A filtering system for cooling circulating water system

Abstract

The present invention belongs to the technical field of cooling circulating water, and provides a filtering system for a cooling circulating water system, including a water pipe, and a plate heat exchanger, a booster pump, a permanent magnetic filtering device, an impurity removal device, and a mixed bed connected in series in sequence through the water pipe; the impurity removal device includes a shell and a filter cartridge, a connecting hole is connected between the shell and the filter cartridge, a diversion groove is connected on both sides of the shell, and a guide orifice plate is arranged between the shell and the diversion groove, and a connecting pipe is connected between the diversion groove and the filter cartridge. This filtering system for a cooling circulating water system can not only improve the water quality and improve the operating efficiency of the cooling circulating water system, but also reduce the maintenance cost and downtime caused by problems such as equipment corrosion and blockage, and improve the safety of the overall equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of cooling circulating water, and in particular relates to a filtering system for a cooling circulating water system. Background Art

[0002] With the rapid development of the domestic power industry, the requirements of major power plants for cooling water quality are also increasing. As an important part of the cooling system of power plants, the quality of indirect cooling circulating water has a direct impact on the operating efficiency and service life of power plant equipment.

[0003] According to the follow-up investigation of the intercooling circulating water system of domestic power plants, it is found that after a period of operation, the circulating water generally has a series of water quality problems of varying degrees, such as excessive conductivity, turbidity, and iron content. In particular, the iron content is more likely to exceed the standard requirement by more than 10 times. Due to poor water quality conditions, the risk of various corrosion hazards increases linearly. The equipment in the cooling circulating water system is mainly made of metal. If the water quality exceeds the standard and is used for a long time, it will cause the following problems:

[0004] 1. Equipment corrosion perforation: The main causes of corrosion include electrochemical corrosion caused by dissolved oxygen in cooling water, harmful ions (such as Cl - and SO 4 2- ) and corrosion caused by microorganisms (such as anaerobic bacteria, iron bacteria), etc.

[0005] 2. Equipment scaling: Iron ions react with phosphates to form highly adhesive compounds, such as iron phosphate, which may catalyze and accelerate the scaling of calcium and magnesium ions, resulting in fouling and under-scale corrosion. Iron ions react with oxygen to form colloidal iron, which causes coagulation on the metal surface, resulting in fouling and possibly under-scale corrosion, causing damage to equipment and increasing maintenance costs. In more serious cases, the safety risk of the entire cooling water circulation system during operation is significantly increased. Summary of the invention

[0006] The purpose of the present invention is to provide a filtering system for a cooling circulating water system, aiming to solve the technical problem in the prior art that the water in the cooling circulating water system has too many impurities and is difficult to clean.

[0007] The present invention is implemented as follows: a filtering system for a cooling circulating water system comprises a water pipe, and a plate heat exchanger, a booster pump, a permanent magnetic filtering device, an impurity removal device and a mixed bed which are sequentially connected in series through the water pipe;

[0008] The impurity removal device comprises a shell and a filter cartridge, a connecting hole is connected between the shell and the filter cartridge, both sides of the shell are connected with a diversion groove, and a guide hole plate is arranged between the shell and the diversion groove, and a connecting pipe is connected between the diversion groove and the filter cartridge;

[0009] The diverter groove is provided with a driving assembly capable of closing the guide orifice plate, the side walls of the shell where the guide orifice plate is located are provided with a drainage mechanism for filtering and diverting the cooling circulating water, the middle part of the shell is provided with a guide sleeve, the guide sleeve is in a rhombus shape, and the guide sleeve is composed of four guide plates that are rotatably connected in sequence, the rotating connecting shaft of the guide sleeve close to the connecting hole is fixedly connected to the inner end surface of the shell, and an adjustment mechanism for adjusting the angle of the guide sleeve is provided between the guide sleeve and the shell;

[0010] The filter cartridge is provided with a filter separation mechanism for filtering the cooling circulating water, a guide pipe is connected between the filter cartridge and the water pipe, and a filter screen is provided between the connecting port of the guide pipe and the water pipe, the filter separation mechanism can collect impurities left by the filtration into the guide pipe, and a collection component for collecting impurities is provided in the guide pipe.

