Water-sand separation device and method

Abstract

The application relates to a water-sand separation device and method, which belongs to the technical field of water-sand separation and comprises a supporting platform, wherein the supporting platform is provided with a treatment box; a cavity is arranged in the treatment box, a horizontal plate is fixed in the cavity, the horizontal plate divides the cavity into a stirring cavity and a separation cavity; the stirring cavity and the separation cavity are communicated through a leakage hole; a feeding funnel is fixed to the upper end of the treatment box; a stirring assembly is arranged in the stirring cavity; a separation plate is fixed in the separation cavity in an inclined mode, an arc-shaped net is fixed to the separation plate, a point on the separation plate is P, one end of the separation plate is O, the arc-shaped net is a minor arc with P as the center and PO as the radius, and the central angle of the arc-shaped net is 55-58 degrees; a container is arranged below the supporting platform, a circulating water pump is arranged on the container, the water inlet end of the circulating water pump is communicated with the container, and the water outlet end of the circulating water pump is located at the top of the feeding funnel; a clean water outlet is arranged on the container, and a valve is arranged on the clean water outlet. The device and the method can rapidly separate water sand containing fine sand particles through the wave block and the arc-shaped net.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water and sand separation, and particularly relates to a water and sand separation device and method. BACKGROUND

[0002] Sediment tank experiment refers to an experiment of arranging sediment in a laboratory artificial water tank and studying the water and sand movement law under the action of waves and water flow. In the sediment tank experiment, water and sand separation is an important task.

[0003] Traditional water and sand separation methods include sedimentation, filtration and centrifugation.

[0004] The sedimentation method needs to be placed for a period of time, so it takes a long time. The filtration method uses filter paper, and the water and sand passability is poor, and it also takes a long time. The centrifugation method can only remove large particle sand, and the separation effect of fine particle sand is not obvious, and the water and sand separation is not complete. SUMMARY

[0005] The water and sand separation device and method can quickly separate water and sand containing fine particle sand.

[0006] In order to achieve the above purpose, the water and sand separation device comprises a support platform, and a transparent treatment box is placed on the support platform; a cavity is arranged in the treatment box, a horizontal plate is fixed in the cavity, the horizontal plate divides the cavity into an upper stirring cavity and a lower separation cavity, a plurality of leakage holes are arranged on the horizontal plate, and the stirring cavity and the separation cavity are communicated through the leakage holes; a feeding funnel is fixed to the upper end of the treatment box, a through hole is arranged on the upper wall of the treatment box, and the feeding funnel is communicated with the stirring cavity through the through hole; a stirring assembly is arranged in the stirring cavity; a separation plate is fixedly arranged in the separation cavity, one end of the separation plate is located directly below the leakage hole, a wave block is fixed to the upper wall of the separation plate, an arc-shaped net is fixed to the separation plate, a point P is arranged on the separation plate, one end O of the separation plate is located directly below the leakage hole, the arc-shaped net is a minor arc with the point P as the center and the PO as the radius, and the central angle of the arc-shaped net is 55-58 degrees; a container is arranged below the support platform, a drainage hole is arranged on the lower wall of the treatment box, the separation cavity is communicated with the container through the drainage hole, a circulating water pump is arranged on the container, the water inlet end of the circulating water pump is connected and communicated with the container, and the water outlet end of the circulating water pump is located at the top of the feeding funnel; a clean water outlet is arranged on the container, and a valve is arranged on the clean water outlet.

[0007] Further, a first carbon strip is arranged in the stirring cavity, a second carbon strip is arranged at each wave trough of the wave block, the first carbon strip is electrically connected with the negative electrode of a power supply, and each second carbon strip is connected with the positive electrode of the power supply.

