A kind of concrete sand and gravel screening equipment for construction engineering

Abstract

The utility model relates to the technical field of construction engineering, and specifically to a construction engineering concrete sand and gravel screening equipment, comprising a box body, a support plate, a screen, and a driving member; the screen is a plurality of screens evenly distributed up and down, and are all obliquely distributed and arranged between two support plates, and the mesh size of the screen distributed from top to bottom is maintained to gradually decrease; a discharge port is arranged at one end of the box body corresponding to the lower inclination of the screen, the discharge port is also connected to a discharge pipe, a switch valve is also provided on the discharge pipe, and the plurality of discharge pipes distributed from top to bottom are gradually reduced by two times; the driving member is configured to drive the support plate and the screen to move right as a whole to a preset distance at a preset speed V1, and then drive the support plate and the screen to move left as a whole to reset at a preset speed V2, and keep V2>V1; the utility model saves time and labor, realizes automated and efficient screening processing, and improves the intelligence level of recycling and reuse of crushed stone materials with different particle sizes.

Description

Technical Field

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

[0002] In the construction technology of construction engineering, a lot of waste building concrete sand and gravel will be generated on the construction site. This mixed material cannot be directly reused. It must be effectively screened to remove large-particle waste and screen out available medium and small-size building gravel materials. However, the traditional sand and gravel screening equipment uses multiple vibrators, which is expensive, not cost-effective, and has poor use effect. Further analysis shows that there is a lack of reasonable screening for recycled materials of different particle sizes, and the separation effect is poor, which can easily cause the screen to be blocked, thereby affecting the recycling efficiency of sand and gravel materials. Moreover, the reuse scenarios of recycled materials of different particle sizes are different. Sand and gravel materials of medium and small particle sizes can be used for direct backfilling and paving of road foundations. Sand and gravel materials with larger particle sizes need to be collected and transported to other available construction sites, or crushed and processed, or used as foundation roads. In view of the problem that the screening equipment of the existing technology has poor use effect, easily causes the mesh of the screen to be blocked, and cannot realize reasonable and efficient material screening operations, we propose a concrete sand and gravel screening equipment for construction engineering. Summary of the invention

[0003] In order to solve the above-mentioned shortcomings and deficiencies of the existing sand and gravel screening equipment in the prior art, the utility model provides a construction engineering concrete sand and gravel screening equipment with a reasonable structural design, which can realize automatic and efficient screening of concrete sand and gravel materials of different particle sizes, avoid screen clogging, and improve the recycling efficiency of concrete sand and gravel materials.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A construction engineering concrete sand and gravel screening device, comprising a box, a support plate, a screen, and a driving member; the box is distributed up and down, and a feed port is provided at the top, and a discharge port is provided on the front side wall; the support plates are two symmetrically distributed left and right, and can be movably arranged in the box; the screens are multiple evenly distributed up and down, and are all obliquely distributed between the two support plates, and the mesh size of the screens distributed from top to bottom is maintained to gradually decrease, and a parallel baffle is also provided below the screen; the discharge port is provided A lower inclined end of the screen and baffle is provided on one side of the box body to form a multi-stage screening structure; a spherical surface structure with a concave center is also provided at the input end of the discharge port; a discharge pipe is also connected to the output end of the discharge port, the discharge pipe is inclined and is also provided with a switch valve, and the multiple discharge pipes distributed from top to bottom can show a trend of gradually decreasing by two times; the driving member is configured to drive the support plate and the screen to move right as a whole to a preset distance at a preset speed V1, and then drive the support plate and the screen to move left as a whole to reset at a preset speed V2, and maintain V2>V1.

[0006] As a preferred technical solution: the driving component includes a speed regulating motor and a driving screw; the speed regulating motor is arranged in the box body, and the speed regulating motor is kept rotating forward to drive the support plate to move right at a speed V1, and reversely to drive the support plate to move left at a speed V2; one end of the driving screw is connected to the speed regulating motor, and the other end passes through the two support plates and is connected to the inner wall of the left box body, and the driving screw and the support plate can maintain relative rotation.

[0007] A further preferred technical solution is that the speed V2 of the support plate and the screen moving to the left as a whole is (1.2-3) times the speed V1 of the right movement.

[0008] A further preferred technical solution: the driving member further includes a guide rod; the guide rods are two symmetrically distributed front and back, each of the guide rods passes through the two support plates and has both ends connected to the inner wall of the box.

[0009] A further preferred technical solution is that the support plate and the screen form an integrated structure, and a moving block is provided below the support plate, and a moving groove is provided on the inner wall of the box body, and the moving block is movably adapted to be installed in the moving groove.

