Concrete multi-stage screening automatic feeding system

Abstract

The invention relates to a concrete multi-stage screening automatic feeding system which comprises a grading box, the bottom of the grading box is provided with three storage tanks, the bottoms of the three storage tanks are each provided with a first conveying device, and a second conveying device is arranged among the bottoms of the three first conveying devices; the device comprises a grading box, three mounting boxes are fixedly mounted on the front side wall of the grading box, three screens are movably mounted in the grading box, first motors are fixedly mounted in the three mounting boxes, connecting rods extending into the grading box are fixedly mounted at output shafts of the three first motors, and the connecting rods are movably mounted in the grading box. Top wheels are fixedly mounted on the outer surfaces of the three connecting rods correspondingly, and telescopic rods are fixedly mounted at the two ends of the bottoms of the three screens correspondingly. According to the concrete multi-stage screening automatic feeding system, by arranging the three screens, gravel can be screened for multiple times, and the gravel with different particle sizes enters corresponding areas.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production, in particular to a concrete multi-stage screening automatic feeding system. Background Art

[0002] Concrete is a general term for engineering composite materials that are made by cementing aggregates into a whole. The term concrete usually refers to cement as the cementing material, sand and stone as aggregates, and water (which may contain admixtures and additives) in a certain proportion and mixed together to obtain cement concrete, also known as ordinary concrete.

[0003] Since concrete raw materials have various specifications of sand and gravel before processing, the particles of various particle sizes need to be graded when used. The traditional solution is to use a feeding truck to deliver the graded materials to the factory, and the sand of different specifications are piled on the ground separately. Then, a forklift shovels the sand of different specifications into different silos of the mixing station according to the ratio. This operation method is time-consuming and labor-intensive, affecting the processing progress. Therefore, it is necessary to consider the ability to automatically divide the materials according to the size of the sand and gravel. Therefore, a concrete multi-stage screening automatic feeding system is proposed to solve the above problem. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a concrete multi-stage screening and automatic feeding system with automatic material separation.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a concrete multi-stage screening automatic feeding system, comprising a grading box, wherein three storage tanks are provided at the bottom of the grading box, a conveying device 1 is provided at the bottom of each of the three storage tanks, and a conveying device 2 is provided between the bottoms of the three conveying devices 1;

[0006] Three mounting boxes are fixedly mounted on the front side wall of the grading box, three screens are movably mounted inside the grading box, a motor 1 is fixedly mounted inside each of the three mounting boxes, a connecting rod extending to the interior of the grading box is fixedly mounted on the output shaft of each of the three motors 1, a top wheel is fixedly mounted on the outer surface of each of the three connecting rods, telescopic rods are fixedly mounted at both ends of the bottom of each of the three screens, and a spring 1 is sleeved on the outer surface of each of the six telescopic rods;

[0007] A support frame is fixedly installed between the two ends of the bottom of the three storage tanks, a storage box is fixedly installed at the bottom of the three storage tanks, a motor 2 is fixedly installed inside the three storage boxes, a cam is fixedly installed at the output shaft of the three motors 2, a baffle is movably installed inside the three storage boxes, a guide plate is fixedly installed on one side of the three baffles, a spring 2 is fixedly installed between one side of the three guide plates and the inner wall of the storage box, and a vertical rod is fixedly installed at the bottom of the three guide plates.

[0008] Furthermore, a feed port is provided at the top left end of the grading box, and two partition plates are installed at equal distances inside the grading box, and both partition plates are provided with an opening on one side of the screen, and the three screens are distributed from top to bottom.

[0009] Furthermore, one end of the three connecting rods is rotatably mounted on the inner wall of the grading box, and the three top wheels are all in contact with the bottom of the screen.

[0010] Furthermore, fixed blocks located at the bottom of the telescopic rod are fixedly installed on the left and right inner walls of the grading box and the side walls of the two partition plates, and the six springs are fixedly installed between the fixed blocks and the screen.

[0011] Furthermore, three flow openings are provided at the bottom of the grading box, and the three flow openings are all connected to the interior of the storage tank, and the three screens are all in an inclined structure.