[0011] Further technical solution: the adjustment mechanism includes a transmission rod, a connecting seat, a connecting rod and a No. 1 motor;

[0012] The end face of the shell located inside the guide sleeve is fixedly connected to a fixing seat, the fixing seat is rotatably connected to a transmission rod, the No. 1 motor is fixedly connected to the fixing seat, and the output shaft of the No. 1 motor is fixedly connected to the transmission rod, the transmission rod is threadedly connected to a connecting seat, the connecting seat is rotatably connected to two connecting rods, and the two connecting rods are respectively rotatably connected to the guide plates on both sides of the transmission rod.

[0013] Further technical solution: the driving assembly includes a sealing seat and an electric rod, the sealing seat is slidably and sealingly connected to the side wall of the diverter groove, and the electric rod is connected between the sealing seat and one end surface of the diverter groove.

[0014] Further technical solution: the drainage mechanism includes a drainage groove, a filter plate and a thrust assembly;

[0015] A plurality of drainage grooves are slidably connected to the side wall of the shell where the guide hole plate is located. The drainage grooves are trapezoidal, and both ends of the drainage grooves are conductive. The end with the larger opening of the drainage groove faces away from the filter cartridge, and the end with the larger opening of the drainage groove is rotatably connected to the filter plate through an elastic torsion spring. All the drainage grooves are commonly connected to a thrust assembly, and the thrust assembly can adjust the position of all the drainage grooves.

[0016] Further technical solution: the thrust assembly includes a guide rod, a stopper, a spring and an electric telescopic sleeve;

[0017] The guide rod is fixedly connected to the side wall of the shell, each drainage groove is fixedly connected to a block, the guide rod passes through all the blocks, and springs are connected between all the blocks. One end of the guide rod is fixedly connected to an electric telescopic sleeve, and the telescopic end of the electric telescopic sleeve elastically abuts against a block on the outermost side.

[0018] Further technical solution: the filtering and separating mechanism comprises a rotating shaft, a filtering membrane plate, a water retaining plate and a magnetic block;

[0019] The rotating shaft is rotatably connected to the inner end surface of the filter cartridge, and the rotating shaft is fixedly connected with two filter membrane plates and two water baffles. The filter membrane plates and the water baffles are arranged at intervals, and adjacent filter membrane plates and water baffles are perpendicular to each other. The top and bottom ends of the filter cartridge are fixedly provided with magnetic blocks, and the sides of the filter membrane plates are provided with iron blocks. The magnetic blocks can be attracted to the iron blocks. When the magnetic blocks are fixed to the filter membrane plates, the connecting holes and the through holes at one end of the connecting pipe are respectively located on both sides of a water baffle.

[0020] Further technical solution: the collection assembly includes a second motor, a connecting shaft and a spiral screen plate;

[0021] The second motor is fixedly connected to one end face of the guide tube, the connecting shaft is fixedly connected to the output shaft of the second motor, a spiral mesh plate is spirally arranged along the length direction of the connecting shaft, and the spiral mesh plate is in contact with the inner wall of the guide tube.

[0022] Further technical solution: the housing is electrically connected to a control system, the control system comprising a first pressure sensor, a second pressure sensor, a computer processor and a PLC controller;

[0023] A No. 1 pressure sensor is provided on the two guide plates of the guide sleeve away from the connecting hole, a No. 2 pressure sensor is provided between the stop block and the spring, the No. 1 pressure sensor, the No. 2 pressure sensor and the PLC controller are electrically connected to the computer processor, and the PLC controller is electrically connected to the regulating mechanism, the driving component and the drainage mechanism.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. This filtration system for cooling circulating water system can not only improve water quality and improve the operating efficiency of cooling circulating water system, but also reduce maintenance costs and downtime caused by equipment corrosion and blockage, and improve the safety of the overall equipment. At the same time, this filtration system for cooling circulating water system can reduce maintenance rate, save replacement materials and labor costs, and through reasonable process design and equipment selection, it can reduce processing costs and improve economic benefits;

[0026] 2. When the cooling circulating water enters the shell, the guide sleeve guides the cooling circulating water. Part of the cooling circulating water directly enters the filter cartridge through the connecting hole. Under the guidance of the two water retaining plates, the inside of the filter cartridge is divided into two parts. Part of the cooling circulating water is filtered by the filter membrane plates on the upper sides of the two water retaining plates and then flows out of the filter cartridge; the other part of the cooling circulating water enters the diversion trough through the filtration of the drainage mechanism, thereby diverting the cooling circulating water and improving the filtering efficiency of the cooling circulating water.

