A sand screening device for construction engineering

Abstract

This utility model relates to the field of sand screening in construction engineering, and discloses a sand screening device for construction engineering, including a support frame, a protective shell on the upper part of the support frame, a screen cylinder inside the protective shell, an mounting shell on the upper part of the protective shell, a vibration mechanism inside the mounting shell, and a motor fixedly connected to the inner wall of the mounting shell. The vibration mechanism includes a vibration component and a cleaning component. In this utility model, through the combined use of the vibration mechanism and the screen cylinder, when the screen mesh is clogged, rotating the cam causes the hinge rod on the lower side of the cam to move up and down reciprocally, causing the support component to drive the rubber wheel to collide with the screen cylinder, causing the screen cylinder to vibrate and clean the sand and gravel attached to the screen mesh, preventing screen clogging and thus improving production efficiency. At the same time, when the rubber wheel collides with the screen cylinder, the rotation of the rubber wheel and the friction of the cleaning brush clean the surface of the rubber wheel, reducing wear on the rubber wheel and the screen cylinder.

Description

Technical Field

[0001] This utility model relates to the field of sand screening in construction engineering, and in particular to a sand screening device for construction engineering. Background Technology

[0002] With economic development and accelerated urbanization, a large number of construction projects have emerged. Sand, as an indispensable raw material in construction projects, is used in large quantities and has high requirements. Therefore, sand screening devices are needed to meet the needs of these projects. Existing sand screening devices include vibrating screens, shaftless drum screens, and scoop screens. For example, in a shaftless drum screen: the motor is connected to the drum device via a reducer and a coupling, driving the drum device to rotate around its axis. After the material enters the inclined drum device, under the action of rotation, the material on the screen surface tumbles and rolls. Qualified material is discharged through the discharge port at the bottom of the rear end of the drum, while unqualified material is discharged through the discharge port at the tail end of the drum.

[0003] However, when processing sand with high moisture content or strong viscosity, the existing shaftless drum sand screening device tends to cause sand to adhere to the inner wall of the drum and the screen, resulting in reduced screening efficiency and even clogging of the screen holes. This requires workers to stop the machine for cleaning, affecting normal operation and reducing work efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sand screening device for construction engineering, which aims to improve the problem mentioned in the prior art that "sand easily adheres to the screen mesh, causing blockage of the screen holes, affecting normal operation and reducing work efficiency".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sand screening device for construction engineering, comprising a support frame, a protective shell on the upper part of the support frame, a screen cylinder inside the protective shell, an mounting shell on the upper part of the protective shell, a vibration mechanism inside the mounting shell, a motor fixedly connected to the inner wall of the mounting shell, the vibration mechanism comprising a vibration component and a cleaning component, the vibration component comprising a fixed plate, the fixed plate fixedly connected to the inner wall of the mounting shell, a drive rod rotatably connected to the inner wall of the fixed plate, a cam fixedly connected to the left side of the drive rod, a connecting rod fixedly connected to the lower part of the cam off-center, a hinge rod rotatably connected to the outer side of the connecting rod, a slide rod fixedly connected to the lower part of the fixed plate, a support member rotatably connected to the lower part of the hinge rod, a support plate fixedly connected to the lower part of the support member, a rubber wheel on the inner side of the support plate, and an mounting rod inserted into the inner wall of the support plate.

[0006] As a further description of the above technical solution:

[0007] The cleaning assembly includes a cleaning brush, which is located behind the rubber wheel. A rod is inserted into the support plate and the cleaning brush. The drive rod is fixedly connected to the output shaft of the motor and is driven to rotate by the motor.

[0008] As a further description of the above technical solution:

[0009] The support plate is equipped with a limiting component, which includes a limiting block that is slidably connected to the inner wall of the support plate. The upper part of the insertion rod has a slot one near the limiting block, and the upper part of the mounting rod has a slot two near the limiting block. The limiting block is inserted into the inner wall of slot one and slot two. The bottom of the limiting block has a groove. A pull rod is fixedly connected to the front of the limiting block. The pull rod slides through the front inner wall of the support plate, and the lower outer side of the pull rod is elastically connected to the support plate through a limiting spring.

[0010] As a further description of the above technical solution:

[0011] The mounting shell is fixedly connected to the top of the protective shell by bolts, the sliding rod is slidably connected to the inner wall of the support, and the rubber wheel rotates on the outer wall of the mounting rod.

[0012] As a further description of the above technical solution:

[0013] The upper part of the insertion rod is provided with a square protrusion.

