Sandstone impurity removing and sorting device for building

Abstract

The utility model discloses a sandstone impurity removing and sorting device for construction, relates to the field of constructional engineering, and aims to solve the problems that an existing sandstone impurity removing device is not thorough in impurity removing, and screen holes of the existing sandstone impurity removing device are prone to being blocked during screening, so that the residual rate of impurities in sandstone is high, and the screening efficiency is low. A vibrating screen is fixedly connected to the elastic support, a discharging opening is formed in the side edge of the vibrating screen, a material distributing box is arranged on the side edge of the discharging opening, a conveying belt is arranged above the vibrating screen and the material distributing box, a shifting rod is fixedly connected to the conveying belt, a supporting plate is rotationally connected to the conveying belt, and the supporting plate is fixedly connected with the fixing frame. A first discharging opening, a second discharging opening and a third discharging opening are formed in the lower portion of the material distribution box, one side of the second discharging opening is fixedly connected with a screening plate, and the other side of the second discharging opening is fixedly connected with a dividing rod. The sand and gravel screening device has the advantages that sand and gravel are efficiently screened, screened materials are classified, and the quality of the screened sand and gravel is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a sand and gravel removal and sorting device for building. Background Technology

[0002] In the field of construction engineering, sand and gravel are the basic raw materials for core materials such as concrete and mortar, and their quality directly affects the stability, durability, and overall safety of building structures. However, on construction sites, sand and gravel materials are usually stored in open-air piles, exposed to the natural environment for a long time. This makes them highly susceptible to contamination by lightweight impurities such as fallen leaves, branches, and plastic film. Furthermore, due to incomplete separation during mining or transportation, they often contain large amounts of heavy impurities such as pebbles and mud. The inclusion of these impurities not only reduces the particle size uniformity of the sand and gravel but also leads to imbalances in the concrete mix design, causing insufficient strength, cracking, water seepage, and other engineering quality problems. It can even create safety hazards, threatening the lives and property of the owners.

[0003] Currently, construction sites generally use traditional screens to manually or mechanically sieve sand and gravel. In actual use, single-layer screens can only classify by particle size and cannot specifically remove light impurities (such as fallen leaves). Light impurities easily adhere to the surface of sand and gravel or get stuck in the gaps of the screen. In addition, changes in the moisture content of sand and gravel or the accumulation of fine particles can also cause the screen holes to become clogged. Therefore, it is necessary to clean the screen holes frequently, which affects the construction progress. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a sand and gravel impurity removal and sorting device for construction. This design effectively solves the problems of existing sand and gravel impurity removal devices, which do not completely remove impurities and whose screen holes are easily blocked during screening, resulting in a high residual rate of impurities in sand and gravel and low screening efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes a fixed frame, on which an elastic support is fixedly connected, and on which a vibrating screen is fixedly connected. A discharge port is provided on the side of the vibrating screen, and a distribution box is provided on the side of the discharge port. A conveyor belt is provided above the vibrating screen and the distribution box. A lever is fixedly connected to the conveyor belt, and a support plate is rotatably connected to the conveyor belt. The support plate is fixedly connected to the fixed frame. A first discharge port, a second discharge port, and a third discharge port are provided below the distribution box. A screen plate is fixedly connected to one side of the second discharge port, and a dividing rod is fixedly connected to the other side of the second discharge port.

[0006] Preferably, a protective plate is fixedly connected to the vibrating screen, a hopper is fixedly connected to the protective plate, a feed pipe is fixedly connected to the side of the hopper, the hopper is located below the vibrating screen, and the bottom of the hopper is inclined towards the feed pipe.

[0007] Preferably, the elastic support includes two support beams, and two sets of obliquely placed elastic plates are fixedly connected to each of the two support beams. The elastic plates are fixedly connected to the protective plate.

[0008] Preferably, the vibrating screen is fixed at an angle inside the protective plate.

[0009] Preferably, a drive roller is fitted on one side of the conveyor belt, and a drive pulley is coaxially fixedly connected to the drive roller. An adjusting roller is fitted on the other side of the conveyor belt, and an adjusting block is rotatably connected to the adjusting roller. A groove is provided on the support plate for the adjusting block to slide in, and an adjusting screw is rotatably connected in the groove. The adjusting screw is threadedly connected to the adjusting block.

[0010] Preferably, a locking pin is fixedly connected to the side of the support plate, and a baffle plate is fixedly connected to the locking pin. The baffle plate is provided with multiple fixing holes.

[0011] Preferably, a hopper is fixedly connected below the first discharge port, the second discharge port and the third discharge port, and the bottom of the hopper is a sloping groove structure.

[0012] Compared with the prior art, the outstanding advantages of this utility model are:

[0013] This utility model has an elastic support installed below the vibrating screen. When the screening is too heavy, the vibrating screen will continue to shake to avoid clogging of the screen holes and improve screening efficiency. At the same time, a material distribution box is installed on the side of the vibrating screen. The material distribution box performs secondary sorting of impurities after screening and performs precise classification of sand and gravel.