[0027] 3. When the filter membrane plates on the upper sides of the two water retaining plates are clogged, the water pressure on the filter membrane plates on the upper sides of the two water retaining plates increases. Under the action of the water pressure, the rotating shaft drives the two filter membrane plates to rotate, and the filter membrane plates on the upper sides of the two water retaining plates flip to the lower side of the filter cylinder. At this time, under the action of the water flow out of the diversion trough, the impurities attached to the filter membrane plates are washed into the guide pipe, which can effectively avoid the filter membrane plates from being clogged;

[0028] 4. When the pressure value of the No. 1 pressure sensor exceeds the corresponding preset pressure threshold in the computer processor, and the pressure values ​​of some No. 2 pressure sensors also exceed the corresponding preset pressure threshold in the computer processor, the PLC controller controls the thrust assembly to start, and the thrust assembly pushes all the diversion grooves to concentrate at the guide orifice plate, thereby increasing the guiding and diverting effect on the cooling circulating water. At the same time, the PLC controller controls the driving assembly to further release the sealing of the guide orifice plate, thereby increasing the flow capacity of the guide orifice plate;

[0029] 5. When the pressure value of pressure sensor No. 1 is lower than the corresponding preset pressure threshold in the computer processor, and the pressure value of some pressure sensors No. 2 exceeds the corresponding preset pressure threshold in the computer processor, the PLC controller controls the adjustment mechanism to start, and the adjustment mechanism drives the two guide plates connected to it to move closer to each other, and the cooling circulating water is concentrated at the connecting hole, and part of the cooling circulating water flows back to the drainage mechanisms on both sides, and the cooling circulating water flushes the filter plate through the drainage groove, thereby flushing out the impurities blocked on the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is the connection principle diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the overall structure of the impurity removal device in the present invention.

[0032] Figure 3 It is a schematic diagram of the internal structure of the shell in the present invention.

[0033] Figure 4 It is a side view structural schematic diagram of the present invention.

[0034] Figure 5 It is a schematic diagram of the structure of the filtering and separation mechanism and the collecting assembly in the present invention.

[0035] Figure 6 Schematic diagram of the internal structure of the diversion trough in the present invention.

[0036] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of area A in the middle.

[0037] Figure 8 It is a structural schematic diagram of the adjustment mechanism in the present invention.

[0038] In the attached figure: 1, plate heat exchanger; 2, booster pump; 3, permanent magnet filter device; 4, mixed bed; 5, adjustment mechanism; 51, transmission rod; 52, connecting seat; 53, connecting rod; 54, No. 1 motor; 6, driving assembly; 61, sealing seat; 62, electric rod; 7, drainage mechanism; 71, drainage groove; 72, filter plate; 73, thrust assembly; 731, guide rod; 732, stopper; 733, spring; 73 4. Electric telescopic sleeve; 8. Filter separation mechanism; 81. Rotating shaft; 82. Filter membrane plate; 83. Water retaining plate; 84. Magnetic block; 9. Collecting assembly; 91. No. 2 motor; 92. Connecting shaft; 93. Spiral mesh plate; 10. Water pipe; 11. Outer shell; 12. Filter cartridge; 13. Guide sleeve; 14. Fixed seat; 15. Diversion slot; 16. Guide hole plate; 17. Guide pipe; 18. Connecting pipe; 19. Connecting hole. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0041] like Figure 1-Figure 8 As shown, a filtering system for a cooling circulating water system provided by the present invention comprises a water pipe 10, and a plate heat exchanger 1, a booster pump 2, a permanent magnetic filtering device 3, an impurity removal device and a mixed bed 4 which are sequentially connected in series through the water pipe 10;