[0014] As a further description of the above technical solution:

[0015] A T-shaped handle is fixedly connected to the front of the pull rod.

[0016] As a further description of the above technical solution:

[0017] The cleaning brush contacts the surface of the rubber wheel.

[0018] As a further description of the above technical solution:

[0019] The mounting rod extends from the left side of the inner wall of the support plate, and the insertion rod extends from the left side of the inner wall of the support plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by using the vibration mechanism and the screen cylinder in combination, when the screen cylinder is clogged, the cam is rotated to make the hinge rod on the lower side of the cam move up and down reciprocally, causing the support to drive the rubber wheel to collide with the screen cylinder, causing the screen cylinder to vibrate and clean the sand and gravel attached to the screen, preventing the screen from clogging and thus improving production efficiency. At the same time, when the rubber wheel collides with the screen cylinder, the surface of the rubber wheel is cleaned by the friction between the rotating rubber wheel and the cleaning brush, reducing the wear of the rubber wheel and the screen cylinder.

[0022] 2. In this utility model, by using the limiting component and the mounting rod and insert rod together, when it is necessary to maintain or replace the rubber wheel and cleaning brush, by pulling the pull rod, the limiting block is driven to squeeze the limiting spring, and slide out from the inner wall of the slot on the mounting rod and insert rod, thereby releasing the limitation and allowing the rubber wheel and cleaning brush to be removed quickly, thus improving maintenance efficiency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the vibration mechanism in this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the cam and hinge rod in this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the limiting component in this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the cleaning brush and insert rod in this utility model.

[0028] Legend:

[0029] 1. Support frame; 2. Screen cylinder; 3. Protective shell; 4. Vibration mechanism; 41. Vibration assembly; 411. Fixing plate; 412. Drive rod; 413. Cam; 414. Connecting rod; 415. Hinge rod; 416. Slide rod; 417. Support component; 418. Rubber wheel; 419. Support plate; 4110. Mounting rod; 42. Cleaning assembly; 421. Cleaning brush; 422. Insert rod; 5. Limiting assembly; 51. Limiting block; 52. Slot 1; 53. Slot 2; 54. Groove; 55. Pull rod; 56. Limiting spring; 6. Motor; 7. Mounting shell. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1 - Figure 3This utility model provides an embodiment of a sand screening device for construction engineering, including a support frame 1 that supports the sand screening device. A protective shell 3 is installed on the upper part of the support frame 1, and a screen cylinder 2 is installed inside the protective shell 3. When sand falls into the screen cylinder 2, the rotation of the screen cylinder 2 causes the sand to tumble and roll, achieving a screening effect. The protective shell 3 prevents the screened sand from overflowing from the screen cylinder 2 during operation. A mounting shell 7 is installed on the upper part of the protective shell 3, and the mounting shell 7 is fixedly connected to the top of the protective shell 3 by bolts. A vibration mechanism 4 is installed inside the mounting shell 7, which protects the two sets of vibration mechanisms 4 inside. A motor 6 is fixedly connected to the inner wall of the mounting shell 7, and the motor 6 drives the vibration mechanism 4 to achieve a vibration effect. The vibration mechanism 4 includes a vibration component 41 and a cleaning component 42. The vibration component 41 includes a fixing plate 411, which is fixedly connected to the inner wall of the mounting housing 7 to ensure the stability of the vibration mechanism 4 during operation. A drive rod 412 is rotatably connected to the inner wall of the fixing plate 411. The drive rod 412 is fixedly connected to the output shaft of the motor 6 and is driven to rotate by the motor 6. The drive rod 412 is used to drive the cam 413 to rotate. The cam 413 is fixedly connected to the left side of the drive rod 412. The cam 413, through cooperation with the connecting rod 414, drives the hinge rod 415 to form a reciprocating motion. The lower part of the cam 413, off-center from the center, is fixedly connected to the connecting rod 414. When the cam 413 moves, the connecting rod 414 is located at... The lower part of cam 413 is offset from the center. During the movement of cam 413, connecting rod 414 will rotate under the push of the cam 413 according to its contour. A hinge rod 415 is rotatably connected to the outer side of connecting rod 414. Hinged rod 415 is used to connect connecting rod 414 and support member 417. Hinged rod 415 is composed of two parts hinged together. A slide rod 416 is fixedly connected to the lower part of fixed plate 411. Support member 417 is rotatably connected to the lower part of hinge rod 415. Slide rod 416 is slidably connected to the inner wall of support member 417. When hinge rod 415 swings, support member 417 can play a balancing support role for hinge rod 415 and slide rod 416, preventing random swaying during movement, thus affecting the vibration effect. A support plate 419 is fixedly connected to the lower part of the 17 section. The support plate 419 supports the rubber wheel 418. The rubber wheel 418 is made of hard rubber. When the rubber wheel 418 collides with the screen cylinder 2, it generates vibration, reducing sand adhesion to the screen cylinder 2 and preventing clogging. At the same time, the rubber material reduces damage to the outside of the screen cylinder 2 when it collides with it. An installation rod 4110 is inserted into the inner wall of the support plate 419 to support the rubber wheel 418 and facilitate the disassembly and maintenance of the rubber wheel 418. The left side of the installation rod 4110 extends out of the inner wall of the support plate 419. The rubber wheel 418 rotates on the outer wall of the installation rod 4110. When it is necessary to disassemble and maintain the rubber wheel 418...The extended portion allows operators to easily access the mounting rod 4110, making the disassembly and maintenance of the rubber wheel 418 more convenient, thereby improving work efficiency.

