Screening and grinding integrated device for concrete recycled aggregate

Abstract

The utility model discloses a screening and grinding integrated device for concrete recycled aggregate, and relates to the technical field of screening and grinding of concrete aggregate. The grinding device comprises a grinding mechanism and a working box, a backflow mechanism is arranged on the left side of the grinding mechanism, and a positioning block is fixedly connected to the inner wall of the working box. Through the arrangement of the grinding wheel, crushed materials can move downwards through a filter plate, fall onto a positioning block and continue to move downwards, some materials with proper sizes can reach the position between the positioning block and the grinding wheel, then a first motor is started to drive a rotating shaft to rotate, the grinding wheel is rotated through rotation of the rotating shaft, and the grinding wheel is driven to rotate; due to the fact that the distance between the grinding wheel and the positioning block is large in the upper portion and small in the lower portion, the materials can be gradually ground into dust, and when the materials are ground into powder, the materials can be gradually reduced and fall down at the same time, it is guaranteed that the materials can make contact with the grinding wheel all the time during grinding, and particles caused by incomplete grinding of the materials are prevented.

Description

Technical Field

[0001] This utility model belongs to the field of screening and grinding technology of concrete aggregates, and in particular relates to an integrated device for screening and grinding recycled concrete aggregates. Background Technology

[0002] Recycled concrete refers to new concrete made by crushing, cleaning and grading waste concrete blocks, mixing them with graded aggregates in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement and water.

[0003] During processing, because the distance between the grinding devices is fixed, some smaller material particles may appear during the grinding process. Since the material is too small, the device cannot perform secondary grinding, and manual separation is required. Therefore, we provide an integrated screening and grinding device for recycled concrete aggregate. Utility Model Content

[0004] The purpose of this invention is to provide an integrated screening and grinding device for recycled concrete aggregates. Because the distance between the grinding wheel and the positioning block is wider at the top and narrower at the bottom, the material is gradually ground into dust. As the material is ground into powder, it gradually becomes smaller and falls downwards, ensuring that the material remains in contact with the grinding wheel during grinding. This prevents incomplete grinding and the formation of particles. It solves the problem that existing grinding devices with fixed distances may produce some small material particles during grinding, which are too small for secondary grinding and require manual separation.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an integrated screening and grinding device for recycled concrete aggregate, comprising a grinding mechanism and a working box. A reversing mechanism is provided on the left side of the grinding mechanism. A positioning block is fixedly connected to the inner wall of the working box, and a filter plate is fixedly connected to the inner wall of the working box. A motor is fixedly connected to the bottom of the filter plate. A rotating shaft is fixedly connected to the bottom output end of the motor via a coupling. A grinding wheel is fixedly connected to the bottom of the rotating shaft. A collection box is slidably connected inside the working box. A flow groove is formed inside the positioning block. A feed inlet is fixedly connected to the right side of the working box, and a baffle is rotatably connected inside the feed inlet. The distance between the grinding wheel and the positioning block is wider at the top and narrower at the bottom, so the material is gradually ground into dust. As the material is ground into powder, it gradually becomes smaller and falls downwards, ensuring that the material remains in contact with the grinding wheel during grinding and preventing incomplete grinding and the formation of particles.

[0007] Furthermore, a limiting groove is provided on the inner wall of the work box, and a moving block is slidably connected to the inner wall of the limiting groove. The front of the moving block penetrates through the work box and extends to the outer surface. A cleaning block is fixedly connected to the top of the moving block, and a push rod is fixedly connected to the front of the moving block. A pouring groove is provided inside the positioning block. The cleaning block is used to clean the material remaining at the bottom of the extrusion plate.

[0008] Furthermore, the reversing mechanism includes a conveyor box fixedly connected to the left side of the working box. A second motor is fixedly connected to the top of the working box. A rotating rod is fixedly connected to the top output end of the second motor via a coupling. The bottom of the rotating rod passes through the conveyor box and extends into the interior. A portion of the defective material is fed into the bottom of the extrusion plate through the conveyor box.

[0009] Furthermore, a conveying blade is fixedly connected to the outer surface of the rotating rod, and a repeating opening is provided at the bottom of the conveying box. The repeating opening extends through the conveying box on the right side and into the working box.

[0010] Furthermore, the top of the conveyor box has an outlet, the right side of which passes through the conveyor box and extends into the working box. An extrusion rod is fixedly connected inside the working box, and an extrusion plate is fixedly connected to the bottom output end of the extrusion rod. The bottom of the extrusion plate passes through the working box and extends into the interior. Large pieces of material are crushed by the extrusion plate.