[0008] The first carbon strip and the second carbon strip form a path with the power supply after the stirring cavity and the separation cavity are filled with water. Thus, the water in the stirring cavity is an electrolyte. The fine sand has more sulfate ions, carbonate ions and chloride ions, so the fine sand is negatively charged. When the fine sand passes through the positively charged second carbon strip, the fine sand is adsorbed by the positive charge of the second carbon strip. Thus, the water flowing out of the clean water outlet does not contain fine sand, achieving the purpose of water and sand separation. Moreover, the wave trough position of the wave block causes the water to swirl at the wave trough position, which weakens the kinetic energy of the fine sand in the water under the action of the swirling, so that the fine sand is more likely to settle. The second carbon strip is arranged at the wave trough position, which further increases the resistance of the fine sand flow and makes the fine sand more likely to settle. If the second carbon strip is arranged at other positions, the distance between the second carbon strip and the fine sand is farther, the adsorption of the second carbon strip to the fine sand is not strong, and the resistance to the fine sand is small, so the fine sand is not easy to settle. Therefore, the arrangement of the second carbon strip at the wave trough position is determined by the two separation factors of the second carbon strip and the wave trough position.

[0009] Further, the stirring assembly has two groups, which are respectively denoted as an upper stirring assembly and a lower stirring assembly. The upper stirring assembly is installed on the upper surface wall of the treatment box, and the lower stirring assembly is installed on the upper surface wall of the horizontal plate. The rotation directions of the upper stirring assembly and the lower stirring assembly are opposite.

[0010] The stirring directions of the two stirring assemblies are opposite, which is more likely to cause uneven mixing of the water in the stirring cavity, and the water fluctuation caused by the mixing is larger, which can make the fine sand in each place contact the electrolyte water as soon as possible.

[0011] Further, the upper end of the arc-shaped net is provided with a flow guide plate. The lower end of the flow guide plate is fixedly connected with the upper end of the arc-shaped net, and the upper end of the flow guide plate is fixedly connected with the lower surface wall of the horizontal plate.

[0012] The flow guide plate mainly allows the water and sand mixture to pass through the arc-shaped net to flow from the right cavity to the left cavity in the early stage when the first carbon strip and the second carbon strip fail to form a closed loop. If there is no flow guide plate, the water and sand mixture will not pass through the arc-shaped net, and naturally, the water flowing out of the clean water outlet is turbid at the beginning. This is because the second carbon strip does not participate in adsorbing the fine sand at the beginning, and the arc-shaped net also does not participate in filtering the fine sand at regular intervals, resulting in that the fine sand is still mixed in the water. In order to avoid this situation, the circulating water pump needs to be kept working for a period of time after the first carbon strip and the second carbon strip form a loop, which prolongs the separation time. Therefore, the existence of the flow guide plate can maximize the filtering of the fine sand by the arc-shaped net when the second carbon strip is not powered on, and can ensure the separation effect of the fine sand without affecting the separation time.

[0013] Further, the first carbon strip is installed on the upper surface wall of the horizontal plate.

[0014] The water in the stirring cavity, from not passing the first carbon strip and filling the stirring cavity, both have a certain time difference T1, and the second carbon strip is powered on to adsorb the fine sand. That is, the first carbon strip is installed on the upper surface wall of the horizontal plate, which can maximize the power-on time of the second carbon strip and allow the second carbon strip to have more time to adsorb fine sand. If the first carbon strip is arranged at other positions, such as the upper surface wall of the stirring cavity, there is also a time difference T2 between the two, T2 is much smaller than T1, so it is not enough to completely adsorb the fine sand in the water.

[0015] A water and sand separation method, comprising the following steps: S1: closing the valve on the clean water outlet, opening the circulating water pump and the stirring assembly; pouring the water and sand mixture into the stirring cavity through the feeding funnel;

[0016] S2: observing the water level in the stirring cavity, stopping pouring the water and sand mixture into the feeding funnel when the water and sand mixture fills the stirring cavity; closing the circulating water pump;

[0017] S3: opening the valve on the clean water outlet, collecting the water flowing out of the clean water outlet, and observing the water level in the stirring cavity;

[0018] S4: determining whether to continue collecting clean water; if yes, when the water level in the stirring cavity is lower than the first carbon strip, continue pouring the water and sand mixture into the feeding funnel, and the water and sand mixture fills the stirring cavity; if no, until the water in the treatment tank is completely drained, and all the electrical appliances and the valve on the clean water outlet are closed.