[0014] This invention adds a conveyor belt and scraper above the vibrating screen and the distribution box. The conveyor belt helps move the waste material on the vibrating screen to the distribution box, avoiding excessive accumulation of impurities on the vibrating screen and helping to improve the overall screening efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the conveyor belt connection structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure of the vibrating screen of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection structure between the elastic bracket and the protective plate of this utility model.

[0019] Figure 5 This is a schematic diagram of the front structure of this utility model, omitting the support plate.

[0020] Figure 6 This is a schematic cross-sectional view of the material distribution box of this utility model.

[0021] The following are the labels in the diagram: 1. Fixed frame; 2. Elastic support; 201. Support beam; 202. Elastic sheet; 3. Vibrating screen; 4. Discharge port; 5. Distribution box; 6. Conveyor belt; 7. Actuator; 8. Support plate; 9. First discharge port; 10. Second discharge port; 11. Third discharge port; 12. Screen plate; 13. Dividing rod; 14. Protective plate; 15. Collection hopper; 16. Discharge pipe; 17. Drive roller; 18. Drive pulley; 19. Adjusting roller; 20. Adjusting block; 21. Slide groove; 22. Adjusting screw; 23. Locking pin; 24. Baffle plate; 25. Fixing hole; 26. Discharge hopper. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. 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.

[0023] Please see the appendix Figure 1-6 This embodiment discloses a sand and gravel impurity removal and sorting device for construction: it includes a fixed frame 1, an elastic support 2 fixedly connected to the fixed frame 1, a vibrating screen 3 fixedly connected to the elastic support 2, a discharge port 4 on the side of the vibrating screen 3, a distribution box 5 on the side of the discharge port 4, a conveyor belt 6 above the vibrating screen 3 and the distribution box 5, a lever 7 fixedly connected to the conveyor belt 6, a support plate 8 rotatably connected to the conveyor belt 6, the support plate 8 being fixedly connected to the fixed frame 1, a first discharge port 9, a second discharge port 10 and a third discharge port 11 below the distribution box 5, a screen plate 12 fixedly connected to one side of the second discharge port 10, and a dividing rod 13 fixedly connected to the other side of the second discharge port 10.

[0024] The fixing frame 1 is a rectangular frame welded from multiple square steel bars. The vibrating screen 3 and the distribution box 5 are supported by the fixing frame 1 in a position off the ground. The vibrating screen 3 is entirely located on the elastic support 2. The elastic support 2 itself has a certain rigidity and deformation recovery ability. When the vibrating screen 3 shakes, the elastic support 2 can deform to accommodate the slight movement of the vibrating screen 3, while also providing good support for the vibrating screen 3. The right side of the vibrating screen 3 is fitted with the distribution box 5. The distribution box 5 has a groove on the left side, and part of the vibrating screen 3 is located in the groove. This ensures that when the vibrating screen 3 shakes, the right side of the vibrating screen 3 is still positioned above the opening on the upper side of the distribution box 5, ensuring that the material on the vibrating screen 3 can smoothly enter the distribution box 5. The screen plate 12 and the dividing rod 13 inside the distribution box 5 are arranged in a V-shape. The material entering the distribution box 5 will first fall onto the screen plate 12, which acts as a guide for the material. Fine sand and gravel undergo secondary screening to increase the output ratio. Fine sand and gravel passing through screen plate 12 flow out from the first discharge port 9. The material on the right side of screen plate 12 consists of stones and light impurities (such as leaves). The dividing rod 13 is composed of multiple equally spaced rods. An air extraction pipe is connected to the right side of the rod, which generates suction in the right chamber of the dividing rod 13. The suction draws light impurities into the right side of the dividing rod 13, and then the light impurities flow out from the third discharge port 11. Stones flow out from the second discharge port 10 between the dividing rod 13 and screen plate 12. To increase the speed at which the screened material on the vibrating screen 3 moves to the distribution box 5 and to avoid the accumulation of screened material on the vibrating screen 3, a conveyor belt 6 is installed on the vibrating screen 3 and the distribution box 5. One end of the conveyor belt 6 is located in the middle of the vibrating screen 3, and the other end is located on the left side of the discharge port 4. The scraper on the conveyor belt 6 is responsible for cleaning the material above the vibrating screen 3.

[0025] Furthermore, to increase the material storage capacity of the vibrating screen 3 and prevent the screened material from rolling off its edges, a protective plate 14 is provided around the vibrating screen 3. The bottom of the protective plate 14 has a funnel-shaped structure, and a collection hopper 15 and a discharge pipe 16 are installed below the protective plate 14. After the vibrating screen 3 screens the sand and gravel, the sand and gravel can be collected from below the discharge pipe 16, eliminating the need for filling the sand and gravel after screening, which is convenient for subsequent workers. To facilitate the movement of sand and gravel in the collection hopper 15, the inner wall of the collection hopper 15 has a smooth inclined structure, which facilitates the movement of sand and gravel to the discharge pipe 16. A vibrator is installed at the bottom of the protective plate 14. The vibrator is the power source for the vibration of the vibrating screen 3 and the protective plate 14. The vibrator is existing technology and will not be described in detail here.