[0011] Furthermore, a stop block is fixedly connected to the top of the extrusion plate, a slider is fixedly connected to the left side of the extrusion plate, a spring is fixedly connected to the inner wall of the slider, a protrusion is fixedly connected to the end of the spring away from the slider, a support rod is slidably connected to the outer surface of the slider, a groove is formed inside the support rod, the inner wall of the groove is adapted to the outer surface of the protrusion, an extension block is fixedly connected to the bottom of the support rod, a blocking block is fixedly connected to the left side of the extension block, the outer surface of the blocking block is slidably connected to the inner wall of the working box, and the outer surface of the blocking block is adapted to the inner wall of the discharge port. The blocking block closes the discharge port downwards to prevent the material from being discharged onto the top of the extrusion plate when the extrusion plate is crushed downwards, thus preventing the extrusion plate from being properly recycled and causing damage to the extrusion rod.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, by setting up a grinding wheel, crushes the material at the top of the filter plate when the extrusion plate moves downward. The crushed material moves downward through the filter plate, falls onto the positioning block, and continues to move downward. Some appropriately sized materials will reach between the positioning block and the grinding wheel. Then, motor one is started, which drives the rotating shaft to rotate. The rotation of the rotating shaft rotates the grinding wheel. Since the distance between the grinding wheel and the positioning block is larger at the top and smaller at the bottom, the material will be gradually ground into dust. As the material is ground into powder, it will gradually become smaller and fall downward, ensuring that the material can always be in contact with the grinding wheel during grinding, preventing incomplete grinding and the formation of particles.

[0014] 2. This utility model, by setting up a conveyor box, allows some unqualified materials to enter the repeating port along the flow channel during grinding, and then enter the conveyor box through the repeating port. Then, the second motor is started, which drives the rotating rod to rotate. The rotating rod drives the conveying blade to rotate, and then the material inside the conveyor box is conveyed upward through the rotating conveying blade and discharged back into the filter plate through the discharge port for screening. The unqualified materials are then crushed again.

[0015] 3. This utility model, by setting a blocking block, will drive the slider to move when the extrusion plate moves downward to crush. Since the slider has protrusions on both sides that are inserted into the grooves inside the support rod, the support rod will move downward at the same time when the slider moves downward. When the support rod moves downward, it will drive the extension block to move. Then, the extension block will drive the blocking block to move. The blocking block will then close the discharge port downward, preventing the material from being discharged onto the top of the extrusion plate when the extrusion plate is crushing downward, which would prevent the extrusion plate from being properly recycled and cause damage to the extrusion rod.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front sectional view of the working box of this utility model;

[0020] Figure 3This utility model Figure 2 A magnified structural diagram of A in the middle;

[0021] Figure 4 This is a schematic diagram of the top structure of the filter plate of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the top of the work box of this utility model.

[0023] Figure 6 This utility model Figure 2 Enlarged structural diagram of B in the middle

[0024] Figure 7 This is a schematic cross-sectional view of the left side of the slider of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Grinding Mechanism; 101. Working Box; 102. Positioning Block; 103. Collection Box; 104. Grinding Wheel; 105. Motor 1; 106. Rotating Shaft; 107. Flow Channel; 108. Pouring Channel; 109. Filter Plate; 110. Feed Inlet; 111. Limiting Channel; 112. Moving Block; 113. Cleaning Block; 114. Push Rod; 115. Baffle; 2. Reverse Flow Mechanism; 201. Conveying Box; 202. Motor 2; 203. Rotating Rod; 204. Conveying Leaf; 205. Discharge Outlet; 206. Extrusion Rod; 207. Extrusion Plate; 208. Repeating Inlet; 209. Stop Block; 210. Blocking Block; 211. Extension Block; 212. Support Rod; 213. Slider; 214. Spring; 215. Protrusion; 216. Groove. Detailed Implementation

[0027] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7As shown, this utility model is an integrated screening and grinding device for recycled concrete aggregate, including a grinding mechanism 1 and a working box 101. A backflow mechanism 2 is provided on the left side of the grinding mechanism 1. A positioning block 102 is fixedly connected to the inner wall of the working box 101. A filter plate 109 is fixedly connected to the inner wall of the working box 101. A motor 105 is fixedly connected to the bottom of the filter plate 109. A rotating shaft 106 is fixedly connected to the bottom output end of the motor 105 via a coupling. A grinding wheel 104 is fixedly connected to the bottom of the rotating shaft 106. A collection box 103 is slidably connected inside the working box 101. A flow groove 107 is opened inside the positioning block 102. A feed inlet 110 is fixedly connected to the right side of the working box 101. A baffle 115 and an extrusion plate 2 are rotatably connected inside the feed inlet 110. When the filter plate 109 moves downward, the material at the top of the filter plate 109 will be crushed. The crushed material will move downward through the filter plate 109 and fall onto the positioning block 102. It will continue to move downward. Some appropriately sized material will reach between the positioning block 102 and the grinding wheel 104. Then, the motor 105 is started. The motor 105 drives the rotating shaft 106 to rotate. The rotation of the rotating shaft 106 rotates the grinding wheel 104. Since the distance between the grinding wheel 104 and the positioning block 102 is larger at the top and smaller at the bottom, the material will be gradually ground into dust. As the material is ground into powder, it will gradually become smaller and fall downward. This ensures that the material can always be in contact with the grinding wheel 104 during grinding, preventing incomplete grinding and the formation of particles.