[0019] Advantages:

[0020] 1. The wave blocks, arc-shaped nets, first carbon strips and second carbon strips are arranged, and the three means of the ability of the wave block valley position to deposit fine sand, the ability of the arc-shaped net to filter silt and the ability of the second carbon strip to adsorb fine sand are used together to separate fine sand from water from three aspects, so that the purpose of separating fine sand can be achieved and the time consumption is short.

[0021] 2. In this method, after the treatment tank is filled, clean water can be discharged through the clean water outlet. After the second carbon strip is powered on, the water is circulated by the water pump, and the separation of fine sand and water begins. The water and sand mixture passes the first carbon strip, and the water and sand solution fills the stirring cavity within this time difference. The second carbon strip always maintains the ability to adsorb fine sand, and does not need to intentionally fill the entire stirring cavity and then intentionally circulate the water pump for a period of time. Therefore, the overall use is more time-saving. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the device;

[0023] Figure 2 is a flowchart of the method.

[0024] 1, support platform; 2, processing box; 3, feeding funnel; 4, cross plate; 5, leakage hole; 6, upper stirring assembly; 7, lower stirring assembly; 8, separation plate; 9, wave block; 10, first carbon strip; 11, arc-shaped net; 12, guide plate; 13, second carbon strip; 14, drainage hole; 15, container; 16, circulating water pump; 17, clean water outlet. DETAILED DESCRIPTION

[0025] To make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. Embodiment 1

[0026] See Figure 1 A water-sand separation device includes a support platform 1, and a transparent processing box 2 is placed on the support platform 1.

[0027] The processing box 2 is internally provided with a cavity, and a feeding funnel 3 is fixed to the upper surface wall of the processing box 2. A cross plate 4 is arranged in the cavity, the inner wall of the cross plate 4 is fixedly connected to the inner wall of the cavity, and the cross plate 4 divides the cavity into an upper stirring cavity and a lower separation cavity. A through hole is formed in the upper surface wall of the processing box 2, and the feeding funnel 3 is in communication with the stirring cavity through the through hole. A leakage hole 5 is arranged on the cross plate 4, and the stirring cavity and the separation cavity are in communication through the leakage hole 5.

[0028] Two groups of stirring assemblies are arranged in the stirring cavity, and each stirring assembly includes a stirring motor and a stirring blade. The two groups of stirring assemblies are respectively an upper stirring assembly 6 and a lower stirring assembly 7 arranged one above the other.

[0029] As seen from the upper stirring assembly 6, the non-rotating shaft end of the stirring motor in the upper stirring assembly 6 is fixed to the upper surface wall of the processing box 2, the rotating shaft of the stirring motor is vertically arranged, and the rotating shaft of the stirring motor is arranged downward. The stirring motor is a waterproof motor. The stirring blade rotating shaft is coaxial with the rotating shaft of the stirring motor, and the stirring blade is fixed to the rotating shaft of the stirring motor.

[0030] As seen from the lower stirring assembly 7, the non-rotating shaft end of the stirring motor in the lower stirring assembly 7 is fixed to the upper surface wall of the cross plate 4, the rotating shaft of the stirring motor is vertically arranged, and the rotating shaft of the stirring motor is arranged upward. The stirring motor is a waterproof motor. The stirring blade rotating shaft is coaxial with the rotating shaft of the stirring motor, and the stirring blade is fixed to the rotating shaft of the stirring motor.

[0031] The rotating directions of the stirring motors in the upper stirring assembly 6 and the lower stirring assembly 7 are opposite. Specifically, in the embodiment, the rotating direction of the stirring motor in the upper stirring assembly 6 is clockwise, and the rotating direction of the stirring motor in the lower stirring assembly 7 is counterclockwise. In other embodiments, the rotating direction of the stirring motor in the upper stirring assembly 6 is counterclockwise, and the rotating direction of the stirring motor in the lower stirring assembly 7 is clockwise. In the embodiment, the rotating shafts of the two stirring motors in the upper stirring assembly 6 and the lower stirring assembly 7 coincide.

