Powder coating sieving device and method

Abstract

The invention relates to the technical field of screening devices, in particular to a powder coating screening device and method.The powder coating screening device comprises a screening box, a shaking screening plate, a cleaning piece, a material guiding plate and a pre-storage barrel, and the cleaning piece comprises a driving rod, a brush, an air pump and an air blowing pipe; the shaking sieve plate is used for sieving the powder coating, and the pre-storage barrel is used for pre-storing the sieved powder coating, so that the situation that the device is stopped to replace the vessel after the vessel is fully collected is avoided, the device does not need to be restarted, the production time is saved, and the production efficiency of the powder coating is improved; according to the system, after the powder coating is sieved, semi-automatic cleaning can be conducted on the shaking sieve plate, a user does not need to detach the discharged material, operation is easy and convenient, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of screening devices, and in particular to a powder coating screening device and method. Background Art

[0002] Powder coating is a very common form of coating. It is made of special resin, pigment, filler, curing agent and other additives, mixed in a certain proportion, and then prepared by hot extrusion, crushing and screening. It consists of solid particles and fluid binder. During the construction process, powder coating needs to be sprayed and baked by specific equipment to form a uniform and stable coating to achieve the purpose of decoration and corrosion protection. In the preparation process of powder coating, the control of particle size is a very important link, and screening is one of the commonly used methods.

[0003] At present, the prior art (CN210614339U) discloses a powder coating screening device, including a screening box, a screening plate and a crank rocker screening mechanism. A feed inlet is arranged at the top of the screening box, a discharge port is arranged at the bottom of the screening box, the screening plate is arranged directly below the feed inlet, and crank rocker screening mechanisms for driving the screening plate to swing are symmetrically arranged on both sides of the screening plate. The screening plate is movably arranged in the screening box through a rotating shaft in the middle thereof, a feed funnel is arranged at the feed inlet, and a sealing cover plate is hingedly arranged at the discharge port. By arranging the crank rocker screening mechanisms on both sides of the screening plate, the swing of the screening plate is realized, thereby screening the block powder. The structure is simple, the cost is low, and it is manually operated. The screening process can be controlled at any time, effectively improving the screening efficiency.

[0004] However, in actual use of the above-mentioned powder coating screening device, it was found that the powder coating that failed to pass the screening would remain on the filter screen. As time goes by, it will accumulate more and more, and eventually affect the screening of the powder coating. Manpower is required to remove it and discharge the material, which is troublesome and time-consuming. Summary of the invention

[0005] The object of the present invention is to provide a powder coating screening device and method, aiming to solve the problem that the existing powder coating screening device needs to be manually disassembled and discharged, and the operation is troublesome and time-consuming.

[0006] To achieve the above-mentioned objectives, in a first aspect, the present invention provides a powder coating screening device, comprising a screening box, a shaking screen plate, a cleaning piece, a material guide plate and a pre-storage cylinder, the shaking screen plate being arranged in the screening box, the cleaning piece being arranged on both sides of the shaking screen plate, the material guide plate being fixedly connected to the screening box and being located below the shaking screen plate, the pre-storage cylinder being arranged at the bottom of the screening box, the cleaning piece comprising a driving rod, a brush, an air pump and an air blowing pipe; the driving rod being fixedly connected to the screening box and being located at the top of the shaking screen plate, the brush being detachably connected to the driving rod and being located at one side of the driving rod, the air pump being fixedly connected to the screening box and being located outside the screening box, the air blowing pipe being communicated with the air pump, and being fixedly connected to the screening box and being located below the shaking screen plate.

[0007] Wherein, the driving rod includes a telescopic rod and a cross bar, the telescopic rod is fixedly connected to the screening box and is located in the screening box, and the cross bar is fixedly connected to the telescopic rod and is located on one side of the telescopic rod.

[0008] Wherein, the cleaning piece also includes a dust cover, and the dust cover is arranged on the outside of the telescopic rod.

[0009] Among them, the air blowing pipe includes a fixed ring, an air duct and a nozzle. The air duct is connected to the air pump and fixedly connected to the screening box and is located below the shaking screen plate. The fixed ring is sleeved on the outside of the air duct and connected to the screening box and is located inside the screening box. The nozzle is connected to the air duct and is located outside the air duct.

