CN218132468U

CN218132468U - Soil screening device

Info

Publication number: CN218132468U
Application number: CN202222353318.0U
Authority: CN
Inventors: 姜蕊; 岳宏磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2022-12-27
Anticipated expiration: 2032-09-05

Abstract

The invention provides a soil screening device which comprises a frame, a stone crusher and a drum screen, wherein the drum screen is configured to be obliquely and rotatably arranged on the frame; the inlet of the stone crusher is configured to receive coarse material output by the lower end of the drum screen, the upper end of the drum screen is configured to receive raw material output by the feed hopper, an inclined aggregate bin is arranged below the drum screen, and the aggregate bin is configured to receive fine material falling after being screened by the drum screen. According to the invention, the obliquely arranged drum screen is used as a soil screening part, so that not only can the continuous screening operation of materials be realized, but also the coarse materials can be automatically discharged from the tail end, and meanwhile, the discharged coarse materials are crushed by the stone crusher, so that the burden of the stone crusher can be greatly reduced, and the energy consumption of the whole machine is reduced.

Description

Soil screening device

Technical Field

The invention belongs to the technical field of solid material screening, and particularly relates to a soil screening device.

Background

At present, a backfill process is often adopted in the construction process to build a foundation, a roadbed and the like. However, the backfill soil needs to meet certain requirements to be used as a filler, and therefore the backfill soil needs to be treated by a soil screening device, so that stones with large volume are removed, and the construction quality of the foundation and the roadbed after backfilling is guaranteed. For example, chinese patent publication No. CN211725894U discloses an earth sieving device combined with a jaw crusher, which can utilize the power of a movable jaw to drive a sieve frame to realize the integration of crushing and earth sieving. However, such earth screening devices still have certain problems, such as: the working process of the soil screening device is to utilize a jaw crusher to crush materials and then further screen the materials by utilizing a screen frame to obtain fine materials with granularity meeting the set requirement. This means that all the material passes through the jaw crusher, which undoubtedly burdens the jaw crusher. Meanwhile, coarse materials obtained after screening cannot be automatically discharged, so that the treatment efficiency is low, and the construction progress is influenced.

Therefore, a new soil screening device needs to be developed.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a soil screening device not only utilizes the drum sieve to realize automatic sieve material and arrange the material, moreover with sieve soil and broken two links reversal, greatly reduced the handling capacity of breaker.

The invention is realized by the following steps: an earth screening device comprising a frame, a rock crusher and a trommel configured to be tiltably rotatably mounted on the frame; the inlet of the stone crusher is configured to receive coarse material output by the lower end of the drum screen, the upper end of the drum screen is configured to receive raw material output by the feed hopper, an inclined aggregate hopper is arranged below the drum screen, and the aggregate hopper is configured to receive fine material falling after being screened by the drum screen.

Further, the device also comprises a mixing barrel, a discharge hopper, a first conveying system, a second conveying system and a third conveying system;

the mixing barrel is configured to be coaxially mounted in the rotary screen, the first conveying system is configured to receive the fine material output by the collecting hopper and convey the fine material to the third conveying system, the second conveying system is configured to receive the fine material output by the outlet of the stone crusher and convey the fine material to the third conveying system, the third conveying system is configured to partially extend into the higher end of the mixing barrel, and the discharging hopper is configured to receive the mixed material output by the lower end of the higher end of the mixing barrel.

Further, the first conveying system and the second conveying system are respectively located on two sides of the rotary screen.

Further, the first conveyor system comprises a first conveyor belt, a second conveyor belt and a third conveyor belt; the second conveying system comprises a fourth conveying belt, a fifth conveying belt and a sixth conveying belt; the third conveyor system includes a seventh conveyor belt.

Furthermore, the inner wall of drum sieve is provided with a plurality of first blades, the inner wall of compounding section of thick bamboo is provided with a plurality of second blades.

Further, the feed hopper is provided with an inclined material distribution opening which is of an arc-shaped structure and is configured to extend into the top of an annular cavity between the rotary screen and the mixing barrel at the end part.

Further, the trommel is configured to be rotatably mounted by four support rollers, one or a pair of coaxially disposed support rollers being driven by a motor.

The invention has the following beneficial effects:

1. according to the invention, the obliquely arranged drum screen is used as a soil screening part, so that not only can the continuous screening operation of materials be realized, but also the coarse materials can be automatically discharged from the tail end, and meanwhile, the discharged coarse materials are crushed by the stone crusher, so that the burden of the stone crusher can be greatly reduced, and the energy consumption of the whole machine is reduced.

