A kind of filtering device for cable fire-retardant coating production and processing
By using a programmable controller-driven electric push rod in conjunction with the bump plate protrusion in the production of fire-retardant coatings for cables, irregular vibration of the filter frame is achieved, which solves the problem of powder particle accumulation in traditional filter devices, improves filtration efficiency, and meets the cycle time requirements of large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI XIONGAN RUNDIAN COMM TECH CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional filtration devices, due to fixed frequency or regular vibrations, cause powder particles to accumulate in the production of powdered cable fire-retardant coatings, affecting the filtration speed and failing to meet the needs of large-scale, high-efficiency production.
The electric push rod driven by a programmable controller works in conjunction with the bumps on the bump plate to generate irregular vibrations of the filter frame with no fixed frequency and no regular amplitude. This breaks the inertia of powder particle accumulation. The electric push rod drives the roller to move irregularly on the bump plate. Combined with the random height changes of the bumps, this achieves irregular vibration of the filter frame.
It significantly improves filtration speed, reduces the risk of screen pore clogging, and meets the needs of continuous and batch production in large-scale manufacturing.
Smart Images
Figure CN224574098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of coating production equipment, specifically a filtration device for the production and processing of fire-retardant coatings for cables. Background Technology
[0002] With the rapid development of the cable industry, fire-retardant coatings for cables play a crucial role in cable manufacturing and power systems. When exposed to fire, this coating generates a uniform and dense sponge-like foam insulation layer, effectively retardant the flame and prevent its spread, thus protecting wires and cables. In the production and processing of fire-retardant cable coatings, the filtration of raw materials is a crucial step in ensuring product quality. Raw materials undergo a transformation from powder to liquid coating, and filtration during this process is essential to guaranteeing the final product's quality and performance. From the perspective of powder raw materials, the powder composition of fire-retardant cable coatings is complex, containing inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide, organic flame retardants such as ammonium polyphosphate, and fillers such as calcium carbonate and talc. During production, storage, and transportation, impurities inevitably become mixed in. If these impurities and agglomerated particles directly enter subsequent mixing and dispersion processes, the powder will not be evenly dispersed in the liquid base, thus affecting the coating's flame-retardant properties. Currently, traditional filtration devices have several issues that need improvement, with the lack of irregular vibration frequencies being a particularly prominent one. Traditional filtration devices often use fixed filter screens or can only perform simple, regular vibrations. When powdery and lightweight raw material particles flow through the screen, the lack of irregular vibrations to break the particle's accumulation inertia easily leads to the formation of a stable accumulation layer on the screen, resulting in a significant slowdown in filtration speed. This makes it impossible to meet the demands of large-scale, high-efficiency production. Therefore, we have proposed a filtration device for the production and processing of fire-retardant coatings for cables to address the aforementioned problems. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a filtration device for the production and processing of fire-retardant coatings for cables. It solves the problem that fixed-frequency or regular vibrations cannot effectively break the accumulation inertia of powder particles, leading to the formation of a stable accumulation layer on the screen, thereby slowing down the filtration speed.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a filtration device for the production and processing of fire-retardant coatings for cables, comprising a filter box; A housing base is disposed inside the filter box, and a filter frame is placed inside the housing base; A connecting plate is fixed on both sides of the housing base, and one end of the connecting plate extends to the outside of the filter box, and a roller is provided at the end of the connecting plate located outside the filter box; Two sets of bumping plates are provided and fixedly installed on the outer sides of the filter box. The rollers can move on the bumping plates, and the bumps on the bumping plates are of different sizes. A drive mechanism, located on one side of the filter box, is used to drive the rollers on the connecting plate to move irregularly on the bumpy plate.
[0005] Preferably, the housing base is fixed with a first locking lug on both sides, and the filter frame is fixed with a second locking lug on both sides. The locking holes of the first and second locking lugs are corresponding, and anti-loss locking pins are inserted into the corresponding locking holes.
[0006] Preferably, the filter box has through openings on both sides, and the size of the through openings is larger than the size of the connecting plate. A dustproof cloth is provided at the gap between the filter box and the connecting plate. A U-shaped limiting guide seat is fixedly installed on both sides of the filter box near the connecting plate. Rollers are rotatably installed on three sides of the inner sidewall of the limiting guide seat via a rotating shaft.
