Concrete raw material screening equipment for hydraulic engineering construction

Abstract

The utility model discloses concrete raw material screening equipment for hydraulic engineering construction, and relates to the technical field of hydraulic engineering construction, the concrete raw material screening equipment comprises a supporting frame, the top end of the supporting frame is rotatably connected with a supporting rod, and the outer wall, close to one end, of the supporting rod is sequentially and rotatably connected with a fine screen mesh cylinder, a medium screen mesh cylinder and a coarse screen mesh cylinder; the medium screen mesh cylinder is located in the fine screen mesh cylinder, the coarse screen mesh cylinder is located in the medium screen mesh cylinder, and a poke rod set is arranged in the fine screen mesh cylinder. The first stirring rod, the second stirring rod and the third stirring rod are driven by the driving motor to rotate, concrete raw materials in the coarse screen mesh cylinder, the medium screen mesh cylinder and the fine screen mesh cylinder are stirred, and the screening process is accelerated. Meanwhile, the hydraulic rod drives the fine screen barrel to deflect around the supporting rod and is matched with stirring of the poke rod set, and the screening efficiency is further improved. By means of the mode of combining stirring and deflection, the raw materials can fully roll and flow in the screen barrel, and the screening time is greatly shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to water conservancy construction technical field, concretely relates to a concrete raw material screening equipment for water conservancy construction. BACKGROUND

[0002] In the traditional water conservancy construction, the concrete raw material screening equipment has serious deficiency in screening efficiency. The early screening equipment mostly adopts static screen structure, and only relies on the raw material gravity to pass through the screen, which makes the raw material stay on the screen for a long time and the screening speed extremely slow. For example, when processing a large amount of sand and stone concrete raw materials, the screening capacity per hour is extremely low, which cannot meet the supply demand of concrete raw materials for large-scale water conservancy construction rapid construction.

[0003] Later, some simple vibrating screen equipment appeared, which improved the screening efficiency to some extent, but the vibration mode was single, the raw materials were unevenly distributed on the screen, and the raw materials in some areas could not be fully screened, resulting in the need for repeated screening operation, which wasted time and consumed energy. Moreover, these devices lack an active stirring mechanism for the raw materials, which are prone to accumulate on the screen surface, further hindering the screening process, making it difficult to meet the progress requirements of modern water conservancy construction. SUMMARY

[0004] The utility model aims at providing a concrete raw material screening equipment for water conservancy construction to solve the problems in the above background technology.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A concrete raw material screening equipment for water conservancy construction, comprising a support frame, a support rod rotatably connected to the top end of the support frame, and a fine screen cylinder, a medium screen cylinder and a coarse screen cylinder rotatably connected in sequence to the outer wall of the support rod near one end;

[0007] The medium screen cylinder is located inside the fine screen cylinder, and the coarse screen cylinder is located inside the medium screen cylinder. The inside of the fine screen cylinder is provided with a stirring rod group, which comprises stirring rod one, stirring rod two and stirring rod three. One end of the support rod is fixed in sequence through the stirring rod one, the stirring rod two and the stirring rod three.

[0008] The stirring rod one is rotatably connected to the inner wall of the coarse screen cylinder, the stirring rod two is rotatably connected to the inner wall of the medium screen cylinder, and the stirring rod three is rotatably connected to the inner wall of the fine screen cylinder. One side of the fine screen cylinder is provided with a deflection driving assembly, which is used to drive the fine screen cylinder to deflect around the support rod. The deflection driving assembly comprises a hydraulic rod.

[0009] The further improvement in the technical scheme of the utility model lies in that one end of the supporting rod is fixedly connected with a belt pulley, the outer wall of the belt pulley is sleeved with a transmission belt, one end of the transmission belt away from the belt pulley is transmissionally connected with a driving motor, and the fine screen drum, the medium screen drum and the coarse screen drum are fixedly connected through the fixed frame.

[0010] The further improvement in the technical scheme of the utility model lies in that the telescopic end of the hydraulic rod is rotationally connected with a mounting block, and one end of the mounting block is fixedly connected with one side of the fine screen drum.

[0011] The further improvement in the technical scheme of the utility model lies in that the bottom end of the hydraulic rod is rotationally connected with one side of the supporting frame through an axle seat.

[0012] The further improvement in the technical scheme of the utility model lies in that the fixed frame is located inside the fine screen drum.

[0013] The further improvement in the technical scheme of the utility model lies in that a screening material conveying belt is arranged below the fine screen drum, the inner wall of the supporting frame is fixedly connected with a material guiding arc plate, and the material guiding arc plate is located below the side close to the fine screen drum.

[0014] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] The utility model provides a kind of concrete raw material screening equipment for hydraulic engineering construction, is stirred to the concrete raw material in coarse screen drum, medium screen drum and fine screen drum by driving motor driving stirring rod one, two, three rotation, accelerates screening process.Meanwhile, the hydraulic rod drives fine screen drum to deflect around supporting rod, and is cooperated with the stirring of poking rod group, further improves screening efficiency.This kind of stirring and deflection combined mode can make raw material fully tumble, flow in screen drum, greatly shorten screening time, meet the demand of concrete raw material rapid screening for hydraulic engineering construction.

