Sand water separator

Abstract

The sand-water separator disclosed by the application increases the overall strength of the conveying screw rod by arranging a central rotating shaft in the center of the spiral push plate, and the outer side wall of the spiral push plate is attached to the inner side wall of the U-shaped plate, so that the solid particles will not fall back into the separation tank during being pushed to move upwards. The water filter screen cylinder is arranged, so that the sand-water mixture driven by the spiral push plate to move upwards can first enter the water filter screen cylinder, at this time most of the liquid will enter the positioning cylinder through the water filter screen cylinder and be separated from the sand and gravel, and the continuously input sand-water mixture at the rear will push the sand and gravel at the front to continue to move upwards and separate from the majority, due to the linear rolling and circumferential rolling of the sand and gravel under the spiral pushing of the spiral push plate, the sand and gravel in the water filter screen cylinder perform multidirectional rolling in the circumferential direction and the axial direction, so that the water filter screen cylinder is subjected to multidirectional force, and the water filter screen cylinder performs multidirectional vibration in cooperation with the spring, so as to vibrate the sand and gravel separated from the liquid and strip the adhered liquid on the sand and gravel.

Description

Technical Field

[0001] This application relates to the field of environmental protection technology, and in particular to a sand-water separator. Background Technology

[0002] Sand-water separation is a key step in water treatment and industrial production. Its core objective is to separate solid particles such as sand and gravel from water through physical methods to prevent equipment wear and pipe blockage, and to achieve sand recycling. Currently, the mainstream sand-water separation equipment on the market mainly includes gravity sedimentation equipment, centrifugal separation equipment, filtration and interception equipment, and screw conveyor equipment.

[0003] The screw conveyor mainly feeds the sand-water mixture into the separator through a pipeline. The heavier solids, such as sand and gravel, will quickly settle to the bottom of the separator. The inclined screw pusher at the bottom of the separator will carry these solids along the inclined U-shaped plate to the top, where they will be discharged after being separated from the liquid in the separator. The liquid will be discharged through the overflow port set on one side of the top of the separator.

[0004] Most of these screw conveyor devices use shaftless screws. This means that during the process of pushing solids upwards, most of the solids, especially small particles, easily fall back into the separator from the empty central area. The liquid adhering to the solid particles is not effectively separated and will follow these solid particles out of the separator. As a result, a large amount of liquid remains on the solid particles after separation. In addition, the pipeline that transports the sand-water mixture is usually located directly above the separator. A large amount of sand-water mixture will fall rapidly into the same area of ​​the separator in a short period of time, causing a large number of solid particles to fall quickly and cause unnecessary impact on the shaftless screw directly below. Furthermore, the accumulation of a large number of solid particles in the same area will also increase the friction and load on the shaftless screw in this area, increasing the damage rate of the shaftless screw in this part. Utility Model Content

[0005] This application proposes a sand-water separator, which features a transfer screw that transfers a sand-water mixture, preventing sand from falling back into the separation tank. The transferred sand-water mixture enters a filter cartridge for separation. The filter cartridge vibrates under the rolling of sand to peel off the adhering liquid, and rotates under force for cleaning. An elastic airbag buffers and disperses falling sand, thus solving the problems of sand falling back, rapid damage to the screw blades, and incomplete liquid separation in existing screw conveyor sand-water separation equipment.

[0006] To achieve the above objectives, this application adopts the following technical solution: a sand-water separator, comprising a separation box, wherein an upwardly inclined U-shaped plate is provided at the bottom of the separation box; a transition groove is provided inside the separation box, a horizontal plate is provided at the opening of the transition groove, and an inlet pipe is provided at the center of the horizontal plate; the inclined top of the U-shaped plate is away from the separation box, and a transfer screw is movably sleeved inside the U-shaped plate; the transfer screw includes a central rotating shaft at the center and a spiral push plate sleeved outside the central rotating shaft; a positioning cylinder is sleeved outside the inclined top of the U-shaped plate, and a filter cylinder is provided inside the positioning cylinder; the filter cylinder includes symmetrical positioning rings on both sides and a filter screen cylinder disposed between the two positioning rings; and evenly distributed springs are provided on the inner wall of the positioning cylinder.

[0007] Preferably, a drain outlet is provided at the center of the top of one side of the transition groove, a filter screen is provided inside the drain outlet, and a drainage pipe is provided at the bottom of the positioning cylinder and connected to the transition groove.

