Floating dust treatment device for superfine calcium carbonate production

Abstract

The utility model discloses a floating dust treatment device for superfine calcium carbonate production, and relates to the technical field of floating dust treatment. The device comprises a production tank and a filter box, a first ventilation pipe is fixedly connected between the production tank and the filter box, a wind power assembly is arranged on the end face, away from the first ventilation pipe, of the filter box, and a filter part is clamped in the filter box; a cover plate is placed on the upper side of the filter box, a pressing block corresponding to the filter part is arranged below the cover plate and clamped in the filter box, a connecting plate is elastically matched in the cover plate, and extension plates are arranged on the two sides of the connecting plate. Floating dust is guided to enter the filter box through the first ventilation pipe, negative pressure airflow is formed in cooperation with the wind power assembly to force the floating dust to penetrate through the filter part to be intercepted, the filter part clamped into the filter box is pressed through the pressing block, meanwhile, the extrusion part is rotated to push the connecting plate, the extending plate and the clamping block to move, and therefore the clamping block is clamped into the C-shaped block, and the dust removal effect is achieved. The cover plate is fixed, and the filter piece is pressed.

Description

Technical Field

[0001] This utility model belongs to the field of dust treatment, specifically, it relates to a dust treatment device for the production of ultrafine calcium carbonate. Background Technology

[0002] The dust treatment device for the production of ultrafine calcium carbonate is an integrated system for collecting, filtering and recycling ultrafine dust generated during the production process. Its core function is to suppress dust diffusion, ensure the safety of the workshop environment, and at the same time achieve efficient recovery of calcium carbonate powder and reduce raw material loss.

[0003] Chinese Patent No. CN216170825U discloses a dust treatment device for the production of ultrafine calcium carbonate, comprising: a production tank, a support rod, a first ventilation pipe, an exhaust fan, a second ventilation pipe, a filter box, a sealing cover, a third ventilation pipe, a mesh cloth, a dust collection filter, a first fixing block, a second fixing block, bolts, nuts, a dust concentration monitor, and a CNC module. One end of the first ventilation pipe extends into the production tank and is connected to it, and is positioned near the top of the production tank. The end of the first ventilation pipe away from the production tank is connected and fixed to one end of the exhaust fan. The end of the exhaust fan away from the first ventilation pipe is connected and fixed to one end of the second ventilation pipe. The end of the second ventilation pipe away from the exhaust fan is connected and fixed to one end of the filter box.

[0004] The dust treatment device for the production of ultrafine calcium carbonate disclosed in the application requires the sealing cover at the top of the filter box to be tightened manually one by one by four bolts through fixing block one and fixing block two. During installation and disassembly, the operator needs to repeatedly tighten multiple bolts, which is cumbersome and time-consuming. In frequent maintenance scenarios, bolts are prone to being lost or threads are stripped, which can affect the replacement efficiency of the dust collection filter. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a dust treatment device for the production of ultrafine calcium carbonate, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A dust treatment device for the production of ultrafine calcium carbonate includes: a production tank and a filter box. A ventilation pipe is fixedly connected between the production tank and the filter box. The ventilation pipe is connected to the inner cavity of the production tank and is located at the upper part of the production tank. A wind-powered component is provided on the end face of the filter box away from the ventilation pipe. Both the ventilation pipe and the wind-powered component are connected to the inner cavity of the filter box. A filter element is snapped into the filter box.

[0008] A cover plate is placed on the upper side of the filter box. Under the cover plate, there is a clamping block corresponding to the filter element. The clamping block is snapped into the filter box. A connecting plate is elastically fitted inside the cover plate. Extension plates are provided on both sides of the connecting plate. Two locking blocks are provided on the opposite outer sides of the two extension plates. A pressing element corresponding to the connecting plate is threaded on one side of the cover plate. C-shaped blocks are welded to the upper part of both sides of the filter box. The locking blocks are snapped into the C-shaped blocks.

