin is arranged below the vibrating screen. The distribution bin is divided into multiple discharge bins. A ventilation and dust suction pipeline is arranged at the discharge end of the vibrating screen. The inlet of each discharge bin is connected to the ventilation and dust suction pipeline, and the outlet of each discharge bin is connected to a first dust suction pipeline. The discharge bin located below the feed end of the vibrating screen is the first discharge bin. The first discharge bin has a V-shaped dust removal tank inside. Multiple rotating impellers are arranged above the V-shaped dust removal tank in the first discharge bin. A first dust discharge pipeline and a damper are arranged between the feed end of the vibrating screen and the first discharge bin. The first discharge bin is provided with a second dust discharge pipeline and a damper, the first dust discharge pipeline and the damper. This solution can control the overflow of dust when the aggregate leaves the bin, but there will still be some dust falling into the collection bin, and the dust removal efficiency is relatively low. Summary of the Utility Model

[0004] The utility model overcomes the problem of low dust removal efficiency of the existing device for polyester particles, and provides a dust removal vibrating screen for polyester particles. This solution can remove the dust in the polyester particles during the material drying process and continuously ensure the dust removal effect.

[0005] To solve the above technical problems, the present utility model adopts the following technical solutions: A polyester particle dust removal vibrating screen, comprising a vibrating screen and a dust removal device. The dust removal device includes a dust collection bucket, on which a suction device is provided. A dust collection pipe is provided between the dust collection bucket and the vibrating screen. A filter screen is provided inside the dust collection bucket, and the filter screen is connected to a filter screen backwashing device. In this solution, the dust removal device can remove dust generated in polyester particles during the screening process of the vibrating screen, thereby preventing dust from entering the material receiving outlet along with the polyester particles; the suction device can generate a suction airflow inside the vibrating screen, sucking the dust floating in the vibrating screen into the dust collection bucket through the dust collection pipe, thereby preventing dust from overflowing into the air and polluting the environment; the filter screen can prevent dust from clogging the suction device and ensure the suction efficiency of the suction device, while the filter screen backwashing device can reverse-flush the dust attached to the filter screen into the dust collection bucket for collection, thereby ensuring the continuous dust removal effect of the dust removal screen.

[0006] Preferably, a plurality of filter screens are provided, and the filter screens are vertically arranged cylindrical structures. The filter screens can isolate dust from entering the interior of the fan. Arranging multiple filter screens and designing them into a cylindrical structure can effectively increase the area of the filter screens, so that more dust can be adsorbed by the filter screens, making the filter screens not easily blocked and ensuring the circulation of the suction airflow.

[0007] Preferably, the filter screen backwashing device includes a filter screen backwashing pipe and a compressed air gas bag. The filter screen backwashing pipe connects the dust collection bucket and the compressed air gas bag, and a valve is provided on the filter screen backwashing pipe. The compressed air gas bag provides the gas source. The gas source is introduced into the filter screen through the filter screen backwashing pipe, and the gas source will flush the dust particles attached to the filter screen downward into the dust collection bucket for collection. The valve adopts an electromagnetic pulse valve, which can control the on-off of the filter screen backwashing pipe. Intermittently opening the valve can make the dust removal operation proceed orderly.

[0008] Preferably, the dust collection pipe is a flexible hose structure. The dust collection pipe is provided on the vibrating screen. In order to prevent the vibration of the vibrating screen from damaging the dust collection pipe, the dust collection pipe needs to adopt a flexible hose structure.

[0009] Preferably, the suction device is a centrifugal fan, and a fan outlet is provided on the centrifugal fan. The suction device adopts a centrifugal fan, and the fan outlet on the centrifugal fan can ensure the normal circulation of the suction airflow.

[0010] Preferably, the bottom of the dust collection bucket is conical, and a collection device is further provided at the bottom of the dust collection bucket. The conical shape of the bottom of the dust collection bucket is conducive to the dust falling into the collection device at the bottom. Moreover, the bottom of the dust collection bucket is a conical opening with a larger upper part and a smaller lower part, which can play a guiding role for the dust and facilitate the collection of the dust.

