Rotary distribution valve, use method thereof and continuous ion exchange equipment

Abstract

The invention discloses a rotary distribution valve, a using method thereof and continuous ion exchange equipment, the rotary distribution valve comprises a first valve part, a second valve part and a third valve part which are sequentially stacked in the axial direction, the first valve part is provided with a flow inlet hole, the second valve part is provided with a distribution groove and a communicating hole, and the third valve part is provided with a flow receiving groove and a flow outlet hole; the second valve part can rotate around the central axis relative to the first valve part and the third valve part, along with rotation of the second valve part, the same communicating hole can communicate with different flow receiving grooves in sequence, the same distributing groove can communicate with different flow inlet holes in sequence, and therefore a channel can be formed between the same flow outlet hole and the different flow inlet holes in the first valve part in sequence; the rotary distribution valve has the advantages that the rotary distribution valve is provided with the different flow outlet holes, so that fluid entering from the same flow inlet hole can sequentially flow out from the different flow outlet holes, the same fluid can be continuously distributed into different containers through the different flow outlet holes, continuous distribution of the fluid is achieved, and the rotary distribution valve is small in overall size, simple in overall structure, low in cost, few in leakage point and convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ion exchange, in particular to a rotary distribution valve and a method thereof, and a continuous ion exchange equipment. BACKGROUND

[0002] The continuous ion exchange equipment needs to continuously distribute several solutions to different containers in sequence. The rotary part of the fluid distribution valve on the market is connected with a plurality of pipelines. When rotating, the pipelines rotate together, resulting in a large rotating mass. In order to avoid the wear problem caused by the large rotating mass, a flat bearing and a rotating bearing are needed. The whole has problems of large volume, complex structure, easy leakage, difficult maintenance, high configuration cost, and limited application in narrow occasions.

[0003] Therefore, how to ensure that the fluid distribution valve has a small volume and a simple structure while realizing the continuous distribution function of several solutions, so as to reduce leakage points, facilitate maintenance and reduce cost, is a technical problem to be solved by those skilled in the art. SUMMARY

[0004] To solve the above technical problems, the present application provides a rotary distribution valve, which comprises a first valve part, a second valve part and a third valve part which are stacked in sequence along an axial direction, and the second valve part can rotate relative to the first valve part and the third valve part around a central axis.

[0005] The first valve part is provided with a plurality of inflow holes, one end of the inflow hole penetrates to the end face of the first valve part close to the second valve part, and the other end of the inflow hole communicates with the outside of the rotary distribution valve.

[0006] On the end face of the first valve part close to the second valve part, a plurality of first circumferences with different diameters centered on the central axis are each distributed with at least one inflow hole, and on the end face of the second valve part close to the first valve part, a plurality of second circumferences with different diameters centered on the central axis are each distributed with a distribution groove extending in the circumferential direction. The diameter of each second circumference is the same as the diameter of one first circumference, so that each distribution groove can communicate with at least one inflow hole.

[0007] The second valve part is provided with a plurality of communication holes, each distribution groove communicates with one end of at least one communication hole, and the other end of each communication hole penetrates to the end face of the second valve part close to the third valve part. On the end face of the second valve part close to the third valve part, the communication holes communicating with different distribution grooves are each distributed on different first radius lines at different angles, and the included angle between adjacent first radius lines is the same.

[0008] On an end face of the third valve part close to the second valve part, a plurality of second radius lines of different angles are each provided with a radial flow connection groove, and the third valve part is provided with a plurality of outlet holes, each of the flow connection grooves is in communication with one end of at least one of the outlet holes, and the other end of each of the outlet holes is in communication with the outside of the rotary distribution valve;

[0009] The second valve part can rotate to a plurality of conducting positions, and when the second valve part is in the conducting positions, each of the second radius lines is coincident with one of the first radius lines, so that each of the flow connection grooves is in communication with at least one of the communication holes.

[0010] In an embodiment of the rotary distribution valve, one end of the inlet hole in communication with the outside of the rotary distribution valve penetrates through an end face of the first valve part away from the second valve part or penetrates through an outer side face of the first valve part.

[0011] In an embodiment of the rotary distribution valve, on an end face of the first valve part close to the second valve part, all the inlet holes are distributed on a radius line of the same angle or at least two of the inlet holes are distributed on radius lines of different angles.

