A foam extinguishing agent raw material screening machine

Abstract

The utility model discloses a foamed fire extinguishing agent production raw material screening machine relates to fire extinguishing agent production field, including cylinder, cylinder top fixedly connected with feed pipe, be provided with screening mechanism in the cylinder, be provided with scraping material discharging mechanism on screening mechanism, and scraping material discharging mechanism includes rotary seat, and rotary seat rotates and is installed in screening mechanism top, and the arc scraper and connecting rod are fixedly connected on rotary seat side wall, and the arc scraper is pasted with screening mechanism top. Beneficial effect lies in: rotary seat drives arc scraper circumferential motion, and arc scraper scrapes the impurity on screening mechanism to the impurity flow guide ring, and rotary seat drives the discharging block to do circumferential motion in the impurity flow guide ring through connecting rod, and the discharging block pushes the impurity and moves in the impurity flow guide ring, when the discharging block removes to the residue discharge port place, and the impurity is discharged through the residue discharge port, and the automatic discharge of impurity is realized like this, thereby need not frequently active cleaning screen, reduce the dismounting frequency, and use more convenient.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing agent production, and in particular to a screening machine for raw materials in the production of foam fire extinguishing agents. Background Technology

[0002] Foam extinguishing agents are effective extinguishing agents for flammable and combustible liquids. They mainly work by creating a cohesive foam floating layer on the liquid surface, which has a suffocating and cooling effect. The chemical foam in chemical foam extinguishing agents is usually generated by a chemical reaction between an acidic substance (aluminum sulfate) and an alkaline substance (sodium bicarbonate). During the preparation of chemical foam extinguishing agents, the acidic and alkaline aqueous solutions need to be sieved after preparation to prevent solids in the acidic and alkaline solutions from clogging the nozzles during subsequent use.

[0003] For example, patent document CN219273343U discloses a screening machine for raw materials in the production of foam fire extinguishing agents. It uses a screen to screen the fire extinguishing agent and a cleaning mechanism to scrape the side wall of the screen, which can remove solid impurities adhering to the screen and prevent the screen from clogging. After a period of use, by rotating the cover plate, the locking block and the locking groove can be released, so that the cover plate can be removed. Then, by rotating the screen, the second limiting rod and the annular sliding groove can be released, and the screen can be taken out for replacement or cleaning.

[0004] In the above technical solution, since the screen is cylindrical, all solid impurities after screening remain inside the screen. Therefore, the screening machine needs to be disassembled and the impurities in the screen need to be cleaned out. Since the impurities cannot be discharged by themselves, and in order to ensure screening efficiency, the screen cannot retain too many impurities. Thus, the screen needs to be disassembled and cleaned frequently, and the overall cleaning process is quite troublesome, making it inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to provide a screening machine for raw materials used in the production of foam fire extinguishing agents in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A screening machine for raw materials in foam fire extinguishing agent production includes a cylinder, a feed pipe fixedly connected to the top of the cylinder, a screening mechanism inside the cylinder, and a scraping and discharging mechanism on the screening mechanism. The scraping and discharging mechanism includes a rotating seat, which is rotatably mounted on the top of the screening mechanism. An arc-shaped scraper and a connecting rod are fixedly connected to the side wall of the rotating seat. The arc-shaped scraper is in contact with the top of the screening mechanism. A discharge block is fixedly connected to the end of the connecting rod away from the rotating seat. The discharge block has an inclined surface in the vertical direction. An impurity guide ring is fixedly connected to the inner wall of the cylinder. The impurity guide ring has an L-shaped cross-section. An annular groove is formed between the inner wall of the cylinder and the impurity guide ring. The discharge block is located in the groove. A slag discharge port is opened on the side wall of the cylinder, and the position of the slag discharge port corresponds to the impurity guide ring. A power mechanism for driving the rotating seat to rotate is provided at the top of the cylinder.

[0008] Preferably, the screening mechanism includes a support ring, which is fixedly connected to the inner wall of the impurity guide ring. Multiple circumferentially distributed ribs are fixedly connected to the inner wall of the support ring, and fan-shaped screens are fixedly connected between the ribs. A connecting seat is fixedly connected to one end of the ribs near the center of the support ring, and a rotating seat is rotatably connected to the top of the connecting seat.

