Screening and impurity removing integrated sand washer

Abstract

The utility model belongs to the technical field of gravel aggregate processing, and particularly provides a screening and impurity removing integrated sand washer which comprises a sand washing tank, a sand washing assembly and a swing driving assembly. The sand washing assembly comprises a plurality of layers of sand washing plates which are arranged at intervals in the height direction; leaking holes are formed in the sand washing plates, and the diameters of the leaking holes in the multiple layers of arc-shaped sand washing plates are sequentially reduced from high to low; the sand washing assembly is connected with the output end of the swing driving assembly. And the swing driving assembly is used for driving the sand washing assembly to swing in the sand washing tank. According to the sand washer, the sand washing assembly swings back and forth in the sand washing tank, and attached impurities are washed away through friction between sand washing liquid and machine-made sand particles. According to the multi-layer sand washing plate, impurity removal of machine-made sand can be achieved, meanwhile, the sorting procedure of machine-made sand particle size grading is completed, the procedure step of wet-method sand making is omitted, the purpose of continuous production of high-quality machine-made sand is achieved, the production efficiency of a gravel aggregate line is improved, meanwhile, equipment investment is reduced, and the operation cost of the production line is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sandstone aggregate processing technical field, concretely relates to a screening and impurity removing integrated sand washer. BACKGROUND

[0002] In recent years, the production technology of using machine-made sand for commercial concrete has been very mature, and the results of various infrastructure projects show that fine machine-made sand aggregate can completely replace natural sand, and has more excellent performance than natural sand. The view that machine-made sand gradually becomes the main material for concrete production in infrastructure has become a consensus. However, due to the backwardness of machine-made sand production process and the uneven powder content, high methylene blue (MB) value and poor grading of machine-made sand, the produced concrete has high water consumption, large time loss, poor workability and is not easy to pump, etc. Defects, which are prone to quality problems such as unqualified concrete strength and cracks, adversely affect the quality and efficiency of engineering construction, and seriously affect the development of infrastructure field. Therefore, producing fine machine-made sand with reasonable powder content, qualified MB value and good grading performance has become the mainstream trend in the sandstone and concrete industries.

[0003] At present, machine-made sand is mainly produced by coarse sand washing, fine sand recovery and sand mixing dehydration process. However, the existing sand washer has the disadvantages of poor sand washing cleanliness, low fine sand recovery rate, uneven mixing, etc., which leads to high MB value of finished sand, unreasonable grading, high water content, and cannot meet the requirements of fine machine-made sand indicators and environmental protection. Some sand washers quickly reduce the kinetic energy of sand water by setting a reduction gearbox, keep the sand water stable and quiet in the sand water tank, create space for fine sand to fully settle, and recover fine sand through the fine sand settling recovery tank. But it does not solve the problem of impurity removal and sand gravel grading separation of fine machine-made sand. At the same time, the included angle between the blade bottom and the wheel bucket is small, which may cause the phenomenon that sandstone is jammed in the wheel bucket blade during sand washing, thereby affecting normal sand washing operation and the production efficiency of sand aggregate line. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the problems of poor sand washing cleanliness, low fine sand recovery rate, difficult sand gravel grading separation and low production efficiency in the prior art.

[0005] Therefore, the utility model provides a screening and impurity removing integrated sand washer, which comprises a sand washing tank, a sand washing assembly and a swing driving assembly.

[0006] Specifically, the sand washing plate side edge is provided with a sand baffle.

[0007] Specifically, the inner wall of the sand washing tank is coated with an anti-corrosion coating.

[0008] Specifically, the side edge of the slot of the sand washing tank is provided with a first arc-shaped plate and a second arc-shaped plate with different radii; the arc surfaces of the first arc-shaped plate and the second arc-shaped plate are tangent, forming a closed structure at the side edge of the slot.

[0009] Specifically, the swing driving assembly comprises a rotating shaft, a driving member and a connecting member; one end of the rotating shaft is connected to the output end of the driving member; one end of the connecting member is connected to the rotating shaft, and the other end is connected to the sand washing assembly.

[0010] Specifically, the driving member comprises a servo motor and a connecting rod mechanism; the output end of the servo motor is coaxially connected to the input end of the connecting rod mechanism; the output end of the connecting rod mechanism is coaxially connected to the rotating shaft.

