Raw material screening device for foam extinguishing agent production

Abstract

The utility model discloses a raw material screening device for foam extinguishing agent production, which relates to the field of extinguishing agent production and comprises a box body, a hopper communicated with the box body is fixedly mounted at the top of the box body, a screening component is movably mounted at the upper part in the box body, and a guide plate and a stirring component are movably mounted at the lower part in the box body. The stirring assembly is located below the material guiding plate, and the material screening assembly comprises two screening plates movably hinged to the interior of the box body. The first driving motor drives the rotating shafts connected with the first driving motor to rotate, the two rotating shafts rotate synchronously through gear transmission between the two rotating shafts, the rotating discs are driven to rotate through rotation of the two rotating shafts, and then the connecting rods are driven to be located below the sieve plates to rapidly push the sieve plates to do reciprocating motion. The raw materials fall onto the sieve plate and are movably discharged towards the discharge opening in the outer side of the box body along the sieve plate after being sieved, so that the sieved raw materials can be conveniently discharged and cleaned.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing agent production, specifically to a raw material screening device for foam fire extinguishing agent production. Background Technology

[0002] Foam extinguishing agents are effective fire extinguishing agents for flammable and combustible liquids. They mainly generate a coagulated foam floating layer on the liquid surface, which has a suffocating and cooling effect. Foam extinguishing agents are classified into chemical foam, air foam, fluoroprotein foam, aqueous film-forming foam, and alcohol-resistant foam, etc. Protein foam extinguishing agents are produced from wool as raw material, with protein hydrolysates as the main component. The production process of protein foam extinguishing agents mainly involves mixing strong alkali with wool raw materials and water to cause hydrolysis. Foam extinguishing agents are effective fire extinguishing agents for flammable and combustible liquids. They mainly generate a coagulated foam floating layer on the liquid surface, which has a suffocating and extinguishing effect.

[0003] Existing raw material screening devices for foam fire extinguishing agent production, such as the one disclosed in patent number CN216631576U, use a motor to drive a cam to rotate via a rotating shaft. The cam pushes the screening plate up and down, screening two raw materials through screening holes. However, although the two screening plates can screen the raw materials, it is inconvenient to discharge and clean the raw materials on the screening plates, which is quite troublesome. In addition, the device collects the falling raw materials and sodium hydroxide through a receiving hood, and they fall together with the water coming in from the water inlet pipe, mixing together to facilitate hydrolysis. However, it cannot stir the raw materials, which can easily cause sedimentation and affect the mixing effect. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A raw material screening device for foam fire extinguishing agent production includes a housing. A hopper connected to the housing is fixedly installed on the top of the housing. A screening assembly is movably installed on the upper part of the housing. A guide plate and an agitator are movably installed on the lower part of the housing. The agitator is located below the guide plate. The screening assembly includes two screen plates movably hinged to the housing. Discharge ports corresponding to the screen plates are opened on the left and right sides of the housing. A mounting frame is fixedly installed on the rear side of the housing. Two rotating shafts located inside the housing are movably installed on the inner side of the mounting frame. Turntables are fixedly connected to the front of each of the two rotating shafts. An eccentric rod is fixedly connected to the front of each turntable. A connecting rod is movably hinged to the outside of the eccentric rod. The other end of the connecting rod is movably hinged to the bottom of the screen plate. Meshing gears are fixedly installed on the outside of the two rotating shafts. A drive motor connected to one of the rotating shafts is fixedly installed on the rear side of the mounting frame.

[0006] A further improvement of the present invention is that the agitation assembly includes two agitation shafts movably installed in the lower part of the housing. A connecting sleeve is fixedly installed on the outside of each of the two agitation shafts. An agitation rod is fixedly installed on the outside of the connecting sleeve. A synchronous pulley located outside the housing is fixedly installed on the left end of each of the two agitation shafts. A synchronous belt is movably installed on the outside of the synchronous pulley. A second drive motor connected to one of the agitation shafts is fixedly installed on the right side of the housing.

