Gravel screening device

Abstract

The utility model relates to the technical field of gravel screening, and discloses a gravel screening device which comprises a rack, a drum screen and a collecting box, a driving unit is arranged on the rack, the drum screen is obliquely arranged and lapped on the driving unit, at least two screening sections are arranged on the drum screen, and the screening mesh number of each screening section is gradually increased in the output direction of the drum screen; and the collecting box is arranged below the drum screen, a plurality of collecting cavities are formed in the collecting box, and the collecting cavities are used for collecting gravel screened by different screening sections and gravel screened on the drum screen correspondingly. According to the multi-stage gravel screening device, the obliquely-arranged rotary screen is arranged, the number of screening meshes of each screening section is gradually increased in the output direction of the rotary screen, multi-stage screening can be conducted on gravel, and meanwhile large-size gravel on the screen can be directly discharged from the output end of the rotary screen; and finally, the gravel screened by the different screening sections and the gravel on the roller screen are collected through the collecting box, and the gravel screening device is simple in structure, convenient to operate and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel screening, in particular to a sand and gravel screening device. Background Art

[0002] Sand and gravel screening is the process of sorting sand and gravel by particle size using mechanical screening equipment. This process is commonly used in industries such as construction, sand and gravel processing, and mining to ensure that the required particle size meets engineering standards.

[0003] CN117772591A discloses a sand and gravel screening device and a sand and gravel screening method, comprising: a supporting platform, a supporting plate vertically arranged on the supporting platform; a horizontal drum, the horizontal drum having an open end and a closed end, the closed end being rotatably mounted on the upper part of the supporting plate, a locking member for locking the horizontal drum being detachably mounted on the supporting plate, a side wall of the horizontal drum being provided with a plurality of discharge ports arranged along the circumferential direction of the horizontal drum, screens being respectively mounted in the plurality of discharge ports, and the mesh sizes of the screens in the plurality of discharge ports being different; a support frame arranged below the horizontal drum, the support frame comprising two oppositely arranged oblique support rods and a driving roller for driving the horizontal drum to rotate forward and reverse, the lower end of the oblique support rod being connected to the supporting plate, the driving roller being rotatably mounted between the upper end of the oblique support rod and the supporting plate, and the circumferential surfaces of the two driving rollers being supported on the horizontal drum.

[0004] The above technical solution performs multi-stage screening of sand and gravel by installing screens with different mesh sizes in multiple discharge ports. However, the above technical solution cannot collect sand and gravel of different mesh sizes separately, and the sand and gravel on the screen are difficult to discharge. Utility Model Content

[0005] The purpose of this application is to solve the above-mentioned problems and provide a sand and gravel screening device. This screening device is provided with an inclined drum screen, and along the output direction of the drum screen, the screening mesh number of each screening section gradually becomes larger, so that sand and gravel can be screened in multiple stages. At the same time, large-sized sand and gravel on the screen can be directly discharged from the output end of the drum screen. Finally, the sand and gravel under the screen of different screening sections and the sand and gravel on the drum screen are collected through a collection box. It is not only simple in structure and easy to operate, but also highly efficient.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A sand and gravel screening device includes a frame, a drum screen, and a collection box. The frame is provided with a drive unit for driving the drum screen to rotate. The drum screen is arranged obliquely and overlapped on the drive unit. The drum screen is provided with at least two screening sections, and the screening mesh size of each screening section gradually increases along the output direction of the drum screen.

[0008] The collecting box is arranged below the drum screen, and a plurality of collecting cavities are provided on the collecting box, and the plurality of collecting cavities are respectively used to collect sand and gravel under the screens of different screening sections and sand and gravel on the drum screen.

[0009] Preferably, there are two screening sections, namely a first screening section and a second screening section, and the screening mesh number of the first screening section is smaller than the screening mesh number of the second screening section.

[0010] Preferably, the drum screen is provided with a plurality of baffles arranged in an array along the circumference of its inner side surface, and gaps are provided between the plurality of baffles for the sand and gravel on the screen to pass through.

[0011] Preferably, the driving unit includes driving wheels arranged on both sides of the frame, there are at least four driving wheels, and they are evenly distributed on both sides of the frame. The outer side of the drum screen is provided with a limiting portion matching the driving wheel, and the drum screen is overlapped on the driving wheel through the limiting portion.

[0012] Preferably, the outer side surface of the drum screen is provided with a plurality of convex ribs arranged along the circumferential direction, the convex ribs are arranged side by side in pairs, and gaps are provided between the convex ribs, and the gaps serve as limiting portions.

[0013] Preferably, it also includes an atomization unit, one end of the atomization unit is connected to one side of the frame, and the other end passes over the drum screen from above and is connected to the other side of the frame, and the atomization unit is connected to an external water source.

[0014] Preferably, the atomization unit includes multiple atomization pipes, and fixed plates for fixing the atomization pipes are provided on both sides of the frame. One end of the atomization pipe is connected to the fixed plate located on one side of the frame, and the other end bypasses the drum screen and is connected to the fixed plate located on the other side of the frame. The atomization pipe is provided with multiple atomization heads facing the drum screen, and the atomization pipe is connected to an external water source.

