A geothermal sand removal device and its usage method

Abstract

This application relates to a geothermal water sand removal device and its usage method, belonging to the field of geothermal water sand removal technology. It includes a cylinder, a drive mechanism, and a vortex mechanism. A water outlet pipe is rotatably connected to the top of the cylinder. The drive mechanism drives the water outlet pipe and the vortex mechanism to rotate. An inlet pipe is provided on the cylinder, and the outlet pipe has an outlet inlet. A first filter plate is disposed between the bottom of the outlet pipe and the inner wall of the cylinder, sealing the space between the inlet pipe and the outlet inlet. A second filter plate is also covered by the outlet inlet, with a mesh diameter smaller than that of the first filter plate. This application can effectively intercept and filter fine sand and gravel in geothermal water, significantly improving sand removal efficiency. Simultaneously, as the outlet pipe rotates synchronously, some sand and gravel particles adhering to the surface of the second filter plate are thrown towards the inner wall of the cylinder under centrifugal force, thereby reducing sand and gravel clogging of the filter plate and extending the continuous operating time of the equipment.

Description

Technical Field

[0001] This application relates to the field of geothermal sand removal technology, and more specifically, to a geothermal sand removal device and its usage method. Background Technology

[0002] Geothermal energy, as a clean and renewable energy source, is increasingly widely used in power generation, heating, industrial heat sources, and agricultural aquaculture. During the extraction and utilization of geothermal water, a large amount of solid impurities, such as sand and gravel particles, are inevitably carried. If these sand and gravel particles are directly introduced into the utilization system without effective treatment, they will cause severe wear and blockage to pipes, valves, pumps, heat exchangers, and other equipment, significantly reducing system efficiency, shortening equipment lifespan, and increasing maintenance costs. Therefore, sand removal from geothermal water is an indispensable and crucial step in its resource utilization.

[0003] Currently, the sand removal technologies commonly used in the industry are mainly based on the principles of gravity settling and centrifugal separation. Among them, cyclone sand separators have become the mainstream physical sand removal equipment due to their advantages such as simple structure, small footprint, large flow rate, and no moving parts (in traditional forms). Their standard working principle is as follows: the sand-laden water flows tangentially into the cylindrical-conical body, forming a strong rotating vortex inside. Under the combined action of centrifugal force, centripetal buoyancy, and fluid drag, denser sand particles are thrown against the cylinder wall and, under gravity, slide down the wall to the sand collection hopper at the bottom for discharge; while the preliminarily purified water forms a low-pressure rising vortex in the central area and is discharged through the overflow pipe (outlet pipe) at the top.

[0004] However, in actual operation, the interception effect of light sand and fine particles in geothermal water with complex composition and wide particle distribution is limited. Light sand and fine particles will be discharged from the overflow pipe with the rising eddy, resulting in a decrease in sand removal efficiency.

[0005] Therefore, there is an urgent need for a geothermal sand removal device that can efficiently intercept lightweight sand and gravel. Summary of the Invention

[0006] This application provides a geothermal sand removal device and its usage method, which aims to solve or partially solve the technical problems mentioned in the background art.

[0007] In a first aspect, this application provides a geothermal sand removal device, including a cylinder, a drive mechanism, and a vortex mechanism. The top of the cylinder is rotatably connected to a water outlet pipe, and the bottom of the water outlet pipe extends into the cylinder. The drive mechanism is in a transmission cooperation with the water outlet pipe and the vortex mechanism to drive the water outlet pipe and the vortex mechanism to rotate. The cylinder is provided with an inlet pipe on its side wall and an outlet pipe is provided with an outlet pipe inlet. The outlet pipe inlet is higher than the inlet pipe. A first filter plate is provided between the bottom of the outlet pipe and the inner wall of the cylinder. The first filter plate seals the space between the inlet pipe and the outlet pipe inlet. The water outlet is also covered with a second filter plate, the mesh diameter of which is smaller than that of the first filter plate.

[0008] Optionally, the driving mechanism includes a drive motor, which is disposed at the top of the cylinder. The output end of the drive motor is coaxially connected to the connecting shaft. The connecting shaft and the water outlet pipe are driven by a first gear set, and the connecting shaft and the vortex mechanism are driven by a second gear set.

[0009] Optionally, the cylinder is further provided with a partition, which is sleeved outside the water outlet pipe and arranged at a position higher than the water inlet of the water outlet pipe. The partition and the top of the cylinder cooperate to form a sealed chamber, and the connecting shaft, the first gear set and the second gear set are all located in the sealed chamber. The baffle is rotatably connected to the water outlet pipe and the cylinder respectively. An outer sleeve is fixedly connected to the bottom of the baffle. The outer sleeve is sleeved outside the water outlet pipe. The bottom of the outer sleeve passes through the first filter plate and is fixedly connected to the vortex mechanism. The connecting shaft is connected to the baffle through a second gear set.

[0010] Optionally, the transmission ratios of the first gear set and the second gear set are different; The inner diameter of the outer sleeve matches the outer diameter of the water outlet pipe and the second filter plate, so that the inner wall of the outer sleeve can fit against the outer wall of the water outlet pipe and the second filter plate. An external opening is provided on the side of the outer sleeve, and the external opening can be connected to the water inlet of the water outlet pipe by the relative rotation of the outer sleeve and the water outlet pipe.