[0007] Preferably, the drive mechanism includes an electric push rod fixedly installed on one side of the filter box, a universal joint fixedly installed at the output end of the electric push rod, connecting plates fixedly installed on both sides of the surface of a set of connecting plates, a crossbar fixed between the two sets of connecting plates, and one end of the universal joint fixedly connected to the crossbar. A programmable controller is also installed on one side of the filter box.
[0008] Preferably, the top opening of the filter box is provided with a cover plate, and there are symmetrically arranged elastic buckles on both sides between the cover plate and the filter box. A hopper is fixedly installed on the cover plate, and the top opening of the hopper is provided with a shell cover for sealing.
[0009] Preferably, the hopper is provided with a baffle to block it, and a first telescopic rod is fixed between the baffle and the filter box.
[0010] Preferably, an output mechanism for discharging filtered powder is installed at the bottom of the filter box. The output mechanism includes an arc-shaped plate fixed to the bottom of the filter box cavity, a spiral conveying rod inside the arc-shaped plate, a second servo motor for driving the spiral conveying rod to rotate fixedly installed on one side of the filter box, a discharge port on one side of the filter box, a sealing plate at the discharge port, an annular plate on one side of the sealing plate, multiple sets of guide rods fixed on the side of the annular plate near the sealing plate, circular holes adapted to the guide rods on the sealing plate, springs wound around the surface of the guide rods, and a pull rod fixed at a non-central location on one side of the sealing plate, with an L-shaped hook mounted on one end of the pull rod via a bearing. Beneficial effects
[0011] This utility model provides a filtration device for the production and processing of fire-retardant coatings for cables. Compared with the prior art, it has the following advantages: This filtration device for the production and processing of fire-retardant coatings for cables uses a programmable controller-driven electric push rod and a bumping plate to create irregular vibrations in the filter frame with no fixed frequency and amplitude. This vibration mode effectively breaks the inertia of powder raw materials accumulating on the screen, avoiding the stable accumulation layer phenomenon commonly seen in traditional fixed-frequency vibration. Under the action of irregular impact force, powder particles continuously roll and disperse, reducing the risk of screen pore blockage and significantly improving filtration speed. For high-viscosity, easily agglomerated fire-retardant coating raw materials in large-scale production, the filtration efficiency is effectively improved compared to traditional fixed vibration devices, meeting the cycle time requirements of continuous and batch production. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged cross-sectional view of the structure at point A; Figure 3 This is a schematic diagram showing the structure of the cover plate and hopper of this utility model after disassembly. Figure 4 This is a partial sectional view of the filter box structure of this utility model; Figure 5 This is a cross-sectional view of the filter box of this utility model from another perspective.
[0013] In the diagram: 101, filter box; 102, cover plate; 103, hopper; 104, shell cover; 105, baffle; 106, shell base; 107, filter frame; 108, connecting plate; 109, roller; 110, bumper plate; 111, limit guide seat; 112, dustproof cloth; 113, elastic buckle; 114, first telescopic rod; 2, drive mechanism; 201, electric push rod; 202, universal joint; 203, connecting plate; 3, output mechanism; 301, second servo motor; 302, arc plate; 303, spiral conveyor rod; 304, sealing plate; 305, spring; 306, annular plate; 307, guide rod. Detailed Implementation
[0014] 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.
