Workshop dust removal equipment and treatment method for PVC plate

Abstract

The application discloses a workshop dust removal equipment and treatment method for PVC plates, which comprises a dust suction hood corresponding to the upper side of a feeding opening of the PVC plate, wherein the dust suction hood is arranged obliquely on the upper side of the feeding opening, a feeding groove is formed between the dust suction hood and the feeding opening, a dust suction fan is communicated with the tail end of the dust suction hood through a pipeline, a dust removal assembly is arranged between the dust suction fan and the dust suction hood, the dust removal assembly comprises an air inlet main pipe connected with the dust suction hood and an air outlet main pipe connected with the dust suction fan, two branch pipes are arranged in parallel between the air inlet main pipe and the air outlet main pipe, an electric control valve is arranged between the two branch pipes and the air inlet main pipe, a filter assembly is arranged between the two branch pipes and the air outlet main pipe, a discharge opening matched with the filter assembly is arranged at the bottom of the branch pipe, and a sealing valve capable of sealing the discharge opening is arranged in the discharge opening. The application has the advantages of improving the reliability of the filter device, facilitating the reuse of raw materials and achieving good dust removal effect.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of decorative plate production, in particular to a workshop dust removal equipment and treatment method for PVC plate. BACKGROUND

[0002] PVC decorative plate is usually produced by a decorative plate production line, for example, the production process of energy-saving and environment-friendly plate disclosed in CN201610473850.2 published on November 9, 2016, which comprises the following steps: raw material mixing, heating and melting, extrusion, pre-cooling, pattern forming, cooling and solidification, rough cutting and traction cutting. However, it is found in actual production that the dust in the workshop is very large, which causes a poor working environment and affects the health of workers. The conventional workshop dust removal equipment is difficult to apply in the workshop of PVC plate because the PVC plate is in powder form, and the particles after being raised remain small. There are two ways to remove the powder: 1. filtering through a filter screen; the disadvantage is that the filter screen is easily blocked due to the high content of powder in the production of PVC plate, thereby affecting the filtering efficiency and causing insufficient dust removal; 2. blowing the powder into cold water to wet it; the disadvantage is that the powder of raw materials is inconvenient to reuse, which increases the production cost, and the impeller of the fan is directly impacted by the powder, affecting the service life of the fan impeller. SUMMARY

[0003] Based on the above-mentioned deficiencies in the prior art, the application provides a workshop dust removal equipment and treatment method for PVC plate, which can improve the reliability of the filtering device, facilitate the reuse of raw materials, and has good dust removal effect.

[0004] In order to achieve the above-mentioned application purposes, the application adopts the following technical solutions.

[0005] A workshop dust removal equipment for PVC plate, comprising a dust suction cover corresponding to the upper side of a feeding port of the PVC plate, the dust suction cover being inclinedly arranged at the upper side of the feeding port, a feeding groove being formed between the dust suction cover and the feeding port, a dust suction fan being connected to the tail end of the dust suction cover through a pipeline, a dust removal assembly being arranged between the dust suction fan and the dust suction cover, the dust removal assembly comprising an air inlet main pipe connected to the dust suction cover and an air outlet main pipe connected to the dust suction fan, two branch pipes being connected in parallel between the air inlet main pipe and the air outlet main pipe, an electric control valve being arranged between the two branch pipes and the air inlet main pipe, a filter assembly being arranged between the two branch pipes and the air outlet main pipe, a discharge port matched with the filter assembly being arranged at the bottom of the branch pipe, and a sealing valve capable of sealing the discharge port being arranged in the discharge port.

[0006] The application is applied to the feeding link of PVC plate production, and the dust raised during feeding is the main dust source of the PVC plate production workshop. Dust removal of this link can complete the workshop dust removal very efficiently. In the application, the two branch pipes can be switched on and off with the air inlet pipe through the electric control valve. When the air inlet pipe and the corresponding branch pipe are closed, the airflow entering from the other branch pipe will be backflushed into the corresponding branch pipe, thereby completing the backflush cleaning of the filter assembly, thereby improving the reliability of the use of the filter assembly, prolonging the service life of the filter assembly, and the material filtered by the filter assembly can be collected from the discharge port for reuse, which is convenient and improves the environmental protection of the PVC plate.