[0007] A further improvement of this utility model is that: card holders are fixedly installed on both the left and right sides of the box, a collection frame is movably engaged on the inner side of the card holder, and a handle is fixedly connected to the outer side of the collection frame.

[0008] A further improvement of this utility model is that the sieve plate is inclined to the outside and downward.

[0009] A further improvement of this utility model is that the collection frame is located below the discharge port.

[0010] A further improvement of this utility model is that a partition plate is fixedly installed in the upper part of the box body, and the partition plate is located between two sieve plates.

[0011] A further improvement of this utility model is that the connecting sleeve is located outside the two agitator shafts and is offset.

[0012] A further improvement of this utility model is that the stirring rods are fixedly connected to the outside of the connecting sleeve at equal intervals.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This utility model provides a raw material screening device for foam fire extinguishing agent production. A drive motor drives a shaft connected to it to rotate. The two shafts rotate synchronously through gear transmission. The rotation of the two shafts drives the turntable to rotate, which in turn drives the connecting rod located below the screen plate to quickly push the screen plate to reciprocate. The raw material falls onto the screen plate, is screened out, and then moves along the screen plate to the discharge port on the outside of the box for easy discharge and cleaning of the screened raw material.

[0015] This utility model provides a raw material screening device for the production of foam fire extinguishing agents. Water is added to the tank through a water injection pipe on the rear side of the tank and mixed with two raw materials. The drive motor drives the connected stirring shaft to rotate, and the synchronous pulley and synchronous belt provide transmission. The rotation of the two stirring shafts drives the stirring rod outside the connecting sleeve to rotate, thereby stirring the raw materials, avoiding sedimentation and ensuring thorough mixing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the raw material screening device for producing foam fire extinguishing agent according to the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the box body of this utility model;

[0018] Figure 3 This is a schematic diagram of the material screening assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the stirring component structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the collection frame of this utility model.

[0021] In the diagram: 1. Box body; 2. Hopper; 3. Screening assembly; 31. Screen plate; 32. Mounting frame; 33. Rotating shaft; 34. Turntable; 35. Eccentric rod; 36. Connecting rod; 37. Gear; 38. Drive motor one; 39. Card holder; 310. Collection frame; 311. Handle; 4. Guide plate; 5. Agitating assembly; 51. Agitating shaft; 52. Connecting sleeve; 53. Agitating rod; 54. Synchronous pulley; 55. Synchronous belt; 56. Drive motor two; 6. Partition plate. Detailed Implementation

[0022] The present invention will now be described in further detail:

[0023] like Figures 1 to 5 As shown, this utility model provides a raw material screening device for foam fire extinguishing agent production, including a box body 1. A hopper 2 connected to the box body 1 is fixedly installed on the top of the box body 1. A screening assembly 3 is movably installed on the upper part of the box body 1. A guide plate 4 and an agitator 5 are movably installed on the lower part of the box body 1. The agitator 5 is located below the guide plate 4. The screening assembly 3 includes two screen plates 31 movably hinged to the inside of the box body 1. Discharge ports corresponding to the screen plates 31 are opened on the left and right sides of the box body 1. The rear side of the box body 1... A mounting frame 32 is fixedly installed. Two rotating shafts 33 located inside the housing 1 are movably installed on the inner side of the mounting frame 32. A turntable 34 is fixedly connected to the front side of each of the two rotating shafts 33. An eccentric rod 35 is fixedly connected to the front side of the turntable 34. A connecting rod 36 is movably hinged to the outside of the eccentric rod 35. The other end of the connecting rod 36 is movably hinged to the bottom of the screen plate 31. Meshing gears 37 are fixedly installed on the outside of the two rotating shafts 33. A drive motor 38 connected to one of the rotating shafts 33 is fixedly installed on the rear side of the mounting frame 32.

