Screening device for concrete raw materials

Abstract

The utility model relates to the technical field of concrete processing, and particularly discloses a concrete raw material screening device which comprises a box body, the box body is of a hollow cuboid structure, three square through holes are formed in the surface of one side of the box body, a feeding hopper is arranged on the upper surface of the box body in a penetrating mode, and a discharging pipe is arranged on the lower surface of the box body in a penetrating mode. A multi-layer screening structure is arranged in the box body, and the multi-layer screening structure achieves the multi-stage screening process of concrete raw materials through a plurality of screens of different specifications. According to the screening device for the concrete raw materials, the three filtering cavities and the screen meshes are arranged in the box body from top to bottom, the specifications of the three screen meshes are sequentially reduced, and after the concrete raw materials enter the box body from the feeding hopper, the three screen meshes of different specifications can be used for screening components of different sizes in the concrete raw materials at the same time; and the screening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete processing technology, specifically to a screening device for concrete raw materials. Background Technology

[0002] Concrete is made from a mixture of various raw materials such as cement, sand, water and admixtures. Among them, the particle size distribution and impurity content of aggregates such as sand and gravel have a significant impact on the performance of concrete. Therefore, in order to ensure the performance of concrete, it is necessary to screen the concrete raw materials to ensure that their particle size meets the requirements.

[0003] Currently, in the screening process of concrete raw materials, a single-layer filter screen is usually set up to screen the raw materials. However, a single-layer filter screen is not good at distinguishing components of different particle sizes in concrete raw materials. Multiple screening steps are required to accurately screen the components of each particle size in concrete raw materials, which affects the screening efficiency of concrete raw materials. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for concrete raw materials. This device is equipped with multiple parallel screening mechanisms to simultaneously screen components of different particle sizes in concrete raw materials, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screening device for concrete raw materials, comprising a box body, the box body being a hollow cuboid structure, three square through holes provided on one side surface of the box body, a feed hopper penetrating through the upper surface of the box body, a discharge pipe penetrating through the lower surface of the box body, and a multi-layer screening structure provided inside the box body, the multi-layer screening structure realizing a multi-stage screening process for concrete raw materials through multiple screens of different specifications.

[0006] Preferably, the multi-layer screening structure includes a guide rail, which is fixedly installed on the inner wall of the box, and one end of the guide rail is flush with the surface of the square through hole on one side of the box. The upper surface of the guide rail is slidably engaged with the protrusion on the lower surface of the filter chamber. The filter chamber is the same size as the square through hole on the side surface of the box. The filter chamber is a box-shaped structure with an open upper surface. A connecting block is fixedly installed on one side surface of the filter chamber. The connecting block is an L-shaped structure. The connecting block is detachably connected to the outer surface of the box by bolts.

[0007] By adopting the above technical solution, a multi-layer screening structure can be used to perform a simultaneous multi-stage screening process on concrete raw materials.

[0008] Preferably, the lower surface of the filter chamber is provided with a circular screen, and the outer surface of the screen is provided with an inverted conical feeding block that is fixedly connected to the inner wall of the filter chamber. There are three filter chambers, which are respectively aligned with the three square through holes of the box body, and the filter chambers are arranged in parallel from top to bottom on the surface of the box body. The screens provided on the lower surface of the three filter chambers have decreasing sizes from top to bottom.

[0009] By adopting the above technical solution, three screens with successively decreasing specifications can be used to simultaneously screen different particle size components in concrete raw materials.

[0010] Preferably, a locking structure is provided on one side of the filter chamber. The locking structure is connected by a locking block and a locking groove to prevent the filter chamber from shifting inside the housing.

[0011] By adopting the above technical solution, the interlocking structure can prevent the filter chamber from shifting inside the housing.

[0012] Preferably, the engaging structure includes a locking block, which is fixedly installed on one side surface of the filter chamber. The locking block engages and matches with a locking slot, which is fixedly installed on the inner wall of the housing. Inclined plates are symmetrically arranged on the inner wall of the housing, and the ends of the inclined plates are aligned with the upper surface of the filter chamber. A set of inclined plates is provided above each filter chamber.