[0009] Optionally, a load-bearing rod is welded to the side of the production tank, and the load-bearing rod is welded to the bottom of the filter box.

[0010] Optionally, the wind power component includes a second ventilation duct fixedly connected to one end of the filter box. A motor is installed inside the second ventilation duct, and a fan blade is fixedly connected to the motor output shaft. Three support plates are installed on the side of the fan blade, and the support plates are installed on the inner wall side of the second ventilation duct.

[0011] Optionally, a dustproof screen is installed on the end of the ventilation duct away from the filter box.

[0012] Optionally, the filter box is provided with a placement groove on the upper side, in which the filter element and the clamping block are snapped into the placement groove. The filter box is provided with a vent corresponding to the filter element in the horizontal direction. The vent passes through the filter box and the placement groove, and is connected to ventilation pipe one and ventilation pipe two.

[0013] Optionally, the filter element includes a cylinder that is snapped into a placement groove, the inner diameter of the cylinder being equal to the diameter of the vent, a clamping block being attached to the upper part of the cylinder, multiple filter plates being installed on the inner circumference of the filter element, the multiple filter plates being distributed horizontally at equal intervals, a pull plate being provided at the top of the cylinder, a cover plate and a clamping block having vertical openings that penetrate the cover plate and the clamping block, the pull plate penetrating the openings, and a horizontal insertion hole being provided on the pull plate that penetrates the pull plate and is located above the cover plate.

[0014] Optionally, the cover plate has a groove corresponding to the connecting plate, the connecting plate slides in the groove, two springs are installed between the connecting plate and one side of the groove, the connecting plate is located between the spring and the extrusion part, the groove has channels on both sides, the extension plate slides in the channels, the cover plate has two slots on both sides, the slots are connected to the corresponding channels, and the locking block slides in one side of the slot.

[0015] Optionally, the extrusion component includes a knob, one end of which is provided with a screw, and one side of the cover plate is provided with a screw hole that communicates with the slide groove, with the screw threaded into the screw hole.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] Dust is guided into the filter box through the ventilation duct. The negative pressure airflow, combined with the wind power component, forces the dust to pass through the filter element for interception. The filter element is then pressed and clamped into the filter box by the clamping block. At the same time, the rotating extrusion component pushes the connecting plate, extension plate, and clamping block to move, thereby causing the clamping block to engage with the C-shaped block. This achieves the fixation of the cover plate and the clamping of the filter element, facilitating quick disassembly and assembly of the filter element and ensuring airtightness, thus reducing maintenance difficulty.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter box;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the cover plate.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] Production tank 1, ventilation pipe 1 2, filter box 3, placement slot 301, ventilation opening 302, C-shaped block 303, ventilation pipe 2 4, load-bearing rod 5, cover plate 6, clamping block 601, slide 602, channel 603, slot opening 604, screw hole 605, cylinder 7, filter plate 701, pull plate 702, connecting plate 8, extension plate 801, locking block 802, knob 9, screw 901, spring 10, motor 11, fan blade 1101, support plate 1102, dustproof net 12.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] In industrial production, the preparation of ultrafine calcium carbonate typically involves key steps such as crushing, grading, and drying. These operations easily generate a large number of micron-sized or even nano-sized dust particles. This dust not only pollutes the production environment and threatens the health of operators, but also poses safety hazards due to dust accumulation. To address this issue, common dust treatment devices include filtration, cyclone separators, and wet scrubbers. Among these, filtration devices are widely used due to their simple structure and wide applicability. Their core principle is to capture dust through physical interception or adsorption, such as using bag filters or cartridge filters. These devices typically consist of a dust collection hood, ventilation ducts, filter units, and a power unit. The filter unit contains multiple layers of filter media to enhance the interception effect. However, in the treatment of high-fineness, lightweight dust such as ultrafine calcium carbonate, traditional filtration devices suffer from problems such as easy clogging of the filter media, high replacement frequency, and insufficient sealing, leading to increased maintenance costs and potentially reduced filtration efficiency due to uneven airflow distribution.