[0008] Preferably, the transition trough is inclined on the side facing the drain outlet, and the bottom center of the separation box and the center of the inclined side are both open. An inclined U-shaped plate is set at the opening, and the inclination angle of the U-shaped plate is the same as the inclination angle of the inclined side of the transition trough.

[0009] Preferably, the positioning cylinder is provided with a connecting ring plate on the side near the U-shaped plate, which is connected to the inclined top of the U-shaped plate.

[0010] Preferably, an elastic rubber ring I is provided on the inner wall of the positioning ring near the U-shaped plate and connected to the outer side of the inclined top of the U-shaped plate, and an elastic rubber ring II is provided on the outer wall of the positioning ring away from the U-shaped plate and connected to the inner wall of the inclined top of the positioning cylinder.

[0011] Preferably, the end of the spring near the filter screen cylinder is attached to the outer wall of the filter screen cylinder.

[0012] Preferably, the inlet pipe is located near the drain outlet, and an elastic airbag is provided below the inlet pipe. The elastic airbag is elliptical in shape and floats on the liquid surface of the transition tank.

[0013] Preferably, the bottom of the inner cavity of the positioning cylinder is provided with symmetrical load-bearing airbags.

[0014] Preferably, a flexible air tube is provided at the bottom of the elastic airbag, and the other end of the flexible air tube is connected to the load-bearing airbag.

[0015] The sand-water separator provided in this application increases the overall strength of the transfer screw by setting a central rotating shaft at the center of the spiral pusher plate, and the outer wall of the spiral pusher plate is in close contact with the inner wall of the U-shaped plate, so that solid particles will not fall back into the separation box during the process of being pushed upward.

[0016] Meanwhile, a filter screen is installed at the outlet of the U-shaped plate, allowing the sand-water mixture that is pushed upward by the spiral pusher to enter the filter screen first. At this time, most of the liquid will directly pass through the filter screen into the positioning cylinder and separate from the sand and gravel. The sand-water mixture continuously input from behind will push the sand and gravel in front to continue to move upward and separate from the main force. As the sand and gravel roll in a straight line and circumferentially under the spiral push of the spiral pusher, the sand and gravel roll in multiple directions in the circumferential and axial directions within the filter screen, causing the filter screen to be subjected to multi-directional forces. With the help of the spring, the filter screen vibrates in multiple directions, thereby vibrating the sand and gravel that have separated from the liquid and peeling off the liquid adhering to these sand and gravel.

[0017] Meanwhile, an elastic airbag is installed directly below the inlet pipe, so that the sand and gravel mixture will impact the elastic airbag before falling into the transition tank. Due to the elastic force of the airbag and the influence of the inclined surface, the sand and water mixture will spread outwards, slowing down the incoming sand and gravel, reducing the impact damage of the settled sand and gravel to the transfer screw, and at the same time, dispersing the settled sand and gravel, expanding the accumulation range of the settled sand and gravel, reducing the stress on a single area of ​​the transfer screw, and further reducing the damage to the transfer screw. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the positioning cylinder in this utility model; Figure 4 This is a schematic diagram of the structure of the filter cartridge in this practical application.

[0020] The components are as follows: 1. Separation box; 2. Transition tank; 21. Drain outlet; 3. Horizontal plate; 31. Liquid inlet pipe; 4. U-shaped plate; 5. Central rotating shaft; 51. Spiral push plate; 6. Positioning cylinder; 61. Connecting ring plate; 7. Positioning ring; 71. Elastic rubber ring I; 72. Elastic rubber ring II; 8. Water filter screen cylinder; 9. Spring; 10. Drainage pipe; 11. Elastic airbag; 12. Soft air tube; 13. Load-bearing airbag. Detailed Implementation

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

[0022] Example 1 Please see Figures 1 to 2 A sand-water separator includes a separation box 1, a transition tank 2 is provided in the separation box 1, a horizontal plate 3 is fixedly connected to the opening of the transition tank 2, and an inlet pipe 31 is fixedly connected to the center of the horizontal plate 3, so that the sand-water mixture can fall into the transition tank 2 through the inlet pipe 31, the solids settle to the bottom of the transition tank 2, and the liquid is suspended in the transition tank 2.