[0032] Reference Figure 3 - Figure 5 The cleaning component 42 includes a cleaning brush 421, which is located behind the rubber wheel 418. The cleaning brush 421 contacts the surface of the rubber wheel 418. When the rubber wheel 418 rotates, the cleaning brush 421 can clean the sand on the surface of the rubber wheel 418, reduce wear, and improve service life. A rod 422 is inserted into the support plate 419 and the cleaning brush 421. The rod 422 extends out of the inner wall of the support plate 419 on the left side. The extended rod 422 is easy to pick up and facilitates the disassembly and installation of the cleaning brush 421. A square protrusion is provided on the upper part of the rod 422, which serves as a limit for the cleaning brush 421, preventing the cleaning brush 421 from failing to clean the rubber wheel 418 effectively when it rotates in contact with the rubber wheel 418.

[0033] Reference Figure 4 - Figure 5 The support plate 419 is equipped with a limiting component 5, which includes a limiting block 51. The limiting block 51 is slidably connected to the inner wall of the support plate 419. A slot 52 is provided on the upper part of the insertion rod 422 near the limiting block 51, and a slot 53 is provided on the upper part of the mounting rod 4110 near the limiting block 51. The limiting block 51 is inserted into the inner walls of the slots 52 and 53. When the limiting block 51 is inserted into the inner walls of the slots 52 and 53, the position of the mounting rod 4110 and the insertion rod 422 can be restricted, preventing the rubber wheel 418 and the cleaning brush 421 from moving arbitrarily during operation. A groove 54 is provided at the bottom of the limiting block 51. When the limiting block 51 moves, the groove 54 is positioned on the mounting rod 4110. When the mounting rod 4110 and the insertion rod 422 are removed simultaneously, the situation of only being able to remove the insertion rod 422 is avoided. A pull rod 55 is fixedly connected to the front of the limiting block 51, and a T-shaped handle is fixedly connected to the front of the pull rod 55, making the pull rod 55 more convenient to use. The pull rod 55 slides through the inner wall of the front of the support plate 419. The lower outer side of the pull rod 55 is elastically connected to the support plate 419 through the limiting spring 56. The limiting spring 56 provides elastic force to the limiting block 51, so that the limiting block 51 is stably inserted into the inner wall of the second slot 53 and the first slot 52, enhancing the stability of the limiting block 51. When the pull rod 55 pulls the limiting block 51, the limiting spring 56 is compressed, and the mounting rod 4110 and the insertion rod 422 can be pulled out.

[0034] Working principle: When the screen cylinder 2 is clogged, the motor 6 is turned on first. The motor 6 drives the cam 413 and the connecting rod 414 located off-center at the lower part of the cam 413 to rotate through the drive rod 412. This causes the upper part of the hinge rod 415 on the outer side of the connecting rod 414 to swing regularly, thereby driving the support member 417 connected to the lower part of the hinge rod 415 to move up and down on the outer wall of the slide rod 416 to perform reciprocating motion.

[0035] At the same time, the support member 417 drives the support plate 419 to move up and down. The rubber wheel 418 set inside the support plate 419 will move up and down with the support plate 419 and collide with the outside of the screen cylinder 2, thereby generating vibration, removing the sand attached to the screen cylinder 2, reducing the occurrence of blockage, and thus improving production efficiency.