[0012] In an embodiment of the rotary distribution valve, one end of the outlet hole in communication with the outside of the rotary distribution valve penetrates through an end face of the third valve part away from the second valve part or penetrates through an outer side face of the third valve part.

[0013] In an embodiment of the rotary distribution valve, on an end face of the third valve part close to the second valve part, all the outlet holes are distributed on a same circle with the center axis as the center and of a same diameter or at least two of the outlet holes are distributed on circles with the center axis as the center and of different diameters.

[0014] In an embodiment of the rotary distribution valve, on an end face of the second valve part close to the first valve part, the communication holes in communication with different distribution grooves are each located on a circle with the center axis as the center and of a different diameter and are distributed in a spiral shape around the center axis.

[0015] In an embodiment of the rotary distribution valve, the distribution grooves are circular grooves or arc grooves with an arc less than 360°.

[0016] In an embodiment of the rotary distribution valve, the rotary distribution valve comprises a driving device, a pressing device and a control device, the control device can control the driving device to drive the second valve part to rotate, and the pressing device can apply axial pressure to the first valve part and / or the third valve part to make the first valve part and the third valve part axially press the second valve part.

[0017] One embodiment of the rotary distribution valve, the driving device comprises a power component and a transmission component, the power component is in transmission connection with the second valve part through the transmission component, the transmission component comprises a gear ring arranged outside the second valve part and a gear wheel engaged with the gear ring.

[0018] One embodiment of the rotary distribution valve, the pressing device adopts a pneumatic device or a hydraulic device.

[0019] One embodiment of the rotary distribution valve, the rotary distribution valve comprises a monitoring device for monitoring the rotation angle and rotation speed of the second valve part, the monitoring device is in communication connection with the control device to transmit a monitoring signal to the control device, so that the control device can control the driving device based on the monitoring signal.

[0020] One embodiment of the rotary distribution valve, the rotary distribution valve comprises a sealing device, the sealing device comprises: a first sealing element arranged between the second valve part and the first valve part, a second sealing element arranged between the second valve part and the second valve part, a third sealing element arranged at one end of the inlet hole communicating with the outside of the rotary distribution valve, and a fourth sealing element arranged at one end of the outlet hole communicating with the outside of the rotary distribution valve.

[0021] One embodiment of the rotary distribution valve, the rotary distribution valve comprises a center column, the first valve part, the second valve part and the third valve part are arranged outside the center column, the first valve part and the third valve part are fixedly arranged relative to the center column, and the second valve part can rotate around the central axis of the center column.

[0022] One embodiment of the rotary distribution valve, the rotary distribution valve comprises a base arranged at the bottom end of the center column, the cross-sectional area of the base is larger than that of the center column, and the base is used to be fixed with a mounting base.

[0023] The application also provides a use method of the rotary distribution valve, the use method comprises the following steps:

[0024] Rotating the second valve part, as the second valve part rotates, the same communication hole on the second valve part can be in turn communicated with different inlet grooves on the third valve part, and the same distribution groove on the second valve part can be in turn communicated with different inlet holes on the first valve part, so that the same outlet hole on the third valve part is in turn communicated with different inlet holes on the first valve part.

[0025] One embodiment of the use method of the rotary distribution valve, the use method further comprises the following steps:

[0026] Before the driving device drives the second valve part to rotate, the control device controls the pressing device to reduce the pressure on the first valve part and / or the third valve part to a target degree, and then controls the driving device to drive the second valve part to rotate, and after the second valve part rotates to a target angle, the control device controls the pressing device to increase the pressure on the first valve part and / or the third valve part until a target pressure is reached.

[0027] The application also provides a continuous ion exchange device, which comprises the rotating distribution valve.

[0028] The rotating distribution valve provided by the application can make the fluid coming from the same inlet hole flow out from different outlet holes in sequence by rotating the second valve part, so that the same fluid can be continuously distributed to different containers through different outlet holes, realizing continuous distribution of the fluid. In addition, the second valve part is not connected with external pipelines, so the volume and rotating mass of the pipelines are saved, and a bearing does not need to be arranged to avoid wear under large rotating mass, so the rotating distribution valve has small overall volume, simple overall structure, low cost, few leakage points and is convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A perspective view of part of the structure of an embodiment of the rotating distribution valve provided by the application;

[0030] Figure 2 A perspective view of the first valve part in the embodiment; Figure 1

[0031] A perspective view of the second valve part in the embodiment; Figure 3 Figure 2 A perspective view of the third valve part in the embodiment;