[0042] The impurity removal device includes a shell 11 and a filter cartridge 12, a connecting hole 19 is connected between the shell 11 and the filter cartridge 12, both sides of the shell 11 are connected with a diversion groove 15, and a guide hole plate 16 is arranged between the shell 11 and the diversion groove 15, and a connecting pipe 18 is connected between the diversion groove 15 and the filter cartridge 12;

[0043] The diverter slot 15 is provided with a driving assembly 6 capable of closing the guide orifice plate 16, and the side walls of the housing 11 where the guide orifice plate 16 is located are provided with a drainage mechanism 7 for filtering and diverting the cooling circulating water, and the middle part of the housing 11 is provided with a guide sleeve 13, the guide sleeve 13 is rhombus-shaped, and the guide sleeve 13 is composed of four guide plates that are rotatably connected in sequence, and the rotation connecting shaft of the guide sleeve 13 close to the connecting hole 19 is fixedly connected to the inner end surface of the housing 11, and an adjustment mechanism 5 for adjusting the angle of the guide sleeve 13 is provided between the guide sleeve 13 and the housing 11;

[0044] The filter cartridge 12 is provided with a filter separation mechanism 8 for filtering the cooling circulating water, a guide pipe 17 is connected between the filter cartridge 12 and the water pipe 10, and a filter screen is provided between the connecting port of the guide pipe 17 and the water pipe 10, the filter separation mechanism 8 can collect the impurities left by the filtration into the guide pipe 17, and the guide pipe 17 is provided with a collection component 9 for collecting impurities.

[0045] In this embodiment, the cooling circulating water passes through the plate heat exchanger 1, the booster pump 2, the permanent magnetic filter device 3, the impurity removal device and the mixed bed 4 in sequence;

[0046] When the cooling circulating water enters the outer shell 11, the cooling circulating water is guided by the guide sleeve 13, and part of the cooling circulating water directly enters the filter cartridge 12, and is directly filtered by the filtering and separating mechanism 8. Under the guiding action of the guide sleeve 13, the other part of the cooling circulating water is filtered and guided by the drainage mechanism 7. After filtering the larger impurities in the cooling circulating water, it enters the diversion groove 15 through the guide orifice plate 16, thereby diverting the cooling circulating water and improving the filtering efficiency of the cooling circulating water. After that, the cooling circulating water in the diversion groove 15 passes through the filter cartridge 12, and the impurities left by the filtration in the filter cartridge 12 are gathered in the guide pipe 17 and collected by the collecting component 9.

[0047] like Figure 8 As shown, a filtering system for a cooling circulating water system provided by the present invention is provided, wherein the regulating mechanism 5 comprises a transmission rod 51, a connecting seat 52, a connecting rod 53 and a first motor 54;

[0048] The end face of the shell 11 located inside the guide sleeve 13 is fixedly connected with a fixing seat 14, and the fixing seat 14 is rotatably connected with a transmission rod 51. The No. 1 motor 54 is fixedly connected to the fixing seat 14, and the output shaft of the No. 1 motor 54 is fixedly connected to the transmission rod 51. The transmission rod 51 is threadedly connected with a connecting seat 52, and the connecting seat 52 is rotatably connected with two connecting rods 53. The two connecting rods 53 are respectively rotatably connected to the guide plates on both sides of the transmission rod 51.

[0049] In this embodiment, the No. 1 motor 54 is started, and the No. 1 motor 54 drives the transmission rod 51 connected to it to rotate. The transmission rod 51 drives the connecting seat 52 to move through the threaded transmission. The connecting seat 52 pulls the two connected guide plates to move relative to each other through the connecting rod 53, thereby changing the guide direction of the guide sleeve 13.

[0050] like Figure 7 As shown, a filtering system for a cooling circulating water system provided by the present invention, the driving assembly 6 includes a sealing seat 61 and an electric rod 62, the sealing seat 61 is slidably and sealedly connected to the side wall of the diversion groove 15, and the electric rod 62 is connected between the sealing seat 61 and one end face of the diversion groove 15.

[0051] In this embodiment, the electric rod 62 is activated to extend and retract, and the electric rod 62 drives the sealing seat 61 to slide in the diverter groove 15, and the flow area of ​​the guide orifice plate 16 is adjusted through the sealing seat 61, thereby adjusting the flow efficiency of the guide orifice plate 16.

