A stable industrial electric desalting device

Abstract

The application relates to the technical field of water treatment devices, and particularly discloses an industrial electric desalination device with stable operation, which comprises a plurality of electrodialyzers, water inlet branches respectively connected with the electrodialyzers and used for feeding fresh water, polar water outlet pipelines respectively connected with the electrodialyzers and used for discharging polar water, and water production outlet pipelines used for discharging purified water, and further comprises a water inlet main pipeline used for guiding the inlet of fresh water, a current collector fixed at the end of the water inlet main pipeline, and a shunt device detachably connected with the current collector, a plurality of shunt openings are formed in the shunt device and can be connected with the water inlet branches, a plurality of water discharge structures are arranged in the shunt device and respectively wrap the shunt openings and discharge water outward, and a driving structure is arranged in the current collector, so that the problems that the traditional electric desalination device is provided with a plurality of electrodialyzers, the water flow among the multiple electrodialyzers is unstable, and the ion exchange membrane in the electrodialyzers, the diaphragm and the baffle between the two poles are easily damaged when the water flow fluctuation amplitude is large are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water treatment devices, and particularly discloses an industrial electric desalination device with stable operation. BACKGROUND

[0002] Electric desalination refers to a process of combining electrodialysis and ion exchange technology, filling ion exchangers in a fresh water chamber of an electrodialyzer, and realizing electrodialysis, ion exchange desalination and ion exchange continuous electric regeneration under the action of a direct current electric field. The electric desalination device is a main device applied in a water treatment method for desalination and purification of industrial water.

[0003] The electric desalination device usually carries a plurality of electrodialyzers, takes the electrodialyzers as the main body of electric desalination operation, and is equipped with a water inlet pipeline, an electrode water outlet pipeline and a product water outlet pipeline. The water inlet pipeline is used for feeding the electrodialyzers with pretreated fresh water, the electrode water outlet pipeline is used for discharging electrode water, and the product water outlet pipeline is used for discharging purified water.

[0004] In the prior art, when the electric desalination device carries a plurality of electrodialyzers, a plurality of water supply pumps are usually matched with a plurality of water inlet pipelines to supply water to the electrodialyzers respectively. The fresh water supply flow among the electrodialyzers is unstable, and when the water flow in the electrodialyzers changes greatly, the diaphragm and the baffle between the ion exchange membrane and the two poles in the electrodialyzers are easily damaged.

[0005] Therefore, the inventor provides an industrial electric desalination device with stable operation in order to solve the above problems. SUMMARY

[0006] The purpose of the present application is to solve the problem that the conventional electric desalination device carries a plurality of electrodialyzers, the water flow among the electrodialyzers is unstable, and when the water flow fluctuates greatly, the diaphragm and the baffle between the ion exchange membrane and the two poles in the electrodialyzers are easily damaged.

[0007] In order to achieve the above purpose, the basic scheme of the present application provides an industrial electric desalination device with stable operation, which comprises a plurality of electrodialyzers, a water inlet branch for feeding fresh water and communicating with the electrodialyzers, an electrode water outlet pipeline for discharging electrode water and communicating with the electrodialyzers, and a product water outlet pipeline for discharging purified water. The device further comprises a water inlet main pipeline for introducing fresh water, a current collector fixed at the end of the water inlet main pipeline, and a flow divider detachably connected with the current collector. The flow divider is provided with a plurality of flow dividing openings communicating with the water inlet branches. A plurality of water discharge structures are arranged in the flow divider and wrap the flow dividing openings and discharge water outward. A driving structure is arranged in the current collector and is used for driving the water discharge structures uniformly.

[0008] Furthermore, the manifold includes a manifold pipe and manifold cover plates fixed to the inner sides of both ends of the manifold pipe. The main inlet pipe is connected to one side of the manifold pipe. The splitter includes a splitter pipe and splitter cover plates fixed to the inner sides of both ends of the splitter pipe. The splitter port is circumferentially opened on the splitter pipe. One end of the splitter pipe and one end of the manifold pipe are provided with a positioning connection structure. The splitter cover plate and the adjacent manifold cover plate are provided with a communication structure.

[0009] Furthermore, a positioning connection structure is provided between the ends of adjacent split pipes, and a communication structure is provided between the split cover plates of adjacent splitters.