[0013] By employing the above technical solution, the engagement between the card block and the card slot can prevent the filter chamber from shifting.

[0014] Preferably, the surface of the box is provided with a vibration structure, which vibrates multiple screens through the overall movement of the box, facilitating the screening of concrete raw materials.

[0015] By adopting the above technical solution, the vibration of multiple screens can be achieved using a vibrating structure.

[0016] Preferably, the vibration structure includes a mounting frame disposed on the outer surface of the housing. The mounting frame is a structure of two support plates connected by a base plate. A connecting rod is disposed on the outer surface of the housing, and the other end of the connecting rod is connected to the inner surface of the mounting frame. The connecting rod is a telescopic structure. A spring is disposed on the outer surface of the connecting rod, one end of the spring is connected to the surface of the housing, and the other end of the spring is connected to the mounting frame. Connecting rods and springs are symmetrically disposed on both sides of the housing. A motor is fixedly mounted on the surface of the mounting frame, and an eccentric wheel is fixedly connected to the output end of the motor. The eccentric wheel penetrates the surface of the mounting frame and contacts one side surface of the housing.

[0017] By adopting the above technical solution, the vibration of the box can drive the vibration of the filter chamber, thereby increasing the screening efficiency of the raw materials.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the concrete raw material screening device:

[0019] 1. This device has three filter chambers and screens arranged from top to bottom inside the box. The size of the three screens decreases sequentially. When concrete raw materials enter the box from the feed hopper, the three screens of different sizes can be used to screen different components of different sizes in the concrete raw materials at the same time, increasing the screening efficiency.

[0020] 2. The filter chamber and the housing in this device are slidably engaged and fixed with bolts. When the screen needs to be cleaned or replaced, the screen can be pulled out by pulling out the filter chamber. This facilitates the discharge of the screened concrete raw materials and reduces the maintenance difficulty and cost of the screen in the device.

[0021] 3. In this device, the box is mounted on the surface of the mounting frame using a telescopic connecting rod and spring, and a motor and eccentric wheel are installed to make the box vibrate on the surface of the mounting frame. The vibrating box can synchronously drive the three screens to vibrate, increasing the efficiency of the concrete raw material screening process. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0024] Figure 3 This is a schematic diagram of the sliding structure of the filter chamber of this utility model;

[0025] Figure 4 This is a side sectional view of the connection between the housing and the filter chamber of this utility model;

[0026] Figure 5 This is a schematic diagram of the filter chamber structure of this utility model;

[0027] Figure 6 This is a side sectional view of the box structure of this utility model.

[0028] In the diagram: 1. Box body; 2. Feed hopper; 3. Discharge pipe; 4. Guide rail; 5. Filter chamber; 6. Connecting block; 7. Screen; 8. Locking block; 9. Locking groove; 10. Inclined plate; 11. Mounting bracket; 12. Connecting rod; 13. Spring; 14. Motor; 15. Eccentric wheel. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-6 This utility model provides a technical solution: a screening device for concrete raw materials, including a box 1, a feeding hopper 2, a discharge pipe 3, a guide rail 4, a filter chamber 5, a connecting block 6, a screen 7, a clamping block 8, a clamping groove 9, an inclined plate 10, a mounting frame 11, a connecting rod 12, a spring 13, a motor 14, and an eccentric wheel 15.