[0007] As preferred, the shape of the branch pipe is circular arc, and the two branch pipes are spliced into a whole circle. The air inlet pipe and the air outlet pipe are coaxially arranged, and the air inlet pipe and the air outlet pipe are located in the radial direction of the whole circle. The two branch pipes are arranged in whole, which facilitates the smooth flow of the airflow in the other branch pipe into the branch pipe isolated from the air inlet pipe under the suction of the air outlet pipe when one of the branch pipes is isolated from the air inlet pipe, completes the backflush of the filter screen corresponding to the branch pipe isolated from the air inlet pipe, and facilitates the discharging of the branch pipe isolated from the air inlet pipe.

[0008] As preferred, the filter assembly comprises a filter frame, and three filter screens in the shape of a regular triangular prism are arranged in the filter frame. The three filter screens correspond to the horizontal cross sections of the air outlet pipe and the two branch pipes, respectively. The intersection of the two branch pipes is provided with an upper cover plate and a lower cover plate arranged oppositely. The intersection of the two branch pipes is provided with connecting holes for sealing connection with the upper cover plate and the lower cover plate, respectively. The filter frame comprises upper and lower rotating discs arranged oppositely. The upper and lower ends of the filter screens are fixed on the rotating discs. The rotating disc on the upper side of the filter frame is rotatably connected with the upper cover plate. The rotating disc on the lower side of the filter frame is separated from the lower cover plate. The three filter screens work cooperatively. Two of the filter screens can complete the filtration of the tail portions of the two branch pipes, respectively. The other filter screen plays a role of auxiliary secondary filtration. The filter frame is rotatably arranged, which facilitates the adjustment of the position of the filter screens and reduces the assembly difficulty.

[0009] As preferred, the upper end of the rotating disc on the upper side of the filter frame is provided with a rotating shaft rotatably connected with the upper cover plate. The outer portion of the upper cover plate is provided with an operating rod fixedly connected with the rotating shaft perpendicularly. The end portion of the operating rod is provided with a locking bolt. The rotating shaft can be operated through the operating rod, and the rotation of the filter frame can be completed. When the filter frame is rotated in place, i.e., the three filter screens correspond to the two branch pipes and the air outlet pipe, respectively, the operating rod is locked through the locking bolt, thereby ensuring the reliability of the position of the filter frame.

[0010] As preferred, the upper cover plate and the lower cover plate are threadedly connected with the corresponding connecting holes, respectively. The upper cover plate and the lower cover plate are respectively provided with sealing rings corresponding to the connecting holes. The connection of the upper cover plate and the lower cover plate corresponding to the positions of the branch pipes is convenient, and the sealing performance is reliable.

[0011] As preferred, the electric control valve comprises a valve plate arranged rotatably between the two branch pipes, the valve plate is connected with a driving motor, and the valve plate can seal and separate the air inlet manifold and any one of the branch pipes. The valve plate is convenient to operate, and the switching of the two branch pipes is convenient.

[0012] As preferred, a cleaning hole corresponding to the axis of the rotating disc is arranged between the rotating disc at the lower side of the filter frame and the lower cover plate, and a control valve capable of sealing the cleaning hole is arranged on the cleaning hole. The dust on the three filter screens of the filter frame, especially the filter screen corresponding to the air outlet manifold, is convenient to clean, and the reliability of the filter screen corresponding to the air outlet manifold is ensured.

[0013] As preferred, a discharging chute is arranged between the filter frame and the discharge port, the discharging chute is located at the bottom of the branch pipe, and the bottom surface of the discharging chute is arranged downwardly and inclined from the filter frame to the discharge port. The dust discharging is convenient.

[0014] As preferred, the cross-sectional shape of the branch pipe is a rounded rectangle. Stress concentration can be avoided, and the rotation of the filter frame, especially the arrangement of the filter screen, is convenient.