[0010] Furthermore, the drainage structure includes a suction tank fixed to the inside of the diversion pipe and connected to the diversion port, several piston-linking rod mechanisms disposed inside the suction tank and continuously and alternately driven by a drive structure, and a partition plate fixed inside the suction tank for separating the piston-linking rod mechanisms. The suction tank has several water supply slots. Each piston of the piston-linking rod mechanism is provided with several first one-way valves that open only to the diversion port. A diversion plate is fixed inside the diversion port. A diversion flow hole is opened on the diversion plate corresponding to the first one-way valve. A second one-way valve in the same direction as the first one-way valve is fixed inside the diversion flow hole.

[0011] Furthermore, each of the suction barrels is equipped with two sets of piston-linkage mechanisms, and a partition is provided inside the suction barrel to separate the two sets of piston-linkage mechanisms.

[0012] Furthermore, the distributor also has several independent speed-matching structures relative to the diversion port, each driven by a drive structure and driving a piston-connecting rod mechanism.

[0013] Furthermore, the independent speed distribution structure includes a main drive shaft rotatably connected between the two end splitter covers, a secondary drive shaft rotatably connected to the inner side of one end splitter cover, and a driven ring platform rotatably connected to the inner side of one end splitter cover and driven to rotate by a drive structure. A gear transmission mechanism is provided between the main drive shaft and the secondary drive shaft, and a gear and rack transmission mechanism is provided between the secondary drive shaft and the driven ring platform. A cam for reciprocatingly driving the piston connecting rod mechanism is also fixed on the main drive shaft.

[0014] Furthermore, the suction barrel is slidably connected to the connecting rod in the piston-connecting rod mechanism, and the cam is slidably limited to the end of the connecting rod of the corresponding piston-connecting rod mechanism.

[0015] Furthermore, the drive structure includes a drive shaft that can extend into the manifold and the branch pipe, and a drive motor fixed to one side of the manifold. A driven pulley is rotatably connected to the outer side of the return cover plate at the free end of the manifold. The output shaft of the drive motor is fixedly connected to a driving pulley. A belt meshes between the driving pulley and the driven pulley. The drive shaft has several vertical grooves along the axial direction. Several synchronous rotating blocks are provided on the inner side of the driven pulley and are slidably connected to the vertical grooves. Several synchronous rotating rods are provided on the inner side of the driven ring platform and are slidably connected to the vertical grooves. The top of the drive shaft is provided with a closing structure that is rotatably connected to the connecting structure and closes the connecting structure.

[0016] Furthermore, the driven ring stage includes a master driven ring stage and a secondary driven ring stage that are detachably connected to each other.

[0017] The principle and effect of this solution are as follows:

[0018] 1. Compared with the prior art, the present invention supplies pretreated fresh water into the manifold through the main inlet channel. By installing a distributor on the manifold, the inlet branch channels are connected to the distributor outlets on the distributor, so that the fresh water is discharged into the inlet branch channels through the drainage structure and flows into the electrodialysis unit to complete the preparation of the required desalination water. The drainage structure is uniformly driven by the drive structure installed in the manifold, and the operating conditions of each drainage structure are the same, so as to achieve the purpose of uniformly discharging fresh water with a constant flow rate and flow rate into the electrodialysis unit. This solves the problem that in traditional electrodialysis devices with multiple electrodialysis units, the water flow rate between multiple electrodialysis units is unstable. When the water flow rate fluctuates greatly, it is easy to damage the ion exchange membrane and the partition and membrane between the two electrodes in the electrodialysis unit. This invention ensures the stability of the operation of the electrodialysis device.

[0019] 2. Compared with the prior art, the manifold of the present invention installs the diversion bucket through a connecting structure, and can also connect multiple diversion buckets through the connecting structure according to the increase in the number of electrodialysis units.

[0020] 3. Compared with the prior art, the external drainage process of the present invention is completed by a piston-linkage mechanism in conjunction with a suction tank, and the piston-linkage mechanism in the same suction tank is continuously and alternately driven by a drive structure. During this process, the pressure of the water flowing into the electrodialysis unit is determined by the flow rate, the flow rate of the water is determined by the moving speed of the connecting rod of the piston-linkage mechanism, and the moving speed of the connecting rod is determined by the drive structure. During the continuous and alternating reciprocating drive, fresh water can be continuously supplied into the electrodialysis unit at a certain flow rate, ensuring that the fresh water supply pressure is constant.

