An integrated device for geothermal water sand removal, filtration and purification

Abstract

The present invention discloses an integrated device for desanding, filtering and purifying geothermal water, which relates to the field of geothermal water purification devices. The device comprises a filter cylinder, an end cover is provided on the top of the filter cylinder, a filter unit is provided inside the filter cylinder, the filter unit is composed of a filter sand layer, a plurality of sponge colloid cleaning balls laid on the top of the filter sand layer, at least four metal sintered mesh filter elements, a compression spring and a support structure for supporting the metal sintered mesh filter element, the support structure is a support member one or a support member two; a cyclone desanding cylinder; the present invention overcomes the limitations of the commonly used hierarchical and decentralized installation of desanding, filtering and purification methods, such as large equipment installation space, high equipment cost, large pressure loss along the process and high probability of colloid penetration, by providing a more concise, efficient, safe and economical geothermal water desanding, filtration and purification integrated device, so as to achieve the purpose of getting rid of the installation space limitation, reducing the pressure loss along the purification process and more thorough purification.

Description

Technical Field

[0001] The present invention relates to the technical field related to geothermal water purification devices, and specifically to an integrated device for geothermal water sand removal, filtration and purification. Background Art

[0002] Geothermal well water and mine water often contain suspended particles of different sizes, colloids and other turbidity. At present, geothermal well water purification treatment for geothermal heating applications (including mine water recycling in industrial and mining enterprises) basically adopts a graded and decentralized installation equipment with first-stage cyclone sand removal, second-stage primary filtration, and third-stage fine filtration for step-by-step sand removal and purification. Its working principle is that the raw water passes through the first-stage filter or cyclone sand removal to separate large-particle suspended matter, and then is transported to the second-stage primary filter through a pipeline. After the larger particle suspended matter is filtered out through the second stage, it is then transported to the third-stage fine filter through a pipeline to filter out small-particle suspended matter and some large-particle colloid substances before being put into use.

[0003] The graded and decentralized installation of sand removal and filtration method has poor economic efficiency due to the high cost of each level of equipment, and the installation space is generally low in applicability. The equipment at each level is connected in series through pipelines, which increases the water resistance along the water treatment process, resulting in increased water pump head and power consumption. The lack of sand core pore channel filtration throughout the process increases the risk of colloid penetration in the raw water, resulting in blockage of the pore channels in the recharge well aquifer and increased probability of other risks. Summary of the Invention

[0004] In order to solve the defects of the prior art, the present invention provides an integrated device for desanding, filtration and purification of geothermal water.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides an integrated device for sand removal, filtration and purification of geothermal water, comprising a filter cylinder, an end cap being provided on the top of the filter cylinder, a filter unit being provided inside the filter cylinder, the filter unit being composed of a filter sand layer, a plurality of sponge colloid cleaning balls laid on the top of the filter sand layer, at least four metal sintered mesh filter elements, a compression spring, and a support structure for supporting the metal sintered mesh filter elements, the support structure being support member 1 or support member 2;

[0007] A cyclone sand removal cylinder is provided at the bottom of the filter cylinder. A sand core tray filter screen is provided on the top of the cyclone sand removal cylinder for supporting the filter sand layer. A sand storage cylinder is provided below the cyclone sand removal cylinder. The top of the sand storage cylinder is connected to the cyclone sand removal cylinder through a sedimentation pipe. A sewage pipe is provided at the bottom of the sand storage cylinder.

[0008] A micro weight transmitter for sensing the weight change of sediment in the sand storage tank and transmitting the weight signal, and a differential pressure transmitter for detecting the pressure difference between the inlet and outlet;

[0009] The measurement and control electrical box is electrically connected to the micro-weight transmitter and the differential pressure transmitter, and the measurement and control electrical box can control the opening and closing of the valve by receiving the detection signal.

[0010] As a preferred technical solution of the present invention, the supporting member comprises a filter element fastening rod welded and fixed to the bottom of the end cover, a filter element receiving tray provided at the bottom of the metal sintered mesh filter element, and a filter element pressing plate provided at the top of the metal sintered mesh filter element, the filter element receiving tray and the filter element pressing plate are both provided with a fastening hole capable of accommodating the filter element fastening rod to pass through, the top of the filter element receiving tray and the bottom of the filter element pressing plate are both provided with at least four annular positioning protrusions for positioning the metal sintered mesh filter element, and the filter element receiving tray is provided with a water hole corresponding to the annular positioning protrusion, so that the sponge colloid cleaning ball can enter the metal sintered mesh filter element and perform Brownian motion under the action of the rising force of the water body, and the bottom of the filter element receiving tray is provided with a fastening nut screwed to the filter element fastening rod for fastening the filter element receiving tray;

[0011] The compression spring is sleeved outside the filter element fastening rod and is located between the end cover and the filter element compression plate.

[0012] As a preferred technical solution of the present invention, the second supporting member is composed of a second filter element supporting tray arranged at the bottom of the metal sintered mesh filter element, a second filter element pressing plate arranged at the top of the metal sintered mesh filter element, a fastening assembly, an air charging and discharging assembly and a plurality of sealing assemblies, the second filter element supporting tray and the second filter element pressing plate are both provided with a second fastening hole, the second filter element supporting tray and the second filter element pressing plate are both provided with at least four air paths connected with the second fastening hole, the top of the second filter element supporting tray and the bottom of the second filter element pressing plate are both provided with at least four annular positioning protrusions two for positioning the metal sintered mesh filter element, a plurality of mounting holes are further provided on one side of the second annular positioning protrusion, one of the mounting holes is connected with the air path, and the second filter element supporting tray is provided with a second water hole corresponding to the second annular positioning protrusion, so that the sponge colloid cleaning ball can enter the metal sintered mesh filter element and perform Brownian motion under the action of the rising force of the water body;

[0013] The sealing assembly includes an annular support body installed on one side of the second annular positioning protrusion. A sealing airbag is provided in the installation ring groove of the annular support body to prevent water from being discharged from the gap between the second annular positioning protrusion and the metal sintered mesh filter element. A mounting column for plugging into the mounting hole is provided on one side of the annular support body, and an air hole connected to the sealing airbag is opened on one of the mounting columns, and the air hole is connected to the air path through one of the mounting holes.