[0010] A further preferred technical solution is that the moving blocks and the moving slots are installed in three matching groups.

[0011] The advantages of the utility model compared with the prior art are: the screening equipment has a reasonable structural design, and through the cooperation of the support plate, the screen and the driving part, multi-stage screening of different particle sizes of building sand and gravel materials is realized, and a speed regulating motor, a driving screw and a guide rod are adopted. Under the action of the forward and reverse rotation of the speed regulating motor, the forward rotation is low speed and the reverse rotation is high speed, forming a differential shaking mode, avoiding the problem of the prior art directly using a vibrator, which is expensive and has a low cost performance; the screening effect of the screen on sand and gravel materials is effectively enhanced, and the phenomenon of mesh clogging is avoided; the screening operation efficiency of concrete sand and gravel materials is further improved, thereby improving the centralized collection effect of recyclable sand and gravel materials, saving resources, and being more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a structural stereogram of the driving member of the utility model.

[0015] Figure 3 It is a right side view of the box body of the present utility model.

[0016] In the figure: 1-box, 2-support plate, 3-screen, 4-driving member, 5-feeding port, 6-discharging port, 7-discharging pipe, 8-switching valve, 9-speed regulating motor, 10-driving screw, 11-guide rod, 12-moving block, 13-moving groove, 14-feeding hopper, 15-baffle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "provided with" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0019] Example: Figure 1-Figure 3 As shown:

[0020] A construction engineering concrete sand and gravel screening equipment includes a box body 1, a support plate 2, a screen 3, and a driving member 4. The box body 1 is distributed up and down, and a feed port 5 is provided at the top, and a discharge port 6 is provided on one side of the box body 1. In this embodiment, the discharge port is arranged on the front side wall of the box body. The feed port 5 is also connected to a feed hopper 14, so that the inlet is enlarged and feeding is convenient. The support plates 2 are two symmetrically distributed on the left and right, and can be movably arranged in the box body 1 on the left and right. Figure 1 As shown: the sieves 3 are multiple and evenly distributed up and down, and are all arranged between the two support plates 2 in a tilted distribution from front to back, and the mesh size of the sieves 3 distributed from top to bottom is kept to be gradually reduced, and a baffle 15 is also provided below the lowest sieve 3 as the lowest filter layer to prevent leakage and residue at the bottom of the box. The purpose of such a setting is to achieve the screening and collection of different concrete sand and gravel materials, and to improve the convenience and efficiency of subsequent recycling and reuse. At the same time, it not only solves the problem of clearing and transporting concrete gravel materials, but also achieves the purpose of recycling and reusing on the construction site and saving costs.

[0021] In this embodiment, Figure 3As shown: the discharge port 6 is arranged at the lower end of the inclined screen 3 and baffle 15 on one side of the box body to form a multi-stage screening structure; the input end of the discharge port is provided with a spherical structure with a concave center, so that it is convenient to gather materials. The output end of the discharge port 6 is also connected to a discharge pipe 7, which is kept inclined and is also provided with a switch valve 8, which is connected to a control button, and the multiple discharge pipes 7 distributed from top to bottom can show a trend of gradually decreasing by two times; specifically, the length of the discharge pipe of the bottom layer is L, the length of the discharge pipe of the middle layer is 2L, and the length of the discharge pipe of the upper layer is 4L. In this embodiment, the screen is in an inclined distribution structure with the back high and the front low, and the discharge pipe is arranged on the front side wall of the box body, and the discharge pipe is also inclined, which is convenient for discharging. The sum of the number of screens plus the number of baffles is equal to the number of discharge pipes. That is, in this embodiment, three layers of screens and one layer of baffles are used, so the number of discharge pipes is four, forming a four-stage filtration and recovery structure. The length of the discharge pipe distributed from top to bottom tends to decrease gradually. This arrangement makes it easier to place multiple material barrels for collection at the same time, which is more efficient.

[0022] like Figure 2 As shown: In this embodiment, the driving member 4 is configured to drive the support plate 2 and the screen 3 to move right as a whole to a preset distance at a preset speed V1, and then drive the support plate 2 and the screen 3 to move left as a whole to reset at a preset speed V2, and keep V2>V1. Specifically, the driving member 4 includes a speed regulating motor 9 and a driving screw 10. The speed regulating motor 9 is arranged on the box body 1, and the speed regulating motor 9 is kept rotating forward to drive the support plate 2 to move right at a speed V1, and reverse to drive the support plate 2 to move left at a speed V2; and V2=(1.2-3)V1. The speed regulating motor adopts a servo control motor. One end of the driving screw 10 is connected to the speed regulating motor 9, and the other end passes through the two support plates 2 and is connected to the inner wall of the left box body 1, and the driving screw 10 and the support plate 2 are kept relatively rotatable. The driving member 4 also includes a guide rod 11; the guide rods 11 are two symmetrically distributed front and back, and each guide rod 11 passes through the two support plates 2 and is connected to the inner wall of the box body 1 at both ends. The support plate 2 and the screen 3 form an integral structure, and a moving block 12 is provided below the support plate 2, and a moving groove 13 is provided on the inner wall of the box body, and the moving block 12 is movably adapted to be installed in the moving groove 13. The moving block 12 and the moving groove 13 are three sets of matching installations.