[0011] Preferably, a sealing plate is provided on the upper side of the vibrating screen, and the sealing plate is connected to the dust collecting pipe. The sealing plate on the upper side of the vibrating screen can prevent the dust in the vibrating screen from drifting into the air. Through holes are provided on the sealing plate for connecting the dust collecting pipe, and the dust in the vibrating screen is absorbed into the dust collecting bucket through the dust collecting pipe.

[0012] Preferably, a dust collecting groove is further provided at the bottom of the vibrating screen. The dust collecting groove is located at the bottom of the vibrating screen. When the vibrating screen is screening materials, some of the dust generated by the collision of polyester pellets will also fall to the bottom of the vibrating screen, and the dust collecting groove can collect the dust falling to the bottom to prevent the dust from mixing into the pellets and entering the discharge port.

[0013] Preferably, the vibrating screen is provided with a feed inlet and a discharge outlet. The feed inlet is arranged at the top of the vibrating screen, and the discharge outlet is arranged at the bottom of the vibrating screen. The position of the dust collecting groove is lower than the input position of the discharge outlet. The discharge outlet is used to output the dust-removed pellets, and the feed inlet is used to put in polyester pellets. The bottom position of the dust collecting groove is lower than the input position of the discharge outlet, that is, it can prevent dust from entering the discharge outlet along with the pellets.

[0014] Compared with the prior art, the beneficial effects of the present utility model are: (1) it can effectively reduce the dust in polyester pellets and improve the product quality; (2) it can also prevent the overflow of dust in the vibrating screen, and at the same time collect and process the dust to reduce environmental pollution; (3) it can ensure the continuous operation of the suction device and effectively prevent the dust from blocking the fan; (4) the structure is simple, easy to implement, and reduces the production and manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the present utility model.

[0016] Figure 2 is the top view of the present utility model.

[0017] Figure 3 is a schematic diagram of the dust collecting bucket and the filter screen backwashing device of the present utility model.

[0018] In the figure: 1. vibrating screen, 2. suction device, 3. dust collecting pipe, 4. filter screen, 5. filter screen backwashing device, 5.1. filter screen backwashing pipe, 5.2. compressed air gas bag, 5.3. valve, 6. fan outlet, 7. sealing plate, 8. dust collecting groove, 9. feed inlet, 10. discharge outlet, 11. frame, 12. dust collecting bucket, 13. vibrating motor, 14. support seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions of the present utility model will be further specifically described below through specific embodiments and in conjunction with the drawings.

[0020] Example 1: As Figures 1 to 3A polyester particle dust removal vibrating screen shown includes a vibrating screen 1. On both sides of the vibrating screen 1, there are frames 11 which span across the width direction of the vibrating screen 1. At the top of the frames 11 and above the vibrating screen 1, there is a suction device 2 and a dust removal device. The dust removal device includes a dust collection bucket 12 and a filter net 4 arranged inside the dust collection bucket 12. The dust collection bucket 12 is a cylindrical structure as a whole. The top of the dust collection bucket 12 is fixedly connected to the suction device 2 and they are together fixed to the top of the frames 11. In this solution, the dust removal device can remove the dust generated during the screening process of polyester pellets, thus preventing the dust from entering the material receiving outlet along with the polyester particles; the suction device 2 can generate a suction air flow inside the vibrating screen 1 and suck the dust floating inside the vibrating screen 1 into the dust collection bucket 12 through the dust collection pipe 3, thus preventing the dust from overflowing into the air and polluting the environment; the filter net 4 can prevent the dust from blocking the suction device 2 and ensure the suction efficiency of the suction device 2.