[0032] Figure 4 Figure 1 A perspective view of the first valve part in another embodiment of the rotating distribution valve provided by the application;

[0033] Figure 5 A perspective view of the first valve part in another embodiment of the rotating distribution valve provided by the application; Figure 1

[0034] A perspective view of the first valve part in another embodiment of the rotating distribution valve provided by the application; Figure 6

[0035] A perspective view of the second valve part used in cooperation with the first valve part in the embodiment; Figure 7

[0036] A perspective view of the second valve part used in cooperation with the first valve part in the embodiment; Figure 8 Figure 7 A perspective view of the third valve part used in cooperation with the first valve part in the embodiment;

[0037] Figure 9 Figure 7 ​​​​a top view of the third valve part used in cooperation with the second valve part in

[0038] Reference signs are explained as follows:

[0039] 100 first valve part, 101 inlet hole, 101a first inlet hole, 101b second inlet hole, 101c third inlet hole, 101d fourth inlet hole, 101e fifth inlet hole, 101f sixth inlet hole, 101g seventh inlet hole, 101h eighth inlet hole, 101I ninth inlet hole, 101j tenth inlet hole, 101k eleventh inlet hole, 101m twelfth inlet hole;

[0040] 200 second valve part, 201 distribution groove, 201a first distribution groove, 201b second distribution groove, 201c third distribution groove, 201d fourth distribution groove, 201e fifth distribution groove, 201f sixth distribution groove, 201g seventh distribution groove, 201h eighth distribution groove, 201I ninth distribution groove, 201j tenth distribution groove, 201k eleventh distribution groove, 201m twelfth distribution groove, 202 communication hole, 202a first communication hole, 202b second communication hole, 202c third communication hole, 202d fourth communication hole, 202e fifth communication hole, 202f sixth communication hole, 202g seventh communication hole, 202h eighth communication hole, 202I ninth communication hole, 202j tenth communication hole, 202k eleventh communication hole, 202m twelfth communication hole;

[0041] 300 third valve part, 301 connection groove, 301a first connection groove, 301b second connection groove, 301c third connection groove, 301d fourth connection groove, 301e fifth connection groove, 301f sixth connection groove, 301g seventh connection groove, 301h eighth connection groove, 301I ninth connection groove, 301j tenth connection groove, 301k eleventh connection groove, 301m twelfth connection groove, 302 outlet hole, 302a first outlet hole, 302b second outlet hole, 302c third outlet hole, 302d fourth outlet hole, 302e fifth outlet hole, 302f sixth outlet hole, 302g seventh outlet hole, 302h eighth outlet hole, 302I ninth outlet hole, 302j tenth outlet hole, 302k eleventh outlet hole, 302m twelfth outlet hole;

[0042] 400 gear ring; 500 center column; 600 base. DETAILED DESCRIPTION

[0043] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0044] As Figures 1-4As shown, the rotary distribution valve provided in this application includes a first valve section 100, a second valve section 200, and a third valve section 300 stacked sequentially along the axial direction (i.e., the extension direction of the central axis C in the figure). The second valve section 200 is rotatable relative to the first valve section 100 and the third valve section 300 about the central axis C.

[0045] like Figure 2 As shown, the first valve section 100 is provided with a plurality of inlet holes 101. In this application, "a plurality of" means two or more. One end of each inlet hole 101 extends to the end face of the first valve section 100 near the second valve section 200 (i.e., Figure 2 The lower end face of the first valve section 100 (viewed from the outside). The other end of each inlet hole 101 communicates with the outside of the rotary distribution valve. In this embodiment, the end of each inlet hole 101 that communicates with the outside of the rotary distribution valve extends to the end face of the first valve section 100 away from the second valve section 200 (i.e., the lower end face of the first valve section 100). Figure 2 (Viewed from the lower end face of the first valve section 100). Alternatively, it can be as follows: Figure 5 As shown, one end of each inlet orifice 101 that communicates with the outside of the rotary distribution valve extends to the outer surface of the first valve section 100. Alternatively, one end of some inlet orifices 101 that communicates with the outside of the rotary distribution valve may extend to the end face of the first valve section 100 away from the second valve section 200, and another end of some inlet orifices 101 that communicates with the outside of the rotary distribution valve may extend to the outer surface of the first valve section 100.