[0014] As a preferred technical solution of the present invention, the fastening assembly includes a fastening rod and a control cap that are provided on the end cover, a cavity is provided in the fastening rod, and two groups of communicating holes that can be connected to the air path are provided outside the cavity, one end of the fastening rod is provided with an annular limiting protrusion protruding outward, an L-shaped limiting groove is further provided on the outer wall of one end of the fastening rod, a connecting pipe that is connected to the cavity is further provided between the annular limiting protrusion and the L-shaped limiting groove, one end of the connecting pipe is connected to the inflation and deflation equipment through a pipeline, and a control block that slides with the L-shaped limiting groove is provided on the inner wall of the open end of the control cap, a clamping cylinder is provided on the inner side of the control cap, and a clamping hole is provided at the closed end of the clamping cylinder;

[0015] The filter element tray 2 and the bottom of the end cover are both provided with a fastening nut 2 threadedly connected to the fastening rod for fixing the filter element tray 2 and the fastening rod, and the compression spring is sleeved outside the fastening rod and located between the end cover and the filter element compression plate 2.

[0016] As a preferred technical solution of the present invention, the inflation and deflation assembly includes a transmission rod that is provided through the fastening rod and is rotatably connected to the fastening rod, an elastic support frame that is provided in the cavity and corresponds to the communicating hole, and an extrusion groove wheel provided in the elastic support frame, wherein the extrusion groove wheel is sleeved and fixed to the outside of the fastening rod, the elastic support frame is composed of four elastic members distributed in a rectangular shape and a rigid part that supports the elastic members, the rigid part is used to be connected to the fastening rod, and a sealing column that can block the communicating hole is provided through the elastic member, and one end of the sealing column is provided with a truncated cone-shaped mating part that can cooperate with the extrusion groove wheel;

[0017] The fastening rod is slidably connected to the clamping cylinder, and one end of the fastening rod located outside the cavity is provided with a clamping joint matched with the clamping hole.

[0018] As a preferred technical solution of the present invention, the cyclone sand removal cylinder body is composed of a cylindrical cylinder connected to the bottom of the filter cylinder body and an inverted conical shell welded to the bottom of the cylindrical cylinder body. The top of the cylindrical cylinder body is provided with an inwardly protruding annular inner lining for installing a sand core tray filter screen. The middle part of the cylindrical cylinder body is provided with a tangential water inlet pipe for increasing the rotation effect of the water flow. One end of the tangential water inlet pipe is connected to an electric water inlet valve, and an equipment bracket is welded and fixed to the outside of the conical shell.

[0019] As a preferred technical solution of the present invention, a radial water outlet pipe is provided on the upper portion of the filter cylinder, and one end of the radial water outlet pipe is connected to a water outlet electric valve.

[0020] As a preferred technical solution of the present invention, one end of the sewage pipe is connected to a sewage solenoid valve, and the other end of the sewage pipe is provided with an annular mounting seat for installing a micro-weight transmitter. Two annular ridges are provided on the top of the annular mounting seat from the outside to the inside, and a positioning column is provided on the top of the inner annular ridge, and the micro-weight transmitter is arranged between the two annular ridges.

[0021] As a preferred technical solution of the present invention, an annular support plate in contact with the detection end of the micro-weight transmitter is installed on the top of the annular mounting seat, and a positioning hole connected to the positioning column is opened at the bottom of the annular support plate.

[0022] As a preferred technical solution of the present invention, an exhaust port and a high-pressure air inlet are provided on the top of the end cover, one end of the exhaust port is connected to an exhaust solenoid valve, and one end of the high-pressure air inlet is connected to an air inlet solenoid valve.

[0023] The beneficial effects of the present invention are:

[0024] 1. This geothermal water desanding, filtration and purification integrated device has an integrated design that makes the equipment more compact and realizes innovation in equipment structure. It can be widely used in water treatment and filtration systems in various industries, and the equipment cost is lower.

[0025] 2. This geothermal water desanding, filtration and purification integrated device has an integrated modular design, which reduces the installation space of water treatment equipment and the amount of pipes, valves and fittings used. It can operate for a long time and is more economical to use.

[0026] 3. This geothermal water desanding, filtration and purification integrated device reduces pump consumption by reducing pressure loss along the entire water treatment process, making the equipment more energy-efficient.

[0027] 4. This geothermal water desanding, filtration and purification integrated device uses a sand core filter layer of a certain thickness to simulate the water-bearing pore channels of geothermal heat storage, intercepting most of the water-soluble colloids for more thorough filtration. Better water quality helps reduce internal wear of the system's downstream water-using equipment and extend equipment life. It effectively prevents blockage of the heat storage aquifer, facilitates tailwater recharge, and makes equipment and facilities more efficient.

[0028] 5. This geothermal water desanding, filtration and purification integrated device has a segmented design, is easy to manufacture and easy to assemble and disassemble, and makes the whole process of geothermal water treatment, use and maintenance easier.

