A non-adhesive wet sand and gravel washing screen

Abstract

This utility model discloses an anti-adhesion wet sand and gravel washing screen, including a washing screen body. A screen plate is fixedly installed at the bottom of the washing screen body, and multiple sets of screen holes are evenly opened on the screen plate. A rotating shaft is fixedly installed on both sides of the washing screen body, and a bearing seat is installed on the outer side of the rotating shaft. The bottom sides of the bearing seat are provided with slots. An anti-adhesion swing mechanism is installed on the outer circumference of the rotating shaft. This anti-adhesion wet sand and gravel washing screen, through the swing generated by the washing screen body under the action of the anti-adhesion swing mechanism, will cause the sand and gravel to continuously roll and collide, breaking up the small sticky clumps that have formed, so that the sand and gravel particles are always in a dynamic dispersion state, reducing the continuous contact time with the screen body surface, and further reducing the risk of adhesion caused by static adhesion. The two work together to effectively prevent sand and gravel adhesion from both reducing adhesion conditions and destroying adhesion states.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel processing, specifically to a wet sand and gravel washing screen that prevents adhesion. Background Technology

[0002] The working principle of a wet sand and gravel washing screen is to purify and classify sand and gravel through the synergistic effect of mechanical motion and water flow. Collisions and friction between sand and gravel particles loosen and separate clumps of material, removing impurities such as mud and stone powder from their surfaces. Simultaneously, the built-in water spray system continuously sprays clean water onto the material. The water flow dissolves or washes away soluble impurities into a suspension. Larger sand and gravel particles pass through the screen or drum screen, becoming clean and qualified products, while wastewater containing impurities and substandard oversized particles are discharged from the slag outlet, ultimately completing the sand and gravel washing and classification process. In this process, mechanical motion disperses the material and enhances friction between particles, while the water flow dissolves, washes away, and separates impurities; the combination of these two processes achieves highly efficient purification.

[0003] Wet sand and gravel washing screens disperse sand and gravel through mechanical vibration or rotation, while simultaneously washing with water to peel off and remove dirt and impurities from the surface of the sand and gravel, achieving purification and screening. However, sand tends to adhere during use, mainly because sand contains clay and other minerals that react with water to form a sticky colloid. Furthermore, fine sand has a large specific surface area and strong adsorption capacity. Improper moisture control or unreasonable equipment parameters further contribute to sand adhering easily to the equipment surface. Utility Model Content

[0004] The purpose of this invention is to provide an anti-adhesion wet sand and gravel washing screen to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, an anti-adhesion wet sand and gravel washing screen is provided, comprising a washing screen body, a screen plate fixedly installed at the bottom of the washing screen body, a plurality of screen holes evenly opened on the screen plate, a rotating shaft fixedly installed on both sides of the washing screen body, a bearing seat installed on the outer side of the rotating shaft, slots opened on both sides of the bottom of the bearing seat, an anti-adhesion swing mechanism installed on the outer circumference of the rotating shaft, a drive motor installed on the anti-adhesion swing mechanism, an active arm fixedly installed at the end of the output shaft of the drive motor, a rocker arm movably installed on the upper side of the active arm through a pin, and a transmission seat fixedly installed at the end of the rocker arm.

[0006] Preferably, a screen plate is fixedly installed at the bottom of the main body of the washing screen. The screen plate is an arc-shaped structure made of metal and has a blind area, which is triangular in shape.

[0007] Preferably, a partition is fixedly installed on the main body of the cleaning screen, and multiple sets of atomizing nozzles are installed on the front and back plates of the main body of the cleaning screen. The ends of the atomizing nozzles are inclined, and the water inlet ends of the multiple sets of atomizing nozzles are connected to the booster pipe.

[0008] Preferably, the anti-adhesion swing mechanism includes a drive base, a drive column, a transmission base, a rocker arm, an active arm, and a drive motor, with the rotating shaft fixedly connected to the drive column via the drive base.

[0009] Preferably, the drive column is connected to the active arm via a transmission seat and a rocker arm, and the rocker arm and the active arm are in an "L" shape.

[0010] Preferably, the main body of the cleaning screen reciprocates around the rotating shaft via an anti-adhesion swing mechanism, and the transmission seat has an insertion hole inside, through which a drive column is inserted.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This solution uses a large amount of atomized water sprayed from two rows of atomizing nozzles on both sides to form a fine water flow. This can reduce the sticky water film formed on the surface of sand and gravel due to excessive water accumulation by continuous rinsing, and prevent fine sand particles from sticking together or adhering to the surface of the screen due to water film adsorption. At the same time, the uniform coverage of the atomized water flow can ensure that every grain of sand and gravel is fully wetted and rinsed, preventing local impurities from forming a binding core.