[0031] The box 1 is a hollow cuboid structure. Three square through holes are provided on one side surface of the box 1. A feed hopper 2 is installed through the upper surface of the box 1, and a discharge pipe 3 is installed through the lower surface of the box 1. The box 1 has a multi-layer screening structure inside, which uses multiple screens 7 of different specifications to achieve multi-stage screening of concrete raw materials. The multi-layer screening structure includes a guide rail 4, which is fixedly installed on the inner wall of the box 1. One end of the guide rail 4 is flush with the surface of the square through holes on one side of the box 1. The upper surface of the guide rail 4 slides and engages with the protrusions on the lower surface of the filter chamber 5. The filter chamber 5 is the same size as the square through holes on the side surface of the box 1. The filter chamber 5 is a box-shaped structure with an open upper surface. A connecting block 6 is fixedly installed on one side surface of the filter chamber 5. The connecting block 6 has an L-shaped structure and is detachably connected to the outer surface of the box 1 by bolts. The lower surface of the filter chamber 5... A circular screen 7 is provided, and an inverted conical feeding block is provided on the outer surface of the screen 7 and is fixedly connected to the inner wall of the filter chamber 5. There are 3 filter chambers 5, which are respectively aligned with the three square through holes of the box body 1. The filter chambers 5 are arranged parallel from top to bottom on the surface of the box body 1. The screens 7 on the lower surface of the 3 filter chambers 5 decrease in size from top to bottom. A locking structure is provided on one side of the filter chamber 5. The locking structure is connected by a locking block 8 and a locking groove 9 to prevent the filter chamber 5 from shifting inside the box body 1. The locking structure includes a locking block 8, which is fixedly installed on one side surface of the filter chamber 5. The locking block 8 is matched with the locking groove 9, which is fixedly installed on the inner wall of the box body 1. Inclined plates 10 are symmetrically arranged on the inner wall of the box body 1. The end of the inclined plate 10 is aligned with the upper surface of the filter chamber 5. A set of inclined plates 10 is provided above each filter chamber 5.

[0032] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, when using this device to screen concrete raw materials, one end of the locking block 8 of the filter chamber 5 is inserted into the square through hole on one side of the box body 1, so that the protrusion on the lower surface of the filter chamber 5 is inserted into the interior of the guide rail 4, and the filter chamber 5 slides into the interior of the box body 1 until the locking block 8 engages with the locking groove 9. At this time, the L-shaped connecting block 6 engages with the outer surface of the box body 1. The box body 1 is connected to the connecting block 6 with bolts. At this time, the filter chamber 5 is fixed inside the box body 1. The three filter chambers 5 are inserted into the box body 1 in sequence according to the different specifications of the screen 7 on the surface. Inside the box body 1, a structure with decreasing screen 7 specifications is formed from top to bottom. The concrete raw materials to be screened are fed into the feed hopper 2. The concrete raw materials fall into the first filter chamber 5 through the inclined plate 10 and are screened once under the action of the screen 7. Similarly, the concrete raw materials pass through the two filter chambers 5 below in sequence and are screened multiple times under the action of the screen 7, thereby realizing the multi-stage screening process of the concrete raw materials at the same time.

[0033] The surface of the box 1 is provided with a vibration structure. The vibration structure realizes the vibration of multiple screens 7 through the overall movement of the box 1, which facilitates the screening of concrete raw materials. The vibration structure includes a mounting frame 11, which is set on the outer surface of the box 1. The mounting frame 11 is a structure of two support plates connected by a base plate. A connecting rod 12 is provided on the outer surface of the box 1. The other end of the connecting rod 12 is connected to the inner surface of the mounting frame 11. The connecting rod 12 is a telescopic structure. A spring 13 is provided on the outer surface of the connecting rod 12. One end of the spring 13 is connected to the surface of the box 1, and the other end of the spring 13 is connected to the mounting frame 11. The connecting rod 12 and the spring 13 are symmetrically arranged on both sides of the box 1. A motor 14 is fixedly installed on the surface of the mounting frame 11. An eccentric wheel 15 is fixedly connected to the output end of the motor 14. The eccentric wheel 15 passes through the surface of the mounting frame 11 and contacts one side of the surface of the box 1.

[0034] like Figure 1 and Figure 2 As shown, during the screening process, the motor 14 is started, and the motor 14 drives the eccentric wheel 15 to rotate. The rotating eccentric wheel 15 pushes the box 1 to one side. The box 1 drives the connecting rods 12 on both sides to extend and retract respectively, and at the same time drives the spring 13 to stretch and compress. When the box 1 loses the thrust of the eccentric wheel 15, it returns to its original position under the action of the springs 13 on both sides. Under the action of the continuously rotating eccentric wheel 15, the box 1 vibrates. The vibrating box 1 drives the internal screen 7 to vibrate, increasing the screening efficiency of concrete raw materials.

