CN220635294U - Raw material screening device - Google Patents

Abstract

The utility model discloses a raw material screening device, in particular to the technical field of raw material screening, which comprises a screening box, wherein a first filter screen is arranged in the screening box, and a dust collection mechanism for cleaning dust generated during screening is arranged at the top end of the screening box; the dust collection mechanism comprises a dust collection box arranged at the left end of the screening box, a plurality of first air inlet pipes are fixedly communicated with the left side of the top end of the screening box, a plurality of first air inlet pipes are fixedly communicated with the same second air inlet pipe, a third air inlet pipe is fixedly communicated with the bottom end of the second air inlet pipe, an air suction pump is arranged at the top end of the dust collection box, and an air suction inlet of the air suction pump is fixedly communicated with the bottom end of the third air inlet pipe. The utility model not only can clean dust and reduce harm to staff, but also can crush and convey large-particle concrete and reduce labor intensity of staff.

Description

A raw material screening device

Technical field

The utility model relates to the technical field of raw material screening, in particular to a raw material screening device.

Background technique

Concrete, referred to as concrete, is a general term for engineering composite materials that are made of cementing materials that bind aggregates into a whole. The term concrete usually refers to cement as cementing material, sand and stone as aggregates and water ( Cement concrete, which can contain admixtures and admixtures) in a certain proportion and is stirred, is also called ordinary concrete. It is widely used in civil engineering. Before using concrete, workers need to screen the raw materials through a screening device.

For example, the raw material screening device for concrete production provided in the Chinese patent application with application number 202221845772.1 includes a fixed frame with an adjustment and positioning assembly fixedly installed on the top of the fixed frame. The adjustment and positioning assembly at least includes a connecting frame, a threaded rod, and a threaded barrel. , fixed frame and connecting rod, the top of the fixed frame is provided with a connecting frame, the inner side of the fixed frame is provided with a threaded rod, the outer side of the said threaded rod is provided with a threaded barrel, the outer side of the said threaded barrel is provided with a fixing frame, the said fixed frame A connecting rod is provided on the inside of the frame, and a screening and replacement component is fixedly installed on the inside of the connecting frame. This technical solution facilitates the staff to rotate the two threaded rods synchronously by adjusting the positioning component, and reduces the difficulty for the staff to rotate the two threaded rods. This facilitates the staff to adjust and fix the angle of the connection frame, ensures the stability of the connection frame when rotating, and facilitates different staff to use the connection frame.

However, the following problems still exist in this technical solution: in this technical solution, concrete production raw materials are screened through a screen. However, the screen in this device is exposed to the external environment, and a large amount of dust is easily generated during the concrete screening process. It is harmful to the health of workers' lungs and respiratory tracts.

Utility model content

The purpose of this utility model is to provide a raw material screening device that can not only clean dust and reduce harm to workers, but also crush and transport large particles of concrete, reducing the labor intensity of workers. to address the above deficiencies in technology.

In order to achieve the above purpose, the present utility model provides the following technical solution: a raw material screening device, including a screening box, a first filter screen is provided inside the screening box, and a filter screen is provided on the top of the screening box to filter the particles generated during screening. A vacuuming mechanism for cleaning dust;

The dust suction mechanism includes a dust collecting box located at the left end of the screening box. A plurality of first air inlet pipes are fixedly connected to the left end of the top of the screening box, and the same first air inlet pipe is fixedly connected to the left end of the plurality of first air inlet pipes. Two air inlet pipes, the bottom end of the second air inlet pipe is fixedly connected to a third air inlet pipe, the top of the dust collection box is provided with an air extraction pump, the suction port of the air extraction pump is fixedly connected to the bottom end of the third air inlet pipe, the The air outlet of the air extraction pump is fixedly connected to a first air outlet pipe, and the top end of the dust box is fixedly connected to a second filter screen. The bottom end of the first air outlet pipe penetrates the second filter screen and extends to the bottom end of the dust box. , the top of the dust collecting box is fixedly connected with a second air outlet pipe, which can clean the dust generated during screening.