[0015] A processing method of the workshop dust removal equipment based on the above-mentioned PVC plate, comprising the following steps:

[0016] A. After the whole equipment is assembled, the electric control valve controls the air inlet manifold and one branch pipe to be communicated, the two branch pipes are defined as a first branch pipe and a second branch pipe, at this time, the first branch pipe is communicated, the sealing valve is closed, and when the material is added at the feeding port, the dust raised during the feeding process is sequentially passed through the air inlet manifold, the first branch pipe and the air outlet manifold, and is filtered between the first branch pipe and the air outlet manifold, and the dust is left in the first branch pipe;

[0017] B. After the first branch pipe is communicated for a period of time, the electric control valve controls the air inlet manifold and the second branch pipe to be communicated, and the dust raised during the feeding process is sequentially passed through the air inlet manifold, the second branch pipe and the air outlet manifold. When the airflow passes through the filter assembly, because the first branch pipe is sealed, part of the airflow in the second branch pipe is backflushed into the first branch pipe, the dust accumulated near the filter frame in the first branch pipe is blown away from the filter frame, and the backflushing of the filter screen corresponding to the first branch pipe is completed, so that the filter screen corresponding to the first branch pipe is prevented from being blocked;

[0018] C. After the second branch pipe is communicated for a period of time, the electric control valve controls the air inlet manifold and the first branch pipe to be communicated, and the dust raised during the feeding process is sequentially passed through the air inlet manifold, the first branch pipe and the air outlet manifold. The airflow in the first branch pipe backflushes the second branch pipe;

[0019] D. The feeding process is circularly performed in steps B and C;

[0020] E, when the feeding port is not fed, the closed valve is opened, under the action of the inclined guide of the discharging chute and gravity, most of the dust in the first branch pipe and the second branch pipe flows out from the discharge port, the discharge port is provided with a material bag covering the discharge port, after the material bag is collected and stirred evenly, the component proportion is detected, after the component proportion is adjusted according to the formula of the PVC plate, the dust collected by the material bag is added to the feeding port for reuse.

[0021] The dust raised in the feeding process can be conveniently recycled and reused, and the environmental protection performance is high.

[0022] The application has the following beneficial effects: 1, the reliability of the filter assembly is high; 2, the raw material is convenient to reuse; 3, the dust removal effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a structural schematic diagram of the application.

[0024] Fig. 2 is a top view of the dust removal assembly after being cut open.

[0025] Fig. 3 is a structural schematic diagram of the filter frame and the upper cover plate and the lower cover plate after being assembled.

[0026] Fig. 4 is a structural schematic diagram of the filter frame.

[0027] In the figure: feeding port 1 dust cover 2 feeding groove 3 dust suction fan 4 air inlet 5 air outlet 6 dust removal assembly 7 air inlet main pipe 8 air outlet main pipe 9 branch pipe 10 first branch pipe 101 second branch pipe 102 electric control valve 11 filter assembly 12 filter frame 13 discharging chute 14 discharge port 15 filter screen 16 rotating disc 17 vertical rod 18 connecting sliding block 19 rotating shaft 20 operating rod 21 locking bolt 22 upper cover plate 23 lower cover plate 24 cleaning hole 25. DETAILED DESCRIPTION

[0028] The application will be further described below in combination with the drawings and specific embodiments.

