Gravel screening device for building construction

Abstract

The utility model relates to the technical field of gravel screening, in particular to a gravel screening device for building construction, which comprises a support frame, a fixed screen is arranged at the upper end of the support frame, the lower end of the fixed screen is connected with a lower guide plate inclining inwards, and two sides of the upper end of the fixed screen are connected with side guide plates inclining outwards. A detachable movable screen is arranged at the upper end of the fixed screen, the movable screen is pressed at the upper end of the fixed screen, hanging plates are arranged at the two ends of the movable screen, the hanging plates are hooked at the upper end and the lower end of the fixed screen, the two sides of the movable screen are positioned through side guide plates, and meshes of the movable screen are smaller than those of the fixed screen; according to the utility model, the movable screen and the fixed screen can be used for respectively screening gravels with different particle sizes, so that the screening range is enlarged, the utilization rate and the use range of the device are improved, and the problems of single size and use limitation in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sandstone screening technical field, concretely is sandstone screening device for building construction. BACKGROUND

[0002] Sandstone is one of important raw materials of building construction. Different construction requirements are different to sandstone particle size. Therefore, to ensure construction quality, it is necessary to ensure the uniformity of sandstone particle size. Screening through screen mesh can remove sandstone of larger particle size that does not meet the requirements.

[0003] Patent CN216779351U discloses a simple and rapid sandstone screening and loading system, which can realize the synchronization of sandstone screening and loading, greatly improving the construction efficiency. However, the device can only screen sandstone of one size, and the screening size is relatively single, which has limitations in use. UTILITY MODEL CONTENT

[0004] The utility model provides a sandstone screening device for building construction, which can screen sandstone of different particle sizes through movable screen mesh and fixed screen mesh, increases the screening range, improves the device utilization rate, meets the different screening requirements in building construction, increases the use range of the device, and solves the problems of single size and limited use of the prior art.

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

[0006] A sandstone screening device for building construction, comprising a support frame, a fixed screen mesh is arranged at the upper end of the support frame, a downwardly inclined lower guide plate is connected to the lower end of the fixed screen mesh, outwardly inclined side guide plates are connected to the both sides of the upper end of the fixed screen mesh, a detachable movable screen mesh is arranged at the upper end of the fixed screen mesh, the movable screen mesh is pressed on the upper end of the fixed screen mesh, hanging plates are arranged at the both ends of the movable screen mesh, the hanging plates are hooked on the upper and lower ends of the fixed screen mesh, the both sides of the movable screen mesh are positioned through the side guide plates, and the mesh size of the movable screen mesh is smaller than that of the fixed screen mesh.

[0007] Preferably, the number of movable screen meshes is multiple, and the mesh size of each movable screen mesh is different.

[0008] Preferably, the higher end of the movable screen mesh is provided with an upper guide plate connected with the side guide plate.

[0009] Preferably, the support frame comprises parallel front and rear support cylinders connected by a connecting rod, the upper end of the front support cylinder is inserted with a front support rod supporting the fixed screen, the upper end of the rear support cylinder is inserted with a rear support rod supporting the fixed screen, and the side walls of the front and rear support cylinders are both provided with positioning bolts.

[0010] Preferably, the side walls of the front and rear support rods are both provided with positioning holes matched with the positioning bolts.

[0011] Preferably, the front support rod is connected with the side wall of the fixed screen through a rotating shaft, the side wall of the fixed screen is provided with a guide groove, and the upper end of the rear support rod is connected with a sliding block matched with the guide groove.

[0012] Preferably, the side wall of the rear support cylinder is connected with a sliding plate for material, and the sliding plate and the rear support cylinder are provided with a reinforcing rod therebetween.

[0013] Preferably, the lower side of the sliding plate is provided with a rear baffle connected with the rear support cylinder.

[0014] Preferably, the side walls of the front and rear support cylinders are both provided with fixing blocks, the fixing blocks are both provided with fixing pins penetrating therethrough, the upper end of the fixing pin is provided with a pressing disc, and the side wall of the fixing pin is connected with a handle.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The movable screen and the fixed screen can realize the screening of sand and stones with different particle sizes, increase the screening range, improve the utilization rate of the device, meet the different screening requirements in the construction, increase the use range of the device, and solve the problems of single size and limited use in the prior art.