[0015] like Figure 1-5 As shown: A filtration device for the production and processing of fire-retardant coatings for cables includes a filter box 101; The housing base 106 is located inside the filter box 101, and the filter frame 107 is placed inside the housing base 106. The housing base 106 is fixed with a first locking lug on both sides, and the filter frame 107 is fixed with a second locking lug on both sides. The locking holes of the first locking lug and the second locking lug are corresponding, and the corresponding locking holes are inserted with anti-loss locking pins. A connecting plate 108 is fixed on both sides of the housing base 106, and one end of the connecting plate 108 extends to the outside of the filter box 101. A roller 109 is provided at the end of the connecting plate 108 located outside the filter box 101. Through openings are provided on both sides of the filter box 101, and the size of the through openings is larger than the size of the connecting plate 108. A dustproof cloth 112 is provided at the gap between the filter box 101 and the connecting plate 108. A U-shaped limiting guide seat 111 is fixedly installed on both sides of the filter box 101 near the connecting plate 108. Rollers are rotatably installed on three sides of the inner side wall of the limiting guide seat 111 via a rotating shaft. Two sets of bump plates 110 are provided and are fixedly installed on the outer sides of the filter box 101. Rollers 109 can move on the bump plates 110. The bumps on the bump plates 110 are of different sizes. The drive mechanism 2 is located on one side of the filter box 101 and is used to drive the rollers 109 on the connecting plate 108 to move irregularly on the bump plate 110. The drive mechanism 2 includes an electric push rod 201 fixedly installed on one side of the filter box 101. A universal joint 202 is fixedly installed at the output end of the electric push rod 201. A connecting plate 203 is fixedly installed on both sides of the surface of a set of connecting plates 108. A crossbar is fixed between the two sets of connecting plates 203, and one end of the universal joint 202 is fixedly connected to the crossbar. A programmable controller is also installed on one side of the filter box 101. The top opening of the filter box 101 is provided with a cover plate 102. There are elastic buckles 113 arranged symmetrically on both sides between the cover plate 102 and the filter box 101. A hopper 103 is fixedly installed on the cover plate 102. The top opening of the hopper 103 is provided with a shell cover 104 for sealing. A baffle 105 is provided on the hopper 103 for sealing. A first telescopic rod 114 is fixed between the baffle 105 and the filter box 101.
[0016] In this implementation plan: When using the filter device for the production and processing of fireproof coating for cables, the raw materials are added through the hopper 103, and the shell cover 104 at the top of the hopper 103 can be sealed when no material is being fed to prevent dust from leaking out. The baffle 105 is connected by the first telescopic rod 114 and moves back and forth along the sliding opening of the filter box 101 and the hopper 103: when the first telescopic rod 114 retracts, the baffle 105 closes the bottom outlet of the hopper 103 and stops feeding; when the telescopic rod extends, the baffle 105 is pulled out, the bottom outlet of the hopper 103 opens, and feeding can be realized. The raw material enters the filter frame 107 in the filter box 101 as needed, realizing the control of the feeding amount. At the same time, when pouring material into the hopper 103, it is not poured into the filter frame 107 first to avoid excessive accumulation of raw material in the filter frame 107, which would affect the filtration efficiency. The raw material enters the filter frame 107 placed on the housing base 106. The filter frame 107 is connected and locked to the housing base 106 by the first locking lug, the second locking lug and the anti-loss locking pin to ensure that it will not fall off during the bumpy process. The programmable controller (not shown in the figure) pre-stores random control logic (such as generating non-periodic extension and retraction commands through random algorithms) and outputs dynamic control signals to the electric actuator 201, instructing its extension and retraction length, speed and frequency to change in an irregular pattern. The electric actuator 201 extends and retracts randomly according to the instructions of the programmable controller (such as sometimes extending by 10cm, sometimes shortening by 5cm, and sometimes extending and retracting at different speeds). Its output end is connected to the crossbar on the connecting plate 108 through the universal joint 202. The universal joint 202 allows a certain angular deviation between the electric actuator 201 and the crossbar. When the output direction of the electric actuator 201 changes slightly with extension and retraction, it can still stably transmit power to the connecting plate 108, avoiding structural jamming caused by rigid connection and ensuring the continuity of power transmission. Under the pushing and pulling action of the electric push rod 201, the connecting plate 108 reciprocates along the through openings on both sides of the filter box 101, while driving the rollers 109 at its end to move on the bump plate 110. The U-shaped limiting guide seats 111 on both sides of the filter box 101 limit the connecting plate 108 through the rollers on the three inner sides. On the other hand, the rolling of the rollers reduces the frictional resistance, making the movement of the connecting plate 108 smoother and reducing power loss. The dustproof cloth 112 at the through-hole extends and retracts synchronously with the movement of the connecting plate 108 to prevent paint dust in the filter box 101 from leaking out, while not affecting the normal movement of the connecting plate 108. The bumper plate 110 is covered with bumps of varying sizes. When the roller 109 moves along the bumper plate 110 under the drive of the electric push rod 201, it bounces up and down with the height of the bumps. When it encounters a large bump, the roller 109 is lifted up, causing the connecting plate 108 and the housing seat 106 to rise. When it encounters a small bump or a flat surface, the height of the roller 109 drops, and the housing seat 106 lowers accordingly. Since the extension and retraction length and speed of the electric push rod 201 are random, the movement speed and position of the roller 109 on the bumper plate 110 are not fixed. Combined with the randomness of the bump size, the amplitude and frequency of the up and down movement of the housing seat 106 are completely irregular. The housing seat 106 is fixedly connected to the connecting plate 108, and its irregular movement is directly transmitted to the internal filter frame 107. The irregular vibration of the filter frame 107 directly acts on the internal cable fireproof coating to achieve the filtration function. Open the cover 102 by releasing the elastic buckle 113 and pull out the anti-loss lock pin to remove the filter frame 107 from the housing base 106 for filter cleaning. The operation is convenient and solves the problem of difficult filter disassembly in traditional devices. This solution utilizes the coordinated action of the electric push rod 201 driven by a programmable controller and the protrusions of the bump plate 110 to generate irregular vibrations in the filter frame 107 with no fixed frequency and irregular amplitude. This vibration mode can effectively break the inertia of powder raw materials on the screen, avoiding the stable accumulation layer phenomenon commonly seen in traditional fixed-frequency vibration. The powder particles continuously tumble and disperse under the action of irregular impact force, reducing the risk of screen pore blockage and significantly improving the filtration speed. For high-viscosity, easily agglomerated fireproof coating raw materials in large-scale production, the filtration efficiency is effectively improved compared with traditional fixed vibration devices, which can meet the cycle time requirements of continuous and batch production.
