Sand screening machine for constructional engineering

Abstract

The utility model discloses a sand screening machine for constructional engineering, which belongs to the technical field of sand screening machines and comprises a support frame, a screening bin is fixedly mounted at the top of the support frame, a spraying mechanism for flushing gravels is arranged at the top of the screening bin, and a discharging sliding plate is arranged at the bottom of the screening bin. A water tank used for providing a water source for the spraying mechanism is arranged on the side portion of the material screening bin, and a filtering plate used for filtering gravel is installed in the material screening bin. According to the utility model, through the arrangement of the spraying mechanism, under the mutual cooperation of the spray head and the water tank, the washing of gravels in the screening bin can be realized, the adsorption effect between the gravels can be effectively reduced, the adsorption effect of scrap iron can be reduced, the adhesion of harmful substances and harmful gases in the gravels can be reduced, and the screening purity of the gravels can be improved; and therefore, the gravel screening effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand screening machine technical field, concretely is a sand screening machine for construction engineering. BACKGROUND

[0002] With the development of city, the construction of countryside, construction engineering technology is unceasing promotion, and the most main in engineering construction is concrete construction, and the main material used in concrete construction is sand, and there is a large amount of stone and particle big stone in sand, these impurities need to be filtered, so as to avoid the influence when filtering concrete. The existing equipment does not have the function of prompting the staff to clean the filtered sand after sand filtering is completed, which causes the filtered sand to continuously accumulate and block the discharge port, thereby making it inconvenient to filter the falling sand and reducing the work efficiency.

[0003] A sand screening machine for construction engineering is disclosed in Chinese patent (publication number CN219723632U), which prompts the staff to clean the sand by making the buffer plate touch the start switch and making the buzzer sound the whistle when the sand falls into the collection frame and the collection frame drives the buffer plate to move downward, thereby preventing too much sand from affecting the filtering effect. However, this patent cannot reduce the content of iron filings in sand and gravel and reduce the adsorption effect of iron filings, which can easily cause sand and gravel to be adsorbed on sandstone or between sand and gravel, increasing the diameter of the particles and reducing the screening effect. Therefore, the utility model provides a sand screening machine for construction engineering to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a sand screening machine for construction engineering to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A sand screening machine for construction engineering includes a support frame, a screening bin is fixedly installed on the top of the support frame, a spraying mechanism for washing sand and gravel is arranged on the top of the screening bin, a discharge slide plate is arranged at the bottom of the screening bin, a water tank for providing water source for the spraying mechanism is arranged on the side of the screening bin, and a filter plate for filtering sand and gravel is installed inside the screening bin. The filter plate can effectively filter large sandstone.

[0007] As a further scheme of the utility model, the spraying mechanism includes a spray head, a first rotating rod is arranged on the top of the spray head, two first tooth blocks are fixedly sleeved on the periphery of the first rotating rod, a half tooth block is engaged at the bottom of the first tooth block, and the half tooth block is fixedly installed on the top of the spray head. Under the cooperation of the first tooth block and the half tooth block, the rotation angle of the spray head can be limited.

[0008] As a further scheme of the utility model, the two ends of the first rotating rod are provided with second support plates, the inner cavities of the second support plates are provided with rotating plates, the rotating plates are fixedly sleeved with the periphery of the first rotating rod, and the second support plates are rotatably sleeved with the periphery of the first rotating rod; the rotation of the rotating plate can drive the angle adjustment of the nozzle.

[0009] As a further scheme of the utility model, the side portions of the two second support plates are fixedly connected with connecting blocks, the two connecting blocks are rotatably sleeved with the two ends of the first rotating rod, the periphery of the connecting block is fixedly connected with a side supporting rod, and the end, away from the connecting block, of the side supporting rod is fixedly installed on the outer wall of the screening bin and the supporting frame through a threaded bolt; the threaded bolt can be used for installing and fixing the side supporting rod.