[0021] 4. Compared with the prior art, the present invention also has an independent speed-matching structure to drive the piston connecting rod mechanism in the same suction tank independently. By changing the transmission ratio of the gear transmission mechanism installed in the piston connecting rod structure, the speed of the cam driving the piston connecting rod mechanism on the main drive shaft can be changed, thereby changing the freshwater supply pressure and flow rate of the electrodialysis unit connected to that side, so as to meet the situation where different pressures of demineralized water are required in actual use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This paper shows a schematic diagram of the pipeline connection of an industrial electrostatic desalination device with stable operation according to an embodiment of this application;

[0024] Figure 2 A schematic diagram of the combiner and splitter of an industrial electric desalination device with stable operation according to an embodiment of this application is shown;

[0025] Figure 3 A schematic diagram of a combiner for a stable-operating industrial electric desalination device according to an embodiment of this application is shown;

[0026] Figure 4 A cross-sectional view of the combiner and splitter of an industrial electric desalination device with stable operation according to an embodiment of this application is shown;

[0027] Figure 5 A partial cross-sectional view of a shunt in an industrial electrostatic desalination device with stable operation, as proposed in an embodiment of this application, is shown.

[0028] Figure 6 A schematic diagram showing the connection of the combiner and the splitter of a stable industrial electric desalination device according to an embodiment of this application is illustrated. Detailed Implementation

[0029] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0030] The reference numerals in the accompanying drawings include: electrodialysis unit 1, main inlet pipe 2, branch inlet pipe 3, manifold 4, distributor 5, drive shaft 6, piston 7, connecting rod 8, closed platform 9, main drive shaft 10, auxiliary drive shaft 11, first ring platform 12, and second ring platform 13.

[0031] A stable industrial electrostatic desalination device, implementing, for example... Figure 1 As shown:

[0032] The system includes four sets of electrodialysis units 1, inlet branches connected to the left ends of the four sets of electrodialysis units 1 for supplying fresh water, electrode water outlet pipes connected to the right ends of the electrodialysis units 1 for discharging electrode water, and product water outlet pipes connected to the right ends of the electrodialysis units 1 for discharging purified demineralized water. The electrode water outlet pipes are sequentially connected and discharged outwards in a unified manner. In this embodiment, it also includes a main inlet branch for introducing pretreated fresh water, a manifold 4 installed at the end of the main inlet branch, and a distributor 5 installed on the manifold 4. The distributor 5 has four branch ports, and four drainage structures are installed inside the distributor 5, each covering one of the branch ports for discharging water outwards. A drive structure for uniformly driving the drainage structures is installed inside the manifold 4.

[0033] like Figure 2 , Figure 4 and Figure 5 As shown, the manifold 4 includes a manifold pipe and manifold cover plates bolted to the inner sides of both ends of the manifold pipe. The main inlet pipe 2 is connected to the right side of the manifold pipe. The distributor 5 includes a distributor pipe and distributor cover plates bolted to the inner sides of both ends of the distributor pipe. Four distributor ports are circumferentially opened on the distributor pipe. A positioning connection structure is provided between the bottom end of the distributor pipe and the top end of the manifold pipe, and a communication structure is provided between the distributor cover plates and the adjacent manifold cover plates.

[0034] The positioning and connection structure includes an inclined annular groove extending outward from the top of the manifold and an inclined annular platform integrally formed on the bottom of the branch pipe, with its inner wall conforming to the inclined annular groove. Four threaded holes are circumferentially formed between the inclined annular groove and the inclined annular platform. After aligning the threaded holes on the inclined annular groove and the inclined annular platform, the manifold and branch pipe can be positioned using bolts. In this embodiment, each branch pipe also has an inclined annular groove at its top, and the inclined annular platform at the bottom of the branch pipe can also conform to the inclined annular groove at the top of the branch pipe of the previous stage and be fixed with bolts.

