A resin online loading and unloading system and method

Abstract

This invention discloses an online resin loading and unloading system and method, comprising an ion exchanger, a first drain valve, an exhaust valve, a water supply pipe, a feed pipe, a discharge pipe, a feed valve, a discharge valve, a water tank, a water jet ejector, a second drain valve, a water jet pipe, a water jet pump, and a water jet outlet valve. The water jet ejector is connected to a conveying pipe, a discharge pipe, a first valve, a second valve, a first suction pipe, a second suction pipe, a third valve, and a fourth valve. A water inlet bypass, a fifth valve, a sixth valve, and a demineralized water inlet valve are also provided between the water tank and the water jet pipe. This online resin loading and unloading system enables timely online replenishment of resin lost during equipment operation. By employing a non-contact negative pressure suction method, the resin has minimal direct contact with mechanical parts, and damage to the physical properties of the resin is negligible, thereby extending the equipment's service life and the resin's lifespan.

Description

Technical Field

[0001] This invention relates to the field of resin loading and unloading technology for ion exchangers, and specifically to an online resin loading and unloading system and method. Background Technology

[0002] The anion and cation exchangers are filled with anion and cation granular resins. During daily use, some of the resin is lost. The usual operation is to shut down the ion exchanger for maintenance and manually fill it by opening the manhole on the upper side. This process requires a lot of manpower and a long downtime, which affects the continuous operation of the equipment.

[0003] When an ion exchanger needs to be shut down for maintenance due to an internal malfunction, all the resin filling inside must be manually removed through the lower side manhole. After maintenance, the lower manhole must be closed, and the resin must be manually refilled through the upper manhole. This process is time-consuming and labor-intensive, and the existing system cannot provide timely online replenishment of resin lost during equipment operation. Furthermore, replenishing or unloading resin particles using pumps can easily damage the physical properties of the resin, affecting equipment performance and resin lifespan. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by providing an online resin loading and unloading system and method.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An online resin loading and unloading system includes an ion exchanger. A first drain valve is located at the bottom of the ion exchanger, and an exhaust valve and a water supply pipe are located at the top of the ion exchanger. An inlet pipe and an outlet pipe are located on the side wall of the ion exchanger. An inlet valve is located on the inlet pipe, and an outlet valve is located on the outlet pipe. A water tank and a water jet ejector are also located near the ion exchanger. A second drain valve is located at the bottom of the ion exchanger and is connected to the water tank via a return water pipe. A water jet pipe connects the water tank and the water jet ejector, and the water jet pipe is equipped with a water jet pump and a water jet outlet valve. The water jet aerator is connected to a material conveying pipe and a material discharging pipe at its lower end. The material conveying pipe is equipped with a first valve and connected to the material inlet pipe, and the material discharging pipe is equipped with a second valve and connected to the water tank. The water jet aerator is equipped with a first suction pipe and a second suction pipe on its upper sides, respectively. The first suction pipe is equipped with a third valve and connected to the water tank, and the second suction pipe is equipped with a fourth valve and connected to the material outlet pipe. A water inlet bypass is also provided between the water tank and the water jet pipe. The water inlet bypass is equipped with a fifth valve and a sixth valve, and a demineralized water inlet valve is provided between the fifth valve and the sixth valve.

[0007] This online resin loading and unloading system enables timely online replenishment of resin lost during equipment operation. By adopting a non-contact negative pressure suction method, the resin has less direct contact with mechanical parts (the resin is in granular and transparent form), so damage to the physical properties of the resin is almost negligible, thereby extending the service life of the equipment and the resin.

[0008] The online loading and unloading method adopted by this system is easy to install and connect, and is applicable to the loading and unloading of resin for all similar equipment on site, making it highly adaptable. Moreover, this system does not require a lot of manpower and material resources during the resin loading and unloading process. It can be operated by a single person, is simple to operate, and takes little time, which greatly improves the efficiency and convenience of resin loading and unloading, and does not affect the normal operation of the equipment.

[0009] This online resin loading and unloading system does not require complex and numerous loading and unloading tools. Once the system is connected, it can switch between resin feeding and unloading simply by controlling the opening and closing of valves, without interference between the two processes. The pressurized water in the system's pipeline, especially the water jet ejector, can come from the water tank or be supplied via the demineralized water inlet valve, increasing the versatility of the water jet.

