Geothermal water desanding, filtering and purifying integrated device

Abstract

The invention discloses a geothermal water desanding, filtering and purifying integrated device, and relates to the field of geothermal water purifying devices.The geothermal water desanding, filtering and purifying integrated device comprises a filtering barrel, an end cover is arranged at the top of the filtering barrel, and a filtering unit is arranged in the filtering barrel; each filtering unit is composed of a filtering sand layer, a plurality of sponge colloid cleaning balls laid on the top of the filtering sand layer, at least four metal sintering net filter elements, a pressure spring and a supporting structure used for supporting the metal sintering net filter elements, and the supporting structure is a first supporting component or a second supporting component; a cyclone desanding cylinder; the invention provides a set of integrated device for desanding, filtering and purifying geothermal water, which is simpler, more efficient, safer and more economical, and overcomes the limitations of large installation occupied space, high equipment manufacturing cost, large on-way pressure loss and large colloid permeation probability of common equipment adopting a grading distributed installation desanding, filtering and purifying mode; the purposes of getting rid of installation space limitation, reducing on-way pressure loss in the purification process and achieving more thorough purification are achieved.

Description

Technical Field

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

[0002] Geothermal well water and mine water mostly contain suspended particles, colloids, and other turbidity substances with different particle sizes. Currently, the purification treatment of geothermal well water for geothermal heating (including the recycling of mine water in industrial and mining enterprises) basically adopts a hierarchical and decentralized installation of equipment for sand removal and filtration, such as primary cyclone sand removal, secondary primary filtration, and tertiary fine filtration. The working principle is that after the raw water separates large-particle-size suspended substances through a primary filter screen or cyclone sand removal, it is transported through a pipeline to the secondary primary filter. After filtering out larger-particle-size suspended substances in the secondary filter, it is then transported through a pipeline to the tertiary fine filter, where small-particle-size suspended particles and some large-particle-size colloid substances are filtered out before being put into use.

[0003] The hierarchical and decentralized installation of sand removal and filtration methods, because each level of equipment is separately complete, the equipment cost is high, resulting in poor economic performance in use, the installation occupies a large space, resulting in low applicability, and the series connection of each level of equipment through pipelines increases the water resistance along the water treatment process, resulting in an increase in the pump head and an increase in power consumption. Due to the lack of filtration through the sand core pore channels throughout the process, the risk of colloid penetration in the raw water increases, resulting in an increase in the probability of blockage of the pore channels of the recharge well aquifer and other risks. Summary of the Invention

[0004] To solve the defects existing in the prior art, the present invention provides an integrated device for sand removal, filtration, and purification of geothermal water.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: An integrated device for sand removal, filtration, and purification of geothermal water according to the present invention includes a filtration cylinder body, a end cover is provided at the top of the filtration cylinder body, a filtration unit is provided inside the filtration cylinder body, the filtration unit is composed of a filtration sand layer, a number of sponge colloid cleaning balls laid on the top of the filtration 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, and the support structure is support member one or support member two; A cyclone sand removal cylinder body provided at the bottom of the filtration cylinder body, a sand core tray filter screen for supporting the filtration sand layer is provided at the top of the cyclone sand removal cylinder body, a sand storage cylinder is provided below the cyclone sand removal cylinder body, the top of the sand storage cylinder is connected to the cyclone sand removal cylinder body through a sedimentation pipe, and a sewage discharge pipe is provided at the bottom of the sand storage cylinder; A micro weight transmitter for sensing the change in the weight of the sediment in the sand storage cylinder and transmitting a weight signal, and a differential pressure transmitter for detecting the differential pressure between the inlet and outlet; The measurement and control electrical box electrically connected to the micro weight transmitter and the differential pressure transmitter can control the opening and closing of the valve by receiving the detection signal.

[0006] As a preferred technical solution of the present invention, the first support member includes a filter element fastening rod welded and fixed to the bottom of the end cover, a first filter element supporting tray provided at the bottom of the metal sintered mesh filter element, and a first filter element pressing disc provided at the top of the metal sintered mesh filter element. The first filter element supporting tray and the first filter element pressing disc are both provided with a first fastening hole through which the filter element fastening rod can pass. At least four first annular positioning protrusions for positioning the metal sintered mesh filter element are provided on the top of the first filter element supporting tray and the bottom of the first filter element pressing disc. And a first water passing hole corresponding to the first annular positioning protrusion is provided on the first filter element supporting tray, which can enable the sponge gum cleaning ball to enter the metal sintered mesh filter element under the action of the water rising force to perform Brownian motion. A first fastening nut screwed with the filter element fastening rod is provided at the bottom of the first filter element supporting tray for fastening the first filter element supporting tray; The compression spring is sleeved outside the filter element fastening rod and is located between the end cover and the first filter element pressing disc.

