A precision sand removal device

Abstract

This invention discloses a precision sand removal device, comprising several vertical support members, on which are mounted evenly spaced swirl plates. Each swirl plate has a funnel-shaped structure, with a circular discharge port at the center and a sand collection box at the bottom. The device also includes a feed cylinder, with its inlet higher than the uppermost swirl plate. Inside the feed cylinder are feed pipes corresponding to the positions of all the swirl plates, placed horizontally and connected to the swirl plates in a tangential configuration. This invention achieves dual functions of swirl sand removal and sedimentation sand removal. Swirl sand removal utilizes the impact force of wastewater to create a swirling current on the swirl plates, while sedimentation sand removal uses a lifting mechanism and baffles to create a sedimentation zone on the swirl plates. The device has a reasonable structural design and can be used for both functions.

Description

Technical Field

[0001] This invention relates to the field of sand removal equipment technology in the environmental protection field, specifically a precision sand removal device. Background Technology

[0002] In the existing technology, the principle of the cyclone grit removal device in the grit removal device is to use centrifugal force to accelerate the separation of sand particles. Its advantages are fast water flow and high separation efficiency, and it is especially suitable for the removal of fine sand. Specifically, the sewage enters the circular pool from the tangential direction, forming a vortex. Under the action of centrifugal force, the sand particles are thrown towards the pool wall and settle down to the bottom sand hopper along the pool wall, and are discharged by the sand pump.

[0003] For example, the "hydraulic vortex grit removal device and hydraulic vortex grit removal tank" disclosed in the technical solution of authorization announcement number CN208161187U removes grit by generating vortices through a filter tray.

[0004] In addition, existing stacked disc grit removal equipment also uses the principle of vortex centrifugation to remove sand. Specifically, it forms a vortex space by stacking multiple conical discs. After the sewage enters tangentially, it generates a vortex. Under the action of centrifugal force and gravity, the sand particles slide along the inclined surface of the disc into the central sand collection tank.

[0005] For example, the "Precision Sand Removal Device" disclosed in application publication number CN118416549A includes a stacked disc system. Wastewater enters the sedimentation tank through the sedimentation inlet pipe, and is then evenly distributed into the stacked discs. The tangential water inlet causes the water flow in the system to form a vortex. The sand moves to the boundary layer of each stacked disc and, under the action of gravity, naturally slides down the inclined surface of each conical funnel to the central opening, and finally settles into the sand collection tank, thus achieving the purpose of precise sand removal.

[0006] However, the sand removal device in the above technical solution can only achieve cyclone sand removal. Although it can separate a portion of the sand relatively quickly during the cyclone sand removal process, the sand falling into the sand collection tank still contains a lot of moisture. Furthermore, the cyclone sand removal device only has the function of rotating sand removal and cannot be combined with gravity settling to achieve complete sand settling. The functional design is too limited and cannot achieve the purpose of precise sand removal. In addition, no matter what kind of sand removal equipment is available, in the specific sand removal process, the sand and gravel will accumulate on the cyclone plate. Sometimes, due to the adhesion of the sand and gravel on the cyclone plate, it is not easy to remove the plate, which will seriously affect the sand removal effect and quality.

[0007] Therefore, in order to solve the above problems, it is necessary to develop a precision sand removal device with a reasonable and stable structure that can improve sand removal efficiency and quality. Summary of the Invention

[0008] The purpose of this invention is to address the shortcomings of existing technologies by providing a precision sand removal device; the technical solution is as follows:

[0009] A precision sand removal device includes several vertical support members, on which are installed swirl plates with uniform vertical spacing. Each swirl plate has a funnel-shaped structure, and a circular discharge port is provided at the middle position of each swirl plate. A sand collection box is also provided at the bottom of the discharge port.

[0010] It also includes a feed cylinder, the feed inlet of which is higher than the uppermost swirl plate. The feed cylinder is provided with a feed pipe corresponding to the position of all the swirl plates. The feed pipe is placed horizontally and is connected to the swirl plates. The feed pipe and the swirl plates are tangentially arranged.

[0011] The liquid entering from the feed cylinder enters the feed pipe of each layer, and then enters the cyclone plate tangentially from the feed pipe of each layer.

[0012] Furthermore, the swirl plate includes an outer swirl plate and an inner swirl plate. The outer swirl plate is configured as a fixed circumferential plate structure and is fixed to the support member accordingly. The inner swirl plate is configured to be composed of several movable arc-shaped plates and is set in close contact with the lower end face of the outer swirl plate.