[0052] like Figure 7 As shown, a filtering system for a cooling circulating water system provided by the present invention is provided, wherein the drainage mechanism 7 comprises a drainage groove 71, a filter plate 72 and a thrust assembly 73;

[0053] A plurality of drainage grooves 71 are slidably connected on the side wall of the shell 11 where the guide hole plate 16 is located. The drainage groove 71 is trapezoidal, and both ends of the drainage groove 71 are conductive. The end of the drainage groove 71 with a larger opening faces away from the filter cartridge 12. The end of the drainage groove 71 with a larger opening is rotatably connected to the filter plate 72 through an elastic torsion spring. All the drainage grooves 71 are commonly connected to a thrust assembly 73, and the thrust assembly 73 can adjust the position of all the drainage grooves 71.

[0054] In this embodiment, the cooling circulating water is filtered by the filter plate 72, and under the guidance of the side wall of the drainage groove 71, the filtered cooling circulating water is concentrated at the guide hole plate 16, thereby increasing the diversion effect of the cooling circulating water; the thrust assembly 73 can adjust the position of all the drainage grooves 71, and adjust the guidance and filtering effect of the drainage grooves 71 and the filter plate 72.

[0055] like Figure 7 As shown, a filtering system for a cooling circulating water system provided by the present invention is provided, wherein the thrust assembly 73 includes a guide rod 731, a stopper 732, a spring 733 and an electric telescopic sleeve 734;

[0056] The guide rod 731 is fixedly connected to the side wall of the shell 11, and each drainage groove 71 is fixedly connected to a block 732. The guide rod 731 passes through all the blocks 732, and springs 733 are connected between all the blocks 732. One end of the guide rod 731 is fixedly connected to an electric telescopic sleeve 734, and the telescopic end of the electric telescopic sleeve 734 elastically abuts against a block 732 on the outermost side.

[0057] In this embodiment, the electric telescopic sleeve 734 is started to extend and retract, and the electric telescopic sleeve 734 pushes the block 732 it contacts. Driven by all the springs 733, all the blocks 732 drive all the drainage grooves 71 to move synchronously, thereby adjusting the positions of all the drainage grooves 71 and the filter plates 72 on the outer shell 11.

[0058] like Figure 5 As shown, a filtering system for a cooling circulating water system provided by the present invention is shown, wherein the filtering and separating mechanism 8 comprises a rotating shaft 81, a filtering membrane plate 82, a water retaining plate 83 and a magnetic block 84;

[0059] The rotating shaft 81 is rotatably connected to the inner end surface of the filter cartridge 12, and the rotating shaft 81 is fixedly connected with two filter membrane plates 82 and two water baffles 83. The filter membrane plates 82 and the water baffles 83 are arranged at intervals, and the adjacent filter membrane plates 82 and water baffles 83 are perpendicular to each other. The top and bottom ends of the filter cartridge 12 are fixedly provided with magnetic blocks 84, and the sides of the filter membrane plates 82 are provided with iron blocks. The magnetic blocks 84 can be attracted to the iron blocks. When the magnetic blocks 84 fix the filter membrane plates 82, the connecting holes 19 and the through holes at one end of the connecting pipe 18 are respectively located on both sides of a water baffle 83.

[0060] In this embodiment, part of the cooling circulating water directly enters the filter cartridge 12 through the connecting hole 19. Under the guiding action of the two water baffles 83, the inside of the filter cartridge 12 is divided into two parts. Part of the cooling circulating water is filtered by the filter membrane plate 82 on the upper side of the two water baffles 83 and then flows out of the filter cartridge 12; the other part of the cooling circulating water enters the diversion groove 15 through the filtration of the drainage mechanism 7, and then under the conduction of the connecting pipe 18, this part of the cooling circulating water is filtered by the filter membrane plate 82 on the lower side of the two water baffles 83 and flows into the guide pipe 17;