[0021] Specifically, the frame 11 is composed of four support frames and a top frame. The four support frames are evenly arranged on both sides of the vibrating screen 1, and the top frame is fixed on the four support frames. Thus, the dust removal device is located above the vibrating screen 1. And after the dust removal device is arranged, it is also necessary to keep a certain distance between the dust removal device and the vibrating screen 1 to avoid the vibrating screen 1 colliding with the dust removal device. There are support columns at the bottom of the vibrating screen 1, and elastic members are arranged between the support columns and the vibrating screen 1. There are also vibrating motors 13 on both sides of the vibrating screen 1. After the vibrating motors 13 work, under the action of the elastic members, the vibrating screen 1 will vibrate at a specified frequency to perform the screening work.

[0022] As Figure 1 Or Figure 3 shown, there are multiple filter nets 4. And since the dust collection bucket 12 is a cylindrical structure, the filter nets 4 are also annularly distributed inside the dust collection bucket 12; the filter net 4 is a cylindrical structure as a whole. The bottom of the filter net 4 is a closed mesh structure, while the top is hollow and connected to the top of the dust collection bucket 12. The mesh holes on the filter net 4 can isolate the dust particles generated during the screening process of polyester pellets; the bottom of the dust collection bucket 12 is conical. Specifically, the bottom of the dust collection bucket 12 is a tapered opening with a larger upper part and a smaller lower part, which can play a guiding role for the dust. The conical shape of the bottom of the dust collection bucket 12 is beneficial for the dust to fall into the collection device at the bottom, facilitating the collection of the dust.

[0023] Above the dust collection bucket 12, a suction device 2 is provided. Specifically, the suction device 2 uses a centrifugal fan. When the centrifugal fan operates, it will suck out the air inside the dust collection bucket 12, creating a negative pressure inside the dust collection bucket 12, thereby sucking the gas inside the vibrating screen 1, that is, sucking the dust inside the vibrating screen 1 into the dust collection bucket 12. Then, part of the dust directly falls to the bottom of the dust collection bucket 12, and another part of the dust is adsorbed on the mesh holes of the filter screen 4 and will also fall to the bottom of the dust collection bucket 12 as the dust increases. A dust collection port is provided at the bottom of the dust collection bucket 12, and the dust collection port is connected to a collection device (not shown in the figure). Specifically, the collection device can be a collection box or a collection bag. Among them, a fan outlet 6 is provided on the centrifugal fan, and the fan outlet 6 can ensure the normal flow of the suction air flow.

[0024] A filter screen backwashing device 5 is also provided outside the dust collection bucket 12. The filter screen backwashing device 5 includes a compressed air gas bag 5.2, a filter screen backwashing pipe 5.1, and a valve 5.3. A support seat 14 is also provided on the frame 11, and the compressed air gas bag 5.2 is provided on the support seat 14. One end of the filter screen backwashing pipe 5.1 is connected to the compressed air gas bag 5.2, and the other end of the filter screen backwashing pipe 5.1 is connected to the top of the dust collection bucket 12. After the dust removal vibrating screen works for a long time, a large amount of dust will adhere to the filter screen 4 inside the dust collection bucket 12, affecting the air flow effect of the filter screen 4. Therefore, the filter screen backwashing device 5 can reverse the dust adhering to the filter screen 4 into the dust collection bucket 12 for collection, thereby ensuring the continuous dust removal effect of the dust removal vibrating screen. Specifically, the compressed air gas bag 5.2 provides the air source, and the air source is introduced into the filter screen 4 through the filter screen backwashing pipe 5.1, and the air source will flush the dust particles adhering to the filter screen 4 downward into the dust collection bucket 12 for collection. A valve 5.3 is also provided on the filter screen backwashing pipe 5.1. The valve 5.3 uses an electromagnetic pulse valve and can control the on-off of the filter screen backwashing pipe 5.1. Intermittently opening the valve 5.3 can make the dust removal operation proceed in an orderly manner.