[0009] Preferably, the height of the connecting seat is higher than the height of the support ring.

[0010] Preferably, the power mechanism includes a bracket, which is fixedly connected to the top of the cylinder. A motor is fixedly connected to the bracket, and a drive gear is fixedly connected to the output shaft of the motor. The drive gear meshes with a driven gear, and a rotating shaft is fixedly connected to the bottom of the driven gear. The rotating shaft extends into the cylinder and is fixedly connected to a rotating seat. The rotating shaft is rotatably connected to the top wall of the cylinder.

[0011] Preferably, one end of the feed pipe extends into the inside of the cylinder and is fixedly connected to a flow divider ring. The inside of the flow divider ring is hollow. Multiple circumferentially distributed discharge pipes are fixedly connected to the bottom of the flow divider ring. The flow divider ring is connected to the feed pipe and the discharge pipe respectively. A support rod is fixedly connected to the top of the flow divider ring, and the top of the support rod is fixedly connected to the top wall of the cylinder.

[0012] Preferably, two guide rails are fixedly connected to the outer wall of the cylinder, and an impurity box is slidably inserted into the guide rails, with the impurity box located below the slag discharge port.

[0013] The beneficial effects are as follows: the rotating seat drives the arc-shaped scraper to move in a circular motion, and the arc-shaped scraper scrapes the impurities on the screening mechanism into the impurity guide ring. The rotating seat drives the discharge block to move in a circular motion in the impurity guide ring through the connecting rod. The discharge block pushes the impurities to move in the impurity guide ring. When the discharge block moves to the slag discharge port, the impurities are discharged through the slag discharge port. In this way, the impurities are automatically discharged, so there is no need to frequently clean the screen, reducing the frequency of disassembly and assembly, and making it more convenient to use.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a perspective view of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0017] Figure 2 This is a three-dimensional view of the internal structure of the cylinder of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0018] Figure 3 This is a perspective view of the screening mechanism and scraping and discharging mechanism of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0019] Figure 4 This is a perspective view of the scraping and discharging mechanism of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0020] Figure 5 This is a perspective view of the screening mechanism of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0021] Figure 6 This is a front sectional view of a foam fire extinguishing agent production raw material screening machine as described in this utility model;

[0022] Figure 7 This is a three-dimensional view of the flow divider ring and discharge pipe of the foam fire extinguishing agent production raw material screening machine described in this utility model.

[0023] The reference numerals in the attached drawings are explained as follows: 1. Cylinder; 101. Feed pipe; 102. Diverting ring; 103. Discharge pipe; 104. Support rod; 105. Slag discharge port; 106. Guide rail; 107. Impurity box; 2. Screening mechanism; 201. Support ring; 202. Rib; 203. Screen; 204. Connecting seat; 3. Scraping and discharging mechanism; 301. Rotating seat; 302. Arc-shaped scraper; 303. Connecting rod; 304. Discharge block; 305. Impurity guide ring; 4. Power mechanism; 401. Support; 402. Motor; 403. Drive gear; 404. Driven gear; 405. Rotating shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-7As shown, a foam extinguishing agent production raw material screening machine includes a cylinder 1, with a feed pipe 101 fixedly connected to the top of the cylinder 1 and a discharge port at the bottom of the cylinder 1 for discharging the screened extinguishing agent. A screening mechanism 2 is installed inside the cylinder 1, and a scraping and discharging mechanism 3 is installed on the screening mechanism 2. The scraping and discharging mechanism 3 includes a rotating seat 301, which is rotatably mounted on the top of the screening mechanism 2. An arc-shaped scraper 302 and a connecting rod 303 are fixedly connected to the side wall of the rotating seat 301. The arc-shaped scraper 302 is connected to the screening mechanism 2. The top is fitted together, and the rotating seat 301 drives the arc-shaped scraper 302 to perform a circular motion. The arc-shaped scraper 302 scrapes away impurities on the screening mechanism 2, and the shape of the arc-shaped scraper 302 can scrape the impurities towards the edge of the screening mechanism 2, thereby preventing impurities from staying on the screening mechanism 2 and ensuring the screening effect and efficiency of the screening mechanism 2. The end of the connecting rod 303 away from the rotating seat 301 is fixedly connected to the discharge block 304. The discharge block 304 has an inclined surface in the vertical direction and is fixed on the inner wall of the cylinder 1. A contaminant guide ring 305 is connected, with an L-shaped cross-section. An annular groove is formed between the inner wall of the cylinder 1 and the contaminant guide ring 305. The discharge block 304 is located in the groove. The impurities scraped by the arc-shaped scraper 302 eventually enter the groove, i.e., the contaminant guide ring 305. The discharge block 304 moves in a circular motion to push the impurities. A slag discharge port 105 is opened on the side wall of the cylinder 1, and the position of the slag discharge port 105 corresponds to that of the contaminant guide ring 305. The inclined surface of the discharge block 304 can cause the impurities to flow towards the cylinder. Impurities accumulate on the inner wall. When the discharge block 304 moves to the slag discharge port 105, the impurities are discharged through the slag discharge port 105, realizing automatic discharge of impurities. Two guide rails 106 are fixedly connected to the outer wall of the cylinder 1. An impurity box 107 is slidably inserted into the guide rails 106. The impurity box 107 is located below the slag discharge port 105. After the impurities are discharged from the slag discharge port 105, they fall into the impurity box 107. The impurity box 107 can be pulled out from the guide rails 106 to clean the impurities. This makes it convenient to collect and clean the impurities, making it more convenient to use.