[0026] like Figure 4As shown, the elastic support 2 includes two support beams 201, which are located on the left and right sides below the protective plate 14. Each support beam 201 has two sets of elastic plates 202. The four elastic plates 202 support the four corners below the protective plate 14 to ensure the stability of the protective plate 14. The four elastic plates 202 are slightly tilted outward and can swing left and right after being shaken. By swinging left and right, the screen material above the vibrating screen 3 can be further pushed to the right, and the particles or impurities attached to the screen holes can be shaken off to avoid screen blockage. Furthermore, in order to make the screen material on the vibrating screen 3 move smoothly towards the discharge port, the vibrating screen 3 is placed at an angle on the protective plate 14.

[0027] like Figure 1 and Figure 5 As shown, the conveyor belt 6 is driven by the drive roller 17. The drive pulley 18 outside the drive roller 17 is connected to the external pulley assembly. The pulley assembly drives the drive pulley 18 and the drive roller 17 to rotate synchronously. The drive roller 17 drives the conveyor belt 6 to rotate. The adjusting roller 19 is a driven roller. Adjusting blocks 20 are rotatably connected to both sides of the adjusting roller 19. The adjusting blocks 20 can move vertically in the slide 21. The vertical movement of the adjusting blocks 20 changes the distance between the conveyor belt 6 and the vibrating screen 3, thereby improving the applicability of the device to different screened materials. The vertical movement of the adjusting blocks 20 is adjusted by the adjusting screw 22. The position of the adjusting block is moved and locked by rotating the adjusting screw.

[0028] The screened material enters the vibrating screen 3 from the left side of the conveyor belt 6. To prevent the screened material from scattering onto the conveyor belt 6 during the feeding process, a baffle plate 24 is installed on the left side of the conveyor belt 6. The fixing hole 25 of the baffle plate 24 is interference-fitted with the locking pin 23. The baffle plate 24 is locked into the locking pin 23 through the fixing hole 25. Multiple fixing holes 25 are provided, and the height of the baffle plate 24 is adjusted by the position of the mating fixing holes 25.

[0029] A hopper 26 is fixedly connected below the first discharge port 9, the second discharge port 10, and the third discharge port 11. The opening of the hopper 26 faces forward, and the bottom of the hopper 26 is tilted forward and downward to facilitate the forward discharge of material.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is 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 construction sand and gravel impurity removal and sorting device, characterized by: The device includes a fixed frame (1), on which an elastic support (2) is fixedly connected. A vibrating screen (3) is fixedly connected to the elastic support (2). A discharge port (4) is provided on the side of the vibrating screen (3). A distribution box (5) is provided on the side of the discharge port (4). A conveyor belt (6) is provided above the vibrating screen (3) and the distribution box (5). A lever (7) is fixedly connected to the conveyor belt (6). A support plate (8) is rotatably connected to the conveyor belt (6). The support plate (8) is fixedly connected to the fixed frame (1). A first discharge port (9), a second discharge port (10) and a third discharge port (11) are provided below the distribution box (5). A screen plate (12) is fixedly connected to one side of the second discharge port (10). A dividing rod (13) is fixedly connected to the other side of the second discharge port (10).

2. A device for removing impurities and sorting sand and gravel for construction purposes according to claim 1, characterized in that: A protective plate (14) is fixedly connected to the vibrating screen (3), and a hopper (15) is fixedly connected to the protective plate (14). A feed pipe (16) is fixedly connected to the side of the hopper (15). The hopper (15) is located below the vibrating screen (3), and the bottom of the hopper (15) is inclined towards the feed pipe (16).

3. A device for removing impurities from sand and gravel for construction purposes according to claim 2, characterized in that: The elastic support (2) includes two support beams (201), and two sets of inclined elastic plates (202) are fixedly connected to each of the two support beams (201). The elastic plates (202) are fixedly connected to the protective plate (14).

4. A device for removing impurities from sand and gravel for construction purposes according to claim 2, characterized in that: The vibrating screen (3) is fixed at an angle inside the protective plate (14).

5. A device for removing impurities from sand and gravel for construction purposes according to claim 1, characterized in that: One side of the conveyor belt (6) is fitted with a drive roller (17), and the drive roller (17) is coaxially fixedly connected to a drive pulley (18). The other side of the conveyor belt (6) is fitted with an adjusting roller (19), and the adjusting roller (19) is rotatably connected to an adjusting block (20). The support plate (8) is provided with a sliding groove (21) for the adjusting block (20) to slide. An adjusting screw (22) is rotatably connected in the sliding groove (21), and the adjusting screw (22) is threadedly connected to the adjusting block (20).

6. A device for removing impurities and sorting sand and gravel for construction purposes according to claim 1 or 5, characterized in that: The support plate (8) is fixedly connected to a locking pin (23) on its side, and a baffle plate (24) is fixedly connected to the locking pin (23). The baffle plate (24) is provided with multiple fixing holes (25).

7. A device for removing impurities from sand and gravel for construction purposes according to claim 1, characterized in that: The first discharge port (9), the second discharge port (10) and the third discharge port (11) are all fixedly connected to a feeding hopper (26), and the bottom of the feeding hopper (26) is a sloping groove structure.

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