U-shaped bed efficient ion exchanger

Abstract

A U-shaped bed efficient ion exchanger comprises an operation tank body A and an operation tank body B which are vertically arranged, the top of the operation tank body A is provided with an operation water inlet and distribution device which is also used as a regenerated waste liquid drainage mechanism, and the top of the operation tank body B is provided with an operation water outlet device which is also used as a regenerated water inlet and distribution mechanism. The inner cavities of the operation tank body A and the operation tank body B are filled with ion exchange resin to form an ion exchange resin bed, a communication tank body C for counteracting the gravity of resin in the operation tank body A and the operation tank body B is arranged between the bottoms of the operation tank body A and the operation tank body B, and a gravity counteracting resin bed is arranged in the communication tank body C. And under the condition of no top pressure measure, water production through fixed bed operation and high-flow-rate countercurrent regeneration of the fixed bed are successfully realized. And forward running water production and reverse regeneration are carried out at the optimal economic flow speed, so that the running and regeneration operations are simplified to the greatest extent, and the device has great significance in saving the water production cost, saving water and reducing emission.

Description

Technical Field

[0001] The utility model relates to water treatment equipment, in particular to a U-shaped bed high-efficiency ion exchanger. Background Art

[0002] At present, in the field of water treatment ion exchange desalination technology, people have been pursuing an ideal anion or cation exchanger, that is, an ion exchanger with countercurrent regeneration, a fixed resin bed and the most economical regeneration flow rate for ion exchange resin regeneration. In order to achieve this goal, people have adopted various top pressure methods such as air top pressure, water top pressure, mechanical top pressure and air bag top pressure to perform the most economical countercurrent regeneration of ion exchange resin. However, these top pressure countercurrent regeneration methods have many problems such as complex structure and cumbersome operation. Summary of the invention

[0003] The technical problem to be solved by the utility model is to address the deficiencies of the prior art and to propose a U-shaped bed high-efficiency ion exchanger which can easily realize countercurrent and high-flow rate regeneration without top pressure and has a fixed bed body.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions, a U-shaped bed high-efficiency ion exchanger, which is characterized by:

[0005] It includes a vertically arranged operating tank A and an operating tank B. The top of the operating tank A is provided with an operating water inlet and distribution device which also serves as a regeneration waste liquid drainage mechanism. The top of the operating tank B is provided with an operating water outlet device which also serves as a regeneration water inlet and distribution mechanism.

[0006] The inner cavities of the operating tank A and the operating tank B are filled with ion exchange resin to form an ion exchange resin bed.

[0007] A connecting tank body C is provided between the bottoms of the operating tank body A and the operating tank body B for offsetting the gravity of the resins in the two tank bodies, and a gravity offsetting resin bed is provided in the connecting tank body C.

[0008] The technical problem to be solved by the utility model can also be further achieved through the following technical scheme: the running tank body B is mounted on the outside of the running tank body A, the running tank body B is coaxially arranged on the running tank body A, the bottom of the running tank body B is arranged in an arc shape, the bottom of the running tank body A is an open opening, and the open opening of the running tank body A downwardly forms a connected tank body C with the arc-shaped bottom of the running tank body B.

[0009] The technical problem to be solved by the utility model can be further achieved through the following technical solution: a backwash water distribution device is arranged along the arc-shaped bottom of the running tank body B.

[0010] The technical problem to be solved by the utility model can also be further achieved through the following technical scheme. The operating tank body A and the operating tank body B are composed of an integral tank body separated by a central partition. The central partition is connected to the top of the tank body upward to divide the tank body into left and right parts. A connecting tank body C is formed between the lower end of the central partition and the bottom of the tank body.

[0011] The technical problem to be solved by the utility model can be further achieved through the following technical scheme: the operating tank body A is a main tank body, the operating tank body B is an auxiliary tank body, and the connecting tank body C formed by a connecting pipe is connected to each other.

