Sand screening device for constructional engineering

Abstract

The utility model belongs to the technical field of sand screening, and particularly relates to a sand screening device for constructional engineering, which comprises a mounting frame, a rotary drum rotationally connected in the mounting frame, a plurality of mounting frames mounted on the outer side of the rotary drum and a plurality of screens detachably connected in the mounting frames. The mounting frames are uniformly distributed on the periphery of the rotary drum, inserting grooves matched with the screen cloth are inwards formed in the ends, away from the rotary drum, of the mounting frames, limiting rods are slidably connected to one sides of the mounting frames, and extension springs used for connecting the limiting rods and the mounting frames are arranged on the outer walls of the limiting rods; limiting holes matched with the limiting rods are symmetrically formed in the two sides of the mounting frame. By arranging the rotating drum, the mounting frame, the limiting rod, the extension spring and other assemblies, the screen mesh can be conveniently mounted and dismounted, different types of screen meshes can be conveniently switched in the sand screening process, the previous screen mesh does not need to be dismounted for mounting other screen meshes, use is convenient, and the sand screening efficiency is improved.

Description

Technical Field

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

[0002] The classification of sand is mainly based on the particle size of sand particles, which can be roughly divided into fine sand, medium sand and coarse sand. Fine sand is mainly used in mortar, medium sand is mainly used for wall construction and plastering, and coarse sand is mainly used for flooring. A large number of sand screening operations are often required in construction projects to obtain sand with different particles. Construction projects usually use sand screening devices when screening sand. The screens on commonly used sand screening machines are generally fixed with bolts. When other types of screens are needed during use, the screens on the sand screening machine need to be removed and replaced. The process of replacing the screen will consume a lot of time, which is not only troublesome to operate, but also affects the efficiency of sand screening. Utility Model Content

[0003] In view of the above problems, the purpose of the present utility model is to provide a sand screening device for construction engineering to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a sand screening device for construction engineering, comprising a mounting frame, a rotating drum rotatably connected to the mounting frame, a mounting frame installed on the outside of the rotating drum, and a screen detachably connected to the inside of the mounting frame, wherein the number of mounting frames arranged on the outside of the rotating drum is multiple and evenly distributed on the outer circumference of the rotating drum, a slot matching the screen is provided inwardly at one end of the mounting frame away from the rotating drum, a limit rod is symmetrically slidably connected to one side of the mounting frame, a tension spring for connecting the limit rod and the mounting frame is provided on the outer wall of the limit rod, and limit holes matching the limit rod are symmetrically provided on both sides of the mounting frame.

[0005] The beneficial effects of the utility model are as follows: by arranging components such as the mounting frame, the rotating drum, the mounting frame, the limiting rod and the tension spring, not only is it convenient to install and disassemble the screen, but it is also convenient to switch between different types of screens during the sand screening process, without the need to dismantle the previous screen to install other screens, which is easy to use and improves the efficiency of sand screening.

[0006] To facilitate the installation of the screen:

[0007] As a further improvement of the above technical solution: fastening bolts for fixing the screen are symmetrically arranged on one side of the installation frame away from the rotating drum, and screw holes matching the fastening bolts are symmetrically opened on both sides of the screen.

[0008] The beneficial effect of this improvement is that when installing the screen, the screen is inserted into the installation frame along the slot, and then the fastening bolts are screwed into the screw holes to fix the screen.

[0009] In order to improve the firmness between the screen and the mounting frame:

[0010] As a further improvement of the above technical solution: the limiting hole extends to the inside of the screen away from the side of the mounting frame, and the limiting hole is opened between the rotating drum and the fastening bolt.

[0011] The beneficial effect of this improvement is that when fixing the screen to be used, the screen is rotated to the limit rod through the rotating drum, and under the elastic action of the tension spring, the limit rod is inserted into the limit hole to position the installation frame. At the same time, limit holes are also opened on the side walls of the screen, and the limit rod is inserted into the interior of the screen, which can also improve the firmness between the screen and the installation frame.

[0012] To facilitate the switching of screens with different mesh diameters during sand screening:

[0013] As a further improvement of the above technical solution: the mesh diameters of the screens installed on each of the installation frames are different.