[0007] As a preferred technical solution of the present invention, the second support member is composed of a second filter element supporting tray provided at the bottom of the metal sintered mesh filter element, a second filter element pressing disc provided at the top of the metal sintered mesh filter element, a fastening assembly, a gas charging and discharging assembly, and a plurality of sealing assemblies. The second filter element supporting tray and the second filter element pressing disc are both provided with a second fastening hole. At least four gas paths communicating with the second fastening hole are provided in the second filter element supporting tray and the second filter element pressing disc. At least four second annular positioning protrusions for positioning the metal sintered mesh filter element are provided on the top of the second filter element supporting tray and the bottom of the second filter element pressing disc. A plurality of mounting holes are further provided on one side of the second annular positioning protrusion, and one of the mounting holes is communicated with the gas path. And a second water passing hole corresponding to the second annular positioning protrusion is provided on the second filter element supporting tray, which can enable the sponge gum cleaning ball to enter the metal sintered mesh filter element under the action of the water rising force to perform Brownian motion; The sealing assembly includes an annular support body mounted on one side of the second annular positioning protrusion. A sealing airbag for preventing water from discharging from the gap between the second annular positioning protrusion and the metal sintered mesh filter element is provided in the mounting ring groove of the annular support body. An installation column for inserting into the mounting hole is provided on one side of the annular support body. An air hole communicated with the sealing airbag is provided on one of the installation columns, and the air hole is communicated with the gas path through one of the mounting holes.

[0008] As a preferred technical solution of the present invention, the fastening assembly includes a fastening rod penetrating through the end cover and a control cap. A cavity is provided inside the fastening rod, and two communication holes capable of being connected to the air path are communicated outside the cavity. One end of the fastening rod is provided with an outwardly protruding annular limiting protrusion, and an L-shaped limiting groove is also formed on the outer wall of one end of the fastening rod. A connecting pipe communicating with 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 air charging and discharging device through a pipeline, and a control block slidably matched 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 inside the control cap, and a clamping hole is formed in the closed end of the clamping cylinder; Both the filter element support tray two and the bottom of the end cover are provided with fastening nuts two screwed to the fastening rod for fixing the filter element support tray two and the fastening rod, and the compression spring is sleeved outside the fastening rod and located between the end cover and the filter element pressing disc two.

[0009] As a preferred technical solution of the present invention, the air charging and discharging assembly includes a transmission rod penetrating through the fastening rod and rotatably connected to the fastening rod, an elastic support frame arranged in the cavity and corresponding to the communication holes, and an extrusion grooved wheel arranged in the elastic support frame. The extrusion grooved wheel is sleeved and fixed outside the fastening rod. The elastic support frame is composed of four elastic members distributed in a rectangular shape and a rigid part for supporting the elastic members. The rigid part is used for connecting with the fastening rod. A sealing column capable of blocking the communication hole is penetrated through the elastic member, and a frustum-shaped matching part capable of cooperating with the extrusion grooved wheel is provided at one end of the sealing column; The fastening rod is slidably connected with the clamping cylinder, and a clamping head matched with the clamping hole is installed at one end of the fastening rod outside the cavity.

[0010] As a preferred technical solution of the present invention, the cyclone desanding cylinder body is composed of a cylindrical cylinder connected to the bottom of the filter cylinder and an inverted conical shell welded to the bottom of the cylindrical cylinder. An inwardly protruding annular inner lining is provided at the top of the cylindrical cylinder for installing the sand core tray filter screen. A tangential water inlet pipe for increasing the rotation effect of the water flow is provided in the middle part of the cylindrical cylinder. One end of the tangential water inlet pipe is connected with a water inlet electric valve, and an equipment support is welded and fixed outside the conical shell.

[0011] As a preferred technical solution of the present invention, a radial water outlet pipe is arranged at the upper part of the filter cylinder, and one end of the radial water outlet pipe is connected with a water outlet electric valve.

[0012] As a preferred technical solution of the present invention, one end of the sewage pipe is connected with 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 outside to inside. A positioning plug post is provided on the top of the inner annular ridge, and the micro weight transmitter is arranged between the two annular ridges.

[0013] As a preferred technical solution of the present invention, a ring-shaped supporting plate in contact with the detection end of the micro-weight transmitter is installed on the top of the ring-shaped mounting seat, and positioning jacks inserted with the positioning plug posts are opened at the bottom of the ring-shaped supporting plate.

[0014] 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 with an exhaust solenoid valve, and one end of the high-pressure air inlet is connected with an intake solenoid valve.