[0061] Since the cooling circulating water flowing into the filter cartridge 12 through the connecting hole 19 has not been filtered in advance, it is easy for more impurities to adhere to the filter membrane plates 82 on the upper sides of the two water baffles 83. When the filter membrane plates 82 on the upper sides of the two water baffles 83 are blocked, the water pressure on the filter membrane plates 82 on the upper sides of the two water baffles 83 increases. Under the action of the water pressure, the rotating shaft 81 drives the two filter membrane plates 82 to rotate, and the filter membrane plates 82 on the upper sides of the two water baffles 83 are flipped to the lower side of the filter cartridge 12, and the end faces of the filter membrane plates 82 on the upper sides of the two water baffles 83, to which impurities were originally attached, face the water inlet of the guide tube 17 after flipping. At this time, under the action of the water flow flowing out of the diversion trough 15, the impurities attached to the filter membrane plates 82 are washed into the guide tube 17, which can effectively prevent the filter membrane plates 82 from being blocked.

[0062] like Figure 5 As shown, a filtering system for a cooling circulating water system provided by the present invention is provided, wherein the collecting assembly 9 comprises a second motor 91, a connecting shaft 92 and a spiral mesh plate 93;

[0063] The second motor 91 is fixedly connected to one end surface of the guide tube 17, and the connecting shaft 92 is fixedly connected to the output shaft of the second motor 91. A spiral mesh plate 93 is spirally arranged along the length direction of the connecting shaft 92, and the spiral mesh plate 93 is in contact with the inner wall of the guide tube 17.

[0064] In this embodiment, the second motor 91 is started, the second motor 91 drives the connecting shaft 92 to rotate, the connecting shaft 92 drives the spiral mesh plate 93 to rotate, and the spiral mesh plate 93 collects and compresses the impurities.

[0065] The present invention provides a filtering system for a cooling circulating water system, wherein the housing 11 is electrically connected to a control system, and the control system includes a first pressure sensor, a second pressure sensor, a computer processor, and a PLC controller;

[0066] A No. 1 pressure sensor is provided on the two guide plates of the guide sleeve 13 facing away from the connecting hole 19, and a No. 2 pressure sensor is provided between the block 732 and the spring 733. The No. 1 pressure sensor, the No. 2 pressure sensor and the PLC controller are electrically connected to the computer processor, and the PLC controller is electrically connected to the adjusting mechanism 5, the driving component 6 and the drainage mechanism 7.

[0067] When the pressure value of the No. 1 pressure sensor exceeds the corresponding preset pressure threshold in the computer processor, and the pressure values ​​of some No. 2 pressure sensors also exceed the corresponding preset pressure threshold in the computer processor, it means that the water pressure is too high. The PLC controller controls the thrust assembly 73 to start, and the thrust assembly 73 pushes all the drainage grooves 71 to concentrate on the guide orifice plate 16, thereby increasing the guiding and diverting effect on the cooling circulating water. At the same time, the PLC controller controls the driving assembly 6 to further release the closure of the guide orifice plate 16, thereby increasing the flow capacity of the guide orifice plate 16.

[0068] When the pressure value of pressure sensor No. 1 is less than the corresponding preset pressure threshold in the computer processor, and the pressure value of some pressure sensors No. 2 exceeds the corresponding preset pressure threshold in the computer processor, it means that part of the filter plate 72 is blocked, affecting the flow effect of the filter plate 72. The PLC controller controls the adjustment mechanism 5 to start, and the adjustment mechanism 5 drives the two guide plates connected to it to approach each other. At this time, the diversion effect of the guide plate on the cooling circulating water is weakened, and the cooling circulating water is concentrated at the connecting hole 19. At this time, the connecting hole 19 cannot discharge the cooling circulating water in time, and part of the cooling circulating water flows back to the drainage mechanism 7 on both sides. The cooling circulating water flushes the filter plate 72 through the drainage groove 71, thereby flushing out the impurities blocked on the filter plate 72. The impurities enter the connecting hole 19 with the cooling circulating water, and are then filtered by the filtering and separation mechanism 8; after a period of time, the adjustment mechanism 5 drives the two guide plates connected to it to reset.