[0014] The beneficial effect of this improvement is that by setting screens with different mesh diameters, it is possible to switch them at will during the sand screening process without having to remove the previous screen and replace it with other screens, which is convenient for use.

[0015] To mix the sifted sand with the unsifted sand again:

[0016] As a further improvement of the above technical solution: a sand guide plate is arranged at the bottom of the mounting frame, and an inclined slope is arranged on the top of the sand guide plate, and the height of the slope gradually decreases from the side close to the limiting rod to the side far from the limiting rod.

[0017] The beneficial effect of this improvement is that when screening sand, the screened sand passes through the screen and falls onto the sand guide plate, and slides along the slope of the sand guide plate to the other side of the sand pile, so as to prevent the screened sand and the unscreened sand from mixing again.

[0018] To facilitate automatic drum rotation when switching screens:

[0019] As a further improvement of the above technical solution: a rotating shaft is arranged at one end of the rotating drum, and the outer end of the rotating shaft passes through the outside of the mounting frame and is equipped with a motor.

[0020] The beneficial effect of this improvement is that when switching the screen, the motor is turned on to drive the rotating shaft and the rotating drum to rotate, thereby driving each installation frame and the screen to rotate until the screen to be used rotates between the two limit rods.

[0021] In order to facilitate the collection of the screened sand and gravel impurities to avoid mixing them with the sand:

[0022] As a further improvement of the above technical solution: a sand receiving frame is arranged on one side of the mounting frame close to the limiting rod, plug plates are symmetrically arranged at both ends of the sand receiving frame, and blocks for supporting the plug plates are symmetrically arranged on both sides of the mounting frame, and a socket is opened in the middle of the block.

[0023] The beneficial effect of this improvement is that when screening sand, sand and gravel and large-grain impurities mixed in the sand slide along the screen into the sand receiving frame for collection, so as to avoid mixing with the sand and affecting the efficiency of sand screening.

[0024] In order to speed up the screening of sand and reduce the chance of clogging of the mesh holes on the screen:

[0025] As a further improvement of the above technical solution: support legs are provided at the four corners of the bottom of the mounting frame, the lower part of the support leg is slidably connected to a base with a buffer cavity inside, a buffer spring is provided on the outer wall of the support leg and between the mounting frame and the base, and a rubber limit block is provided at the bottom end of the support leg.

[0026] The beneficial effect of this improvement is that during the sand screening process, when sand is thrown onto the screen, the entire mounting frame is acted upon by the gravity of the sand to drive the supporting legs to move downward along the buffer cavity, and squeeze the buffer spring, and under the elastic action of the buffer spring, the mounting frame vibrates up and down, thereby speeding up the sand screening speed of the screen and reducing the chance of clogging of the mesh holes on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a side view stereoscopic structural schematic diagram of the utility model;

[0028] Figure 2 It is a right view structural schematic diagram of the utility model;

[0029] Figure 3 It is a schematic diagram of the front view of the cross-sectional structure of the utility model;

[0030] Figure 4 It is a front view cross-sectional structural schematic diagram of the utility model.