[0012] Furthermore, the outer surfaces of the three baffles are provided with discharge ports, the bottoms of the three storage tanks are fixedly installed with connecting pipes, and the three baffles are in contact with the bottoms of the connecting pipes, and the three discharge ports are adapted to the connecting pipes.

[0013] Furthermore, support rods are fixedly installed on the tops of the three guide plates, and sliders are fixedly installed on the tops of the three support rods. Slide grooves that are compatible with the three sliders are opened on the inner top walls of the three storage boxes.

[0014] Furthermore, a mounting plate located on the outer surface of the baffle is fixedly mounted on the bottom of the three storage tanks, and the three baffles are movably mounted on the mounting plate.

[0015] Furthermore, the three cams are in contact with the outer surface of the vertical rod, and the side walls of the three receiving boxes are each provided with a sliding opening located on the outer surface of the baffle.

[0016] Furthermore, the bottom of each of the three storage tanks corresponds to a conveying device 1, and a concrete mixing station is provided at the end of the conveying device 2.

[0017] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0018] 1. The concrete multi-stage screening automatic feeding system can screen sand and gravel multiple times by setting three screens, and sand and gravel with different particle sizes enter the corresponding area. The interior of the grading box is divided into three areas by the partition plate, and three different types of sand and gravel enter the three areas respectively. Under the action of motor 1, top wheel, telescopic rod and spring 1, the screen can be shaken. Compared with static screening, the screening effect is greatly improved, and the screening efficiency is improved.

[0019] 2. The concrete multi-stage screening automatic feeding system is equipped with three storage tanks to facilitate the classified storage of the three sizes of sand and gravel after screening. By setting a reciprocating baffle at the connecting pipe of each storage tank, the discharge on the baffle can intermittently overlap with the connecting pipe, achieving the purpose of quantitative feeding, so that each type of sand and gravel can be discharged according to the required weight.

[0020] 3. The concrete multi-stage screening automatic feeding system, by setting up conveying device 1 and conveying device 2, can transport the sand and gravel in the three storage tanks to conveying device 2 through conveying device 1, and then convey the sand and gravel to the concrete mixing station through conveying device 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention;

[0023] Figure 3 is a cross-sectional view of the grading box of the present invention;

[0024] Figure 4 is a cross-sectional view from another perspective of the mounting box of the present invention;

[0025] Figure 5 It is a cross-sectional view of the container of the present invention.

[0026] In the figure: 1. Grading box; 101. Installation box; 102. Screen; 103. Motor 1; 104. Connecting rod; 105. Top wheel; 106. Telescopic rod; 107. Spring 1; 2. Storage tank; 201. Support frame; 202. Accommodation box; 203. Motor 2; 204. Cam; 205. Baffle; 206. Guide plate; 207. Spring 2; 208. Vertical rod; 3. Conveying device 1; 4. Conveying device 2; 5. Concrete mixing station. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-5 In this embodiment, a concrete multi-stage screening automatic feeding system includes a grading box 1. Three storage tanks 2 are provided at the bottom of the grading box 1. A conveying device 1 3 is provided at the bottom of each of the three storage tanks 2. A conveying device 2 4 is provided between the bottoms of the three conveying devices 1 3.

[0029] Three mounting boxes 101 are fixedly mounted on the front side wall of the grading box 1, and three screens 102 are movably mounted inside the grading box 1. A motor 103 is fixedly mounted inside each of the three mounting boxes 101, and connecting rods 104 extending to the interior of the grading box 1 are fixedly mounted on the output shafts of the three motors 103. Top wheels 105 are fixedly mounted on the outer surfaces of the three connecting rods 104, and telescopic rods 106 are fixedly mounted on both ends of the bottoms of the three screens 102, and springs 107 are sleeved on the outer surfaces of the six telescopic rods 106.

[0030] Two partition plates are installed at equal distances inside the grading box 1 , dividing the interior of the grading box 1 into three areas through the partition plates. The three areas respectively accommodate sand and gravel of three different diameters.

[0031] Both partition plates are provided with an opening on one side of the screen 102. The three screens 102 are distributed from top to bottom. The aperture sizes of the three screens 102 are different, which is convenient for screening sand and gravel of three different diameters. The sand and gravel intercepted by the screen 102 fall through the opening onto another screen 102, and so on, thereby achieving the purpose of multiple automatic screening of sand and gravel.