[0029] 6. This geothermal water sand removal, filtration and purification integrated device fixes the metal sintered mesh filter element through a compression spring and a support member consisting of a filter element support tray, a filter element compression plate and a filter element fastening rod on the end cover. It has a simple structure and low cost.

[0030] 7. This geothermal water sand removal, filtration and purification integrated device can not only fix the metal sintered mesh filter element through the compression spring and the supporting member 2, but also seal it through the sealing airbag that contacts the inner wall of the metal sintered mesh filter element after inflation, preventing water that has not been filtered by the metal sintered mesh filter element from flowing out from the gap between the annular positioning protrusion 2 and the metal sintered mesh filter element, thereby improving the filtering effect.

[0031] 8. This geothermal water sand removal, filtration and purification integrated device drives the extrusion sheave to rotate a certain angle through a transmission rod. With the help of a frustum-shaped mating part that can cooperate with the extrusion sheave and an elastic part, it is selected whether to use a sealing column to block the connecting hole, thereby being able to simultaneously control the inflation and deflation of multiple sealing airbags. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic structural diagram of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0034] Figure 2 This is a schematic diagram of the water flow direction of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0035] Figure 3 This is a schematic diagram of the internal structure of a filter cylinder of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0036] Figure 4 This is a schematic diagram of the connection structure of the end cover, support member 1, compression spring and metal sintered mesh filter element of an integrated device for geothermal water sand removal, filtration and purification of the present invention;

[0037] Figure 5 This is a schematic diagram of the support component 1, the compression spring and the metal sintered mesh filter element structure of an integrated device for geothermal water sand removal, filtration and purification of the present invention;

[0038] Figure 6 This is a schematic diagram of the connection structure of the end cover, support member 2, compression spring and metal sintered mesh filter element of an integrated device for geothermal water sand removal, filtration and purification of the present invention;

[0039] Figure 7 This is a schematic structural diagram of a second support member of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0040] Figure 8 This is a schematic diagram of the sealing component structure of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0041] Figure 9 This is a three-dimensional cutaway view of a filter element and compression plate of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0042] Figure 10 This is a schematic diagram of the fastening component structure of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0043] Figure 11 This is a schematic diagram of the fastening rod structure of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0044] Figure 12 This is a schematic diagram of the control cap structure of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0045] Figure 13 This is a schematic diagram of the internal structure of the fastening rod and control cap of an integrated device for desanding, filtration and purification of geothermal water according to the present invention;

[0046] Figure 14 This is a schematic diagram of the structure of the gas filling and discharging components of an integrated device for geothermal water sand removal, filtration and purification according to the present invention;

[0047] Figure 15 This is a schematic diagram of the structure of a cyclone sand removal cylinder and a sand core tray filter screen of an integrated device for geothermal water sand removal, filtration and purification according to the present invention;

[0048] Figure 16 This is a schematic diagram of the structure of a cyclone sand removal cylinder and a sewage pipe of an integrated device for geothermal water sand removal, filtration and purification according to the present invention;

[0049] Figure 17 This is a schematic diagram of the sewage pipe structure of an integrated device for geothermal water sand removal, filtration and purification according to the present invention;

[0050] Figure 18 This is a schematic diagram of the structure of an annular support plate of an integrated device for desanding, filtration and purification of geothermal water according to the present invention.

[0051] In the figure: 1. filter cylinder; 11. radial outlet pipe; 12. end cap; 2. cyclone sand removal cylinder; 21. tangential water inlet pipe; 22. sand storage cylinder; 23. annular liner; 24. sedimentation pipe; 25. sewage pipe; 251. annular mounting seat; 252. micro-weight transmitter; 253. positioning plug; 254. annular support plate; 255. positioning socket; 3. differential pressure transmitter; 4. filter sand layer; 5. sponge rubber cleaning ball; 6. sand core tray filter; 7. support member 1; 71. filter element tray 1; 72. fastening nut 1; 73. filter element pressing plate 1; 74. fastening hole 1; 75. filter element fastening rod; 76. annular positioning protrusion 1; 77. water hole 1; 8. support member 2; 81 , filter element support tray 2; 82, filter element pressing plate 2; 821, annular positioning protrusion 2; 822, mounting hole; 823, air path; 83, sealing assembly; 831, annular support body; 832, mounting column; 833, sealing airbag; 84, fastening rod; 841, connecting hole; 842, L-shaped limiting groove; 843, annular limiting protrusion; 844, connecting pipe; 85, charging and discharging assembly; 851, transmission rod; 852, sealing column; 853, rigid part; 854, elastic part; 855, extrusion groove wheel; 86, fastening nut 2; 87, control cap; 871, clamping cylinder; 872, clamping hole; 873, control block; 88, clamping joint; 9, compression spring; 10, metal sintered mesh filter element. DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] Example: Figure 1-3 The present invention provides an integrated device for sand removal, filtration and purification of geothermal water, comprising a filter cylinder 1, an end cap 12 being provided on the top of the filter cylinder 1, a filter unit being provided inside the filter cylinder 1, the filter unit being composed of a filter sand layer 4, a plurality of sponge colloid cleaning balls 5 laid on the top of the filter sand layer 4, at least four metal sintered mesh filter elements 10, a compression spring 9 and a support structure for supporting the metal sintered mesh filter element 10, the support structure being a support member 1 7 or a support member 2 8;

[0054] A cyclone desanding cylinder 2 is provided at the bottom of the filter cylinder 1. A sand core tray filter screen 6 is provided on the top of the cyclone desanding cylinder 2 for supporting the filter sand layer 4. A sand storage cylinder 22 is provided below the cyclone desanding cylinder 2. The top of the sand storage cylinder 22 is connected to the cyclone desanding cylinder 2 via a sedimentation pipe 24. A sewage pipe 25 is provided at the bottom of the sand storage cylinder 22.

