Quick-release dust collection return device

Abstract

The utility model relates to a quick detach type dust collecting and returning device for dust collection in industry, comprising: a body, a filter core and a back flushing assembly, the body is internally provided with an upper cavity, a middle cavity and a lower cavity, an exhaust port is arranged on the wall of the upper cavity; the filter core is detachably installed in the middle cavity; the back flushing assembly comprises a gas pocket and a back flushing pipe, the gas pocket is arranged outside the body, one end of the back flushing pipe is connected with the gas pocket, the other end of the back flushing pipe penetrates through the side wall of the upper cavity and part of the back flushing pipe extends into the filter core for blowing air to the filter core; a dust inlet and a returning port are arranged on the wall of the lower cavity, the dust inlet and the returning port are the same opening or different openings; the upper cavity and the middle cavity, and the middle cavity and the lower cavity are detachably connected. The utility model relates to a quick detach type dust collecting and returning device, which is simple in structure and high in efficiency, and through the quick detach structure between the modules, the convenience of equipment maintenance is remarkably improved, and the technical pain points of the complex and difficult disassembly of the traditional dust collecting device are completely solved.

Description

Technical Field

[0001] This utility model relates to the field of dust treatment, and more specifically, to a quick-release dust collection and return device. Background Technology

[0002] In industrial production environments, the process of crushing solid materials by overcoming their cohesion under external force is called pulverization. During this process, a large amount of dust is generated, which pollutes the workshop working environment and affects the physical and mental health of the workers. In order to overcome the above problems, a dust collection and return device is usually used during pulverization to collect the dust and back-blowing it in a regular manner, so that the crushed material is returned to the silo.

[0003] In existing technologies, the filter element, backflush pipe, and cavity structure of dust collection and return devices are complex in design and are usually integrally molded or bolted. This design makes the disassembly process cumbersome and inefficient when replacing the filter element (to adapt to different dust characteristics) or performing maintenance and cleaning, which seriously affects the maintainability and ease of operation of the equipment. In addition, existing dust collection and return devices are prone to problems such as bottom blockage by dust and valve jamming, and the large size of the dust collection and return device body made of stainless steel and other materials makes it difficult to transport and clean. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A quick-release dust collection and return device, comprising:

[0006] Body, filter element, and backflush assembly;

[0007] The main body has a hollow structure and is provided with three cavities: an upper cavity, a middle cavity, and a lower cavity;

[0008] The upper cavity wall is provided with an exhaust port;

[0009] The filter element is detachably installed in the central cavity;

[0010] The backflush assembly includes an air bag and a backflush pipe. The air bag is located outside the main body. One end of the backflush pipe is connected to the air bag, and the other end passes through the side wall of the upper cavity and a portion of the backflush pipe extends into the filter element for blowing air into the filter element.

[0011] The lower cavity wall is provided with a dust inlet and a return outlet, wherein the dust inlet and the return outlet are the same opening or different openings;

[0012] The upper cavity and the middle cavity are detachably connected, and the middle cavity and the lower cavity are detachably connected.

[0013] In some embodiments, the dust inlet and the return outlet are the same opening and are located at the bottom of the lower cavity.

[0014] In some embodiments, the lower cavity is wedge-shaped, and a butterfly valve is connected to the dust inlet of the lower cavity.

[0015] In some embodiments, the upper cavity and the middle cavity are connected by a V-shaped clamp, and the middle cavity and the lower cavity are connected by a V-shaped clamp.

[0016] In some embodiments, an annular filter element support platform is detachably mounted on the top of the central cavity, and an annular flange is provided on the outer periphery of the top of the filter element. When the filter element is installed in the central cavity, the annular flange of the filter element is supported on the annular filter element support platform.

[0017] In some embodiments, multiple longitudinally extending lead screws are fixedly installed on the annular filter element support platform, and the multiple lead screws are simultaneously located on the outer periphery of the annular flange of the filter element; the quick-release dust collection and return device also includes multiple strip-shaped pressure blocks, multiple nuts and multiple spring blocks, the strip-shaped pressure blocks are transversely placed across the upper surface of the filter element, and each end of the pressure block is respectively threaded through a lead screw, and the two ends of the pressure block are locked on the lead screw by nuts and spring washers.

[0018] In some embodiments, the exhaust port is connected to an exhaust pipe, which is connected to an air extraction device.

[0019] In some embodiments, the cavity is made of PP material.

