Screening device for concrete raw materials

Abstract

The utility model relates to the technical field of screening devices, and discloses a concrete raw material screening device which comprises a fixing frame, a screening box is fixedly connected to the upper portion of the fixing frame, a connecting frame is fixedly connected to one end of the fixing frame, and a crushing box is fixedly connected to the upper portion of the connecting frame. Concrete raw materials are injected into the screening barrel through the feeding hopper, a first motor is started to drive a second belt wheel to rotate, a belt drives a first belt wheel to rotate, and therefore the screening barrel can rotate, and the raw materials can be screened; a material receiving device such as a cart is moved to the position below the first discharging hopper, a handle is rotated to drive a threaded rod to rotate, a material blocking plate can be moved, a discharging opening of the first discharging hopper can be opened, workers can conveniently collect screened raw materials, and the problems that an existing device is poor in screening effect and poor in practicability are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a screening device for concrete raw materials. Background Art

[0002] Concrete is a material made of a mixture of raw materials such as cement, sand, gravel and water. When selecting concrete raw materials, the following aspects need to be considered: Cement: Select the appropriate type of cement, such as ordinary cement, fast-setting cement, sulphoaluminate cement, etc. according to actual needs. Cement should have good gelling and hardening properties to meet the requirements of concrete strength and durability. When selecting concrete raw materials, it is necessary to evaluate and select according to factors such as the requirements of the specific project, the purpose of the concrete and the environmental conditions to ensure that the concrete has the required performance and quality. At the same time, it is also necessary to follow relevant national and local standards and specifications to ensure that the quality of the concrete meets the requirements.

[0003] After searching, the Chinese patent was disclosed (authorization announcement number: CN 220574040 U). The raw material screening device for concrete production is in use. When sand and gravel fall into a batch, the torsion spring will pop up the baffle to prevent the sand and gravel from being stuck due to excessive raw materials poured in at one time. Fine sand and other raw materials will fall down to the inclined plate through the screen and be discharged through the second discharge port. The motor will be started, and the motor will drive the shaft to rotate, so that the push rod will move up and down, and push the screen up and down to prevent some stones from being stuck on the screen. The rotating rod will drive the crushing roller to rotate, and the crushing teeth fixedly connected on the surface of the two sets of crushing rollers will crush the larger sand and gravel, and then discharge it through the first discharge port, which improves the efficiency of screening and processing. The vacuum cleaner is started to suck the raised dust into the collection box. By replacing crushing rollers of different sizes, sand and gravel of different sizes can be processed to meet the sand and gravel requirements of concrete of different specifications.

[0004] In actual application, this patented technology can screen raw materials for subsequent factory processing. However, during use, the screen of the above scheme is set in a V shape. However, the inclined surface of the V-shaped screen can easily divert qualified raw materials, thereby greatly reducing the screening effect of the device. At the same time, the mechanism setting of the discharge port of the above scheme is not convenient for the staff to collect the raw materials after screening and crushing, thereby greatly reducing the practicality of the device. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a screening device for concrete raw materials.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A screening device for concrete raw materials comprises a fixed frame, a screening box is fixedly connected to the top of the fixed frame, one end of the fixed frame is fixedly connected to the connecting frame, a crushing box is fixedly connected to the top of the connecting frame, the bottom of the crushing box passes through the connecting frame and is fixedly connected thereto, a screening cylinder is arranged inside the screening box, a feed hopper is arranged at the top end of the screening box, one end of the feed hopper passes through the screening box and is fixedly connected thereto, one end of the feed hopper is communicated with one end of the screening cylinder, a crushing mechanism is arranged inside the crushing box, both ends of the screening cylinder are sleeved with supporting frames, both sides of the supporting frame are fixedly connected to the inner wall of the screening box, a first discharging hopper is fixedly connected to the bottom of the fixed frame, the first discharging hopper is arranged below the screening cylinder, the interior of the screening box is communicated with the first discharging hopper, a transmission mechanism is arranged inside one end of the screening box, a second discharging hopper is fixedly connected to the bottom of the crushing box, an adjusting mechanism is arranged below the first discharging hopper and the second discharging hopper, and a cleaning mechanism is arranged inside the top of the screening box;