[0036] At the same time, the rubber wheel 418 collides and rubs with the screen cylinder 2, causing the rubber wheel 418 to rotate. The cleaning brush 421 located on the rear side of the rubber wheel 418 contacts the surface of the rubber wheel 418 to clean the sand on its surface, thereby reducing the wear of the rubber wheel 418 and improving its service life.

[0037] When maintenance or replacement of the rubber wheel 418 and cleaning brush 421 is required, pulling the lever 55 causes the limiting block 51 to disengage from the slot 52 on the upper part of the insert rod 422. At the same time, the groove 54 on the limiting block 51 moves above the mounting rod 4110, simultaneously releasing the limiting effect on the insert rod 422 and the mounting rod 4110.

[0038] After that, the mounting rod 4110 of the rubber wheel 418 and the insertion rod 422 of the cleaning brush 421 can be disassembled at the same time, thereby improving maintenance efficiency. Since the lower outer side of the pull rod 55 is elastically connected to the support plate 419 through the limiting spring 56, it provides a certain elastic force to the limiting block 51, making it less likely to fall off, thus enhancing the stability of the limiting block 51.

[0039] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand screening device for construction engineering, comprising a support frame (1), characterized in that: The support frame (1) is provided with a protective shell (3) on its upper part. A screen cylinder (2) is provided inside the protective shell (3). An installation shell (7) is provided on the upper part of the protective shell (3). A vibration mechanism (4) is provided inside the installation shell (7). A motor (6) is fixedly connected to the inner wall of the installation shell (7). The vibration mechanism (4) includes a vibration component (41) and a cleaning component (42). The vibration component (41) includes a fixing plate (411). The fixing plate (411) is fixedly connected to the inner wall of the installation shell (7). A drive rod (412) is rotatably connected to the inner wall of the fixing plate (411). A cam (413) is fixedly connected to the left side of the moving rod (412). A connecting rod (414) is fixedly connected to the lower part of the cam (413) off-center. A hinge rod (415) is rotatably connected to the outer side of the connecting rod (414). A slide rod (416) is fixedly connected to the lower part of the fixed plate (411). A support member (417) is rotatably connected to the lower part of the hinge rod (415). A support plate (419) is fixedly connected to the lower part of the support member (417). A rubber wheel (418) is provided on the inner side of the support plate (419). An installation rod (4110) is inserted into the inner wall of the support plate (419).

2. The sand screening device for construction engineering according to claim 1, characterized in that: The cleaning assembly (42) includes a cleaning brush (421) which is located behind the rubber wheel (418). A rod (422) is inserted into the support plate (419) and the cleaning brush (421). The drive rod (412) is fixedly connected to the output shaft of the motor (6) and the motor (6) drives the drive rod (412) to rotate.

3. A sand screening device for construction engineering according to claim 2, characterized in that: The support plate (419) is provided with a limiting component (5). The limiting component (5) includes a limiting block (51). The limiting block (51) is slidably connected to the inner wall of the support plate (419). The upper part of the insertion rod (422) is provided with a slot 1 (52) near the limiting block (51). The upper part of the mounting rod (4110) is provided with a slot 2 (53) near the limiting block (51). The limiting block (51) is inserted into the inner wall of the slot 1 (52) and the slot 2 (53). The bottom of the limiting block (51) is provided with a groove (54). The front part of the limiting block (51) is fixedly connected with a pull rod (55). The pull rod (55) slides through the front inner wall of the support plate (419). The lower outer side of the pull rod (55) is elastically connected to the support plate (419) through a limiting spring (56).

4. A sand screening device for construction engineering according to claim 1, characterized in that: The mounting shell (7) is fixedly connected to the top of the protective shell (3) by bolts, the slide rod (416) is slidably connected to the inner wall of the support (417), and the rubber wheel (418) rotates on the outer wall of the mounting rod (4110).

5. A sand screening device for construction engineering according to claim 3, characterized in that: The upper part of the insertion rod (422) is provided with a square protrusion.

6. A sand screening device for construction engineering according to claim 3, characterized in that: A T-shaped handle is fixedly connected to the front of the pull rod (55).

7. A sand screening device for construction engineering according to claim 2, characterized in that: The cleaning brush (421) contacts the surface of the rubber wheel (418).

8. A sand screening device for construction engineering according to claim 2, characterized in that: The mounting rod (4110) extends out of the inner wall of the support plate (419) on the left side, and the insertion rod (422) extends out of the inner wall of the support plate (419) on the left side.

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