[0025] Example 2: As Figures 1 to 3A polyester particle dust removal vibrating screen shown in the figure includes a vibrating screen 1. On both sides of the vibrating screen 1, there are frames 11 which span across the width direction of the vibrating screen 1. At the top of the frame 11 and above the vibrating screen 1, there are a suction device 2 and a dust removal device. The dust removal device includes a dust collection bucket 12 and a filter screen 4 arranged inside the dust collection bucket 12. The dust collection bucket 12 is of a cylindrical structure as a whole. The top of the dust collection bucket 12 is fixedly connected to the suction device 2 and they are fixed together at the top of the frame 11. In this solution, the dust removal device can remove the dust generated during the screening of polyester pellets by the vibrating screen 1, thereby preventing the dust from entering the material receiving outlet along with the polyester particles; the suction device 2 can generate a suction airflow inside the vibrating screen 1, sucking the dust floating inside the vibrating screen 1 into the dust collection bucket 12 through the dust collection pipe 3, thereby preventing the dust from overflowing into the air and polluting the environment; the filter screen 4 can prevent the dust from blocking the suction device 2 and ensure the suction efficiency of the suction device 2.

[0026] Specifically, the frame 11 is composed of four support frames and a top frame. The four support frames are evenly arranged on both sides of the vibrating screen 1, and the top frame is fixed on the four support frames. Thus, the dust removal device is located above the vibrating screen 1. And after the dust removal device is arranged, it is also necessary to keep a certain distance between the dust removal device and the vibrating screen 1 to avoid the vibrating screen 1 colliding with the dust removal device. There are support columns at the bottom of the vibrating screen 1, and elastic members are arranged between the support columns and the vibrating screen 1. On both sides of the vibrating screen 1, there are also vibrating motors 13. After the vibrating motors 13 work, under the action of the elastic members, the vibrating screen 1 will vibrate at a specified frequency to perform the screening work.

[0027] As Figure 1 Or Figure 3 As shown in the figure, there are multiple filter screens 4. And since the dust collection bucket 12 is of a cylindrical structure, the filter screens 4 are also annularly distributed inside the dust collection bucket 12; the filter screen 4 is of a cylindrical structure as a whole. The bottom of the filter screen 4 is a closed mesh structure, while the top is hollow and connected to the top of the dust collection bucket 12. The mesh holes on the filter screen 4 can isolate the dust particles generated during the screening of polyester pellets; the bottom of the dust collection bucket 12 is conical. Specifically, the bottom of the dust collection bucket 12 is a tapered opening with a larger top and a smaller bottom, which can play a guiding role for the dust. The conical shape of the bottom of the dust collection bucket 12 is beneficial for the dust to fall into the collection device at the bottom, facilitating the collection of the dust.

[0028] Above the dust collection bucket 12, a suction device 2 is provided. Specifically, the suction device 2 uses a centrifugal fan. When the centrifugal fan operates, it will suck out the air inside the dust collection bucket 12, creating a negative pressure inside the dust collection bucket 12, thereby sucking in the gas inside the vibrating screen 1, that is, sucking the dust inside the vibrating screen 1 into the dust collection bucket 12. Then, a part of the dust directly falls to the bottom of the dust collection bucket 12, and another part of the dust is adsorbed on the mesh holes of the filter screen 4 and will also fall to the bottom of the dust collection bucket 12 as the dust accumulates. A dust collection port is provided at the bottom of the dust collection bucket 12, and the dust collection port is connected to a collection device (not shown in the figure). Specifically, the collection device can be a collection box or a collection bag. Among them, a fan outlet 6 is provided on the centrifugal fan, and the fan outlet 6 can ensure the normal flow of the suction air current.