[0011] Specifically, the connecting member comprises a first connecting rod and a second connecting rod; the first connecting rod and the second connecting rod are symmetrically arranged on both sides of the sand washing assembly; the two sides of the multiple layers of sand washing plates are sequentially connected to the first connecting rod and the second connecting rod along the length direction; one end of the first connecting rod and the second connecting rod is respectively connected to the output end of the swing driving assembly.

[0012] Specifically, the swing driving assembly further comprises a bearing; the bearing is sleeved on the outside of the rotating shaft.

[0013] Specifically, the sand washing and impurity removing integrated machine further comprises a supporting frame; the sand washing tank is arranged in the supporting frame; the swing driving assembly is installed on the supporting frame.

[0014] Specifically, the bottom of the supporting frame is provided with a guide rail; the sand washing tank is slidingly installed on the guide rail.

[0015] Compared with the prior art, the sand washing and impurity removing integrated machine has the following advantages and beneficial effects:

[0016] The sand washing and impurity removing integrated machine provided by the utility model realizes reciprocating swing of the sand washing assembly in the sand washing tank, utilizes the friction between the machine-made sand particles to wash away the clay impurities adhered to the surface, simultaneously utilizes the acid liquid in the sand washing tank to wrap and adhere the heavy metal impurities such as mechanical iron on the sand particles, has a remarkable improvement effect on the cleanliness of the mine crusher-made sand. The multiple layers of sand washing plates can realize the sand particle size grading separation process while removing the impurities of the machine-made sand, save the wet sand making process steps, achieve the purpose of continuous production of fine machine-made sand, improve the production efficiency of the sand and gravel aggregate line, reduce the equipment investment, reduce the production line operation cost, adapt to the new development needs of the industry, and have remarkable economic benefits.

[0017] The utility model will be further described in detail in combination with the drawings. Attached Figure Description

[0018] Fig. 1 This is a front view of the integrated screening and impurity removal sand washing machine provided by this utility model.

[0019] Fig. 2 This is a side view of the integrated sand washing machine for screening and impurity removal provided by this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Sand washing tank; 101. First arc-shaped plate; 102. Second arc-shaped plate; 2. Sand washing plate; 3. Support frame; 4. Guide rail; 5. Rotating shaft; 6. Bearing; 7. Servo motor; 8. Linkage mechanism; 9. First connecting rod; 10. Second connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Reference Figs. 1-2The utility model provides a kind of screening and impurity removal integrated sand washer, including sand washing tank 1, sand washing assembly and swing drive assembly;The sand washing assembly includes multiple layers of sand washing plate 2 arranged in height direction interval;The sand washing plate 2 is provided with leak hole, and the leak hole diameter on multiple layers of arc sand washing plate 2 decreases in turn from high to low;The sand washing assembly is connected with the output end of the swing drive assembly;The swing drive assembly is used to drive sand washing assembly to swing in sand washing tank 1.Use, according to the sandstone cleaning demand, load into suitable sand washing liquid in sand washing tank 1, generally be acid liquor.Sand washing plate 2 is immersed in sand washing liquid, start swing drive assembly, and make sand washing assembly reciprocating swing in sand washing tank 1.Machine-made sand is thrown to sand washing assembly by mechanical discharge hopper or conveying belt, and machine-made sand is removed under the acid immersion effect of pickling liquid and the attrition effect between sand grains.Meanwhile, machine-made sand is screened by sand washing plate 2 with different aperture leak hole under the action of gravity and its particle size, and falls into corresponding sand washing plate 2, to realize the gradation selection of machine-made sand after impurity removal, and finally clean machine-made sand particle with high degree of cleanliness and high degree of particle gradation classification can be obtained.Sand washing plate 2 layer, leak hole quantity and size, layer distance can be designed according to actual needs.Generally, 3-7 layers of sand washing plate 2 are provided, can be made of ferrite, austenitic stainless steel or other material mesh, 3.6-5.2m long, 1.8-3.2m wide, 0.08-0.15m apart between each layer, and the mesh opening specification is one or more of 0.038mm, 0.075mm, 0.15mm, 0.3mm, 0.6mm, 1.18mm, 2.36mm, 4.75mm and 9.5mm.