[0046] One end face of the first valve section 100 near the second valve section 200 (i.e. Figure 2 From a visual perspective, on the lower end face of the first valve section 100, at least one inlet hole 101 is distributed on each of multiple circles of different diameters (defined as the first circle) centered on the central axis C. In this embodiment, as shown... Figure 3 As shown, each of the four circles of different diameters centered on the central axis C has a flow inlet 101, and these four flow inlets 101 (i.e., all flow inlets 101) are located on a radius line at the same angle. Alternatively, it can be as follows: Figure 7 As shown, not all inlet holes 101 are located on the same angular radius line. Specifically, all inlet holes 101 can be located on angular radius lines of different angles, or some inlet holes 101 can be located on the same angular radius line and some inlet holes 101 can be located on angular radius lines of different angles. For example, Figure 7 The first inlet hole 101a and the second inlet hole 101b are located on the same radius line, while the other inlet holes 101 (the third inlet hole 101c to the twelfth inlet hole 101m) are located on the radius lines at different angles.

[0047] like Figure 4As shown, a plurality of circumferences (defined as second circumferences) of different diameters, each of which is centered on the central axis, are distributed with a circumferential distribution groove 201 on the end face of the one end of the second valve part 200 close to the first valve part 100. In the embodiment, the distribution groove 201 is a circular groove arranged in the whole circumference. Alternatively, the distribution groove 201 can be an arc-shaped groove arranged in a part of the circumference. Figure 8 As shown, the distribution groove 201 is an arc-shaped groove arranged in a part of the circumference, and the arc of the arc-shaped groove is less than 360°.

[0048] The diameter of each second circumference is the same as that of a first circumference, so that each distribution groove 201 can be in communication with at least one inflow hole 101. In the embodiment, four distribution grooves 201 and four inflow holes 101 are arranged, and each distribution groove 201 is in communication with one inflow hole 101. Specifically, the diameter of the second circumference where the first distribution groove 201a is located is the same as that of the first circumference where the first inflow hole 101a is located, so that the first distribution groove 201a is in communication with the first inflow hole 101a; the diameter of the second circumference where the second distribution groove 201b is located is the same as that of the first circumference where the second inflow hole 101b is located, so that the second distribution groove 201b is in communication with the second inflow hole 101b; the diameter of the second circumference where the third distribution groove 201c is located is the same as that of the first circumference where the third inflow hole 101c is located, so that the third distribution groove 201c is in communication with the third inflow hole 101c; and the diameter of the second circumference where the fourth distribution groove 201d is located is the same as that of the first circumference where the fourth inflow hole 101d is located, so that the fourth distribution groove 201d is in communication with the fourth inflow hole 101d. Alternatively, a single distribution groove 201 can be in communication with multiple inflow holes 101.

[0049] Moreover, since the diameter of each second circumference is the same as that of a first circumference, the inflow hole 101 in communication with each distribution groove 201 is unchanged in the whole rotation stroke of the second valve part 200. For example, in the embodiment, the inflow hole 101 in communication with the first distribution groove 201a is always the first inflow hole 101a, the inflow hole 101 in communication with the second distribution groove 201b is always the second inflow hole 101b, the inflow hole 101 in communication with the third distribution groove 201c is always the third inflow hole 101c, and the inflow hole 101 in communication with the fourth distribution groove 201d is always the fourth inflow hole 101d.

[0050] It should be noted that when the distribution groove 201 is an arc-shaped groove, in the process of rotating 360° of the second valve part 200, there is a period of time when the inflow hole 101 is located outside the arc of the distribution groove 201, so that the inflow hole 101 is not in communication with the distribution groove 201. Therefore, when there is a need for intermittent communication, the arc-shaped groove design can be adopted. If there is no need for the period of time when the inflow hole 101 is not in communication with the distribution groove 201 in actual application, the period of time can be avoided by limiting the rotation stroke of the second valve part 200.

[0051] As shown in Figure 4 Fig. 2, the second valve part 200 is provided with a plurality of communication holes 202, each distribution groove 201 communicates with one end of at least one communication hole 202, and the other end of each communication hole 202 penetrates to the end face of the second valve part 200 close to the third valve part 300. In this embodiment, four distribution grooves 201 and four communication holes 202 are provided, and each distribution groove 201 communicates with one end of one communication hole 202. Alternatively, a single distribution groove 201 can also communicate with one end of multiple communication holes 202 at the same time.