[0008] The transmission mechanism includes a first motor, a first pulley, a second pulley and a belt. The first motor is fixedly connected to the lower part of the screening box. The first motor is arranged at one end of the screening cylinder. The first pulley is sleeved on one end of the screening cylinder and fixedly connected thereto. One end of the second pulley is fixedly connected to the output end of the first motor. The belt is sleeved on the first pulley and the second pulley.

[0009] Preferably, the cleaning mechanism includes a connecting rod, a support rod, a second motor and a rubber plate, wherein two connecting rods are provided and are fixedly connected to the upper part of the interior of the screening box, the support rod is rotatably connected between the connecting rods, the second motor is fixedly connected to one side of a connecting rod, one end of the support rod passes through the connecting rod and is fixedly connected to the output end of the second motor, the rubber plate is fixedly connected to the support rod, and a plurality of rubber plates are provided and are evenly distributed.

[0010] Preferably, the adjusting mechanism includes a threaded rod, a bearing shaft, a blocking plate and a handle, the threaded rod is arranged on one side of the surface of the first discharging hopper, one end of the threaded rod passes through one side of the fixing frame and is threadedly connected thereto, the bearing shaft is fixedly connected to the other end of the threaded rod, one end of the blocking plate is fixedly connected to the other end of the bearing shaft, the other end of the blocking plate passes through the first discharging hopper and is slidably connected, and the handle is fixedly connected to one end of the threaded rod.

[0011] Preferably, a spiral guide plate is provided inside the screening cylinder, and the spiral guide plate is fixedly connected to the screening cylinder.

[0012] Preferably, a material guide plate is fixedly connected below the other end of the screening box, and the other side of the material guide plate corresponds to the feed opening on the crushing box.

[0013] Preferably, sliding grooves are provided on both sides of the lower interior of the first discharge hopper, and sliding blocks are fixedly connected on both sides of the other end of the blocking plate, and the sliding blocks are slidably connected to the interior of the first discharge hopper through the sliding grooves.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, concrete raw materials are added to the interior of the screening drum through a feed hopper, and the first motor is started to drive the second pulley to rotate, so that the belt drives the first pulley to rotate, thereby making the screening drum rotate and the raw materials can be screened, solving the problem of poor screening effect of the current device.

[0016] 2. In the utility model, by setting the first discharging hopper and the second discharging hopper, by moving the material collecting device such as the cart to the bottom of the first discharging hopper, and by turning the handle to drive the threaded rod to rotate, the blocking plate can be moved, and the discharging port of the first discharging hopper can be opened, so as to facilitate the staff to collect the raw materials after screening, thereby solving the problem of insufficient practicality of the current device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the screening device in the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the fixing frame and the screening box in the utility model.

[0019] Figure 3 It is a schematic diagram of the connection structure between the transmission mechanism and the cleaning mechanism in the utility model.

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the crushing box in the utility model.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the screening cylinder in the utility model.

[0022] Figure 6 It is a schematic diagram of the connection structure of the adjustment mechanism in the utility model.

[0023] Figure 7 It is a schematic diagram of the connection structure between the sliding groove and the sliding block in the utility model.