[0015] Preferably, there are three atomization pipes.

[0016] Preferably, the storage box includes a box body and at least two partitions connected to the box body, and the partitions divide the box body into a plurality of collection chambers.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The present application sets an inclined drum screen, and along the output direction of the drum screen, the screening mesh of each screening section gradually increases, so that sand and gravel can be screened in multiple stages. At the same time, large-sized sand and gravel on the screen can be directly discharged from the output end of the drum screen. Finally, the sand and gravel under the screen of different screening sections and the sand and gravel on the drum screen are collected through a collection box. It is not only simple in structure and easy to operate, but also highly efficient.

[0019] 2. The present application provides a plurality of baffles arranged in a circular array along the inner side surface of the drum screen, which can block sand and gravel to a certain extent, so that the sand and gravel can stay on the drum screen for a longer time and avoid the sand and gravel moving directly along the inclined direction of the drum screen.

[0020] 3. This application overlaps the drum screen on the driving unit and drives the drum screen to rotate by overlapping, so that the feed port and the discharge port of the drum screen are larger and the efficiency is higher.

[0021] 4. This application achieves the purpose of dust reduction by arranging an atomization unit on the frame, with one end of the atomization unit connected to one side of the frame and the other end passing over the drum screen and connected to the other side of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the sand and gravel screening device of Example 1;

[0023] Figure 2 2 is a front view of the sand and gravel screening device of Example 1;

[0024] Figure 3 This is a perspective view of the drum screen of the sand and gravel screening device of Example 1.

[0025] The reference numerals are as follows:

[0026] Frame 1; drum screen 2; collection box 3; atomizing unit 4; drive unit 11; fixing plate 12; first screening section 21; second screening section 22; baffle 23; rib 24; gap 25; box body 31; partition 32; collection chamber 33; atomizing pipe 41; drive wheel 111; atomizing head 411. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] Example 1

[0029] refer to Figures 1 to 3 A sand and gravel screening device includes a frame 1, a drum screen 2, and a collecting box 3. The frame 1 is provided with a driving unit 11 for driving the drum screen 2 to rotate. The drum screen 2 is arranged obliquely and overlapped on the driving unit 11. The drum screen 2 is provided with at least two screening sections, and the screening mesh number of each screening section gradually increases along the output direction of the drum screen 2.

[0030] The collecting box 3 is arranged below the drum screen 2 and is provided with a plurality of collecting chambers 33 . The plurality of collecting chambers 33 are respectively used to collect sand and gravel under the screens of different screening sections and sand and gravel on the screen of the drum screen 2 .

[0031] In this embodiment, two screening segments are used, namely the first screening segment 21 and the second screening segment 22; in other embodiments, three, four or five screening segments can also be used, and the operator can set them according to actual conditions and the length of the drum screen 2.

[0032] Under this design, the operator or the external feeding equipment feeds the sand and gravel into the rotating drum screen 2, and the sand and gravel will move from the inlet end to the outlet end of the drum screen 2 along the inclined direction of the drum screen 2. Because the mesh number of the first screening section 21 is smaller than the mesh number of the second screening section 22, the small-sized sand and gravel will be screened out in the first screening section 21, the medium-sized sand and gravel will be screened out in the second screening section 22, and the large-sized sand and gravel will be directly output from the output end of the drum screen 2 along the inclined direction of the drum screen 2, and the collecting box 3 can respectively collect the undersize of the first screening section 21, the undersize of the second screening section 22, and the oversize output from the output end of the drum screen 2. It is not only simple in structure and easy to operate, but also highly efficient.

[0033] Preferably, the drum screen 2 is provided with a plurality of baffles 23 arranged in an array along the circumference of the inner side surface thereof, and gaps are provided between the plurality of baffles 23 for the sand and gravel on the screen to pass through.

[0034] During the rotation of the drum screen 2, when the baffle 23 just rotates to a position where it can prevent the sand and gravel from continuing to fall along the inclined direction of the drum screen 2, the sand and gravel will be blocked by the baffle 23, so that the sand and gravel will stay on the drum screen 2 for a longer time; as the drum screen 2 continues to rotate, the sand and gravel on the screen will pass through the gap and enter the second screening section 22 from the first screening section 21 or reach the output end of the drum screen 2 from the second screening section 22.

[0035] In this embodiment, the driving unit 11 includes driving wheels 111 arranged on both sides of the frame 1. There are at least four driving wheels 111, which are evenly distributed on both sides of the frame 1. The outer side surface of the drum screen 2 is provided with a limiting portion matching the driving wheel 111, and the drum screen 2 is overlapped on the driving wheel 111 through the limiting portion.

[0036] Specifically, the driving wheel 111 is mainly used to drive the drum screen 2 to rotate, and the function of the limiting portion is to prevent the drum screen 2 from sliding off the driving wheel 111. Of course, six, eight, or more driving wheels 111 can also be used. The operator can choose the number of driving wheels 111 according to actual conditions. In the shaftless drum screen 2 disclosed in Chinese patent CN209597613U, the driving mechanism is specifically disclosed. Therefore, the driving method of the drive unit 11 of this embodiment will not be described in detail in this embodiment.