[0011] Optionally, the water outlet pipe is provided with an inner sleeve, the bottom end of the inner sleeve is rotatably connected to the bottom surface of the inner wall of the water outlet pipe, the outer diameter of the inner sleeve matches the inner diameter of the water outlet pipe, and an internal opening is provided on the side of the inner sleeve, which can be connected to the water inlet of the water outlet pipe through the relative rotation of the inner sleeve and the water outlet pipe. The outer side of the inner sleeve is also provided with a soft brush. The inner opening and the soft brush are distributed along the circumference of the inner sleeve. The soft brush can scrape the inner surface of the second filter plate by the relative rotation of the inner sleeve and the water outlet pipe.

[0012] Optionally, the shapes of the internal opening and the water inlet of the outlet pipe are matched; the opening width of the external opening is greater than the opening width of the water inlet of the outlet pipe, so that the external opening is always connected to the water inlet of the outlet pipe.

[0013] Optionally, the first filter plate is fixedly connected to the cylinder; a scraper is provided at the bottom of the partition plate, the bottom edge of the scraper is used to clean the top surface of the first filter plate, and the outer edge of the scraper is used to clean the inner wall of the cylinder.

[0014] Optionally, the outer edge of the scraper is provided with a first brush, which contacts the inner wall of the cylinder. The scraper has a second brush at its bottom edge, and the second brush is in contact with the top surface of the first filter plate.

[0015] Optionally, the swirling mechanism includes a connecting rod and multiple helical blades, with the connecting rod arranged at the bottom of the outlet pipe.

[0016] Secondly, embodiments of this application provide a method for using a geothermal sand removal device, applied to any of the geothermal sand removal devices described above. The geothermal sand removal device includes a cylinder, an inlet pipe, an outlet pipe, a drive mechanism, a vortex mechanism, a first filter plate, and a second filter plate, comprising the following steps: Geothermal water is injected into the cylinder through the inlet pipe, and the outlet pipe and the vortex mechanism are driven to rotate by the drive mechanism so that the geothermal water in the cylinder generates a vortex. The geothermal water flowing into the inlet of the outlet pipe is filtered sequentially by the first filter plate and the second filter plate, and the filtered geothermal water is removed from the cylinder through the outlet pipe.

[0017] Beneficial effects: In the embodiments of this application, the cooperation of the first filter plate and the second filter plate forms a two-stage filtration between the inlet pipe and the outlet pipe of the sand removal equipment, which can effectively intercept and filter the fine sand and gravel in the geothermal water step by step, significantly improving the sand removal efficiency; combined with the centrifugal force generated by the vortex mechanism, it can effectively separate sand and gravel of different sizes in the geothermal water, further improving the sand removal capacity of the geothermal water.

[0018] Meanwhile, the first filter plate is sealed between the bottom of the outlet pipe and the inner wall of the cylinder, and its area is much larger than that of the second filter plate. Therefore, it can withstand a larger amount of sand and gravel, thereby reducing the filtration burden on the second filter plate. Furthermore, the second filter plate is arranged at the inlet of the outlet pipe and rotates synchronously with the outlet pipe. This causes some of the sand and gravel particles attached to the surface of the second filter plate to be thrown towards the inner wall of the cylinder under the action of centrifugal force. Thus, through the cooperation of the first filter plate and the outlet pipe, the risk of clogging caused by sand and gravel accumulation on the second filter plate can be minimized, the continuous operation time of the equipment can be extended, and the sand removal efficiency of geothermal water can be further improved. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a geothermal sand removal device according to an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of a geothermal sand removal device according to an embodiment of this application; Figure 3 for Figure 2 Enlarged view of the local structure at point A; Figure 4 This is another internal structural schematic diagram of the geothermal sand removal device proposed in one embodiment of this application; Figure 5 for Figure 4 An explosive diagram illustrating the fit between the outer sleeve, the outlet pipe, and the inner sleeve; Figure 6 This is another internal structural schematic diagram of the geothermal sand removal device proposed in one embodiment of this application.

[0021] Explanation of reference numerals in the attached figures: 1-Sand removal equipment, 2-Cylinder, 3-Inlet pipe, 4-Outlet pipe, 5-Outlet pipe inlet, 6-First filter plate, 7-Baffle, 8-Inner sleeve, 9-Inner opening, 10-Drive motor, 11-Connecting shaft, 12-First drive gear, 13-First gear, 14-Second drive gear, 15-Second gear, 16-Scraper, 17-Protrusion, 18-First brush, 19-Second brush, 20-Outer sleeve, 21-Outer opening, 22-Connecting rod, 23-Spiral blade, 24-Second filter plate, 25-Soft brush, 26-Sealing sleeve. Detailed Implementation

[0022] 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, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be understood that the terms "length", "upper", "lower", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] The following is combined with Figures 1-6 This application describes a geothermal sand removal device and its usage method according to embodiments thereof.