[0015] The beneficial effects of the present invention are as follows: 1. For the integrated device for sand removal, filtration and purification of geothermal water, the integrated design makes the equipment more compact, realizes the innovation of the equipment structure, can be widely applied to the water treatment and filtration systems of various industries, and the equipment cost is lower.

[0016] 2. For the integrated device for sand removal, filtration and purification of geothermal water, the one-piece module design reduces the installation space of the water treatment equipment and the consumption of pipe valves and pipe fittings, can operate for a long time, and is more economical to use.

[0017] 3. For the integrated device for sand removal, filtration and purification of geothermal water, by reducing the overall pressure loss along the water treatment process, the pump consumption is reduced, and the equipment is more energy-saving.

[0018] 4. For the integrated device for sand removal, filtration and purification of geothermal water, a sand core filter layer with a certain thickness is used to simulate the water-containing pore channels of the geothermal reservoir, most of the water-soluble colloids are intercepted, and the filtration is more thorough; better water quality helps to reduce the internal wear of the water-using equipment at the later stage of the system and extend the service life of the equipment; effectively prevent the clogging of the geothermal reservoir aquifer, facilitate the tail water recharge, and the equipment and facilities operate more efficiently.

[0019] 5. For the integrated device for sand removal, filtration and purification of geothermal water, the segmented design is simple to manufacture, easy to disassemble and assemble, and the use and maintenance of the geothermal water during the whole process are more convenient.

[0020] 6. For the integrated device for sand removal, filtration and purification of geothermal water, the fixation of the metal sintered mesh filter element is completed through the compression spring and the supporting member one composed of the filter element support tray one, the filter element compression disc one and the filter element fastening rod on the end cover, and the structure is simple and the cost is low.

[0021] 7. For the integrated device for sand removal, filtration and purification of geothermal water, through the compression spring and the supporting member two, not only can the fixation of the metal sintered mesh filter element be completed, but also the sealing can be carried out through the sealing airbag that contacts the inner wall of the metal sintered mesh filter element after inflation, avoiding the water that has not been filtered by the metal sintered mesh filter element from flowing out from the gap between the annular positioning protrusion two and the metal sintered mesh filter element, so as to improve the filtration effect.

[0022] 8. The integrated device for sand removal, filtration and purification of geothermal water drives the extrusion grooved pulley to rotate a certain angle through a transmission rod, and by means of a frustum-shaped mating part that can cooperate with the extrusion grooved pulley and an elastic member, it is possible to select whether to block the communication hole with a sealing column, so as to be able to control the inflation and deflation of multiple sealing air bags simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 2 is a schematic diagram of the water flow direction of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 3 is a schematic diagram of the internal structure of the filter cylinder of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 4 is a schematic diagram of the connection structure of the end cover, the first support member, the compression spring and the metal sintered mesh filter element of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 5 is a schematic diagram of the first support member, the compression spring and the metal sintered mesh filter element of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 6 is a schematic diagram of the connection structure of the end cover, the second support member, the compression spring and the metal sintered mesh filter element of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 7 is a schematic diagram of the second support member of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 8 is a schematic diagram of the sealing assembly of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 9 is a three-dimensional sectional view of the second filter element pressing disc of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 10 is a schematic diagram of the fastening assembly of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 11 is a schematic diagram of the fastening rod of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 12 is a schematic diagram of the control cap of an integrated device for sand removal, filtration and purification of geothermal water according to the present invention; Figure 13It is a schematic diagram of the internal structure of the fastening rod and the control cap of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention; Figure 14 It is a schematic diagram of the air charging and discharging assembly structure of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention; Figure 15 It is a schematic diagram of the cyclone sand removal cylinder and the sand core tray filter screen structure of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention; Figure 16 It is a schematic diagram of the cyclone sand removal cylinder and the sewage discharge pipe structure of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention; Figure 17 It is a schematic diagram of the sewage discharge pipe structure of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention; Figure 18 It is a schematic diagram of the annular support plate structure of an integrated device for removing sand, filtering and purifying geothermal water according to the present invention.

[0024] In the figure: 1. Filter cylinder; 11. Radial water outlet pipe; 12. End cover; 2. Cyclone sand removal cylinder; 21. Tangential water inlet pipe; 22. Sand storage cylinder; 23. Ring-shaped inner lining; 24. Precipitation pipe; 25. Sewage discharge pipe; 251. Ring-shaped 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 screen; 7. Support member one; 71. Filter element support tray one; 72. Fastening nut one; 73. Filter element pressing plate one; 74. Fastening hole one; 75. Filter element fastening rod; 76. Ring-shaped positioning protrusion one; 77. Water passing hole one; 8. Support member two; 81. Filter element support tray two; 82. Filter element pressing plate two; 821. Ring-shaped positioning protrusion two; 822. Mounting hole; 823. Air passage; 83. Sealing assembly; 831. Ring-shaped support body; 832. Mounting post; 833. Sealing airbag; 84. Fastening rod; 841. Communication hole; 842. L-shaped limiting groove; 843. Ring-shaped limiting protrusion; 844. Connecting pipe; 85. Air charging and discharging assembly; 851. Transmission rod; 852. Sealing column; 853. Rigid part; 854. Elastic part; 855. Extrusion grooved wheel; 86. Fastening nut two; 87. Control cap; 871. Clamping cylinder; 872. Clamping hole; 873. Control block; 88. Clamping head; 9. Compression spring; 10. Metal sintered mesh filter element. Specific embodiments