[0024] Legend:

[0025] 1. Fixed frame; 2. Screening box; 3. Connecting frame; 4. Crushing box; 5. Screening cylinder; 6. Feed hopper; 7. Crushing mechanism; 8. Support frame; 9. First discharge hopper; 10. Transmission mechanism; 101. First motor; 102. First pulley; 103. Second pulley; 104. Belt; 11. Adjusting mechanism; 111. Threaded rod; 112. Bearing shaft; 113. Blocking plate; 114. Handle; 12. Cleaning mechanism; 121. Connecting rod; 122. Support rod; 123. Second motor; 124. Rubber sheet; 13. Second discharge hopper; 14. Spiral guide plate; 15. Guide plate; 16. Sliding groove; 17. Sliding block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-7 The utility model provides an embodiment: a screening device for concrete raw materials, comprising a fixed frame 1, a screening box 2 is fixedly connected to the top of the fixed frame 1, the fixed frame 1 is used to fix the screening box 2, one end of the fixed frame 1 is fixedly connected to a connecting frame 3, the top of the connecting frame 3 is fixedly connected to a crushing box 4, the connecting frame 3 is used to fix the crushing box 4, the bottom of the crushing box 4 passes through the connecting frame 3 and is fixedly connected thereto, a screening cylinder 5 is arranged inside the screening box 2, the screening cylinder 5 is used to screen the raw materials, a feeding hopper 6 is arranged at one end above the screening box 2, the feeding hopper 6 is used to add raw materials to the inside of the screening cylinder 5, one end of the feeding hopper 6 passes through the screening box 2 and It is fixedly connected thereto, one end of the feed hopper 6 is connected to one end of the screening cylinder 5, a crushing mechanism 7 is arranged inside the crushing box 4, both ends of the screening cylinder 5 are sleeved with support frames 8, both sides of the support frames 8 are fixedly connected to the inner wall of the screening box 2, a first discharge hopper 9 is fixedly connected below the fixed frame 1, the first discharge hopper 9 is arranged below the screening cylinder 5, the interior of the screening box 2 is connected to the first discharge hopper 9, a transmission mechanism 10 is arranged inside one end of the screening box 2, a second discharge hopper 13 is fixedly connected below the crushing box 4, an adjustment mechanism 11 is arranged below the first discharge hopper 9 and the second discharge hopper 13, and a cleaning mechanism 12 is arranged inside the upper part of the screening box 2;

[0028] The transmission mechanism 10 includes a first motor 101, a first pulley 102, a second pulley 103 and a belt 104. The first motor 101 is fixedly connected to the lower part of the inner part of the screening box 2. The first motor 101 is arranged at one end of the screening cylinder 5. The first pulley 102 is sleeved on one end of the screening cylinder 5 and fixedly connected thereto. One end of the second pulley 103 is fixedly connected to the output end of the first motor 101. The belt 104 is sleeved on the first pulley 102 and the second pulley 103.

[0029] Through the above technical solution, by setting up the transmission mechanism 10, the concrete raw material is added to the interior of the screening drum 5 through the feed hopper 6, and by starting the first motor 101 to drive the second pulley 103 to rotate, the belt 104 drives the first pulley 102 to rotate, so that the screening drum 5 can be rotated and the raw materials can be screened.

[0030] Specifically, the cleaning mechanism 12 includes a connecting rod 121, a support rod 122, a second motor 123 and a rubber plate 124. Two connecting rods 121 are provided and are fixedly connected to the upper part of the interior of the screening box 2. The support rod 122 is rotatably connected between the connecting rods 121. The second motor 123 is fixedly connected to one side of a connecting rod 121. One end of the support rod 122 passes through the connecting rod 121 and is fixedly connected to the output end of the second motor 123. The rubber plate 124 is fixedly connected to the support rod 122. Several rubber plates 124 are provided and are evenly distributed.

[0031] Through the above technical solution, by setting up the cleaning mechanism 12 and starting the second motor 123 to drive the support rod 122 to rotate, the support rod 122 can drive the rubber plate 124 to rotate. When the rubber plate 124 contacts the screening cylinder 5, the surface of the screening cylinder 5 can be tapped to clean the raw materials blocked in the sieve mesh on the screening cylinder 5.