[0013] The upper and lower end faces of the outer vortex plate are provided with a moving mechanism corresponding to the position of the inner vortex plate. The main shaft of the moving mechanism is arranged parallel to the outer vortex plate below it, and the main shaft of the moving mechanism extends downward and is fixed to the inner vortex plate.

[0014] Driven by the moving mechanism, the inner swirl plate can move correspondingly to the lower end of the outer swirl plate, and the main shaft of the moving mechanism is set to point to the center of the outer swirl plate, so that the outer swirl plate moves in the radial direction. When all the inner swirl plates have moved inward to their positions, they form a whole annular plate, and the inner ends of all the inner swirl plates form a circular discharge port.

[0015] Furthermore, the swirl inner plate and the moving mechanism are each provided with six sets;

[0016] Furthermore, the lower end face of the outer swirl plate is provided with a sliding groove, while the upper end face of the inner swirl plate is provided with a slider embedded in the sliding groove, so that the inner swirl plate can move accordingly with the cooperation of the sliding groove and the slider.

[0017] Furthermore, the size of the sand collection box is set accordingly so that when the inner cyclone plate is retracted, the sand collection range of the sand collection box still covers the material discharge position of the outer cyclone plate.

[0018] Furthermore, it also includes a lifting mechanism, which is located above the overall swirl plate. The main shaft of the lifting mechanism passes downward through the discharge port, and a baffle corresponding to the position of the discharge port is also installed on the main shaft. The size of the baffle is larger than the discharge port, and the baffle can completely block the discharge port from below.

[0019] After the inner swirl plate moves inward into position, a discharge port is formed at the middle position of the inner swirl plate. After the baffle blocks the discharge port from the lower end, the area inside the swirl plate is set as a sedimentation area. When the baffle moves downward, the area inside the swirl plate is opened. And when the inner swirl plate retracts outward under the action of the moving mechanism, the area inside the swirl plate is also opened.

[0020] Furthermore, the baffle has a convex structure, and the upwardly protruding part can be inserted into the feed port accordingly.

[0021] Furthermore, the present invention provides two sand removal methods as follows, wherein the cyclone sand removal method is as follows: wastewater is introduced into each layer of cyclone plates through a feed cylinder and a feed pipe, and cyclone is generated on the cyclone plates by the impact of pressure difference. During the cyclone process, the upper layer of water flows out from the outside of the cyclone plates, and the lower layer of sand and gravel settles shallowly on the cyclone plates. Under the action of gravity, it slides down to the middle discharge port and falls into the sand collection tank below; and by controlling the inner plate of the cyclone to contract inward to the lower end face of the outer plate of the cyclone, the sand and gravel on the inner plate of the cyclone falls into the sand collection tank below.

[0022] The sedimentation and sand removal process is as follows: The baffle, driven by the lifting mechanism, blocks the discharge port, creating a sedimentation zone on the vortex plate. After the wastewater enters through the feed pipe, the upper layer of water flows out from the outside of the outer plate of the vortex under the action of the vortex. The remaining mixed water settles in the sedimentation zone. The upper layer of clean water is then extracted through an external hose. The baffle is then lowered by the lifting mechanism to open the discharge port. The sand and gravel settled in the sedimentation zone fall from the discharge port into the sand collection trough below. The inner plate of the vortex is retracted to the lower end face of the outer plate of the vortex by the moving mechanism, removing the sand and gravel attached to the inner plate of the vortex. The sand and gravel fall downwards into the sand collection trough below.

[0023] Beneficial effects: The present invention has the following beneficial effects:

[0024] 1) This invention can achieve the dual functions of cyclone sand removal and sedimentation sand removal. Cyclone sand removal removes sand by the swirling current formed on the cyclone plate by the impact force of sewage. Sedimentation sand removal removes sand by setting up a lifting mechanism and setting up baffles to make the area on the cyclone plate a sedimentation area. The structure is reasonably set and can be used as a dual function to achieve the purpose of precise sand removal.

[0025] 2) The swirl plate in this invention is composed of a fixed outer swirl plate and a movable inner swirl plate. The overall size of the swirl plate and the size of the middle discharge port can be adjusted by the movable performance of the inner swirl plate. The adjustment can be selected according to the particle size of the sand and gravel in different sewages. The structure is reasonable and easy to use.