2. The invention can mix the crushed material as aggregate and the screened fine material to prepare the backfill material, thereby improving the strength of the backfill foundation.

3. The integrated type movable wall body is of an integrated structure, is convenient for motorized transformation, and realizes the function of flexible movement according to the change of construction sites.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention from a right rear perspective;

FIG. 2 is a perspective view of the embodiment of FIG. 1 in a right front view;

FIG. 3 is a perspective view of the embodiment of FIG. 1 shown in a left front view;

FIG. 4 is a front view of the structure of the embodiment shown in FIG. 1;

FIG. 5 isbase:Sub>A cross-sectional view of the structure taken along line A-A of FIG. 4;

fig. 6 is a schematic diagram of the operation of the embodiment shown in fig. 1.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 6, the soil sieving device comprises a frame 1, a mixing barrel 15, a discharge hopper 9, a first conveying system, a second conveying system, a third conveying system, a stone crusher 8 and a rotary screen 2.

The trommel 2 is configured to be mounted on the frame 1 for tilting rotation. Specifically, the rear end of the frame 1 is higher than the front end thereof, the supporting rollers 10 are uniformly arranged on the left side and the right side of the two ends of the frame, the outer circular surfaces of the front end and the rear end of the drum screen 2 are respectively in rolling contact with the front group of supporting rollers 10 and the rear group of supporting rollers 10, and the matching part of the drum screen 2 and the supporting rollers 10 is further provided with a limiting plate to prevent the axial displacement between the two. The inner wall of the drum screen 2 is provided with a plurality of first blades 2.1, and in the rotating process, the first blades 2.1 are used for lifting the materials to a certain height and then enabling the materials to fall down, so that more sufficient screening is realized. The axis of the supporting roller 10 forms an inclination angle of 6-10 degrees with the ground. Thus the trommel 2 is not only mounted shaftless, but its axis is also inclined at an angle of 6-10 to the ground. The shaftless installation refers to an installation form which can realize rotation without a rotating shaft, and the advantage of the shaftless installation does not influence the material inlet and outlet, thereby meeting the requirement of continuous operation in batches. One of the support rollers 10 is driven by a motor to rotate the trommel 2. Or after the two supporting rollers 10 on the same side are connected through a transmission shaft, the transmission shaft is driven by a motor. The driving method is the prior art and is not described in detail.

It will be apparent that the upper end of the trommel 2 is for feed and is arranged to receive material from the hopper 3 and the lower end is for discharge. An inclined collecting hopper 4 is fixedly arranged on the frame 1 below the rotary screen 2, and the collecting hopper 4 receives fine materials falling after being screened by the rotary screen 2 and outputs the fine materials from a discharge hole 4.1 at the lower end of the bottom. The material moves from high to low under the action of gravity and the rotating force of the drum screen 2, and screening is completed in the moving process.

The inlet of the rock crusher 8 is configured to receive coarse material output by the lower end of the trommel 2, and the rock crusher 8 may be a smaller scale crusher and may be a jaw crusher, a double roller crusher, or other type of rock crusher.

The mixing drum 15 is configured to be mounted coaxially in the trommel 2 and to form a fixed connection with the trommel 2 by means of a number of connecting rods. The lower end of the mixing cylinder 15 extends beyond the lower end of the rotary screen 2 for better discharge. The inner wall of the mixing cylinder 15 is provided with a plurality of second blades 15.1. The second blade 15.1 is lifted to a certain height and then falls down to be mixed with the materials below, so that the mixing uniformity is improved. The feed hopper 3 has an inclined distribution opening 3.1, the distribution opening 3.1 being of arcuate configuration and being configured to project end-wise into the top of the annular chamber between the trommel 2 and the mixing bowl 15. The first blade 2.1 and the second blade 15.1 are both helical blades, and the specific shapes thereof are determined according to actual needs, which are not described herein again.

The first conveyor system is arranged to receive the fines output by the collection hopper 4 and convey them to a third conveyor system, the second conveyor system is arranged to receive the fines output by the outlet of the rock breaker 8 and convey them to the third conveyor system, the third conveyor system is arranged to extend partially into the upper end of the mixing drum 15, and the discharge hopper 9 is arranged to receive the mix output by the lower end of the upper end of the mixing drum 15. Specifically, the first conveying system and the second conveying system are respectively located on both sides of the trommel 2. The first conveying system comprises a first conveying belt 6, a second conveying belt 5 and a third conveying belt 13; the second conveying system comprises a fourth conveying belt 7, a fifth conveying belt 11 and a sixth conveying belt 12; the third conveyor system comprises a seventh conveyor belt 14.