[0025] Further, sand washing plate 2 side edge is equipped with sand baffle to avoid machine-made sand from side edge from sliding during swing, and sand baffle height is designed according to needs, generally 0.05-0.15m.

[0026] Since sand washing liquid is mostly acid liquor, to prevent corrosion tank, the inner wall of sand washing tank 1 is sprayed with anticorrosive coating, and the coating material is one of polyester coating, epoxy coating, asphalt and silicon carbide coating.

[0027] Further, the slot side edge of sand washing tank 1 is composed of first arc plate 101 and second arc plate 102 with different radii;The arc surface of first arc plate 101 and second arc plate 102 is tangent, forming inward closing structure at slot side edge, to prevent sand washing liquid in sand washing tank 1 from splashing out during swing of sand washing assembly.

[0028] Optionally, the height of the sand washing tank 1 is 0.6-1.5 m, the length is 4-6 m, the width is 2-3.5 m, the bottom is a square tank, a group of first arc-shaped plates 101 and a group of second arc-shaped plates 102 are arranged on each side of the tank mouth, the radius of the first arc-shaped plate 101 is 0.6-1.5 m, and the radius of the second arc-shaped plate 102 is 0.1-0.3 m. The lower end of the arc surface of the first arc-shaped plate 101 is welded with the side of the square tank, and the upper end is welded with the arc surface of the second arc-shaped plate 102, forming a closed structure.

[0029] In a refined embodiment, the swing driving assembly includes a rotating shaft 5, a driving member, and a connecting member; one end of the rotating shaft 5 is connected with the output end of the driving member; one end of the connecting member is connected with the rotating shaft 5, and the other end is connected with the sand washing assembly. The length of the rotating shaft 5 can be selected as 2.4-4 m, and the diameter is 0.08-0.25 m. The rotating shaft 5, the connecting member, and the sand washing assembly swing in the sand washing tank 1.

[0030] Specifically, the driving member includes a servo motor 7 and a connecting rod mechanism 8; the output end of the servo motor 7 is coaxially connected with the input end of the connecting rod mechanism 8; the output end of the connecting rod mechanism 8 is coaxially connected with the rotating shaft 5. The power of the servo motor 7 is generally 0.8-5 kW, and the purpose of the connecting rod mechanism 8 is to convert the rotary motion of the motor output shaft into reciprocating swing motion.

[0031] Further, the swing driving assembly further includes a bearing 6; the bearing 6 is sleeved on the outside of the rotating shaft 5, so that the rotating shaft 5 rotates more smoothly. The bearing 6 can be a deep groove ball stainless steel bearing 6 with an inner diameter of 0.08-0.25 m, an outer diameter of 0.12-0.4 m, and a width of 0.04-0.12 m.

[0032] In an embodiment, the connecting member includes a first connecting rod 9 and a second connecting rod 10; the first connecting rod 9 and the second connecting rod 10 are respectively symmetrically arranged on both sides of the sand washing assembly; the two sides of the multiple layers of sand washing plates 2 are sequentially connected with the first connecting rod 9 and the second connecting rod 10 along the length direction; one end of the first connecting rod 9 and the second connecting rod 10 is respectively connected with the output end of the swing driving assembly. In order to make the sand washing assembly swing more smoothly, a plurality of connecting members can be arranged along the length direction of the rotating shaft 5.

[0033] In a refined embodiment, the multiple layers of sand washing plates 2 are arc-shaped sand washing plates 2 arranged from top to bottom; one end of the first connecting rod 9 and the second connecting rod 10 is connected with the rotating shaft 5 to form an included angle matching the arc-shaped sand washing plate 2; the straight edges corresponding to the two ends of the arc-shaped edges of the multiple layers of arc-shaped sand washing plates 2 are respectively connected with the first connecting rod 9 and the second connecting rod 10 along the length direction of the connecting rod, forming a bucket-shaped structure.

[0034] The first connecting rod 9 and the second connecting rod 10 can be made of steel pipes, with a length of 4.8-7 m, a diameter of 0.05-0.1 m, and welded to the rotating shaft 5 at the end. In order to prevent the steel pipes immersed in the sand washing tank 1 from being corroded, a corrosion-resistant coating can be sprayed on the outer surface of the steel pipes, with a height of 0.8-1.2 m.