[0027] like Figures 1-6 As shown, a geothermal sand removal device includes a cylinder 2, a drive mechanism, and a vortex mechanism. The top of the cylinder 2 is rotatably connected to a water outlet pipe 4, and the bottom of the water outlet pipe 4 extends into the cylinder 2. The drive mechanism is in transmission cooperation with the water outlet pipe 4 and the vortex mechanism to drive the water outlet pipe 4 and the vortex mechanism to rotate. The side wall of the cylinder 2 is provided with a water inlet pipe 3, and the water outlet pipe 4 is provided with a water outlet inlet 5. The height of the water outlet inlet 5 is higher than that of the water inlet pipe 3. A first filter plate 6 is provided between the bottom of the water outlet pipe 4 and the inner wall of the cylinder 2. The first filter plate 6 seals the water inlet pipe 3 and the water outlet inlet 5. The water outlet 5 is also covered by a second filter plate 24, the mesh diameter of which is smaller than that of the first filter plate 6.

[0028] In this embodiment, the inlet pipe 3 is used to inject geothermal water into the cylinder 2. The first filter plate 6 is sealed between the inlet pipe 3 and the outlet pipe inlet 5. This means that the first filter plate 6 completely blocks the channel between the inlet pipe 3 and the outlet pipe inlet 5 used to transport geothermal water. The geothermal water injected from the inlet pipe 3 must be filtered and sand removed by the first filter plate 6 before entering the outlet pipe 4 from the outlet pipe inlet 5 located at the top of the cylinder 2, and then discharged from the cylinder 2 with the outlet pipe 4, thereby obtaining the sand-removed geothermal water. In the process of removing sand from geothermal water, the outlet pipe 4 and the vortex mechanism are driven to rotate by the drive mechanism. The geothermal water entering the cylinder 2 from the inlet pipe 3 is guided by the vortex mechanism to generate a spiral downward flow. The heavier sand and gravel in the geothermal water adhere tightly to the inner wall of the cylinder 2 and sink to the bottom under the action of centrifugal force and gravity. Meanwhile, some of the lighter sand and gravel float upward with the rotation of the geothermal water. At this time, the first filter plate 6, which is sealed between the inlet pipe 3 and the outlet pipe inlet 5, performs preliminary filtration of the lighter sand and gravel. Subsequently, the geothermal water continues to rise and is further finely filtered by the second filter plate 24 at the outlet pipe inlet 5, thereby effectively intercepting the fine sand and gravel remaining in the geothermal water and ensuring the quality of the effluent.

[0029] In summary, this equipment, through the cooperation of the first filter plate 6 and the second filter plate 24, forms a two-stage filtration system between the inlet pipe 3 and the outlet pipe 4 of the sand removal equipment. This system can effectively intercept and filter fine sand and gravel in geothermal water step by step, significantly improving the sand removal efficiency. Combined with the centrifugal force generated by the vortex mechanism, it can effectively separate sand and gravel of different sizes in geothermal water, further improving the sand removal capacity of geothermal water.

[0030] Meanwhile, the first filter plate 6 is sealed between the bottom of the outlet pipe 4 and the inner wall of the cylinder 2. Its area is much larger than that of the second filter plate 24, so it can withstand a larger amount of sand and gravel interception, thereby reducing the filtration burden of the second filter plate 24. Furthermore, the second filter plate 24 is arranged at the inlet 5 of the outlet pipe and rotates synchronously with the outlet pipe 4, so that some of the sand and gravel particles attached to the surface of the second filter plate 24 are thrown towards the inner wall of the cylinder 2 under the action of centrifugal force. Thus, through the cooperation of the first filter plate 6 and the outlet pipe 4, the risk of blockage caused by sand and gravel accumulation to the second filter plate 24 can be minimized, the continuous operation time of the equipment can be extended, and the sand removal efficiency of geothermal water can be further improved.

[0031] Optionally, the vortex mechanism can be arranged at the bottom of the outlet pipe 4, and the height of the inlet pipe 3 can be adapted to the height of the vortex mechanism, so that the geothermal water directly impacts the vortex mechanism and generates a vortex after entering the cylinder 2 from the inlet pipe 3. At this time, the first filter plate 6 can be arranged at the connection between the vortex structure and the outlet pipe 4, and arranged around the outlet pipe 4 to achieve comprehensive interception of geothermal water.

[0032] Optionally, the bottom of the cylinder 2 is provided with a conical sedimentation area, and the bottom of the conical sedimentation area is provided with a sand discharge port; the swirling mechanism causes the geothermal water to enter and generate a centrifugal sedimentation effect, thereby throwing the sand particles toward the inner wall of the cylinder 2 and settling them into the conical sedimentation area.

[0033] Optionally, the drive mechanism may include multiple drive devices, which drive the water outlet pipe 4 and the vortex mechanism to rotate respectively, or a single drive device may drive the water outlet pipe 4 and the vortex mechanism to rotate simultaneously.

[0034] In some embodiments, the driving mechanism includes a drive motor 10, which is disposed on the top of the cylinder 2. The output end of the drive motor 10 is coaxially connected to the connecting shaft 11. The connecting shaft 11 and the water outlet pipe 4 are driven by a first gear set, and the connecting shaft 11 and the vortex mechanism are driven by a second gear set.