[0024] The drive motor 38 drives the connected rotating shaft 33 to rotate. The two rotating shafts 33 are driven by the gear 37 to rotate synchronously. The rotation of the two rotating shafts 33 drives the turntable 34 to rotate, which in turn drives the connecting rod 36 to quickly push the screen plate 31 to reciprocate. After the raw material falls onto the screen plate 31 and is screened, it moves along the screen plate 31 to the discharge port on the outside of the box 1 and is discharged, which facilitates the discharge and cleaning of the screened raw material.

[0025] like Figure 4 As shown, the agitation assembly 5 includes two agitation shafts 51 movably installed inside the lower part of the housing 1. A connecting sleeve 52 is fixedly installed on the outside of each of the two agitation shafts 51. An agitation rod 53 is fixedly installed on the outside of the connecting sleeve 52. A synchronous pulley 54 located outside the housing 1 is fixedly installed on the left end of each of the two agitation shafts 51. A synchronous belt 55 is movably installed on the outside of the synchronous pulley 54. A drive motor 56 connected to one of the agitation shafts 51 is fixedly installed on the right side of the housing 1.

[0026] Water is added to the tank 1 through the water injection pipe on the rear side of the tank 1 to mix with the two raw materials. The drive motor 56 drives the agitator 51 connected to it to rotate, and the synchronous pulley 54 and synchronous belt 55 work together to drive the transmission. Thus, the rotation of the two agitator shafts 51 drives the agitator rod 53 outside the connecting sleeve 52 to rotate and agitate the raw materials, so as to avoid the raw materials from settling and ensure thorough mixing.

[0027] like Figure 5 As shown, card holders 39 are fixedly installed on both the left and right sides of the box 1. A collection frame 310 is movably attached to the inner side of the card holder 39, and a handle 311 is fixedly connected to the outer side of the collection frame 310.

[0028] The screened raw materials are received by the collection frame 310, and the collection frame 310 is removed from the holder 39 by lifting it up for easy processing.

[0029] like Figure 2 and Figure 3 As shown, the sieve plate 31 is inclined to the outside and downward.

[0030] The raw materials are screened by the outward tilting screen plate 31 and the rapid reciprocating shaking of the screen plate 31. The qualified materials fall through the screen plate 31, and the screened raw materials move to the outside of the tilting screen plate 31 as it shakes, which is convenient for collection.

[0031] like Figure 5 As shown, the collection box 310 is located below the discharge port.

[0032] The collection box 310 is located below the discharge port to facilitate the collection of raw materials.

[0033] like Figure 2As shown, a partition 6 is fixedly installed in the upper part of the box 1, and the partition 6 is located between two sieve plates 31.

[0034] The partition 6 separates the two sieve plates 31, thereby allowing the raw materials and sodium hydroxide to be added separately, which facilitates screening.

[0035] like Figure 4 As shown, the connecting sleeve 52 is located outside the two agitator shafts 51 and is offset.

[0036] The stirring rods 53 are fixedly connected to the outside of the connecting sleeve 52 at equal intervals.

[0037] The stirring rods 53, which are equidistantly installed outside the staggered connecting sleeves 52, rotate with the stirring shaft 51 to stir the raw materials, thereby avoiding the sedimentation of the raw materials and affecting the uniformity of mixing.

[0038] The working principle of the raw material screening device for foam fire extinguishing agent production will be explained in detail below.