[0010] Wherein, the shaking screen plate includes a screen plate body, a vibration motor and a transmission rod, the screen plate body is arranged in the screening box, the vibration motor is fixedly connected to the screening box and is located outside the screening box, the transmission rod is fixedly connected to the output end of the vibration motor and is fixedly connected to the screen plate body, and is located between the screen plate body and the vibration motor.

[0011] Among them, the pre-storage cylinder includes a material guide cylinder, a support frame and a sealing plate. The material guide cylinder is fixedly connected to the screening box and is located at the bottom of the screening box. The support frame is fixedly connected to the material guide cylinder and is located in the material guide cylinder. The sealing plate is slidably connected to the support frame and is located on one side of the support frame.

[0012] In a second aspect, the present invention further provides a powder coating screening method, which is applied to a powder coating screening device as described in the first aspect, and is characterized in that it comprises the following steps:

[0013] The user introduces the powder coating from the top of the screening box and starts the shaking screen plate to screen the powder coating. The powder coating that passes through the shaking screen plate is introduced into the pre-storage cylinder through the guide plate, and then introduced into the container through the pre-storage cylinder for collection;

[0014] When the container is almost full, close the pre-storage cylinder to pre-collect the sieved powder coating, then place a new container at the bottom of the pre-storage cylinder, open the pre-storage cylinder, and guide the pre-collected powder coating out for collection until the powder coating is completely sieved;

[0015] The user starts the driving rod, which drives the brush to brush away the powder accumulated on the shaking screen plate and discharge it through the discharge port on the side of the screen box. Then the air pump is started to make the air pipe blow air to the bottom of the shaking screen plate to blow out the powder in the mesh of the shaking screen plate, and the shaking screen plate is cleaned again with the brush.

[0016] The present invention provides a powder coating screening device, wherein the shaking sieve plate is used to screen powder coating, and the pre-storage cylinder is used to pre-store the screened powder coating, so as to avoid stopping the device to replace the container after the container is full, and there is no need to restart the device, thereby saving production time and improving the production efficiency of powder coating. Specifically, the user introduces the powder coating from the top of the screening box and starts the shaking sieve plate to screen the powder coating, and the powder coating that passes through the shaking sieve plate is introduced into the pre-storage cylinder through the guide plate, and then introduced into the container for collection through the pre-storage cylinder; when the container is almost full, the pre-storage cylinder is closed to pre-collect the screened powder coating, and then a new container is placed at the bottom of the pre-storage cylinder, and the pre-storage cylinder is opened. The storage cylinder is used to guide and collect the pre-collected powder coating until the powder coating is screened; at this time, the user starts the driving rod again, and the driving rod drives the brush to brush away the powder accumulated on the shaking screen plate, and discharge it through the discharge port on the side of the screening box, and then starts the air pump to make the air blow to the bottom of the shaking screen plate through the air pipe to blow out the powder in the mesh of the shaking screen plate, and clean the shaking screen plate again with the brush. The system can semi-automatically clean the shaking screen plate after the powder coating is screened, without the need for the user to disassemble the discharge, the operation is simple and convenient, time-saving and labor-saving, and solves the problem that the existing powder coating screening device requires manual disassembly of the discharge, which is cumbersome and time-consuming to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a powder coating screening device provided by the present invention.

[0019] Figure 2 The present invention is a bottom view of a powder coating screening device provided by the present invention.

[0020] Figure 3 The figure is a top view of a powder coating screening device provided by the present invention.

[0021] Figure 4 yes Figure 3 Section view along plane AA.

[0022] Figure 5 The invention discloses a cross-sectional view of a telescopic rod and a dust cover of a powder coating screening device provided by the invention.

[0023] Figure 6 The present invention provides a flow chart of a powder coating screening method.

[0024] In the figure: 1-screening box, 2-shaking screen plate, 3-cleaning part, 4-guide plate, 5-pre-storage cylinder, 6-driving rod, 7-brush, 8-air pump, 9-air blowing pipe, 10-telescopic rod, 11-cross bar, 12-dust cover, 13-fixing ring, 14-air guide pipe, 15-sprinkler, 16-screen plate body, 17-vibration motor, 18-transmission rod, 19-guide cylinder, 20-support frame, 21-sealing plate, 22-cylinder, 23-connecting rod, 24-baffle, 25-operating rod, 26-block. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] See also Figures 1 to 5 In the first aspect, the present invention provides a powder coating screening device, comprising a screening box 1, a shaking screen plate 2, a cleaning member 3, a material guide plate 4 and a pre-storage cylinder 5, wherein the shaking screen plate 2 is arranged in the screening box 1, the cleaning member 3 is arranged on both sides of the shaking screen plate 2, the material guide plate 4 is fixedly connected to the screening box 1 and is located below the shaking screen plate 2, the pre-storage cylinder 5 is arranged at the bottom of the screening box 1, and the cleaning member 3 comprises a driving rod 6, a brush 7, an air pump 8 and an air blowing pipe 9;

