Device for precisely filtering geothermal water

Abstract

The invention belongs to the technical field of geothermal water treatment, and particularly relates to a device for precisely filtering geothermal water, the device comprises a primary filtering assembly and a second filtering assembly, the primary filtering assembly comprises a water tank and a first filter element, the bottom end of the water tank is provided with a water outlet pipe, and the first filter element is cooperatively arranged on the inner wall of the water outlet pipe; the second filter assembly comprises a first barrel and a second filter element, the upper side of the first barrel extends to form a water inlet pipe, and the water inlet pipe and the water outlet pipe are detachably connected; a slag discharging opening is formed in the bottom side of the upper end of the first barrel, the water inlet pipe is located between the second filter element and the slag discharging opening, and a water outlet is formed in the bottom end of the first barrel; a spiral feeding mechanism is arranged in the first barrel body and is used for discharging filter residues in the first barrel body. According to the device, multi-stage filtering equipment can be integrally designed, synchronous maintenance and filter element replacement are facilitated, filter residues are discharged at a time, and the filtering efficiency and the residue discharging efficiency are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of geothermal water treatment, and in particular relates to a device for precise filtration of geothermal water. Background Art

[0002] The development and utilization of geothermal resources can promote green, low-carbon and circular development, help upgrade green industries, and provide clean energy guarantees for the transformation of new and old kinetic energy. One of the main tasks of geothermal resource development is to filter the mined geothermal water resources.

[0003] In the carbonate rock hydrogeological area of ​​low mountains and hills, the types of groundwater include loose rock pore water, clastic rock pore fissure water, carbonate rock fissure karst water, bedrock fissure water, etc. When geothermal water is extracted, it often carries a large amount of particulate impurities, which affects the water quality and easily leads to pipeline erosion and wear, poor heat exchange effect of heat exchanger, valve and instrument blockage, etc. At present, geothermal water filtration and separation devices rely on cyclone separators or filter cartridge filters to remove particles. Generally, multi-stage filtration devices are set up to filter particles of different particle sizes in sequence to improve the filtration effect.

[0004] At present, the geothermal water multi-stage filtration and separation device has the following problems: In a multi-stage filtration system, the multi-stage filtration devices are basically separated from each other and have no correlation. Therefore, in the later stage of maintenance and replacement of filter elements, they need to be carried out in sequence, which is inefficient; Secondly, multi-stage filtering devices need to periodically discharge the filter residue. The current filtering devices are not convenient for discharging the filtered material, which easily leads to blockage of various pipelines and filtering equipment. Especially in multi-stage filtering, it is necessary to discharge the residue from multiple devices separately, which is inefficient. Summary of the invention

[0005] In response to the technical problems existing in the background technology, the present invention provides a device for precision filtration of geothermal water, which can integrate the design of multi-stage filtration equipment to facilitate synchronous maintenance and replacement of filter elements, and realize the discharge of filter residues at one time, thereby maximizing the residue discharge efficiency.

[0006] To achieve the above purpose, the technical solution provided by the present invention is: A device for precision filtration of geothermal water, comprising a primary filter assembly and a second filter assembly, the primary filter assembly comprising a water tank and a first filter element, the bottom end of the water tank being provided with a water outlet pipe, the first filter element being cooperatively arranged on the inner wall of the water outlet pipe, and the water tank being provided with a lifting assembly for driving the first filter element to lift and lower; the second filter assembly comprising a first cylinder body and a second filter element, the upper side of the first cylinder body being provided with a water inlet pipe extending therefrom, the water inlet pipe and the water outlet pipe being detachably connected, and the first cylinder body being arranged at an incline; a slag discharge port being provided on the bottom side of the upper end of the first cylinder body, the second filter element being arranged inside the first cylinder body, the water inlet pipe being located between the second filter element and the slag discharge port, and a water outlet being provided at the bottom end of the first cylinder body; a spiral feeding mechanism being provided inside the first cylinder body, the spiral feeding mechanism being used to discharge the filter residue in the first cylinder body.

[0007] Optionally, the spiral feeding mechanism includes a second cylinder, a positioning cylinder, a motor, a cylinder, a rotating shaft and a spiral blade, the bottom end of the second cylinder is detachably connected to the upper end of the first cylinder, the second cylinder is provided with a hole one, a hole two and a hole three in sequence, the positioning cylinder is arranged on the inner wall of the hole two, the rotating shaft is rotatably arranged on the inner wall of the positioning cylinder, the outer wall of one end of the rotating shaft is provided with a spiral blade, the other end of the rotating shaft is provided with a limiting groove, the motor and the output shaft are connected for transmission, the outer wall of the output shaft is provided with a limiting protrusion, the output shaft is slidably arranged inside the rotating shaft, and the limiting protrusion is cooperatedly arranged in the limiting groove; the bottom end of the second cylinder is provided with a cylinder, the end of the piston rod of the cylinder is connected with a slider, the upper end of the slider is provided with a rotating joint, and the rotating joint is rotatably connected with the rotating shaft; the bottom end of the second cylinder is provided with a slide groove, and the slider is slidably arranged in the slide groove; the cylinder can drive the spiral blade to extend into the first cylinder or be received in the second cylinder.