[0039] like Figures 1 to 5 As shown, by adding the raw materials of wool and sodium hydroxide to the hoppers 2 symmetrically arranged on the top of the box 1, and opening the valves at the bottom of the hoppers 2, the raw materials of wool and sodium hydroxide fall onto two screen plates 31 separated by a partition 6. By controlling the drive motor 38 to rotate, the drive motor 38 drives the rotating shaft 33 connected to it to rotate. The two rotating shafts 33 are driven by a gear 37 to rotate synchronously. The rotation of the two rotating shafts 33 drives the turntable 34 to rotate, which in turn drives the connecting rod 36 located below the screen plate 31 to quickly push the screen plate. In the 31 activity, the raw materials fall onto the sieve plate 31 for screening and then fall down through the guide plate 4 into the bottom of the box 1. The screened raw materials are shaken by the sieve plate 31 and move towards the discharge port on the outside of the box 1 and fall into the collection frame 310 for collection. Water is added into the box 1 through the water injection pipe on the back of the box 1 to mix with the two raw materials. The drive motor 56 drives the agitator 51 connected to it to rotate, and the synchronous wheel 54 and synchronous belt 55 are used for transmission. Thus, the rotation of the two agitator shafts 51 drives the agitator rod 53 outside the connecting sleeve 52 to rotate and agitate the raw materials to ensure thorough mixing.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A raw material screening device for foam fire extinguishing agent production, comprising a housing (1), characterized in that: The top of the box (1) is fixedly installed with a hopper (2) connected to the box (1). A screening assembly (3) is movably installed in the upper part of the box (1). A guide plate (4) and an agitator (5) are movably installed in the lower part of the box (1). The agitator (5) is located below the guide plate (4). The screening assembly (3) includes two screen plates (31) that are movably hinged inside the housing (1). The left and right sides of the housing (1) are provided with discharge ports corresponding to the screen plates (31). A mounting frame (32) is fixedly installed on the rear side of the housing (1). Two rotating shafts (33) located inside the housing (1) are movably installed on the inner side of the mounting frame (32). A turntable (34) is fixedly connected to the front side of each of the two rotating shafts (33). An eccentric rod (35) is fixedly connected to the front side of the turntable (34). A connecting rod (36) is movably hinged to the outside of the eccentric rod (35). The other end of the connecting rod (36) is movably hinged to the bottom of the screen plate (31). Meshing gears (37) are fixedly installed on the outside of the two rotating shafts (33). A drive motor (38) connected to one of the rotating shafts (33) is fixedly installed on the rear side of the mounting frame (32).

2. The raw material screening device for foam fire extinguishing agent production according to claim 1, characterized in that: The agitation assembly (5) includes two agitation shafts (51) movably installed inside the lower part of the housing (1). A connecting sleeve (52) is fixedly installed on the outside of each of the two agitation shafts (51). An agitation rod (53) is fixedly installed on the outside of the connecting sleeve (52). A synchronous pulley (54) located outside the housing (1) is fixedly installed on the left end of each of the two agitation shafts (51). A synchronous belt (55) is movably installed on the outside of the synchronous pulley (54). A second drive motor (56) connected to one of the agitation shafts (51) is fixedly installed on the right side of the housing (1).

3. The raw material screening device for foam fire extinguishing agent production according to claim 1, characterized in that: Card holders (39) are fixedly installed on both the left and right sides of the box (1). A collection frame (310) is movably attached to the inner side of the card holder (39), and a handle (311) is fixedly connected to the outer side of the collection frame (310).

4. The raw material screening device for foam fire extinguishing agent production according to claim 1, characterized in that: The sieve plate (31) is inclined to the outside and downward.

5. A raw material screening device for foam fire extinguishing agent production according to claim 3, characterized in that: The collection box (310) is located below the discharge port.

6. The raw material screening device for foam fire extinguishing agent production according to claim 1, characterized in that: A partition (6) is fixedly installed in the upper part of the box (1), and the partition (6) is located between two sieve plates (31).

7. A raw material screening device for foam fire extinguishing agent production according to claim 2, characterized in that: The connecting sleeve (52) is located outside the two agitator shafts (51) and is offset.

8. A raw material screening device for foam fire extinguishing agent production according to claim 2, characterized in that: The stirring rod (53) is fixedly connected to the outside of the connecting sleeve (52) at equal intervals.

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