[0023] With this setting, turn on the speed regulating motor. Initially, the speed regulating motor rotates forward in low-speed mode, driving the drive screw to rotate synchronously. A screw nut structure is formed between the drive screw and the support plate, which in turn drives the support plate and the screen to move right at a speed of V1. During the movement, the moving block and the moving slot play a good role in guiding and assisting the travel limit. Next, the speed regulating motor reverses in high-speed mode, driving the support plate and the screen to move left and reset at a speed of V2. This cycle is repeated for a preset number of times, and the shaking and vibrating effect of the screen on the construction crushing materials can be enhanced through differential drive. In actual use, the screen is vibrated in a differential drive mode with a speed of V2 = (1.2-3) V1, and the equipment performance and screening effect are excellent, which has more market promotion value.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A construction engineering concrete sand and gravel screening equipment, characterized by: The invention comprises a box body (1), a support plate (2), a screen (3), and a driving member (4); the box body (1) is distributed vertically, and a feeding port (5) is provided at the top, and a discharge port (6) is provided at one side of the box body; the support plates (2) are two symmetrically distributed left and right, and are arranged in the box body (1) so as to be movable left and right; the screens (3) are multiple and evenly distributed up and down, and are arranged between the two support plates (2) in a front-back tilted distribution, and the mesh size of the screens (3) distributed from top to bottom is maintained to gradually decrease, and a baffle (15) distributed in parallel is also provided below the lowest screen (3); the discharge port (6) is arranged at the bottom of the box body. The body has a side corresponding to the lower end of the screen (3) and the baffle (15) to form a multi-stage screening structure; the input end of the discharge port (6) is also provided with a spherical surface structure with a concave center; the output end of the discharge port (6) is also connected to a discharge pipe (7), the discharge pipe (7) is obliquely distributed and is also provided with a switch valve (8), and the lengths of the plurality of discharge pipes (7) distributed from top to bottom can be gradually reduced by two times; the driving member (4) is configured to drive the support plate (2) and the screen (3) to move right as a whole to a preset distance at a preset speed V1, and then drive the support plate (2) and the screen (3) to move left as a whole to reset at a preset speed V2, and keep V2>V1.

2. A construction engineering concrete sand and gravel screening equipment according to claim 1, characterized in that: The driving member (4) comprises a speed regulating motor (9) and a driving screw (10); the speed regulating motor (9) is arranged in the box body (1), and the speed regulating motor (9) is kept rotating forward to drive the support plate (2) to move rightward at a speed V1, and is kept rotating reversely to drive the support plate (2) to move leftward at a speed V2; one end of the driving screw (10) is connected to the speed regulating motor (9), and the other end passes through the two support plates (2) and is connected to the inner wall of the left box body (1), and the driving screw (10) and the support plate (2) are kept relatively rotatable.

3. A construction engineering concrete sand and gravel screening equipment according to claim 2, characterized in that: The speed V2 of the overall leftward movement of the support plate (2) and the screen (3) is 1.2-3 times the rightward movement speed V1.

4. The construction engineering concrete sand and gravel screening equipment according to claim 3 is characterized by: The driving member (4) further comprises a guide rod (11); the guide rods (11) are two and are symmetrically distributed front and back, and each guide rod (11) passes through the two support plates (2) and has two ends connected to the inner wall of the box body (1).

5. The construction engineering concrete sand and gravel screening equipment according to claim 4 is characterized by: The support plate (2) and the screen (3) form an integral structure, and a moving block (12) is provided below the support plate (2). The inner side wall of the box body (1) is also provided with a moving groove (13), and the moving block (12) is movably adapted to be installed in the moving groove (13).

6. The construction engineering concrete sand and gravel screening equipment according to claim 5, characterized in that: The moving blocks (12) and the moving grooves (13) are three sets that are matched and installed.

7. The construction engineering concrete sand and gravel screening equipment according to claim 1 is characterized by: The feed port (5) is also connected to a feed hopper (14).

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