[0032] The separation plate 8 is fixed in the separation cavity and is arranged obliquely. Figure 1 As viewed from the perspective, one end of the separation plate 8 directly below the through hole is A, one end of the separation plate 8 away from the end A is O, and a point on the horizontal line passing through the point O is B, and the acute angle ∠A0B is 10 degrees.

[0033] The upper surface wall of the separation plate 8 is fixed with a wave block 9. Figure 1 As viewed from the perspective, the wave block 9 is in a wave shape. In the embodiment, the wave block 9 has four wave crests and three wave troughs, and each wave crest has the same size.

[0034] A first carbon strip 10 is fixed on the upper surface wall of the horizontal plate 4. A second carbon strip 13 is fixed at each of the wave troughs. The first carbon strip 10 is electrically connected to the negative electrode of a 0.8V power supply through a wire, each second carbon strip 13 is electrically connected to the positive electrode of the 0.8V power supply through a wire, and each second carbon strip 13 is connected in parallel with each other.

[0035] An arc-shaped net 11 is fixed on the upper surface wall of the O end of the separation plate 8. Figure 1 As viewed from the perspective, the arc-shaped net 11 is in a circular arc shape. Specifically, a point P on the separation plate 8 is taken as the center, and a circle with PO as the radius is drawn, and the circle is denoted as circle C. The arc-shaped net 11 is a minor arc on the circle C, and the central angle of the arc-shaped net 11 is 55-58 degrees. The lower end of the arc-shaped net 11 coincides with the O end of the separation plate 8, and the upper end of the arc-shaped net 11 is fixed with a flow guide plate 12, which is fixedly connected with the lower surface wall of the horizontal plate 4.

[0036] The flow guide plate 12 and the arc-shaped net 11 divide the separation cavity into a left cavity and a right cavity, and the left cavity and the right cavity are only connected through the arc-shaped net 11. The function of the flow guide plate 12 is to allow the sand and water mixture in the right cavity to be filtered by the arc-shaped net 11 before flowing into the left cavity.

[0037] A drainage hole 14 is formed in the support platform 1, and a container 15 is placed below the support platform 1. The left cavity is connected with the container 15 through the drainage hole 14, and the water and sand mixture entering the left cavity can flow into the container 15 naturally. The lower end of the container 15 is provided with a clean water outlet 17, and a valve is installed on the clean water outlet 17.

[0038] A circulating water pump 16 is arranged on the container 15, the water inlet end of the circulating water pump 16 is connected with and communicates with the container 15, and the water outlet end of the circulating water pump 16 is located at the top of the feeding funnel 3. The circulating water pump 16 is used to pump the water in the container 15 back to the feeding funnel 3. Example 2

[0039] In order to verify the filtering effect of the arc-shaped screen, the arc-shaped screen in Example 1 is replaced with a vertical screen to perform Test 1, and two groups of tests are performed respectively by using arc-shaped screens with different central angles, and each group of tests includes tests by using arc-shaped screens with multiple central angles.

[0040] Specifically, the mesh size of the arc-shaped screen or the vertical screen in each group of tests is the same. The water and sand mixture in the background art is taken from the sand water tank experiment, and the water and sand mixture is uniformly mixed. After the water and sand mixture is uniformly mixed, it is divided into several groups of equal amounts, and the ratio of sand to water in each group of water and sand mixture is the same. Because each group of water and sand mixture is equal, the mass of sand in each group of water and sand mixture is the same. Each group of water and sand mixture is used as a mixed sample to be separated in the above-mentioned test.

[0041] After each group of mixed samples is tested, the filtered water and sand mixture is finally dried and the sand is weighed. The heavier the mass of sand, the worse the filtering effect in the test.

[0042] The test results are shown in Table 1.

[0043] Table 1 Mass of sand after filtering in each group of tests

[0044]

[0045] As can be seen from Table 1, the mass of sand remaining after filtering by the arc-shaped screen with a central angle of 55-58 degrees is the smallest, so the filtering effect of the arc-shaped screen with a central angle of 55-58 degrees on the sand in the sample is the best. Example 3

[0046] See Figure 2 A water and sand separation method, comprising the following steps:

[0047] S1: Close the valve on the clean water outlet, open the two stirring assemblies, and then pour the water and sand mixture into the feeding funnel; the water and sand mixture flows from the feeding funnel, through the stirring cavity and the separation cavity, to the container; open the circulating water pump to continue pumping the water and sand mixture into the stirring cavity;

[0048] S2: Observe the water level in the stirring cavity, and stop pouring the water and sand mixture into the feeding funnel when the stirring cavity is filled with the water and sand mixture; close the circulating water pump.