[0069] Working principle:

[0070] The cooling circulating water passes through the plate heat exchanger 1, the booster pump 2, the permanent magnetic filter device 3, the impurity removal device and the mixed bed 4 in sequence;

[0071] The plate heat exchanger 1 is a heat exchange device, which is mainly used for cooling circulating water to protect the resin and instruments from running safely in the hot summer; the booster pump 2 is used to provide a stable and adjustable water flow pressure to ensure that the water flows smoothly in the filtration system. Through the control of the frequency converter, the output flow and pressure of the booster pump 2 can be adjusted according to actual needs; the permanent magnetic filter device 3 is used to remove iron ions and impurities in the cooling circulating water. The space matrix magnetic field technology is used to filter out the iron oxidation corrosion products in the cooling circulating water to reduce the impact of corrosion on the pipe network; the impurity removal device is used to filter and remove the remaining impurities in the water except the iron oxidation corrosion products and collect them; the mixed bed 4 is an ion exchange device, which is mainly used to remove anions and cations in the water, and the anions and cations in the water are adsorbed by the resin, so as to achieve the purpose of softening the water quality.

[0072] When the cooling circulating water enters the housing 11, the cooling circulating water is guided by the guide sleeve 13, and part of the cooling circulating water directly enters the filter cartridge 12 through the connecting hole 19. Under the guiding action of the two water baffles 83, the inside of the filter cartridge 12 is divided into two parts. Part of the cooling circulating water is filtered by the filter membrane plate 82 on the upper side of the two water baffles 83 and then flows out of the filter cartridge 12; the other part of the cooling circulating water enters the diversion groove 15 through the filtration of the drainage mechanism 7, and then under the conduction of the connecting pipe 18, this part of the cooling circulating water is filtered by the filter membrane plate 82 on the lower side of the two water baffles 83 and flows into the guide pipe 17;

[0073] Since the cooling circulating water flowing into the filter cartridge 12 through the connecting hole 19 has not been filtered in advance, it is easy for more impurities to be attached to the filter membrane plates 82 on the upper sides of the two water retaining plates 83. When the filter membrane plates 82 on the upper sides of the two water retaining plates 83 are blocked, the water pressure on the filter membrane plates 82 on the upper sides of the two water retaining plates 83 increases. Under the action of the water pressure, the rotating shaft 81 drives the two filter membrane plates 82 to rotate, and the filter membrane plates 82 on the upper sides of the two water retaining plates 83 are turned over to the lower side of the filter cartridge 12. The end faces of the filter membrane plates 82 on the upper sides of the two water retaining plates 83, which originally have impurities attached, face the water inlet of the guide tube 17 after turning over. At this time, under the action of the water flow flowing out of the diversion groove 15, the impurities attached to the filter membrane plates 82 are washed into the guide tube 17, which can effectively avoid the filter membrane plates 82 from being blocked.

[0074] In the drainage mechanism 7, the cooling circulating water is filtered by the filter plate 72. Under the guidance of the side wall of the drainage groove 71, the filtered cooling circulating water is concentrated at the guide hole plate 16, thereby increasing the diversion effect of the cooling circulating water.