[0025] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0026] Example: As Figures 1-3, an integrated device for sand removal, filtration and purification of geothermal water according to the present invention, comprising a filtration cylinder body 1, with an end cover 12 provided at the top of the filtration cylinder body 1, and a filtration unit provided inside the filtration cylinder body 1. The filtration unit consists of a filtration sand layer 4, a number of sponge-gel cleaning balls 5 laid on top of the filtration 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 elements 10. The support structure is a support member one 7 or a support member two 8; A cyclone sand removal cylinder body 2 provided at the bottom of the filtration cylinder body 1. A sand core tray filter screen 6 for supporting the filtration sand layer 4 is provided at the top of the cyclone sand removal cylinder body 2. A sand storage cylinder 22 is provided below the cyclone sand removal cylinder body 2. The top of the sand storage cylinder 22 is connected to the cyclone sand removal cylinder body 2 through 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 the change in the weight of the sediment in the sand storage cylinder 22 and transmitting a weight signal, and a differential pressure transmitter 3 for detecting the differential pressure between the inlet and outlet; A measurement and control electrical box electrically connected to the micro weight transmitter 252 and the differential pressure transmitter 3. The measurement and control electrical box can control the opening and closing of the valve by receiving the detected signals.

[0027] In this embodiment, the sand core tray filter screen 6 is selected according to the purpose of being smaller than the selected quartz sand particle size, with a total flux not less than 60% of the inner diameter flux of the filtration cylinder body 1 and a mesh number not less than 30 meshes. The sand core tray filter screen 6 (not less than 30 meshes, and the mesh number of the filter screen is selected according to the purity of the water treatment target and the particle size of the overlying quartz sand used). A certain thickness of quartz sand selected according to the particle size specification of the suspended matter in the geothermal well effluent is laid on it to form the filtration sand layer 4. When the thickness of the filtration sand layer 4 is stable at the maximum treatment flow rate, the water flow passing through the sand core tray filter screen 6 at the lower part of the sand layer is slightly reorganized in the pore channels under the influence of hydraulic force, and the upper part is slightly disturbed and the degree of pore channel reorganization is low and meets the normal water penetration of the water body.

[0028] In this embodiment, the filtration sand layer 4 is laid with a certain thickness, and the irregular pore channels formed between the sand grains depend on the particle size of the sand grains. After the water body and gas separated by cyclone sand removal and passed through the sand core filter layer through the sand core tray filter screen 6, the particulate suspended matter and most of the colloids are retained in the pore channels, playing a role of permeation filtration; In this embodiment, the volume of the sponge-gel cleaning ball 5 after absorbing water and expanding is not greater than 50% of the total inner cavity volume of all the metal sintered mesh filter elements 10 (4 - 8 filter elements). The density of the sponge-gel cleaning ball 5 is close to that of water after swelling in water. Under the action of the buoyancy of the water body and the upward water dynamic force, it enters the metal sintered mesh filter element 10 to perform Brownian motion.

[0029] In this embodiment, the water pressure difference between the inlet and outlet is monitored in real time by the pressure difference 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, open the bottom sewage outlet solenoid valve and the top high-pressure air inlet solenoid valve, and the high-pressure gas in the external high-pressure gas storage tank enters the device shell to start backwashing. 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 upper attachments 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.

[0030] After the equipment backwash 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, opens the water inlet and outlet electric valves and the exhaust solenoid valve, and enters the normal water treatment process.

[0031] 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.

[0032] Among them, Figure 4 and Figure 5 As shown, the support 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 arranged at the bottom of the metal sintered mesh filter element 10, and a filter element pressing plate 73 arranged 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 accommodating 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 provided with 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 to perform Brownian motion, and the bottom of the filter element support tray 71 is provided with a fastening nut 72 threadedly connected to the filter element fastening rod 75 for fastening the filter element support tray 71; 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 supporting 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.