[0010] By adding a return water pipe between the water tank and the ion exchanger, a water circulation system can be formed, saving water resources. Furthermore, during resin unloading, the water discharged with the resin can also enter the water tank. The water tank can not only be used as a storage and supply container for water, but also to hold a mixture of resin and water.

[0011] Furthermore, the feed pipe is located above and the discharge pipe is located below, and the feed pipe and the discharge pipe are connected to form a first three-way pipe; the ends of the conveying pipe and the second suction pipe merge to form a second three-way pipe, and the first three-way pipe and the second three-way pipe are connected by a flexible pipe.

[0012] Furthermore, a third tee pipe is provided below the water jet pump, which is connected to the material conveying pipe and the material discharging pipe respectively.

[0013] Furthermore, a fourth three-way pipe is provided below the ion exchanger, which is connected to the first drain valve and the second drain valve respectively. The second drain valve and the return water pipe are connected by a flexible pipe.

[0014] Furthermore, the water tank has a dual-chamber structure, including a resin chamber and a water inlet chamber. A partition is provided between the resin chamber and the water inlet chamber, and a first filter screen is arranged at an incline above the partition. The first suction pipe extends into the resin chamber, the discharge pipe is connected to the resin chamber, and the water inlet bypass and the return water pipe are respectively connected to the water inlet chamber.

[0015] The partition divides the water tank into two spaces. Combined with the first filter, this separates the water in the inlet chamber from the resin in the resin chamber. This design allows for water exchange between the resin chamber and the inlet chamber without allowing resin particles to enter the inlet chamber, ensuring that the pressurized water pumped into the water jet pump is free of resin particles. The partition is lower than the height of the water tank but not less than half the depth of the water tank.

[0016] Furthermore, the resin chamber adopts a U-shaped bottom structure, and a discharge valve is provided at the bottom of the resin chamber. A drain valve is also provided at the bottom of the resin chamber and the water inlet chamber. An overflow port is also provided on the side of the resin chamber away from the water inlet chamber, and an inclined second filter screen is provided between the overflow port and the resin chamber.

[0017] The resin chamber (water tank mixing chamber) adopts a U-shaped bottom, which facilitates the collection of resin and is beneficial for resin extraction and unloading. The bottom of the water tank has a drain valve and a discharge valve, which can facilitate the transfer of resin and the discharge of wastewater during resin unloading.

[0018] The first and second filter screens are tilted at an angle of about 30 degrees, tilting inwards to achieve better filtration and prevent clogging (the resin sinks under its own weight and separates from the filter screen); both the first and second filter screens are fine mesh filters.

[0019] Furthermore, the resin chamber is also equipped with a feed funnel, and a water inlet pipe is connected between the feed funnel and the water jet pipe, and a water inlet ball valve is provided on the water inlet pipe.

[0020] The feed funnel is a conical funnel used to add resin raw materials to the water tank. The conical funnel is connected to the water inlet pipe, which allows water from the water jet pipe to flush the resin in the funnel. This not only replenishes the resin chamber with water, but also makes it easier and faster to add resin to the water tank, increasing the resin filling speed.

[0021] A resin online loading and unloading method, wherein the loading and unloading method controls the opening and closing relationships of the water jet outlet valve, the feed valve, the discharge valve, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, and the sixth valve, allowing the resin online loading and unloading system to switch between multiple resin feeding modes and multiple resin unloading modes.

[0022] Furthermore, one feeding method for the resin feeding mode includes the following steps:

[0023] (1) Open the fifth valve, replenish the liquid level in the water tank to overflow through the demineralized water inlet valve, and open the exhaust valve above the ion exchanger;

[0024] (2) Open the water jet outlet valve, the feed valve, the first valve, the third valve and the second drain valve. The water jet pump pumps water from the water tank and delivers it to the water jet air ejector. A negative pressure is generated in the mixing chamber of the water jet air ejector. The mixture of resin and water in the water tank is drawn into the mixing chamber of the water jet air ejector through the first suction pipe. After mixing, it is discharged into the conveying pipe through the diffuser of the water jet air ejector, and then enters the ion exchanger through the feed pipe.

[0025] (3) The mixture is separated by the water cap in the ion exchanger, the resin remains in the ion exchanger, and the water re-enters the water tank through the second drain valve and the return water pipe.

[0026] Another method of resin feeding differs from the above steps in that the source of the pressurized water entering the water jet ejector is different. The pressurized water from the demineralized water inlet valve is used. In this case, the sixth valve is opened and the water jet outlet valve is closed.