[0017] 2. The height of the fixed screen can be adjusted by the support frame, the device can be used for loading vehicles with different heights, the screening speed can be adjusted by adjusting the angle of the screen, and the device is flexible and convenient to use.

[0018] 3. The upper guide plate and the side guide plate can guide the sand and stones, prevent the sand and stones from falling on the vehicle body, avoid damage, and improve the construction safety. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0020] Figure 2 It is a structure schematic view of the fixed screen;

[0021] Figure 3 It is a structure schematic view of the support frame;

[0022] Figure 4 It is the left view of the utility model;

[0023] Figure 5 It is the structural schematic diagram of the movable screen;

[0024] Figure 6 It is the structural schematic diagram after installing the movable screen;

[0025] In the figure: 1-fixed screen; 101-guiding groove; 102-lower guide plate; 103-upper guide plate; 104-side guide plate; 105-bracing rod; 2-support frame; 201-front support rod; 202-positioning hole; 203-positioning bolt; 204-front support cylinder; 205-connecting rod; 206-rear support cylinder; 207-rear baffle; 208-sliding plate; 209-rear support rod; 210-sliding block; 211-strengthening rod; 212-fixed block; 3-fixed pin; 301-pressing disc; 302-handle; 4-movable screen; 401-hanging plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] As shown in Figure 1 A sand and stone screening device for building construction, comprising a support frame 2, the upper end of the support frame 2 is provided with a fixed screen 1, as shown in Figure 2 The lower end of the fixed screen 1 is connected with an inwardly inclined lower guide plate 102, which ensures that the sand and stone can fall into the car hopper, and the upper end of the fixed screen 1 is connected with outwardly inclined side guide plates 104 on both sides, which can increase the material receiving range above, improve the convenience of pouring sand and stone, and prevent sand and stone from falling from both sides of the fixed screen 1, ensuring screening safety.

[0028] In order to be able to screen sand and stone of different particle sizes, as shown in Figure 6 A detachable movable screen 4 is arranged at the upper end of the fixed screen 1, and the movable screen 4 is pressed on the upper end of the fixed screen 1, as shown in Figure 5As shown, the two ends of the movable screen 4 are provided with hanging plates 401 which are hooked on the upper and lower ends of the fixed screen 1, and the two sides of the movable screen 4 are positioned by the side guide plates 104, so as to realize the fixation of the four sides of the movable screen 4. The mesh size of the movable screen 4 is smaller than that of the fixed screen 1, and the number of the movable screen 4 is multiple, and the mesh size of each movable screen 4 is different. When screening, only the movable screen 4 meeting the requirements needs to be replaced, and the movable screen 4 is simple and fast to disassemble and assemble.

[0029] As shown in the figure, Figure 3 The support frame 2 includes parallel front support cylinder 204 and rear support cylinder 206, and the front support cylinder 204 and the rear support cylinder 206 are connected by the connecting rod 205. The upper end of the front support cylinder 204 is inserted with the front support rod 201 supporting the fixed screen 1, and the upper end of the rear support cylinder 206 is inserted with the rear support rod 209 supporting the fixed screen 1. The side walls of the front support cylinder 204 and the rear support cylinder 206 are both provided with positioning bolts 203. The height of the fixed screen 1 can be adjusted by the front support rod 201 and the rear support rod 209, so as to adapt to the transport vehicle of different heights.

[0030] The upper guide plate 103 connected with the side guide plate 104 is arranged at the higher end of the movable screen 4, and the support rod 105 is connected between the upper guide plate 103 and the front support rod 201. The upper guide plate 103 not only can guide the sand and stone, but also can protect the vehicle head, so as to prevent the sand and stone from falling on the vehicle head and ensure the safety.

[0031] In order to ensure the firmness of the support, the positioning holes 202 matched with the positioning bolts 203 are arranged on the side walls of the front support rod 201 and the rear support rod 209.

[0032] The screened materials are generally mixtures of sand, stone, soil and the like. In order to ensure the screening speed, the screen angle needs to be adjusted according to the moisture of the sand and stone. Generally, the larger the screen angle is, the faster the sand and stone slide down. In order to increase the reliability of the device, the front support rod 201 is connected with the side wall of the fixed screen 1 through the rotating shaft, the side wall of the fixed screen 1 is provided with the guide groove 101, and the upper end of the rear support rod 209 is connected with the sliding block 210 matched with the guide groove 101. By adjusting the height of the front support rod 201 and the rear support rod 209, the angle adjustment of the fixed screen 1 can be realized.