[0033] After the filter element support tray 1 (71), the metal sintered mesh filter element 10, the first filter element pressing disc 73, and the compression spring 9 are assembled with the filter element fastening rod 75 on the end cover 12, they are installed in the filter cylinder 1 where the filter sand layer 4 and the sponge rubber cleaning balls 5 have been laid. After using a set of bolts to fasten the end cover 12 and then connecting and fixing it to a part of the cyclone desanding cylinder 2, the equipment assembly is completed.

[0034] The metal sintered mesh filter element 10 (the filter mesh aperture is selected according to the target of water body treatment purity) is positioned by the first annular positioning protrusion 76 and is pressed and suspended under the end cover 12 by the compression spring 9. Water and gas in the metal sintered mesh filter element 10 pass through the filter mesh under pressure. Small particle-size suspended solids and colloids larger than the filtered target particle size are intercepted in the inner cavity of the metal sintered mesh filter element 10. Disturbed by the sponge rubber cleaning balls 5 making Brownian motion in the cavity, the probability of adhesion to the inner wall of the metal sintered mesh filter element 10 is reduced. When the flow rate in the cavity decreases and the upward water flow force decreases, they sink into the filter sand layer 4.

[0035] Among them, as Figures 6-9 shown, the second support member 8 is composed of a second filter element support tray 81 provided at the bottom of the metal sintered mesh filter element 10, a second filter element pressing disc 82 provided at the top of the metal sintered mesh filter element 10, a fastening assembly, a gas charging and discharging assembly 85, and several sealing assemblies 83. Both the second filter element support tray 81 and the second filter element pressing disc 82 are provided with second fastening holes. There are at least four gas paths 823 communicating with the second fastening holes in both the second filter element support tray 81 and the second filter element pressing disc 82. There are at least four annular positioning protrusions 821 for positioning the metal sintered mesh filter element 10 at the top of the second filter element support tray 81 and the bottom of the second filter element pressing disc 82. A plurality of mounting holes 822 are further provided on one side of the annular positioning protrusion 821. One of the mounting holes 822 is communicated with the gas path 823. The second filter element support tray 81 is provided with a second water passing hole corresponding to the annular positioning protrusion 821, which can enable the sponge rubber cleaning balls 5 to enter the metal sintered mesh filter element 10 to make Brownian motion under the action of the upward water flow force; The sealing assembly 83 includes an annular support body 831 installed on one side of the annular positioning protrusion 821. A sealing airbag 833 for preventing water from discharging from the gap between the annular positioning protrusion 821 and the metal sintered mesh filter element 10 is provided in the installation ring groove of the annular support body 831. An installation post 832 for inserting 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 provided on one of the installation posts 832. The air hole is communicated with the gas path 823 through one of the mounting holes 822. The provided air hole can make the gas entering the gas path 823 flow to the sealing airbag 833. The number of the second water passing holes is 4 to 8, and the number of filter elements used for the cylinder diameter specification is determined according to the single-unit treatment water volume.

[0036] The gas enters the sealing airbag 833 through the gas path 823, the mounting hole 822 and the air hole, causing the sealing airbag 833 to inflate and expand, making the sealing airbag 833 contact the inner wall of the sintered metal mesh filter element 10, thereby achieving sealing and preventing water that has not been filtered by the sintered metal mesh filter element 10 from flowing out through the gap between the annular positioning projection two 821 and the sintered metal mesh filter element 10, thus improving the filtering effect.

[0037] Among them, as Figures 10-13 shown, the fastening assembly includes a fastening rod 84 penetrating through the end cover 12 and a control cap 87. A cavity is provided inside the fastening rod 84, and two groups of communication holes 841 that can be connected to the gas path 823 are communicated outside the cavity. One end of the fastening rod 84 is provided with an outwardly protruding annular limiting projection 843. An L-shaped limiting groove 842 is also formed on the outer wall of one end of the fastening rod 84. A connecting pipe 844 communicating with the cavity is provided between the annular limiting projection 843 and the L-shaped limiting groove 842. One end of the connecting pipe 844 is connected to the air charging and discharging device through a pipeline. And a control block 873 that is slidably matched 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 inside the control cap 87, and a clamping hole 872 is formed at the closed end of the clamping cylinder 871; Both the filter element supporting plate two 81 and the bottom of the end cover 12 are provided with fastening nuts two 86 that are screwed to the fastening rod 84 for fixing the filter element supporting plate two 81 and the fastening rod 84. And the compression spring 9 is sleeved outside the fastening rod 84 and is located between the end cover 12 and the filter element pressing plate two 82. Through the cooperation of the annular limiting projection 843 and the fastening nut two 86 located below the end cover 12, the fastening rod 84 can be fixed on the end cover 12.