[0035] In an optimized embodiment, the sand washing machine integrating screening and impurity removal further comprises a support frame 3; the sand washing tank 1 is arranged in the support frame 3; and the swing driving assembly is mounted on the support frame 3.

[0036] Specifically, the support frame 3 comprises a parallel frame and two triangular frames, the parallel frame has a length of 2.6-4 m and a width of 2.4-4 m, and the triangular frames have a height of 4.5-8 m. The bottom edges of the two triangular frames are symmetrically connected to the two sides of the parallel frame, respectively, and an axle bearing 6 is arranged at each of the top corners of the two triangular frames, and the two ends of the rotating shaft 5 are respectively inserted into the corresponding axle bearings 6.

[0037] Further, the support frame 3 is provided with a guide rail 4 at the bottom; and the sand washing tank 1 is slidingly mounted on the guide rail 4, for horizontal movement of the sand washing tank 1.

[0038] Embodiment one:

[0039] The embodiment provides a sand washing machine integrating screening and impurity removal, which comprises a sand washing tank 1, a sand washing assembly, a support frame 3 and a swing driving assembly.

[0040] The sand washing tank 1 has a height of 1 m, a length of 4.2 m and a width of 2.5 m, and the inner wall is coated with a polyester corrosion-resistant coating with a height of 1 m; the side edges of the tank opening of the sand washing tank 1 are composed of a first arc-shaped plate 101 and a second arc-shaped plate 102 with different radii, the first arc-shaped plate 101 has a radius of 1 m, the second arc-shaped plate 102 has a radius of 0.1 m, the lower end of the arc surface of the first arc-shaped plate 101 is welded to the bottom square tank edge, and the upper end is tangent to the arc surface of the second arc-shaped plate 102 and welded, forming a closed structure.

[0041] The sand washing assembly comprises four layers of arc-shaped sand washing plates 2 made of stainless steel mesh, the mesh has a length of 4 m and a width of 2.2 m, each layer of the sand washing plates 2 is arranged at an interval of 0.1 m along the height direction, and the mesh specifications are 0.15 mm, 0.6 mm, 1.18 mm and 4.75 mm; and a sand blocking plate with a height of 0.1 m is arranged on the outer side of the sand washing plate 2.

[0042] The support frame 3 comprises a parallel frame and two triangular frames welded by square steel, the parallel frame is placed on the ground and has a length of 3 m and a width of 2.8 m, the parallel frame is internally provided with a horizontal guide rail 4, the sand washing tank 1 is slidably placed on the guide rail 4 and can move left and right along the guide rail 4, the two triangular frames are symmetrically arranged on the front and rear sides of the sand washing tank 1, have a height of 6 m, the bottom sides are respectively welded with the corresponding sides of the parallel frame, and each of the top corners is provided with a deep groove ball stainless steel bearing 6 with an inner diameter of 0.15 m, an outer diameter of 0.25 m and a width of 0.08 m.

[0043] The swing driving assembly comprises a rotating shaft 5, a driving part and a connecting part, the rotating shaft 5 has a length of 3.4 m and a diameter of 0.15 m, and is sleeved in the deep groove ball stainless steel bearings 6 at two ends, the driving part comprises a servo motor 7 and a connecting rod mechanism 8, the servo motor 7 has a power of 1 kW, the servo motor 7 and the connecting rod mechanism 8 are arranged on the same side of the rotating shaft 5, the output end of the servo motor 7 is coaxially connected with the input end of the connecting rod mechanism 8, and the output end of the connecting rod mechanism 8 is coaxially connected with one end of the rotating shaft 5, the connecting part comprises a first connecting rod 9 and a second connecting rod 10 made of steel pipes, the lengths of the first connecting rod 9 and the second connecting rod 10 are both 5.6 m, and the lower ends of the first connecting rod 9 and the second connecting rod 10 are both coated with a polyester anticorrosive coating, and the upper ends of the first connecting rod 9 and the second connecting rod 10 are respectively welded on the rotating shaft 5, so that the two connecting rods are located on the left and right sides of the rotating shaft 5 and form an included angle matched with the sand washing plate 2.