[0033] As shown in the figure, Figure 4As shown, the side wall of the rear support cylinder 206 is connected with a material receiving slide plate 208, and a reinforcing rod 211 is arranged between the rear support cylinder 206 and the slide plate 208, and the lower side of the slide plate 208 is provided with a rear baffle 207 connected with the rear support cylinder 206, so that the screened sand and stone can be as far away from the support frame 2 as possible, on the one hand, the convenience of cleaning the sand and stone after screening is improved, and on the other hand, the sand and stone can be prevented from entering the support frame 2, thereby avoiding affecting the entry of the vehicle.

[0034] In order to ensure the stability during use, the side wall of the front support cylinder 204 and the rear support cylinder 206 is provided with a fixing block 212, a fixing pin 3 is arranged through the fixing block 212, the upper end of the fixing pin 3 is provided with a pressing disc 301, the fixing pin 3 is inserted into the soil by using a hammer or the like, and a handle 302 is connected to the side wall of the fixing pin 3, the end of the handle 302 away from the fixing pin 3 is higher than the pressing disc 301, and the fixing pin 3 is taken out of the soil by using a hammer or by hand.

[0035] In the construction, when the sand and stone need to be screened, first, according to the screening requirements, whether to use the fixed screen net or the movable screen net 4 is selected, if the movable screen net 4 is used, the movable screen net 4 meeting the requirements is installed at the upper end of the fixed screen net 1, then, according to the height of the transport vehicle, the height and the angle of the fixed screen net 1 are adjusted to ensure that the lowest point of the lower guide plate 102 is higher than the vehicle hopper, finally, the fixing pin 3 is inserted into the soil to fix the support frame 2. The vehicle is poured into the support frame 2, the vehicle hopper is located below the fixed screen net 1, the sand and stone is poured from the upper side, the sand and stone meeting the requirements is poured into the vehicle hopper, and the sand and stone with oversized size is slid to one side of the support frame 2, thereby realizing the screening of the sand and stone.

[0036] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technologies thereof, the present application also intends to include these modifications and variations.

Claims

1. A sand and gravel screening device for construction, comprising a support frame, the upper end of the support frame is provided with a fixed screen, the lower end of the fixed screen is connected with an inwardly inclined lower guide plate, characterized in that: The upper end of the fixed screen is connected with outwardly inclined side guide plates on both sides, and the upper end of the fixed screen is provided with a detachable movable screen, which is pressed on the upper end of the fixed screen.

2. A sand and aggregate screening apparatus for use in construction work as claimed in claim 1 wherein: The number of the movable screens is multiple, and the mesh size of each movable screen is different.

3. A sand and gravel screening device for use in construction work as defined in claim 1, characterized in that: The higher end of the movable screen is provided with an upper guide plate connected with the side guide plate.

4. A sand and gravel screening apparatus for use in construction work as defined in claim 1, characterized in that: The support frame comprises parallel front and rear support cylinders, and the front and rear support cylinders are connected by a connecting rod.

5. A sand and aggregate screening apparatus for use in construction as claimed in claim 4 wherein: The side wall of the front and rear support cylinders is provided with a positioning bolt.

6. A sand and aggregate screening apparatus for use in construction work as claimed in claim 4 wherein: The side wall of the front and rear support rods is provided with a positioning hole matched with the positioning bolt.

7. A sand and aggregate screening apparatus for use in construction work as claimed in claim 4 wherein: The front support rod is connected with the side wall of the fixed screen through a rotating shaft, and the side wall of the fixed screen is provided with a guide groove.

8. A sand and aggregate screening apparatus for use in construction work as claimed in claim 7 wherein: The upper end of the rear support rod is connected with a sliding block matched with the guide groove.

9. A sand and aggregate screening apparatus for use in construction work as defined in claim 4, characterized in that: The side wall of the rear support cylinder is connected with a sliding plate for receiving materials, and the sliding plate and the rear support cylinder are provided with a reinforcing rod. The lower side of the sliding plate is provided with a rear baffle connected with the rear support cylinder. The side wall of the front and rear support cylinders is provided with a fixing block, and the fixing block is penetrated by a fixing pin. The upper end of the fixing pin is provided with a pressure plate, and the side wall of the fixing pin is connected with a handle.

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