[0055] A micro weight transmitter 252 for sensing the weight change of the sediment in the sand storage cylinder 22 and transmitting a weight signal, and a differential pressure transmitter 3 for detecting the pressure difference between the water inlet and outlet;

[0056] The measurement and control electrical box is electrically connected to the micro-weight transmitter 252 and the differential pressure transmitter 3, and can control the opening and closing of the valve through the received detection signal.

[0057] In this embodiment, the sand core tray filter 6 is selected according to the purpose of being smaller than the selected quartz sand particle size, having a total flux not less than 60% of the inner diameter flux of the filter cylinder 1 and a mesh number not less than 30 meshes. The sand core tray filter 6 (not less than 30 meshes, the mesh number of the filter is selected according to the target purity of the water treatment and the particle size of the overlying quartz sand used) is formed by laying a certain thickness of quartz sand with a particle size selected according to the particle size specification of the geothermal well water suspended matter. A filter sand layer 4 is formed thereon; when the thickness of the filter sand layer 4 is stable at the maximum treatment flow rate, the water flow passing through the sand core tray filter 6 in the lower part of the sand layer is disturbed by the hydraulic influence and the pore channels are continuously slightly reorganized, while the upper part is slightly disturbed, the degree of pore channel reorganization is low, and the normal infiltration of the water body is met.

[0058] In this embodiment, the filter sand layer 4 is laid to a certain thickness, and the sand particles form irregular pore channels depending on the size of the sand particles. After the water and gas separated by the cyclone sand removal pass through the sand core tray filter 6, the suspended particles and most of the colloids are retained in the pore channels, playing a role of permeation filtration.

[0059] In this embodiment, the volume of the sponge colloid cleaning ball 5 after absorbing water and expanding is no more than 50% of the total volume of the inner cavity of all the metal sintered mesh filter elements 10 (4-8 filter elements). The density of the sponge colloid cleaning ball 5 after expanding with water is close to that of water. Under the action of the buoyancy of the water body and the upward hydrodynamic force, the sponge colloid cleaning ball 5 enters the metal sintered mesh filter element 10 and performs Brownian motion.

[0060] In this embodiment, the water pressure difference between the inlet and outlet is monitored in real time by the pressure differential transmitter 3. When the water pressure difference is greater than the set value, a control signal is sent through the measurement and control electrical box to close the water inlet and outlet electric valves and the exhaust solenoid valve, and open the bottom sewage outlet solenoid valve and the top high-pressure air inlet solenoid valve. The high-pressure gas in the external high-pressure gas storage tank enters the device shell to start backwashing, and the attachments on the inner wall of the metal sintered mesh filter element 10 fall off and enter the filter sand layer 4. Under the action of high-pressure airflow and gravity, the filter sand layer 4 is strongly disturbed, and the pore channels are violently reorganized under the blowing of high-pressure airflow. The attachments on the upper part and the particles and colloids in the original pore channels fall off and sink to the bottom, and are discharged through the sand storage cylinder 22 and the sewage outlet to complete the backwashing of the equipment.

[0061] After the backwash of the equipment is completed, the measurement and control electrical box controls the closure of the top high-pressure air inlet solenoid valve and the bottom sewage outlet solenoid valve, and opens the inlet and outlet electric valves and the exhaust solenoid valve, entering the normal water treatment process.

[0062] It should be noted that the installation position and installation method of the measurement and control electrical box are not limited here. It can be installed on the outer wall of the filter cylinder 1 or the cyclone sand removal cylinder 2, or in other places, so it is not marked in the drawings.

[0063] Among them, such as Figure 4 and Figure 5 As shown, the support member 7 includes a filter element fastening rod 75 welded and fixed to the bottom of the end cover 12, a filter element receiving tray 71 provided at the bottom of the metal sintered mesh filter element 10, and a filter element pressing plate 73 provided at the top of the metal sintered mesh filter element 10. The filter element receiving tray 71 and the filter element pressing plate 73 are both provided with a fastening hole 74 for accommodating the filter element fastening rod 75 to pass through. The top of the filter element receiving tray 71 and the bottom of the filter element pressing plate 73 are both provided with at least four annular positioning protrusions 76 for positioning the metal sintered mesh filter element 10, and the filter element receiving tray 71 is provided with a water hole 77 corresponding to the annular positioning protrusion 76, so that the sponge colloid cleaning ball 5 can enter the metal sintered mesh filter element 10 and perform Brownian motion under the action of the rising force of the water body. The bottom of the filter element receiving tray 71 is provided with a fastening nut 72 screwed to the filter element fastening rod 75 for fastening the filter element receiving tray 71;

[0064] The compression spring 9 is sleeved on the outside of the filter element fastening rod 75 and is located between the end cover 12 and the filter element compression plate 73. The number of water holes 77 is 4 to 8, and the number of filter elements used in the cylinder diameter specification is determined by the water treatment volume of a single unit. The support member 7 composed of the filter element support tray 71, the metal sintered mesh filter element 10, the filter element compression plate 73 and the compression spring 9 and the filter element fastening rod 75 on the end cover 12 has a simple structure and low cost.