[0008] Optionally, the outer wall of the positioning cylinder is provided with a first rack, and the side wall of the first rack is slidably arranged on the inner wall of the second hole; a transmission box is extended to the upper end of the second cylinder, and a double-groove pulley is rotatably arranged on the upper end of the transmission box, and a first pulley is arranged at the bottom end of the transmission box, and the first pulley and the double-groove pulley are connected by a first belt; a first gear is arranged on one side of the first pulley, and the first gear is meshed and connected with the first rack; an installation box is arranged at the upper end of the water tank, and the installation box includes two relatively arranged fixed plates and a connecting plate connected to the two fixed plates, one end of the connecting plate extends into the water tank, and a guide groove is arranged inside the connecting plate, and a second rack is slidably arranged in the guide groove; the lifting assembly includes a second gear and a second rack, a second pulley is rotatably arranged on the connecting plate, and the second pulley is connected to the double-groove pulley through a second belt, a second gear is arranged on one side of the second pulley, and the second gear is meshed and connected with the second rack, and a mounting shaft is arranged at the bottom end of the second rack, and the first filter element is detachably arranged at the bottom end of the mounting shaft.

[0009] Optionally, the diameter of the first pulley is smaller than the diameter of the double-groove pulley, and the diameter of the double-groove pulley is equal to the diameter of the second pulley.

[0010] Optionally, the bottom end of the cylinder is connected to the side wall of the slag discharge port by bolts, and an L-shaped positioning block is provided at the upper end of the cylinder. The positioning block is arranged close to the bottom wall of the chute, and the positioning block is connected to the bottom wall of the chute by bolts.

[0011] Optionally, a valve body is provided on the mounting shaft, and the valve body is provided on the upper part of the first filter element. When the first filter element is located inside the first cylinder, the valve body is tightly against the inner wall of the water outlet pipe to close the water outlet pipe.

[0012] Optionally, a plug-in port is provided in the middle of the second filter element, and the bottom end of the rotating shaft can extend into the plug-in port and be plugged into the second filter element.

[0013] Optionally, the second filter element includes an outer shell and a filter cartridge arranged in the outer shell, a plug-in interface is arranged in the middle of the outer shell, an annular groove is arranged on the outer wall of the plug-in interface, a spring is connected to the plug-in interface, one end of the spring is connected to a sealing ring, and the sealing ring slides closely against the inner wall of the plug-in interface; an elastically compressible clamping shaft is arranged at the bottom end of the rotating shaft, and the rotating shaft can squeeze the sealing ring so that the clamping shaft is clamped into the groove; a plurality of ejection screws are arranged on the outer wall of the outer shell, and the ejection screws are arranged opposite to the groove.

[0014] Optionally, a first rib plate is provided on one side of the transmission box, and a second rib plate is provided on one side of the water tank, and the first rib plate and the second rib plate are butt-jointed and connected by bolts.

[0015] The present invention has the following advantages and beneficial effects: The present invention provides a device for precision filtration of geothermal water. The geothermal water is filtered by a primary filter assembly and a second filter assembly in sequence. The geothermal water first enters the water tank and is filtered by the first filter element at the bottom. Then, it reaches the first cylinder and is filtered by the second filter element. The geothermal water is discharged after double-stage filtration. The residue filtered by the first filter element can make the first filter element descend to the inside of the first cylinder, and then be discharged into the first cylinder, and be discharged together with the residue filtered by the second filter element through a spiral feeding mechanism. With such a design, the multi-stage filtration device only needs one spiral feeding mechanism to discharge the residue online / periodically, thereby avoiding blockage of pipelines and filter elements, ensuring filtration efficiency, and improving residue discharge efficiency.