[0031] In the figure: 1. mounting frame; 2. rotating drum; 3. mounting frame; 4. screen; 5. slot; 6. limit rod; 7. tension spring; 8. limit hole; 9. fastening bolt; 10. screw hole; 11. sand guide plate; 12. slope; 13. rotating shaft; 14. motor; 15. sand receiving frame; 16. plug plate; 17. building block; 18. socket; 19. supporting leg; 20. buffer chamber; 21. base; 22. buffer spring; 23. rubber limit block. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0033] like Figure 1-4As shown, a sand screening device for construction engineering comprises a mounting frame 1, a rotating drum 2 rotatably connected to the inside of the mounting frame 1, a mounting frame 3 installed on the outside of the rotating drum 2, and a screen 4 detachably connected to the inside of the mounting frame 3. The number of mounting frames 3 arranged on the outside of the rotating drum 2 is multiple and evenly distributed on the outer periphery of the rotating drum 2. A slot 5 adapted to the screen 4 is provided inwardly at one end of the mounting frame 3 away from the rotating drum 2. A limiting rod 6 is symmetrically slidably connected to one side of the mounting frame 1. A tension spring 7 for connecting the limiting rod 6 and the mounting frame 1 is provided on the outer wall of the limiting rod 6. Limiting holes 8 adapted to the limiting rod 6 are symmetrically provided on both sides of the mounting frame 3. By arranging the mounting frame 1, the rotating drum 2, the mounting frame 3, the limiting rod 6 and the tension spring 7, etc. The assembly is not only convenient for installing and disassembling the screen 4, but also convenient for switching different types of screens 4 during the sand screening process. There is no need to remove the previous screen 4 to install other screens 4, which is easy to use and improves the efficiency of sand screening. The side of the installation frame 3 away from the drum 2 is symmetrically provided with fastening bolts 9 for fixing the screen 4, and the two sides of the screen 4 are symmetrically provided with screw holes 10 adapted to the fastening bolts 9. When installing the screen 4, the screen 4 is inserted into the installation frame 3 along the slot 5, and then the fastening bolts 9 are screwed into the screw holes 10 to fix the screen 4. The limiting hole 8 extends to the inside of the screen 4 away from the side of the mounting frame 1, and the limiting hole 8 is opened between the drum 2 and the fastening bolt 9. When fixing, the screen 4 is rotated to the limiting rod 6 by the rotating drum 2. Under the elastic action of the tension spring 7, the limiting rod 6 is inserted into the limiting hole 8 to position the installation frame 3. At the same time, the side wall of the screen 4 is also provided with a limiting hole 8. The limiting rod 6 is inserted into the inside of the screen 4, and the firmness between the screen 4 and the installation frame 3 can be improved. The mesh diameters of the screens 4 installed on each of the installation frames 3 are different. By setting the screens 4 with different mesh diameters, it is convenient to switch at will during the sand screening process. There is no need to disassemble the previous screen 4 to replace other screens 4, which is convenient for use. A sand guide plate 11 is provided at the bottom of the installation frame 1, and an inclined slope 12 is provided on the top of the sand guide plate 11. The height of the slope 12 is close to One side of the limit rod 6 is gradually lowered to the side away from the limit rod 6. When screening sand, the screened sand passes through the screen 4 and falls onto the sand guide plate 11, and slides along the slope 12 on the sand guide plate 11 to the other side of the sand pile to prevent the screened sand and the unscreened sand from being mixed again. A rotating shaft 13 is provided at one end of the rotating drum 2, and the outer end of the rotating shaft 13 penetrates to the outside of the mounting frame 1 and is equipped with a motor 14. When switching the screen 4, the motor 14 is turned on to drive the rotating shaft 13 and the rotating drum 2 to rotate, thereby driving each mounting frame 3 and the screen 4 to rotate until the screen 4 to be used rotates between the two limit rods 6. A sand receiving frame 15 is provided on the side of the mounting frame 1 close to the limit rod 6, and plug plates 16 are symmetrically provided at both ends of the sand receiving frame 15.The mounting frame 1 is symmetrically provided with blocks 17 for supporting the plug plate 16 on both sides, and a socket 18 is provided in the middle of the block 17. When screening sand, sand and gravel mixed in the sand and large particles of impurities slide along the screen 4 into the sand receiving frame 15 for collection to prevent them from mixing with the sand and affecting the efficiency of screening sand. Support legs 19 are provided at the four corners of the bottom of the mounting frame 1. The lower part of the support leg 19 is slidably connected to a base 21 with a buffer chamber 20 inside. The support leg 19 is A buffer spring 22 is arranged on the outer wall and between the mounting frame 1 and the base 21, and a rubber stopper 23 is arranged at the bottom end of the support leg 19. During the sand screening process, when the sand is thrown onto the screen 4, the entire mounting frame 1 is acted upon by the gravity of the sand and drives the support leg 19 to move downward along the buffer cavity 20, and squeezes the buffer spring 22, and the mounting frame 1 vibrates up and down under the elastic action of the buffer spring 22, thereby accelerating the sand screening speed of the screen 4 and reducing the probability of the mesh holes on the screen 4 being blocked.