[0075] In the guide tube 17, the second motor 91 drives the connecting shaft 92 to rotate, and the connecting shaft 92 drives the spiral mesh plate 93 to rotate. The spiral mesh plate 93 pushes the impurities into the guide tube 17, thereby collecting and compressing the impurities.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0077] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A filtration system for a cooling circulating water system, comprising a water pipe, and a plate heat exchanger, a booster pump, a permanent magnetic filter device, an impurity removal device and a mixed bed connected in series in sequence through the water pipe; characterized in that ； The impurity removal device comprises a shell and a filter cartridge, a connecting hole is connected between the shell and the filter cartridge, both sides of the shell are connected with a diversion groove, and a guide hole plate is arranged between the shell and the diversion groove, and a connecting pipe is connected between the diversion groove and the filter cartridge; The diverter groove is provided with a driving assembly capable of closing the guide orifice plate, the side walls of the shell where the guide orifice plate is located are provided with a drainage mechanism for filtering and diverting the cooling circulating water, the middle part of the shell is provided with a guide sleeve, the guide sleeve is in a rhombus shape, and the guide sleeve is composed of four guide plates that are rotatably connected in sequence, the rotating connecting shaft of the guide sleeve close to the connecting hole is fixedly connected to the inner end surface of the shell, and an adjustment mechanism for adjusting the angle of the guide sleeve is provided between the guide sleeve and the shell; The filter cartridge is provided with a filter separation mechanism for filtering the cooling circulating water, a guide pipe is connected between the filter cartridge and the water pipe, and a filter screen is provided between the connecting port of the guide pipe and the water pipe, the filter separation mechanism can collect the impurities left by the filtration into the guide pipe, and a collection component for collecting the impurities is provided in the guide pipe; The adjustment mechanism includes a transmission rod, a connecting seat, a connecting rod and a No. 1 motor; the end surface of the housing located inside the guide sleeve is fixedly connected to a fixing seat, the fixing seat is rotatably connected to the transmission rod, the No. 1 motor is fixedly connected to the fixing seat, and the output shaft of the No. 1 motor is fixedly connected to the transmission rod, the transmission rod is threadedly connected to the connecting seat, the connecting seat is rotatably connected to two connecting rods, and the two connecting rods are rotatably connected to the guide plates on both sides of the transmission rod respectively; The drainage mechanism includes a drainage groove, a filter plate and a thrust assembly; a plurality of drainage grooves are slidably connected on the side wall of the shell where the guide hole plate is located, the drainage groove is trapezoidal, and both ends of the drainage groove are connected, the end with a larger opening of the drainage groove is away from the filter cartridge, and the end with a larger opening of the drainage groove is rotatably connected to the filter plate through an elastic torsion spring, and all the drainage grooves are connected to a thrust assembly, and the thrust assembly can adjust the position of all the drainage grooves; The filtering and separation mechanism includes a rotating shaft, a filter membrane plate, a water baffle plate and a magnetic block; the rotating shaft is rotatably connected to the inner end surface of the filter cartridge, and the rotating shaft is fixedly connected to two filter membrane plates and two water baffle plates, the filter membrane plates and the water baffle plates are arranged at intervals, and adjacent filter membrane plates and water baffle plates are perpendicular to each other, the top and bottom ends of the filter cartridge are fixedly provided with magnetic blocks, the sides of the filter membrane plates are provided with iron blocks, and the magnetic blocks can be attracted to the iron blocks, and when the magnetic blocks are fixed to the filter membrane plates, the connecting holes and the through holes at one end of the connecting pipe are respectively located on both sides of a water baffle plate.

2. The filtration system for a cooling circulating water system according to claim 1, characterized in that: The driving assembly comprises a sealing seat and an electric rod. The sealing seat is slidably and sealingly connected to the side wall of the diverter slot, and the electric rod is connected between the sealing seat and one end surface of the diverter slot.

3. The filtration system for a cooling circulating water system according to claim 1, characterized in that: The thrust assembly includes a guide rod, a stopper, a spring and an electric telescopic sleeve; The guide rod is fixedly connected to the side wall of the shell, each drainage groove is fixedly connected to a block, the guide rod passes through all the blocks, and springs are connected between all the blocks. One end of the guide rod is fixedly connected to an electric telescopic sleeve, and the telescopic end of the electric telescopic sleeve elastically abuts against a block on the outermost side.

4. The filtration system for a cooling circulating water system according to claim 1, characterized in that: The collecting assembly includes a second motor, a connecting shaft and a spiral mesh plate; The second motor is fixedly connected to one end face of the guide tube, the connecting shaft is fixedly connected to the output shaft of the second motor, a spiral mesh plate is spirally arranged along the length direction of the connecting shaft, and the spiral mesh plate is in contact with the inner wall of the guide tube.

5. The filtration system for a cooling circulating water system according to claim 3, characterized in that: The housing is electrically connected to a control system, and the control system includes a first pressure sensor, a second pressure sensor, a computer processor, and a PLC controller; A No. 1 pressure sensor is provided on the two guide plates of the guide sleeve away from the connecting hole, a No. 2 pressure sensor is provided between the stop block and the spring, the No. 1 pressure sensor, the No. 2 pressure sensor and the PLC controller are electrically connected to the computer processor, and the PLC controller is electrically connected to the regulating mechanism, the driving component and the drainage mechanism.

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