[0052] On the end face of the second valve part 200 close to the third valve part 300, the communication holes 202 communicating with different distribution grooves 201 are respectively distributed on different angle radius lines (defined as first radius lines D), and the included angle between adjacent first radius lines D is the same. In this embodiment, the four communication holes 202 communicating with the four distribution grooves 201 are respectively distributed on four different angle radius lines.

[0053] As shown in Figure 5 On the end face of the third valve part 300 close to the second valve part 200, a plurality of different radius lines (defined as second radius lines E) are respectively distributed with one radial flow groove 301, and the included angle between adjacent second radius lines E is the same. In this embodiment, four flow grooves 301 are provided.

[0054] The second valve part 200 of the rotary distribution valve can be rotated to a plurality of conducting positions, and each second radius line E is respectively coincident with one first radius line when the second valve part 200 is located in the conducting position. In this way, each flow groove 301 is respectively communicated with the communication hole 202 communicating with different distribution grooves 201 when the second valve part 200 is located in the conducting position.

[0055] As shown in Figure 5As shown, the third valve portion 300 is provided with a plurality of outlet holes 302, each of the outlet holes 302 is in communication with one end of at least one of the outlet holes 302, and the other end of the outlet holes 302 is in communication with the outside of the rotary distribution valve. In this embodiment, the end of each of the outlet holes 302 in communication with the outside of the rotary distribution valve penetrates to the end face of the third valve portion 300 away from the second valve portion 200. Alternatively, the end of each of the outlet holes 302 in communication with the outside of the rotary distribution valve can also penetrate to the outer side face of the third valve portion 300. Alternatively, part of the end of each of the outlet holes 302 in communication with the outside of the rotary distribution valve can penetrate to the end face of the third valve portion 300 away from the second valve portion 200, and part of the end of each of the outlet holes 302 in communication with the outside of the rotary distribution valve can penetrate to the outer side face of the third valve portion 300. In this embodiment, on the end face of the third valve portion 300 close to the second valve portion 200, all of the outlet holes 302 are distributed on the same diameter circle with the center axis C as the center. Alternatively, as shown in FIG. 4, at least two of the outlet holes 302 can be distributed on different diameter circles with the center axis C as the center. Figure 9 As shown, at least two of the outlet holes 302 are distributed on different diameter circles with the center axis C as the center.

[0056] The working process of the rotary distribution valve will be described below in detail with the embodiment shown in FIG. 1 as an example. Figures 1-5 As shown in FIG. 1, the working process of the rotary distribution valve is as follows:

[0057] In this embodiment, the second valve portion 200 has four conductive positions.

[0058] When the second valve portion 200 is rotated to the first conductive position, the first flow connecting groove 301a is in communication with the first communication hole 202a in communication with the first distribution groove 201a, so that the fluid from the first inlet hole 101a flows out from the first outlet hole 302. The second flow connecting groove 301b is in communication with the second communication hole 202b in communication with the second distribution groove 201b, so that the fluid from the second inlet hole 101b flows out from the second outlet hole 302. The third flow connecting groove 301c is in communication with the third communication hole 202c in communication with the third distribution groove 201c, so that the fluid from the third inlet hole 101c flows out from the third outlet hole 302. The fourth distribution groove 201d is in communication with the fourth communication hole 202d in communication with the fourth distribution groove 201d, so that the fluid from the fourth inlet hole 101d flows out from the fourth outlet hole 302.

[0059] When rotated to the second on position, the first connecting groove 301a communicates with the fourth communicating hole 202d which communicates with the fourth distribution groove 201d, so that the fluid from the fourth inlet hole 101d flows out from the first outlet hole 302. The second connecting groove 301b communicates with the first communicating hole 202a which communicates with the first distribution groove 201a, so that the fluid from the first inlet hole 101a flows out from the second outlet hole 302. The third connecting groove 301c communicates with the second communicating hole 202b which communicates with the second distribution groove 201b, so that the fluid from the second inlet hole 101b flows out from the third outlet hole 302. The fourth distribution groove 201d communicates with the third communicating hole 202c which communicates with the third distribution groove 201c, so that the fluid from the third inlet hole 101c flows out from the fourth outlet hole 302.