[0016] In the present invention, the multi-stage filtering equipment is integratedly designed, and the first filter element can be lowered into the first cylinder, that is, the first filter element and the second filter element can be conveniently repaired and replaced through the slag discharge port, so that the multi-stage filtering equipment can be repaired and replaced with a one-time filter element, which greatly improves the efficiency of later repair and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 One of the structural diagrams of the device for precise filtration of geothermal water provided by the present invention; Figure 2 The second structural diagram of the device for precise filtration of geothermal water provided by the present invention; Figure 3 A front view of a device for precise filtration of geothermal water provided by the present invention; Figure 4 A cross-sectional view of a device for precise filtration of geothermal water provided by the present invention; Figure 5 for Figure 4 A cross-sectional view of the first filter element descending into the first cylinder to discharge slag; Figure 6 for Figure 4 A cross-sectional view showing the first filter element being lowered and the second filter element being raised for inspection and replacement; Figure 7 for Figure 4 A partial enlarged view of point a in the middle; Figure 8 One of the transmission structure diagrams inside the device for precise filtration of geothermal water provided by the present invention; Fig. 9 for Figure 8 A partial enlarged view of point b in the middle; Fig.10 The second diagram of the transmission structure inside the device for precise filtration of geothermal water provided by the present invention; Fig.11 for Fig.10 A partial enlarged view of point c in the middle; Fig.12 for Fig.10 The local enlarged view at point d in the middle; Fig.13 A structural diagram of a water tank provided by the present invention; Fig.14 A cross-sectional view of a water tank provided by the present invention; Fig.15 A structural diagram of the first cylinder provided by the present invention; Fig.16 One of the structural diagrams of the second cylinder provided by the present invention; Fig.17 The second structural diagram of the second cylinder provided by the present invention; Fig.18 for Fig.16 Left view of Fig.19 for Fig.18 Sectional view along the AA direction; Fig. 20 A structural diagram of the positioning cylinder and the first rack provided by the present invention; Fig.21 A structural diagram of a first filter element provided by the present invention; Fig. 22 A structural diagram of a rotating shaft, spiral blades and a rotating joint provided by the present invention; Fig.23 A cross-sectional view of the rotating shaft provided by the present invention; Fig.24 A cross-sectional view of a second filter element provided by the present invention.

[0018] Icons: 1-water tank, 11-water outlet pipe, 111-first connecting flange, 12-water inlet joint, 13-second rib plate, 14-fixing plate, 141-axis hole one, 15-connecting plate, 16-guide groove, 2-first cylinder, 21-water inlet pipe, 22-slag discharge port, 23-water outlet, 24-second filter element, 241-housing, 242-filter cartridge, 243-slot, 244-spring one, 245-sealing ring, 246-ejection screw, 247-bellows, 25-second connecting flange, 26-third connecting flange, 3-second cylinder, 31-transmission box, 311-axis hole two, 312-axis hole three, 313-notch, 32-first rib plate, 33-slideway, 34-fourth connecting flange, 35-connecting flange hole, 36-hole one, 37-hole two, 38-hole three, 4-motor, 4 1-coupling, 42-output shaft, 421-limiting protrusion, 43-bearing, 431-fifth connecting flange, 5-cylinder, 51-piston rod, 52-slider, 53-rotating joint, 54-positioning block, 55-positioning hole, 6-positioning cylinder, 61-first rack, 62-blocking ring, 63-locking hole, 7-rotating shaft, 71-spiral blade, 72-limiting groove, 73-T-shaped hole, 74-top block , 75-spring two, 76-clamping shaft, 77-tightening screw, 8-second rack, 81-installing shaft, 82-valve body, 83-first filter element, 831-connecting cylinder, 832-inner hole, 9-first gear, 91-first pulley, 92-axis one, 93-first belt, 94-double-groove pulley, 95-axis two, 96-second pulley, 97-second gear, 98-axis three, 99-second belt. DETAILED DESCRIPTION

[0019] Example 1 like Figures 1 to 4 As shown, a device for precise filtration of geothermal water comprises a primary filtration assembly and a second filtration assembly, wherein the primary filtration assembly comprises a water tank 1 and a first filter element 83, a water outlet pipe 11 is arranged at the bottom end of the water tank 1, the first filter element 83 is arranged on the inner wall of the water outlet pipe 11, and a lifting assembly for driving the first filter element 83 to rise and fall is arranged on the water tank 1. The second filtration assembly comprises a first cylinder 2 and a second filter element 24, an inlet pipe 21 is extended and arranged on the upper side of the first cylinder 2, the inlet pipe 21 and the water outlet pipe 11 are detachably connected, the inlet pipe 21 and the water outlet pipe 11 have the same size specifications, and the first cylinder 2 is arranged obliquely; a slag discharge port 22 is arranged on the upper bottom side of the first cylinder 2, the second filter element 24 is arranged inside the first cylinder 2, the inlet pipe 21 is located between the second filter element 24 and the slag discharge port 22, and a water outlet 23 is arranged at the bottom end of the first cylinder 2; a spiral feeding mechanism is arranged inside the first cylinder 2, and the spiral feeding mechanism is used to discharge the filter residue in the first cylinder 2.

[0020] like Figure 1 , 13As shown in Figures 15 to 15, a first connecting flange 111 is provided at the bottom of the water outlet pipe 11, a second connecting flange 25 is provided at the upper end of the water inlet pipe 21, the first connecting flange 111 and the second connecting flange 25 are butt-jointed and connected by bolts, and a water inlet joint 12 is provided at the upper end of the water tank 1.