[0038] After the sealing airbag 833 is filled with gas, the control cap 87 is pulled upward. When the control block 873 moves upward along the L-shaped limiting groove 842 to the vertex, the clamping head 88 enters the clamping hole 872, and then the control cap 87 is rotated along the L-shaped limiting groove 842, which can drive the transmission rod 851 to rotate; The provided L-shaped limiting groove 842 not only plays a guiding role, but also can lock the control block 873 and limit the rotation angle of the transmission rod 851. Coupled with the marks provided on the end cover 12 or the fastening rod 84, it is beneficial for the operator to distinguish whether the sealing column 852 blocks the communication hole 841.

[0039] Among them, as Figure 13 and Figure 14As shown in the figure, the air charging and discharging assembly 85 includes a transmission rod 851 penetrating through and rotatably connected to the fastening rod 84, an elastic support frame disposed in the cavity and corresponding to the communication hole 841, and an extrusion grooved wheel 855 disposed in the elastic support frame. The extrusion grooved wheel 855 is sleeved and fixed outside the fastening rod 84. The elastic support frame is composed of four elastic members 854 distributed in a rectangle and a rigid part 853 for supporting the elastic members 854. The rigid part 853 is used to connect with the fastening rod 84. A sealing column 852 capable of blocking the communication hole 841 penetrates through the elastic member 854. One end of the sealing column 852 is provided with a frustum-shaped fitting part capable of cooperating with the extrusion grooved wheel 855. The fastening rod 84 is slidably connected to the clamping cylinder 871. A clamping head 88 cooperating with the clamping hole 872 is installed at one end of the fastening rod 84 outside the cavity.

[0040] By driving the extrusion grooved wheel 855 to rotate a certain angle through the transmission rod 851, with the help of the frustum-shaped fitting part capable of cooperating with the extrusion grooved wheel 855, the extrusion grooved wheel 855 can push the sealing column 852 into the communication hole 841, and the elastic member 854 deforms. When it is necessary to release the gas in the sealed airbag 833, the control cap 87 is rotated in the reverse direction, and the sealing column 852 returns to its original position by the elastic force of the elastic member 854. At this time, the gas in the sealed airbag 833 can enter the cavity through the gas path 823 and finally be discharged from the connecting pipe 844.

[0041] Among them, as Figure 15 and Figure 16 shown in the figure, the cyclone desanding cylinder body 2 is composed of a cylindrical cylinder connected to the bottom of the filter cylinder body 1 and an inverted conical shell welded to the bottom of the cylindrical cylinder. An annular inner lining 23 protruding inward is provided at the top of the cylindrical cylinder for installing the sand core tray filter screen 6. A tangential water inlet pipe 21 for increasing the rotational effect of the water flow is provided in the middle part of the cylindrical cylinder. One end of the tangential water inlet pipe 21 is connected with a water inlet electric valve, and an equipment support is welded and fixed outside the conical shell. The sand storage cylinder 22, the micro weight transmitter 252, and the sewage discharge pipe 25 connected with a sewage discharge solenoid valve together form a sewage storage and discharge assembly; the tangential water inlet pipe 21 is connected to the cylindrical cylinder in a tangential installation manner for increasing the rotational effect of the water flow; solid-liquid separation is realized through the lower conical shell, and the suspended matter with high density and large size sinks into the bottom sand storage cylinder 22.

[0042] The water body that tangentially enters the cyclone sand removal cylinder body 2 generates a swirl. Under the combined action of centrifugal force, centripetal force, buoyancy, and fluid drag force, the water and gas with low density rise, and the suspended particulate matter with high density sinks along the conical shell into the sand storage cylinder 22 at the bottom of the equipment. The suspended matter with high density and large size sinks into the bottom sand storage cylinder 22. The micro weight transmitter 252 senses and transmits the accumulated weight of the high-density particulate matter in the upper part of the cylinder. When the weight reaches the set value, the controller in the measurement and control electrical box opens the sewage discharge solenoid valve to discharge sewage, completing the primary cyclone sand removal treatment; Among them, as Figure 1 and Figure 15 shown, a radial water outlet pipe 11 is provided at the upper part of the filter cylinder body 1. One end of the radial water outlet pipe 11 is connected with a water outlet electric valve. The clean water body passing through the metal sintered mesh filter element 10 enters the subsequent equipment for use through the radial water outlet pipe 11, completing the three-stage fine filtration.

[0043] Among them, as Figure 17 and Figure 18 shown, one end of the sewage discharge pipe 25 is connected with a sewage discharge solenoid valve, and the other end of the sewage discharge pipe 25 is provided with an annular mounting seat 251 for installing the 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 plug 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 with the sand storage cylinder 22 by screws, so that the installation of the sewage discharge pipe 25 can be completed.