[0060] When rotated to the third on position, the first connecting groove 301a communicates with the third communicating hole 202c which communicates with the third distribution groove 201c, so that the fluid from the third inlet hole 101c flows out from the first outlet hole 302. The second connecting groove 301b communicates with the fourth communicating hole 202d which communicates with the fourth distribution groove 201d, so that the fluid from the fourth inlet hole 101d flows out from the second outlet hole 302. The third connecting groove 301c communicates with the first communicating hole 202a which communicates with the first distribution groove 201a, so that the fluid from the first inlet hole 101a flows out from the third outlet hole 302. The fourth distribution groove 201d communicates with the second communicating hole 202b which communicates with the second distribution groove 201b, so that the fluid from the second inlet hole 101b flows out from the fourth outlet hole 302.

[0061] It can be seen that the rotating distribution valve provided by the application can make the fluid from the same inlet hole 101 flow out from different outlet holes 302 in turn by rotating the second valve part 200, so that the same fluid can be continuously distributed to different containers through different outlet holes 302, realizing continuous distribution of the fluid. Moreover, the second valve part 200 does not need to be connected with an external pipeline, so that the volume and rotating mass of the pipeline are saved, and a bearing does not need to be arranged to avoid wear under large rotating mass, so that the rotating distribution valve has small overall volume, simple overall structure, low cost, few leakage points and is convenient to maintain.

[0062] Specifically, when the inlet hole 101 communicates with the end face of the first valve part 100 far away from the second valve part 200, the inlet hole 101 can be arranged to extend in the axial direction, so that the length of the inlet hole 101 is short, which is beneficial to reducing flow resistance and easy to process.

[0063] Specifically, when the end of the outlet hole 302, which is in communication with the outside of the rotary distribution valve, penetrates to the end face of the third valve part 300 away from the second valve part 200, the outlet hole 302 can be arranged to extend in the axial direction, so that the length of the outlet hole 302 is relatively short, which is beneficial to reducing the flow resistance and facilitating processing.

[0064] Specifically, as shown in FIG. 2, the communication holes 202, which are in communication with different distribution grooves 201, can be respectively located on different circumferences with the center axis C as the center and distributed in a spiral shape around the center axis C on the end face of the second valve part 200 close to the first valve part 100. Figure 7

[0065] Further, the rotary distribution valve provided by the present application can further comprise a driving device, a pressing device and a control device. The control device can control the driving device to drive the second valve part 200 to rotate. The pressing device can apply pressure to the first valve part 100 and / or the third valve part 300, so that the first valve part 100 and the third valve part 300 are axially pressed against the second valve part 200, thereby realizing sealing by the pressing force between the valve parts.

[0066] Specifically, the driving device comprises a power part and a transmission part. The power part is in transmission connection with the second valve part 200 through the transmission part. The power part can be an electric motor, a hydraulic motor or the like. In the illustrated embodiment, the transmission part comprises a gear ring 400 arranged outside the second valve part 200 and a gear wheel in meshing connection with the gear ring 400, which is not shown in the figure. Such a transmission structure is simple and reliable. Of course, in actual implementation, the structure of the transmission part is not limited thereto, as long as the power part can convert the power into the rotary motion of the second valve part 200.

[0067] Specifically, the pressing device can adopt a pneumatic device or a hydraulic device.

[0068] Further, the rotary distribution valve can comprise a monitoring device for monitoring the rotation angle and rotation speed of the second valve part 200. The monitoring device is in communication connection with the control device, so as to transmit a monitoring signal to the control device, thereby enabling the control device to control the driving device based on the monitoring signal.

[0069] Further, the rotary distribution valve comprises a sealing device, which comprises: a first sealing member arranged between the second valve part 200 and the first valve part 100, a second sealing member arranged between the second valve part 200 and the third valve part 300, a third sealing member arranged at the end of the inlet hole 101 in communication with the outside of the rotary distribution valve, and a fourth sealing member arranged at the end of the outlet hole 302 in communication with the outside of the rotary distribution valve. The sealing member can be made of polytetrafluoroethylene material. Of course, the first sealing member and the second sealing member can also be omitted, so that the dynamic sealing between the first valve part 100 and the second valve part 200 and between the second valve part 200 and the third valve part 300 is realized by precise face contact.​

[0070] Specifically, the first valve part 100, the second valve part 200 and the third valve part 300 are preferably made of wear-resistant and corrosion-resistant materials, such as stainless steel, titanium alloy and other metal materials, so as to improve the durability and strength of the assembly.