[0027] The driving rod 6 is fixedly connected to the screening box 1 and is located on the top of the shaking screen plate 2. The brush 7 is detachably connected to the driving rod 6 and is located on one side of the driving rod 6. The air pump 8 is fixedly connected to the screening box 1 and is located on the outside of the screening box 1. The air pipe 9 is communicated with the air pump 8 and is fixedly connected to the screening box 1 and is located below the shaking screen plate 2.

[0028] In the embodiment of the present invention, the shaking sieve plate 2 is used to sieve powder coating, and the pre-storage cylinder 5 is used to pre-store the sieved powder coating, so as to avoid stopping the device to replace the container after the container is full, and there is no need to restart the device, which saves production time and improves the production efficiency of powder coating. Specifically, the user introduces the powder coating from the top of the screening box 1, and starts the shaking sieve plate 2 to sieve the powder coating. The powder coating that passes through the shaking sieve plate 2 is introduced into the pre-storage cylinder 5 through the guide plate 4, and then introduced into the container for collection through the pre-storage cylinder 5. When the container is almost full, the pre-storage cylinder 5 is closed to pre-collect the sieved powder coating, and then a new container is placed at the bottom of the pre-storage cylinder 5, and the pre-storage cylinder 5 is opened. The pre-collected powder coating is exported and collected until the powder coating is screened; at this time, the user starts the driving rod 6 again, and the driving rod 6 drives the brush 7 to brush away the powder accumulated on the shaking screen plate 2, and discharge it through the discharge port on the side of the screening box 1, and then starts the air pump 8 to make the air blowing pipe 9 blow air to the bottom of the shaking screen plate 2 to blow out the powder in the mesh of the shaking screen plate 2, and clean the shaking screen plate 2 again with the brush 7. The system can semi-automatically clean the shaking screen plate 2 after the powder coating is screened, without the need for the user to disassemble the discharge, the operation is simple and convenient, time-saving and labor-saving, and solves the problem that the existing powder coating screening device requires manual disassembly of the discharge, which is cumbersome and time-consuming to operate.

[0029] Furthermore, the driving rod 6 includes a telescopic rod 10 and a cross bar 11, the telescopic rod 10 is fixedly connected to the screening box 1 and is located inside the screening box 1, and the cross bar 11 is fixedly connected to the telescopic rod 10 and is located on one side of the telescopic rod 10; the cleaning part 3 also includes a dust cover 12, and the dust cover 12 is sleeved on the outside of the telescopic rod 10; the air blowing pipe 9 includes a fixing ring 13, an air guide pipe 14 and a nozzle 15, the air guide pipe 14 is connected to the air pump 8, and is fixedly connected to the screening box 1, and is located below the shaking screen plate 2, the fixing ring 13 is sleeved on the outside of the air guide pipe 14, and is connected to the screening box 1 and is located inside the screening box 1, the nozzle 15 is connected to the air guide pipe 14, and is located outside the air guide pipe 14.

[0030] In the embodiment of the present invention, the telescopic rod 10 is an electric telescopic rod commonly used on the market, which is used to drive the cross bar 11 to move above the shaking screen plate 2. The movement of the cross bar 11 drives the brush 7 to move, so that the brush 7 can clean the powder coating accumulated on the shaking screen plate 2. The dust cover 12 can be extended and retracted along with the telescopic rod 10, which is a common technology on the market, and is used to protect the telescopic rod 10 from being affected by dust and improve the service life of the telescopic rod 10. The fixing ring 13 is used to fix the air duct 14 in the screening box 1 to avoid the air duct 14 from swinging when the air pump 8 supplies air to the air duct 14. The nozzle 15 is a high-pressure nozzle, which is used to pressurize and spray the air in the air duct 14, thereby blowing out the powder in the mesh of the shaking screen plate 2 to avoid clogging of the mesh of the shaking screen plate 2 and affecting the subsequent screening effect.