[0065] After the filter element tray 71, the metal sintered mesh filter element 10, the filter element pressing plate 73 and the pressing spring 9 are assembled with the filter element fastening rod 75 on the end cover 12, they are installed in the filter cylinder 1 on which the filter sand layer 4 and the sponge rubber cleaning balls 5 have been laid. After the end cover 12 is fastened with a set of bolts and partially connected and fixed with the cyclone sand removal cylinder 2, the equipment assembly is completed.

[0066] The metal sintered mesh filter element 10 (the filter mesh aperture is selected depending on the target water treatment purity) is positioned by the annular positioning protrusion 76 and is compressed and suspended by the compression spring 9 and fixed under the end cover 12; the water and gas in the metal sintered mesh filter element 10 pass through the filter mesh under the action of pressure, and small-sized suspended solids and colloids larger than the target particle size for filtration are retained in the inner cavity of the metal sintered mesh filter element 10. They are disturbed by the sponge colloid cleaning balls 5 performing Brownian motion in the cavity, and the probability of adhesion to the inner wall of the metal sintered mesh filter element 10 is reduced. When the flow velocity in the cavity decreases, the rising force of the water flow decreases and the colloids sink into the filter sand layer 4.

[0067] Among them, such as Figure 6-9 As shown, the supporting member 2 8 is composed of a filter element tray 2 81 provided at the bottom of the metal sintered mesh filter element 10, a filter element pressing plate 2 82 provided at the top of the metal sintered mesh filter element 10, a fastening assembly, an air charging and discharging assembly 85, and a plurality of sealing assemblies 83. The filter element tray 2 81 and the filter element pressing plate 2 82 are both provided with fastening holes 2, and the filter element tray 2 81 and the filter element pressing plate 2 82 are both provided with at least four air paths 823 connected to the fastening holes 2. At least four annular positioning protrusions 821 are provided on the top and bottom of the second filter element pressing plate 82 for positioning the metal sintered mesh filter element 10. A plurality of mounting holes 822 are also provided on one side of the second annular positioning protrusion 821, one of which is connected to the air path 823. In addition, a water hole 82 is provided on the second filter element supporting plate 81 corresponding to the second annular positioning protrusion 821, so that the sponge colloid cleaning ball 5 can enter the metal sintered mesh filter element 10 under the action of the rising force of the water body and perform Brownian motion.

[0068] The sealing assembly 83 includes an annular support body 831 installed on one side of the annular positioning protrusion 821. A sealing airbag 833 is provided in the installation ring groove of the annular support body 831 to prevent water from being discharged from the gap between the annular positioning protrusion 821 and the metal sintered mesh filter element 10. A mounting column 832 for plugging into the mounting hole 822 is provided on one side of the annular support body 831. An air hole connected to the sealing airbag 833 is opened on one of the mounting columns 832. The air hole is connected to the air path 823 through one of the mounting holes 822. The set air hole can make the gas entering the air path 823 flow to the sealing airbag 833; the number of water holes 2 is 4 to 8, and the number of filter elements used in the cylinder diameter specification is determined according to the water treatment capacity of a single unit.

[0069] The gas enters the sealing airbag 833 through the air path 823, the mounting hole 822 and the air hole, causing the sealing airbag 833 to inflate and expand, so that the sealing airbag 833 contacts the inner wall of the metal sintered mesh filter element 10, thereby sealing, preventing water that has not been filtered by the metal sintered mesh filter element 10 from flowing out from the gap between the annular positioning protrusion 821 and the metal sintered mesh filter element 10, thereby improving the filtering effect.

[0070] Among them, such as Figure 10-13 As shown, the fastening assembly includes a fastening rod 84 and a control cap 87 that are arranged on the end cover 12. A cavity is provided in the fastening rod 84, and two groups of communicating holes 841 that can be connected to the air path 823 are provided outside the cavity. An annular limiting protrusion 843 protruding outward is provided at one end of the fastening rod 84, and an L-shaped limiting groove 842 is further provided on the outer wall of one end of the fastening rod 84. A connecting pipe 844 that is connected to the cavity is further provided between the annular limiting protrusion 843 and the L-shaped limiting groove 842. One end of the connecting pipe 844 is connected to the inflation and deflation equipment through a pipeline, and a control block 873 that slides with the L-shaped limiting groove 842 is provided on the inner wall of the open end of the control cap 87. A clamping cylinder 871 is provided on the inner side of the control cap 87, and a clamping hole 872 is provided at the closed end of the clamping cylinder 871.

[0071] The bottom of the filter element tray 81 and the end cover 12 are both provided with a fastening nut 86 screwed to the fastening rod 84 for fixing the filter element tray 81 and the fastening rod 84, and the compression spring 9 is sleeved outside the fastening rod 84 and located between the end cover 12 and the filter element compression plate 82. The fastening rod 84 can be fixed to the end cover 12 through the cooperation of the annular limiting protrusion 843 and the fastening nut 86 located at the lower part of the end cover 12.

[0072] After the sealing airbag 833 is inflated, the control cap 87 is pulled upward. When the control block 873 moves upward along the L-shaped limit groove 842 to the top, the clamping joint 88 enters the clamping hole 872. Then, the control cap 87 is rotated along the L-shaped limit groove 842, which drives the transmission rod 851 to rotate.

[0073] In addition to serving as a guide, the L-shaped limit groove 842 can also lock the control block 873 and limit the rotation angle of the transmission rod 851. Combined with the mark set on the end cover 12 or the fastening rod 84, it is helpful for the operator to distinguish whether the sealing column 852 blocks the connecting hole 841.