[0029] A filter screen backwashing device 5 is also provided outside the dust collection bucket 12. The filter screen backwashing device 5 includes a compressed air gas bag 5.2, a filter screen backwashing pipe 5.1, and a valve 5.3. A support seat 14 is also provided on the frame 11, and the compressed air gas bag 5.2 is provided on the support seat 14. One end of the filter screen backwashing pipe 5.1 is connected to the compressed air gas bag 5.2, and the other end of the filter screen backwashing pipe 5.1 is connected to the top of the dust collection bucket 12. After the dust removal vibrating screen works for a long time, a relatively large amount of dust will adhere to the filter screen 4 inside the dust collection bucket 12, affecting the air flow effect of the filter screen 4. Therefore, through the filter screen backwashing device 5, the dust adhering to the filter screen 4 can be backwashed into the dust collection bucket 12 for collection, thereby ensuring the continuous dust removal effect of the dust removal vibrating screen. Specifically, the compressed air gas bag 5.2 provides the gas source, and the gas source is introduced into the filter screen 4 through the filter screen backwashing pipe 5.1, and the gas source will wash the dust particles adhering to the filter screen 4 downward into the dust collection bucket 12 for collection. A valve 5.3 is also provided on the filter screen backwashing pipe 5.1. The valve 5.3 uses an electromagnetic pulse valve and can control the on-off of the filter screen backwashing pipe 5.1. Intermittently opening the valve 5.3 can make the dust removal operation proceed orderly.

[0030] It should be noted that a flexible connection is adopted between the dust collection bucket 12 and the vibrating screen 1, that is, the dust collection pipe 3 is a flexible pipe structure. Specifically, the dust collection pipe 3 can adopt a corrugated pipe or a flexible pipe and other pipes that can deform. When the vibrating screen 1 is working, the vibrating screen 1 itself will generate vibration. Therefore, a rigid connection should not be adopted between the dust removal device and the vibrating screen 1, but a flexible connection is required to prevent the dust removal device from being damaged.

[0031] A sealing plate 7 structure is provided at the top of the vibrating screen 1. A through-hole structure is provided on the sealing plate 7, and the through-hole is communicated with the dust collection pipe 3. The sealing plate 7 on the upper side of the vibrating screen 1 can prevent the dust in the vibrating screen 1 from floating into the air. The through-hole on the sealing plate 7 is used to connect the dust collection pipe 3, and the dust in the vibrating screen 1 is absorbed into the dust collection bucket 12 through the dust collection pipe 3. It should be noted that the number of dust collection pipes 3 can be set to one or multiple, and the number of through-holes on the sealing plate 7 only needs to correspond to the number of dust collection pipes 3. Using multiple dust collection pipes 3 can increase the space for sucking dust and improve the dust removal efficiency.

[0032] Embodiment 3: As Figures 1 to 3 shown, a polyester particle dust removal vibrating screen includes a vibrating screen 1. Frame racks 11 are provided on both sides of the vibrating screen 1. The frame racks 11 span across the width direction of the vibrating screen 1. A suction device 2 and a dust removal device are provided at the top of the frame racks 11 and above the vibrating screen 1. The dust removal device includes a dust collection bucket 12 and a filter screen 4 provided in the dust collection bucket 12. The dust collection bucket 12 is of an overall cylindrical structure. The top of the dust collection bucket 12 is fixedly connected to the suction device 2 and they are fixedly mounted on the top of the frame racks 11 together. The dust removal device in this solution can remove dust generated in the polyester pellets during the screening process of the vibrating screen 1, thereby preventing the dust from entering the material receiving outlet along with the polyester particles; the suction device 2 can generate a suction airflow in the vibrating screen 1, sucking the dust floating in the vibrating screen 1 into the dust collection bucket 12 through the dust collection pipe 3, thereby preventing the dust from overflowing into the air and polluting the environment; the filter screen 4 can prevent the dust from clogging the suction device 2 and ensure the suction efficiency of the suction device 2.

[0033] Specifically, the frame rack 11 is composed of four support frames and a top frame. The four support frames are evenly arranged on both sides of the vibrating screen 1, and the top frame is fixed to the four support frames. Thus, the dust removal device is located above the vibrating screen 1. And after the dust removal device is arranged, it is also necessary to keep a certain distance between the dust removal device and the vibrating screen 1 to avoid the vibrating screen 1 colliding with the dust removal device. Support columns are provided at the bottom of the vibrating screen 1, and elastic members are provided between the support columns and the vibrating screen 1. Vibration motors 13 are also provided on both sides of the vibrating screen 1. After the vibration motors 13 work, under the action of the elastic members, the vibrating screen 1 will vibrate at a specified frequency to perform the screening work.