[0021] In the present invention, a first rib plate 32 is provided on one side of the transmission box 31, and a second rib plate 13 is provided on one side of the water tank 1. The first rib plate 32 and the second rib plate 13 are butt-jointed and connected by bolts to achieve a stable connection of the triangular structure of the first cylinder 2, the second cylinder 3 and the water tank 1.

[0022] In the present invention, geothermal water is filtered by the primary filter assembly and the second filter assembly in sequence. The geothermal water first enters the water tank 1 through the water inlet joint 12, and then is filtered by the first filter element 83 at the bottom, and then reaches the first cylinder 2, and is filtered by the second filter element 24, and is discharged from the water outlet 23 after double-stage filtration. The filter residue filtered by the first filter element 83 can make the first filter element 83 descend to the inside of the first cylinder 2, and then be discharged into the inside of the first cylinder 2, and be discharged together with the filter residue filtered by the second filter element 24 through the spiral feeding mechanism. With such a design, the multi-stage filtering device only needs one spiral feeding mechanism to perform the filter residue discharge work online / periodically, thereby avoiding the blockage of the pipeline and the filter element, ensuring the filtration efficiency, and improving the residue discharge efficiency.

[0023] In the present invention, the multi-stage filtering equipment is integratedly designed, and the first filter element 83 can be lowered into the first cylinder 2, that is, the first filter element 83 and the second filter element 24 can be conveniently repaired and replaced through the slag discharge port 22, so that the multi-stage filtering equipment can be repaired and replaced at one time, which greatly improves the efficiency of later repair and replacement.

[0024] Example 2 When the first filter element 83 descends to the inside of the first cylinder 2 to discharge slag or perform maintenance and replacement, in order to avoid collision and interference between the first filter element 83 and the spiral feeding mechanism when the first filter element 83 descends to the inside of the first cylinder 2, further optimization design is performed.

[0025] like Figures 1 to 19As shown, the spiral feeding mechanism includes a second cylinder 3, a positioning cylinder 6, a motor 4, a cylinder 5, a rotating shaft 7 and a spiral blade 71. The bottom end of the second cylinder 3 is detachably connected to the upper end of the first cylinder 2. Specifically, a third connecting flange 26 is provided at the upper end of the first cylinder 2, and a fourth connecting flange 34 is provided at the bottom end of the second cylinder 3. The third connecting flange 26 and the fourth connecting flange 34 are butted and connected by bolts. Hole 1 36, hole 2 37 and hole 38 are sequentially provided inside the second cylinder 3. The positioning cylinder 6 is provided on the inner wall of hole 2 37, and the rotating shaft 7 is rotatably provided on the inner wall of the positioning cylinder 6. Specifically, retaining rings 62 are closely provided at both ends of the positioning cylinder 6. A plurality of locking holes 63 are provided on the circumference of the retaining ring 62. The retaining ring 62 is fixed to the rotating shaft 7 by screwing screws into the locking holes 63. The positioning cylinder 6 is fixed by the retaining ring 62, so that the positioning cylinder 6 is rotatably sleeved on the outer wall of the rotating shaft 7. The outer wall of one end of the rotating shaft 7 is provided with a spiral blade 71, and the other end of the rotating shaft 7 is provided with a limiting groove 72. The motor 4 and the output shaft 42 are connected for transmission. The outer wall of the output shaft 42 is provided with a limiting protrusion 421. The output shaft 42 is slidably arranged inside the rotating shaft 7, and the limiting protrusion 421 is matched and arranged in the limiting groove 72, so that the telescopic limit of the output shaft 42 and the rotating shaft 7 is realized, and the two can rotate synchronously. Specifically, the motor 4 is fixed on the fifth connecting flange 431, and the bottom end of the fifth connecting flange 431 is integrally connected with the bearing 43, and the inner wall of the bearing 43 is provided with a coupling 41, and the output shaft 42 and the motor 4 are connected for transmission through the coupling 41. One end of the second cylinder 3 is provided with a plurality of connecting flange holes 35, and the fifth connecting flange 431 and the connecting flange hole 35 are aligned and connected by bolts.

[0026] like Figures 1 to 22 As shown, a cylinder 5 is provided at the bottom end of the second cylinder 3, a slider 52 is connected to the end of the piston rod 51 of the cylinder 5, a rotary joint 53 is provided at the upper end of the slider 52, and the rotary joint 53 is rotatably connected to the rotating shaft 7, that is, the rotating shaft 7 can rotate relative to the rotary joint 53, and the extension and contraction of the rotary joint 53 can drive the extension and contraction of the rotating shaft 7. A chute 33 is provided at the bottom end of the second cylinder 3, and the slider 52 is slidably arranged in the chute 33; the cylinder 5 can drive the spiral blade 71 to extend into the first cylinder 2 for slag discharge or be stored in the second cylinder 3 for easy inspection and replacement of the filter element.