[0010] As a further scheme of the utility model, the side portion of one of the connecting blocks is fixedly installed with a motor, the output shaft of the motor penetrates through the side portion of the connecting block and is fixedly connected with one end of the first rotating rod, and the motor can provide power support for the rotation of the first rotating rod under the action of the motor.

[0011] As a further scheme of the utility model, the top of the water tank is fixedly sleeved with a discharge pipe, and the end, away from the water tank, of the discharge pipe is fixedly installed on the top of the nozzle through a booster; the booster can be used for increasing the air pressure in the nozzle, thereby improving the water outlet effect.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. When the utility model is used, the spraying mechanism is arranged, the inside of the screening bin can be washed, the adsorption effect between the sand and gravel is effectively reduced, the adsorption effect of the iron scrap is reduced, the harmful substances and harmful gases in the sand and gravel are reduced, the purity of the sand and gravel screening is improved, and the screening effect of the sand and gravel is improved.

[0014] 2. When the utility model is used, the spraying mechanism is arranged, the angle of the nozzle can be adjusted through the rotation of the first rotating rod and the rotating plate under the action of the motor, the nozzle can make reciprocating arc motion back and forth due to the reversible motor, and the washing range and effect are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure front view of a sand screening machine for construction engineering.

[0016] Figure 2 It is a structure view of a spraying mechanism in a sand screening machine for construction engineering.

[0017] Figure 3 It is a sand screening machine for construction engineering in Figure 2 The structure of A in the figure is enlarged.

[0018] Figure 4 It is a bottom structure diagram of a screening bin in a sand screening machine for construction engineering.

[0019] In the figure: 1, support frame; 2, water tank; 3, screening bin; 4, filter plate; 5, discharge slide plate; 6, spray head; 7, motor; 8, discharge pipe; 9, pressure booster; 10, connecting block; 11, first rotating rod; 12, first support plate; 13, side support rod; 14, threaded bolt; 15, second support plate; 16, rotating plate; 17, first tooth block; 18, half tooth block; 19, limiting plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment one: please refer to Figure 1 - Figure 4 In the embodiments of the present application, a sand screening machine for construction engineering includes a support frame 1, a screening bin 3 is fixedly installed on the top of the support frame 1, a spraying mechanism for washing gravel is arranged on the top of the screening bin 3, a discharge slide plate 5 is arranged at the bottom of the screening bin 3, the discharge slide plate 5 is fixedly installed inside the support frame 1, and a limiting plate 19 is arranged at the bottom of the screening bin 3, the limiting plate 19 is inclinedly arranged at the bottom of the inner cavity of the screening bin 3, can control the discharging amount of sand and gravel, avoid too much sand and gravel flowing out at one time, cause impact and scattering, a water tank 2 for providing water source for the spraying mechanism is arranged at the side of the screening bin 3, a plurality of supporting legs are installed at the bottom of the water tank 2 to realize the supporting requirement of the water tank 2, and a filter plate 4 for filtering gravel is installed inside the screening bin 3.

[0022] Please refer to Figure 2 and Figure 3The spraying mechanism comprises a spray head 6, a plurality of spray holes are formed in the bottom of the spray head 6, the washing effect of sand and gravel in the cavity of the screening bin 3 can be improved, a first rotating rod 11 is arranged at the top of the spray head 6, two first tooth blocks 17 are fixedly sleeved on the periphery of the first rotating rod 11, a half tooth block 18 is engaged with the bottom of the first tooth block 17, the half tooth block 18 is fixedly installed at the top of the spray head 6, the half tooth block 18 is combined by a half circular block and a tooth block, thereby limiting the rotating angle of the spray head 6, avoiding that the overturning angle of the spray head 6 is too large, causing the water sprayed by the spray head 6 to overflow the screening bin 3, and thereby causing waste of water resources;

[0023] Please refer to Figure 3 The two ends of the first rotating rod 11 are provided with second supporting plates 15, the inner cavities of the second supporting plates 15 are provided with rotating plates 16, the rotating plates 16 are fixedly sleeved on the periphery of the first rotating rod 11, the second supporting plates 15 and the periphery of the first rotating rod 11 are rotatably sleeved, rotating square grooves are formed in the side portions of the second supporting plates 15, and the rotating plates 16 are located inside the rotating square grooves, so that the rotating plates 16 and the second supporting plates 15 can be coaxially connected, thereby saving space.