[0032] The three top wheels 105 are all in contact with the bottom of the screen 102. Through the continuous rotation of the three top wheels 105, the top wheels 105 are constantly in contact with the bottom of the screen 102, causing the screen 102 to shake, avoiding accumulation on the screen 102, thereby achieving the purpose of speeding up screening.

[0033] A support frame 201 is fixedly installed between the two ends of the bottom of the three storage tanks 2, a storage box 202 is fixedly installed on the bottom of the three storage tanks 2, a motor 203 is fixedly installed inside the three storage boxes 202, a cam 204 is fixedly installed at the output shaft of the three motors 203, a baffle 205 is movably installed inside the three storage boxes 202, a guide plate 206 is fixedly installed on one side of the three baffles 205, a spring 207 is fixedly installed between one side of the three guide plates 206 and the inner wall of the storage box 202, and a vertical rod 208 is fixedly installed on the bottom of the three guide plates 206.

[0034] There are three flow openings at the bottom of the grading box 1, and all three flow openings are connected to the interior of the storage tank 2. By setting the flow openings, three different sizes of sand and gravel can enter the interior of the storage tank 2 for classified storage.

[0035] The outer surfaces of the three baffles 205 are all provided with discharge ports, and the bottoms of the three storage tanks 2 are fixedly installed with connecting pipes, and the three baffles 205 are in contact with the bottoms of the connecting pipes, and the three discharge ports are all adapted to the connecting pipes. Through the cooperation of motor 203, cam 204, guide plate 206 and spring 207, when motor 203 is started, the baffle 205 can be driven to move back and forth left and right, so that the discharge port on the baffle 205 and the connecting pipe reciprocately overlap, and then the sand and gravel in the storage tank 2 fall down when the connecting pipe overlaps with the discharge port.

[0036] The bottom of each of the three storage tanks 2 corresponds to a conveying device 1 3, and a concrete mixing station 5 is provided at the end of the conveying device 2 4. The sand and gravel in the three storage tanks 2 are transported respectively by the three conveying devices 1 3, and then transported to the concrete mixing station 5 by the conveying device 2 4 for mixing and outputting the required model of finished concrete, thereby eliminating the sub-bin of the concrete mixing station 5.

[0037] During implementation, follow these steps:

[0038] 1) Sand and gravel enter the grading box 1 from the feed port. When entering the grading box 1, the sand and gravel are first filtered by the leftmost screen 102. The larger sand and gravel fall through the opening onto the second screen 102 and are screened again. And so on, they fall onto the third screen 102.

[0039] 2) When the sand and gravel fall on the screen 102, the motor 103 drives the connecting rod 104 to rotate, and the connecting rod 104 drives the top wheel 105 to rotate. During the rotation of the top wheel 105, the screen 102 is hit, causing the screen 102 to shake for rapid screening;

[0040] 3) The sand and gravel screened by the three screens 102 fall into the three storage tanks 2 through the circulation port;

[0041] 4) Finally, according to the required sand and gravel size, the corresponding motor 203 at the bottom is started. The motor 203 drives the cam 204 to rotate. During the rotation of the cam 204, it intermittently contacts the vertical rod 208. During the contact, the baffle 205 is driven to move left and right through the guide plate 206. During the movement of the baffle 205, the discharge port is intermittently overlapped. When overlapping, the sand and gravel in the storage tank 2 falls onto the corresponding conveying device 1 3 through the connecting pipe. The conveying device 1 3 conveys the sand and gravel to the conveying device 2 4, and then the conveying device 2 4 conveys it to the concrete mixing station 5.

[0042] In summary, the concrete multi-stage screening automatic feeding system can screen sand and gravel multiple times by setting three screens 102, and sand and gravel with different particle sizes enter the corresponding areas. The interior of the grading box 1 is divided into three areas by the partition plate, and three different types of sand and gravel enter the three areas respectively. Under the action of the motor 103, the top wheel 105, the telescopic rod 106 and the spring 107, the screen 102 can be shaken. Compared with the screening under static conditions, the screening effect is greatly improved, and the screening efficiency is improved.