[0037] Furthermore, the outer side of the drum screen 2 is provided with a plurality of circumferentially arranged ribs 24. The ribs 24 are arranged side by side in pairs, with gaps 25 between the ribs 24, which serve as stoppers. The drive wheel 111 is embedded in the gaps 25 between the ribs 24, and the ribs 24 contact the side of the drive wheel 111 to prevent the drum screen 2 from sliding off the drive wheel 111.

[0038] In this embodiment, an atomizing unit 4 is further included, one end of the atomizing unit 4 is connected to one side of the frame 1, and the other end passes over the drum screen 2 and is connected to the other side of the frame 1, and the atomizing unit 4 is connected to an external water source.

[0039] Specifically, the dust reduction principle of the atomization unit 4 is mainly to convert water or other liquids into tiny water mist particles, thereby effectively capturing and settling dust and particulate matter during the operation of the drum screen 2.

[0040] Furthermore, the atomization unit 4 includes a plurality of atomization pipes 41, and fixed plates 12 for fixing the atomization pipes 41 are provided on both sides of the frame 1. One end of the atomization pipe 41 is connected to the fixed plate 12 located on one side of the frame 1, and the other end bypasses the drum screen 2 and is connected to the fixed plate 12 located on the other side of the frame 1. The atomization pipe 41 is provided with a plurality of atomization heads 411 facing the drum screen 2, and the atomization pipe 41 is connected to an external water source.

[0041] That is to say, the atomizing pipe 41 is arranged in an arch structure, in which the arc area can cooperate well with the surface of the drum screen 2, and the vertical area can cooperate with the falling direction of the screened material of the drum screen 2, thereby achieving a better dust reduction effect. At the same time, in this embodiment, three atomizing pipes 41 are provided, that is, completely covering the input end, middle part and output end of the drum screen 2. By converting water into smaller water mist particles, these tiny water mist particles can be suspended in the air for a longer time, increasing the chance of contact with dust particles in the air, thereby improving the capture efficiency.

[0042] In this embodiment, the collection box 3 includes a box body 31 and at least two partitions 32 connected to the box body 31. The partitions 32 divide the box body 31 into multiple collection chambers 33. The undersize material passing through the first screening section 21, the undersize material passing through the second screening section 22, and the oversize material passing through the second screening section 22 can be collected in different collection chambers 33 of the receiving wall.

[0043] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A sand and gravel screening device, comprising a frame, a drum screen, and a collecting box, characterized in that: The frame is provided with a driving unit for driving the drum screen to rotate, the drum screen is arranged obliquely and overlapped on the driving unit, the drum screen is provided with at least two screening sections, and the screening mesh number of each screening section gradually increases along the output direction of the drum screen; The collecting box is arranged below the drum screen, and a plurality of collecting cavities are provided on the collecting box, and the plurality of collecting cavities are respectively used to collect sand and gravel under the screens of different screening sections and sand and gravel on the drum screen.

2. The sand and gravel screening device according to claim 1, characterized in that: There are two screening sections, namely a first screening section and a second screening section. The screening mesh number of the first screening section is smaller than the screening mesh number of the second screening section.

3. The sand and gravel screening device according to claim 1, characterized in that: The drum screen is provided with a plurality of baffles arranged in an array along the circumference of its inner side surface, and gaps are provided between the plurality of baffles for the sand and gravel on the screen to pass through.

4. The sand and gravel screening device according to claim 1, characterized in that: The driving unit includes driving wheels arranged on both sides of the frame. There are at least four driving wheels, which are evenly distributed on both sides of the frame. The outer side of the drum screen is provided with a limiting portion matching the driving wheel, and the drum screen is overlapped on the driving wheel through the limiting portion.

5. The sand and gravel screening device according to claim 4, characterized in that: The outer side surface of the drum screen is provided with a plurality of convex ribs arranged along the circumferential direction, the convex ribs are arranged side by side in pairs, and gaps are provided between the convex ribs, and the gaps serve as the limiting portions.

6. The sand and gravel screening device according to claim 1, characterized in that: It also includes an atomization unit, one end of which is connected to one side of the frame, and the other end of which passes over the drum screen from above and is connected to the other side of the frame, and the atomization unit is connected to an external water source.

7. The sand and gravel screening device according to claim 6, characterized in that: The atomization unit includes multiple atomization pipes. Fixed plates for fixing the atomization pipes are provided on both sides of the frame. One end of the atomization pipe is connected to the fixed plate on one side of the frame, and the other end bypasses the drum screen and is connected to the fixed plate on the other side of the frame. The atomization pipe is provided with multiple atomization heads facing the drum screen, and the atomization pipe is connected to an external water source.

8. The sand and gravel screening device according to claim 7, characterized in that: There are three atomization pipes.

9. The sand and gravel screening device according to claim 1, characterized in that: The collection box includes a box body and at least two partitions connected to the box body, and the partitions divide the box body into a plurality of collection chambers.

Images