[0027] Furthermore, one method of resin unloading includes the following steps:

[0028] (1) Open the fifth valve, replenish the liquid level in the water tank to overflow through the demineralized water inlet valve, open the water supply pipe above the ion exchanger, and close the exhaust valve;

[0029] (2) Open the water jet outlet valve, the discharge valve, the second valve, the fourth valve, and the discharge valve below the water tank; close the feed valve, the first valve, the third valve, and the second drain valve. The water jet pump pumps water from the water tank and delivers it to the water jet ejector. A negative pressure is generated in the mixing chamber of the water jet ejector. The mixture of resin and water in the ion exchanger is drawn into the mixing chamber of the water jet ejector through the second suction pipe and the discharge pipe. Then, the mixture is discharged into the water tank through the discharge pipe via the diffuser of the water jet ejector. The discharge valve below the water tank transfers the resin discharged into the water tank.

[0030] Another method of resin unloading mode differs from the above steps in that the water source for the pressurized water entering the water jet ejector is different. The pressurized water comes from the demineralized water inlet valve. In this case, the sixth valve is opened and the water jet outlet valve is closed.

[0031] Pressurized working water from the jet pump (or demineralized water inlet valve) enters the nozzle of the jet ejector through the jet pipe. The nozzle converts the pressure energy of the pressurized water into velocity energy, and the high-speed water jet is ejected from the nozzle, causing air to be drawn into the chamber and creating a high vacuum. This draws out the resin-water mixture from the water tank (or ion exchanger) and they enter the diffuser tube of the jet ejector together. The water flow velocity slows down, the pressure gradually increases, and finally, at a pressure slightly higher than atmospheric pressure, it exits the diffuser tube and enters the ion exchanger (or water tank), completing the loading or unloading of resin. During this process, the resin has no direct contact with the mechanical parts, which prevents damage to the physical properties of the resin.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The online resin loading and unloading system can realize the timely online replenishment of resin lost during equipment operation. By adopting a non-contact negative pressure suction method, the resin has less direct contact with mechanical parts, and the damage to the physical properties of the resin is almost negligible, thereby extending the service life of the equipment and the service life of the resin; 2. The online loading and unloading method adopted by the system is easy to install and connect, and is applicable to the loading and unloading of resin for all similar equipment on site, with strong applicability; moreover, the system does not require a lot of manpower and material resources during the resin loading and unloading process, and can be operated by a single person. The operation is simple and time-saving, which greatly improves the efficiency and convenience of resin loading and unloading, and does not affect the normal operation of the equipment; 3. The online resin loading and unloading system only needs to use the opening and closing control of the valve to switch between resin feeding and unloading, and the two do not interfere with each other; 4. The addition of the return water pipe between the water tank and the ion exchanger can form a water circulation, and the water discharged with the resin during the resin unloading process can also enter the water tank to save water resources. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall layout of an online resin loading and unloading system according to the present invention;

[0034] Figure 2 This is a schematic diagram of resin feeding in an online resin loading and unloading system according to the present invention;

[0035] Figure 3 This is another schematic diagram of resin feeding in an online resin loading and unloading system according to the present invention;

[0036] Figure 4 This is a schematic diagram of resin unloading in an online resin loading and unloading system according to the present invention;

[0037] Figure 5 This is another schematic diagram of resin unloading in an online resin loading and unloading system according to the present invention;

[0038] In the diagram: 1. Ion exchanger; 2. First drain valve; 3. Exhaust valve; 4. Water supply pipe; 5. Water cap; 6. Feed pipe; 7. Discharge pipe; 8. Feed valve; 9. Discharge valve; 10. First tee pipe; 11. Water jet ejector; 12. Water tank; 1201. Resin chamber; 1202. Water inlet chamber; 1203. Baffle plate; 1204. First filter screen; 1205. Overflow port; 1206. Second filter screen; 13. Second drain valve; 14. Return water pipe; 15. Water jet pump; 16. Water jet outlet valve; 17. Water jet pipe; 18. Conveying pipe; 19. First valve; 20. Discharge pipe; 21. Second valve; 22. Second suction pipe; 23. Fourth valve; 24. First suction pipe; 25. Suction end of first suction pipe; 26. Third valve; 27. Water inlet bypass; 28. Fifth valve; 29. ​​Sixth valve; 30. Demineralized water inlet valve; 31. Second tee pipe; 32. Third tee pipe; 33. Fourth tee pipe; 34. Feed funnel; 35. Water inlet pipe; 36. Water inlet ball valve; 37. Discharge valve; 38. Drain valve. Detailed Implementation