[0043] Furthermore, by setting up three storage tanks 2, it is convenient to classify and store the three sizes of sand and gravel after screening. By setting a reciprocating baffle 205 at the connecting pipe of each storage tank 2, the discharge on the baffle 205 can intermittently overlap with the connecting pipe, thereby achieving the purpose of quantitative discharge, so that each type of sand and gravel can be discharged according to the required quantity.

[0044] Furthermore, by providing the conveying device 1 3 and the conveying device 2 4 , the sand and gravel in the three storage tanks 2 can be respectively conveyed to the conveying device 2 4 through the conveying device 1 3 , and then the sand and gravel are collectively conveyed to the concrete mixing station 5 through the conveying device 2 4 .

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A concrete multi-stage screening automatic feeding system, comprising a grading box (1), characterized in that: The bottom of the grading box (1) is provided with three storage tanks (2), the bottoms of the three storage tanks (2) are all provided with a conveying device 1 (3), and a conveying device 2 (4) is provided between the bottoms of the three conveying devices 1 (3); Three installation boxes (101) are fixedly installed on the front side wall of the grading box (1), three screens (102) are movably installed inside the grading box (1), a motor (103) is fixedly installed inside the three installation boxes (101), a connecting rod (104) extending to the inside of the grading box (1) is fixedly installed at the output shaft of the three motors (103), a top wheel (105) is fixedly installed on the outer surface of the three connecting rods (104), telescopic rods (106) are fixedly installed at both ends of the bottom of the three screens (102), and a spring (107) is sleeved on the outer surface of the six telescopic rods (106); A support frame (201) is fixedly installed between the two ends of the bottom of the three storage tanks (2), a storage box (202) is fixedly installed at the bottom of the three storage tanks (2), a motor 2 (203) is fixedly installed inside the three storage boxes (202), a cam (204) is fixedly installed at the output shaft of the three motors 2 (203), a baffle (205) is movably installed inside the three storage boxes (202), a guide plate (206) is fixedly installed on one side of the three baffles (205), a spring 2 (207) is fixedly installed between one side of the three guide plates (206) and the inner wall of the storage box (202), and a vertical rod (208) is fixedly installed at the bottom of the three guide plates (206).

2. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: A feed port is provided at the left end of the top of the grading box (1), and two partition plates are installed at equal distances inside the grading box (1), and both of the partition plates are provided with an opening located on one side of the screen (102), and the three screens (102) are distributed in a downward trend.

3. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: One end of the three connecting rods (104) is rotatably mounted on the inner wall of the grading box (1), and the three top wheels (105) are all in contact with the bottom of the screen (102).

4. The concrete multi-stage screening automatic feeding system according to claim 2, characterized in that: The left and right inner walls of the grading box (1) and the side walls of the two partition plates are fixedly mounted with fixed blocks located at the bottom of the telescopic rod (106), and the six springs (107) are fixedly mounted between the fixed blocks and the screen (102).

5. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: The bottom of the grading box (1) is provided with three flow openings, and the three flow openings are all connected to the interior of the storage tank (2), and the three screens (102) are all in an inclined structure.

6. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: The outer surfaces of the three baffles (205) are each provided with a discharge port, the bottoms of the three storage tanks (2) are each fixedly mounted with a connecting pipe, and the three baffles (205) are each in contact with the bottom of the connecting pipe, and the three discharge ports are each adapted to the connecting pipe.

7. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: The tops of the three guide plates (206) are all fixedly mounted with support rods, and the tops of the three support rods are all fixedly mounted with sliders, and the inner top walls of the three accommodating boxes (202) are all provided with sliding grooves adapted to the three sliders.

8. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: A mounting plate located on the outer surface of the baffle (205) is fixedly mounted on the bottom of each of the three storage tanks (2), and each of the three baffles (205) is movably mounted on the mounting plate.

9. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: The three cams (204) are all in contact with the outer surface of the vertical rod (208), and the side walls of the three receiving boxes (202) are all provided with a sliding opening located on the outer surface of the baffle (205).

10. The concrete multi-stage screening automatic feeding system according to claim 1, characterized in that: The bottom of each of the three storage tanks (2) corresponds to a conveying device 1 (3), and a concrete mixing station (5) is provided at the end of the conveying device 2 (4).

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