[0071] Further, the rotary distribution valve can include a center column 500, the first valve part 100, the second valve part 200 and the third valve part 300 are arranged outside the center column 500, the first valve part 100 and the third valve part 300 are fixedly arranged relative to the center column 500, and the second valve part 200 can rotate around the central axis of the center column 500. The center column 500 is arranged to facilitate the first valve part 100, the second valve part 200 and the third valve part 300 to maintain a high coaxiality.

[0072] Further, the rotary distribution valve can include a base 600 arranged at the bottom end of the center column 500, the cross-sectional area of the base 600 is greater than that of the center column 500, and the base 600 is used to be fixed with the installation foundation to reduce vibration during operation of the rotary distribution valve.

[0073] The use method of the rotary distribution valve provided by the application includes the following steps: rotating the second valve part 200, and as the second valve part 200 rotates, the same communication hole 202 on the second valve part 200 can be sequentially communicated with different flow connection grooves 301 on the third valve part 300, and the same distribution groove 201 on the second valve part 200 can be sequentially communicated with different flow inlet holes 101 on the first valve part 100, so that the same flow outlet hole 302 on the third valve part 300 can be sequentially communicated with different flow inlet holes 101 on the first valve part 100.

[0074] Further, the method further includes the following steps: before the control device controls the driving device to drive the second valve part 200 to rotate, the pressing device is controlled to reduce the pressure on the first valve part 100 and / or the third valve part 300, and after the pressure is reduced to a target degree, the driving device is controlled to drive the second valve part 200 to rotate, so as to reduce the rotation resistance and avoid wear of the sealing element during rotation. After the second valve part 200 is rotated to a target angle, the control device controls the pressing device to increase the pressure on the first valve part 100 and / or the third valve part 300 until a target pressure is reached, so as to ensure the sealing performance.

[0075] The continuous ion exchange equipment provided by the application includes the above-mentioned rotary distribution valve and can also use the above-mentioned use method. The structure and working principle of the continuous ion exchange equipment are well known to those skilled in the art, and will not be described here.

[0076] The principles and implementation manners of the present application are described by using specific examples above, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A rotary dispensing valve characterized by, The rotating distribution valve comprises a first valve part (100), a second valve part (200) and a third valve part (300) which are sequentially stacked in the axial direction, and the second valve part (200) can rotate around the central axis relative to the first valve part (100) and the third valve part (300); The first valve part (100) is provided with a plurality of inlet holes (101), one end of the inlet hole (101) penetrates to the end face of the first valve part (100) close to the second valve part (200), and the other end of the inlet hole (101) communicates with the outside of the rotating distribution valve; On the end face of the first valve part (100) close to the second valve part (200), a plurality of first circumferences with different diameters centered on the central axis are each distributed with at least one inlet hole (101), and on the end face of the second valve part (200) close to the first valve part (100), a plurality of second circumferences with different diameters centered on the central axis are each distributed with a distribution groove (201) extending in the circumferential direction, the diameter of each second circumference is the same as the diameter of a first circumference, so that each distribution groove (201) can communicate with at least one inlet hole (101); The second valve part (200) is provided with a plurality of communication holes (202), each distribution groove (201) communicates with one end of at least one communication hole (202), and the other end of each communication hole (202) penetrates to the end face of the second valve part (200) close to the third valve part (300), and the communication holes (202) communicating with different distribution grooves (201) are each distributed on different first radius lines (D) at different angles on the end face of the second valve part (200) close to the third valve part (300), and the included angle between adjacent first radius lines (D) is the same; On the end face of the third valve part (300) close to the second valve part (200), a plurality of second radius lines (E) at different angles are each distributed with a flow connection groove (301) extending in the radial direction, and the third valve part (300) is provided with a plurality of outlet holes (302), each flow connection groove (301) communicates with one end of at least one outlet hole (302), and the other end of each outlet hole (302) communicates with the outside of the rotating distribution valve; The second valve part (200) can rotate to a plurality of conducting positions, and when the second valve part (200) is located at the conducting position, each second radius line (E) coincides with a first radius line (D), so that each flow connection groove (301) communicates with at least one communication hole (202).

2. The rotary distribution valve of claim 1, wherein The end of the inlet hole (101) communicating with the outside of the rotating distribution valve penetrates to the end face of the first valve part (100) away from the second valve part (200) or penetrates to the outer side face of the first valve part (100).

3. The rotary distribution valve of claim 1, wherein, All the inlet holes (101) are distributed on the same angle radius line or at least two of the inlet holes (101) are distributed on different angle radius lines on an end face of the first valve part (100) close to the second valve part (200).