[0035] In this embodiment, the drive mechanism includes only a single drive motor 10. When the drive motor 10 is working, it transmits power to the water outlet pipe 4 via the first gear set and to the vortex mechanism via the second gear set through the connecting shaft 11, thereby achieving synchronous rotation of the water outlet pipe 4 and the vortex mechanism. This allows the existing drive source in the sand removal equipment 1 used to drive the vortex mechanism to achieve synchronous drive of the water outlet pipe 4 without the need for an additional independent drive device, effectively reducing the manufacturing cost of the equipment and improving the overall coordination and stability of the transmission.

[0036] Meanwhile, since the water outlet pipe 4 and the vortex mechanism are driven independently through the first gear set and the second gear set, the transmission ratio of the first gear set and the second gear set can be adjusted according to the actual working conditions, so that the vortex mechanism and the water outlet pipe 4 can rotate independently at the same or different rotation speeds.

[0037] Optionally, the body of the drive motor 10 is arranged on the top outer side of the cylinder 2, and the output end of the drive motor 10 passes through the cylinder 2 and is coaxially and fixedly connected to the connecting shaft 11.

[0038] In some embodiments, the cylinder 2 is further provided with a partition 7, which is sleeved on the water outlet pipe 4 and arranged at a position higher than the water outlet pipe inlet 5. The partition 7 and the top of the cylinder 2 cooperate to form a sealed chamber, and the connecting shaft 11, the first gear set and the second gear set are all located in the sealed chamber. The partition 7 is rotatably connected to the water outlet pipe 4 and the cylinder 2 respectively. An outer sleeve 20 is fixedly connected to the bottom of the partition 7. The outer sleeve 20 is sleeved outside the water outlet pipe 4. The bottom of the outer sleeve 20 passes through the first filter plate 6 and is fixedly connected to the vortex mechanism. The connecting shaft 11 is connected to the partition 7 through a second gear set.

[0039] In this embodiment, the partition 7, the outer sleeve 20 and the vortex mechanism are coaxially and fixedly connected in sequence. The connecting shaft 11 can transmit power to the partition 7 through the second gear set, thereby driving the outer sleeve 20 and the vortex mechanism to rotate synchronously, thus realizing the transmission cooperation between the connecting shaft 11 and the vortex mechanism through the second gear set.

[0040] The sealed chamber formed by the partition 7 and the top of the cylinder 2 can isolate the drive motor 10, connecting shaft 11, first gear set and second gear set from the geothermal water, thereby avoiding the geothermal water and the sand and gravel particles inside it from causing obstruction and wear to the transmission between the gears, ensuring the stable operation of the equipment and extending the service life of the equipment.

[0041] Optionally, the first gear set includes a first drive gear 12 and a first gear 13 that mesh with each other. The first drive gear 12 is fixed and sleeved on the connecting shaft 11, and the first gear 13 is fixed and sleeved on the water outlet pipe 4. The first drive gear 12 rotates synchronously with the connecting shaft 11 and drives the first gear 13 to rotate through meshing transmission, thereby driving the water outlet pipe 4 to rotate around its axis.

[0042] Optionally, the second gear set is arranged below the first gear set, including a second drive gear 14 and a second gear 15 that mesh with each other. The second drive gear 14 is fixed and sleeved on the connecting shaft 11, and the second gear 15 is sleeved on the water outlet pipe 4, but is not connected to the water outlet pipe 4. The bottom of the second gear 15 is fixedly connected to the top of the partition 7. The second drive gear 14 rotates synchronously with the connecting shaft 11 and drives the second gear 15 to rotate through meshing transmission, thereby driving the partition 7 to rotate around its axis.

[0043] Optionally, in order to enhance the sealing between the baffle 7 and the cylinder 2 and prevent water from moving upward through the gap between the baffle 7 and the cylinder 2 during the rotation of the baffle 7, the baffle 7 can be embedded in the inner wall of the cylinder 2. Furthermore, a sealing sleeve 26 can be fitted on the outer wall of the baffle 7. The sealing sleeve 26 rotates and engages with the inner wall of the cylinder 2, and the sealing sleeve 26 ensures the sealing of the rotational connection between the baffle 7 and the cylinder 2.

[0044] Optionally, the outer sleeve 20 is rotatably connected to the first filter plate 6.

[0045] Optionally, the second filter plate 24 may be an arc-shaped filter plate adapted to the water inlet 5 of the water outlet pipe.

[0046] In some embodiments, the transmission ratios of the first gear set and the second gear set are different; the inner diameter of the outer sleeve 20 matches the outer diameter of the water outlet pipe 4 and the second filter plate 24, so that the inner wall of the outer sleeve 20 can fit against the outer wall of the water outlet pipe 4 and the second filter plate 24; an external opening 21 is provided on the side of the outer sleeve 20, and the external opening 21 can be connected to the water outlet inlet 5 of the water outlet pipe through the relative rotation of the outer sleeve 20 and the water outlet pipe 4.