[0023] See Figures 1 to 2 A drain outlet 21 is provided at the center of the top of one side of the transition tank 2. A filter screen is fixedly sleeved inside the drain outlet 21, so that the suspended liquid can be discharged from the transition tank 2 through the drain outlet 21. The presence of the filter screen will prevent suspended particles that have not yet settled from being discharged through the drain outlet 21.

[0024] See Figures 1 to 2 The transition channel 2 is inclined on the side opposite the drain outlet 21.

[0025] See Figures 1 to 2 The bottom center of the separation box 1 and the center of the inclined side are both open, and an inclined U-shaped plate 4 is fixedly sleeved at the opening. The inclination angle of the U-shaped plate 4 is the same as the inclination angle of the inclined side of the transition groove 2, so that the U-shaped plate 4 can provide a channel for solids to leave the separation box 1.

[0026] See Figures 1 to 2 The top opening of the U-shaped plate 4 is flush with the bottom opening of the separation box 1, so that the settled solids can directly enter the U-shaped plate 4. Other solids that do not enter the U-shaped plate 4 are also on the same plane as the opening of the U-shaped plate 4 in the separation box 1, and can still enter the U-shaped plate 4 under the disturbance of the subsequent liquid flow.

[0027] See Figures 1 to 2 The inclined top of the U-shaped plate 4 is far away from the separation box 1, so that the lifted solid-liquid mixture can quickly leave the separation box 1. A cover plate can be installed at the opening of the U-shaped plate 4 outside the separation box 1.

[0028] The U-shaped plate 4 is fitted with a transfer screw.

[0029] See Figures 1 to 3The transfer screw includes a central rotating shaft 5 at the center and a spiral pusher plate 51 fixedly sleeved on the outside of the central rotating shaft 5. The central rotating shaft 5 drives the spiral pusher plate 51 to rotate continuously, so that the spiral pusher plate 51 carries the surrounding solid-liquid mixture and continuously lifts it up along the inner cavity of the U-shaped plate 4, separating it from the separation box 1.

[0030] See Figures 1 to 2 The inclined bottom end of the central rotating shaft 5 passes through the bottom of the side of the separation box 1 where the drain outlet 21 is opened. A motor is fixedly connected to the bottom of the side of the separation box 1 where the drain outlet 21 is opened. The output end of the motor is fixedly connected to the inclined bottom end of the central rotating shaft 5, and the motor provides rotational power to the central rotating shaft 5.

[0031] See Figures 1 to 3 A positioning cylinder 6 is sleeved on the outer side of the inclined top of the U-shaped plate 4. A connecting ring plate 61 is fixedly sleeved on the side of the positioning cylinder 6 near the U-shaped plate 4. The connecting ring plate 61 is fixedly sleeved on the inclined top of the U-shaped plate 4, so that the positioning cylinder 6 is fixed in position with the U-shaped plate 4 through the connecting ring plate 61. The presence of the connecting ring plate 61 also allows the liquid falling into the positioning cylinder 6 to be blocked by the connecting ring plate 61.

[0032] See Figure 3 A filter cylinder is movably sleeved inside the positioning cylinder 6, and the axes of the filter cylinder and the positioning cylinder 6 coincide with the axis of the central rotating shaft 5.

[0033] See Figures 3 to 4 The filter cylinder includes two symmetrical positioning rings 7 on both sides and a filter screen cylinder 8 that is movably sleeved between the two positioning rings 7.

[0034] See Figures 3 to 4 The circumferential cross-section at the connection between the positioning ring 7 and the filter screen cylinder 8 is concave, while the circumferential cross-section at the connection between the filter screen cylinder 8 and the positioning ring 7 is convex, ensuring that the positioning ring 7 and the filter screen cylinder 8 will not separate when they rotate.

[0035] See Figure 3 An elastic rubber ring I 71 is fixedly sleeved on the inner wall of the positioning ring 7 near the U-shaped plate 4. The elastic rubber ring I 71 is fixedly sleeved on the outer side of the inclined top of the U-shaped plate 4, so that the solid-liquid mixture entering the filter cylinder through the U-shaped plate 4 can be blocked by the elastic rubber ring I 71 and will not fall directly into the positioning cylinder 6. The presence of the elastic rubber ring I 71 also provides space for the filter cylinder to vibrate in the axial direction. An elastic rubber ring II 72 is fixedly sleeved on the outer wall of the positioning ring 7 away from the U-shaped plate 4. The elastic rubber ring II 72 is fixedly sleeved on the inner wall of the inclined top of the positioning cylinder 6, so that the sand and gravel leaving from the opening at the top of the filter cylinder can be blocked by the elastic rubber ring II 72 and will not fall into the positioning cylinder 6. The presence of the elastic rubber ring II 72 also provides space for the filter cylinder to vibrate in the direction of the positioning cylinder 6.