[0012] The technical problem to be solved by the utility model can be further achieved by the following technical solution: an ion exchange resin partition with a double-headed water cap that can move up and down is provided in the operating tank A to separate the two ion exchange resins above and below the ion exchange resin partition from mixing.

[0013] The technical problem to be solved by the utility model can be further achieved through the following technical scheme: the upper part of the running tank body A may extend out of the upper head of the running tank body B, or may not extend out of the upper head of the running tank body B. The running tank body A may also use the upper head of the running tank body B as the upper head of the running tank body A.

[0014] Compared with the prior art, the utility model is a fixed bed ion exchanger that can be regenerated with high efficiency at the best economic flow rate without any top pressure measures. It uses the principle of gravity offset between two ion exchange resin beds that are interconnected at the bottom, and successfully realizes fixed bed operation water production and fixed bed high flow rate countercurrent regeneration without any top pressure measures. The U-bed high-efficiency ion exchanger operates forward to produce water and reversely regenerates at the best economic flow rate, which simplifies the operation and regeneration operations to the greatest extent, and is of great significance for saving water production costs and saving water and reducing emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (basic type);

[0016] Figure 2 This is a schematic diagram of the regeneration principle of a U-bed high-efficiency ion exchanger (basic type);

[0017] Figure 3 This is a schematic diagram of the operating principle of a U-shaped bed high-efficiency ion exchanger (type I);

[0018] Figure 4 It is a schematic diagram of the regeneration principle of a U-shaped bed high-efficiency ion exchanger (type I);

[0019] Figure 5 It is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (Type II);

[0020] Figure 6 It is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (Type III A);

[0021] Figure 7 It is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (Type III B);

[0022] Figure 8 It is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (Type IV);

[0023] Fig. 9 This is a schematic diagram of the operating principle of the U-bed high-efficiency ion exchanger (basic type). DETAILED DESCRIPTION

[0024] The specific technical scheme of the present invention is further described below. In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer and to facilitate those skilled in the art to further understand the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments, and do not constitute a limitation on the rights thereof. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] A U-shaped bed high-efficiency ion exchanger comprises a vertically arranged operating tank body A and an operating tank body B. An operating water inlet and water distribution device which also serves as a regeneration waste liquid drainage mechanism is provided on the top of the operating tank body A, and an operating water outlet device which also serves as a regeneration water inlet and water distribution mechanism is provided on the top of the operating tank body B.

[0026] The inner cavities of the operating tank A and the operating tank B are filled with ion exchange resin to form an ion exchange resin bed.

[0027] A connecting tank body C is provided between the bottoms of the operating tank body A and the operating tank body B for offsetting the gravity of the resins in the two tank bodies, and a gravity offsetting resin bed is provided in the connecting tank body C.

[0028] The above is the basic type.

[0029] The running tank body B is mounted on the outside of the running tank body A, and the running tank body B is coaxially arranged on the running tank body A. The bottom of the running tank body B is arranged in an arc shape, and the bottom of the running tank body A is an open opening. The open opening of the running tank body A downwardly forms a connected tank body C with the arc-shaped bottom of the running tank body B.

[0030] A backwash water distribution device is arranged along the arc-shaped bottom of the running tank body B.

[0031] An ion exchange resin partition with a double-headed water cap which can move up and down is arranged in the operating tank body A, so that two ion exchange resins above and below the ion exchange resin partition are separated and prevented from mixing.

[0032] The technical problem to be solved by the utility model can be further achieved through the following technical scheme: the upper part of the running tank body A may extend out of the upper head of the running tank body B, or may not extend out of the upper head of the running tank body B. The running tank body A may also use the upper head of the running tank body B as the upper head of the running tank body A.

[0033] The above is a U-shaped bed high efficiency ion exchanger (type I).

[0034] The operating tank body A and the operating tank body B are formed by an integral tank body separated by a central partition, the central partition is connected to the top of the tank body upward to separate the tank body into left and right parts, and a connecting tank body C is formed between the lower end of the central partition and the bottom of the tank body.