[0047] In this embodiment, the second filter plate 24 is an arc-shaped filter plate, and its outer diameter matches the outer diameter of the water outlet pipe 4.

[0048] Since the inner diameter of the outer sleeve 20 matches the outer diameter of the water outlet pipe 4 and the second filter plate 24, the inner wall of the outer sleeve 20 is tightly fitted with the outer wall of the water outlet pipe 4 and the second filter plate 24, so that the outer sleeve 20 and the water outlet pipe 4 are reliably sealed during rotation. The process of geothermal water entering the water outlet pipe 4 and being discharged can only be achieved through the connection between the outer opening 21 and the water inlet 5 of the water outlet pipe. During this process, due to the different transmission ratios of the first and second gear sets, the rotation speeds of the outer sleeve 20 and the outlet pipe 4 are also different. Consequently, the area of ​​the outlet window (i.e., the area where the geothermal water can enter the outlet pipe 4 after the outer opening 21 and the outlet pipe inlet 5 overlap) formed by their mutual connection changes dynamically with the relative rotation. This results in a continuous dynamic change in the flow rate of the geothermal water, making the flow direction of the geothermal water at the outlet window more chaotic. This helps to disrupt the movement direction of fine sand and gravel particles in the geothermal water, making it easier for the fine sand and gravel particles in the geothermal water to move away from the outlet window and be thrown towards the outside of the cylinder 2 under the action of centrifugal force, thereby improving the separation effect.

[0049] Meanwhile, as the outer sleeve 20 and the outlet pipe 4 rotate relative to each other, the wall surface of the outer sleeve 20 forming the edge of the outer opening 21 can periodically scrape the outer surface of the second filter plate 24, thereby effectively removing the sand and gravel attached to the outer surface of the second filter plate 24, further reducing the risk of blockage caused by sand and gravel accumulation on the second filter plate 24, extending the continuous operation time of the equipment, and further improving the sand removal efficiency of geothermal water.

[0050] Optionally, the cross-sectional area of ​​the external opening 21 is larger than the cross-sectional area of ​​the water outlet inlet 5, so as to ensure that during the relative rotation of the external sleeve 20 and the water outlet pipe 4, the external opening 21 always has an overlapping area with the water outlet inlet 5, thereby ensuring that geothermal water flows continuously into the water outlet pipe 4 and improving the discharge efficiency of geothermal water.

[0051] In some embodiments, the water outlet pipe 4 is provided with an inner sleeve 8, the bottom end of the inner sleeve 8 is rotatably connected to the bottom surface of the inner wall of the water outlet pipe 4, the outer diameter of the inner sleeve 8 matches the inner diameter of the water outlet pipe 4, and an inner opening 9 is provided on the side of the inner sleeve 8, which can be connected to the water outlet pipe inlet 5 by the relative rotation of the inner sleeve 8 and the water outlet pipe 4. The outer side of the inner sleeve 8 is also provided with a soft brush 25. The inner opening 9 and the soft brush 25 are distributed along the circumference of the inner sleeve 8. The soft brush 25 can scrape the inner surface of the second filter plate 24 by the relative rotation of the inner sleeve 8 and the water outlet pipe 4.

[0052] In this embodiment, the inner sleeve 8 is rotatably connected to the outlet pipe 4. When the outlet pipe 4 rotates under the drive of the drive motor 10, the inner sleeve 8 can rotate relative to the outlet pipe 4 under the action of external force or inertia, thereby driving the internal opening 9 on the inner sleeve 8 to communicate with the inlet 5 of the outlet pipe. This allows the geothermal water entering from the inlet 5 of the outlet pipe to flow into the inner sleeve 8 through the internal opening 9, and then be discharged from the top of the inner sleeve 8 and enter the outlet pipe 4. At the same time, the soft brush 25 on the inner sleeve 8 periodically scrapes the inner surface of the second filter plate 24 as it rotates, thereby discharging the fine sand and gravel attached to the inside of the second filter plate 24 to the outside, thereby further reducing the risk of blockage caused by sand and gravel accumulation on the second filter plate 24, extending the continuous operation time of the equipment, and further improving the sand removal efficiency of geothermal water.

[0053] Based on this, the soft brush 25 provided on the outer wall of the inner sleeve 8 can cooperate with the arc-shaped filter plate. The soft brush 25 has extensibility and elasticity. One end of the soft brush 25 is embedded in the outer wall of the inner sleeve 8, and the other end is in contact with and compressed by the inner wall of the water outlet pipe 4. When the soft brush 25 rotates to the water inlet 5 of the water outlet pipe, the soft brush 25 extends and scrapes off the fine sand and gravel attached to the inside of the second filter plate 24 and pushes it to the outer surface of the cylinder 2. The wall surface of the outer sleeve 20 that forms the edge of the outer opening 21 can effectively scrape off this part of fine sand and gravel, thereby achieving coordinated sand cleaning on both the inner and outer sides of the second filter plate 24, effectively preventing the accumulation of sand and gravel on the inner and outer surfaces of the second filter plate 24, and ensuring that the second filter plate 24 always remains unobstructed.