[0039] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] like Figure 1As shown, an online resin loading and unloading system includes an ion exchanger 1. A first drain valve 2 is located below the ion exchanger 1. An exhaust valve 3 and a water supply pipe 4 are located at the top of the ion exchanger 1. An inlet pipe 6 and an outlet pipe 7 are located on the side wall of the ion exchanger 1. An inlet valve 8 is located on the inlet pipe 6, and an outlet valve 9 is located on the outlet pipe 7. A water tank 12 and a water jet ejector 11 are also located near the ion exchanger 1. A second drain valve 13 is located below the ion exchanger 1. The second drain valve 13 is connected to the water tank 12 via a return water pipe 14. A water jet pipe 17 connects the water tank 12 and the water jet ejector 11. A water jet pump 15 and a water jet outlet valve 16 are located on the water jet pipe 17 near the water tank 12. Below the water jet ejector 11 are a conveying pipe 18 and a discharging pipe 20. The conveying pipe 18 is equipped with a first valve 19 and connected to the inlet pipe 6. The discharging pipe 20 is equipped with a second valve 21 and connected to the water tank 12. Above the water jet ejector 11, on both sides are a first suction pipe 24 and a second suction pipe 22, respectively. The first suction pipe 24 is equipped with a third valve 26 and connected to the water tank 12. The second suction pipe 22 is equipped with a fourth valve 23 and connected to the outlet pipe 7. A water inlet bypass 27 is also provided between the water tank 12 and the water jet pipe 17. The water inlet bypass 27 is equipped with a fifth valve 28 and a sixth valve 29. A demineralized water inlet valve 30 is provided between the fifth valve 28 and the sixth valve 29.

[0042] This online resin loading and unloading system enables timely online replenishment of resin lost during equipment operation. By adopting a non-contact negative pressure suction method, the resin has less direct contact with mechanical parts (the resin is in granular and transparent form), so damage to the physical properties of the resin is almost negligible, thereby extending the service life of the equipment and the resin.

[0043] The online loading and unloading method adopted by this system is easy to install and connect, and is applicable to the loading and unloading of resin for all similar equipment on site, making it highly adaptable. Moreover, this system does not require a lot of manpower and material resources during the resin loading and unloading process. It can be operated by a single person, is simple to operate, and takes little time, which greatly improves the efficiency and convenience of resin loading and unloading, and does not affect the normal operation of the equipment.

[0044] This online resin loading and unloading system does not require complex and numerous loading and unloading tools. Once the system is connected, it can switch between resin feeding and unloading simply by controlling the opening and closing of valves, without interference between the two processes. The pressurized water in the pipeline of this system, especially the water jet ejector 11, can come from the water tank 12 or be supplied by the demineralized water inlet valve 30, increasing the versatility of the water jet.

[0045] By adding the return water pipe 14 between the water tank 12 and the ion exchanger 1, a water circulation system can be formed, saving water resources; moreover, during the resin unloading process, the water discharged with the resin can also enter the water tank 12. The water tank 12 can not only be used as a container for storing and supplying water, but also can hold a mixture of resin and water.

[0046] Furthermore, the feed pipe 6 is located above and the discharge pipe 7 is located below. The feed pipe 6 and the discharge pipe 7 are connected to form a first three-way pipe 10. The ends of the conveying pipe 18 and the second suction pipe 22 merge to form a second three-way pipe 31. The first three-way pipe 10 and the second three-way pipe 31 are connected by a flexible pipe.

[0047] Furthermore, a third tee pipe 32 is provided below the water jet air ejector 11, and the third tee pipe 32 is connected to the material conveying pipe 18 and the material discharge pipe 20 respectively.

[0048] Furthermore, a fourth three-way pipe 33 is provided below the ion exchanger 1. The fourth three-way pipe 33 is connected to the first drain valve 2 and the second drain valve 13 respectively. The second drain valve 13 and the return water pipe 14 are connected by a flexible pipe.

[0049] The installation of these tee pipes optimizes the connection between multiple pipes, making the pipe layout simpler and more aesthetically pleasing; the use of flexible connections makes it easy to adjust the connection distance between them, reducing the adverse effects of pipe deviations during system installation.