[0035] The above is a U-shaped bed high efficiency ion exchanger (Type II).

[0036] The operating tank body A is a main tank body, and the operating tank body B is an auxiliary tank body, and they are connected to each other through a connecting tank body C formed by a connecting pipe.

[0037] It can also be expanded and manufactured into U-shaped bed high-efficiency ion exchanger (Type III A) and U-shaped bed high-efficiency ion exchanger (Type III B).

[0038] like Figure 1 As shown in the schematic diagram of the operation principle of the U-shaped bed high-efficiency ion exchanger (basic type), the U-shaped bed high-efficiency ion exchanger (basic type) consists of a straight tank body 1 of section A, a tank body 2 connected to the bottom of section C, a straight tank body 3 of section B, an operating water inlet and water distribution device (also serving as a regeneration waste liquid drainage device) 4 located at the top of the straight tank body 1 of section A, an operating water outlet device (also serving as a regeneration water inlet and water distribution device) 5 located at the top of the straight tank body 3 of section B, ion exchange resins 6 filled in each tank body, an operating water inlet pipe 7, an operating water outlet pipe 8, a regeneration liquid inlet pipe 9, a regeneration waste liquid drainage pipe 10 and other components. The U-shaped bed high-efficiency ion exchanger (basic type) looks like the letter "U", so it is figuratively called a U-shaped bed high-efficiency ion exchanger.

[0039] When the U-shaped bed high-efficiency ion exchanger (basic type) is in operation and water production, the operating water enters from the operating water inlet pipe 7, is distributed by the operating water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and passes through the resin expansion space 11, and then evenly enters the ion exchange resin bed 6 for ion exchange purification. The purified water passes through the operating water outlet device (also serving as the regeneration water inlet distribution device) 5 and flows out from the operating water outlet pipe 8; during the operation and water production period, the thrust generated by the operating water flowing through the ion exchange resin bed 6 always pushes the ion exchange resin bed 6 to the top of the B-section straight tank body 3 and keeps the top space of the tank body 3 filled with ion exchange resin, so that the entire resin bed 6 is completely in a fixed state.

[0040] like Figure 2 As shown in the schematic diagram of the regeneration principle of the U-shaped bed high-efficiency ion exchanger (basic type), when the U-shaped bed high-efficiency ion exchanger (basic type) is regenerated, the regeneration liquid enters from the regeneration liquid inlet pipe 9, is distributed by the running water outlet device (also serving as the regeneration water inlet distribution device) 5 and passes through the resin expansion space 11, then enters and flows through the ion exchange resin bed 6 to regenerate the ion exchange resin, and the regeneration waste liquid passes through the running water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and flows out from the regeneration waste liquid drainage pipe 10.

[0041] At the beginning of regeneration of the U-shaped bed high-efficiency ion exchanger (basic type), the regeneration liquid flows through the ion exchange resin bed 6, which generates a thrust on the resin bed 6, pushing the entire resin bed 6 to the top space of the straight tank body 1 of section A, filling the resin expansion space 11 at the top of the straight tank body 1 of section A, and making the entire resin bed 6 always in a stable and immobile state during the regeneration period. Since the gravity of the ion exchange resin beds in the straight tank body 1 of section A and the straight tank body 3 of section B offsets each other through the ion exchange resin bed in the bottom connecting tank body 2 of section C, only a very small regeneration flow rate is needed to push the entire resin bed 6 to move and fill the resin expansion space 11 with resin, and the entire resin bed 6 is completely in a fixed state during the regeneration period. Therefore, the U-shaped bed high-efficiency ion exchanger (basic type) can be regenerated at the most economical regeneration flow rate without any top pressure measures, and its resin regeneration degree is the highest, the cycle water production is the largest, and the water output is the best.