[0035] The connecting structure includes a main connecting hole on the manifold cover plate at the top of the manifold, a first secondary connecting hole on the branch pipe cover plate at the bottom of the branch pipe, and a second secondary connecting hole on the branch pipe cover plate at the top of the branch pipe. A first receiving annular groove and a second receiving annular groove are respectively formed inside the main connecting hole and the second secondary connecting hole. Adjacent manifolds and branch pipes are connected by the main connecting hole and the first secondary connecting hole. When multiple branch pipes 5 are assembled, the second secondary connecting hole of the previous stage connects to the first secondary connecting hole of the next stage, achieving communication between adjacent branch pipes 5.

[0036] The drainage structure installed inside the diversion pipe includes a suction tank installed inside the diversion pipe and enclosing it, connecting to the diversion port; two sets of piston 7-linkage 8 mechanisms installed inside the suction tank and continuously and alternately driven by a drive structure; and a partition plate fixedly installed inside the suction tank to separate the piston 7-linkage 8 mechanisms. Several water supply slots are opened at the inner end of the suction tank, and two guide sliding holes are also opened at the inner end of the suction tank. The two chambers separated by the partition inside the suction tank are two cylindrical chambers of equal volume. The piston 7-linkage 8 mechanism includes a piston 7 sliding within the cylindrical chamber and a linkage 8 fixedly installed at the outer end of the piston 7 and correspondingly passing through the guide sliding holes. The outer wall of the piston 7 is tightly against the inner wall of the cylindrical chamber. Several first one-way valves, opening only to the diversion port, are also installed on the piston 7. Through the guide sliding holes, the cylindrical chamber inside the suction tank and the chamber inside the diversion pipe can be connected respectively. A flow divider plate is also fixedly installed inside the flow divider orifice. A flow divider orifice is opened on the flow divider plate corresponding to the position of the first check valve. A second check valve with the same direction as the first check valve is fixedly installed inside the flow divider orifice.

[0037] In this embodiment, as Figure 4 and Figure 5 As shown, the distributor 5 also has four sets of independent speed-matching structures, which are driven by the drive structure and used to drive the piston 7 and connecting rod 8 mechanism, respectively, relative to the number and position of the splitting ports.

[0038] The independent speed-matching structure includes a main drive shaft 10 that is rotatable and installed between the two end splitter covers, a secondary drive shaft 11 that is rotatable and installed inside the bottom splitter cover, and a driven ring platform that is installed inside the bottom splitter cover and driven to rotate by a drive structure. Specifically, the two end splitter covers each have a first rotating hole for mounting the end of the main drive shaft 10, and the bottom splitter cover has a second rotating hole for the end of the secondary drive shaft 11 to extend into. The inner side of the second rotating hole also has a first limiting ring groove. The end of the secondary drive shaft 11 is fixedly installed with a first limiting ring platform that can only slide within the first limiting ring groove. The bottom splitter cover also has a second limiting ring groove. In this embodiment, the driven ring platform is composed of a first ring platform 12 and a second ring platform 13. The bottom of the driven ring platform composed of the first ring platform 12 and the second ring platform 13 is also integrally formed with a second limiting ring platform that can only slide within the second limiting ring groove.

[0039] A rack is fixedly installed on the outer wall of the driven ring platform. A first transmission gear meshing with the rack is fixedly installed on the auxiliary transmission shaft 11, and a second transmission gear meshing with the first transmission gear is fixedly installed on the main transmission shaft 10. When the driven ring platform rotates, the rack drives the first transmission gear to rotate, which in turn drives the second transmission gear to rotate, thereby driving the main transmission shaft 10 to rotate. Two cams are also installed on the main transmission shaft 10. The two cams are symmetrically and alternately arranged, and the height of the two cams is equal to the height of the two connecting rods 8. A third limiting ring groove is opened on the side wall of each cam. A limiting protrusion that can only slide within the third limiting ring groove is integrally formed at the end of each cam. The third limiting ring groove and the limiting protrusion realize the sliding limiting connection between the cam and the corresponding end of the connecting rod 8. The rotation of the cam drives the connecting rod 8 and the piston 7 to slide in the guide slide hole and cylindrical cavity.