[0074] Among them, such as Figure 13 and Figure 14 As shown, the inflation and deflation assembly 85 includes a transmission rod 851 that is provided through the fastening rod 84 and is rotatably connected to the fastening rod 84, an elastic support frame that is provided in the cavity and corresponds to the communicating hole 841, and an extrusion groove wheel 855 provided in the elastic support frame. The extrusion groove wheel 855 is sleeved and fixed to the outside of the fastening rod 84. The elastic support frame is composed of four elastic members 854 distributed in a rectangular shape and a rigid portion 853 that supports the elastic members 854. The rigid portion 853 is used to connect to the fastening rod 84. A sealing column 852 that can block the communicating hole 841 is provided through the elastic member 854. One end of the sealing column 852 is provided with a truncated cone-shaped mating portion that can cooperate with the extrusion groove wheel 855.

[0075] The fastening rod 84 is slidably connected to the clamping tube 871 , and a clamping joint 88 that cooperates with the clamping hole 872 is installed at one end of the fastening rod 84 located outside the cavity.

[0076] The extrusion groove wheel 855 is driven by the transmission rod 851 to rotate a certain angle. With the help of the conical matching part that can cooperate with the extrusion groove wheel 855, the extrusion groove wheel 855 can push the sealing column 852 to insert into the connecting hole 841, and the elastic part 854 is deformed. When the gas in the sealing airbag 833 needs to be released, the control cap 87 is rotated in the opposite direction, and the sealing column 852 returns to its original position with the help of the elastic force of the elastic part 854. At this time, the gas in the sealing airbag 833 can enter the cavity through the air path 823 and finally be discharged from the connecting pipe 844.

[0077] Among them, such as Figure 15 and Figure 16 As shown, the cyclone sand removal cylinder 2 consists of a cylindrical cylinder connected to the bottom of the filter cylinder 1 and an inverted conical shell welded to the bottom of the cylindrical cylinder. The top of the cylindrical cylinder is provided with an inwardly protruding annular inner lining 23 for installing the sand core tray filter 6. The middle part of the cylindrical cylinder is provided with a tangential water inlet pipe 21 for increasing the rotation effect of the water flow. One end of the tangential water inlet pipe 21 is connected to a water inlet electric valve, and an equipment bracket is welded and fixed to the outside of the conical shell. The sand storage cylinder 22, the micro-weight transmitter 252, and the sewage pipe 25 connected to the sewage solenoid valve together constitute a sewage storage and discharge assembly; the tangential water inlet pipe 21 is connected to the cylindrical cylinder in a tangential installation manner to increase the rotation effect of the water flow; solid-liquid separation is achieved through the lower conical shell, and high-density suspended matter sinks into the bottom sand storage cylinder 22.

[0078] The water entering the cyclone sand removal cylinder 2 tangentially generates a swirl. Under the combined action of centrifugal force, centripetal force, buoyancy and fluid drag, the rotating water flow causes low-density water and air to rise, while high-density suspended particles sink along the conical shell into the sand storage cylinder 22 at the bottom of the equipment. High-density suspended particles sink into the bottom sand storage cylinder 22. The accumulated weight of the high-density particles in the upper part of the cylinder is sensed and transmitted by the micro-weight transmitter 252. When the weight reaches the set value, the controller in the measurement and control electrical box opens the sewage solenoid valve to discharge sewage, completing the first-level cyclone sand removal process.

[0079] Among them, such as Figure 1 and Figure 15 As shown, a radial water outlet pipe 11 is provided on the upper part of the filter cylinder 1, and one end of the radial water outlet pipe 11 is connected to a water outlet electric valve. The clean water passing through the metal sintered mesh filter element 10 enters the subsequent use equipment through the radial water outlet pipe 11 to complete the three-stage fine filtration.

[0080] Among them, such as Figure 17 and Figure 18As shown, one end of the drain pipe 25 is connected to a drain solenoid valve, and the other end of the drain pipe 25 is provided with an annular mounting seat 251 for mounting a micro-weight transmitter 252. The top of the annular mounting seat 251 is provided with two annular ridges from the outside to the inside, and the top of the inner annular ridge is provided with a positioning column 253, and the micro-weight transmitter 252 is arranged between the two annular ridges. The micro-weight transmitter 252 is supported by the annular mounting seat 251, and the annular mounting seat 251 is connected to the sand storage cylinder 22 by screws, so that the installation of the drain pipe 25 can be completed.

[0081] In this embodiment, an annular support plate 254 is installed on the top of the annular mounting seat 251, which contacts the detection end of the micro-weight transmitter 252. A positioning hole 255 is provided at the bottom of the annular support plate 254 to be plugged into the positioning pin 253. Through the plug-in cooperation between the positioning pin 253 and the positioning hole 255, the annular support plate 254 can be quickly assembled on the annular mounting seat 251. The set annular support plate 254 can separate the micro-weight transmitter 252 and the sediment, thereby avoiding the reduction in the service life of the micro-weight transmitter 252 due to direct contact between the sediment and the micro-weight transmitter 252.

[0082] Among them, such as Figure 1 As shown, an exhaust port and a high-pressure air inlet are provided on the top of the end cover 12. One end of the exhaust port is connected to an exhaust solenoid valve, and one end of the high-pressure air inlet is connected to an air inlet solenoid valve. The gas rising to the bottom of the end cover 12 is discharged through the exhaust port.

