Filtering chlorinated alkane colored fireproof coating production feeding equipment

Abstract

The utility model discloses filter formula chlorinated alkane colored fire -retardant paint production feeding equipment, including paint production line, nitrogen tank, storage tank, filter box, cyclone separator, explosion -proof butterfly valve and weightlessness scale. The utility model adopts the mode that nitrogen is passed into and forms inert environment and is combined with non - mechanical screening technique, and the dynamic classification of powder is realized through directional nitrogen flow field, and the impurity of first sedimentation is more than 50um, and the qualified powder is carried a certain distance by airflow and is collected after being intercepted by metal filter screen, realizes the double effect of grading filtration and metal impurity removal, and the mixing uniformity of subsequent colored fire -retardant paint production is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of colored fire-retardant coating technology, and in particular to a filter-type chlorinated alkane colored fire-retardant coating production feeding equipment. Background Technology

[0002] When producing colored fire-retardant coatings using powdered chlorinated alkane flame retardants (such as chlorinated paraffin type 70 white powder), fine filtration is required during the feeding stage to prevent impurities and agglomerated powder from affecting the final product quality. Existing publicly available technology proposes a fire-retardant coating mixing mechanism, including a cylindrical feeding cylinder, a quantitative feeding mechanism, a feeding box, a dispersing mechanism, a mixing tank, a stirring shaft, and stirring blades. This technology claims to solve two major problems existing in traditional mixing mechanisms: ① insufficient quantitative feeding accuracy; ② powder agglomeration caused by long-term storage, thus avoiding the problem of uneven mixing that occurs during direct mixing.

[0003] However, experimental verification revealed that the above-mentioned technology still has significant defects: the dispersing mechanism can only break up macroscopic agglomerates, and the particle size distribution of the powder after processing is still uneven (D50>80μm); in addition, no graded filtration device is set up, so it is impossible to remove metal impurities <50μm. The above defects affect the uniformity of mixing during the subsequent production of colored fire retardant coatings. Therefore, it is necessary to develop a filter-type chlorinated alkane colored fire retardant coating production feeding equipment to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a filter-type feeding device for the production of colored fire-retardant coatings containing chlorinated alkane.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a filter-type chlorinated alkane colored fire-retardant coating production and feeding equipment, including a coating production line, a nitrogen tank, a storage tank, a filter box, a cyclone separator, an explosion-proof butterfly valve, and a loss-in-weight scale. The left wall of the filter box is equipped with an air blowing pipe for connection to the nitrogen tank. The end of the air blowing pipe away from the nitrogen tank penetrates the left wall of the filter box and extends into the interior of the filter box. The end of the air blowing pipe extending into the filter box is fixedly connected to an air blowing structure. A top plate is provided on the upper side of the filter box, and the storage tank is fixedly connected to the upper wall of the top plate. A discharge pipe is provided at the lower end of the storage tank. A screw is installed on the inner wall of the feed pipe. The end of the discharge pipe away from the storage tank passes through the upper wall of the filter box and extends into the interior of the filter box. A vibrating motor for assisting discharge is installed on the outer wall of the storage tank. An air outlet pipe is fixedly connected to the upper wall of the filter box on the side away from the discharge pipe. An interception structure is fixedly connected to the end of the air outlet pipe that extends into the filter box. The end of the air outlet pipe that extends out of the filter box is connected to a cyclone separator. An impurity collection box and a cone are arranged in sequence on the lower inner wall of the filter box. A baffle is installed on the upper wall of the impurity collection box. A rupture disc and a flameless explosion relief valve are also installed on the top of the filter box.

[0006] As a further description of the above technical solution:

[0007] A drive motor is fixedly connected to the top of the storage tank via a motor base. The end of the output shaft of the drive motor passes through the upper wall of the storage tank and extends into the interior of the storage tank. A connecting rod is fixedly connected to the end of the output shaft of the drive motor, and a screw is fixedly connected to the end of the connecting rod away from the drive motor.

[0008] As a further description of the above technical solution:

[0009] The air blowing structure includes an air blowing hood, an air blowing plate, and an air distribution mesh. The air blowing hood is fixedly connected to the left inner wall of the filter box. One end of the air blowing pipe extending into the filter box is fixedly connected to the left wall of the air blowing hood. The air blowing pipe is connected to the inside of the air blowing hood. The air blowing plate is fixedly connected to the inner wall of the air blowing hood in a left-high-right-low shape. The air blowing plate has multiple sets of micropores with a pore size of 20-50μm. One end of the discharge pipe extending into the filter box is vertically opposite to the air blowing plate. The air distribution mesh is fixedly connected to the side of the air blowing plate away from the discharge pipe.