[0029] Example 1,

[0030] As Figs. 1 to 4The application discloses a PVC plate workshop dust removal equipment, which comprises a dust hood 2 corresponding to the upper side of a PVC plate feeding port 1, wherein the dust hood 2 is arranged in an inclined mode on the upper side of the feeding port 1. The included angle alpha between the dust hood 2 and the axis of the feeding port 1 is between 110 degrees and 160 degrees, and in the embodiment, the alpha is 150 degrees. A feeding groove 3 is formed between the dust hood 2 and the feeding port 1. The tail end of the dust hood 2 is connected with a dust removal fan 4 through a pipeline. A dust removal assembly 7 is arranged between the dust removal fan 4 and the dust hood 2. The dust removal assembly 7 comprises an air inlet main pipe 8 connected with the dust hood 2 and an air outlet main pipe 9 connected with the dust removal fan 4. The dust removal fan 4 comprises an air inlet 5 and an air outlet 6. The air inlet 5 is connected with the air outlet main pipe 9. The air outlet pipe is connected with a water pool through a pipeline. When the dust removal assembly 7 fails or has poor effect, the water in the water pool can be used to wet the adsorbed powder to serve as a backup or strengthening scheme for dust removal. Two branch pipes 10 are arranged in parallel between the air inlet main pipe 8 and the air outlet main pipe 9. The two branch pipes 10 are arc-shaped and are spliced into a whole circle. The cross section of the branch pipe 10 is a rounded rectangle. The air inlet main pipe 8 and the air outlet main pipe 9 are coaxially arranged and are located on the radial direction of the whole circle. An electric control valve 11 is arranged between the two branch pipes 10 and the air inlet main pipe 8. The electric control valve 11 comprises a valve plate arranged in a rotating mode between the two branch pipes 10. The valve plate is connected with a driving motor. The electric control valve 11 forms a switch structure similar to a single-blade double-throw structure. The valve plate can seal and separate the air inlet main pipe 8 and any one of the branch pipes 10. A sealing ring is arranged on the circumferential side of the valve plate. A filter assembly 12 is arranged between the two branch pipes 10 and the air outlet main pipe 9. The filter assembly 12 comprises a filter frame 13. Three filter screens 16 are arranged in a regular triangular prism mode in the filter frame 13. The three filter screens 16 respectively shield the horizontal cross sections of the air outlet main pipe 9 and the two branch pipes 10. An upper cover plate 23 and a lower cover plate 24 are arranged in an opposite mode at the junction of the two branch pipes 10. Connection holes are respectively arranged in the upper cover plate 23 and the lower cover plate 24 and are sealingly connected with the two branch pipes 10. The filter frame 13 comprises two rotating discs 17 arranged in an opposite mode. The upper and lower ends of the filter screens 16 are fixed on the rotating discs 17. A vertical rod 18 corresponding to the side edges of the filter screens 16 is fixed between the two rotating discs 17. The rotating disc 17 on the upper side of the filter frame 13 is rotationally connected with the upper cover plate 23. Three arc-shaped connection sliding blocks 19 are arranged on the upper end face of the rotating disc 17 on the upper side of the filter frame 13. An annular sliding groove is arranged on the bottom of the upper cover plate 23 and is matched with the connection sliding blocks 19. The rotating disc 17 on the upper side of the filter frame 13 is rotationally connected with the upper cover plate 23 through the connection sliding blocks 19. The rotating disc 17 on the lower side of the filter frame 13 is separated from the lower cover plate 24. The upper cover plate 23 and the lower cover plate 24 are respectively screw-connected with the connection holes. The lower cover plate 24 is screw-connected with the corresponding connection hole and is automatically pressed against the lower end of the rotating disc 17 on the lower side of the filter frame 13 after being screwed in place.The rotating disc 17 at the lower side of the filter frame 13 and the lower cover plate 24 are provided with a cleaning hole 25 corresponding to the axis of the rotating disc 17, and the cleaning hole 25 is provided with a control valve capable of sealing the cleaning hole 25. The upper cover plate 23 and the lower cover plate 24 are provided with protrusions or recesses on the end faces corresponding to the outside of the branch pipe 10 to facilitate the rotating operation, disassembly and assembly of the upper cover plate 23 and the lower cover plate 24.

[0031] The upper end of the rotating disc 17 at the upper side of the filter frame 13 is provided with a rotating shaft 20 rotatably connected with the upper cover plate 23 through a bearing, and the outside of the upper cover plate 23 is provided with an operating rod 21 fixedly connected with the rotating shaft 20, and the end of the operating rod 21 is provided with a locking bolt 22. The rotating adjustment and position adjustment of the filter frame 13 are facilitated, and subsequent maintenance is facilitated. The bottom of the branch pipe 10 is provided with a discharge port 15 matched with the filter assembly 12, and the airflow entering the intake manifold 8 will first pass above the discharge port 15 and then flow to the filter frame 13. A discharge chute 14 is arranged between the filter frame 13 and the discharge port 15, and the discharge chute 14 is located at the bottom of the branch pipe 10, and the bottom surface of the discharge chute 14 is inclined downward from the filter frame 13 to the discharge port 15. The discharge port 15 is provided with a sealing valve capable of sealing the discharge port 15.