[0044] The four-layer sand washing plate 2 is arranged between the first connecting rod 9 and the second connecting rod 10 from top to bottom, and the two straight edges at the two ends of the arc-shaped edge are respectively welded with the first connecting rod 9 and the second connecting rod 10.

[0045] In use, the acid solution is injected into the sand washing tank 1, the servo motor 7 is started, the sand washing plate 2 reciprocally swings in the sand washing tank 1, the machine-made sand is thrown to the sand washing assembly through a mechanical discharge hopper or a conveying belt, the machine-made sand is removed from most of the impurities under the acid immersion of the pickling solution and the abrasion between the sand particles, meanwhile, the machine-made sand is screened by the sand washing plate 2 with different aperture leak holes under the action of gravity and the particle size of the machine-made sand, falls into the corresponding sand washing plate 2, realizes the grading and selection of the machine-made sand after impurity removal, and finally the machine-made sand particles with high cleanliness and high particle grading degree can be obtained.

[0046] The above examples are only illustrative of the present application and do not constitute a limitation on the protection scope of the present application, and any design same as or similar to the present application belongs to the protection scope of the present application.

Claims

1. A sand washing machine integrating screening and impurity removal, characterized in that: It includes a sand washing tank (1), a sand washing assembly, and a swing drive assembly; the sand washing assembly includes multiple sand washing plates (2) arranged at intervals along the height direction; the sand washing plates (2) are provided with drainage holes, and the diameter of the drainage holes on the multiple arc-shaped sand washing plates (2) decreases from high to low; the sand washing assembly is connected to the output end of the swing drive assembly; the swing drive assembly is used to drive the sand washing assembly to swing in the sand washing tank (1).

2. The integrated sand washing machine for screening and impurity removal as described in claim 1, characterized in that: The sand washing plate (2) is provided with a sand baffle on its side.

3. The integrated sand washing machine for screening and impurity removal as described in claim 1, characterized in that: The inner wall of the sand washing tank (1) is coated with an anti-corrosion coating.

4. The integrated sand washing machine for screening and impurity removal as described in claim 1, characterized in that: The sand washing tank (1) has a first arc plate (101) and a second arc plate (102) with different radii on the side of the tank opening; the arc surfaces of the first arc plate (101) and the second arc plate (102) are tangent to each other, forming a tapering structure on the side of the tank opening.

5. The integrated sand washing machine for screening and impurity removal as described in claim 1, characterized in that: The swing drive assembly includes a rotating shaft (5), a drive component, and a connector; one end of the rotating shaft (5) is connected to the output end of the drive component; one end of the connector is connected to the rotating shaft (5), and the other end is connected to the sand washing assembly.

6. The integrated sand washing machine for screening and impurity removal as described in claim 5, characterized in that: The driving component includes a servo motor (7) and a linkage mechanism (8); the output end of the servo motor (7) is coaxially connected to the input end of the linkage mechanism (8); the output end of the linkage mechanism (8) is coaxially connected to the rotating shaft (5).

7. The integrated sand washing machine for screening and impurity removal as described in claim 5, characterized in that: The connector includes a first connecting rod (9) and a second connecting rod (10); the first connecting rod (9) and the second connecting rod (10) are symmetrically arranged on both sides of the sand washing assembly; the two sides of the multi-layer sand washing plate (2) are connected to the first connecting rod (9) and the second connecting rod (10) in sequence along the length direction; one end of the first connecting rod (9) and the second connecting rod (10) are connected to the output end of the swing drive assembly.

8. The integrated sand washing machine for screening and impurity removal as described in claim 5, characterized in that: The swing drive assembly also includes a bearing (6); the bearing (6) is sleeved on the outside of the rotating shaft (5).

9. The integrated sand washing machine for screening and impurity removal as described in claim 1, characterized in that: It also includes a support frame (3); the sand washing tank (1) is disposed inside the support frame (3); the swing drive assembly is mounted on the support frame (3).

10. The integrated sand washing machine for screening and impurity removal as described in claim 9, characterized in that: The support frame (3) is provided with a guide rail (4) at its bottom; the sand washing tank (1) is slidably installed on the guide rail (4).

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