[0028] The screening mechanism 2 includes a support ring 201, which is connected to the inner wall of the impurity guide ring 305 by screws. Multiple circumferentially distributed ribs 202 are welded to the inner wall of the support ring 201. A fan-shaped screen 203 is connected between the ribs 202 by screws. A connecting seat 204 is welded to one end of the ribs 202 near the center of the support ring 201. The multiple ribs 202 support the screen 203 and improve the overall strength of the screening mechanism 2. The rotating seat 301 is rotatably connected to the top of the connecting seat 204. The height of the connecting seat 204 is higher than the height of the support ring 201, so that the screening mechanism 2 is conical in shape, that is, the ribs 202 and the screen 203 are inclined, which facilitates the movement of impurities from the screen 203 to the edge.

[0029] The top of the cylinder 1 is provided with a power mechanism 4 for driving the rotating seat 301 to rotate. The power mechanism 4 includes a bracket 401, which is connected to the top of the cylinder 1 by screws. A motor 402 is connected to the bracket 401 by bolts. The output shaft of the motor 402 is fixedly connected to a drive gear 403. The drive gear 403 meshes with a driven gear 404. A rotating shaft 405 is fixedly connected to the bottom of the driven gear 404. The rotating shaft 405 extends into the cylinder 1 and is fixedly connected to the rotating seat 301. The rotating shaft 405 is connected to the top wall of the cylinder 1 by a bearing.

[0030] One end of the feed pipe 101 extends into the inside of the cylinder 1 and is fixedly connected to a flow divider ring 102. The flow divider ring 102 is located around the rotating shaft 405. The inside of the flow divider ring 102 is hollow. Multiple circumferentially distributed discharge pipes 103 are fixedly connected to the bottom of the flow divider ring 102. The extinguishing agent enters the flow divider ring 102 through the feed pipe 101, and then the extinguishing agent can flow evenly onto the screening mechanism 2 through the multiple discharge pipes 103. The flow divider ring 102 is connected to the feed pipe 101 and the discharge pipes 103 respectively. A support rod 104 is fixedly connected to the top of the flow divider ring 102, and the top end of the support rod 104 is fixedly connected to the top wall of the cylinder 1.