[0050] Furthermore, the water tank 12 has a dual-chamber structure, including a resin chamber 1201 and a water inlet chamber 1202. A partition 1203 is provided between the resin chamber 1201 and the water inlet chamber 1202. An inclined first filter screen 1204 is provided above the partition 1203. The first suction pipe 24 extends into the resin chamber 1201, and the suction end of the first suction pipe is set lower to facilitate resin absorption. The discharge pipe 20 is connected to the resin chamber 1201, and the water inlet bypass 27 and the return water pipe 14 are respectively connected to the water inlet chamber 1202.

[0051] The partition 1203 divides the water tank 12 into two spaces. Combined with the first filter 1204, this separates the water in the inlet chamber 1202 from the resin in the resin chamber 1201. This arrangement allows for water exchange between the resin chamber 1201 and the inlet chamber 1202 without allowing resin particles to enter the inlet chamber 1202, ensuring that the pressurized water pumped into the water jet pump 15 and the water jet aerator 11 is free of resin particles. The partition 1203 is lower than the height of the water tank, approximately one-third of the tank's depth.

[0052] Furthermore, the resin chamber 1201 adopts a U-shaped bottom structure, and a discharge valve 37 is provided at the bottom of the resin chamber 1201. A drain valve 38 is also provided at the bottom of the resin chamber 1201 and the water inlet chamber 1202. An overflow port 1205 is also provided on the side of the resin chamber 1201 away from the water inlet chamber 1202, and an inclined second filter screen 1206 is provided between the overflow port 1205 and the resin chamber 1201.

[0053] The resin chamber 1201 (water tank mixing chamber) adopts a U-shaped bottom, which facilitates the collection of resin and is beneficial for resin extraction and unloading. The bottom of the water tank has a drain valve and a discharge valve, which can facilitate the transfer of resin and the discharge of wastewater during resin unloading.

[0054] The first filter screen 1204 and the second filter screen 1206 are tilted at an angle of about 30 degrees, tilting inwards to form a better filtration effect and prevent the filter screen from clogging (the resin sinks and separates from the filter screen due to its own weight); both the first filter screen 1204 and the second filter screen 1206 are fine mesh filters.

[0055] Furthermore, the resin chamber 1201 is also provided with a feed funnel 34, and a water inlet pipe 35 is connected between the feed funnel 34 and the water jet pipe 17. A water inlet ball valve 36 is provided on the water inlet pipe 35.

[0056] The feed funnel 34 is a conical funnel used to add resin raw materials to the water tank. The conical funnel is connected to the water inlet pipe 35, which can use the water at the water jet pipe to flush the resin in the funnel. This can not only replenish the resin chamber 1201 with water, but also make it more convenient and faster to replenish the resin chamber 1201, thereby increasing the resin filling speed.

[0057] In another embodiment, the feed funnel 34 has an annular water channel inside, which is located at the top. The feed funnel has an outlet on its inner circumference, which is connected to the annular water channel. A grid is provided at the outlet. The water inlet pipe 35 is connected to the annular water channel and adds water to it. The water flows down the inner wall of the feed funnel from the outlet. This water inlet method avoids large-scale fluctuations of resin particles caused by water entering directly from above. The water flowing along the inner wall not only helps the resin move downward with the water, reducing resistance, but also reduces friction between the resin and the inner wall of the funnel, which is beneficial to the preservation of the resin's physical properties.

[0058] A resin online loading and unloading method, wherein the loading and unloading method controls the opening and closing relationships of the water jet outlet valve 16, the feed valve 8, the discharge valve 9, the first valve 19, the second valve 21, the third valve 26, the fourth valve 23, the fifth valve 28 and the sixth valve 29, so that the resin online loading and unloading system can switch between multiple resin feeding modes and multiple resin unloading modes.

[0059] Furthermore, such as Figure 2 As shown in the diagram, the solid black line indicates the pipe connection status. One method of resin feeding includes the following steps:

[0060] (1) Open the fifth valve 28 and close the sixth valve 29, replenish the liquid level in the water tank 12 to overflow through the demineralized water inlet valve 30, and open the exhaust valve 3 above the ion exchanger 1;

[0061] (2) Open the water jet outlet valve 16, the feed valve 8, the first valve 19, the third valve 26 and the second drain valve 13. The water jet pump 15 pumps water from the water tank 12 and delivers it to the water jet air ejector 11. A negative pressure is generated in the mixing chamber of the water jet air ejector 11. The mixture of resin and water in the water tank 12 is drawn into the mixing chamber of the water jet air ejector 11 through the first suction pipe 24. After mixing, it is discharged into the conveying pipe 18 through the diffuser of the water jet air ejector 11, and then enters the ion exchanger 1 through the feed pipe 6.