4. The rotary distribution valve of claim 1, wherein An end of the outlet hole (302) communicating with the outside of the rotary distribution valve penetrates to an end face of the third valve part (300) away from the second valve part (200) or penetrates to an outer side face of the third valve part (300).

5. The rotary distribution valve of claim 1, wherein, All the outlet holes (302) are respectively distributed on the same diameter circle with the center axis (C) as the center or at least two of the outlet holes (302) are distributed on different diameter circles with the center axis (C) as the center on an end face of the third valve part (300) close to the second valve part (200).

6. The rotary distribution valve of claim 1, wherein The communication holes (202) respectively communicating with different distribution grooves (201) are respectively located on different diameter circles with the center axis (C) as the center and are distributed in a spiral shape around the center axis (C) on an end face of the second valve part (200) close to the first valve part (100).

7. The rotary distribution valve of claim 1, wherein The distribution groove (201) is a circular groove or an arc-shaped groove with an arc less than 360°.

8. A rotary distribution valve according to any one of claims 1-7, characterized in that The rotary distribution valve comprises a driving device, a pressing device and a control device, the control device is capable of controlling the driving device to drive the second valve part (200) to rotate, and the pressing device is capable of applying axial pressure to the first valve part (100) and / or the third valve part (300) to make the first valve part (100) and the third valve part (300) axially press the second valve part (200).

9. The rotary distribution valve of claim 8, wherein, The driving device comprises a power component and a transmission component, the power component is in transmission connection with the second valve part (200) through the transmission component, and the transmission component comprises a gear ring (400) arranged outside the second valve part (200) and a gear in meshing connection with the gear ring (400).

10. The rotary distribution valve of claim 8, wherein, The pressing device adopts a gas pressure device or a hydraulic device.

11. The rotary distribution valve of claim 8, wherein, The rotary distribution valve comprises a monitoring device for monitoring the rotation angle and rotation speed of the second valve part (200), the monitoring device is in communication connection with the control device to transmit a monitoring signal to the control device, so that the control device can control the driving device based on the monitoring signal.

12. The rotary distribution valve of claim 8, wherein, The rotary distribution valve comprises a sealing device, the sealing device comprises a first sealing member arranged between the second valve part (200) and the first valve part (100), a second sealing member arranged between the second valve part (200) and the second valve part (200), a third sealing member arranged at an end of the inlet hole (101) communicating with the outside of the rotary distribution valve, and a fourth sealing member arranged at an end of the outlet hole (302) communicating with the outside of the rotary distribution valve.

13. The rotary distribution valve of claim 8, wherein, The rotating distribution valve comprises a center column (500), the first valve part (100), the second valve part (200) and the third valve part (300) are arranged outside the center column (500), the first valve part (100) and the third valve part (300) are fixedly arranged relative to the center column (500), and the second valve part (200) can rotate around the central axis of the center column (500).

14. The rotary distribution valve of claim 13, wherein, The rotating distribution valve comprises a base (600), which is arranged at the bottom end of the center column (500), the cross-sectional area of the base (600) is greater than that of the center column (500), and the base (600) is used to be fixed with the installation foundation.

15. A method of using a rotary dispensing valve, characterized by, The use method comprises the following steps: The second valve part (200) is rotated, and with the rotation of the second valve part (200), the same communication hole (202) on the second valve part (200) can be sequentially communicated with different flow connection grooves (301) on the third valve part (300), and the same distribution groove (201) on the second valve part (200) can be sequentially communicated with different flow inlet holes (101) on the first valve part (100), so that the same flow outlet hole (302) on the third valve part (300) is sequentially communicated with different flow inlet holes (101) on the first valve part (100).

16. The method of using a rotary distribution valve of claim 15, wherein, The use method comprises the following steps: Before the driving device drives the second valve part (200) to rotate, the control device controls the pressing device to reduce the pressure on the first valve part (100) and / or the third valve part (300) to a target degree, and then controls the driving device to drive the second valve part (200) to rotate, and after the second valve part (200) is rotated to a target angle, the control device controls the pressing device to increase the pressure on the first valve part (100) and / or the third valve part (300) until a target pressure is reached.

17. A continuous ion exchange apparatus characterized by: The ion exchange equipment comprises the rotating distribution valve according to any one of claims 1-16.

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