Preferably, a holding box is provided at the right end of the screening box, the right end of the first filter penetrates the screening box and extends to the inside of the holding box, and a crushing mechanism for crushing large particles of concrete raw materials is provided inside the holding box. ; The crushing mechanism includes two rotating shafts located inside the container. The rear end of the rotating shaft penetrates the container and extends out of the rear end of the container. The rotating shaft and the container are movably connected through bearings. The outer end of the rotating shaft is provided with Grinding roller, the rear end of the rotating shaft is provided with a gear, the two gears are meshed, and the rear end of the rotating shaft on the right is fixed with a first motor, which can crush large particles of concrete raw materials.

Preferably, the inside of the container is provided with a conveying mechanism for conveying the crushed concrete raw materials; the conveying mechanism includes a conveying tube located inside the containing box, and the top end of the conveying tube penetrates the containing box and extends out of the top of the containing box. , a spiral conveyor rod is movably connected inside the conveyor tube through a bearing. The top of the spiral conveyor rod penetrates the conveyor tube and extends out of the top of the conveyor tube. A second motor is provided on the top of the spiral conveyor rod. The left side of the top of the conveyor tube There is a discharge pipe fixedly connected, and the right end of the discharge pipe runs through the screening box and extends to the inside of the screening box, so that the crushed concrete raw materials can be transported.

Preferably, a feed pipe is fixedly connected to the top of the screening box to facilitate concrete raw materials entering the inside of the screening box.

Preferably, a first door is movably connected to the front end of the dust collecting box through a hinge, and a first handle is fixed to the front end of the first door to enable cleaning of dust inside the dust collecting box.

Preferably, a second box door is movably connected to the front end of the screening box through a hinge, and a second handle is fixed to the front end of the second box door to collect the filtered concrete raw materials.

Among the above technical solutions, the technical effects and advantages provided by this utility model are:

1. When screening concrete raw materials, start the air pump. The air pump can suck the dust inside the screening box into the first air inlet pipe through the first air inlet pipe, and finally discharge it into the dust collection box through the first air outlet pipe. , the second filter screen inside the dust collection box can filter dust, and the filtered air is discharged through the second air outlet pipe. The utility model can clean dust and reduce harm to workers;

2. Large particles of concrete raw materials enter the inside of the container, start the first motor, and the first motor can drive the rotating shaft to rotate. The rotation of the rotating shaft can drive the crushing roller to rotate. The rotation of the crushing roller can crush large particles of concrete;

3. When the crushed concrete needs to be transported, start the second motor. The second motor can drive the screw conveyor rod to rotate. The screw conveyor rod can be used to transport the crushed concrete and discharge it into the screening box through the discharge pipe. , and perform screening again. The utility model can transport the crushed concrete and reduce the labor intensity of workers.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only used in the present utility model. For some of the embodiments described, those of ordinary skill in the art can also obtain other drawings based on these drawings.

Figure 1 is a front view of the utility model;

Figure 2 is a rear view of the utility model;

Figure 3 is a cross-sectional view of the screening box of the present utility model;

Figure 4 is a schematic structural diagram of the dust collection mechanism of the present utility model;

Figure 5 is a schematic structural diagram of the crushing mechanism of the present utility model;

Figure 6 is a schematic structural diagram of the conveying mechanism of the present invention.

Explanation of reference symbols:

1 screening box, 2 first filter, 3 dust collection mechanism, 301 dust collection box, 302 first air inlet pipe, 303 second air inlet pipe, 304 third air inlet pipe, 305 air pump, 306 first air outlet pipe, 307 Second filter screen, 308 second air outlet pipe, 4 holding box, 5 crushing mechanism, 501 rotating shaft, 502 crushing roller, 503 gear, 504 first motor, 6 conveying mechanism, 601 conveying cylinder, 602 screw conveying rod, 603 third Two motors, 604 discharge pipe, 7 feed pipes.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be introduced in further detail below with reference to the accompanying drawings.