[0029] Taking a typical filtration system as an example, its basic structure includes a ventilation duct connected to the production equipment, a filter box with built-in filter cartridges, and a fan to generate negative pressure. During production, dust particles are carried by the airflow through the ventilation duct into the filter box. After the dust is intercepted by the surface of the filter cartridges, clean air is discharged by the fan. The filter cartridges are usually cylindrical structures, filled with fiber filter media or porous metal filter screens. Some designs also use folded filter paper to increase the filtration area. However, such devices face many challenges in practical applications: First, the installation and replacement of the filter cartridges require disassembling the box cover, which is cumbersome and may lead to secondary leaks due to aging of the sealing gaskets; second, the filter cartridges are mostly fixed by bolt tightening or snap-locking, which can easily loosen due to vibration after long-term use, affecting the sealing performance; in addition, traditional filter cartridges have a single filtration stage, which has limited interception efficiency for ultrafine particles, requiring frequent cleaning or replacement of filter media, increasing downtime for maintenance.

[0030] In terms of application scenarios, the dust treatment device in an ultrafine calcium carbonate production line needs to adapt to the requirements of different process nodes. For example, in the drying stage, high-temperature and high-humidity airflow may cause dust to adhere to the filter media surface, accelerating clogging; while in the pulverizing stage, the instantaneous release of high-concentration dust places higher demands on the dust holding capacity and impact resistance of the filtration device. In existing technologies, some improved devices reduce the load on the main filtration unit by adding a pre-separation structure (such as a cyclone separator) or coating the filter cartridge surface with a hydrophobic coating to cope with humid environments. However, such improvements often lead to increased equipment size and energy consumption, and the complex structure further increases the difficulty of maintenance. In addition, the cover locking of traditional devices mostly relies on bolts or external clamps, requiring tools during operation, which is not only inefficient but also poses a risk of seal failure due to lost or damaged bolts.

[0031] Another common problem with existing filtration devices is the uniformity of airflow distribution. When dust enters the filter box from the ventilation duct, if the airflow path is not designed properly, it can easily create localized high-speed airflow, causing some filter media to become saturated prematurely, while other areas remain underutilized. Some solutions improve airflow distribution by installing baffles or flow equalization nets inside the filter box, but the installation position and angle of the baffles need to be precisely calculated, and they may become ineffective due to dust accumulation in practical applications. In addition, the traditional method of fixing filter cartridges makes quick assembly and disassembly difficult, especially in situations where frequent filter media replacement is required. Operators need to repeatedly tighten bolts or adjust clips, which is not only time-consuming and labor-intensive, but may also damage the filter cartridge or box structure due to improper operation.

[0032] In terms of material selection, traditional filter cartridges mostly use polyester fiber, glass fiber, or sintered metal materials. While these materials possess a certain level of filtration accuracy and mechanical strength, they may experience fiber breakage, pore blockage, or metal corrosion when in prolonged contact with ultrafine calcium carbonate particles. Some high-end equipment uses nanofiber composite filter media or surface membrane technology to improve filtration efficiency, but this significantly increases costs and imposes stringent maintenance requirements. Meanwhile, the housing structure of traditional devices is mostly a welded or bolted metal frame. Although it has high strength, it is prone to rusting in high humidity or corrosive environments, affecting its service life. In recent years, some manufacturers have attempted to improve this issue by using engineering plastics or anti-corrosion coatings, but the poor high-temperature resistance of plastic materials limits their application in high-temperature conditions.

[0033] Furthermore, existing dust collection devices typically have their power components separate from the filter housing, relying on an external fan to provide negative pressure. While this design facilitates fan maintenance, it increases duct length and the number of bends, leading to increased airflow resistance and energy consumption. Some integrated designs install the fan directly at the filter housing outlet, shortening the duct, but fan vibrations can be transmitted to the filter housing, affecting filter cartridge stability. Fan selection must also match the resistance characteristics of the filter unit; insufficient fan power results in insufficient negative pressure and dust escape, while excessive power may cause the filter media to break down due to excessive airflow velocity, leading to secondary pollution. Therefore, there is still room for optimization in the coordinated control of the fan and filter unit in traditional devices.