[0054] Optionally, the inner sleeve 8 can be connected to other fixed components to achieve a stationary position within the water outlet pipe 4 (i.e., the inner sleeve 8 does not rotate with the rotation of the water outlet pipe 4, thus forming a relative rotation with the water outlet pipe 4 when the water outlet pipe 4 rotates). For example, a fixing rod can be installed inside the water outlet pipe 4, with one end connected to the inner sleeve 8 and the other end connected to a structure extending from the top opening of the water outlet pipe 4 and connected to other fixed structures to keep the inner sleeve 8 stationary. Alternatively, the inner sleeve 8 can be placed independently within the water outlet pipe 4 without being connected to other fixed components, relying on its own inertia to achieve relative rotation with the water outlet pipe 4. For example, when the water outlet pipe 4 rotates under the driving force, the inner sleeve 8 maintains a low-speed rotation due to inertia, thus forming a relative rotation with the water outlet pipe 4 when the water outlet pipe 4 rotates.

[0055] In some embodiments, the shapes of the internal opening 9 and the water inlet 5 of the outlet pipe are matched; the opening width of the external opening 21 is greater than the opening width of the water inlet 5 of the outlet pipe, so that the external opening 21 is always in communication with the water inlet 5 of the outlet pipe.

[0056] In this embodiment, the opening width refers to the width of the opening along the circumferential direction of the water outlet pipe.

[0057] Because the shape of the internal opening 9 matches that of the water inlet 5 of the outlet pipe, the flow cross-section of the geothermal water reaches its maximum when the two are completely overlapped, thereby improving the water flow efficiency and reducing flow resistance. The width of the external opening 21 is designed to be greater than the width of the water inlet 5 of the outlet pipe, ensuring that the external opening 21 remains connected to the water inlet 5 of the outlet pipe during the relative rotation of the external sleeve 20 and the outlet pipe 4, thereby ensuring a continuous and stable inflow of geothermal water, unaffected by the rotation angle of the external sleeve 20, and improving the discharge efficiency of the geothermal water.

[0058] It should be noted that when there are multiple external openings 21 and multiple water inlets 5, the opening width of the external opening 21 is greater than the opening width of the water inlet 5. This can mean that the sum of the widths of multiple external openings 21 is greater than the sum of the widths of multiple water inlets 5.

[0059] Optionally, the number of external openings 21 on the outer sleeve 20 is four, and the number of internal openings 9 and water inlet 5 of the water outlet pipe are two each, and they are set in pairs.

[0060] In some embodiments, the first filter plate 6 is fixedly connected to the cylinder 2; a scraper 16 is provided at the bottom of the partition plate 7, the bottom edge of the scraper 16 is used to clean the top surface of the first filter plate 6, and the outer edge of the scraper 16 is used to clean the inner wall of the cylinder 2.

[0061] In this embodiment, the scraper 16 is a vertically arranged square plate structure and is arranged between the first filter plate 6 and the partition plate 7. When the scraper 16 moves synchronously with the partition plate 7, the bottom edge of the scraper 16 slides close to the top surface of the first filter plate 6, effectively scraping away the sand particles deposited on the surface of the first filter plate 6. At the same time, the outer edge of the scraper 16 remains in contact with the inner wall of the cylinder 2, effectively scraping away the impurities attached to the inner wall of the cylinder 2. Thus, the first filter plate 6 and the inner wall of the cylinder 2 are cleaned simultaneously to prevent the accumulation of impurities from affecting the filtration effect.

[0062] In some embodiments, the outer edge of the scraper 16 is provided with a first brush 18, and the first brush 18 contacts the inner wall of the cylinder 2. The scraper 16 has a second brush 19 at its bottom edge, and the second brush 19 is in contact with the top surface of the first filter plate 6.

[0063] In this embodiment, the first brush 18 and the second brush 19 move synchronously with the scraper 16, which enhances the cleaning effect on the inner wall of the cylinder 2 and the top surface of the first filter plate 6, effectively removes the fine sand and gravel attached to the inner wall of the cylinder 2 and the top surface of the first filter plate 6, and improves the cleaning efficiency of the first filter plate 6 and the inner wall of the cylinder 2.

[0064] Optionally, the bottom edge of the scraper 16 has a downwardly protruding protrusion 17 at one end near the outer side, and the bottom end of the first brush 18 extends to the outside of the protrusion 17, thereby increasing the coverage of the first brush 18 in cleaning the inner wall of the cylinder 2.

[0065] In some embodiments, the swirling mechanism includes a connecting rod 22 and a plurality of spiral blades 23, wherein the connecting rod 22 is arranged at the bottom of the water outlet pipe 4; Multiple helical blades 23 are disposed on the side of the connecting rod 22. In this embodiment, multiple spiral blades 23 are arranged on the connecting rod 22 and coaxially connected to the connecting rod 22. They are driven by the drive mechanism to rotate, which drives the geothermal water entering the desander to form a more stable spiral flow, prolonging the residence time of sand and gravel in the cylinder 2 and enhancing the centrifugal separation effect. The spiral flow can reduce the radial velocity of the fluid and reduce the migration of lighter sand and gravel to the central area (in the direction of the outlet pipe 4).