[0034] As Figure 1 or Figure 3As shown, there are multiple filter meshes 4. Since the dust collection bucket 12 has a cylindrical structure, the filter meshes 4 are also annularly distributed inside the dust collection bucket 12. The filter mesh 4 as a whole has a cylindrical structure. The bottom of the filter mesh 4 is a closed mesh structure, while the top is hollow and connected to the top of the dust collection bucket 12. The meshes on the filter mesh 4 can isolate the dust particles generated during the screening process of polyester pellets. The bottom of the dust collection bucket 12 is conical. Specifically, the bottom of the dust collection bucket 12 is a tapered opening that is larger at the top and smaller at the bottom, which can guide the dust. The conical shape of the bottom of the dust collection bucket 12 is conducive to the dust falling into the collection device at the bottom, facilitating the collection of dust.

[0035] Above the dust collection bucket 12, a suction device 2 is provided. Specifically, the suction device 2 uses a centrifugal fan. When the centrifugal fan operates, it will suck out the air inside the dust collection bucket 12, creating a negative pressure inside the dust collection bucket 12, thereby sucking the gas inside the vibrating screen 1, that is, sucking the dust inside the vibrating screen 1 into the dust collection bucket 12. Then, a part of the dust directly falls to the bottom of the dust collection bucket 12, and another part of the dust is adsorbed on the meshes of the filter mesh 4 and will also fall to the bottom of the dust collection bucket 12 as the dust accumulates. At the bottom of the dust collection bucket 12, a dust collection port is provided, and the dust collection port is connected to a collection device (not shown in the figure). Specifically, the collection device can be a collection box or a collection bag. Among them, a fan outlet 6 is provided on the centrifugal fan, and the fan outlet 6 can ensure the normal flow of the suction air current.

[0036] Outside the dust collection bucket 12, a filter mesh backwashing device 5 is also provided. The filter mesh backwashing device 5 includes a compressed air gas bag 5.2, a filter mesh backwashing pipe 5.1, and a valve 5.3. On the frame 11, a support seat 14 is also provided, and the compressed air gas bag 5.2 is provided on the support seat 14. One end of the filter mesh backwashing pipe 5.1 is connected to the compressed air gas bag 5.2, and the other end of the filter mesh backwashing pipe 5.1 is connected to the top of the dust collection bucket 12. After the dust removal vibrating screen works for a long time, a relatively large amount of dust will adhere to the filter mesh 4 inside the dust collection bucket 12, affecting the air flow effect of the filter mesh 4. Therefore, through the filter mesh backwashing device 5, the dust adhering to the filter mesh 4 can be reversely flushed into the dust collection bucket 12 for collection, thereby ensuring the continuous dust removal effect of the dust removal vibrating screen. Specifically, the compressed air gas bag 5.2 provides the gas source, and the gas source is introduced into the filter mesh 4 through the filter mesh backwashing pipe 5.1, and the gas source will flush the dust particles adhering to the filter mesh 4 downward into the dust collection bucket 12 for collection. A valve 5.3 is also provided on the filter mesh backwashing pipe 5.1. The valve 5.3 uses an electromagnetic pulse valve and can control the on-off of the filter mesh backwashing pipe 5.1. Intermittently opening the valve 5.3 can make the dust removal operation proceed in an orderly manner.

[0037] It should be noted that a flexible connection is adopted between the dust collection bucket 12 and the vibrating screen 1, that is, the dust collection pipe 3 is of a flexible pipe structure. Specifically, the dust collection pipe 3 can be made of corrugated pipe or flexible pipe and other pipes that can deform. When the vibrating screen 1 is working, the vibrating screen 1 itself will generate vibrations. Therefore, a rigid connection should not be adopted between the dust removal device and the vibrating screen 1, but a flexible connection is required to prevent the dust removal device from being damaged.