[0029] A limiting groove 111 is provided on the inner wall of the work box 101, and a moving block 112 is slidably connected to the inner wall of the limiting groove 111.

[0030] The front of the movable block 112 penetrates through the work box 101 and extends to the outer surface. A cleaning block 113 is fixedly connected to the top of the movable block 112. A push rod 114 is fixedly connected to the front of the movable block 112. A pouring groove 108 is opened inside the positioning block 102.

[0031] The reversing mechanism 2 includes a conveyor box 201 fixedly connected to the left side of the work box 101, and a motor 202 fixedly connected to the top of the work box 101.

[0032] The top output end of motor 202 is fixedly connected to a rotating rod 203 via a coupling. The bottom of the rotating rod 203 passes through the conveyor box 201 and extends into it.

[0033] A conveying blade 204 is fixedly connected to the outer surface of the rotating rod 203. A repeating port 208 is opened at the bottom of the conveying box 201. The repeating port 208 extends through the conveying box 201 and into the working box 101 on the right side. During grinding, some unqualified materials will enter the repeating port 208 along the flow channel 107, and then enter the conveying box 201 through the repeating port 208. Then, the second motor 202 is started, which drives the rotating rod 203 to rotate. The rotation of the rotating rod 203 drives the conveying blade 204 to rotate. Then, the rotation of the conveying blade 204 transports the material that has entered the conveying box 201 upward and discharges it back into the filter plate 109 through the discharge port 205 for re-crushing.

[0034] The top of the conveyor box 201 has an outlet 205. The outlet 205 extends through the conveyor box 201 on the right and into the working box 101. An extrusion rod 206 is fixedly connected inside the working box 101.

[0035] An extrusion plate 207 is fixedly connected to the bottom output end of the extrusion rod 206. The bottom of the extrusion plate 207 passes through the working box 101 and extends into the interior.

[0036] A stop block 209 is fixedly connected to the top of the extrusion plate 207. A slider 213 is fixedly connected to the left side of the extrusion plate 207. A spring 214 is fixedly connected to the inner wall of the slider 213. A protrusion 215 is fixedly connected to the end of the spring 214 away from the slider 213. A support rod 212 is slidably connected to the outer surface of the slider 213. A groove 216 is opened inside the support rod 212. The inner wall of the groove 216 is adapted to the outer surface of the protrusion 215. An extension block 211 is fixedly connected to the bottom of the support rod 212. A blocking block 210 is fixedly connected to the left side of the extension block 211. The outer surface of the blocking block 210 is slidably connected to the inner wall of the work box 101. The outer surface of the blocking block 210 is adapted to the inner wall of the discharge port 205.

[0037] A specific application of this embodiment is as follows: The operator first places the device in the designated position, then the material to be ground enters the working chamber 101 through the feed inlet 110 and falls onto the filter plate 109. Then, the extrusion rod 206 is activated, pushing the extrusion plate 207 downwards. As the extrusion plate 207 moves downwards, it crushes the material at the top of the filter plate 109. The crushed material moves downwards through the filter plate 109, falls onto the positioning block 102, and continues to move downwards. Some appropriately sized material reaches between the positioning block 102 and the grinding wheel 104. Then, the motor 105 is activated, driving the rotating shaft 106 to rotate. The rotation of the rotating shaft 106 rotates the grinding wheel 104. Since the distance between the grinding wheel 104 and the positioning block 102 is... The material is gradually ground into dust as it is ground into smaller particles. This ensures that the material remains in contact with the grinding wheel 104 during grinding, preventing incomplete grinding and particle formation. During grinding, some substandard material flows along the flow channel 107 into the pouring channel 108, then through the pouring channel 108 into the repeating port 208, and then through the repeating port 208 into the conveying box 201. Then, the second motor 202 is started, which drives the rotating rod 203 to rotate. The rotating rod 203 drives the conveying blade 204 to rotate, and then the rotating blade 204 conveys the material inside the conveying box 201 upwards and discharges it back onto the filter plate 109 through the discharge port 205 for further grinding.