[0036] See Figure 3 The inner wall of the positioning cylinder 6 is fixedly connected with evenly distributed springs 9. A filter screen cylinder 8 is set at the outlet of the U-shaped plate 4, so that the sand-water mixture moved upward by the spiral pusher plate 51 can first enter the filter screen cylinder 8. At this time, most of the liquid will directly enter the positioning cylinder 6 through the filter screen cylinder 8 and separate from the sand and gravel. At this time, the sand-water mixture continuously input from the rear will push the sand and gravel in front to continue to move upward and separate from the main group. As the sand and gravel roll in a straight line and circumferentially under the spiral pusher plate 51, the sand and gravel roll in multiple directions in the circumferential and axial directions in the filter screen cylinder 8, causing the filter screen cylinder 8 to be subjected to multi-directional forces. With the help of the springs 9, the filter screen cylinder 8 vibrates in multiple directions, thereby vibrating the sand and gravel that have separated from the liquid and peeling off the liquid adhering to these sand and gravel.

[0037] It should be noted that because the filter cartridge is tilted, the sand-water mixture inside the filter cartridge is also tilted, with most of it closer to the bottom of the filter cartridge. In other words, the force towards the bottom is greater.

[0038] See Figures 1 to 3 The bottom of the positioning cylinder 6 is fixedly connected to a drainage pipe 10, and the other end of the drainage pipe 10 is fixedly inserted through the separation box 1 into the transition tank 2, so that the liquid entering the positioning cylinder 6 can flow back into the transition tank 2 through the drainage pipe 10.

[0039] Example 2 Please see Figure 3 Based on Embodiment 1, the end of the spring 9 near the filter screen cylinder 8 is attached to the outer wall of the filter screen cylinder 8, so that the filter screen cylinder 8 is not fixed by the spring 9. The sand and gravel roll in multiple directions in the circumferential and axial directions inside the filter screen cylinder 8. Due to the existence of friction, the filter screen cylinder 8 can rotate in the circumferential direction to a certain extent, thereby changing the specific position of the holes in the filter screen cylinder 8. When the position of each hole changes, it can impact the spring 9 and the supporting air bladder 13 at different circumferential positions in multiple directions. This allows the top of the spring 9 to impact the hole in multiple directions. Combined with the expansion and compression of the supporting air bladder 13 inside the hole and the friction of the sand and water mixture inside, the hole is cleaned to a certain extent.

[0040] See Figures 1 to 2 The inlet pipe 31 is close to the drain outlet 21, and an elastic airbag 11 is provided below the inlet pipe 31.

[0041] See Figures 1 to 2The elastic airbag 11 is elliptical in shape and floats on the liquid surface of the transition tank 2. Before the sand and gravel mixture falls into the transition tank 2, it will first impact the elastic airbag 11. Due to the elastic force of the elastic airbag 11 and the influence of the inclined surface, the sand and water mixture will spread outwards, slowing down the incoming sand and gravel, reducing the impact damage of the settled sand and gravel to the transfer screw, and at the same time, dispersing the settled sand and gravel, expanding the accumulation range of the settled sand and gravel, reducing the stress on a single area of ​​the transfer screw, and further reducing the damage to the transfer screw.

[0042] It should be noted that since most of the liquid flows to the drain outlet 21, the elastic airbag 11 has a force that moves towards the drain outlet 21. Combined with the opposite pull of the flexible air tube 12, the elastic airbag 11 can always be located below and around the liquid inlet tube 31.

[0043] See Figures 1 to 3 The bottom of the elastic airbag 11 is fixedly connected to a soft air tube 12, which passes through the drainage tube 10 into the positioning cylinder 6.