[0042] In practical applications, in general, the top height of the resin bed in the straight tank body 1 of the A section of the U-bed high-efficiency ion exchanger (basic type) is slightly higher than the top height of the resin bed in the straight tank body 3 of the B section, so that the gravity of the resin bed in the straight tank body 1 of the A section is greater than the gravity of the resin bed in the straight tank body 3 of the B section, so that the top space of the resin bed in the straight tank body 3 of the B section is always filled, and the entire resin bed 6 is always in a fixed state during operation and intermittent operation.

[0043] In practical applications, in order to protect the gaps of the water caps or screens of the water distribution device and the water outlet device from being blocked by particles such as broken resin, some inert resin can be loaded on the top of the resin layer to protect the water caps or screens from being blocked.

[0044] In practical applications, if the inner diameters of the straight tank body 1 of section A, the bottom connecting tank body 2 of section C and the straight tank body 3 of section B are equal and the flow area is too large, a serious flow deviation phenomenon will occur during operation and regeneration, that is, the flow velocity on the inside is much higher than the flow velocity on the outside, affecting the efficiency of the ion exchanger. In order to prevent the occurrence of flow deviation phenomenon, the following can be adopted: Figure 8 The ion exchanger shown in the schematic diagram of the operating principle of the U-shaped bed high-efficiency ion exchanger (Type IV) uses a bottom resin connecting pipe 2 with a smaller diameter and a bottom water connecting pipe 15 to connect the bottoms of the tanks A1 and B3. The bottom resin connecting pipe 2 connects the resins of the tanks A1 and B3 together; the bottom water connecting pipe 15 connects the main pipes of the backwash water distribution device (also serving as the regeneration intermediate water distribution device) 14 of the tanks A1 and B3 together. During operation, the operating water enters the resin bed 6 through the operating water inlet pipe 7, the operating water inlet water distribution device (also serving as the regeneration waste liquid drainage device) 4 and the resin expansion space 11. After passing through the resin bed 6, most of the water enters the backwashing water inlet water distribution device (also serving as the regeneration intermediate water distribution device) 14 of the tank body A1 and enters the backwashing water inlet water distribution device (also serving as the regeneration intermediate water distribution device) 14 of the tank body B3 through the bottom water connecting pipe 15. After re-distribution, it enters and passes through the resin bed 6 of the tank body B3; the remaining small part of the water enters and passes through the resin bed 6 of the tank body B3 through the resin of the bottom resin connecting pipe 2, and the last two parts of water flow out through the operating water outlet device (also serving as the regeneration water inlet water distribution device) 5 and the operating water outlet pipe 8. At the beginning of operation, the flow rates of the two streams are controlled by the bottom water connecting valve 16, and part of the resin in the tank body A1 is transported to the tank body B3 through the bottom resin connecting pipe 2, and the tank body B3 is filled with resin, so that the resin beds 6 in the two tank bodies are in a fixed state. During regeneration, after the regeneration liquid enters and passes through the resin bed 6 in the tank body B3 through the regeneration liquid inlet pipe 9 and the running water outlet device (also serving as the regeneration water inlet distribution device) 5, most of the regeneration liquid enters the resin bed 6 in the tank body A1 through the backwash water inlet distribution device (also serving as the regeneration intermediate water distribution device) 14 of the tank body B3, the bottom water connecting pipe 15 and the backwash water inlet distribution device (also serving as the regeneration intermediate water distribution device) 14 of the tank body A1; the remaining small part of the regeneration liquid enters and passes through the resin bed 6 of the tank body A1 through the resin of the bottom resin connecting pipe 2, and the last two parts of the regeneration waste liquid are discharged through the running water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and the regeneration drainage pipe 10; at the beginning of regeneration, the flow rates of the two water flows are controlled by the bottom water connecting valve 16, and part of the resin in the tank body B3 is transported to the tank body A1 through the bottom resin connecting pipe 2, and the tank body A1 is filled with resin, so that the resin beds 6 in the two tank bodies are in a fixed state.