[0024] Please refer to Figure 1 - Figure 4 Based on the embodiment 1, the side portions of the two second supporting plates 15 are fixedly connected with connecting blocks 10, the two connecting blocks 10 and the two ends of the first rotating rod 11 are rotatably sleeved, the periphery of the connecting block 10 is fixedly connected with a side supporting rod 13, a circular block is fixedly connected to the side portion of the connecting block 10, the side supporting rod 13 is fixedly installed on the periphery of the circular block, one end of the side supporting rod 13 away from the connecting block 10 is fixedly installed on the outer wall of the screening bin 3 and the supporting frame 1 through a threaded bolt 14, and the first threaded bolt 14 is rotatably sleeved with the side portion of the supporting frame 1 and the side portion of the screening bin 3, thereby achieving the installation and fixation of the connecting block 10.

[0025] Please refer to Figure 1 and Figure 2 One side portion of one of the connecting blocks 10 is fixedly installed with a motor 7, the motor 7 is a reversible motor, can realize the effect of forward and reverse rotation, drives the spray head 6 to make reciprocating arc motion, can improve the washing effect and washing range of the spray head 6, and the output shaft of the motor 7 penetrates the side portion of the connecting block 10 and is fixedly connected with one end of the first rotating rod 11.

[0026] Specifically, a first supporting plate 12 is fixedly connected to the bottom of the motor 7, the first supporting plate 12 is fixedly installed on the side portion of the side supporting rod 13, a protruding plate is arranged on the bottom of the first supporting plate 12, and the first supporting plate 12 is fixedly connected with the side supporting rod 13 through a bolt screw, thereby improving the installation effect of the motor 7 and supporting the motor 7.

[0027] Please refer to Figure 1 andFigure 2 The top of the water tank 2 is fixedly sleeved with a discharge pipe 8, and a submersible pump is installed in the water tank 2, so that the water in the water tank 2 can be pumped out, and the end, away from the water tank 2, of the discharge pipe 8 is fixedly installed on the top of the spray head 6 through a pressure booster 9, the pressure booster 9 is a prior art and will not be described in detail herein, and the main function of the pressure booster 9 in the present application is to increase the gas pressure in the spray head 6, so as to improve the water outlet effect of the spray head 6 and further improve the washing effect on the sand and gravel.

[0028] The working principle of the utility model is: when the device is needed to be used to screen sand, the sand to be screened is first poured into the inner cavity of the screening bin 3, and when the sand enters the screening bin 3, it will first pass through the filter plate 4 to filter out part of the sand and gravel, but because the sand and gravel contains iron filings, it will cause part of the sand and gravel to form a ball under the action of the iron filings, thereby causing the diameter of the sand and gravel to change, which is not easy to screen, at this time, the submersible pump in the water tank 2 is driven, thereby realizing the pumping of the water in the inner cavity of the water tank 2, the pumped water can enter the inner cavity of the spray head 6 through the discharge pipe 8 and the pressure booster 9, and the pressure in the inner cavity of the spray head 6 is increased through the pressure booster 9, thereby adjusting the water outlet intensity of the spray head 6, thereby realizing the washing of the sand and gravel in the inner cavity of the screening bin 3, thereby reducing the adsorption effect of the iron filings, so as to improve the screening effect of the sand and gravel.