[0013] 2. This solution utilizes the oscillation of the main body of the cleaning screen under the action of the anti-adhesion oscillation mechanism to cause the sand and gravel to continuously roll and collide, breaking up the small sticky clumps that have formed. This keeps the sand and gravel particles in a dynamic and dispersed state, reducing the continuous contact time with the screen surface and further reducing the risk of adhesion caused by static adhesion. The synergistic effect of both measures effectively prevents sand and gravel adhesion by reducing adhesion conditions and destroying adhesion states. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the anti-adhesion swing mechanism of this utility model.

[0016] Figure 3 for Figure 1 A bottom view;

[0017] Figure 4 for Figure 1 Side view;

[0018] Figure 5 for Figure 2 A bottom view;

[0019] Numbered in the diagram: 1. Main body of the cleaning screen; 11. Partition plate; 12. Screen plate; 13. Blind zone; 14. Screen hole; 2. Pressure booster pipe; 21. Atomizing nozzle; 3. Rotating shaft; 4. Bearing seat; 5. Anti-adhesion swing mechanism; 51. Drive seat; 52. Drive column; 53. Transmission seat; 54. Rocker arm; 55. Active arm; 56. Drive motor. Detailed Implementation

[0020] Please see Figure 1-5 This utility model provides an anti-adhesion wet sand and gravel washing screen, including a washing screen body 1. A screen plate 12 is fixedly installed at the bottom of the washing screen body 1. Multiple sets of screen holes 14 are evenly opened on the screen plate 12. Rotating shafts 3 are fixedly installed on both sides of the washing screen body 1. Bearing seats 4 are installed on the outer side of the rotating shafts 3. Slots are opened on both sides of the bottom of the bearing seats 4. An anti-adhesion swing mechanism 5 is installed on the outer circumference of the rotating shafts 3. A drive motor 56 is installed on the anti-adhesion swing mechanism 5. An active arm 55 is fixedly installed at the end of the output shaft of the drive motor 56. A rocker arm 54 is movably installed on the upper side of the active arm 55 through a pin. A transmission seat 53 is fixedly installed at the end of the rocker arm 54.

[0021] Working principle: The sand and gravel to be cleaned and filtered are put into the interior of the washing screen body 1. At this time, two rows of atomizing nozzles 21 are set on both sides of the washing screen body 1. A large amount of water is sprayed out from the atomizing nozzles 21 to clean the sand and gravel. At the same time, the washing screen body 1 can swing under the action of the anti-adhesion swing mechanism 5. The large amount of atomized water sprayed from the two rows of atomizing nozzles 21 on both sides can form a fine water flow. This can reduce the sticky water film formed by excessive water accumulation on the surface of the sand and gravel through continuous rinsing, and prevent fine sand particles from sticking together or adhering to each other due to water film adsorption. On the surface of the screen body, the uniform coverage of the atomized water flow allows each grain of sand to be fully soaked and washed, preventing local impurities from forming adhesion cores. At the same time, the oscillation of the screen body 1 under the action of the anti-adhesion oscillation mechanism 5 will cause the sand to roll and collide continuously, breaking the small adhesion clumps that have already formed, so that the sand particles are always in a dynamic dispersion state, reducing the continuous contact time with the screen body surface, and further reducing the risk of adhesion caused by static adhesion. The two work together to effectively prevent sand adhesion from both reducing adhesion conditions and destroying adhesion state.

[0022] In a preferred embodiment, a screen plate 12 is fixedly installed at the bottom of the washing screen body 1. The screen plate 12 is an arc-shaped structure made of metal. A blind area 13 is provided on the screen plate 12, and the blind area 13 is triangular.

[0023] The screen plate 12 at the bottom of the main body 1 of the washing screen is arc-shaped, and a blind zone 13 is provided on the screen plate 12. The blind zone 13 is triangular. The arc-shaped screen plate 12 at the bottom of the main body 1 of the washing screen allows the sand and gravel to slide and roll naturally along the arc surface under the action of gravity and oscillation, reducing local retention. The triangular blind zone 13 can use its corner structure to break the uniform distribution of sand and gravel on the screen plate 12, forming local disturbance, causing the accumulated sand and gravel to disperse to the periphery, avoiding adhesion due to continuous compression and sticking. At the same time, the triangular blind zone 13 can adapt to the curvature change of the arc-shaped screen plate 12. Without affecting the overall screening area of ​​the screen plate 12, the material flowability is enhanced by structural differences, reducing the long-term adhesion of fine sand on the edge of the screen hole 14, further reducing the risk of adhesion. It can also use the stability of the triangle to improve the structural strength of the screen plate 12, preventing deformation due to long-term vibration and load, and ensuring the stability of screening and anti-sticking effects.