[0045] In practical applications, such as Fig. 9 As shown in the schematic diagram of the operating principle of the U-shaped bed high-efficiency ion exchanger (basic type), a backwash water distribution device 14 and a backwash water inlet pipe 13 can be set at the lower part of the A-section straight tank body 1 of the U-shaped bed high-efficiency ion exchanger (basic type).

[0046] Taking the U-bed high-efficiency ion exchanger (basic type) as the starting point, the gravity of the two resin beds is used to offset each other through the bottom connected resin to ensure the high-efficiency fixed bed countercurrent regeneration of the resin, and many other types of U-bed high-efficiency ion exchangers can be expanded and manufactured.

[0047] For example, a U-shaped high-efficiency ion exchanger (basic type) can be expanded to Figure 3 The U-shaped bed high-efficiency ion exchanger (I type) shown in the schematic diagram of the operation principle is an ion exchanger consisting of a tank body 1, a bottom connecting space 2, a central partition 3, an operation water inlet and water distribution device (also serving as a regeneration waste liquid drainage device) 4, an operation water outlet device (also serving as a regeneration water inlet and water distribution device) 5, an ion exchanger of ion exchange resin bed 6, an operation water inlet pipe 7, an operation water outlet pipe 8, a regeneration liquid inlet pipe 9, a regeneration waste liquid drainage pipe 10, a resin expansion space 11, a backwashing water inlet pipe 13, a backwashing water distribution device 14 and its auxiliary parts. The central partition 3 is coaxial with the tank body 1, and the inner and outer spaces of the central partition 3 and the bottom connecting space 2 below are filled with ion exchange resin 6 to form the entire ion exchange resin bed 6. The flow area in the central partition 3, the cylindrical flow area between the outer wall of the central partition 3 and the inner wall of the tank body 1, and the hemispherical flow area between the lower end of the central partition 3 and the lower head are basically equal. The operating water inlet and distribution device (also serving as the regeneration waste liquid drainage device) 4 is located at the top of the cylindrical space of the central partition 3, the operating water outlet device (also serving as the regeneration water inlet and distribution device) 5 is located at the top of the cylindrical space between the outer wall of the central partition 3 and the inner wall of the tank body 1, and the backwash water distribution device 14 is located at the bottom of the bottom connecting space 2.

[0048] Since the volume of the resin expands or shrinks before and after regeneration, the tank cannot be filled with resin, and a resin expansion space 11 must be left. In order to protect the water cap or screen from being blocked by broken resin, an appropriate amount of inert resin 12 can be filled in the space where the running water inlet and water distribution device (also serving as the regeneration waste liquid drainage device) 4 and the running water outlet device (also serving as the regeneration water inlet and water distribution device) 5 are located.

[0049] In essence, the principles of the U-bed high-efficiency ion exchanger (Type I) and the U-bed high-efficiency ion exchanger (basic type) are basically the same. The U-bed high-efficiency ion exchanger (Type I) is equivalent to being composed of several U-bed high-efficiency ion exchangers (basic type). The central partition 3 of the U-bed high-efficiency ion exchanger (Type I) is equivalent to the A-section straight tank body of the U-bed high-efficiency ion exchanger (basic type), the cylindrical space between the outer wall of the central partition 3 and the inner wall of the tank body 1 is equivalent to the B-section straight tank body of the U-bed high-efficiency ion exchanger (basic type), and the hemispherical tank body between the lower end of the central partition 3 and the lower head is equivalent to the C-section bottom connecting tank body of the U-bed high-efficiency ion exchanger (basic type).

[0050] When the U-shaped bed high-efficiency ion exchanger (type I) is in operation to produce water, the operating water enters from the operating water inlet pipe 7, is distributed by the operating water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and passes through the resin expansion space 11, and then evenly enters the ion exchange resin bed 6. After ion exchange purification through the entire ion exchange resin bed 6, it flows out through the operating water outlet device (also serving as the regeneration water inlet distribution device) 5 and the operating water outlet pipe 8 in sequence; the thrust generated by the operating water flowing through the ion exchange resin bed 6 pushes the entire ion exchange resin bed 6 to the top of the cylindrical space and fills the top of the cylindrical space. During operation, the entire resin bed 6 is always pressed against the top of the cylindrical space between the outer wall of the central partition 3 and the inner wall of the tank body 1, so that the entire ion exchange resin bed 6 is always in a stable fixed state.