[0029] In the screening process, the driving motor 7 can be driven, the rotation of the output shaft of the motor 7 can drive the first rotating rod 11 to rotate, the rotation of the first rotating rod 11 can drive the rotating plate 16 to flip, and the rotation of the first rotating rod 11 can also drive the first tooth block 17 to rotate, the rotation of the first tooth block 17 can drive the half tooth block 18 to flip along the periphery of the first tooth block 17, thereby driving the spray head 6 to flip, further improving the flipping effect of the spray head 6, the spray head 6 can therefore be inclined at an angle, realizing the washing of the sand and gravel at different positions in the inner cavity of the screening bin 3, thereby improving the screening effect of the sand and gravel, because the half tooth block 18 is only half engaged with the first tooth block 17, the rotation of the spray head 6 can be limited, and because the motor 7 is a reversible motor, the motor 7 can be reversed during rotation, thereby driving the rotating plate 16 to reverse through the first rotating rod 11, and driving the first tooth block 17 and the half tooth block 18 to reverse, thereby making the spray head 6 reverse, so that the spray head 6 can repeatedly make an arc bending motion, thereby realizing the washing of different positions in the screening bin 3, reducing the adhesion between the sand and gravel, further improving the washing effect of the sand and gravel, and the larger stones after washing will remain on the top of the filter plate 4, which needs to be manually taken out, facilitating the washing and screening of more sand and gravel, the washing will reduce the adhesion of harmful substances on the sand and gravel, improve the purity of the sand and gravel, and the washed sand and gravel will be discharged from the inner cavity of the screening bin 3 through the limiting plate 19 and flow out through the discharge slide plate 5.

[0030] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A sand screening machine for construction works, comprising a support frame (1), characterized in that, The top of the support frame (1) is fixedly provided with a screening bin (3), the top of the screening bin (3) is provided with a spraying mechanism for washing sand, the bottom of the screening bin (3) is provided with a discharging slide plate (5), the side of the screening bin (3) is provided with a water tank (2) for providing water source for the spraying mechanism, and the inside of the screening bin (3) is provided with a filter plate (4) for filtering sand.

2. A sand screening machine for construction work as claimed in claim 1 wherein, The spraying mechanism comprises a spray head (6), the top of the spray head (6) is provided with a first rotating rod (11), the periphery of the first rotating rod (11) is fixedly sleeved with two first tooth blocks (17), the bottom of the first tooth block (17) is engaged with a half tooth block (18), and the half tooth block (18) is fixedly installed on the top of the spray head (6).

3. A sand screening machine for construction work as claimed in claim 2 wherein, The two ends of the first rotating rod (11) are provided with second supporting plates (15), the inner cavities of the second supporting plates (15) are provided with rotating plates (16), the rotating plates (16) are fixedly sleeved with the periphery of the first rotating rod (11), and the second supporting plates (15) and the periphery of the first rotating rod (11) are rotatably sleeved with each other.

4. A sand screening machine for construction work as claimed in claim 3 wherein, The sides of the two second supporting plates (15) are fixedly connected with connecting blocks (10), the two connecting blocks (10) and the two ends of the first rotating rod (11) are rotatably sleeved with each other, the periphery of the connecting block (10) is fixedly connected with a side supporting rod (13), and one end of the side supporting rod (13) away from the connecting block (10) is fixedly installed on the outer wall of the screening bin (3) and the support frame (1) through a threaded bolt (14).

5. A sand screening machine for construction work as claimed in claim 4 wherein, The side of one of the connecting blocks (10) is fixedly provided with a motor (7), and the output shaft of the motor (7) penetrates the side of the connecting block (10) and is fixedly connected with one end of the first rotating rod (11).

6. A sand screening machine for construction work as claimed in claim 1 wherein, The top of the water tank (2) is fixedly sleeved with a discharging pipe (8), and one end of the discharging pipe (8) away from the water tank (2) is fixedly installed on the top of the spray head (6) through a booster (9).

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