[0010] When nitrogen enters through the blowing pipe, the airflow diffuses through the blowing hood and then passes through the uniform airflow mesh and the micropores of the blowing plate to accelerate, forming a laminar air curtain, which allows the falling powder to be suspended and dispersed within a 0.5m range below the discharge pipe.

[0011] As a further description of the above technical solution:

[0012] The interception structure includes an interception box and a sintered metal filter. The interception box is fixedly connected to one end of the air outlet pipe that extends into the filter box. The interception box is shaped with the left side higher than the right side. The horizontal height of the interception box is consistent with the height of the air blowing structure. The sintered metal filter is fixedly connected to the end of the interception box away from the air outlet pipe. The pore size of the sintered metal filter is ≤10μm. The sintered metal filter is grounded.

[0013] A laminar air curtain carries the falling powder towards the outlet pipe. By controlling the air volume, impurities in the powder, equal to portions of the powder with different weights, can fall ahead of time. These impurities are collected by an impurity collection box, while powder meeting the required fineness enters the conical hopper and is finally fed into the coating production line via a feeding pipe, an explosion-proof butterfly valve, and a loss-in-weight scale.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the cone is coated with polytetrafluoroethylene. A feeding pipe is fixedly connected to the lower end of the cone. The lower end of the feeding pipe penetrates the lower wall of the filter box. The explosion-proof butterfly valve and the loss-in-weight scale are arranged in a vertical arrangement at the lower end of the feeding pipe.

[0016] As a further description of the above technical solution:

[0017] A second feed pipe is fixedly connected to the side wall of the storage tank near the upper end, and the end of the second feed pipe away from the storage tank is fixedly connected to the first feed pipe through a connecting hose.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the storage tank is provided with four sets of fixing feet, all of which are fixedly connected to the upper wall of the top plate. A first buffer pad is provided between the fixing feet and the upper wall of the top plate.

[0020] As a further description of the above technical solution:

[0021] The outer wall of the discharge pipe is provided with a connecting flange, which is fixedly connected to the upper wall of the filter box, and a second buffer pad is provided between the connecting flange and the upper wall of the filter box.

[0022] With the above-mentioned design, when the vibration motor is working, the double buffer structure can absorb the high-frequency mechanical vibrations and prevent resonance from causing the connection parts to loosen.

[0023] As a further description of the above technical solution:

[0024] The outer wall of the filter box is provided with four sets of support frames, the upper and lower ends of the four sets of support frames extend toward the upper and lower sides of the filter box respectively, and the top plate is fixedly connected to the upper end of the four sets of support frames.

[0025] This utility model has the following beneficial effects:

[0026] Compared with existing technologies, this filter-type chlorinated alkane colored fire-retardant coating production feeding equipment adopts a method that combines nitrogen gas to create an inert environment with non-mechanical sieving technology. Through a directional nitrogen gas flow field, dynamic classification of powder is achieved. Impurities >50μm settle first, while qualified powder is carried by the airflow a certain distance and then intercepted by a metal filter screen before being collected. This achieves the dual effect of graded filtration and removal of metal impurities, significantly improving the mixing uniformity of subsequent colored fire-retardant coating production. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the filter-type chlorinated alkane colored fire-retardant coating production feeding equipment proposed in this utility model.

[0028] Figure 2 The present invention provides a filter-type feeding device for the production of colored fire-retardant coatings containing chlorinated alkane. Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 The present invention provides a filter-type feeding device for the production of colored fire-retardant coatings containing chlorinated alkane. Figure 1 A magnified view of a section at point B in the middle;

[0030] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the filter box in the filter-type chlorinated alkane colored fire-retardant coating production feeding equipment proposed in this utility model.