[0024] A partition plate 11 is fixedly installed on the main body 1 of the cleaning screen. Multiple sets of atomizing nozzles 21 are installed on the front and back plates of the main body 1 of the cleaning screen. The ends of the atomizing nozzles 21 are inclined. The water inlet ends of the multiple sets of atomizing nozzles 21 are all connected to the booster pipe 2.

[0025] The anti-adhesion swing mechanism 5 includes a drive base 51, a drive column 52, a transmission base 53, a rocker arm 54, an active arm 55, and a drive motor 56. The rotating shaft 3 is fixedly connected to the drive column 52 through the drive base 51.

[0026] The drive column 52 is connected to the drive arm 55 via the transmission seat 53 and the rocker arm 54. The rocker arm 54 and the drive arm 55 are in an "L" shape.

[0027] In a preferred embodiment, the washing screen body 1 reciprocates around the rotating shaft 3 via the anti-adhesion swing mechanism 5. The transmission seat 53 has an insertion hole inside, and a drive column 52 is inserted inside the insertion hole.

[0028] After the sand and gravel that need to be cleaned and filtered are put into the main body 1 of the cleaning screen, the large amount of water sprayed by the two rows of atomizing nozzles 21 on both sides can form a fine and uniform water flow through the atomization effect. This not only expands the contact area with the sand and gravel to thoroughly wash the surface impurities, but also reduces the sand and gravel splashing or fine sand loss caused by excessive water flow impact. The oscillation generated by the anti-adhesion oscillation mechanism 5 can drive the sand and gravel to roll and move continuously, preventing the sand and gravel from sticking to the screen surface for a long time. At the same time, it enhances the mutual friction between sand and gravel particles, helping to peel off stubborn impurities. It can also use the centrifugal force and gravity generated by the oscillation to carry away impurities in time with the water flow, effectively reducing the adhesion problem caused by sand and gravel retention and sticking, and improving cleaning efficiency and cleanliness.

[0029] The anti-adhesion swing mechanism 5 works as follows: the output shaft of the drive motor 56 drives the active arm 55 to rotate, the active arm 55 drives the rocker arm 54 to move, and the drive column 52 is inserted inside the transmission seat 53 at the end of the rocker arm 54, which can drive the drive column 52 to swing back and forth, and drive the washing screen body 1 to swing back and forth through the drive seat 51 and the rotating shaft 3.

Claims

1. A wet sand and gravel cleaning screen with anti-adhesion, comprising a cleaning screen body (1), characterized in that: A screen plate (12) is fixedly installed at the bottom of the main body (1) of the cleaning screen. Multiple sets of screen holes (14) are evenly opened on the screen plate (12). A rotating shaft (3) is fixedly installed on both sides of the main body (1). A bearing seat (4) is installed on the outer side of the rotating shaft (3). A slot is opened on both sides of the bottom of the bearing seat (4). An anti-adhesion swing mechanism (5) is installed on the outer circumference of the rotating shaft (3). A drive motor (56) is installed on the anti-adhesion swing mechanism (5). An active arm (55) is fixedly installed at the end of the output shaft of the drive motor (56). A rocker arm (54) is movably installed on the upper side of the active arm (55) through a pin. A transmission seat (53) is fixedly installed at the end of the rocker arm (54).

2. A wet abrasive cleaning screen according to claim 1, wherein: The bottom of the main body (1) of the cleaning screen is fixedly provided with a screen plate (12). The screen plate (12) is an arc-shaped structure made of metal. A blind area (13) is provided on the screen plate (12). The blind area (13) is triangular.

3. A wet abrasive cleaning screen according to claim 1, wherein: A partition plate (11) is fixedly installed on the main body (1) of the cleaning screen. Multiple sets of atomizing nozzles (21) are installed on the front and back plates of the main body (1). The ends of the atomizing nozzles (21) are inclined. The water inlet ends of the multiple sets of atomizing nozzles (21) are connected to the booster pipe (2).

4. A wet abrasive cleaning screen according to claim 1, wherein: The anti-adhesion swing mechanism (5) includes a drive seat (51), a drive column (52), a transmission seat (53), a rocker arm (54), an active arm (55), and a drive motor (56). The rotating shaft (3) is fixedly connected to the drive column (52) through the drive seat (51).

5. A wet abrasive cleaning screen according to claim 4, wherein: The drive column (52) is connected to the active arm (55) via the transmission seat (53) and the rocker arm (54), and the rocker arm (54) and the active arm (55) are in an "L" shape.

6. A wet abrasive cleaning screen according to claim 4, wherein: The main body (1) of the cleaning screen reciprocates around the rotating shaft (3) via the anti-adhesion swing mechanism (5). The transmission seat (53) has an insertion hole inside, and a drive column (52) is inserted inside the insertion hole.

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