[0031] Working principle: During use, the extinguishing agent is introduced into the feed pipe 101, enters the distribution ring 102 through the feed pipe 101, and then flows out from multiple discharge pipes 103. The extinguishing agent falls onto the screen 203 for sieving, and impurities remain on the screen 203. The sieving extinguishing agent is discharged from the bottom of the cylinder 1. When cleaning the impurities on the screen 203, the motor 402 drives the drive gear 403 to rotate, the drive gear 403 drives the driven gear 404 to rotate, the driven gear 404 drives the rotating shaft 405 to rotate, the rotating shaft 405 drives the rotating seat 301 to rotate, and the rotating seat 301 drives the arc-shaped scraper 302 to perform circular motion. Impurities on the screen 203 are scraped off and moved towards the edge of the screen 203. Finally, the impurities are scraped into the impurity guide ring 305. While the rotating seat 301 rotates, it drives the discharge block 304 to make a circular motion through the connecting rod 303. The discharge block 304 pushes the impurities in the impurity guide ring 305 to move. When the discharge block 304 moves to the slag discharge port 105, the impurities are discharged through the slag discharge port 105 and fall into the impurity box 107. The impurity box 107 can be pulled out from the guide rail 106 to clean the collected impurities. In this way, the impurities are automatically discharged, so there is no need to frequently clean the screen 203, reducing the frequency of disassembly and assembly, and making it more convenient to use.

[0032] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A screening machine for raw materials used in the production of foam fire extinguishing agents, comprising a cylinder (1), wherein a feed pipe (101) is fixedly connected to the top of the cylinder (1), and a screening mechanism (2) is provided inside the cylinder (1), characterized in that: The screening mechanism (2) is provided with a scraping and discharging mechanism (3), which includes a rotating seat (301). The rotating seat (301) is rotatably mounted on the top of the screening mechanism (2). An arc-shaped scraper (302) and a connecting rod (303) are fixedly connected to the side wall of the rotating seat (301). The arc-shaped scraper (302) is in contact with the top of the screening mechanism (2). A discharge block (304) is fixedly connected to one end of the connecting rod (303) away from the rotating seat (301). The discharge block (304) is vertically oriented... The cylinder (1) has an inclined surface and an impurity guide ring (305) is fixedly connected to the inner wall. The impurity guide ring (305) has an L-shaped cross section. An annular groove is formed between the inner wall of the cylinder (1) and the impurity guide ring (305). The discharge block (304) is located in the groove. A slag discharge port (105) is provided on the side wall of the cylinder (1). The position of the slag discharge port (105) corresponds to the impurity guide ring (305). A power mechanism (4) for driving the rotating seat (301) to rotate is provided at the top of the cylinder (1).

2. The foam fire extinguishing agent production raw material screening machine according to claim 1, characterized in that: The screening mechanism (2) includes a support ring (201), which is fixedly connected to the inner wall of the impurity guide ring (305). Multiple circumferentially distributed ribs (202) are fixedly connected to the inner wall of the support ring (201). A fan-shaped screen (203) is fixedly connected between the ribs (202). A connecting seat (204) is fixedly connected to one end of the rib (202) near the center of the support ring (201). The rotating seat (301) is rotatably connected to the top of the connecting seat (204).

3. A foam fire extinguishing agent production raw material screening machine according to claim 2, characterized in that: The height of the connecting seat (204) is higher than the height of the support ring (201).

4. A foam fire extinguishing agent production raw material screening machine according to claim 1, characterized in that: The power mechanism (4) includes a bracket (401), which is fixedly connected to the top of the cylinder (1). A motor (402) is fixedly connected to the bracket (401). A drive gear (403) is fixedly connected to the output shaft of the motor (402). The drive gear (403) meshes with a driven gear (404). A rotating shaft (405) is fixedly connected to the bottom of the driven gear (404). The rotating shaft (405) extends into the cylinder (1) and is fixedly connected to the rotating seat (301). The rotating shaft (405) is rotatably connected to the top wall of the cylinder (1).

5. A screening machine for raw materials in the production of foam fire extinguishing agents according to claim 1, characterized in that: One end of the feed pipe (101) extends into the interior of the cylinder (1) and is fixedly connected to a flow divider ring (102). The interior of the flow divider ring (102) is hollow. Multiple circumferentially distributed discharge pipes (103) are fixedly connected to the bottom of the flow divider ring (102). The flow divider ring (102) is connected to the feed pipe (101) and the discharge pipes (103) respectively. A support rod (104) is fixedly connected to the top of the flow divider ring (102). The top end of the support rod (104) is fixedly connected to the top wall of the cylinder (1).

6. A foam fire extinguishing agent production raw material screening machine according to claim 1, characterized in that: Two guide rails (106) are fixedly connected to the outer wall of the cylinder (1). An impurity box (107) is slidably inserted into the guide rail (106) and the impurity box (107) is located below the slag discharge port (105).

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