[0062] (3) The mixture is separated by the water cap 5 in the ion exchanger 1, the resin remains in the ion exchanger 1, and the water re-enters the water tank 12 through the second drain valve 13 and the return water pipe 14.

[0063] like Figure 3As shown, another method of resin feeding mode differs from the above steps in that the water source for the pressurized water entering the water jet ejector 11 is different. The pressurized water from the demineralized water inlet valve 30 is used. At this time, the sixth valve 29 is opened and the water jet outlet valve 16 is closed.

[0064] Furthermore, such as Figure 4 As shown, one method of resin unloading includes the following steps:

[0065] (1) Open the fifth valve 28 and close the sixth valve 29. Replenish the liquid level in the water tank 12 to overflow through the demineralized water inlet valve 30. Open the water supply pipe 4 above the ion exchanger 1 and close the exhaust valve 3.

[0066] (2) Open the water jet outlet valve 16, the discharge valve 9, the second valve 21, the fourth valve 23, and the discharge valve 37 below the water tank 12; close the feed valve 8, the first valve 19, the third valve 26, the second drain valve 13, and the first drain valve 2. The water jet pump 15 pumps water from the water tank 12 and delivers it to the water jet vacuum pump 11. A negative pressure is generated in the mixing chamber of the water jet vacuum pump 11. The mixture of resin and water in the ion exchanger 1 is drawn into the mixing chamber of the water jet vacuum pump 11 through the discharge pipe 7 via the second suction pipe 22. The mixture is then discharged into the water tank 12 through the discharge pipe 20 via the diffuser tube of the water jet vacuum pump 11. The discharge valve 37 below the water tank 12 transfers the resin discharged into the water tank.

[0067] like Figure 5 As shown, another method of resin unloading mode differs from the above steps in that the water source for the pressurized water entering the water jet ejector 11 is different. The pressurized water from the demineralized water inlet valve 30 is used. At this time, the sixth valve 29 is opened and the water jet outlet valve 16 is closed.

[0068] Pressurized working water from the water jet pump 15 (or the demineralized water inlet valve 30) enters the nozzle of the water jet ejector 11 through the water jet pipe 17. The nozzle converts the pressure energy of the pressurized water into velocity energy, and the water jet is ejected at high speed from the nozzle, causing air to be drawn into the chamber and creating a high vacuum. This draws out the resin and water mixture from the water tank 12 (or ion exchanger 1) and they enter the diffuser tube of the water jet ejector 11 together. The water flow speed slows down, the pressure gradually increases, and finally, at a pressure slightly higher than atmospheric pressure, it exits the diffuser tube and enters the ion exchanger 1 (or water tank 12), completing the loading or unloading of resin. During this process, the resin does not have direct contact with the mechanical parts, which can prevent the physical properties of the resin from being damaged.

