Molding powder dust recovery device

Abstract

The utility model relates to a molding powder dust recovery device. The device comprises an air inlet frame, an air exhaust frame and two filter pipes, an air inlet pipe and an air distribution pipe are arranged on the air inlet frame, two partition plates are arranged in the air distribution pipe, air holes are formed in the two partition plates, a control rod is arranged between the two air holes in a penetrating mode, one end of the control rod is connected with an air cylinder, two blocking blocks are fixed to the control rod, and a first connecting end and a second connecting end are arranged on the air distribution pipe; a first exhaust pipe, a second exhaust pipe and an air extractor are arranged on the exhaust frame; one ends of the two filter pipes are detachably connected with any connecting end, the other ends of the two filter pipes are detachably connected with any exhaust pipe, and filter cloth bags are arranged in the filter pipes. The two filter pipes are arranged at the same time, only one of the two filter pipes is in a filtering state, the working states of the two filter pipes can be switched by switching the position of the control rod, and the filter pipes in a non-working state can be unloaded to replace the filter cloth bags in the filter pipes, so that the device has the effect of replacing the filter cloth bags on line.

Description

Technical Field

[0001] This utility model relates to a dust collection device, and more particularly to a plastic powder dust recovery device. Background Technology

[0002] Powder coating is a material used in powder coating processes. It is also known as thermosetting powder coating for electrostatic spraying. It is mainly used for surface treatment of metal products and some wood products. Through electrostatic spraying technology, powder coating is evenly adhered to the surface of the material to form a strong, beautiful and corrosion-resistant protective layer.

[0003] In the production of plastic powder, some processes easily generate dust. This floating plastic powder not only affects the air quality in the work area but also causes a large amount of powder to escape, resulting in resource waste. For example, a plastic grinding mill is a device used to grind various plastic materials into powder, and this equipment generates a large amount of plastic powder dust during operation. Therefore, to reduce plastic powder dust, these dust-generating devices are generally equipped with dust collection devices to absorb and recover the dust. The most common structure used in existing industrial dust collection devices for filtration is the bag filter, which can not only efficiently filter air but also collect solid particles in the bags. With the use of the dust collection device, solid particles accumulate in the bags, gradually affecting the filtration efficiency of the bags, thus requiring periodic shutdown for bag replacement. During shutdown, the dust collection device cannot continue collecting dust, so the production equipment must also be shut down. Therefore, if an online bag replacement dust collection device could be developed, it would significantly increase the operating time of the production equipment, which would have a positive impact on improving plastic powder production capacity. Summary of the Invention

[0004] This invention provides a plastic powder dust recovery device; it solves the problem in the prior art where the production equipment needs to be shut down during the replacement of filter bags, which affects production capacity.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a plastic powder dust recovery device, characterized in that: it includes an air inlet frame, an exhaust frame, and two filter pipes. The air inlet frame is provided with an air inlet pipe and a distribution pipe communicating with the air inlet pipe. The distribution pipe is provided with two partition plates, dividing the inner cavity of the distribution pipe into an air inlet chamber in the middle, a left chamber, and a right chamber. Each of the two partition plates is provided with air holes. A control rod passes through the two air holes. One end of the control rod passes through the distribution pipe and is connected to a cylinder. The device requires proper sealing. Two blocking blocks are fixed on the control rod. The cylinder drives the control rod to move to either side, which can cause one of the blocking blocks to form a seal with an air hole. The air distribution pipe has a first connecting end that communicates with the left cavity and a second connecting end that communicates with the right cavity. The exhaust frame has a first exhaust pipe, a second exhaust pipe, and an air pump connected to the two exhaust pipes. One end of each of the two filter pipes is detachably connected to either connecting end, and the other end is detachably connected to either exhaust pipe. A filter bag is installed inside the filter pipe.

[0006] In this invention, the control lever is positioned by a cylinder, but other moving control components, such as an electric cylinder, can also be used. When the control lever moves to either side, only one block will seal with the corresponding air hole, while the other air hole remains open. Therefore, the air distribution pipe can guide the mixed gas entering from the intake pipe to the left or right chamber, then flow to the corresponding connection end, filter pipe, and exhaust pipe, finally exiting from the exhaust end of the vacuum pump. Only one filter pipe is filtering at a time. By switching the position of the control lever, the working state of the two filter pipes can be switched. The filter pipe in the non-working state can be unloaded to replace its internal filter bag.