[0020] As can be seen from the above technical solution, compared with the prior art, the embodiments of this utility model have at least the following advantages and positive effects:

[0021] 1. Simplified Dust Collection and Recirculation Device Design: The main body comprises three independent chambers: an upper chamber, a middle chamber, and a lower chamber. These three chambers are sequentially and sealed together vertically from top to bottom to form a continuous, enclosed space. Each chamber has a clearly defined function: the upper chamber has a built-in backflush pipe for filter cleaning; the middle chamber houses a removable filter for efficient dust retention; and the lower chamber has a dust inlet (connecting to the dust collection bin) and a recirculation inlet (connecting to the production material bin or dust collection bin). The upper chamber is equipped with an exhaust port connected to an external air extraction device to maintain negative pressure in the system. This design enables efficient dust collection and recirculation.

[0022] 2. Modular quick-release structure design: The detachable three-chamber connection structure and the detachable installation of the filter element in the middle chamber can significantly improve the cleaning and maintenance convenience of the filter element structure and the backflush pipe structure of the upper chamber, and completely solve the technical pain point of difficult disassembly and assembly of traditional dust collection devices.

[0023] 3. Wedge-shaped lower cavity anti-clogging design: The innovative use of a wedge-shaped lower cavity structure effectively prevents dust accumulation by optimizing the material flow path, fundamentally solving common industry problems such as valve jamming.

[0024] 4. Application of lightweight materials: The filter body is made of high-strength lightweight composite material, which significantly reduces the weight of the equipment while ensuring structural strength, greatly reducing the difficulty of handling and installation.

[0025] 5. Applicability to multiple scenarios: This utility model is specifically designed for applications involving the collection of powder materials, with structural optimization that allows for perfect adaptation to various industrial production scenarios, such as fine processing of metal powders, raw material crushing in the pharmaceutical industry, and powder processing in the building materials field. Attached Figure Description

[0026] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0027] Figure 1 This is a perspective view of the quick-release dust collection and return device in the embodiment.

[0028] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0029] Figure 3 This is a perspective view of the pressure block in the embodiment.

[0030] The annotations in the attached figures are explained as follows:

[0031] 1. Body; 11. Upper cavity; 111. Exhaust port; 12. Middle cavity; 121. Groove; 13. Lower cavity; 131. Dust inlet; 2. Filter element; 21. Annular flange; 3. Air bag; 4. Backflush pipe; 5. Annular filter element support platform; 51. Lead screw; 6. Strip-shaped pressure block; 7. V-shaped clamp. Detailed Implementation

[0032] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0033] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0034] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0035] See Figure 1-3 The illustration shows a quick-release dust collection and return device of this utility model. This device is used to connect to a powder collection bin. When powder is poured into the powder collection bin, the quick-release dust collection and return device collects the dust generated in the collection bin and returns it to the powder collection bin to prevent the dust from being dispersed into the air.

[0036] Specifically, the quick-release dust collection and return device includes a main body 1, a filter element 2, and a backflushing assembly.

[0037] The main body 1 has a hollow interior and is provided with three cavities: an upper cavity 11, a middle cavity 12, and a lower cavity 13.

[0038] The upper cavity 11 is provided with an exhaust port 111 on its wall.

[0039] The filter element 2 is detachably installed in the central cavity 12.

[0040] The backflush assembly includes an air bag 3 and a backflush pipe 4. The air bag 3 is located outside the main body 1. One end of the backflush pipe 4 is connected to the air bag 3 through a pulse valve, and the other end passes through the side wall of the upper cavity 11 and partially extends into the filter element 2. Multiple air outlets are provided on the bottom and the side wall near the bottom of the backflush pipe 4.

[0041] The lower cavity 13 is provided with a dust inlet 131 and a return outlet. The dust inlet 131 and the return outlet may be the same opening or different openings.

[0042] The upper cavity 11 and the middle cavity 12 are detachably connected, and the middle cavity 12 and the lower cavity 13 are detachably connected.

[0043] The filter element 2 is used to effectively adsorb and collect dust. The backflush pipe 4 is used to periodically blow air onto the dust collected on the filter element 2 to blow off the powder collected on the filter element 2. The blown-off powder is returned to the powder collection chamber through the return port of the lower cavity 13.

[0044] This embodiment proposes a simplified dust collection and return device design. The main body 1 includes three cavities: an upper cavity 11, a middle cavity 12, and a lower cavity 13. These three cavities are sequentially and sealed from top to bottom in a longitudinal direction to form a continuous, enclosed space. Each cavity has a clearly defined function. The upper cavity 11 has a built-in backflush pipe 4 for cleaning the filter element 2. The middle cavity 12 is equipped with a removable filter element 2 for efficient dust interception. The lower cavity 13 is provided with a dust inlet 131 (connected to the dust collection bin) and a return port (connected to the production material bin or the dust collection bin). The upper cavity 11 is equipped with an exhaust port 111 connected to an external air extraction device to maintain negative pressure in the system. Thus, efficient dust collection and return can be achieved. By adopting a structural design that allows for detachable connection between the filter element 2 and the middle cavity 12, detachable connection between the upper cavity 11 and the middle cavity 12, and detachable connection between the middle cavity 12 and the lower cavity 13, the convenience of cleaning, replacing, and maintaining the filter element 2, the backflush pipe 4, and the interior of each cavity of the main body 1 can be significantly improved, completely solving the technical problem of difficult disassembly and assembly of traditional dust collection devices.