[0069] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resin online loading and unloading system, comprising an ion exchanger, wherein a first drain valve is provided below the ion exchanger, and an exhaust valve and a water supply pipe are provided at the top of the ion exchanger, characterized in that, The ion exchanger has an inlet pipe and an outlet pipe on its side wall. The inlet pipe is equipped with an inlet valve, and the outlet pipe is equipped with an outlet valve. A water tank and a water jet pump are also located near the ion exchanger. A second drain valve is located below the ion exchanger and is connected to the water tank via a return water pipe. A water jet pipe connects the water tank and the water jet pump, and the water jet pipe is equipped with a water jet pump and a water jet outlet valve. A material conveying pipe and a discharge pipe are connected below the water jet pump. A first valve is provided and connected to the feed pipe; a second valve is provided on the discharge pipe and connected to the water tank; a first suction pipe and a second suction pipe are respectively provided on both sides above the water jet pump; a third valve is provided on the first suction pipe and connected to the water tank; a fourth valve is provided on the second suction pipe and connected to the discharge pipe; a water inlet bypass is also provided between the water tank and the water jet pipe; a fifth valve and a sixth valve are provided on the water inlet bypass; a demineralized water inlet valve is provided between the fifth valve and the sixth valve. The water tank has a dual-chamber structure, including a resin chamber and a water inlet chamber. A partition is provided between the resin chamber and the water inlet chamber, and a first filter screen is arranged at an angle above the partition. A first suction pipe extends into the resin chamber, a discharge pipe is connected to the resin chamber, and a water inlet bypass and a return water pipe are respectively connected to the water inlet chamber. A feeding funnel is also provided on the resin chamber, and a water inlet pipe is connected between the feeding funnel and the water jet pipe. A water inlet ball valve is provided on the water inlet pipe. Water from the water jet pipe is used to irrigate the funnel. The resin is flushed, which not only replenishes the resin chamber with water but also makes it easier to add resin to the resin chamber, increasing the resin filling speed. The inside of the feed funnel is provided with an annular water channel, which is located at the top. The inner circumference of the feed funnel is provided with a water outlet, which is connected to the annular water channel. A grid is provided at the water outlet. The water inlet pipe is connected to the annular water channel and adds water to the annular water channel. The water flows down the inner wall of the feed funnel from the water outlet, avoiding large-scale fluctuations of resin particles caused by water entering from above. By controlling the opening and closing relationships of the water jet outlet valve, the feed valve, the discharge valve, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, and the sixth valve, the online resin loading and unloading system can switch between multiple resin feeding modes and multiple resin unloading modes. The pressurized water entering the water jet ejector is sourced from the demineralized water inlet valve. At this time, the sixth valve is opened and the water jet outlet valve is closed, or the water jet pump draws water from the water tank and delivers it to the water jet ejector.

2. The resin online loading and unloading system according to claim 1, characterized in that, The feed pipe is located above and the discharge pipe is located below. The feed pipe and the discharge pipe are connected to form a first three-way pipe. The ends of the conveying pipe and the second suction pipe merge to form a second three-way pipe. The first three-way pipe and the second three-way pipe are connected by a flexible pipe.

3. The resin online loading and unloading system according to claim 1, characterized in that, The water jet pump is provided with a third T-junction below it, which is connected to the material conveying pipe and the material discharging pipe respectively.

4. The resin online loading and unloading system according to claim 1, characterized in that, The ion exchanger is provided with a fourth three-way pipe below it, which is connected to the first drain valve and the second drain valve respectively. The second drain valve is connected to the return water pipe by a flexible pipe.

5. The resin online loading and unloading system according to claim 1, characterized in that, The resin chamber adopts a U-shaped bottom structure. A discharge valve is provided at the bottom of the resin chamber. A drain valve is also provided at the bottom of the resin chamber and the water inlet chamber. An overflow port is also provided on the side of the resin chamber away from the water inlet chamber. A second filter screen is provided between the overflow port and the resin chamber.

6. A loading and unloading method for a resin online loading and unloading system according to any one of claims 1 to 5, characterized in that, One type of resin feeding method includes the following steps: (1) Open the fifth valve, replenish the liquid level in the water tank to overflow through the demineralized water inlet valve, and open the exhaust valve above the ion exchanger; (2) Open the water jet outlet valve, the feed valve, the first valve, the third valve and the second drain valve. The water jet pump pumps water from the water tank and delivers it to the water jet air ejector. A negative pressure is generated in the mixing chamber of the water jet air ejector. The mixture of resin and water in the water tank is drawn into the mixing chamber of the water jet air ejector through the first suction pipe. After mixing, it is discharged into the conveying pipe through the diffuser of the water jet air ejector, and then enters the ion exchanger through the feed pipe. (3) The mixture is separated by the water cap in the ion exchanger, the resin remains in the ion exchanger, and the water re-enters the water tank through the second drain valve and the return water pipe.

7. The loading and unloading method of the resin online loading and unloading system according to claim 6, characterized in that, One method of resin unloading includes the following steps: (1) Open the fifth valve, replenish the liquid level in the water tank to overflow through the demineralized water inlet valve, open the water supply pipe above the ion exchanger, and close the exhaust valve; (2) Open the water jet outlet valve, the discharge valve, the second valve, the fourth valve and the discharge valve below the water tank, and close the feed valve, the first valve, the third valve and the second drain valve. The water jet pump pumps water from the water tank and delivers it to the water jet pump. The mixing chamber of the water jet pump generates negative pressure. The mixture of resin and water in the ion exchanger is drawn into the mixing chamber of the water jet pump through the discharge pipe via the second suction pipe. The mixture is then discharged into the water tank through the discharge pipe via the diffuser of the water jet pump.

Images