[0017] It should be noted that all electrical equipment involved in this product is powered by an external power source. During use, each electrical device can be started and operated separately through a programmable controller. The power connection method of each electrical device is a mature existing technology and is well known to those skilled in the art, so it will not be elaborated further here.
[0018] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0019] Furthermore; In an optional embodiment, an output mechanism 3 for discharging filter powder is installed at the bottom of the filter box 101. The output mechanism 3 includes an arc-shaped plate 302 fixed to the bottom of the inner cavity of the filter box 101. A spiral conveying rod 303 is provided inside the arc-shaped plate 302. One end of the spiral conveying rod 303 is rotatably connected to the filter box 101 via a bearing. A second servo motor 301 is fixedly installed on one side of the filter box 101. The output end of the second servo motor 301 is fixedly connected to one end of the spiral conveying rod 303. The arc-shaped groove at the bottom of the arc-shaped plate 302 is adapted to the spiral conveying rod 303. A corresponding opening is provided on the side of the filter box 101 away from the second servo motor 301. The filter box 101 has a discharge port, and a sealing plate 304 is provided at the discharge port. An annular plate 306 is provided on one side of the sealing plate 304. Multiple guide rods 307 are fixed on the side of the annular plate 306 near the sealing plate 304. The other end of the guide rod 307 is fixedly connected to the filter box 101. A circular hole adapted to the guide rod 307 is opened on the sealing plate 304. The sealing plate 304 can slide on the surface of the guide rod 307 through the circular hole. A spring 305 is wound around the surface of the guide rod 307. The two ends of the spring 305 are fixedly connected to the sealing plate 304 and the annular plate 306 respectively. A pull rod is fixed at the non-center part of one side of the sealing plate 304, and an L-shaped hook is installed at one end of the pull rod through a bearing.
[0020] In this embodiment: the filtered raw material powder falls into the arc-shaped plate 302 at the bottom of the filter box 101. The second servo motor 301 drives the spiral conveyor rod 303 to rotate. The spiral blades push the powder along the arc groove of the arc plate 302 to the discharge port on one side of the filter box 101. The discharge port is sealed by the sealing plate 304. The sealing plate 304 is tightly attached to the discharge port under the elastic force of the spring 305. The guide rod 307 plays a guiding role. When discharging, the pull rod of the sealing plate 304 is pulled to overcome the elastic force of the spring 305 and make the sealing plate 304 slide along the guide rod 307 to open the discharge port. After the powder is discharged, the pull rod is released, the spring 305 resets and drives the sealing plate 304 to reseal, so as to avoid dust leakage when not discharging. One end of the pull rod is equipped with an L-shaped hook through the bearing. By screwing the L-shaped hook (not shown in the figure), it is fastened to the outside of the annular piece 306, which can temporarily lock the pulled sealing plate 304, eliminating the need to manually pull the pull rod (not shown in the figure) all the time, thus improving the convenience of this operation.