[0026] 3) The movable vortex inner plate in this invention can remove the sand and gravel attached to the vortex inner plate. Whether in the process of vortex sand removal or sedimentation sand removal, the vortex inner plate can be used to remove sand from the surface of the plate. The structure is ingenious and reasonable. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the present invention;

[0028] Figure 2 This is a diagram showing the position of the lifting mechanism in this invention;

[0029] Figure 3 This is a top view of the swirl plate in this invention;

[0030] Figure 4 This is a diagram showing the positions of the inner and outer swirl plates in this invention.

[0031] Figure 5 This is a diagram showing the position of the outer swirl plate after it contracts outwards in this invention.

[0032] Figure 6 for Figure 4 AA view;

[0033] Figure 7 for Figure 5 BB view;

[0034] Among them, support component 1; swirl plate 2; discharge port 3; sand collection box 4; feed cylinder 5; feed inlet 6; feed pipe 7; outer swirl plate 8; inner swirl plate 9; moving mechanism 10; chute 11; slider 12; lifting mechanism 13; baffle 14. Detailed Implementation

[0035] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention, and it should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0036] Example 1

[0037] like Figure 1 and Figure 3As shown, this embodiment discloses a precision sand removal device, including several vertical support members 1. The support members 1 are equipped with swirl plates 2 with uniform vertical spacing. The swirl plates 2 are all funnel-shaped structures. A circular discharge port 3 is provided at the middle position of each swirl plate 2, and a sand collection box 4 is provided at the bottom of the discharge port 3.

[0038] It also includes a feed cylinder 5, the feed inlet 6 of the feed cylinder 5 is higher than the uppermost swirl plate 2, and the feed cylinder 5 is provided with a feed pipe 7 corresponding to the position of all the swirl plates 2. The feed pipe 7 is placed horizontally and is connected to the swirl plates 2. The feed pipe 7 and the swirl plates 2 are tangentially arranged.

[0039] The liquid entering from the feed cylinder 5 enters the feed pipe 7 of each layer, and then enters tangentially from the feed pipe 7 of each layer onto the swirl plate 2.

[0040] like Figure 4 and Figure 5 As shown, the swirl plate 2 includes an outer swirl plate 8 and an inner swirl plate 9. The outer swirl plate 8 is configured as a fixed circumferential plate structure and is fixed on the support member 1 accordingly. The inner swirl plate 9 is configured to be composed of several movable arc-shaped plates and is set in close contact with the lower end face of the outer swirl plate 8.

[0041] A moving mechanism 10 corresponding to the position of the inner swirl plate 9 is provided at the lower end face of the upper end of the outer swirl plate 8. The main shaft of the moving mechanism 10 is arranged parallel to the outer swirl plate 8 below the outer swirl plate 8, and the main shaft of the moving mechanism 10 extends downward and is fixed on the inner swirl plate 9.

[0042] Driven by the moving mechanism 10, the inner swirl plate 9 can move correspondingly to the lower end of the outer swirl plate 8, and the main shaft of the moving mechanism 10 is correspondingly set to point to the center of the outer swirl plate 8, so that the outer swirl plate 8 moves in the radial direction. When all the inner swirl plates 9 have moved inward to their positions, they form a whole annular plate, and the inner ends of all the inner swirl plates 9 form a circular discharge port 3.

[0043] The inner swirl plate 9 and the moving mechanism 10 are each provided with six sets;

[0044] The lower end face of the outer swirl plate 8 is provided with a groove 11, while the upper end face of the inner swirl plate 9 is provided with a slider 12 embedded in the groove 11. The inner swirl plate 9 moves accordingly with the cooperation of the groove 11 and the slider 12.

[0045] The dimensions of the sand collection box 4 are set accordingly, so that when the inner cyclone plate 9 is retracted, the sand collection range of the sand collection box 4 still covers the material discharge position of the outer cyclone plate 8.

[0046] like Figure 2As shown, it also includes a lifting mechanism 13, which is located above the overall swirl plate 2. The main shaft of the lifting mechanism 13 passes downward through the discharge port 3, and a baffle 14 corresponding to the position of the discharge port 3 is also installed on the main shaft. The size of the baffle 14 is larger than that of the discharge port 3, and the baffle 14 can completely block the discharge port 3 from below.

[0047] like Figure 6 and Figure 7 As shown, when the inner swirl plate 9 moves inward to its position, a discharge port 3 is formed at the middle position of the inner swirl plate 9. After the baffle 14 blocks the discharge port 3 from the lower end, the area inside the swirl plate 2 is set as a sedimentation area. When the baffle 14 moves downward, the area inside the swirl plate 2 is opened. And when the inner swirl plate 9 retracts outward under the action of the moving mechanism 10, the area inside the swirl plate 2 is also opened.