[0027] Furthermore, the bottom end of the cylinder 5 is connected to the side wall of the slag discharge port 22 by bolts, and an L-shaped positioning block 54 is provided at the upper end of the cylinder 5, and a positioning hole 55 is provided on the positioning block 54. The positioning block 54 is arranged close to the bottom wall of the chute 33, and the positioning block 54 is connected to the bottom wall of the chute 33 by bolts. In this way, the connection and fixation of the cylinder 5 is easily achieved.

[0028] like Figure 4As shown, at this time, the first filter element 83 and the second filter element 24 are both in the filtering state, the spiral blade 71 is located inside the first cylinder 2, and the motor 4 drives the spiral blade 71 to rotate, continuously sending the filtered residue of the second filter element 24 upward and discharged through the residue discharge port 22.

[0029] like Figure 5 As shown, at this time, the first filter element 83 descends to the inside of the first cylinder 2 and is in a slag discharge state, the second filter element 24 is in a filtering state, the cylinder 5 extends, and the spiral blade 71 is located inside the second cylinder 3, staggered with the first filter element 83 to avoid interference; when the filter residue filtered by the first filter element 83 is discharged into the first cylinder 2, the first filter element 83 rises to the inside of the water inlet pipe 21 to continue filtering, and then the spiral blade 71 descends and resets to Figure 4 In this state, the filter residue discharged into the first cylinder 2 can be rotated by the motor 4 to drive the spiral blade 71 to continuously send the filter residue discharged from the first filter element 83 and the filter residue filtered by the second filter element 24 upward and discharged through the residue discharge port 22.

[0030] It can be seen that the technical solution provided by the present invention can realize the integrated design of the multi-stage filtering system, realize the discharge of filter residues of the multi-stage filtering device at one time, and there will be no motion interference between the multi-stage filtering devices, which greatly improves the slag discharge efficiency, especially the slag discharge of the first-stage filtering component, thereby effectively avoiding the clogging of the filtering device and realizing the functions of continuous filtration and slag discharge. Secondly, the first filter element 83 descends to the inside of the first cylinder 2, which is also convenient for the inspection, maintenance and replacement of the first filter element 83. The first filter element 83 and the second filter element 24 can be inspected and replaced through the slag discharge port 22, further improving the efficiency of inspection and replacement.

[0031] Example 3 The slag discharge of the traditional multi-stage filtering device requires the setting of corresponding driving mechanisms, which makes the driving mechanism of the entire filtering device complicated, so further optimization design is made.

[0032] like Figures 1 to 20As shown, the outer wall of the positioning cylinder 6 is provided with a first rack 61, and the side wall of the first rack 61 is slidably provided on the inner wall of the second hole 37. The shape of the second hole 37 is the same as that of the positioning cylinder 6 and the first rack 61, that is, the positioning cylinder 6 is limited so that it is slidably provided on the inner wall of the second hole 37. The upper end of the second cylinder 3 is extended with a transmission box 31, and the upper end of the transmission box 31 is rotatably provided with a double groove pulley 94. The bottom end of the transmission box 31 is provided with a first pulley 91, and the first pulley 91 and the double groove pulley 94 are connected by a first belt 93; a first gear 9 is provided on one side of the first pulley 91, and the first gear 9 is meshed and connected with the first rack 61. The upper end of the water tank 1 is provided with an installation box, which includes two fixed plates 14 arranged opposite to each other and a connecting plate 15 connected to the two fixed plates 14. The installation box is in an H shape, and one end of the connecting plate 15 extends into the water tank 1. A guide groove 16 is provided inside the connecting plate 15, and a second rack 8 is slidably provided in the guide groove 16. The lifting assembly includes a second gear 97 and a second rack 8. A second pulley 96 is rotatably arranged on the connecting plate 15. The second pulley 96 is connected to the double-groove pulley 94 through a second belt 99. A second gear 97 is arranged on one side of the second pulley 96. The second gear 97 is meshingly connected with the second rack 8. A mounting shaft 81 is arranged at the bottom end of the second rack 8, and a first filter element 83 is detachably arranged at the bottom end of the mounting shaft 81.

[0033] Specifically, the transmission box 31 is provided with a second shaft hole 311 and a third shaft hole 312, a notch 313 is provided on one side of the transmission box 31, the first gear 9 and the first pulley 91 are provided on the first shaft 92, and the first shaft 92 is provided on the inner wall of the second shaft hole 311; the double groove pulley 94 is provided on the second shaft 95, and the second shaft 95 is provided on the inner wall of the third shaft hole 312; the fixed plate 14 is provided with a first shaft hole 141, the second gear 97 and the second pulley 96 are provided on the inner wall of the third shaft 98, and the third shaft 98 is provided on the inner wall of the first shaft hole 141. The double groove pulley 94 and the second pulley 96 are connected and driven by a second belt 99.