[0007] Furthermore, both connecting ends are provided with front overlapping seats at their outer ends. Each front overlapping seat includes a front abutment plate, a bottom plate, and two side plates. The front abutment plate has ventilation holes. The front ends of both exhaust pipes are provided with rear overlapping seats. Each rear overlapping seat includes an extension pipe communicating with the exhaust pipe, a limiting plate fixedly sleeved on the extension pipe, a rear abutment plate movably sleeved on the extension pipe, and a spring between the rear abutment plate and the limiting plate. The air inlet end of the filter bag is located at the front end of the filter pipe. The front end of the filter pipe abuts against the front overlapping seat, and the rear end of the filter pipe abuts against the rear overlapping seat. During installation, first insert the rear end of the filter tube at an angle towards the extension tube. Then, the rear abutment plate will be pushed backward, compressing the spring. Next, place the front end of the filter tube into the front overlap seat, so that the front end of the filter tube abuts against the front abutment plate. The bottom plate and side plates wrap around the outside of the front end of the filter tube, providing a limiting and fixing effect. Under the push of the spring, the front and rear overlap seats will tightly abut against both ends of the filter tube, achieving a fixing effect. For disassembly, push the filter tube backward, causing the rear abutment plate to push backward. Then, lift the front end of the filter tube away from the front overlap seat, and then pull the filter tube out of the extension tube. The installation and disassembly process of this utility model is relatively quick.

[0008] Therefore, this utility model has the following characteristics compared with the prior art: 1. This utility model is provided with two filter tubes, but only one filter tube is in the filtering state at the same time. By switching the position of the control lever, the working state of the two filter tubes can be switched. The filter tube in the non-working state can be unloaded to replace its internal filter bag, so that this utility model has the effect of online filter bag replacement; 2. The installation and disassembly process of this utility model is relatively quick. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Appendix Figure 2 This is a schematic diagram of the internal structure of the gas distribution pipe;

[0011] Appendix Figure 3 It is attached Figure 1 Enlarged view of part A;

[0012] Appendix Figure 4 It is attached Figure 1 Enlarged view of part B. Detailed Implementation

[0013] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] Example 1: See Figure 1 , Figure 2 A plastic powder dust recovery device includes an air intake frame 10, an exhaust frame 20, and two filter pipes 30. The air intake frame is equipped with an air intake pipe 40 and a distribution pipe 50 connected to the air intake pipe. The air intake pipe is connected to a dust collection hood or dust collection device on existing equipment to absorb air filled with dust. The distribution pipe is equipped with two partition plates 51, which divide the inner cavity of the distribution pipe into an air intake chamber 52 in the middle, a left side chamber 53, and a right side chamber 54. Both partition plates are equipped with air holes 55, and a control rod 56 passes through the two air holes. One end of the control rod passes through the distribution pipe and is connected to a cylinder 57. The passage position needs to be properly sealed. The control lever has two blocking blocks 58 fixed on it. When the cylinder moves the control lever to either side, one of the blocking blocks can form a seal with an air hole. The blocking block is shaped like a frustum, and the shape of the air hole matches the shape of the blocking block. The air distribution pipe has a first connecting end 531 that communicates with the left cavity and a second connecting end 541 that communicates with the right cavity. The exhaust frame has a first exhaust pipe 61, a second exhaust pipe 62, and an air pump 70 that is connected to the two exhaust pipes. One end of the two filter pipes can be detachably connected to any connecting end, and the other end can be detachably connected to any exhaust pipe. The filter pipes are equipped with filter bags 31.

[0016] In this embodiment, the control lever is positioned by a cylinder, but other moving control components, such as an electric cylinder, can also be used. When the control lever moves to either side, only one block will seal with the corresponding air hole, while the other air hole remains open. Therefore, the air distribution pipe can guide the mixed gas entering from the intake pipe to the left or right chamber, and then flow to the corresponding connection end, filter pipe, and exhaust pipe, finally being discharged from the exhaust end of the vacuum pump. Only one of the two filter pipes is filtering at any given time. By switching the position of the control lever, the working state of the two filter pipes can be switched. The filter pipe in the non-working state can be unloaded to replace its internal filter bag.