[0048] The baffle 14 has a convex structure, and the upward protrusion can be inserted into the feed port 3.

[0049] Example 2

[0050] This embodiment discloses a sand removal method based on the sand removal device of Embodiment 1, specifically as follows: Wastewater entering from the feed cylinder is evenly distributed and enters the vortex plate through the feed pipe. Since the feed pipe and the vortex plate are tangentially arranged, the wastewater forms a relatively strong vortex after entering the vortex plate, such as... Figure 3 As shown, as the water flows forward, fixed particles such as sand and gravel gradually settle onto the swirl plate, while the water in the upper layer flows over the swirl plate during the impact of the water flow and flows out from the side of the swirl plate. The sand and gravel particles roll downward and eventually fall from the discharge port into the sand collection box at the bottom, where they can then undergo sedimentation treatment.

[0051] In the aforementioned cyclone sand removal process, the width of the cyclone plate directly affects the cyclone sand removal effect. If the cyclone plate is wider, it can increase the cyclone path of the wastewater and the sedimentation effect of particles, which is very suitable for some small-sized sand and gravel. However, the discharge port in the middle will become smaller, which is very unfavorable for the discharge of sand and gravel settled on the cyclone plate. The sand and gravel may still adhere to the cyclone plate after the water has flowed out, making it impossible to remove the sand and gravel. On the other hand, if the cyclone plate is narrower, it is very convenient to discharge sand and gravel, which is very suitable for some large-sized sand and gravel. Although it will affect the cyclone effect, the separation of large particles is easier, and the discharge port in the middle is also correspondingly larger, which is conducive to the discharge of large-sized sand and gravel. However, the above technical solutions cannot achieve both goals simultaneously.

[0052] To address the aforementioned problems, this invention configures the swirl plate as an outerly fixed swirl plate and an innerly movable swirl plate. When a narrower swirl plate is required, the movable swirl plate is directly moved and retracted to its lower end face via a moving mechanism. Figure 5 and Figure 7 As shown, the central discharge port becomes correspondingly larger, allowing the outer swirl plate to be used as the entire swirl plate, making it ideal for removing large particles of sand and gravel; and when the inner swirl plate extends inward to its designated position, as... Figure 4 and Figure 6 As shown, six inner swirl plates constitute the entire inner plate. In this way, the inner and outer swirl plates work together to form an integral swirl plate. The discharge port in the middle of the inner swirl plate becomes smaller, but the swirl path and the overall swirl plate become larger, which is suitable for sand removal of small particles of sand and gravel.

[0053] Furthermore, the movable vortex inner plate in this invention also has the function of removing sand and gravel attached to the plate. Since the vortex inner plate is set on the lower end face of the vortex outer plate, a sliding groove and an embedded slider are also provided between the two to stabilize the structure. Due to the attached arrangement, when the vortex inner plate retracts to the lower end face of the vortex outer plate, the sand and gravel attached to the vortex inner plate can be blocked by the lower end of the vortex outer plate, thereby pushing the sand and gravel attached to the plate away and falling into the sand collection box below, thus achieving the removal of sand and gravel from the plate.

[0054] In addition, the technical solution of the present invention also has a sedimentation function. Usually, the sand and gravel separated by swirling action still contain a lot of water, and further solid-liquid separation is required through other means, such as sedimentation. However, the present invention directly achieves solid-liquid separation within the swirling plate.

[0055] In this invention, a lifting mechanism is provided at the topmost position. The main shaft of the lifting mechanism extends downward through the discharge port and a baffle is provided accordingly. When the outer swirl plate is extended as a whole, the size of the convex baffle is just right to be stuck at the position of the discharge port, so that the entire area inside the swirl plate can be formed into a sedimentation area.

[0056] When external sewage enters the cyclone plate through the swirling action, some of the clean water is separated by the swirling action, but a lot of water mixed with sand and gravel remains on the cyclone plate. At this time, because the discharge port is blocked, it cannot enter the sand collection box. Solid-liquid separation is achieved through sedimentation. Then, an external flexible hose is placed in each area of ​​the cyclone plate to extract the upper layer of clean water. After the upper layer of clean water is extracted, the baffle is moved downward by the lifting mechanism to discharge the lower layer of settled sand and gravel into the sand collection box. At this time, the sand and gravel attached to the inner cyclone plate can also be removed by moving the inner cyclone plate.