[0034] Furthermore, the diameter of the first pulley 91 is smaller than the diameter of the double-groove pulley 94, and the diameter of the double-groove pulley 94 is equal to the diameter of the second pulley 96. The purpose of this is to achieve a reduction transmission, that is, to achieve a reduction output through the first pulley 91 and the double-groove pulley 94, and finally make the extension speed of the rotating shaft 7 greater than the extension speed of the mounting shaft 81, so that the rotating shaft 7 and the mounting shaft 81 will not interfere with each other during the extension process. Figure 4At this time, the first filter element 83 is located inside the water inlet pipe 21, and the spiral blade 71 is located inside the first cylinder 2. When the cylinder 5 extends, the extension speed of the rotating shaft 7 is greater than the extension speed of the mounting shaft 81, so that the rotating shaft 7 drives the spiral blade 71 to quickly move upward to avoid the first filter element 83. That is to say, before the spiral blade 71 quickly moves upward to avoid the first filter element 83, the mounting shaft 81 is lowered in the water inlet pipe 21. In the process of the rotating shaft 7 avoiding the first filter element 83 and continuously moving upward, the mounting shaft 81 continues to descend and leave the water inlet pipe 21, and finally the first filter element 83 is lowered into the first cylinder 2 (such as Figure 5 as shown).

[0035] In the present invention, only one cylinder 5 and a motor 4 are needed to control the two-stage filtering device and realize the slag discharge function of the two-stage filtering device. This structure is ingenious and easy to control. It can compactly arrange the multi-stage filtering device and simplify the structure of the filtering device and the slag discharge device, which is convenient for slag discharge and maintenance.

[0036] Example 4 This embodiment further defines the structure of the first filter assembly, making it easier to inspect and replace after slag discharge.

[0037] like Figures 1 to 21 As shown, a valve body 82 is arranged on the installation shaft 81, and the valve body 82 and the first filter element 83 are arranged at a fixed distance. The valve body 82 is arranged on the upper part of the first filter element 83. When the first filter element 83 is located inside the first cylinder 2, the valve body 82 is close to the inner wall of the outlet pipe 11 to close the outlet pipe 11. The first filter element 83 is arranged in a cone shape, and a connecting cylinder 831 is arranged inside the first filter element 83. The connecting cylinder 831 is provided with an inner hole 832 inside. The connecting cylinder 831 is sleeved on the outer wall of the installation shaft 81. The connecting cylinder 831 can be threadedly connected with the installation shaft 81, or a plurality of threaded holes are arranged on the outer wall of the connecting cylinder 831, and screws are screwed in to tighten the installation shaft 81 to achieve the fixing of the connecting cylinder 831 and the installation shaft 81. With such a design, the descent of the installation shaft 81 can be controlled by the extension and contraction of the cylinder 5, so that the valve body 82 closes the outlet pipe 11, or does not close it. If the first filter element 83 descends into the first cylinder 2, and the valve body 82 does not close the water outlet pipe 11 at this time, water can continue to be discharged, and the filter residue on the inner wall of the water outlet pipe 11 and the surface of the first filter element 83 can be flushed to achieve complete discharge of the filter residue. The discharged geothermal water reaches the second cylinder 3 and is filtered by the second filter element 24; if the first filter element 83 continues to descend until the valve body 82 closes the water outlet pipe 11, the water tank 1 is closed at this time, and the first filter element 83 and the second filter element 24 can be repaired or replaced. Such a design can not only achieve a more thorough slag discharge operation, but also facilitate the repair and replacement of the first filter element 83 and the second filter element 24.

[0038] Example 5 like Figure 5As shown, when the first filter element 83 reaches the interior of the first barrel 2, the second filter element 24 is installed in the first barrel 2, and the first filter element 83 can be easily replaced, but the second filter element 24 is difficult to remove because it is restricted by the first filter element 83 and the installation shaft 81 extending into the interior of the first barrel 2. Therefore, further optimization design is made.

[0039] like Figures 1 to 24 As shown, a plug-in port is provided in the middle of the second filter element 24 , and the bottom end of the rotating shaft 7 can extend into the plug-in port and be plugged into the second filter element 24 , so as to facilitate the installation and disassembly of the second filter element 24 through the rotating shaft 7 .

[0040] like Fig.24 As shown, further, the second filter element 24 includes a shell 241 and a filter cartridge 242 arranged in the shell 241, a plug interface is arranged in the middle of the shell 241, an annular groove 243 is arranged on the outer wall of the plug interface, a spring 244 is connected in the plug interface, one end of the spring 244 is connected to a sealing ring 245, and the sealing ring 245 slides closely against the inner wall of the plug interface to achieve sealing and prevent water and impurities from entering the inside of the plug interface.