[0045] As a preferred embodiment, in order to further simplify the design of the structure, the dust inlet 131 and the return outlet are the same opening and are located at the bottom of the lower cavity 13.

[0046] In a preferred embodiment, the lower cavity 13 is wedge-shaped, and a butterfly valve is connected to the dust inlet 131 of the lower cavity 13. The lower cavity 13 and the butterfly valve are connected by bolts.

[0047] As a preferred embodiment, in order to match the wedge-shaped structure of the lower cavity 13, the cross-section of part of the middle cavity 12 is designed to gradually decrease from top to bottom.

[0048] Therefore, when the dust after backflushing slides down the inner wall of the middle cavity 12 and the wedge-shaped lower cavity 13, the dust falls on one side of the butterfly valve plate instead of being distributed on both sides of the valve plate's central axis; when the butterfly valve rotates, the dust will not get stuck in the gap of the butterfly valve's central axis, and most of it will fall back into the external dust collection chamber.

[0049] In a preferred embodiment, the upper cavity 11 and the middle cavity 12 are connected by a V-shaped clamp 7, and the middle cavity 12 and the lower cavity 13 are connected by a V-shaped clamp 7. When the workers disassemble and assemble the dust collection and return device of this utility model, they only need to disassemble and assemble two V-shaped clamps 7 to complete the replacement, cleaning, etc. of the dust collection and return device.

[0050] In order to achieve the connection of the V-shaped clamp 7, annular flanges 21 are provided on the bottom of the outer side wall of the upper cavity 11, the top and bottom of the outer side wall of the middle cavity 12, and the top of the outer side wall of the lower cavity 13.

[0051] In a preferred embodiment, the top of the central cavity 12 has an upward-facing groove 121, and an annular filter element support platform 5 is fixedly installed on the groove 121 by adhesive. An annular flange 21 is provided on the outer periphery of the top of the filter element 2. When the filter element 2 is installed in the central cavity 12, the annular flange 21 of the filter element 2 is supported on the annular filter element support platform 5.

[0052] In a preferred embodiment, multiple longitudinally extending lead screws 51 are fixedly installed on the annular filter element support platform 5, and the multiple lead screws 51 are evenly distributed on the outer periphery of the annular flange 21 of the filter element 2. The quick-release dust collection and return device of this utility model also includes multiple strip-shaped pressure blocks 6, multiple nuts and multiple spring blocks. Each strip-shaped pressure block 6 is transversely placed across the upper surface of the filter element 2, and each end of the pressure block 6 is respectively passed through a lead screw 51, and the two ends of the pressure block 6 are locked to the lead screw 51 by nuts and spring washers.

[0053] The number of strip-shaped pressure blocks 6 can be 2-4, such as 2, 3 or 4. In order to install the pressure blocks, the number of lead screws 51 can be an even number, such as 4, 6 or 8.

[0054] In a preferred embodiment, the exhaust port 111 is connected to an exhaust pipe, which is connected to a suction device, including but not limited to a vacuum pump.

[0055] In a preferred embodiment, the upper cavity 11 and lower cavity 13 are made of stainless steel, and the middle cavity 12 is made of PP. The upper cavity 11 and lower cavity 13 serve as the supporting frame of the dust collection and return device of this utility model. The stainless steel material has excellent rigidity and resistance to deformation, ensuring a stable connection between the dust collection and return device of this utility model and external equipment. The PP material of the middle cavity 12 can reduce the overall weight of the dust collection and return device of this utility model, making it more convenient for workers to move the dust collection and return device of this utility model.

[0056] The working principle of the quick-release dust collection and return device of this utility model is as follows: The quick-release dust collection and return device of this utility model is connected to an external powder collection bin. Specifically, it can be connected to an external powder collection bin through the butterfly valve of the dust inlet 131. The powder collection bin has a powder pouring inlet, a space for containing powder, and a dust outlet.