[0049] S3: open the valve on the purified water outlet, collect the water flowing out of the purified water outlet, and observe the water level in the stirring cavity.

[0050] S4: determine whether to continue collecting purified water. If yes, when the water level in the stirring cavity is lower than the first carbon strip, continue pouring the water and sand mixture into the feed hopper, and fill the stirring cavity with the water and sand mixture. If no, continue until the water in the processing box is completely drained, and close all the valves on the electrical appliances and the purified water outlet.

[0051] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A water-sand separation device, characterized in that: The invention comprises a supporting platform on which a transparent processing box is placed; a cavity is provided in the processing box, and a horizontal plate is fixed in the cavity, which divides the cavity into a stirring chamber and a separation chamber on the upper and lower sides; A leakage hole is provided on the horizontal plate, and the stirring chamber and the separation chamber are connected through the leakage hole; a feed funnel is fixed on the upper end of the processing box, and a through hole is opened on the upper surface wall of the processing box, and the feed funnel is connected to the stirring chamber through the through hole; a stirring assembly is provided in the stirring chamber; A separation plate is fixed obliquely in the separation chamber, with the higher end of the separation plate located directly below the leak hole. A wave block is fixed to the upper surface wall of the separation plate, and an arc-shaped net is fixed to the separation plate. Let a point on the separation plate be P, and the lower end of the separation plate be O. The arc-shaped net is an inferior arc with P as the center and PO as the radius. The central angle of the arc-shaped net is 55-58 degrees. A container is provided under the supporting platform, a drainage hole is provided on the lower wall of the processing box, the separation chamber is connected with the container through the drainage hole, a circulating water pump is provided on the container, the water inlet end of the circulating water pump is connected with and connected to the container, and the water outlet end of the circulating water pump is located at the top of the feed funnel; a clean water outlet is provided on the container, and a valve is installed on the clean water outlet; a first carbon bar is provided in the stirring chamber, and a second carbon bar is fixed at each trough position of the wave block, the first carbon bar is electrically connected to the negative pole of the power supply, and each second carbon bar is connected in parallel to the positive pole of the power supply.

2. A water-sand separation device according to claim 1, characterized in that: There are two groups of stirring components, namely upper stirring components and lower stirring components. The upper stirring components are installed on the upper surface wall of the processing box, and the lower stirring components are installed on the upper surface wall of the horizontal plate. The upper stirring components and the lower stirring components rotate in opposite directions.

3. The water-sand separation device according to claim 2, characterized in that: The upper end of the arc-shaped net is provided with a guide plate, the lower end of the guide plate is fixedly connected to the upper end of the arc-shaped net, and the upper end of the guide plate is fixedly connected to the lower surface wall of the horizontal plate.

4. The water-sand separation device according to claim 2, characterized in that: The first carbon strip is installed on the upper surface wall of the transverse plate.

5. A water-sand separation method, based on the water-sand separation device according to claim 2, characterized in that: The following steps are included: S1: Close the valve on the purified water outlet, turn on the circulating water pump and stirring assembly; pour the water and sand mixture into the stirring chamber through the feed funnel; S2: Observe the water level in the mixing chamber. When the mixing chamber is filled with the water and sand mixture, stop pouring the water and sand mixture into the feed funnel and turn off the circulating water pump. S3: Open the valve on the clean water outlet, collect the water flowing out of the clean water outlet, and observe the water level in the stirring chamber; S4: Determine whether to continue collecting purified water; If yes, when the water level in the stirring chamber is lower than the first carbon bar, continue to pour the water and sand mixture into the feed funnel until the stirring chamber is filled with the water and sand mixture; if no, continue until the water in the treatment tank is completely drained, and close all electrical appliances and valves on the purified water outlet.

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