[0041] like Fig.23 As shown, an elastically compressible clamping shaft 76 is provided at the bottom end of the rotating shaft 7. Specifically, a T-shaped hole 73 is opened at the end of the rotating shaft 7, and a top block 74 is horizontally slidably arranged in the T-shaped hole 73. The two ends of the top block 74 are respectively connected to the clamping shaft 76 through springs 75, and the end of the clamping shaft 76 extends to the outer wall of the rotating shaft 7; a clamping screw 77 is vertically threadedly connected in the T-shaped hole 73, and the end of the clamping screw 77 is set to tighten the top block 74, thereby realizing the installation of the clamping shaft 76. This structure is convenient for disassembly and assembly.

[0042] like Fig.23 and Fig.24 As shown, when the cylinder 5 contracts and the shaft 7 descends, the end of the shaft 7 can squeeze the sealing ring 245, so that the clamping shaft 76 is clamped into the clamping groove 243, thereby realizing the insertion of the shaft 7 and the second filter element 24. In this way, when the cylinder 5 is extended, the shaft 7 can drive the second filter element 24 to move upward to the slag discharge port 22 (as shown in FIG. Figure 6As shown), the second filter element 24 is disassembled synchronously. The outer wall of the housing 241 is provided with a plurality of ejection screws 246, and an elastic bellows 247 is sleeved on the ejection screws 246 to achieve a sealing effect and prevent water seepage. The ejection screws 246 are arranged opposite to the clamping groove 243 and can extend into the clamping groove 243, so that it is convenient to tighten the ejection screws 246, squeeze the clamping shaft 76, and make the clamping shaft 76 clamped into the T-shaped hole 73 and separated from the clamping groove 243, so that the clamping connection between the clamping shaft 76 and the clamping groove 243 can be released, and the second filter element 24 and the rotating shaft 7 can be disassembled. During installation, similarly, it is necessary to tighten the ejector screw 246, and the ejector screw 246 extends into the card slot 243, and the card shaft 76 is pushed into the T-shaped hole 73. Due to the elastic force of the spring 25, the card shaft 76 is tightly fitted to the end of the ejector screw 246, so that the connection between the rotating shaft 7 and the second filter element 24 is realized. In this case, the second filter element 24 can be stably plugged into the end of the rotating shaft 7, but it does not affect the insertion and removal of the second filter element 24, and the replaced second filter element 24 can be inserted into the first filter element 24 as the rotating shaft 7 descends. When the inside of the cylinder 2 reaches the installation position, a threaded hole is opened from the outside of the first cylinder 2, and the screw is screwed in to tighten the outer wall of the second filter element 24 to fix it. The rotating shaft 7 can be retracted to release the connection between the rotating shaft 7 and the second filter element 24. At this time, the ejector screw 246 presses the clamping shaft 76 into the T-shaped hole 73, and the clamping shaft 76 is not clamped in the clamping groove 243. Therefore, the rotating shaft 7 can directly detach from the plug-in hole of the second filter element 24 when it rises. After the rotating shaft 7 is detached, the sealing ring 245 is reset to achieve sealing.

[0043] This connection structure facilitates the lowering of the first filter element 83 into the first cylinder 2 for inspection and replacement, and also facilitates the disassembly and assembly of the second filter element 24. In actual filtering, the corresponding operation process can be selected according to the specific situation: for example, Figure 5 As shown, the first filter element 83 is lowered and the spiral blade 71 is lifted to realize the slag discharge of the first filter element 83 or the maintenance and replacement operation of the first filter element 83. At this time, the second filter element 24 is in the filtering state when the first filter element 83 is discharging slag, and the second filter element 24 is in the stopped filtering state when the first filter element 83 is being repaired and replaced; it can also be as shown in FIG. Figure 6 As shown, the second filter element 24 is lifted by the lowering of the first filter element 83 and the lifting of the spiral blade 71. At this time, the first filter element 83 and the second filter element 24 are both in the maintenance and replacement state, and the valve body 82 closes the water outlet pipe 11.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for precise filtration of geothermal water, characterized in that : It includes a primary filter component and a secondary filter component. The primary filter assembly includes a water tank and a first filter element. The bottom end of the water tank is provided with a water outlet pipe. The first filter element is cooperatively arranged on the inner wall of the water outlet pipe. The water tank is provided with a lifting assembly for driving the first filter element to lift and lower. The second filter assembly includes a first cylinder and a second filter element. A water inlet pipe is extended from the upper side of the first cylinder. The water inlet pipe and the water outlet pipe are detachably connected. The first cylinder is tilted. A slag discharge port is provided on the lower side of the upper end of the first cylinder. The second filter element is provided inside the first cylinder. The water inlet pipe is located between the second filter element and the slag discharge port. A water outlet is provided at the bottom end of the first cylinder. The first cylinder is provided with a spiral feeding mechanism, and the spiral feeding mechanism is used to discharge the filter residue in the first cylinder.