[0032] Example 2,

[0033] A processing method of the workshop dust removal equipment based on the above-mentioned PVC plate, comprising the following steps:

[0034] A, after the whole equipment is assembled, the electric control valve 11 controls the communication between the intake manifold 8 and one branch pipe 10, and the two branch pipes 10 are defined as a first branch pipe 101 and a second branch pipe 102, at this time the first branch pipe 101 is communicated, and the sealing valve is closed, when the material is added at the feeding port 1, the dust raised in the feeding process passes through the intake manifold 8, the first branch pipe 101 and the exhaust manifold 9 in turn, and is filtered between the first branch pipe 101 and the exhaust manifold 9, and the dust is left in the first branch pipe 101;

[0035] B, after the first branch pipe 101 is communicated for a period of time, the electric control valve 11 controls the communication between the intake manifold 8 and the second branch pipe 102, and the dust raised in the feeding process passes through the intake manifold 8, the second branch pipe 102 and the exhaust manifold 9 in turn, and when the airflow passes through the filter assembly 12, because the first branch pipe 101 is sealed, part of the airflow in the second branch pipe 102 is backflushed into the first branch pipe 101, the dust accumulated near the filter frame 13 in the first branch pipe 101 is blown away from the filter frame 13, and the backflushing of the filter screen 16 corresponding to the first branch pipe 101 is completed, avoiding the blockage of the filter screen 16 corresponding to the first branch pipe 101;

[0036] C. After the second branch pipe 102 is open for a period of time, the electric control valve 11 controls the communication between the air inlet pipe 8 and the first branch pipe 101. The dust raised during the charging process passes through the air inlet pipe 8, the first branch pipe 101 and the air outlet pipe 9 in turn. The airflow in the first branch pipe 101 backflushes the second branch pipe 102;

[0037] D. The charging process is repeated in steps B and C. The open time of the first branch pipe 101 and the second branch pipe 102 can be the same, or the dust content can be monitored by setting a powder concentration detector in the air outlet pipe 9. When the dust content in the filtered airflow reaches a certain level, steps B or C are automatically performed.

[0038] E. When the charging port 1 is not charging, the sealing valve is opened. Under the action of the inclined guide of the discharge chute 14 and gravity, most of the dust in the first branch pipe 101 and the second branch pipe 102 flows out from the discharge port 15. The discharge port 15 is provided with a material bag covering the discharge port 15. After the material bag is collected and evenly stirred, the ingredient ratio is detected. According to the formula of the PVC plate, the ingredient ratio is adjusted. After the ingredient ratio is adjusted, the dust collected in the material bag is added to the charging port 1 for reuse.

Claims

1. A plant dust removal apparatus for PVC sheets, characterized in that, The dust cover corresponds to the upper side of the feeding port of the PVC plate, is obliquely arranged at the upper side of the feeding port, and forms a feeding groove between the dust cover and the feeding port. The tail end of the dust cover is connected with a dust suction fan through a pipeline. A dust removal assembly is arranged between the dust suction fan and the dust cover. The dust removal assembly comprises an air inlet main pipe connected with the dust cover and an air outlet main pipe connected with the dust suction fan. Two branch pipes are arranged in parallel between the air inlet main pipe and the air outlet main pipe. An electric control valve is arranged between the two branch pipes and the air inlet main pipe. A filter assembly is arranged between the two branch pipes and the air outlet main pipe. A discharge port matched with the filter assembly is arranged at the bottom of the branch pipe. A sealing valve capable of sealing the discharge port is arranged in the discharge port. The filter assembly comprises a filter frame. Three filter screens in the shape of a regular triangular prism are arranged in the filter frame. The three filter screens correspond to the horizontal sections of the air outlet main pipe and the two branch pipes, respectively. An upper cover plate and a lower cover plate are arranged opposite to each other at the junction of the two branch pipes. Connection holes for sealing connection of the upper cover plate and the lower cover plate are arranged at the junction of the two branch pipes. The filter frame comprises upper and lower rotating discs. The upper and lower ends of the filter screens are fixed to the rotating discs. The rotating disc at the upper side of the filter frame is rotationally connected with the upper cover plate. The rotating disc at the lower side of the filter frame is separated from and abuts against the lower cover plate. A discharging groove is arranged between the filter frame and the discharge port. The discharging groove is located at the bottom of the branch pipe. The bottom surface of the discharging groove is obliquely downward arranged from the filter frame to the discharge port.