[0021] The working principle and usage process of this utility model: In use, the raw material is added through the hopper 103. The housing cover 104 at the top of the hopper 103 can be sealed when no material is being fed to prevent dust leakage. The baffle 105 is connected to the first telescopic rod 114 and can move back and forth along the sliding opening of the filter box 101 and the hopper 103 to control the amount of material fed. The filter frame 107 is connected and locked to the housing seat 106 through the first locking ear, the second locking ear and the anti-loss locking pin to ensure that it will not fall off during the bumping process. The programmable controller stores random control logic and outputs dynamic control signals to the electric push rod 201, instructing its extension length, speed and frequency to change in an irregular pattern to realize the irregular vibration of the filter frame 107. The roller 109 moves on the bump plate 110 and jumps up and down with the change of the height of the protrusion to realize the irregular vibration of the filter frame 107.
[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A filtration device for the production and processing of fire-retardant coatings for cables, characterized in that: Includes filter box (101); A housing base (106) is disposed inside the filter box (101), and a filter frame (107) is placed inside the housing base (106). A connecting plate (108) is fixed on both sides of the housing base (106), and one end of the connecting plate (108) extends to the outside of the filter box (101), and a roller (109) is provided at the end of the connecting plate (108) located outside the filter box (101). Two sets of bump plates (110) are provided and are fixedly installed on the outer sides of the filter box (101). The rollers (109) can move on the bump plates (110). The bumps on the bump plates (110) are of different sizes. The drive mechanism (2) is located on one side of the filter box (101) and is used to drive the roller (109) on the connecting plate (108) to move irregularly on the bump plate (110).
2. The cable fire retardant coating production processing filtering device according to claim 1, characterized in that: The housing base (106) is fixed with first locking lugs on both sides, and the filter frame (107) is fixed with second locking lugs on both sides. The locking holes of the first locking lugs and the second locking lugs are corresponding, and anti-loss locking pins are inserted into the corresponding locking holes.
3. The cable fire retardant coating production processing filtering device according to claim 1, characterized in that: The filter box (101) has through openings on both sides, and the size of the through openings is larger than that of the connecting plate (108). A dustproof cloth (112) is provided at the gap between the filter box (101) and the connecting plate (108). A U-shaped limiting guide seat (111) is fixedly installed on both sides of the filter box (101) near the connecting plate (108). Rollers are rotatably installed on three sides of the inner side wall of the limiting guide seat (111) via a rotating shaft.
4. The cable fire retardant coating production processing filtering device according to claim 2, characterized in that: The drive mechanism (2) includes an electric push rod (201) fixedly installed on one side of the filter box (101). A universal joint (202) is fixedly installed at the output end of the electric push rod (201). A connecting plate (203) is fixedly installed on both sides of the surface of a set of connecting plates (108). A crossbar is fixed between the two sets of connecting plates (203). One end of the universal joint (202) is fixedly connected to the crossbar. A programmable controller is also installed on one side of the filter box (101).
5. The cable fire retardant coating production processing filtering device according to claim 1, characterized in that: The filter box (101) has a cover plate (102) at the top opening. There are elastic buckles (113) arranged symmetrically on both sides between the cover plate (102) and the filter box (101). A hopper (103) is fixedly installed on the cover plate (102). The top opening of the hopper (103) is provided with a shell cover (104) for sealing.
6. The cable fire retardant coating production processing filtering device according to claim 5, characterized in that: The hopper (103) is provided with a baffle (105) for blocking it, and a first telescopic rod (114) is fixed between the baffle (105) and the filter box (101).
7. The cable fire retardant coating production processing filtering device according to claim 1, characterized in that: The filter box (101) is equipped with an output mechanism (3) for discharging filter powder at its bottom. The output mechanism (3) includes an arc-shaped plate (302) fixed to the bottom of the inner cavity of the filter box (101). A spiral conveying rod (303) is provided inside the arc-shaped plate (302). A second servo motor (301) for driving the spiral conveying rod (303) to rotate is fixedly installed on one side of the filter box (101). A discharge port is opened on one side of the filter box (101). A sealing plate (304) is provided at the discharge port. An annular piece (306) is provided on one side of the sealing plate (304). Multiple sets of guide rods (307) are fixed on the side of the annular piece (306) near the sealing plate (304). A circular hole adapted to the guide rod (307) is opened on the sealing plate (304). A spring (305) is wound around the surface of the guide rod (307). A pull rod is fixed at the non-center part of one side of the sealing plate (304), and an L-shaped hook is installed at one end of the pull rod through a bearing.