[0057] When powder is poured into the powder collection chamber through the powder inlet, a large amount of dust is generated inside the powder collection chamber. At this time, the butterfly valve connected to the dust inlet 131 is open, and the exhaust device is activated, connecting the exhaust pipe, the dust collection return device body 1, and the powder collection chamber to create a negative pressure condition. Under the negative pressure condition, the dust enters the dust collection return device body 1 through the dust inlet 131. The gas carrying dust is filtered by the filter element 2 and discharged through the exhaust pipe of the exhaust port 111.

[0058] After a certain amount of dust has been collected on filter element 2, the butterfly valve connected to dust inlet 131 closes, blocking the airflow and pausing dust collection. The pulse valve connected to air tank 3 releases, controlling the compressed air in air tank 3 to impact filter element 2 through backflush pipe 4, blowing off the dust adsorbed on the outer surface of filter element 2. The blown-off dust slides down along the middle cavity 12 and lower cavity 13 of the return feeder and concentrates on the upper surface of the butterfly valve. Because the amount of dust blown off during backflush is large and heavy, when the butterfly valve reopens, most of the dust slides down through the return feeder into the external powder collection chamber under the action of gravity, and a small amount of dust is raised and adsorbed by filter element 2 again. Different backflush frequencies can be set for different powder products. For example, after pouring powder into the collection chamber three times, the air extraction device can be paused, and filter element 2 can be backflushed once.

[0059] The powder collection bin mentioned in this utility model can be used in the powder processing stage of the prior art, such as for collecting powder materials generated from the fine processing of metal powder, raw material crushing in the pharmaceutical industry, and powder processing in the building materials field.

[0060] In summary, the embodiments of this utility model have at least the following advantages and positive effects: By adopting a simple modular quick-release structure design and a detachable connection structure for the filter element 2, the efficiency and ease of maintenance of the equipment are significantly improved, completely solving the technical pain point of difficult disassembly and assembly of traditional dust collection devices. Furthermore, it innovatively adopts a wedge-shaped lower cavity 13 structure, which effectively prevents dust accumulation by optimizing the material flow path, fundamentally solving common industry problems such as valve jamming. In addition, the filter body is made of high-strength lightweight composite material, which significantly reduces the weight of the equipment while ensuring structural strength, greatly reducing the difficulty of handling and installation. This utility model is specifically designed for applications involving powder material collection, with a perfectly adaptable structure, such as fine processing of metal powders, raw material crushing in the pharmaceutical industry, and powder processing in the building materials field.

[0061] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A quick-release dust collection and return device, comprising: The body, filter element, and backflush assembly are characterized in that, The main body has a hollow structure and is provided with three cavities: an upper cavity, a middle cavity, and a lower cavity; The upper cavity wall is provided with an exhaust port; The filter element is detachably installed in the central cavity; The backflush assembly includes an air bag and a backflush pipe. The air bag is located outside the main body. One end of the backflush pipe is connected to the air bag, and the other end passes through the side wall of the upper cavity and a portion of the backflush pipe extends into the filter element for blowing air into the filter element. The lower cavity wall is provided with a dust inlet and a return outlet, wherein the dust inlet and the return outlet are the same opening or different openings; The upper cavity and the middle cavity are detachably connected, and the middle cavity and the lower cavity are detachably connected.

2. The quick-release dust collection and return device according to claim 1, characterized in that, The dust inlet and the return outlet are the same opening and are located at the bottom of the lower cavity; the lower cavity is wedge-shaped, and the dust inlet of the lower cavity is connected to a butterfly valve.

3. The quick-release dust collection and return device according to claim 1, characterized in that, The upper cavity and the middle cavity are connected by a V-shaped clamp, and the middle cavity and the lower cavity are connected by a V-shaped clamp.

4. The quick-release dust collection and return device according to claim 1, characterized in that, A ring-shaped filter element support platform is detachably installed on the top of the central cavity. A ring-shaped flange is provided on the outer periphery of the top of the filter element, and the ring-shaped flange of the filter element is supported on the ring-shaped filter element support platform.

5. The quick-release dust collection and return device according to claim 4, characterized in that, Multiple longitudinally extending lead screws are fixedly installed on the annular filter element support platform. The multiple lead screws are located on the outer periphery of the annular flange of the filter element. The quick-release dust collection and return device also includes multiple strip-shaped pressure blocks, multiple nuts, and multiple spring blocks. The strip-shaped pressure blocks are placed horizontally across the upper surface of the filter element, with a lead screw passing through each end. The two ends of the pressure blocks are locked to the lead screws by nuts and spring washers.

6. The quick-release dust collection and return device according to claim 2, characterized in that, The exhaust port is connected to an exhaust pipe, and the exhaust pipe is connected to an air extraction device.

7. The quick-release dust collection and return device according to any one of claims 1-6, characterized in that, The central cavity is made of PP material.

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