[0017] See Figure 3 and Figure 4Both connecting ends are provided with front overlapping seats 80, which include a front abutment plate 81, a bottom plate 82, and two side plates 83. The front abutment plate is provided with a vent hole 84. The front ends of the two exhaust pipes are provided with rear overlapping seats 90, which include an extension pipe 91 connected to the exhaust pipe, a limiting plate 92 fixedly sleeved on the extension pipe, a rear abutment plate 93 movably sleeved on the extension pipe, and a spring 94 between the rear abutment plate and the limiting plate. The air inlet end of the filter bag is located at the front end of the filter pipe, the front end of the filter pipe abuts against the front overlapping seat, and the rear end of the filter pipe abuts against the rear overlapping seat. During installation, first insert the rear end of the filter tube diagonally into the extension tube, then push the rear abutment plate backward, compressing the spring. Next, place the front end of the filter tube into the front overlap seat, so that the front end of the filter tube abuts against the front abutment plate. The bottom plate and side plates wrap around the outside of the front end of the filter tube, providing a limiting and fixing effect. Under the push of the spring, the front and rear overlap seats will tightly abut against both ends of the filter tube, achieving a fixing effect. For disassembly, push the filter tube backward, causing the rear abutment plate to push backward, then lift the front end of the filter tube away from the front overlap seat, and then pull the filter tube out of the extension tube. The installation and disassembly process in this embodiment is relatively quick.

[0018] See Figure 3 and Figure 4 The filter tube is equipped with flanges 32 at both the front and rear ends, and a rubber ring 33 is provided at the opening of the filter bag. The rubber ring covers the outside of the front flange. A rubber layer 95 is provided on the rear abutment plate. Both the rubber ring and the rubber layer have a sealing effect, increasing the overall airtightness.

[0019] This invention can be modified in many ways, as will be apparent to those skilled in the art, and such modifications are not considered to depart from the scope of this invention. All such modifications that are obvious to those skilled in the art are included within the scope of these claims.

Claims

1. A plastic powder dust recovery device, characterized in that: The device includes an intake frame, an exhaust frame, and two filter pipes. The intake frame has an intake pipe and a distribution pipe connected to the intake pipe. The distribution pipe has two partitions that divide its inner cavity into an intake chamber in the middle, a left chamber, and a right chamber. Each partition has an air hole, and a control rod passes between the two air holes. One end of the control rod passes through the distribution pipe and is connected to a cylinder. Two blocking blocks are fixed on the control rod. The cylinder moves the control rod to either side, which can cause one of the blocking blocks to seal with one of the air holes. The distribution pipe has a first connection end connected to the left chamber and a second connection end connected to the right chamber. The exhaust frame has a first exhaust pipe, a second exhaust pipe, and a vacuum pump connected to the two exhaust pipes. One end of each filter pipe is detachably connected to either connection end, and the other end is detachably connected to either exhaust pipe. Filter bags are installed inside the filter pipes.

2. The plastic powder dust recovery device according to claim 1, characterized in that: Both connecting ends are provided with a front overlapping seat at their outer ends. The front overlapping seat includes a front abutment plate, a bottom plate, and two side plates. The front abutment plate is provided with a vent hole. The front ends of the two exhaust pipes are provided with a rear overlapping seat. The rear overlapping seat includes an extension pipe communicating with the exhaust pipe, a limiting plate fixedly sleeved on the extension pipe, a rear abutment plate movably sleeved on the extension pipe, and a spring between the rear abutment plate and the limiting plate.

3. The plastic powder dust recovery device according to claim 2, characterized in that: The filter tube has flanges at both ends, and a rubber ring is provided at the opening of the filter bag. The rubber ring covers the outside of the front flange. A rubber layer is provided on the rear abutment plate.

4. The plastic powder dust recovery device according to claim 1, characterized in that: The block is shaped like a frustum, and the shape of the vent matches the shape of the block.

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