[0016] The utility model provides a kind of concrete raw material screening equipment for hydraulic engineering construction, and the screening design of fine screen drum, medium screen drum and coarse screen drum gradually, effectively improves screening effect, reduces the occurrence of jam problem.And, after screening, can be pushed fine screen drum to maximum angle deflection by hydraulic rod, so that remaining raw material residue is poured on material guiding arc plate and is discharged, cleaning process is simple and convenient, without manual cleaning residue in screen drum, reduce labor intensity, guarantee that equipment can continue efficient operation. ACCURACY OF DRAWINGS

[0017] Figure 1 It is the structure schematic diagram of the utility model;

[0018] Figure 2 It is the left view structure schematic diagram of the utility model;

[0019] Figure 3 It is the rough sieve net cylinder overhead structure schematic diagram of the utility model;

[0020] Figure 4 It is the structure schematic diagram of the utility model's poking rod group.

[0021] In the drawing: 1, fine sieve net cylinder; 2, middle sieve net cylinder; 3, rough sieve net cylinder; 4, poking rod group; 5, sieve material conveying belt; 6, material guide arc plate; 7, driving motor; 8, transmission belt; 9, pulley; 10, hydraulic rod; 11, mounting block; 12, fixed frame; 13, support frame; 14, support rod; 15, stirring rod one; 16, stirring rod two; 17, stirring rod three. DETAILED DESCRIPTION

[0022] In the description of the utility model, it also needs to explain that, unless there is explicit provision and limitation, the terms "set", "install", "connect", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] The utility model is further explained in detail as follows by combining with examples:

[0024] Example 1

[0025] As Figures 1-4 The utility model provides a concrete raw material screening equipment for hydraulic engineering construction, including support frame 13, the top of support frame 13 is rotatably connected with support rod 14, the outer wall close to the end of support rod 14 is rotatably connected with fine sieve net cylinder 1, middle sieve net cylinder 2 and rough sieve net cylinder 3 in proper order;

[0026] Middle sieve net cylinder 2 is located in the inside of fine sieve net cylinder 1, and rough sieve net cylinder 3 is located in the inside of middle sieve net cylinder 2, the inside of fine sieve net cylinder 1 is provided with poking rod group 4, and poking rod group 4 includes stirring rod one 15, stirring rod two 16 and stirring rod three 17, one end of support rod 14 is fixedly penetrated stirring rod one 15, stirring rod two 16 and stirring rod three 17 in proper order;

[0027] Stirring rod one 15 is rotatably connected to the inner wall of rough sieve net cylinder 3, stirring rod two 16 is rotatably connected to the inner wall of middle sieve net cylinder 2, and stirring rod three 17 is rotatably connected to the inner wall of fine sieve net cylinder 1, one side of fine sieve net cylinder 1 is provided with deflection drive assembly, and the deflection drive assembly is used to drive fine sieve net cylinder 1 to deflect around support rod 14, and the deflection drive assembly includes hydraulic rod 10.

[0028] The fine screen cylinder 1 has an inner diameter of 800 mm, a length of 1500 mm, a screen mesh size of 5 mm, is woven from high-strength stainless steel, has good wear resistance and corrosion resistance, and can effectively screen out raw materials meeting the particle size requirements of fine concrete aggregates. The medium screen cylinder 2 has an inner diameter of 1200 mm, a length of 1500 mm, a screen mesh size of 15 mm, is also made of stainless steel, and is used to screen medium-sized concrete raw materials. The coarse screen cylinder 3 has an inner diameter of 1600 mm, a length of 1500 mm, a screen mesh size of 30 mm, is made of carbon steel that has been surface-hardened, can withstand the impact of large-particle raw materials, and is mainly used to screen out large impurities in the raw materials.

[0029] Embodiment 2

[0030] As Figures 1-4 shown, on the basis of embodiment 1, the utility model provides a technical scheme: preferably, one end of support rod 14 is fixedly connected with belt pulley 9, the outer wall of belt pulley 9 is sleeved with transmission belt 8, the end away from belt pulley 9 of transmission belt 8 is drivingly connected with driving motor 7, and fine screen cylinder 1, medium screen cylinder 2 and coarse screen cylinder 3 are fixedly connected through fixed frame 12.

[0031] The telescopic end of hydraulic rod 10 is rotatably connected with mounting block 11, and one end of mounting block 11 is fixedly connected with one side of fine screen cylinder 1.

[0032] The bottom end of hydraulic rod 10 is rotatably connected with one side of support frame 13 through an axle seat.

[0033] Fixed frame 12 is located inside fine screen cylinder 1, a screening conveyor belt 5 is arranged below fine screen cylinder 1, a material guiding arc plate 6 is fixedly connected to the inner wall of support frame 13, and material guiding arc plate 6 is located below the side of fine screen cylinder 1 close to one side.