[0031] Furthermore, the shaking screen plate 2 includes a screen plate body 16, a vibration motor 17 and a transmission rod 18, the screen plate body 16 is arranged in the screening box 1, the vibration motor 17 is fixedly connected to the screening box 1 and is located outside the screening box 1, and the transmission rod 18 is fixedly connected to the output end of the vibration motor 17 and is fixedly connected to the screen plate body 16, and is located between the screen plate body 16 and the vibration motor 17.

[0032] In the embodiment of the present invention, the vibration motor 17 is powered on to generate a vibration source, and the transmission rod 18 transmits the vibration to the sieve plate body 16, so that the sieve plate body 16 vibrates to pass through the sieve.

[0033] Furthermore, the pre-storage cylinder 5 includes a material guide cylinder 19, a support frame 20 and a sealing plate 21. The material guide cylinder 19 is fixedly connected to the screening box 1 and is located at the bottom of the screening box 1. The support frame 20 is fixedly connected to the material guide cylinder 19 and is located in the material guide cylinder 19. The sealing plate 21 is slidably connected to the support frame 20 and is located on one side of the support frame 20.

[0034] In an embodiment of the present invention, the material guide barrel 19 is used to discharge the powder coating introduced by the material guide plate 4. The support frame 20 is fixed to the bottom of the material guide barrel 19 to provide support conditions for the sealing plate 21. The sealing plate 21 can slide on the support frame 20, thereby controlling the opening and closing of the material guide barrel 19 and controlling the discharge of the material guide barrel 19.

[0035] Furthermore, the material guide cylinder 19 includes a cylinder body 22 and a connecting rod 23 , wherein the connecting rod 23 is fixedly connected to the screening box 1 and is located at the bottom of the screening box 1 , and the connecting rod 23 is fixedly connected to the cylinder body 22 and is located on one side of the connecting rod 23 .

[0036] In the embodiment of the present invention, the connecting rod 23 is fixed to the bottom of the screening box 1 by bolts, and the cylinder 22 is used to guide the powder coating introduced by the guide plate 4 out.

[0037] Furthermore, the sealing plate 21 includes a baffle 24, an operating rod 25 and a block 26, the baffle 24 is slidably connected to the support frame 20 and is located on one side of the support frame 20, the operating rod 25 is fixedly connected to the baffle 24 and is located on one side of the baffle 24, and the block 26 is fixedly connected to the support frame 20 and is located on the side of the baffle 24 away from the operating rod 25.

[0038] In an embodiment of the present invention, the baffle 24 can slide on the support frame 20, so as to control the opening and closing of the cylinder 22 and control the discharge of the cylinder 22. The setting of the operating rod 25 makes it convenient for the user to pull or push the baffle 24, thereby improving practicality. The clamping block 26 is used to clamp the baffle 24 when closing the cylinder 22.

[0039] See also Figure 6 In a second aspect, the present invention further provides a powder coating screening method, which is applied to a powder coating screening device as described in the first aspect, and is characterized in that it comprises the following steps:

[0040] S1 The user introduces the powder coating from the top of the screening box 1 and starts the shaking screen plate 2 to screen the powder coating. The powder coating passing through the shaking screen plate 2 is introduced into the pre-storage cylinder 5 through the guide plate 4, and then introduced into the container through the pre-storage cylinder 5 for collection;

[0041] When the S2 container is almost full, close the pre-storage tube 5 to pre-collect the sieved powder coating, then place a new container at the bottom of the pre-storage tube 5, open the pre-storage tube 5, and guide the pre-collected powder coating out for collection until the powder coating is completely sieved;

[0042] In the embodiment of the present invention, when the container is almost full, the baffle 24 is pushed close to the block 26 until the block 26 engages with the baffle 24. At this time, the baffle 24 closes the cylinder 22, and the powder coating guided out by the guide plate 4 enters the cylinder 22 for pre-collection. After replacing the container, the user pulls the baffle 24 to reset through the operating rod 25, so that the baffle 24 is separated from the block 26, exposing the through hole at the bottom of the cylinder 22. At this time, the cylinder 22 is opened to guide and collect the pre-collected powder coating until the powder coating is screened.

[0043] S3 The user starts the driving rod 6, and the driving rod 6 drives the brush 7 to brush away the powder accumulated on the shaking screen plate 2, and discharge it through the discharge port on the side of the screen box 1, and then starts the air pump 8 to make the air blowing pipe 9 blow air to the bottom of the shaking screen plate 2 to blow out the powder in the mesh of the shaking screen plate 2, and clean the shaking screen plate 2 again with the brush 7.