[0038] A sealing plate 7 structure is provided at the top of the vibrating screen 1. A through-hole structure is provided on the sealing plate 7, and the through-hole is communicated with the dust collection pipe 3. The sealing plate 7 on the upper side of the vibrating screen 1 can block the dust in the vibrating screen 1 from drifting into the air. A through-hole is provided on the sealing plate 7 for connecting the dust collection pipe 3, and the dust in the vibrating screen 1 is absorbed into the dust collection bucket 12 through the dust collection pipe 3. It should be noted that the number of dust collection pipes 3 can be set to one or multiple, and the number of through-holes on the sealing plate 7 only needs to correspond to the number of dust collection pipes 3. Using multiple dust collection pipes 3 can increase the space for sucking dust and improve the dust removal efficiency.

[0039] The vibrating screen 1 is provided with a feed inlet 9 and a discharge outlet 10. Among them, there is one feed inlet 9 and three discharge outlets 10. The feed inlet 9 is arranged at Figure 1 the upper right corner position shown in the figure, and the three discharge outlets 10 are arranged at Figure 1 the lower left corner position shown in the figure. The polyester pellets enter the vibrating screen 1 from the feed inlet 9, and then move and stratify on the screen of the vibrating screen 1 and fall into different discharge outlets 10 to obtain pellets of different qualities. A dust collection trough 8 is provided at the bottom of the vibrating screen 1. When the vibrating screen 1 is screening materials, some of the dust generated by the collision of the polyester pellets will also fall to the bottom of the vibrating screen 1, and the dust collection trough 8 can collect the dust that has fallen to the bottom, preventing the dust from mixing into the pellets and entering the discharge outlet 10. The bottom position of the dust collection trough 8 is lower than the input position of the discharge outlet 10, that is, it can prevent the dust from entering the discharge outlet 10 along with the pellets.

Claims

1. A polyester particle dust removal vibrating screen, characterized in that, It includes a vibrating screen and a dust removal device. The dust removal device includes a dust collection bucket, on which a suction device is provided. A dust collection pipe is provided between the dust collection bucket and the vibrating screen. A filter screen is provided in the dust collection bucket, and the filter screen is connected to a filter screen backwashing device.

2. The polyester particle dust removal vibrating screen according to claim 1, characterized in that, There are several of the filter screens, and the filter screens are vertically arranged cylindrical structures.

3. The polyester particle dust removal vibrating screen according to claim 2, characterized in that, The filter screen backwashing device includes a filter screen backwashing pipe and a compressed air gas bag. The filter screen backwashing pipe connects the dust collection bucket and the compressed air gas bag, and a valve is provided on the filter screen backwashing pipe.

4. A polyester particle dust removal vibrating screen according to claim 1, characterized in that, The dust collection pipe is of a flexible hose structure.

5. The polyester particle dust removal vibrating screen according to claim 1, characterized in that, The suction device is a centrifugal fan, and a fan outlet is provided on the centrifugal fan.

6. A polyester particle dust removal vibrating screen according to any one of claims 1 to 5, characterized in that The bottom of the dust collection bucket is conical, and a collection device is also provided at the bottom of the dust collection bucket.

7. A polyester particle dust removal vibrating screen according to claim 1, characterized in that, A sealing plate is provided on the upper side of the vibrating screen, and the sealing plate is connected to the dust collection pipe.

8. A polyester particle dust removal vibrating screen according to claim 1, characterized in that, A dust collection trough is also provided at the bottom of the vibrating screen.

9. A polyester particle dust removal vibrating screen according to claim 8, characterized in that, The vibrating screen is provided with a feed inlet and a discharge outlet. The feed inlet is provided at the top of the vibrating screen, and the discharge outlet is provided at the bottom of the vibrating screen. The position of the dust collection trough is lower than the input end position of the discharge outlet.

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