[0044] In this embodiment, an annular supporting plate 254 in contact with the detection end of the micro weight transmitter 252 is installed at the top of the annular mounting seat 251. A positioning socket 255 for inserting the positioning plug 253 is opened at the bottom of the annular supporting plate 254. Through the insertion fit of the positioning plug 253 and the positioning socket 255, the annular supporting plate 254 can be quickly assembled on the annular mounting seat 251. The arranged annular supporting plate 254 can separate the micro weight transmitter 252 from the sediment, thereby avoiding the reduction of the service life of the micro weight transmitter 252 caused by the direct contact between the sediment and the micro weight transmitter 252.

[0045] Among them, as Figure 1 shown, an exhaust port and a high-pressure air inlet are provided at the top of the end cover 12. One end of the exhaust port is connected with an exhaust solenoid valve, and one end of the high-pressure air inlet is connected with an air inlet solenoid valve. The gas rising to the lower part of the end cover 12 is discharged through the exhaust port.

[0046] 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 into the sand storage cylinder 22 at the bottom of the equipment along the conical shell, and high-density suspended particles to 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 setting value is reached, the controller in the measurement and control electrical box opens the sewage discharge solenoid valve to discharge sewage, completing the first-level cyclone sand removal process; 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-size colloids are blocked and intercepted by the pore channels. The purer water continues to rise, completing the secondary osmotic filtration. 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 decreases to a certain extent, the filtered matter sinks to the middle filter sand layer 4, and is blown to the lower sand storage cylinder 22 during the backwashing process and discharged through the sewage pipe 25, realizing the water treatment cycle process; After a certain period of sand removal and filtration, the porous channel of the filter sand layer 4 increases its permeation 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-size particles and colloids. The inlet and outlet water pressure difference increases to the set pressure difference value of the differential pressure transmitter 3 arranged at the 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 the high-pressure gas in the external high-pressure gas storage tank enters the device shell 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 porous channel is violently reorganized under the blowing of high-pressure airflow. The attachments on the upper part and the particles and colloids in the original porous channel fall off and sink to the bottom, and are discharged through the sand storage cylinder 22 and the sewage outlet. The equipment backwashing is completed and then enters the water treatment process.

[0047] Finally, it should be noted that the above are only 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated device for sand removal, filtration and purification of geothermal water, characterized in that, Comprising: A filter cylinder body (1), a end cover (12) is provided at the top of the filter cylinder body (1), a filter unit is provided inside the filter cylinder body (1), and the filter unit is composed of a filter sand layer (4), a number of sponge-gel 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 elements (10), and the support structure is a support member one (7) or a support member two (8); A cyclone desanding cylinder body (2) provided at the bottom of the filter cylinder body (1), a sand core tray filter screen (6) for supporting the filter sand layer (4) is provided at the top of the cyclone desanding cylinder body (2), a sand storage cylinder (22) is provided below the cyclone desanding cylinder body (2), the top of the sand storage cylinder (22) is connected to the cyclone desanding cylinder body (2) through 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 the change in the weight of the sediment in the sand storage cylinder (22) and transmitting a weight signal, and a differential pressure transmitter (3) for detecting the differential pressure between the inlet and outlet; A measurement and control electrical box electrically connected to the micro weight transmitter (252) and the differential pressure transmitter (3), and the measurement and control electrical box can control the opening and closing of the valve by receiving the detection signal.

2. The integrated device for integrated removal of sand, filtration and purification of geothermal water according to claim 1, characterized in that The support member one (7) includes a filter element fastening rod (75) welded and fixed to the bottom of the end cover (12), a filter element support tray one (71) provided at the bottom of the metal sintered mesh filter element (10), and a filter element compression disc one (73) provided at the top of the metal sintered mesh filter element (10). Fastening holes one (74) through which the filter element fastening rod (75) can pass are provided on both the filter element support tray one (71) and the filter element compression disc one (73). At least four annular positioning protrusions one (76) for positioning the metal sintered mesh filter element (10) are provided on the top of the filter element support tray one (71) and the bottom of the filter element compression disc one (73). And a water passing hole one (77) corresponding to the annular positioning protrusion one (76) is provided on the filter element support tray one (71), which can enable the sponge-gel cleaning ball (5) to enter the metal sintered mesh filter element (10) under the action of the water rising force to perform Brownian motion. A fastening nut one (72) screwed to the filter element fastening rod (75) is provided at the bottom of the filter element support tray one (71) for fastening the filter element support tray one (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 disc one (73).