[0044] See Figure 3 The bottom of the inner cavity of the positioning cylinder 6 is fixedly connected to symmetrical load-bearing airbags 13. The load-bearing airbags 13 are fixedly connected to the flexible air tube 12, so that when the filter screen cylinder 8 vibrates, it can intermittently squeeze the load-bearing airbags 13, causing the load-bearing airbags 13 to intermittently compress and expand. When the load-bearing airbags 13 are compressed by pressure, part of the gas inside will be input into the elastic airbags 11 through the flexible air tube 12, causing the elastic airbags 11 to expand and impact the falling solid-liquid mixture, increasing the degree of sand and gravel scattering. After receiving the impact, the elastic airbags 11 will be compressed again, causing part of the gas inside the elastic airbags 11 to rush into the load-bearing airbags 13 through the flexible air tube 12, causing the load-bearing airbags 13 to expand and apply an upward elastic force to the filter screen cylinder 8.

[0045] It should be noted that there are various situations in which the elastic airbag 11 and the load-bearing airbag 13 change. For example, when the mass of sand and gravel in the input sand-water mixture is small per unit time, while the mass of sand and gravel in the filter screen cylinder 8 is large, and the vibration is greater, the elastic airbag 11 mainly receives the gas output from the load-bearing airbag 13. When the mass of sand and gravel in the input sand-water mixture is large per unit time, and the mass of sand and gravel in the filter screen cylinder 8 is also large, the elastic airbag 11 and the load-bearing airbag 13 are in a relatively stable state (it is difficult for the two places to be subjected to completely the same force).

Claims

1. A sand-water separator, characterized in that, Includes a separation box (1), the bottom of which is provided with an upwardly inclined U-shaped plate (4); The separation box (1) is provided with a transition groove (2), and a horizontal plate (3) is provided at the opening of the transition groove (2). An inlet pipe (31) is provided at the center of the horizontal plate (3). The inclined top of the U-shaped plate (4) is away from the separation box (1), and a transfer screw is movably sleeved inside the U-shaped plate (4); The transfer screw includes a central rotating shaft (5) at the center and a spiral push plate (51) sleeved on the outside of the central rotating shaft (5). A positioning cylinder (6) is sleeved on the outer side of the inclined top of the U-shaped plate (4), and a filter cylinder is provided inside the positioning cylinder (6). The filter cylinder includes two symmetrical positioning rings (7) on both sides and a filter screen cylinder (8) disposed between the two positioning rings (7). The inner wall of the positioning cylinder (6) is provided with evenly distributed springs (9).

2. A sand-water separator according to claim 1, characterized in that, A drain outlet (21) is provided at the top center of one side of the transition groove (2). A filter screen is provided inside the drain outlet (21). A drainage pipe (10) is provided at the bottom of the positioning cylinder (6) and is connected to the transition groove (2).

3. A sand-water separator according to claim 2, characterized in that, The transition groove (2) is inclined on the side facing the drain outlet (21). The bottom center of the separation box (1) and the center of the inclined side are both open. The inclined U-shaped plate (4) is set at the opening. The inclination angle of the U-shaped plate (4) is the same as the inclination angle of the inclined side of the transition groove (2).

4. A sand-water separator according to claim 1, characterized in that, The positioning cylinder (6) is provided with a connecting ring plate (61) on the side near the U-shaped plate (4) and connected to the inclined top of the U-shaped plate (4).

5. A sand-water separator according to claim 4, characterized in that, An elastic rubber ring I (71) is provided on the inner wall of the positioning ring (7) near the U-shaped plate (4) and is connected to the outer side of the inclined top of the U-shaped plate (4). An elastic rubber ring II (72) is provided on the outer wall of the positioning ring (7) away from the U-shaped plate (4) and is connected to the inner wall of the inclined top of the positioning cylinder (6).

6. A sand-water separator according to claim 1, characterized in that, The end of the spring (9) near the filter screen cylinder (8) is attached to the outer wall of the filter screen cylinder (8).

7. A sand-water separator according to claim 2, characterized in that, The inlet pipe (31) is close to the drain outlet (21), and an elastic airbag (11) is provided below the inlet pipe (31). The elastic airbag (11) is elliptical and floats on the liquid surface of the transition tank (2).

8. A sand-water separator according to claim 7, characterized in that, The bottom of the inner cavity of the positioning cylinder (6) is provided with symmetrical load-bearing airbags (13).

9. A sand-water separator according to claim 8, characterized in that, The bottom of the elastic airbag (11) is provided with a soft air tube (12), and the other end of the soft air tube (12) is connected to the load-bearing airbag (13).

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