[0040] like Figure 3 , Figure 4 and Figure 5 As shown, the drive structure includes a drive shaft 6 and a drive motor mounted on the left side of the manifold via a support plate. The manifold cover at the bottom of the manifold has a shaft hole for the drive shaft 6 to extend into. The end of the drive shaft 6 extending into the manifold has an integrally formed sealing structure that can close the main connecting hole and the second auxiliary connecting hole. A vertical sliding groove is also formed on each side of the drive shaft 6 along its axial direction. The manifold cover at the bottom of the manifold has a fourth limiting ring groove and a rotatable driven pulley is installed thereon. The upper surface of the driven pulley has an integrally formed third limiting ring platform that can only slide within the fourth limiting ring groove. The output shaft of the drive motor is fixedly mounted with a driving pulley, and a belt meshes between the driving pulley and the driven pulley. A synchronous rotating block is integrally formed on the inner wall of the driven pulley and slidably installed within the vertical sliding groove.

[0041] In this embodiment, the drive shaft 6 extends into the diversion pipe, and the sealing structure at the top of the drive shaft 6 extends into the second auxiliary connecting hole of the diversion pipe and seals the second auxiliary connecting hole. A synchronous rotating rod, corresponding to a sliding groove, is integrally formed on the inner side of the first annular platform 12 and the second annular platform 13, respectively. The sealing structure includes a sealing platform 9 integrally formed on the top of the drive shaft 6 and a sealing strip fixedly installed on the outer wall of the sealing platform 9 and slidable within the first and second receiving annular grooves. The diameter of the sealing platform 9 is larger than the diameter of the drive shaft 6; therefore, when the drive shaft 6 extends into the diversion pipe, a gap is left between the main connecting hole and the first auxiliary connecting hole for fresh water to pass through.

[0042] Of course, such as Figure 6As shown, in other embodiments, the number of diverters 5 can be increased according to the increase in the number of electrodialysis units 1 assembled into an electro-desalination device. When the number of electrodialysis units 1 is insufficient to completely connect to the diverter ports, the remaining fresh water discharged from the diverter ports can be reintroduced into the manifold 4 through pipelines. Furthermore, in other embodiments, a third transmission gear can be added to the auxiliary drive shaft 11 to mesh with the second transmission gear. By changing the transmission ratio between the third transmission gear and the second transmission gear, the rotational speed of the main drive shaft 10 can be controlled accordingly, thereby independently controlling the flow rate of the fresh water flowing out of the diverter port.

[0043] When using this invention, depending on the number of installed splitters 5, the sealing platform 9 at the top of the drive shaft 6 is placed into the second auxiliary connecting hole at the top, and the sealing platform 9, the sealing strip and the second receiving ring groove are used to achieve sealing.

[0044] Then, the drive motor is started, which drives the belt transmission mechanism to drive the drive shaft 6, thereby realizing the rotation of the drive shaft 6. During the rotation of the drive shaft 6, the driven ring platform is driven to rotate through the fixed rotating rod.

[0045] The rotation of the driven ring platform is transmitted to each main drive shaft 10 through the rack and pinion transmission mechanism and the gear transmission mechanism, causing the main drive shaft 10 to rotate. The rotation of the main drive shaft 10 continuously drives the two connecting rods 8 and the two pistons 7 to slide alternately and reciprocally through the cam. During this movement:

[0046] Pretreated fresh water is continuously introduced into the manifold through the main inlet pipe 2. The fresh water enters the branch pipe through the main connecting hole and the first auxiliary connecting hole, and flows into the cylindrical chambers in the suction tank through the water supply slot on the suction tank. When the piston 7 moves away from the branch port, it enters the chamber between the piston 7 and the branch port through the first one-way valve. When the piston 7 slides towards the branch port, the first one-way valve restricts the fresh water to flow only into the second one-way valve and into the electrodialysis unit 1 through the branch pipe. During this process, since the main inlet pipe 2 is constantly replenishing fresh water into the branch pipe and the manifold, the fresh water will always fill the chambers on both sides of the piston 7. Therefore, the flow rate of the fresh water discharged into the electrodialysis unit 1 is the same each time. And because there are two sets of piston 7 connecting rod 8 mechanisms that move back and forth alternately, there will always be fresh water flowing into the electrodialysis unit 1. Furthermore, through the independent speed matching structure, the fresh water supply pressure and flow rate of the electrodialysis unit 1 connected to a certain side can be changed in a targeted manner.