[0032] Specifically, the adjusting mechanism 11 includes a threaded rod 111, a bearing shaft 112, a blocking plate 113 and a handle 114. The threaded rod 111 is arranged on one side of the surface of the first discharge hopper 9, one end of the threaded rod 111 passes through one side of the fixed frame 1 and is threadedly connected thereto, the bearing shaft 112 is fixedly connected to the other end of the threaded rod 111, one end of the blocking plate 113 is fixedly connected to the other end of the bearing shaft 112, the other end of the blocking plate 113 passes through the first discharge hopper 9 and is slidably connected thereto, and the handle 114 is fixedly connected to one end of the threaded rod 111.

[0033] Through the above technical solution, by setting up the adjustment mechanism 11, by moving the material collecting device such as the cart to the bottom of the first discharge hopper 9 and the second discharge hopper 13, by turning the handle 114 to drive the threaded rod 111 to rotate, the blocking plate 113 can be moved, and the discharge port of the first discharge hopper 9 can be opened, so as to facilitate the staff to collect the raw materials after screening.

[0034] Specifically, a spiral guide plate 14 is disposed inside the screening cylinder 5 , and the spiral guide plate 14 is fixedly connected to the screening cylinder 5 .

[0035] Through the above technical solution, by providing the spiral guide plate 14 , the raw materials in the screening drum 5 can be guided, and the raw materials that cannot be screened by the screening drum 5 can be guided to the inside of the crushing box 4 .

[0036] Specifically, a material guide plate 15 is fixedly connected below the other end of the screening box 2 , and the other side of the material guide plate 15 corresponds to the feed opening on the crushing box 4 .

[0037] According to the above technical solution, by setting the guide plate 15, the raw materials that cannot be screened out of the screening cylinder 5 can be guided to the inside of the crushing box 4 through the guide plate 15, and the raw materials that cannot be screened can be crushed by the crushing mechanism 7.

[0038] Specifically, sliding grooves 16 are provided on both sides of the lower interior of the first discharge hopper 9 , and sliding blocks 17 are fixedly connected on both sides of the other end of the blocking plate 113 , and the sliding block 17 is slidably connected to the interior of the first discharge hopper 9 through the sliding grooves 16 .

[0039] Through the above technical solution, by setting the sliding groove 16 and the sliding block 17, the blocking plate 113 can be guided and limited when it moves, and at the same time, it is used to connect the blocking plate 113 and the first discharge hopper 9.