The utility model provides a raw material screening device as shown in Figures 1-6, which includes a screening box 1. A first filter 2 is provided inside the screening box 1, and a pair of pairs are provided at the top of the screening box 1. A dust collection mechanism 3 for cleaning the dust generated during screening;

As shown in Figure 4, the dust collection mechanism 3 includes a dust collection box 301 located at the left end of the screening box 1. A plurality of first air inlet pipes 302 are fixedly connected to the left side of the top end of the screening box 1. The left end of the first air inlet pipe 302 is fixedly connected to the same second air inlet pipe 303, and the bottom end of the second air inlet pipe 303 is fixedly connected to a third air inlet pipe 304. The top of the dust collection box 301 is provided with an air extraction pump 305. The air suction port of the air extraction pump 305 is fixedly connected to the bottom end of the third air inlet pipe 304. The air outlet of the air extraction pump 305 is fixedly connected to the first air outlet pipe 306. The top end of the dust collection box 301 is fixedly connected to the second filter screen 307. , the bottom end of the first air outlet pipe 306 passes through the second filter screen 307 and extends to the bottom end of the dust collecting box 301. The top end of the dust collecting box 301 is fixedly connected with the second air outlet pipe 308. The front end of the dust collecting box 301 A first box door is movably connected through a hinge, and a first handle is fixed at the front end of the first box door;

Pour the concrete raw materials into the inside of the screening box 1 through the feed pipe 7. The first filter 2 inside the screening box 1 can screen the concrete raw materials. When screening the concrete raw materials, start the air pump 305 and pump out the air. The air pump 305 can suck the dust inside the screening box 1 into the first air inlet pipe 302 through the first air inlet pipe 302. The left ends of the plurality of first air inlet pipes 302 are fixedly connected to the same second air inlet pipe 303. The bottom end of the air pipe 303 is fixedly connected to a third air inlet pipe 304. Dust enters the third air inlet pipe 304. The air outlet of the air extraction pump 305 is fixedly connected to a first air outlet pipe 306. The dust is finally discharged into the dust collection box through the first air outlet pipe 306. 301, the second filter screen 307 inside the dust collection box 301 can filter dust, and the filtered air is discharged through the second air outlet pipe 308. When it is necessary to clean the dust on the second filter screen 307, open it through the first handle. The first box door can clean the dust on the second filter screen 307. The utility model can clean the dust to prevent workers from inhaling dust-laden air into their lungs, thereby reducing the harm to workers.

As shown in Figure 5, the right end of the screening box 1 is provided with a holding box 4. The right end of the first filter 2 penetrates the screening box 1 and extends to the inside of the holding box 4. The inside of the holding box 4 is provided with a large A crushing mechanism 5 for crushing granular concrete raw materials; the crushing mechanism 5 includes two rotating shafts 501 located inside the container 4. The rear end of the rotating shaft 501 penetrates the container 4 and extends out of the rear end of the container 4. The rotating shaft 501 is movably connected to the container 4 through bearings. The outer end of the rotating shaft 501 is provided with a grinding roller 502. The rear end of the rotating shaft 501 is provided with a gear 503. The two gears 503 are meshed with each other and are located on the right side. The first motor 504 is fixed at the rear end of the rotating shaft 501;

Large particles of concrete raw materials enter the inside of the container 4, and the first motor 504 is started. The first motor 504 can drive the rotating shaft 501 to rotate. A gear 503 is provided at the rear end of the rotating shaft 501. The two gears 503 are meshed, so that the two rotating shafts 501 It can rotate at the same time. The outer end of the rotating shaft 501 is provided with a crushing roller 502. The rotation of the rotating shaft 501 can drive the crushing roller 502 to rotate. The rotation of the crushing roller 502 can crush large particles of concrete.

As shown in Figure 6, a conveying mechanism 6 for conveying crushed concrete raw materials is provided inside the container 4; the conveyor mechanism 6 includes a conveyor tube 601 located inside the container 4, with the top end of the conveyor tube 601 Penetrating through the container 4 and extending out of the top of the container 4, a spiral conveyor rod 602 is movably connected inside the conveyor tube 601 through a bearing. The top of the spiral conveyor rod 602 penetrates through the conveyor tube 601 and extends out of the top of the conveyor tube 601. A second motor 603 is provided at the top of the conveyor rod 602, and a discharge pipe 604 is fixedly connected to the left side of the top of the conveyor tube 601. The right end of the discharge pipe 604 penetrates the screening box 1 and extends to the inside of the screening box 1;

When the crushed concrete needs to be transported, the second motor 603 is started. The bottom end of the second motor 603 is provided with a screw conveyor rod 602. The second motor 603 can drive the screw conveyor rod 602 to rotate, and the screw conveyor rod 602 can be used to transport the crushed concrete. The concrete is transported. The left side of the top of the conveying tube 601 is fixedly connected with a discharge pipe 604. The right end of the discharge pipe 604 penetrates the screening box 1 and extends to the inside of the screening box 1. It is discharged into the interior of the screening box 1 through the discharge pipe 604. , and screen again. The utility model can transport the crushed concrete and reduce the labor intensity of workers.