[0044] In the embodiment of the present invention, the telescopic rod 10 drives the cross bar 11 to move above the shaking screen plate 2, and the movement of the cross bar 11 drives the brush 7 to move, so that the brush 7 can clean the powder coating accumulated on the shaking screen plate 2, and the accumulated powder coating is discharged through the discharge port on the side of the screen box 1, and the air pump 8 is started to supply air to the air guide pipe 14 and the nozzle 15, so that the nozzle 15 blows air to the bottom of the shaking screen plate 2 to blow out the powder in the mesh of the shaking screen plate 2, so as to avoid the mesh of the shaking screen plate 2 being blocked and affecting the subsequent screening effect, and the telescopic rod 10 is started again to clean the blown powder with the brush 7.

[0045] The above disclosure is only a preferred embodiment of a powder coating screening device and method of the present invention. Of course, this cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A powder coating screening device, characterized in that: It includes a screening box, a shaking screen plate, a cleaning piece, a material guide plate and a pre-storage cylinder, wherein the shaking screen plate is arranged in the screening box, the cleaning piece is arranged on both sides of the shaking screen plate, the material guide plate is fixedly connected to the screening box and is located below the shaking screen plate, the pre-storage cylinder is arranged at the bottom of the screening box, and the cleaning piece includes a driving rod, a brush, an air pump and an air blowing pipe; The driving rod is fixedly connected to the screening box and is located on the top of the shaking screen plate. The brush is detachably connected to the driving rod and is located on one side of the driving rod. The air pump is fixedly connected to the screening box and is located outside the screening box. The air pipe is communicated with the air pump and is fixedly connected to the screening box and is located below the shaking screen plate.

2. A powder coating screening device as claimed in claim 1, characterized in that: The driving rod comprises a telescopic rod and a cross bar, the telescopic rod is fixedly connected to the screening box and is located in the screening box, and the cross bar is fixedly connected to the telescopic rod and is located on one side of the telescopic rod.

3. A powder coating screening device as claimed in claim 2, characterized in that: The cleaning piece also includes a dust cover, and the dust cover is sleeved on the outside of the telescopic rod.

4. A powder coating screening device as claimed in claim 1, characterized in that: The air blowing pipe includes a fixed ring, an air duct and a nozzle. The air duct is communicated with the air pump and fixedly connected to the screening box and is located below the shaking screen plate. The fixed ring is sleeved on the outside of the air duct and is connected to the screening box and is located inside the screening box. The nozzle is communicated with the air duct and is located outside the air duct.

5. A powder coating screening device as claimed in claim 1, characterized in that: The shaking screen plate includes a screen plate body, a vibration motor and a transmission rod, the screen plate body is arranged in the screening box, the vibration motor is fixedly connected to the screening box and is located outside the screening box, the transmission rod is fixedly connected to the output end of the vibration motor and is fixedly connected to the screen plate body, and is located between the screen plate body and the vibration motor.

6. A powder coating screening device as claimed in claim 1, characterized in that: The pre-storage cylinder includes a material guide cylinder, a support frame and a sealing plate. The material guide cylinder is fixedly connected to the screening box and is located at the bottom of the screening box. The support frame is fixedly connected to the material guide cylinder and is located in the material guide cylinder. The sealing plate is slidably connected to the support frame and is located on one side of the support frame.

7. A powder coating screening method, applied to a powder coating screening device as claimed in claim 1, characterized in that: The following steps are involved: The user introduces the powder coating from the top of the screening box and starts the shaking screen plate to screen the powder coating. The powder coating that passes through the shaking screen plate is introduced into the pre-storage cylinder through the guide plate, and then introduced into the container through the pre-storage cylinder for collection; When the container is almost full, close the pre-storage cylinder to pre-collect the sieved powder coating, then place a new container at the bottom of the pre-storage cylinder, open the pre-storage cylinder, and guide the pre-collected powder coating out for collection until the powder coating is completely sieved; The user starts the driving rod, which drives the brush to brush away the powder accumulated on the shaking screen plate and discharge it through the discharge port on the side of the screen box. Then the air pump is started to make the air pipe blow air to the bottom of the shaking screen plate to blow out the powder in the mesh of the shaking screen plate, and the shaking screen plate is cleaned again with the brush.

Images