[0066] This application also proposes a method for using a geothermal sand removal device, applied to a geothermal sand removal device 1 as described in any of the above embodiments. The geothermal sand removal device includes a cylinder 2, an inlet pipe 3, an outlet pipe 4, a drive mechanism, a vortex mechanism, a first filter plate 6, and a second filter plate 24, including the following steps: Geothermal water is injected into the cylinder 2 through the inlet pipe 3, and the outlet pipe 4 and the vortex mechanism are driven to rotate through the drive mechanism to generate vortex flow in the cylinder 2. The geothermal water flowing into the inlet 5 of the outlet pipe is filtered sequentially by the first filter plate 6 and the second filter plate 24, and the filtered geothermal water is removed from the cylinder 2 through the outlet pipe 4.

[0067] In this embodiment, the cooperation of the first filter plate 6 and the second filter plate 24 forms a two-stage filtration system between the inlet pipe 3 and the outlet pipe 4 of the sand removal device 1. This system can effectively intercept and filter fine sand and gravel in the geothermal water, significantly improving the sand removal efficiency. Combined with the centrifugal force generated by the vortex mechanism, it can effectively separate sand and gravel of different sizes in the geothermal water, further improving the sand removal capacity of the geothermal water.

[0068] Meanwhile, the first filter plate 6 is sealed between the bottom of the outlet pipe 4 and the inner wall of the cylinder 2. Its area is much larger than that of the second filter plate 24, so it can withstand a larger amount of sand and gravel interception, thereby reducing the filtration burden of the second filter plate 24. Furthermore, the second filter plate 24 is arranged at the inlet 5 of the outlet pipe and rotates synchronously with the outlet pipe 4, so that some of the sand and gravel particles attached to the surface of the second filter plate 24 are thrown towards the inner wall of the cylinder 2 under the action of centrifugal force. Thus, through the cooperation of the first filter plate 6 and the outlet pipe 4, the risk of blockage caused by sand and gravel accumulation to the second filter plate 24 can be minimized, the continuous operation time of the equipment can be extended, and the sand removal efficiency of geothermal water can be further improved.

[0069] Optionally, the specific methods of using geothermal sand removal equipment may include: Geothermal water is pumped into the cylinder 2 through the inlet pipe 3 along the tangential direction of the desanding device 1 using a water pump or other means. The drive motor 10 is started, and the output end of the drive motor 10 rotates, driving the connecting shaft 11 to rotate. The rotation of the connecting shaft 11 simultaneously drives the first drive gear 12 and the second drive gear 14 to rotate. The first drive gear 12 and the second drive gear 14 respectively drive the first gear 13 and the second gear 15 to rotate, and the first gear 13 and the second gear 15 rotate at different speeds. The second gear 15 drives the partition plate 7 to rotate, and the partition plate 7 drives the outer sleeve 20, the connecting rod 22 and multiple spiral blades 23 to rotate. The rotation of the spiral blades 23 drives the geothermal water entering the cyclone desander to form a more stable spiral flow, prolonging the residence time of sand and gravel in the cylinder 2 and enhancing the centrifugal separation effect. The spiral flow can reduce the radial velocity of the fluid and reduce the migration of lighter sand and gravel to the central area (in the direction of the outlet pipe 4).

[0070] Because some sand and gravel have a density greater than that of water, the sand and gravel in the geothermal water settle along the inner wall of the cylinder 2, while some fine sand and gravel and water flow move toward the axis of the cylinder 2 and rotate upwards. During the movement, some sand and gravel and debris are blocked by the initial filtration of the first filter plate 6.

[0071] As the water outlet pipe 4 rotates, the external opening 21 of the outer sleeve 20, the water outlet inlet 5 of the water outlet pipe 4, and the internal opening 9 of the inner sleeve 8 will be connected. At this time, the water flow after double filtration by the first filter plate 6 and the second filter plate 24 will be transferred out of the sand removal device 1 through the outer sleeve 20, the water outlet pipe 4, and the inner sleeve 8 in sequence. As the water outlet pipe 4 drives the second filter plate 24 to rotate, the second filter plate 24 will be cleaned by the soft brush 25 on the inner sleeve 8 to remove the fine sand and gravel attached to it. At the same time, the rotation of the partition 7 drives the scraper 16 to rotate, and the scraper 16 drives multiple first brushes 18 and multiple second brushes 19 to rotate around the axis of the partition 7, thereby cleaning the inner wall of the cylinder 2 and the first filter plate 6, scraping and removing the sand and gravel residue remaining on the inner wall of the cylinder 2 and the first filter plate 6, thus ensuring the sand removal performance of the geothermal water.

[0072] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A geothermal water sand removal device, characterized in that, It includes a cylinder (2), a drive mechanism and a vortex mechanism. The top of the cylinder (2) is rotatably connected to a water outlet pipe (4), and the bottom of the water outlet pipe (4) extends into the cylinder (2). The drive mechanism is in transmission cooperation with the water outlet pipe (4) and the vortex mechanism to drive the water outlet pipe (4) and the vortex mechanism to rotate. The side wall of the cylinder (2) is provided with an inlet pipe (3), and the outlet pipe (4) is provided with an outlet pipe inlet (5). The height of the outlet pipe inlet (5) is higher than that of the inlet pipe (3). A first filter plate (6) is provided between the bottom of the outlet pipe (4) and the inner wall of the cylinder (2). The first filter plate (6) seals the space between the inlet pipe (3) and the outlet pipe inlet (5). The water outlet (5) is also covered with a second filter plate (24), the mesh diameter of which is smaller than that of the first filter plate (6).