2. The device for precise filtration of geothermal water according to claim 1, characterized in that: The spiral feeding mechanism includes a second cylinder, a positioning cylinder, a motor, a cylinder, a rotating shaft and a spiral blade. The bottom end of the second cylinder is detachably connected to the upper end of the first cylinder, the second cylinder is provided with hole one, hole two and hole three in sequence, the positioning cylinder is provided on the inner wall of hole two, the rotating shaft is rotatably provided on the inner wall of the positioning cylinder, a spiral blade is provided on the outer wall of one end of the rotating shaft, a limiting groove is provided on the other end of the rotating shaft, the motor is connected to the output shaft for transmission, a limiting protrusion is provided on the outer wall of the output shaft, the output shaft is slidably provided inside the rotating shaft, and the limiting protrusion is matched and provided in the limiting groove; A cylinder is provided at the bottom end of the second cylinder, a slider is connected to the end of the piston rod of the cylinder, a rotary joint is provided at the upper end of the slider, and the rotary joint is rotatably connected to the rotating shaft; a slide groove is provided at the bottom end of the second cylinder, and the slider is slidably set in the slide groove; the cylinder can drive the spiral blade to extend into the first cylinder or be received in the second cylinder.

3. The device for precise filtration of geothermal water according to claim 2, characterized in that: The outer wall of the positioning cylinder is provided with a first rack, and the side wall of the first rack is slidably arranged on the inner wall of the second hole; A transmission box is extended from the upper end of the second cylinder, a double-groove pulley is rotatably provided on the upper end of the transmission box, a first pulley is provided on the bottom end of the transmission box, and the first pulley and the double-groove pulley are connected by a first belt; A first gear is disposed on one side of the first pulley, and the first gear is meshed and connected with a first rack; An installation box is provided at the upper end of the water tank, and the installation box includes two fixed plates arranged opposite to each other and a connecting plate connected to the two fixed plates, one end of the connecting plate extends into the water tank, a guide groove is provided inside the connecting plate, and a second rack is slidably provided in the guide groove; The lifting assembly includes a second gear and a second rack, a second pulley is rotatably arranged on the connecting plate, the second pulley is connected to the double-groove pulley through a second belt, a second gear is arranged on one side of the second pulley, the second gear is meshingly connected with the second rack, a mounting shaft is arranged at the bottom end of the second rack, and the first filter element is detachably arranged at the bottom end of the mounting shaft.

4. The device for precise filtration of geothermal water according to claim 3, characterized in that: The diameter of the first pulley is smaller than the diameter of the double-groove pulley, and the diameter of the double-groove pulley is equal to the diameter of the second pulley.

5. The device for precise filtration of geothermal water according to claim 3, characterized in that: The bottom end of the cylinder is connected to the side wall of the slag discharge port by bolts, and an L-shaped positioning block is arranged at the upper end of the cylinder. The positioning block is arranged close to the bottom wall of the chute and is connected to the bottom wall of the chute by bolts.

6. The device for precise filtration of geothermal water according to claim 3, characterized in that: A valve body is arranged on the installation shaft, and the valve body is arranged on the upper part of the first filter element. When the first filter element is located inside the first cylinder, the valve body is tightly attached to the inner wall of the water outlet pipe to close the water outlet pipe.

7. The device for precise filtration of geothermal water according to claim 3, characterized in that: An inserting port is arranged in the middle of the second filter element, and the bottom end of the rotating shaft can extend into the inserting port and be inserted into the second filter element.

8. The device for precise filtration of geothermal water according to claim 7, characterized in that: The second filter element includes an outer shell and a filter cartridge arranged in the outer shell, a plug-in interface is arranged in the middle of the outer shell, an annular groove is arranged on the outer wall of the plug-in interface, a spring 1 is connected to the plug-in interface, one end of the spring 1 is connected to a sealing ring, and the sealing ring slides closely against the inner wall of the plug-in interface; an elastically compressible clamping shaft is arranged at the bottom end of the rotating shaft, and the rotating shaft can squeeze the sealing ring so that the clamping shaft is clamped into the groove; a plurality of ejection screws are arranged on the outer wall of the outer shell, and the ejection screws are arranged opposite to the groove.

9. The device for precise filtration of geothermal water according to claim 3, characterized in that: A first rib plate is disposed on one side of the transmission box, and a second rib plate is disposed on one side of the water tank. The first rib plate and the second rib plate are butt-jointed and connected by bolts.

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