[0051] like Figure 4 As shown in the schematic diagram of the regeneration principle of the U-shaped bed high-efficiency ion exchanger (type I), when the U-shaped bed high-efficiency ion exchanger (type I) is regenerated, the regeneration liquid enters from the regeneration liquid inlet pipe 9, distributes water through the running water outlet device (also serving as the regeneration water inlet distribution device) 5 and passes through the resin expansion space 11, and then evenly enters the ion exchange resin bed 6 to regenerate the ion exchange resin. The thrust generated by the regeneration liquid flowing through the entire ion exchange resin bed 6 pushes the entire ion exchange resin bed 6 to the upper resin expansion space 11 of the central partition 3, and fills the upper resin expansion space 11. During the regeneration period, the entire ion exchange resin bed 6 is always pressed against the top of the central partition 3 and is in a stable fixed state. The regeneration waste liquid is discharged through the running water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and the regeneration waste liquid drainage pipe 10.

[0052] Since the gravity of the cylindrical resin bed inside the central partition 3 and the cylindrical resin bed outside it mostly cancel each other out, a very low regeneration flow rate can easily push the entire ion exchange resin bed 6 to the top space of the central partition 3 and fill its top space with resin, so that the entire resin bed 6 is always in a fixed state during regeneration, so that the ion exchange resin can be regenerated efficiently at the optimal regeneration flow rate.

[0053] During the operation of the U-shaped bed high-efficiency ion exchanger (Type I), the upper resin bed layer of the central partition 3 has a filtering effect on the running water, so that the suspended matter in the running water is filtered in the upper resin bed layer. In order to reduce the running resistance, the suspended matter must be removed by backwashing. The backwash water distribution device 14 of the U-shaped bed high-efficiency ion exchanger (Type I) is located at the bottom of the tank body just below the central partition 3. After the operation is completed, the backwash water (or compressed air) enters from the backwash water inlet 13. After the backwash water is distributed (or distributed) by the backwash water distribution device 14, it flows through the resin bed in the central partition 3 and backwashes (or scrubs with compressed air) the resin in the central partition 3. After the backwash water (or compressed air) passes through the running water distribution device (also serving as the regeneration waste liquid drainage device) 4, it is discharged from the regeneration waste liquid drainage pipe 10.

[0054] According to actual needs, the top of the central partition 3 of the U-shaped bed high-efficiency ion exchanger (type I) can pass through the upper head of the tank body 1, or it can not extend out or retract into the upper head of the tank body 1.

[0055] In practical applications, the height of the resin bed in the central partition tube 3 can be made slightly higher than the height of the cylindrical resin bed on the outside, so that the weight of the resin bed in the central partition tube 3 is greater than the weight of the resin bed in the cylindrical shape. In this way, during operation and intermittent operation, the entire resin bed 6 is always pressed against the top of the cylindrical space between the outer wall of the central partition tube 3 and the inner wall of the tank body 1, so that the entire ion exchange resin bed 6 is always in a stable fixed state.

[0056] According to actual needs, the flow directions of the operating water inlet (regeneration drainage) and the operating water outlet (regeneration water inlet) of the U-shaped bed high-efficiency ion exchanger (type I) can also be reversed.