[0047] By controlling the flow rate, volume, and pressure of the fresh water flowing into the electrodialysis unit 1, a stable operating environment is provided for the operation of the electrodialysis unit 1, eliminating the impact of changes in the flow rate and pressure of the fresh water on the stability of the operating state of the electrodialysis unit 1, and ensuring the stable operation of the electro-desalination device.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A stable industrial electro-deionization device, comprising a plurality of electrodialysis units, an inlet branch line connected to each electrodialysis unit for supplying fresh water, an electrode water outlet line connected to each electrodialysis unit for discharging electrode water, and a product water outlet line for discharging purified water, characterized in that: It also includes a main inlet for introducing fresh water, a manifold fixed to the end of the main inlet, and a diverter that is detachably connected to the manifold. The diverter has several diversion ports that can be connected to the inlet branches. The diverter has several drainage structures that wrap around the diversion ports and drain water outwards. The manifold has a drive structure for uniformly driving the drainage structures. The manifold includes a manifold pipe and manifold cover plates fixed to the inner sides of both ends of the manifold pipe. The main inlet pipe is connected to one side of the manifold pipe. The splitter includes a splitter pipe and splitter cover plates fixed to the inner sides of both ends of the splitter pipe. The splitter port is circumferentially opened on the splitter pipe. One end of the splitter pipe and one end of the manifold pipe are provided with a positioning connection structure. The splitter cover plate and the adjacent manifold cover plate are provided with a communication structure. The drainage structure includes a suction tank fixed to the inside of the diversion pipe and connected to the diversion port, several piston-linking rod mechanisms disposed in the suction tank and continuously and alternately driven by the driving structure, and a partition plate fixed in the suction tank for separating the piston-linking rod mechanisms. The suction tank has several water supply slots. Each piston of the piston-linking rod mechanism is provided with several first one-way valves that open only to the diversion port. A diversion plate is fixed in the diversion port. A diversion flow hole is opened on the diversion plate corresponding to the first one-way valve. A second one-way valve in the same direction as the first one-way valve is fixed in the diversion flow hole. The distributor also has several independent speed-matching structures relative to the diversion port, which are driven by a drive structure and drive the piston connecting rod mechanism respectively.

2. The industrial electro-desalination device with stable operation according to claim 1, characterized in that, A positioning connection structure is also provided between the ends of adjacent split pipes, and a communication structure is also provided between the split cover plates of adjacent splitters.

3. The industrial electro-desalination device with stable operation according to claim 1, characterized in that, Each of the suction barrels is equipped with two sets of piston-linkage mechanisms, and a partition is provided inside the suction barrel to separate the two sets of piston-linkage mechanisms.

4. The industrial electro-deionization device with stable operation according to claim 1, characterized in that, The independent speed control structure includes a main drive shaft rotatably connected between the two end splitter covers, a secondary drive shaft rotatably connected to the inner side of one end splitter cover, and a driven ring platform rotatably connected to the inner side of one end splitter cover and driven by a drive structure. A gear transmission mechanism is provided between the main drive shaft and the secondary drive shaft, and a gear and rack transmission mechanism is provided between the secondary drive shaft and the driven ring platform. A cam for reciprocating drive of the piston connecting rod mechanism is also fixed on the main drive shaft.

5. The industrial electro-desalination device with stable operation according to claim 4, characterized in that, The suction barrel is slidably connected to the connecting rod in the piston-connecting rod mechanism, and the cam is slidably limited to the end of the connecting rod of the corresponding piston-connecting rod mechanism.

6. The industrial electro-desalination device with stable operation according to claim 5, characterized in that, The drive structure includes a drive shaft that can extend into the manifold and the branch pipe, and a drive motor fixed to one side of the manifold. A driven pulley is rotatably connected to the outside of the return cover plate at the free end of the manifold. The output shaft of the drive motor is fixed to a driving pulley. A belt meshes between the driving pulley and the driven pulley. The drive shaft has several vertical grooves along the axial direction. Several synchronous rotating blocks are provided on the inner side of the driven pulley and are slidably connected to the vertical grooves. Several synchronous rotating rods are provided on the inner side of the driven ring platform and are slidably connected to the vertical grooves. The top of the drive shaft is provided with a closing structure that is rotatably connected to the connecting structure and closes the connecting structure.

7. The industrial electro-deionization device with stable operation according to claim 6, characterized in that, The driven ring stage includes a master driven ring stage and a secondary driven ring stage that are detachably connected to each other.

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