[0031] Legend:

[0032] 1. Filter box; 2. Support frame; 3. Top plate; 4. Storage tank; 401. Fixing foot; 402. Discharge pipe; 403. Connecting flange; 5. Motor base; 6. Drive motor; 7. Second feed pipe; 8. First feed pipe; 9. Connecting hose; 10. Vibration motor; 11. Air blowing pipe; 12. Air outlet pipe; 13. Feeding pipe; 14. First buffer pad; 15. Second buffer pad; 16. Connecting rod; 17. Screw; 18. Air blowing hood; 19. Air blowing plate; 20. Air distribution mesh; 21. Impurity collection box; 22. Enclosure; 23. Conical hopper; 24. Interception box; 25. Sintered metal filter screen. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1 to 4 The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment provided by this utility model includes a coating production line, a nitrogen tank, a storage tank 4, a filter box 1, a cyclone separator, an explosion-proof butterfly valve, and a loss-in-weight scale.

[0035] To achieve uniform nitrogen distribution and powder fluidization control, a blowing pipe 11 is provided on the left wall of the filter box 1 for connection to a nitrogen tank. The end of the blowing pipe 11 away from the nitrogen tank penetrates the left wall of the filter box 1 and extends into the interior of the filter box 1. A blowing structure is fixedly connected to the end of the blowing pipe 11 extending into the filter box 1. The blowing structure includes a blowing hood 18, a blowing plate 19, and a uniform air distribution mesh 20. The blowing hood 18 is fixedly connected to the inner left wall of the filter box 1. One end of the air pipe 1 extends into the filter box 1 and is fixedly connected to the left wall of the blower hood 18. The air blowing pipe 11 is connected to the inside of the blower hood 18. The blower plate 19 is fixedly connected to the inner wall of the blower hood 18 with the left side higher than the right side. The blower plate 19 is provided with multiple sets of micropores with a pore size of 20-50μm. One end of the discharge pipe 402 extends into the filter box 1 and is vertically opposite to the blower plate 19. The air distribution net 20 is fixedly connected to the side of the blower plate 19 away from the discharge pipe 402.

[0036] When nitrogen enters through the blowing pipe 11, the airflow is diffused by the blowing hood 18 and then passes through the uniform airflow net 20 and the micropores of the blowing plate 19 to accelerate, forming a laminar air curtain, so that the falling powder is suspended and dispersed within 0.5m below the discharge pipe 402.

[0037] To eliminate vibration transmission, a top plate 3 is provided on the upper side of the filter box 1. Four sets of support frames 2 are provided on the outer wall of the filter box 1. The upper and lower ends of the four sets of support frames 2 extend towards the upper and lower sides of the filter box 1, respectively. The top plate 3 is fixedly connected to the upper end of the four sets of support frames 2. The storage tank 4 is fixedly connected to the upper wall of the top plate 3. A second feed pipe 7 is fixedly connected to the side wall of the storage tank 4 near the upper end. The end of the second feed pipe 7 away from the storage tank 4 is fixedly connected to the first feed pipe 8 through a connecting hose 9. Four sets of fixing feet 401 are provided on the outer wall of the storage tank 4. All four sets of fixing feet 401 are fixedly connected to the upper wall of the top plate 3. A first buffer pad 14 is provided between the fixing feet 401 and the upper wall of the top plate 3. A connecting flange 403 is provided on the outer wall of the discharge pipe 402. The connecting flange 403 is fixedly connected to the upper wall of the filter box 1. A second buffer pad 15 is provided between the connecting flange 403 and the upper wall of the filter box 1.

[0038] When the vibration motor 10 is working, the double buffer structure can absorb more than 90% of the high-frequency mechanical vibration, preventing resonance from causing the connection parts to loosen.

[0039] In order to enable the powder to enter the filter box 1 from the storage tank 4, a discharge pipe 402 is provided at the lower end of the storage tank 4. A screw 17 is provided on the inner side wall of the discharge pipe 402. The end of the discharge pipe 402 away from the storage tank 4 passes through the upper wall of the filter box 1 and extends into the interior of the filter box 1. A drive motor 6 is fixedly connected to the top of the storage tank 4 through the motor base 5. The output shaft end of the drive motor 6 passes through the upper wall of the storage tank 4 and extends into the interior of the storage tank 4. A connecting rod 16 is fixedly connected to the output shaft end of the drive motor 6. The screw 17 is fixedly connected to the end of the connecting rod 16 away from the drive motor 6.

[0040] The drive motor 6 drives the connecting rod 16, which in turn drives the screw 17 to rotate, and the screw 17 outputs powder in a metered manner.

[0041] To solve the problem of powder bridging, a vibrating motor 10 for assisting material discharge is installed on the outer wall of the storage tank 4;

[0042] When the vibration motor 10 is working, it can effectively prevent the bridging of powder inside the storage tank 4 and destroy the powder agglomeration structure.