[0034] The working principle and use process of the utility model are as follows: when in use, first select the appropriate type of screen 4 according to the needs, turn on the motor 14, so that it drives the rotating shaft 13 and the rotating drum 2 to rotate, thereby driving each installation frame 3 and the screen 4 to rotate, until the screen 4 to be used is rotated between the two limit rods 6, and at the same time, the limit rod 6 is pulled outward along the installation frame 1, and the tension is stretched. When the limit holes 8 on both sides of the installation frame 3 are aligned with the limit rod 6, under the elastic action of the tension spring 7, the limit rod 6 is inserted into the limit hole 8 to position the installation frame 3, and then the device is moved to the bottom of the sand conveyor belt or next to the sand pile to be screened, so that the screen 4 to be used faces the sand pile. When screening sand, When sand is thrown onto the screen 4, the entire mounting frame 1 is acted upon by the gravity of the sand to drive the supporting legs 19 to move downward along the buffer chamber 20, and squeeze the buffer spring 22. Under the elastic action of the buffer spring 22, the mounting frame 1 vibrates up and down, thereby accelerating the speed at which the screen 4 screens sand and reducing the probability of clogging of the mesh holes on the screen 4. The screened sand passes through the screen 4 and falls onto the sand guide plate 11, and slides along the slope 12 on the sand guide plate 11 to the other side of the sand pile to prevent the screened sand and the unscreened sand from being mixed again. At the same time, the sand and gravel and large particles of impurities mixed in the sand slide along the screen 4 to the sand receiving frame 15 for collection, so as to prevent them from mixing with the sand and affecting the efficiency of sand screening.

[0035] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A sand screening device for construction engineering, comprising a mounting frame (1), a rotating drum (2) rotatably connected to the mounting frame (1), a mounting frame (3) mounted on the outside of the rotating drum (2), and a screen (4) detachably connected to the inside of the mounting frame (3), characterized in that: The number of the mounting frames (3) arranged outside the rotating drum (2) is multiple and evenly distributed on the outer circumference of the rotating drum (2); a slot (5) adapted to the screen (4) is provided inwardly at one end of the mounting frame (3) away from the rotating drum (2); a limit rod (6) is symmetrically slidably connected to one side of the mounting frame (1); a tension spring (7) for connecting the limit rod (6) and the mounting frame (1) is provided on the outer wall of the limit rod (6); and limit holes (8) adapted to the limit rod (6) are symmetrically provided on both sides of the mounting frame (3).

2. A sand screening device for construction engineering according to claim 1, characterized in that: The side of the installation frame (3) away from the rotating drum (2) is symmetrically provided with fastening bolts (9) for fixing the screen (4), and the two sides of the screen (4) are symmetrically provided with screw holes (10) adapted to the fastening bolts (9).

3. A sand screening device for construction engineering according to claim 1, characterized in that: The limiting hole (8) extends from one side of the mounting frame (1) to the inside of the screen (4), and the limiting hole (8) is provided between the rotating drum (2) and the fastening bolt (9).

4. A sand screening device for construction engineering according to claim 1, characterized in that: The mesh diameters of the screens (4) installed on each of the installation frames (3) are different.

5. The sand screening device for construction engineering according to claim 1, characterized in that: A sand guide plate (11) is provided at the bottom of the mounting frame (1), and an inclined slope (12) is provided at the top of the sand guide plate (11), wherein the height of the slope (12) gradually decreases from a side close to the limiting rod (6) to a side far from the limiting rod (6).

6. A sand screening device for construction engineering according to claim 1, characterized in that: A rotating shaft (13) is provided at one end of the rotating drum (2), and the outer end of the rotating shaft (13) penetrates the outside of the mounting frame (1) and is provided with a motor (14).

7. A sand screening device for construction engineering according to claim 1, characterized in that: A sand receiving frame (15) is arranged on one side of the mounting frame (1) close to the limiting rod (6), plug plates (16) are symmetrically arranged at both ends of the sand receiving frame (15), and blocks (17) for supporting the plug plates (16) are symmetrically arranged on both sides of the mounting frame (1), and a socket (18) is opened in the middle of the block (17).

8. The sand screening device for construction engineering according to claim 1, characterized in that: Support legs (19) are provided at the four corners of the bottom of the mounting frame (1); the lower part of the support leg (19) is slidably connected to a base (21) having a buffer cavity (20) therein; a buffer spring (22) is provided on the outer wall of the support leg (19) and between the mounting frame (1) and the base (21); and a rubber limit block (23) is provided at the bottom end of the support leg (19).

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