3. An integrated device for sand removal, filtration and purification of geothermal water according to claim 1, characterized in that, The second support member (8) is composed of a second filter element support tray (81) provided at the bottom of the metal sintered mesh filter element (10), a second filter element pressing plate (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). Both the second filter element support tray (81) and the second filter element pressing plate (82) are provided with second fastening holes. At least four gas paths (823) communicating with the second fastening holes are provided inside both the second filter element support tray (81) and the second filter element pressing plate (82). At least four annular positioning protrusions two (821) for positioning the metal sintered mesh filter element (10) are provided at the top of the second filter element support tray (81) and the bottom of the second filter element pressing plate (82). A plurality of mounting holes (822) are also provided on one side of the annular positioning protrusion two (821). One of the mounting holes (822) is communicated with the gas path (823). A second water passing hole corresponding to the annular positioning protrusion two (821) is provided on the second filter element support tray (81), enabling the sponge rubber cleaning ball (5) to enter the metal sintered mesh filter element (10) to perform Brownian motion under the action of the water rising force; The sealing assembly (83) includes an annular support body (831) mounted on one side of the annular positioning protrusion two (821). A sealing airbag (833) for preventing water from discharging from the gap between the annular positioning protrusion two (821) and the metal sintered mesh filter element (10) is provided in the mounting ring groove of the annular support body (831). A mounting post (832) for inserting into the mounting hole (822) is provided on one side of the annular support body (831). An air hole communicated with the sealing airbag (833) is provided on one of the mounting posts (832). The air hole is communicated with the gas path (823) through one of the mounting holes (822).

4. An integrated device for sand removal, filtration and purification of geothermal water according to claim 3, characterized in that, The fastening assembly includes a fastening rod (84) penetrating through the end cover (12) and a control cap (87). A cavity is provided inside the fastening rod (84). Two groups of communication holes (841) capable of being connected to the gas path (823) are communicated outside the cavity. An annular limiting protrusion (843) protruding outward is provided at one end of the fastening rod (84). An L-shaped limiting groove (842) is also provided on the outer wall of one end of the fastening rod (84). A connecting pipe (844) communicated with the cavity is provided between the annular limiting protrusion (843) and the L-shaped limiting groove (842). One end of the connecting pipe (844) is connected to a gas charging and discharging device through a pipeline. And a control block (873) slidably matched 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 inside the control cap (87). A clamping hole (872) is provided at the closed end of the clamping cylinder (871); Second fastening nuts (86) screwed with the fastening rod (84) are provided at the bottoms of both the second filter element support tray (81) and the end cover (12) for fixing the second filter element support tray (81) and the fastening rod (84). And the compression spring (9) is sleeved outside the fastening rod (84) and is located between the end cover (12) and the second filter element pressing plate (82).

5. An integrated device for sand removal, filtration and purification of geothermal water according to claim 4, characterized in that, The air charging and discharging assembly (85) includes a transmission rod (851) that penetrates and is rotatably connected to the fastening rod (84), an elastic support frame disposed in the cavity and corresponding to the communication hole (841), and a pressing grooved wheel (855) disposed in the elastic support frame. The pressing grooved wheel (855) is sleeved and fixed outside the fastening rod (84). The elastic support frame is composed of four elastic members (854) distributed in a rectangle and a rigid part (853) that supports the elastic members (854). The rigid part (853) is used to connect with the fastening rod (84). A sealing column (852) that can block the communication hole (841) penetrates through the elastic member (854). One end of the sealing column (852) is provided with a frustum-shaped mating part that can cooperate with the pressing grooved wheel (855). The fastening rod (84) is slidably connected to the clamping cylinder (871). A clamping head (88) that cooperates with the clamping hole (872) is installed at one end of the fastening rod (84) outside the cavity.

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

7. An integrated device for geothermal water sand removal, filtration and purification according to claim 1, characterized in that, A radial water outlet pipe (11) is provided at the upper part of the filter cylinder body (1). One end of the radial water outlet pipe (11) is connected with a water outlet electric valve.

8. An integrated device for sand removal, filtration and purification of geothermal water according to claim 1, characterized in that, One end of the sewage discharge pipe (25) is connected with a sewage discharge solenoid valve. The other end of the sewage discharge pipe (25) is provided with an annular mounting seat (251) for installing a micro weight transmitter (252). Two annular ridges are provided on the top of the annular mounting seat (251) from outside to inside. A positioning plug post (253) is provided on the top of the inner annular ridge. The micro weight transmitter (252) is disposed between the two annular ridges.

9. An integrated device for geothermal water sand removal, filtration and purification according to claim 8, characterized in that, An annular supporting plate (254) that contacts the detection end of the micro weight transmitter (252) is installed on the top of the annular mounting seat (251). A positioning jack (255) for inserting the positioning plug post (253) is opened at the bottom of the annular supporting plate (254).

10. The integrated device for sand removal, 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 with an exhaust solenoid valve. One end of the high-pressure air inlet is connected with an air inlet solenoid valve.

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