2. The geothermal water sand removal equipment according to claim 1, characterized in that, The driving mechanism includes a drive motor (10), which is located on the top of the cylinder (2). The output end of the drive motor (10) is coaxially connected to the connecting shaft (11). The connecting shaft (11) and the water outlet pipe (4) are connected by a first gear set. The connecting shaft (11) and the vortex mechanism are connected by a second gear set.

3. The geothermal water sand removal equipment according to claim 2, characterized in that, The cylinder (2) is also provided with a partition (7), which is sleeved on the water outlet pipe (4) and arranged at a position higher than the water outlet pipe inlet (5). The partition (7) and the top of the cylinder (2) cooperate to form a sealed chamber. The connecting shaft (11), the first gear set and the second gear set are all located in the sealed chamber. The partition (7) is rotatably connected to the water outlet pipe (4) and the cylinder (2) respectively. An outer sleeve (20) is fixedly connected to the bottom of the partition (7). The outer sleeve (20) is sleeved outside the water outlet pipe (4). The bottom of the outer sleeve (20) passes through the first filter plate (6) and is fixedly connected to the vortex mechanism. The connecting shaft (11) is connected to the partition (7) through a second gear set.

4. The geothermal water sand removal equipment according to claim 3, characterized in that, The transmission ratios of the first gear set and the second gear set are different; The inner diameter of the outer sleeve (20) matches the outer diameter of the water outlet pipe (4) and the second filter plate (24) so ​​that the inner wall of the outer sleeve (20) can fit against the outer wall of the water outlet pipe (4) and the second filter plate (24). An external opening (21) is provided on the side of the outer sleeve (20). The external opening (21) can be connected to the water outlet inlet (5) of the water outlet pipe through the relative rotation of the outer sleeve (20) and the water outlet pipe (4).

5. A geothermal water sand removal device according to claim 4, characterized in that, The water outlet pipe (4) is provided with an inner sleeve (8). The bottom end of the inner sleeve (8) is rotatably connected to the bottom surface of the inner wall of the water outlet pipe (4). The outer diameter of the inner sleeve (8) matches the inner diameter of the water outlet pipe (4). An inner opening (9) is provided on the side of the inner sleeve (8). The inner opening (9) can be connected to the water outlet inlet (5) of the water outlet pipe through the relative rotation of the inner sleeve (8) and the water outlet pipe (4). The outer side of the inner sleeve (8) is also provided with a soft brush (25). The inner opening (9) and the soft brush (25) are distributed along the circumference of the inner sleeve (8). The soft brush (25) can scrape the inner surface of the second filter plate (24) by the relative rotation of the inner sleeve (8) and the water outlet pipe (4).

6. The geothermal water sand removal equipment according to claim 5, characterized in that, The shapes of the internal opening (9) and the water inlet (5) of the water outlet pipe are matched; the opening width of the external opening (21) is greater than the opening width of the water inlet (5) of the water outlet pipe, so that the external opening (21) is always connected to the water inlet (5).

7. A geothermal water sand removal device according to claim 3, characterized in that, The first filter plate (6) is fixedly connected to the cylinder (2); a scraper (16) is provided at the bottom of the partition plate (7), the bottom edge of the scraper (16) is used to clean the top surface of the first filter plate (6), and the outer edge of the scraper (16) is used to clean the inner wall of the cylinder (2).

8. A geothermal water sand removal device according to claim 7, characterized in that, The outer edge of the scraper (16) is provided with a first brush (18), and the first brush (18) contacts the inner wall of the cylinder (2). The scraper (16) has a second brush (19) at its bottom edge, and the second brush (19) contacts the top surface of the first filter plate (6).

9. A geothermal water sand removal device according to claim 1, characterized in that, The swirling mechanism includes a connecting rod (22) and multiple spiral blades (23), with the connecting rod (22) arranged at the bottom of the outlet pipe (4).

10. A method of using a geothermal water sand removal device, characterized in that, An application is made to a geothermal sand removal device as described in any one of claims 1-9, the geothermal sand removal device comprising a cylinder (2), an inlet pipe (3), an outlet pipe (4), a drive mechanism, a vortex mechanism, a first filter plate (6), and a second filter plate (24), comprising the following steps: Geothermal water is injected into the cylinder (2) from the inlet pipe (3), and the outlet pipe (4) and the vortex mechanism are driven to rotate by the drive mechanism so that the geothermal water in the cylinder (2) generates a vortex. The geothermal water flowing into the inlet (5) of the outlet pipe of the inlet pipe (3) is filtered by the first filter plate (6) and the second filter plate (24) in sequence, and the filtered geothermal water is removed from the cylinder (2) through the outlet pipe (4).

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