[0040] Working principle: When in use, first start the first motor 101, the crushing mechanism 7 and the dust suction mechanism above the screening box 2, and drive the second pulley 103 to rotate through the first motor 101, so that the belt 104 drives the first pulley 102 to rotate, and the screening drum 5 is rotated, and then the raw materials are added to the inside of the screening drum 5 through the feed hopper 6, and then under the action of the rotation of the screening drum 5, the original can be screened, and the qualified raw materials will fall under the screening drum 5 and enter the first discharge hopper 9, and then under the action of the screening drum 5 driving the spiral guide plate 14 to rotate, the raw materials can be moved inside the screening drum 5, and the raw materials that cannot pass the screen can be guided to the inside of the crushing box 4 through the guide plate 15, and then through the crushing mechanism 7 can perform a certain crushing treatment on the raw materials that cannot be screened, and then the crushed raw materials will fall into the second discharge hopper 13. When it is necessary to collect the screened or crushed raw materials, by moving the cart or other material collecting device to the bottom of the first discharge hopper 9 and the second discharge hopper 13, the handle 114 is turned to drive the threaded rod 111 to rotate, so that the blocking plate 113 can be moved, and the discharge port of the first discharge hopper 9 can be opened, so as to facilitate the staff to collect the screened raw materials. At the same time, when the cart is full, the handle 114 is turned again to drive the threaded rod 111 to rotate, so that the blocking plate 113 can be moved, and the discharge port of the first discharge hopper 9 can be closed, so as to prevent the material from falling on the ground when the cart is replaced.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screening device for concrete raw materials, comprising a fixing frame (1), characterized in that: A screening box (2) is fixedly connected to the top of the fixed frame (1), a connecting frame (3) is fixedly connected to one end of the fixed frame (1), a crushing box (4) is fixedly connected to the top of the connecting frame (3), the bottom of the crushing box (4) passes through the connecting frame (3) and is fixedly connected thereto, a screening cylinder (5) is arranged inside the screening box (2), a feed hopper (6) is arranged at one end of the top of the screening box (2), one end of the feed hopper (6) passes through the screening box (2) and is fixedly connected thereto, one end of the feed hopper (6) is connected to one end of the screening cylinder (5), a crushing mechanism (7) is arranged inside the crushing box (4), and both ends of the screening cylinder (5) are connected to the screening cylinder (5). A support frame (8) is sleeved on both ends of the crushing box (4), both sides of the support frame (8) are fixedly connected to the inner wall of the screening box (2), a first discharge hopper (9) is fixedly connected to the bottom of the fixed frame (1), the first discharge hopper (9) is arranged below the screening cylinder (5), the interior of the screening box (2) is connected to the first discharge hopper (9), a transmission mechanism (10) is arranged inside one end of the screening box (2), a second discharge hopper (13) is fixedly connected to the bottom of the crushing box (4), an adjustment mechanism (11) is arranged below the first discharge hopper (9) and the second discharge hopper (13), and a cleaning mechanism (12) is arranged inside the top of the screening box (2); The transmission mechanism (10) comprises a first motor (101), a first belt pulley (102), a second belt pulley (103) and a belt (104); the first motor (101) is fixedly connected to the lower part of the screening box (2); the first motor (101) is arranged at one end of the screening cylinder (5); the first belt pulley (102) is sleeved on one end of the screening cylinder (5) and fixedly connected thereto; one end of the second belt pulley (103) is fixedly connected to the output end of the first motor (101); and the belt (104) is sleeved on the first belt pulley (102) and the second belt pulley (103).

2. A screening device for concrete raw materials according to claim 1, characterized in that: The cleaning mechanism (12) comprises a connecting rod (121), a supporting rod (122), a second motor (123) and a rubber plate (124); two connecting rods (121) are provided and are fixedly connected to the upper part of the interior of the screening box (2); the supporting rod (122) is rotatably connected between the connecting rods (121); the second motor (123) is fixedly connected to one side of a connecting rod (121); one end of the supporting rod (122) passes through the connecting rod (121) and is fixedly connected to the output end of the second motor (123); the rubber plate (124) is fixedly connected to the supporting rod (122); a plurality of rubber plates (124) are provided and are evenly distributed.

3. A screening device for concrete raw materials according to claim 1, characterized in that: The adjusting mechanism (11) comprises a threaded rod (111), a bearing shaft (112), a blocking plate (113) and a handle (114); the threaded rod (111) is arranged on one side of the surface of the first discharge hopper (9); one end of the threaded rod (111) passes through one side of a fixing frame (1) and is threadedly connected thereto; the bearing shaft (112) is fixedly connected to the other end of the threaded rod (111); one end of the blocking plate (113) is fixedly connected to the other end of the bearing shaft (112); the other end of the blocking plate (113) passes through the first discharge hopper (9) and is slidably connected thereto; and the handle (114) is fixedly connected to one end of the threaded rod (111).

4. A screening device for concrete raw materials according to claim 1, characterized in that: A spiral guide plate (14) is arranged inside the screening cylinder (5), and the spiral guide plate (14) is fixedly connected to the screening cylinder (5).

5. The concrete raw material screening device according to claim 1, characterized in that: A material guide plate (15) is fixedly connected below the other end of the screening box (2), and the other side of the material guide plate (15) corresponds to the feed opening on the crushing box (4).

6. A screening device for concrete raw materials according to claim 3, characterized in that: Sliding grooves (16) are provided on both sides of the lower interior of the first discharge hopper (9), and sliding blocks (17) are fixedly connected to both sides of the other end of the blocking plate (113), and the sliding block (17) is slidably connected to the interior of the first discharge hopper (9) through the sliding grooves (16).

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