[0034] From a structural design perspective, existing filter devices mostly use flat-plate pressing for sealing, relying on rubber gaskets or silicone strips. However, with frequent opening and closing or temperature changes, the gaskets are prone to aging and deformation, leading to seal failure. Some improved solutions use groove-and-contact sealing or inflatable sealing rings, which improve sealing reliability, but are structurally complex and costly. Furthermore, the cover is often secured using peripheral bolts or hinged latches, requiring individual tightening or unlocking, which is inefficient, and the locking force may decrease over time. For applications requiring rapid filter media replacement, this design is clearly insufficient to meet the demands of high-efficiency production.

[0035] Overall, existing dust treatment devices for ultrafine calcium carbonate production still have significant shortcomings in terms of filtration efficiency, sealing reliability, ease of maintenance, and equipment lifespan. Optimizing the structural design of filter units, simplifying assembly and disassembly processes, improving airflow distribution, and enhancing sealing performance without significantly increasing costs have become key directions for technological improvement in this field. In the future, combining modular design, intelligent sensing technology, and the application of new filter materials may offer new possibilities for improving the performance of dust treatment devices.

[0036] Please see Figure 1-3 As shown, this embodiment provides a dust treatment device for the production of ultrafine calcium carbonate, including: a production tank 1 and a filter box 3. A ventilation pipe 2 is fixedly connected between the production tank 1 and the filter box 3. The ventilation pipe 2 is connected to the inner cavity of the production tank 1 and is located at the upper part of the production tank 1. A wind power component is provided on the end face of the filter box 3 away from the ventilation pipe 2. Both the ventilation pipe 2 and the wind power component are connected to the inner cavity of the filter box 3. A filter element is snapped into the filter box 3.

[0037] A cover plate 6 is placed on the upper side of the filter box 3. A clamping block 601 corresponding to the filter element is provided under the cover plate 6. The clamping block 601 is snapped into the filter box 3. A connecting plate 8 is elastically fitted inside the cover plate 6. An extension plate 801 is provided on both sides of the connecting plate 8. Two locking blocks 802 are provided on the outer sides of the two extension plates 801. A pressing element corresponding to the connecting plate 8 is threaded on one side of the cover plate 6. C-shaped blocks 303 are welded to the upper part of both sides of the filter box 3. The locking blocks 802 are snapped into the C-shaped blocks 303.

[0038] One application of this embodiment is as follows: During use, the wind turbine assembly is activated to create a negative pressure airflow, causing the floating dust in the production tank 1 to enter the filter box 3 through the ventilation pipe 2, forcing the dust to pass through the filter element for interception. When it is necessary to disassemble the filter element, rotating the extruder releases the extrusion limit on the connecting plate 8. At this time, the connecting plate 8, under the action of elasticity, drives the extension plate 801 and the locking block 802 to move towards the extruder, thereby causing the locking block 802 to slide out from the C-shaped block 303. Then, pulling up the cover plate 6 pulls the clamping block 601 out from the filter box 3, allowing for quick disassembly and replacement of the filter element. Similarly, referring to the above operation, the cover plate 6 can be fixed by rotating the extruder in the opposite direction, pushing the connecting plate 8 towards the production tank 1, causing the locking block 802 to lock into the C-shaped block 303. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0039] Dust is guided into the filter box 3 through the ventilation duct 2. The negative pressure airflow formed by the wind power component forces the dust to pass through the filter element for interception. The filter element is pressed and locked into the filter box 3 by the clamping block 601. At the same time, the connecting plate 8, the extension plate 801 and the locking block 802 are pushed to move by the rotating extrusion component, so that the locking block 802 is locked into the C-shaped block 303, thereby fixing the cover plate 6 and pressing the filter element. This facilitates quick disassembly and assembly of the filter element, ensures airtightness, and reduces maintenance difficulty.