[0057] From the U-shaped bed high efficiency ion exchanger (basic type) can be expanded to manufacture Figure 5The U-shaped bed high-efficiency ion exchanger (Type II) shown in the schematic diagram of the operating principle is composed of a tank body 1, a central partition 3, an operating water inlet distribution device (also serving as a regeneration waste liquid drainage device) 4, an operating water outlet device (also serving as a regeneration water inlet distribution device) 5, a backwash water distribution device 14 and an ion exchange resin bed 6 located at the bottom of the tank body just below the central partition; the central partition 3 divides the upper and middle part of the tank body into two semi-cylindrical spaces whose tops are not connected, and ion exchange resins are filled in the left and right semi-cylindrical spaces of the central partition 3 and the lower hemispherical space 2 to form the entire ion exchange resin bed 6. The entire ion exchange resin bed 6 is composed of two semi-cylindrical resin beds and a hemispherical resin bed at the bottom; the flow areas of the left semi-cylindrical resin bed, the right semi-cylindrical resin bed and the lower hemispherical resin bed are basically equal, and the operating water inlet distribution device (also serving as a regeneration waste liquid drainage device) 4, the operating water outlet device (also serving as a The regeneration water inlet and water distribution device) 5 are respectively located at the top of the two semi-cylindrical resin beds, and the backwash water distribution device 14 is located at the bottom of the tank body; during operation water production, the operation water enters from the operation water inlet pipe 7, is distributed by the operation water inlet and water distribution device (also serving as the regeneration waste liquid drainage device) 4 at the top of the left semi-cylindrical resin bed and passes through the resin expansion space 11, enters and flows through the ion exchange resin bed 6, and performs ion exchange purification, and then flows out from the operation water outlet device (also serving as the regeneration water inlet and water distribution device) 5 at the top of the right semi-cylindrical resin bed; during regeneration, the flow direction of the regeneration liquid is opposite to that of the operation water, the regeneration liquid enters from the regeneration liquid inlet pipe 9, is distributed by the operation water outlet device (also serving as the regeneration water inlet and water distribution device) 5, flows through the resin bed 6 and pushes the resin bed 6 to move to the operation water inlet side and fills the resin expansion space 11 with resin, and the regeneration waste liquid flows out from the regeneration waste liquid drainage pipe 10 after passing through the operation water inlet and water distribution device (also serving as the regeneration waste liquid drainage device) 4.

[0058] From the U-shaped bed high efficiency ion exchanger (basic type) can be expanded to manufacture Figure 6The U-shaped bed high-efficiency ion exchanger (Type III A) shown in the schematic diagram of the operation principle is as follows: when the U-shaped bed high-efficiency ion exchanger (Type III A) starts to operate, the operating water enters from the operating water inlet pipe 7, is distributed by the operating water inlet distribution device (also serving as the regeneration waste liquid drainage device) 4 and passes through the resin expansion space 11, and then enters the ion exchange resin bed 6 for ion exchange purification. After that, a small part of the water is discharged from the resin delivery drainage pipe 17, and part of the resin in the tank body A1 is transported to the tank body B3, so that a resin expansion space 11 is formed above the resin bed in the tank body A1; the other part of the water flows out through the operating water outlet device (also serving as the regeneration water inlet distribution device and the backwash water inlet distribution device) 14 and the operating water outlet pipe 8; the U-shaped bed high-efficiency ion exchanger (Type III A) A) At the beginning of regeneration, a part of the regeneration liquid enters the tank body B3 from the regeneration liquid inlet pipe, and transports part of the resin in the tank body B3 to the tank body A1 through the bottom connecting pipe 2 to fill the resin expansion space 11 on the upper part of the tank body A1 with resin, so that the resin bed 6 in the tank body A1 is in a stable and fixed state during the regeneration period. After completing the resin transportation task, the regeneration liquid enters the resin bed layer 6 to regenerate the ion exchange resin; another part of the regeneration liquid enters from the regeneration liquid inlet pipe and is evenly distributed by the running water outlet device (also serving as the regeneration water inlet distribution device and the backwash water inlet distribution device) 5 to enter the ion exchange resin bed 6 to regenerate the ion exchange resin. Finally, the two parts of the regeneration wastewater are discharged from the regeneration wastewater drainage pipe 10 after passing through the running water inlet distribution device (also serving as the regeneration wastewater drainage device) 4. During the entire regeneration period, the flow rate of the regeneration liquid entering from the regeneration liquid inlet pipe and the regeneration liquid inlet pipe is adjusted to ensure that the tank body A1 is always filled with resin and the regeneration liquid flows evenly through the resin bed layer 6. During regeneration, the gravity of the resin in the tank B3 and the bottom connecting pipe 2 and the thrust generated by the flow of the regeneration liquid push the resin into the tank A1, so that the tank A1 is always filled with resin and the resin bed 6 in the tank 1 is always in a stable fixed state.