[0035] Working principle: When using this concrete raw material screening device, the filter chamber 5 is inserted into the inside of the box 1, so that the locking block 8 engages with the locking groove 9, and the connecting block 6 is engaged with the outer surface of the box 1 using bolts. The three filter chambers 5 form a structure with decreasing screen size 7 from top to bottom inside the box 1. The motor 14 is started, and the motor 14 drives the eccentric wheel 15 to rotate. The rotating eccentric wheel 15, connecting rod 12 and spring 13 can realize the vibration of the box 1. The vibrating box 1 drives the internal screen 7 to vibrate, and the concrete raw material is fed from the feed hopper 2. The concrete raw material passes through the action of multiple vibrating screens 7 to realize the multi-stage screening process of the concrete raw material, increase the screening efficiency of the concrete raw material, and increase the overall practicality.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screening device for concrete raw materials, comprising a box (1), the box (1) is a hollow cuboid structure, one side surface of the box (1) is provided with three square through holes, the upper surface of the box (1) is provided with a feeding hopper (2) penetratingly, the lower surface of the box (1) is provided with a discharging pipe (3) penetratingly, characterized in that: The inside of the box (1) is provided with a multi-layer screening structure, which realizes a multi-stage screening process of the concrete raw materials through a plurality of different specifications of the screen (7). The surface of the box (1) is provided with a vibration structure, which realizes the vibration of the plurality of screens (7) through the overall movement of the box (1), so as to facilitate the screening of the concrete raw materials. The vibration structure comprises a mounting frame (11), which is arranged on the outer surface of the box (1). The mounting frame (11) is a structure of two support plates connected by a bottom plate. The outer surface of the box (1) is provided with a connecting rod (12), one end of which is connected with the inner surface of the mounting frame (11). The connecting rod (12) is a telescopic structure. The outer surface of the connecting rod (12) is provided with a spring (13), one end of which is connected with the surface of the box (1), and the other end of which is connected with the mounting frame (11). The connecting rod (12) and the spring (13) are symmetrically arranged on the two side surfaces of the box (1). A motor (14) is fixedly installed on the surface of the mounting frame (11). The output end of the motor (14) is fixedly connected with an eccentric wheel (15). The eccentric wheel (15) penetrates through the surface of the mounting frame (11) and is in contact with one side surface of the box (1).

2. A screening device for raw materials for concrete according to claim 1, characterized in that: The multi-layer screening structure comprises a guide rail (4), which is fixedly installed on the inner wall of the box (1) and flush with the surface of the square through hole on one side of the box (1). The upper surface of the guide rail (4) is slidably connected with the convex strips on the lower surface of the filter cavity (5). The filter cavity (5) is equal in size to the square through hole arranged on the side surface of the box (1). The filter cavity (5) is a box-shaped structure with an open upper surface. A connecting block (6) is fixedly installed on one side surface of the filter cavity (5). The connecting block (6) is an L-shaped structure. The connecting block (6) and the outer surface of the box (1) are detachably connected through bolts.

3. A screening apparatus for raw concrete materials as claimed in claim 2, wherein: The lower surface of the filter cavity (5) is provided with a circular screen (7). The outer surface of the screen (7) is provided with an inverted conical feeding block, which is fixedly connected with the inner wall of the filter cavity (5). The filter cavity (5) is provided with three filter cavities (5), which are respectively arranged in alignment with the three square through holes of the box (1). The filter cavities (5) are arranged in parallel from top to bottom on the surface of the box (1). The specifications of the screens (7) arranged on the lower surfaces of the three filter cavities (5) decrease from top to bottom.

4. A screening apparatus for raw concrete materials as claimed in claim 2, wherein: One side of the filter cavity (5) is provided with a clamping structure, which is connected through the clamping connection between the clamping block (8) and the clamping groove (9), so as to avoid the displacement of the filter cavity (5) in the box (1).

5. A screening apparatus for raw concrete materials as claimed in claim 4 wherein: The engaging structure comprises a clamping block (8) fixedly installed on one side surface of the filtering cavity (5), the clamping block (8) is engaged and matched with a clamping groove (9) fixedly installed on the inner wall of the box body (1), the inner wall of the box body (1) is symmetrically provided with an inclined plate (10), the end of the inclined plate (10) is aligned with the upper surface of the filtering cavity (5), and a group of inclined plates (10) are arranged above each filtering cavity (5).

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