[0038] When the extrusion plate 207 moves downward to crush, it drives the slider 213 to move. Since the slider 213 has protrusions 215 on both sides that are engaged in the grooves 216 inside the support rod 212, the downward movement of the slider 213 simultaneously drives the support rod 212 downward. This downward movement of the support rod 212 then drives the extension block 211 to move, which in turn drives the blocking block 210 to move downward, sealing the discharge port 205. This prevents material from being discharged onto the top of the extrusion plate 207 when it is crushing downward, thus ensuring proper crushing. The pressure plate 207 cannot be retracted properly, causing damage to the extrusion rod 206. After the blocking block 210 closes the outlet 205, the blocking block 210 cannot move. Since the protrusion 215 is spherically shaped and matches the groove 216, when the blocking block 210 cannot move, the extension block 211 and the support rod 212 will also be unable to move. At this time, the slider 213 will continue to move downward, so the protrusion 215 will disengage from the groove 216. When the extrusion plate 207 is retracted, the protrusion 215 will re-engage with the groove 216 and simultaneously drive the support rod 212 to move, thereby reopening the outlet 205.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A screening and grinding integrated device for recycled concrete aggregate, comprising a grinding mechanism (1) and a working box (101), wherein a backflow mechanism (2) is provided on the left side of the grinding mechanism (1), and a positioning block (102) is fixedly connected to the inner wall of the working box (101), characterized in that: A filter plate (109) is fixedly connected to the inner wall of the working box (101). A motor (105) is fixedly connected to the bottom of the filter plate (109). A rotating shaft (106) is fixedly connected to the bottom output end of the motor (105) via a coupling. A grinding wheel (104) is fixedly connected to the bottom of the rotating shaft (106). A collection box (103) is slidably connected inside the working box (101). A flow groove (107) is opened inside the positioning block (102). A feed inlet (110) is fixedly connected to the right side of the working box (101). A baffle (115) is rotatably connected inside the feed inlet (110).

2. The integrated screening and grinding device for recycled concrete aggregate according to claim 1, characterized in that, The inner wall of the work box (101) is provided with a limiting groove (111), and a moving block (112) is slidably connected to the inner wall of the limiting groove (111).

3. The integrated screening and grinding device for recycled concrete aggregate according to claim 2, characterized in that, The moving block (112) extends through the work box (101) and outwards. A cleaning block (113) is fixedly connected to the top of the moving block (112). A push rod (114) is fixedly connected to the front of the moving block (112). A pouring groove (108) is opened inside the positioning block (102).

4. The integrated screening and grinding device for recycled concrete aggregate according to claim 1, characterized in that, The reversing mechanism (2) includes a conveyor box (201) fixedly connected to the left side of the work box (101), and a motor (202) is fixedly connected to the top of the work box (101).

5. The integrated screening and grinding device for recycled concrete aggregate according to claim 4, characterized in that, The top output end of the second motor (202) is fixedly connected to a rotating rod (203) via a coupling. The bottom of the rotating rod (203) passes through the conveyor box (201) and extends into the interior.

6. The integrated screening and grinding device for recycled concrete aggregate according to claim 5, characterized in that, The outer surface of the rotating rod (203) is fixedly connected to a conveying blade (204), and the bottom of the conveying box (201) is provided with a repeating port (208). The repeating port (208) extends through the conveying box (201) on the right side and extends into the working box (101).

7. The integrated screening and grinding device for recycled concrete aggregate according to claim 6, characterized in that, The top of the conveying box (201) is provided with an outlet (205), the outlet (205) extends through the conveying box (201) on the right side and extends into the working box (101), and an extrusion rod (206) is fixedly connected inside the working box (101).

8. The integrated screening and grinding device for recycled concrete aggregate according to claim 7, characterized in that, The bottom output end of the extrusion rod (206) is fixedly connected to an extrusion plate (207), the bottom of which penetrates the working box (101) and extends into the interior.

9. The integrated screening and grinding device for recycled concrete aggregate according to claim 8, characterized in that, A stop block (209) is fixedly connected to the top of the extrusion plate (207). A slider (213) is fixedly connected to the left side of the extrusion plate (207). A spring (214) is fixedly connected to the inner wall of the slider (213). A protrusion (215) is fixedly connected to the end of the spring (214) away from the slider (213). A support rod (212) is slidably connected to the outer surface of the slider (213). A groove (216) is provided inside the support rod (212). The inner wall of the groove (216) is adapted to the outer surface of the protrusion (215). An extension block (211) is fixedly connected to the bottom of the support rod (212). A blocking block (210) is fixedly connected to the left side of the extension block (211). The outer surface of the blocking block (210) is slidably connected to the inner wall of the work box (101). The outer surface of the blocking block (210) is adapted to the inner wall of the outlet (205).

Images