In addition, as shown in Figure 1, a feed pipe 7 is fixedly connected to the top of the screening box 1, and a second box door is movably connected to the front end of the screening box 1 through a hinge. The front end of the second box door is fixedly connected. There is a second handle. When the concrete raw materials screened out from the screening box 1 need to be taken out, the second box door can be opened through the second handle, and the concrete raw materials can be taken out.

Certain exemplary embodiments of the present invention have been described above only by way of illustration. Needless to say, those of ordinary skill in the art can use various different embodiments without departing from the spirit and scope of the present invention. Modifications to the described embodiments are made. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims (6)

1. A raw material screening device, including a screening box (1), characterized in that: a first filter screen (2) is provided inside the screening box (1), and a first filter screen (2) is provided at the top of the screening box (1). A dust suction mechanism (3) for cleaning the dust generated during screening; The dust collection mechanism (3) includes a dust collecting box (301) located at the left end of the screening box (1), and a plurality of first air inlet pipes (302) are fixedly connected to the left side of the top of the screening box (1). The left ends of the plurality of first air inlet pipes (302) are fixedly connected to the same second air inlet pipe (303), and the bottom ends of the second air inlet pipes (303) are fixedly connected to a third air inlet pipe (304). An air suction pump (305) is provided at the top of the dust box (301). The suction port of the air suction pump (305) is fixedly connected to the bottom end of the third air inlet pipe (304). The air outlet of the air suction pump (305) is fixedly connected to A first air outlet pipe (306), a second filter screen (307) is fixedly connected to the top of the dust box (301), and the bottom end of the first air outlet pipe (306) passes through the second filter screen (307) and extends To the inner bottom of the dust collecting box (301), a second air outlet pipe (308) is fixedly connected to the top of the dust collecting box (301). 2. A raw material screening device according to claim 1, characterized in that: the right end of the screening box (1) is provided with a holding box (4), and the right end of the first filter screen (2) passes through the screening box. (1) and extends to the inside of the container (4). The container (4) is equipped with a crushing mechanism (5) for crushing large particles of concrete raw materials; The crushing mechanism (5) includes two rotating shafts (501) located inside the container (4). The rear end of the rotating shaft (501) passes through the container (4) and extends out of the rear end of the container (4). The rotating shaft (501) and the container (4) are movably connected through bearings. The outer end of the rotating shaft (501) is provided with a grinding roller (502). The rear end of the rotating shaft (501) is provided with a gear (503). The gears (503) mesh with each other, and a first motor (504) is fixed at the rear end of the rotating shaft (501) on the right side. 3. A raw material screening device according to claim 2, characterized in that: a transport mechanism (6) for transporting crushed concrete raw materials is provided inside the container (4); The conveying mechanism (6) includes a conveying cylinder (601) located inside the container (4). The top of the conveyor barrel (601) penetrates the container (4) and extends out of the container (4). A spiral conveyor rod (602) is movably connected inside the barrel (601) through a bearing. The top of the spiral conveyor rod (602) penetrates the conveyor barrel (601) and extends out of the top of the conveyor barrel (601). The spiral conveyor rod (602) A second motor (603) is provided at the top, and a discharge pipe (604) is fixedly connected to the left side of the top of the conveyor tube (601). The right end of the discharge pipe (604) penetrates the screening box (1) and extends to the screen. Inside the bin (1). 4. A raw material screening device according to claim 1, characterized in that: a feed pipe (7) is fixedly connected to the top of the screening box (1). 5. A raw material screening device according to claim 1, characterized in that: the front end of the dust collecting box (301) is movably connected with a first box door through a hinge, and the front end of the first box door is fixed with a third box door. First in command. 6. A raw material screening device according to claim 1, characterized in that: the front end of the screening box (1) is movably connected with a second box door through a hinge, and the front end of the second box door is fixed with a third box door. Second in command.