[0040] like Figure 1 As shown, in this embodiment, a load-bearing rod 5 is welded to the side of the production tank 1. The load-bearing rod 5 is welded to the bottom of the filter box 3. By supporting the filter box 3 with the load-bearing rod 5, the probability of breakage at the connection between the ventilation pipe 2 and the production tank 1 is reduced.

[0041] like Figure 1 , 2As shown, the wind power component in this embodiment includes a second ventilation pipe 4 fixedly connected to one end face of the filter box 3. A motor 11 is installed inside the second ventilation pipe 4. The output shaft of the motor 11 is fixedly connected to a fan blade 1101. Three support plates 1102 are installed on the side of the fan blade 1101. The support plates 1102 are installed on the inner wall side of the second ventilation pipe 4. The motor 11 drives the fan blade 1101 to rotate. The support plates 1102 fix the position of the motor 11, forming a stable negative pressure airflow. This ensures that floating dust enters the filter box 3 efficiently and passes through the filter element, while reducing the probability of floating dust adhering to the motor 11 and the fan blade 1101.

[0042] like Figure 2 As shown, in this embodiment, a dustproof net 12 is installed on the end face of the ventilation pipe 2 4 away from the filter box 3. By installing a dustproof net 12 at the end of the ventilation pipe 2 4, impurities in the external environment are blocked from entering the ventilation pipe 2 4.

[0043] like Figure 2 As shown, the filter box 3 in this embodiment has a placement groove 301 on its upper side. The filter element and the clamping block 601 are both snapped into the placement groove 301. The filter box 3 has a vent 302 corresponding to the filter element in the horizontal direction. The vent 302 passes through the filter box 3 and the placement groove 301. The vent 302 is connected to the ventilation pipe 2 and the ventilation pipe 4. The placement groove 301 facilitates the precise positioning of the filter element and the clamping block 601. The vent 302 connects the ventilation pipe 2 and the ventilation pipe 4 to ensure that the airflow passes through the filter element in a concentrated manner, reducing air leakage.

[0044] like Figure 2 , 3 As shown, the filter element in this embodiment includes a cylindrical body 7 that is snapped into a placement groove 301. The inner diameter of the cylindrical body 7 is equal to the diameter of the vent 302. A clamping block 601 is attached to the upper part of the cylindrical body 7. Multiple filter plates 701 are installed on the inner wall of the filter element. The multiple filter plates 701 are distributed horizontally at equal intervals. A pull plate 702 is provided at the top of the cylindrical body 7. The cover plate 6 and the clamping block 601 are vertically provided with openings. The openings penetrate the cover plate 6 and the clamping block 601. The pull plate 702 penetrates the openings. The pull plate 702 is horizontally provided with insertion holes. The insertion holes penetrate the pull plate 702 and are located above the cover plate 6. The multiple filter plates 701 intercept floating dust step by step. Combined with the design of the pull plate 702 penetrating the cover plate 6 and the clamping block 601, it is convenient to quickly remove the cylindrical body 7 by pulling the pull plate 702, reducing the operational complexity of replacing the filter element and improving maintenance efficiency. The insertion holes make it convenient for users to insert their fingers to pull the pull plate 702.

[0045] like Figure 3As shown, the cover plate 6 in this embodiment is provided with a sliding groove 602 corresponding to the connecting plate 8. The connecting plate 8 is slidably fitted in the sliding groove 602. Two springs 10 are installed between the connecting plate 8 and one side of the sliding groove 602. The connecting plate 8 is located between the springs 10 and the extruder. Both sides of the sliding groove 602 are provided with channels 603. The extension plate 801 is slidably fitted in the channels 603. Both sides of the cover plate 6 are provided with two slots 604. The slots 604 are connected to the corresponding channels 603. One side of the locking block 802 is slidably fitted in the slot 604. Through the cooperation of the sliding groove 602 and the springs 10, the extension plate 801 and the locking block 802 can move smoothly along the channels 603 and the slots 604 when the extruder is operated, thereby improving the reliability of locking and releasing the cover plate 6.