It should be noted that the conveyer belts are all self-powered, thereby realizing the conveying of the materials. As a form of arrangement of the conveyor belts, the first conveyor belt 6, the third conveyor belt 13, the fourth conveyor belt 7, the sixth conveyor belt 12, and the seventh conveyor belt 14 are horizontally disposed conveyor belts. The second conveying belt 5 and the fifth conveying belt 11 are both obliquely arranged conveying belts, and conveying baffles are arranged on the surfaces of the conveying belts, so that materials are prevented from sliding down in the oblique conveying process. The conveying belts in the invention are all the prior art, the length of the conveying belts is determined according to actual needs, and the details are not repeated here. Conveyer belt, feeder hopper 3, play hopper 9, breaker 8 all pass through support fixed mounting on frame 1, for the convenience of show structural detail, do not see its support in fig. 1 to 6.

Working principle and process of the invention

As shown in fig. 6, the soil is fed into the drum screen 2 through the hopper 3, the material gradually moves forward as the drum screen 2 rotates, and the screening is completed during the movement, the coarse material is left in the drum screen 2 and discharged from the lower end into the stone crusher 8, and the fine material leaves the drum screen 2 and falls to the first conveyor belt 6 through the collecting hopper 4, and then is transferred to the second conveyor belt 5 to be conveyed upwards, and then is transferred to the third conveyor belt 13. Meanwhile, the coarse material is processed by the stone crusher 8 to become finer secondary fine material, and falls onto the fourth conveyer belt 7, then is transferred to the fifth conveyer belt 11 to be conveyed upwards, then is transferred to the sixth conveyer belt 12, and finally both the fine material and the secondary fine material are transferred to the seventh conveyer belt 14 to be conveyed into the mixing barrel 15 by the seventh conveyer belt. Along with the continuous rotation of mixing cylinder 15, two kinds of materials obtain comparatively abundant mixture. The secondary fine material can be crushed to about one tenth of the secondary fine material due to the crushing of large stones, but the size of partial crushed stones is still larger than that of the fine material, so that the secondary fine material can be used as aggregate to improve the strength of the backfill soil material, the secondary fine material and the aggregate are uniformly mixed, and the overall strength distribution of the foundation obtained after backfilling is more uniform.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention.

Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be interconnected between two elements.

The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A soil screening apparatus comprising a frame (1), a rock crusher (8) and a trommel (2), the trommel (2) being configured to be mounted for tilting rotation on the frame (1); characterized in that the inlet of the stone crusher (8) is configured to receive coarse material output by the lower end of the drum screen (2), the upper end of the drum screen (2) is configured to receive raw material output by the feed hopper (3), an inclined collecting hopper (4) is arranged below the drum screen (2), and the collecting hopper (4) is configured to receive fine material falling after being screened by the drum screen (2).

2. A soil screening device according to claim 1 further comprising a mixing drum (15), a discharge hopper (9), a first transport system, a second transport system and a third transport system;

the mixing cylinder (15) is configured to be coaxially mounted in the rotary screen (2), the first conveying system is configured to receive the fine material output by the collecting hopper (4) and convey the fine material to the third conveying system, the second conveying system is configured to receive the fine material output by the outlet of the stone crusher (8) and convey the fine material to the third conveying system, the third conveying system is configured to partially extend into the upper end of the mixing cylinder (15), and the discharging hopper (9) is configured to receive the mixed material output by the lower end of the upper end of the mixing cylinder (15).

3. A soil screening apparatus according to claim 2 wherein the first and second conveyor systems are located on either side of the trommel (2).

4. A soil screening device according to claim 3, wherein said first conveyor system comprises a first conveyor belt (6), a second conveyor belt (5) and a third conveyor belt (13); the second conveying system comprises a fourth conveying belt (7), a fifth conveying belt (11) and a sixth conveying belt (12); the third conveyor system comprises a seventh conveyor belt (14).

5. A soil screening device according to claim 2, wherein the inner wall of the trommel (2) is provided with a plurality of first blades (2.1) and the inner wall of the mixing barrel (15) is provided with a plurality of second blades (15.1).

6. A soil screening device according to claim 2, characterized in that the feed hopper (3) has an inclined material distribution opening (3.1), the material distribution opening (3.1) being of arcuate configuration and being configured to end into the top of the annular chamber between the trommel (2) and the mixing bowl (15).

7. A soil screening apparatus according to claim 1, wherein the trommel (2) is configured to be supported for rotational mounting by four support rollers (10), one or a pair of coaxially disposed support rollers (10) being motor driven.