[0083] During operation, the water inlet electric valve is opened, and water flows into the cyclone sand removal cylinder 2 through the tangential water inlet pipe 21, and swirls in the water entering the cyclone sand removal cylinder 2. Under the combined action of centrifugal force, centripetal force, buoyancy and fluid drag, the rotating water flow causes low-density water and air to rise, and high-density suspended particles to sink along the conical shell into the sand storage cylinder 22 at the bottom of the equipment. High-density suspended particles sink into the bottom sand storage cylinder 22, and the accumulated weight of high-density particles in the upper part of the cylinder is sensed and transmitted by the micro-weight transmitter 252. When the weight reaches the set value, the controller in the measurement and control electrical box opens the sewage solenoid valve to discharge sewage, completing the first-level cyclone sand removal process;

[0084] The rising water passes through the sand core tray filter 6 and enters the filter sand layer 4. The water and gas separated by the cyclone sand removal penetrate through the pore channels of the filter sand layer 4. Most of the suspended particles and large-sized colloids are blocked and intercepted by the pore channels. The purer water continues to rise, completing the secondary filtration.

[0085] After the cyclone sand removal and sand core filtration, the water body meets the sponge colloid cleaning ball 5 and enters each metal sintered mesh filter element 10 together. Under the action of pressure, the water body passes through the filter mesh and flows into the radial outlet pipe 11 for use by subsequent equipment. In this process, the sponge colloid cleaning ball 5 performs Brownian motion in the inner cavity of the filter element to prevent the filtered matter from adhering to the inner wall of the filter element. When the system flow rate decreases and the fluid rising force becomes smaller to a certain extent, the filtered matter sinks to the middle filter sand layer 4. During the backwash process, it is blown into the lower sand storage cylinder 22 and discharged through the sewage pipe 25, realizing the water treatment cycle process;

[0086] After a certain period of sand removal and filtration, the pore channels of the filter sand layer 4 increase in water resistance due to the interception of suspended matter, and the permeability of the metal sintered mesh filter element 10 deteriorates due to the attachment of small-sized particles and colloids. The inlet and outlet water pressure difference increases to the set pressure difference value of the differential pressure transmitter 3 installed at the water outlet. The differential pressure transmitter 3 sends a control signal through the measurement and control electrical box to close the inlet and outlet electric valves and the exhaust solenoid valve, open the bottom sewage outlet solenoid valve and the top high-pressure air inlet solenoid valve, and open the high-pressure gas in the external high-pressure gas storage tank into the device housing to start backwashing. The attachments on the inner wall of the metal sintered mesh filter element 10 fall off and enter the metal sintered mesh filter element 10. Under the action of high-pressure airflow and gravity, the metal sintered mesh filter element 10 is strongly disturbed, and the pore channels are vigorously reorganized under the blowing of the high-pressure airflow. The attachments that fall off from the upper part and the particles and colloids in the original pore channels fall off and sink to the bottom, and are discharged through the sand storage tank 22 and the sewage outlet, completing the equipment backwashing and then entering the water treatment process.

[0087] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An integrated device for desanding, filtration and purification of geothermal water, characterized in that: include: A filter cylinder (1), wherein an end cap (12) is provided on the top of the filter cylinder (1), and a filter unit is provided inside the filter cylinder (1), wherein the filter unit is composed of a filter sand layer (4), a plurality of sponge colloid cleaning balls (5) laid on the top of the filter sand layer (4), at least four metal sintered mesh filter elements (10), a compression spring (9), and a support structure for supporting the metal sintered mesh filter element (10), wherein the support structure is a support member 1 (7) or a support member 2 (8), and the support structure Component 2 (8) is composed of a filter element support tray 2 (81) provided at the bottom of the metal sintered mesh filter element (10), a filter element pressing plate 2 (82) provided at the top of the metal sintered mesh filter element (10), a fastening assembly, a gas charging and discharging assembly (85), and a plurality of sealing assemblies (83). A fastening hole 2 is provided on each of the filter element support tray 2 (81) and the filter element pressing plate 2 (82). At least four gas paths (823) communicating with the fastening hole 2 are provided in each of the filter element support tray 2 (81) and the filter element pressing plate 2 (82); The fastening assembly comprises a fastening rod (84) and a control cap (87) that penetrates the end cover (12); a cavity is provided inside the fastening rod (84); and two groups of communication holes (841) that can be connected to the air path (823) are provided outside the cavity. The inflation and deflation assembly (85) includes a transmission rod (851) that is provided through the fastening rod (84) and is rotatably connected to the fastening rod (84), an elastic support frame that is provided in the cavity and corresponds to the communication hole (841), and an extrusion groove wheel (855) provided in the elastic support frame, wherein the extrusion groove wheel (855) is sleeved and fixed to the outside of the fastening rod (84), the elastic support frame is composed of four elastic members (854) distributed in a rectangular shape and a rigid part (853) that supports the elastic members (854), and the rigid part (853) is used to be connected to the fastening rod (84), and a sealing column (852) that can block the communication hole (841) is provided through the elastic member (854), and one end of the sealing column (852) is provided with a truncated cone-shaped matching part that can match with the extrusion groove wheel (855); A cyclone sand removal cylinder (2) is provided at the bottom of the filter cylinder (1); a sand core tray filter (6) for supporting the filter sand layer (4) is provided at the top of the cyclone sand removal cylinder (2); a sand storage cylinder (22) is provided below the cyclone sand removal cylinder (2); the top of the sand storage cylinder (22) is connected to the cyclone sand removal cylinder (2) via a sedimentation pipe (24); and a sewage discharge pipe (25) is provided at the bottom of the sand storage cylinder (22); A micro weight transmitter (252) for sensing a change in the weight of sediment in the sand storage cylinder (22) and transmitting a weight signal, and a differential pressure transmitter (3) for detecting a pressure difference between an inlet and an outlet; A measurement and control electrical box electrically connected to the micro-weight transmitter (252) and the differential pressure transmitter (3) can control the opening and closing of the valve by receiving a detection signal.

2. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: The supporting member (7) comprises a filter element fastening rod (75) welded and fixed to the bottom of the end cover (12), a filter element support tray (71) provided at the bottom of the metal sintered mesh filter element (10), and a filter element pressing plate (73) provided at the top of the metal sintered mesh filter element (10). The filter element support tray (71) and the filter element pressing plate (73) are both provided with a fastening hole (74) capable of allowing the filter element fastening rod (75) to pass through. The top of the filter element support tray (71) and the bottom of the filter element pressing plate (73) are both There are at least four annular positioning protrusions (76) for positioning the metal sintered mesh filter element (10), and the filter element support tray (71) is provided with a water hole (77) corresponding to the annular positioning protrusion (76), so that the sponge colloid cleaning ball (5) can enter the metal sintered mesh filter element (10) under the action of the rising force of the water body and perform Brownian motion. The bottom of the filter element support tray (71) is provided with a fastening nut (72) screwed to the filter element fastening rod (75) for fastening the filter element support tray (71); The compression spring (9) is sleeved outside the filter element fastening rod (75) and is located between the end cover (12) and the filter element compression plate 1 (73).

3. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: The top of the filter element support tray (81) and the bottom of the filter element pressing plate (82) are both provided with at least four annular positioning protrusions (821) for positioning the metal sintered mesh filter element (10). A plurality of mounting holes (822) are also provided on one side of the annular positioning protrusion (821), one of which is connected to the air path (823). In addition, a water hole (821) corresponding to the annular positioning protrusion (821) is provided on the filter element support tray (81), so that the sponge colloid cleaning ball (5) can enter the metal sintered mesh filter element (10) under the action of the rising force of the water body and perform Brownian motion; The sealing assembly (83) includes an annular support body (831) mounted on one side of the annular positioning protrusion (821), a sealing airbag (833) is provided in the mounting ring groove of the annular support body (831) to prevent water from being discharged from the gap between the annular positioning protrusion (821) and the metal sintered mesh filter element (10), and a mounting post (832) for plugging into the mounting hole (822) is provided on one side of the annular support body (831), an air hole communicating with the sealing airbag (833) is opened on one of the mounting posts (832), and the air hole is connected to the air path (823) through one of the mounting holes (822).

4. The integrated device for desanding, filtration and purification of geothermal water according to claim 3, characterized in that: One end of the fastening rod (84) is provided with an outwardly protruding annular limiting protrusion (843), and an L-shaped limiting groove (842) is further provided on the outer wall of one end of the fastening rod (84). A connecting pipe (844) communicating with the cavity is further provided between the annular limiting protrusion (843) and the L-shaped limiting groove (842). One end of the connecting pipe (844) is connected to the inflation and deflation equipment through a pipeline, and a control block (873) is provided on the inner wall of the open end of the control cap (87) and is slidably matched with the L-shaped limiting groove (842). A clamping cylinder (871) is provided on the inner side of the control cap (87), and a clamping hole (872) is provided at the closed end of the clamping cylinder (871). The bottom of the filter element support tray 2 (81) and the end cover (12) are both provided with a fastening nut 2 (86) threadedly connected to the fastening rod (84) for fixing the filter element support tray 2 (81) and the fastening rod (84), and the compression spring (9) is sleeved outside the fastening rod (84) and located between the end cover (12) and the filter element compression plate 2 (82).

5. The integrated device for desanding, filtration and purification of geothermal water according to claim 4, characterized in that: The fastening rod (84) is slidably connected to the clamping cylinder (871), and a clamping joint (88) that cooperates with the clamping hole (872) is installed at one end of the fastening rod (84) located outside the cavity.

6. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: The cyclone sand removal cylinder (2) is composed of a cylindrical cylinder connected to the bottom of the filter cylinder (1) and an inverted conical shell welded to the bottom of the cylindrical cylinder. The top of the cylindrical cylinder is provided with an inwardly protruding annular inner lining (23) for mounting a sand core tray filter (6). The middle part of the cylindrical cylinder is provided with a tangential water inlet pipe (21) for increasing the rotation effect of the water flow. One end of the tangential water inlet pipe (21) is connected to a water inlet electric valve, and an equipment bracket is welded and fixed to the outside of the conical shell.

7. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: A radial water outlet pipe (11) is provided on the upper portion of the filter cylinder (1), and one end of the radial water outlet pipe (11) is connected to a water outlet electric valve.

8. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: One end of the sewage pipe (25) is connected to a sewage discharge solenoid valve, and the other end of the sewage pipe (25) is provided with an annular mounting seat (251) for mounting a micro-weight transmitter (252), the top of the annular mounting seat (251) is provided with two annular ridges from the outside to the inside, the top of the inner annular ridge is provided with a positioning column (253), and the micro-weight transmitter (252) is arranged between the two annular ridges.

9. The integrated device for desanding, filtration and purification of geothermal water according to claim 8, characterized in that: An annular support plate (254) in contact with the detection end of the micro-weight transmitter (252) is installed on the top of the annular mounting seat (251), and a positioning socket (255) connected to the positioning pin (253) is provided at the bottom of the annular support plate (254).

10. The integrated device for desanding, filtration and purification of geothermal water according to claim 1, characterized in that: An exhaust port and a high-pressure air inlet are provided on the top of the end cover (12); one end of the exhaust port is connected to an exhaust solenoid valve, and one end of the high-pressure air inlet is connected to an air inlet solenoid valve.

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