[0046] like Figure 3 As shown, the extrusion component in this embodiment includes a knob 9, with a screw 901 on one end face of the knob 9. A screw hole 605 communicating with the slide groove 602 is provided on one side of the cover plate 6. The screw 901 is threaded into the screw hole 605. By turning the knob 9, the screw 901 pushes the connecting plate 8 to move linearly in the slide groove 602, providing stable mechanical pressure to ensure that the locking block 802 and the C-shaped block 303 are tightly locked together, thereby improving the anti-loosening ability of the cover plate 6 after it is fixed.

[0047] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A dust treatment device for the production of ultrafine calcium carbonate, characterized in that, include: Production tank (1) and filter box (3). A ventilation pipe (2) is fixedly connected between the production tank (1) and the filter box (3). A wind power component is provided on the end face of the filter box (3) away from the ventilation pipe (2). A filter element is snapped into the filter box (3). A cover plate (6) is placed on the upper side of the filter box (3). A clamping block (601) corresponding to the filter element is provided under the cover plate (6). The clamping block (601) is snapped into the filter box (3). A connecting plate (8) is elastically fitted inside the cover plate (6). An extension plate (801) is provided on both sides of the connecting plate (8). Two locking blocks (802) are provided on the opposite outer sides of the two extension plates (801). A pressing element corresponding to the connecting plate (8) is threaded on one side of the cover plate (6). C-shaped blocks (303) are welded to the upper part of both sides of the filter box (3). The locking blocks (802) are snapped into the C-shaped blocks (303).

2. The dust treatment device for ultrafine calcium carbonate production according to claim 1, characterized in that, The production tank (1) has a load-bearing rod (5) welded to the side, and the load-bearing rod (5) is welded to the bottom of the filter box (3).

3. The dust treatment device for ultrafine calcium carbonate production according to claim 1, characterized in that, The wind power assembly includes a second ventilation pipe (4) fixedly connected to one end face of the filter box (3). A motor (11) is installed inside the second ventilation pipe (4). The output shaft of the motor (11) is fixedly connected to a fan blade (1101). Three support plates (1102) are installed on the side of the fan blade (1101). The support plates (1102) are installed on the inner wall side of the second ventilation pipe (4).

4. A dust treatment device for ultrafine calcium carbonate production according to claim 3, characterized in that, A dustproof net (12) is installed on the end face of the ventilation pipe (4) away from the filter box (3).

5. A dust treatment device for ultrafine calcium carbonate production according to claim 1, characterized in that, The filter box (3) has a placement groove (301) on the upper side, and the filter element and the clamping block (601) are both snapped into the placement groove (301). The filter box (3) has a vent (302) corresponding to the filter element in the horizontal direction.

6. A dust treatment device for ultrafine calcium carbonate production according to claim 5, characterized in that, The filter element includes a cylinder (7) that is snapped into a placement groove (301), multiple filter plates (701) are installed on the inner wall of the filter element, a pull plate (702) is provided on the top of the cylinder (7), and a cover plate (6) and a pressing block (601) are provided with vertical openings, through which the pull plate (702) passes.

7. A dust treatment device for ultrafine calcium carbonate production according to claim 1, characterized in that, The cover plate (6) is provided with a groove (602) corresponding to the connecting plate (8), and two springs (10) are installed between the connecting plate (8) and one side of the groove (602).

8. A dust treatment device for ultrafine calcium carbonate production according to claim 7, characterized in that, The extrusion part includes a knob (9), one end face of which is provided with a screw (901), and one side of the cover plate (6) is provided with a screw hole (605) that communicates with the slide groove (602), and the screw (901) is threaded in the screw hole (605).

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