2. The plant dust removal equipment for PVC sheet material according to claim 1, characterized in that, The shape of the branch pipe is a circular arc. The two branch pipes are spliced into a whole circle. The air inlet main pipe and the air outlet main pipe are coaxially arranged. The air inlet main pipe and the air outlet main pipe are located on the radial direction of the whole circle.

3. The plant dust removal equipment for PVC sheet material according to claim 1, characterized in that, The upper end of the rotating disc at the upper side of the filter frame is provided with a rotating shaft rotationally connected with the upper cover plate. An operating rod is fixedly connected with the rotating shaft outside the upper cover plate. A locking bolt is arranged at the end of the operating rod.

4. The plant dust removal device for PVC sheet material according to claim 3, characterized in that, The upper cover plate and the lower cover plate are respectively threadedly connected with the corresponding connection holes. The upper cover plate and the lower cover plate are respectively provided with sealing rings corresponding to the connection holes.

5. The plant dust removal equipment for PVC sheet material according to claim 1 or 2, characterized in that, The electric control valve comprises a valve plate rotationally arranged between the two branch pipes. The valve plate is connected with a driving motor. The valve plate can seal and separate the air inlet main pipe and any one of the branch pipes.

6. The plant dust removal equipment for PVC sheet material according to claim 1, characterized in that, A cleaning hole corresponding to the axis of the rotating disc is arranged between the rotating disc at the lower side of the filter frame and the lower cover plate. A control valve capable of sealing the cleaning hole is arranged on the cleaning hole.

7. The plant dust removal apparatus for PVC sheets according to claim 1 or 2, characterized in that, The cross section of the branch pipe is a rounded rectangle.

8. A method of treating a plant dusting apparatus based on the PVC sheet material according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: A. After the whole equipment is assembled, the electric control valve controls the air inlet main pipe and one of the branch pipes to be communicated. The two branch pipes are defined as a first branch pipe and a second branch pipe. At this time, the first branch pipe is communicated, and the sealing valve is closed. When the feeding port is fed, the dust suction fan is turned on. The dust raised during the feeding process is sequentially passed through the air inlet main pipe, the first branch pipe and the air outlet main pipe, and is filtered between the first branch pipe and the air outlet main pipe. The dust is left in the first branch pipe. B. After the first branch pipe is open for a period of time, the electric control valve controls the communication between the intake manifold and the second branch pipe. The dust raised during the feeding process passes through the intake manifold, the second branch pipe and the outlet manifold in turn. When the airflow passes through the filter assembly, the airflow in the second branch pipe partially back-flows into the first branch pipe due to the sealing of the first branch pipe, which blows the dust accumulated near the filter frame away from the filter frame and completes the back-flushing of the filter screen corresponding to the first branch pipe, thereby avoiding the blockage of the filter screen corresponding to the first branch pipe; C. After the second branch pipe is open for a period of time, the electric control valve controls the communication between the intake manifold and the first branch pipe. The dust raised during the feeding process passes through the intake manifold, the first branch pipe and the outlet manifold in turn. The airflow in the first branch pipe back-flushes the second branch pipe; D. Steps B and C are repeated in a cycle during the feeding process; E. When there is no feeding at the feeding port, the sealing valve is opened. Under the action of the inclined guide and gravity of the discharge chute, most of the dust in the first branch pipe and the second branch pipe flows out from the discharge port. The discharge port is provided with a material bag covering the discharge port. After the material bag is collected and evenly stirred, the ingredient ratio is detected. After adjusting the ingredient ratio according to the formula of the PVC plate, the dust collected in the material bag is added to the feeding port for reuse.

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