[0043] To ensure smooth airflow, an air outlet pipe 12 is fixedly connected to the upper wall of the filter box 1 on the side away from the discharge pipe 402. An interception structure is fixedly connected to one end of the air outlet pipe 12 that extends into the filter box 1, and the other end of the air outlet pipe 12 that extends out of the filter box 1 is connected to a cyclone separator. The interception structure includes an interception box 24 and a sintered metal filter screen 25. The interception box 24 is fixedly connected to the end of the air outlet pipe 12 that extends into the filter box 1. The interception box 24 is oriented with the left side higher than the right side, and its horizontal height is consistent with the height of the air blowing structure. The sintered metal filter screen 25 is fixedly connected to the end of the interception box 24 away from the air outlet pipe 12. The pore size of the sintered metal filter screen 25 is ≤10μm, and the sintered metal filter screen 25 is grounded.

[0044] Nitrogen gas flow carries fine powder toward the outlet pipe 12. As the gas flow weakens, the powder gradually falls into the cone hopper 23 and is collected. Some of the powder that is still moving with the gas flow is intercepted by the metal sintered filter screen 25. The interception box 24 is set with the left side higher than the right side, so that the powder intercepted on the surface of the metal sintered filter screen 25 will be blown off by the subsequent gas flow.

[0045] In order to classify and collect impurities and qualified powder, an impurity collection box 21 and a cone hopper 23 are arranged in a left-right distribution on the lower inner wall of the filter box 1. A baffle 22 is provided on the upper wall of the impurity collection box 21. A rupture disc and a flameless explosion relief valve are also provided on the top of the filter box 1. The inner wall of the cone hopper 23 is coated with polytetrafluoroethylene. A feeding pipe 13 is fixedly connected to the lower end of the cone hopper 23. The lower end of the feeding pipe 13 penetrates the lower wall of the filter box 1. An explosion-proof butterfly valve and a loss-in-weight scale are arranged in a vertical distribution at the lower end of the feeding pipe 13.

[0046] The laminar air curtain carries the falling powder towards the air outlet pipe 12. By controlling the amount of air, impurities in the powder can be made to fall down in advance, and the impurities are collected by the impurity collection box 21. The powder with the required fineness enters the cone hopper 23 and is finally fed into the coating production line through the feeding pipe 13, the explosion-proof butterfly valve and the loss-in-weight scale.

[0047] Working principle: When nitrogen enters through the blowing pipe 11, the airflow diffuses through the blowing hood 18, then passes through the uniform air distribution net 20 and the micropores of the blowing plate 19 for acceleration, forming a laminar air curtain, which suspends and disperses the falling powder within 0.5m below the discharge pipe 402. When the vibration motor 10 is working, the double buffer structure can absorb more than 90% of the high-frequency mechanical vibration, preventing resonance from causing the connection to loosen. The drive motor 6 drives the connecting rod 16, which drives the screw 17 to rotate, and the screw 17 outputs the powder in a quantitative manner. When the vibration motor 10 is working, it can effectively prevent the powder inside the storage tank 4 from bridging and destroy the powder agglomeration structure. The nitrogen airflow carries... Powder with acceptable fineness moves toward the air outlet pipe 12. As the airflow weakens, the powder gradually falls into the cone hopper 23 and is collected. Some powder that is still moving with the airflow is intercepted by the metal sintered filter screen 25. By setting the interception box 24 with the left side higher than the right side, the powder intercepted on the surface of the metal sintered filter screen 25 will be blown off by the subsequent airflow. The laminar air curtain carries the falling powder toward the air outlet pipe 12. By controlling the amount of air, the impurities in the powder can be made to fall down in advance if they are equal to different weights of the powder. The impurities are collected by the impurity collection box 21. Powder with acceptable fineness enters the cone hopper 23 and is finally fed to the coating production line through the feeding pipe 13, the explosion-proof butterfly valve and the loss-in-weight scale.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter-type feeding device for producing colored fire-retardant coatings of chlorinated alkane, characterized in that: The system includes a paint production line, a nitrogen tank, a storage tank (4), a filter box (1), a cyclone separator, an explosion-proof butterfly valve, and a loss-in-weight scale. The filter box (1) has a blow pipe (11) on its left wall for connection to the nitrogen tank. The end of the blow pipe (11) away from the nitrogen tank passes through the left wall of the filter box (1) and extends into the interior of the filter box (1). The end of the blow pipe (11) extending into the filter box (1) is fixedly connected to a blow structure. A top plate (3) is provided on the upper side of the filter box (1). The storage tank (4) is fixedly connected to the upper wall of the top plate (3). A discharge pipe (402) is provided at the lower end of the storage tank (4). A screw (17) is provided on the inner wall of the discharge pipe (402). The discharge pipe (402) is located away from the storage tank. 4) One end penetrates the upper wall of the filter box (1) and extends into the interior of the filter box (1). The outer wall of the storage tank (4) is provided with a vibration motor (10) for assisting discharge. The upper wall of the filter box (1) and the side away from the discharge pipe (402) are fixedly connected to an air outlet pipe (12). One end of the air outlet pipe (12) extending into the interior of the filter box (1) is fixedly connected to an interception structure. One end of the air outlet pipe (12) extending out of the filter box (1) is connected to a cyclone separator. The lower inner wall of the filter box (1) is provided with an impurity collection box (21) and a cone bucket (23) arranged in a left-right distribution. The upper wall of the impurity collection box (21) is provided with a baffle (22). The top of the filter box (1) is also provided with a rupture disc and a flameless explosion relief valve.

2. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The top of the storage tank (4) is fixedly connected to a drive motor (6) via a motor base (5). The output shaft end of the drive motor (6) passes through the upper wall of the storage tank (4) and extends into the interior of the storage tank (4). A connecting rod (16) is fixedly connected to the output shaft end of the drive motor (6). The screw (17) is fixedly connected to the end of the connecting rod (16) away from the drive motor (6).

3. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The air blowing structure includes an air blowing hood (18), an air blowing plate (19), and an air distribution net (20). The air blowing hood (18) is fixedly connected to the left inner wall of the filter box (1). One end of the air blowing pipe (11) extending into the filter box (1) is fixedly connected to the left wall of the air blowing hood (18). The air blowing pipe (11) is in communication with the interior of the air blowing hood (18). The air blowing plate (19) is fixedly connected to the inner wall of the air blowing hood (18) with the left side higher than the right side. The air blowing plate (19) is provided with multiple sets of micropores with a pore diameter of 20-50μm. One end of the discharge pipe (402) extending into the filter box (1) is vertically opposite to the air blowing plate (19). The air distribution net (20) is fixedly connected to the side of the air blowing plate (19) away from the discharge pipe (402).

4. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The interception structure includes an interception box (24) and a sintered metal filter (25). The interception box (24) is fixedly connected to one end of the air outlet pipe (12) that extends into the filter box (1). The interception box (24) is shaped with the left side higher than the right side. The horizontal height of the interception box (24) is consistent with the height of the air blowing structure. The sintered metal filter (25) is fixedly connected to the end of the interception box (24) away from the air outlet pipe (12). The pore size of the sintered metal filter (25) is ≤10μm. The sintered metal filter (25) is grounded.

5. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The inner wall of the cone (23) is coated with polytetrafluoroethylene. The lower end of the cone (23) is fixedly connected to a feeding pipe (13). The lower end of the feeding pipe (13) penetrates the lower wall of the filter box (1). The explosion-proof butterfly valve and the loss-in-weight scale are arranged in sequence at the lower end of the feeding pipe (13).

6. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: A second feed pipe (7) is fixedly connected to the side wall of the storage tank (4) near the upper end. The end of the second feed pipe (7) away from the storage tank (4) is fixedly connected to the first feed pipe (8) through a connecting hose (9).

7. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The storage tank (4) has four sets of fixing feet (401) on its outer wall. All four sets of fixing feet (401) are fixedly connected to the upper wall of the top plate (3). A first buffer pad (14) is provided between the fixing feet (401) and the upper wall of the top plate (3).

8. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The outer wall of the discharge pipe (402) is provided with a connecting flange (403), the connecting flange (403) is fixedly connected to the upper wall of the filter box (1), and a second buffer pad (15) is provided between the connecting flange (403) and the upper wall of the filter box (1).

9. The filter-type chlorinated alkane colored fire-retardant coating production feeding equipment according to claim 1, characterized in that: The filter box (1) is provided with four sets of support frames (2) on its outer wall. The upper and lower ends of the four sets of support frames (2) extend toward the upper and lower sides of the filter box (1) respectively. The top plate (3) is fixedly connected to the upper end of the four sets of support frames (2).

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