[0059] In essence, the principles of the U-shaped bed high-efficiency ion exchanger (Type III A) and the U-shaped bed high-efficiency ion exchanger (basic type) are basically the same. The tank A1 and tank B3 of the U-shaped bed high-efficiency ion exchanger (Type III A) are equivalent to the straight tank A section and straight tank B section of the U-shaped bed high-efficiency ion exchanger (basic type) respectively. Figure 7The U-bed high-efficiency ion exchanger (III-type B) shown in the schematic diagram of the operation principle of the U-bed high-efficiency ion exchanger (III-type B) is basically the same as the U-bed high-efficiency ion exchanger (III-type A), except that one of the bottom connecting pipes 2 is inside the tank body A1 and the other is outside the tank body A1. In addition, a circulating pump can also be installed between the regeneration liquid inlet pipe 9.1 and the regeneration liquid inlet pipe 9.2 of the U-bed high-efficiency ion exchanger (III-type A) and the U-bed high-efficiency ion exchanger (III-type B). During the regeneration period, the circulating pump runs to draw part of the regeneration liquid from the regeneration liquid inlet pipe 9.1 and transport it to the regeneration liquid inlet pipe 9.2. The thrust generated by the regeneration liquid flowing through the tank body B3 and the resin in the bottom connecting pipe 2 pushes the resin into the tank body A1, and the tank body A1 is always filled with resin, and the resin bed layer 6 in the tank body A1 is always in a fixed state.

Claims

1. A U-shaped bed high efficiency ion exchanger, characterized in that: It comprises an operating tank body A and an operating tank body B which are arranged vertically. An operating water inlet and distribution device which also serves as a regeneration waste liquid drainage mechanism is arranged on the top of the operating tank body A. An operating water outlet device which also serves as a regeneration water inlet and distribution mechanism is arranged on the top of the operating tank body B. Ion exchange resins are filled in the inner cavities of the operating tank bodies A and B to form an ion exchange resin bed. A connecting tank body C for offsetting the gravity of the resins in the two tank bodies is arranged between the bottoms of the operating tank bodies A and B. A gravity offset resin bed is arranged in the connecting tank body C.

2. The U-shaped bed high-efficiency ion exchanger according to claim 1 is characterized in that: The running tank body B is mounted on the outside of the running tank body A, and the running tank body B is coaxially arranged on the running tank body A. The bottom of the running tank body B is arranged in an arc shape, and the bottom of the running tank body A is an open opening. The open opening of the running tank body A downward forms a connected tank body C with the arc-shaped bottom of the running tank body B.

3. The U-shaped bed high-efficiency ion exchanger according to claim 2 is characterized in that: A backwash water distribution device is arranged along the arc-shaped bottom of the running tank body B.

4. The U-shaped bed high-efficiency ion exchanger according to claim 1, characterized in that: The operating tank body A and the operating tank body B are formed by an integral tank body separated by a central partition, the central partition is connected to the top of the tank body upward to separate the tank body into left and right parts, and a connecting tank body C is formed between the lower end of the central partition and the bottom of the tank body.

5. The U-shaped bed high-efficiency ion exchanger according to claim 1 is characterized in that: The operating tank body A is a main tank body, the operating tank body B is an auxiliary tank body, and they are connected to each other through a connecting tank body C formed by a connecting pipe.

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