[0057] Similarly, during the process of the moving mechanism retracting the inner swirl plate inward to the lower end of the outer swirl plate, the sand and gravel adhering on the inner swirl plate can be blocked by the lower end of the outer swirl plate, thereby pushing the sand and gravel adhering on the inner swirl plate away and falling into the sand collection box below, thus achieving the removal of sand and gravel from the plate.

[0058] The above-described specific embodiments are merely preferred embodiments of the present invention and are not intended to limit the implementation of the present invention or the scope of the claims. All equivalent changes and modifications made in accordance with the scope of patent protection of the present invention should be included within the scope of the present invention patent application.

Claims

1. A precision sand removal device, characterized by: It includes several vertical support members (1), and the support members (1) are equipped with swirl plates (2) with uniform vertical spacing. The swirl plates (2) are all funnel-shaped, and a circular discharge port (3) is provided at the middle position of each swirl plate (2). A sand collection box (4) is also provided at the bottom of the discharge port (3). It also includes a feed cylinder (5), the feed inlet (6) of which is higher than the uppermost swirl plate (2), and a feed pipe (7) corresponding to the position of all the swirl plates (2) is provided inside the feed cylinder (5). The feed pipe (7) is placed horizontally and is connected to the swirl plate (2). The feed pipe (7) and the swirl plate (2) are tangentially arranged. The liquid entering from the feed cylinder (5) enters the feed pipe (7) of each layer respectively, and then enters tangentially from the feed pipe (7) of each layer onto the swirl plate (2); The swirl plate (2) includes an outer swirl plate (8) and an inner swirl plate (9). The outer swirl plate (8) is a fixed circumferential plate structure, which is fixed on the support member (1). The inner swirl plate (9) is composed of several movable arc-shaped plates and is set close to the lower end face of the outer swirl plate (8). A moving mechanism (10) corresponding to the position of the inner swirl plate (9) is provided at the lower end face of the upper end of the outer swirl plate (8). The main shaft of the moving mechanism (10) is arranged parallel to the outer swirl plate (8) below it, and the main shaft of the moving mechanism (10) extends downward and is fixed on the inner swirl plate (9). Driven by the moving mechanism (10), the inner swirling plate (9) can move correspondingly to the lower end of the outer swirling plate (8), and the main shaft of the moving mechanism (10) is set to point to the center of the outer swirling plate (8), so that the inner swirling plate (9) moves correspondingly along the radial direction of the outer swirling plate (8), and when all the inner swirling plates (9) have moved inward to their positions, they form a whole annular plate, and the inner ends of all the inner swirling plates (9) form a circular discharge port (3).

2. The precision sand removal device of claim 1, wherein: The swirling inner plate (9) and the moving mechanism (10) are each provided with six sets.

3. The precision sand removal device of claim 1, wherein: The lower end face of the outer vortex plate (8) is provided with a sliding groove (11), while the upper end face of the inner vortex plate (9) is provided with a slider (12) embedded in the sliding groove (11). The inner vortex plate (9) moves accordingly with the cooperation of the sliding groove (11) and the slider (12).

4. The precision sand removal device of claim 1, wherein: The size of the sand collection box (4) is set accordingly. When the inner vortex plate (9) is retracted, the sand collection range of the sand collection box (4) still covers the material discharge position of the outer vortex plate (8).

5. The precision sand removal device of claim 1, wherein: It also includes a lifting mechanism (13), which is located above the overall swirl plate (2). The main shaft of the lifting mechanism (13) passes downward through the discharge port (3), and a baffle (14) corresponding to the position of the discharge port (3) is also installed on the main shaft. The size of the baffle (14) is larger than that of the discharge port (3), and the baffle (14) can completely block the discharge port (3) from below. When the inner swirl plate (9) moves inward to its position, a discharge port (3) is formed at the middle position of the inner swirl plate (9). After the baffle (14) blocks the discharge port (3) from the lower end of the discharge port (3), the area inside the swirl plate (2) is set as a sedimentation area. When the baffle (14) moves downward, the area inside the swirl plate (2) is opened. And when the inner swirl plate (9) contracts outward under the action of the moving mechanism (10), the area inside the swirl plate (2) is also opened.

6. The precision sand removal device of claim 5, wherein: The baffle (14) has a convex structure, and the upward protruding part can be inserted into the feed port (3).

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