[0034] When the equipment is started, first, the external power supply is connected, and the control system is initialized. Then, the driving motor 7 is started, the driving motor 7 reaches the rated speed of 1440 r / min after 3 seconds of soft start, the belt pulley 9 is driven to rotate through the transmission belt 8, and then the support rod 14 drives the stirring rod one 15, the stirring rod two 16 and the stirring rod three 17 to start rotating. After the driving motor 7 is started for 5 seconds, the hydraulic rod 10 is started, and the fine screen cylinder 1 is driven to deflect at a small angle at an initial set frequency and amplitude. When it is detected that the raw materials in the screen cylinder are accumulated or the screening efficiency is reduced, the control system automatically adjusts the stroke of the hydraulic rod 10 and the rotating speed of the driving motor 7 to improve the screening effect. When the equipment is stopped, the action of the hydraulic rod 10 is stopped first, and then the driving motor 7 is stopped after the fine screen cylinder 1 returns to the initial position.

[0035] The working principle of the concrete raw material screening equipment for water conservancy project construction will be described in detail below.

[0036] AsFigures 1-4 As shown, in use, the screened concrete raw materials are poured into the coarse screen cylinder 3, at this time, the external power supply starts the driving motor 7, the driving motor 7 drives the belt pulley 9 to rotate through the transmission belt 8, the belt pulley 9 drives the stirring rod one 15, the stirring rod two 16 and the stirring rod three 17 to rotate through the support rod 14, thereby being capable of stirring the concrete raw materials in the coarse screen cylinder 3, the middle screen cylinder 2 and the fine screen cylinder 1, and accelerating the screening work.

[0037] In the process of rotating and stirring of the dial lever group 4, the hydraulic rod 10 can be started to push the fine screen cylinder 1 to deflect around the support rod 14 through the mounting block 11, cooperating with the stirring work of the dial lever group 4, further improving the screening efficiency.

[0038] Meanwhile, the fine screen cylinder 1, the middle screen cylinder 2 and the coarse screen cylinder 3 are screened step by step, improving the screening effect and reducing the occurrence of the blocking problem.

[0039] The screened concrete raw materials will fall on the screening conveying belt 5 to be conveyed.

[0040] When the screening is finished, the hydraulic rod 10 is started to push the mounting block 11 to drive the fine screen cylinder 1 to deflect at the maximum angle, and the remaining raw material residues will be poured on the guide arc plate 6 to be discharged.

[0041] The above has made a detailed description of the utility model, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A concrete raw material screening device for hydraulic engineering construction, comprising a support frame (13), characterized in that: The top end of the support frame (13) is rotationally connected with a support rod (14), and the outer wall close to one end of the support rod (14) is rotationally connected with a fine meshing cylinder (1), a medium meshing cylinder (2) and a coarse meshing cylinder (3) in sequence. The medium meshing cylinder (2) is located inside the fine meshing cylinder (1), the coarse meshing cylinder (3) is located inside the medium meshing cylinder (2), the inside of the fine meshing cylinder (1) is provided with a stirring rod group (4), the stirring rod group (4) comprises a stirring rod one (15), a stirring rod two (16) and a stirring rod three (17), and one end of the support rod (14) is fixedly penetrated through the stirring rod one (15), the stirring rod two (16) and the stirring rod three (17) in sequence. The stirring rod one (15) is rotationally connected to the inner wall of the coarse meshing cylinder (3), the stirring rod two (16) is rotationally connected to the inner wall of the medium meshing cylinder (2), the stirring rod three (17) is rotationally connected to the inner wall of the fine meshing cylinder (1), one side of the fine meshing cylinder (1) is provided with a deflection driving assembly, the deflection driving assembly is used for driving the fine meshing cylinder (1) to deflect around the support rod (14), and the deflection driving assembly comprises a hydraulic rod (10).

2. The concrete raw material screening device for hydraulic engineering construction according to claim 1, characterized in that: One end of the support rod (14) is fixedly connected with a belt pulley (9), the outer wall of the belt pulley (9) is sleeved with a transmission belt (8), one end, away from the belt pulley (9), of the transmission belt (8) is transmissionally connected with a driving motor (7), and the fine meshing cylinder (1), the medium meshing cylinder (2) and the coarse meshing cylinder (3) are fixedly connected through a fixed frame (12).

3. The concrete raw material screening device for hydraulic engineering construction according to claim 1, characterized in that: The telescopic end of the hydraulic rod (10) is rotationally connected with a mounting block (11), and one end of the mounting block (11) is fixedly connected with one side of the fine meshing cylinder (1).

4. The concrete raw material screening device for hydraulic engineering construction according to claim 1, characterized in that: The bottom end of the hydraulic rod (10) is rotationally connected with one side of the support frame (13) through an axle seat.

5. The concrete raw material screening device for hydraulic engineering construction according to claim 2, characterized in that: The fixed frame (12) is located inside the fine meshing cylinder (1).

6. The concrete raw material screening device for hydraulic engineering construction according to claim 1, characterized in that: A screening conveying belt (5) is arranged below the fine meshing cylinder (1), and a material guiding arc plate (6) is fixedly connected to the inner wall of the support frame (13), and the material guiding arc plate (6) is located below the side close to the fine meshing cylinder (1).

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