A rotary distribution valve, a continuous ion exchange apparatus

Abstract

The application discloses a rotary distribution valve and a continuous ion exchange device. The rotary distribution valve comprises a first valve part, a second valve part and a third valve part which are sequentially stacked in an axial direction. The first valve part is provided with an inlet hole. The second valve part is provided with a distribution groove and a communication hole. The third valve part is provided with a flow connection groove and an outlet hole. The second valve part can rotate around a central axis relative to the first valve part and the third valve part. With the rotation of the second valve part, the same communication hole can be sequentially communicated with different flow connection grooves, the same distribution groove can be sequentially communicated with different inlet holes, and the same outlet hole can form a passage between different inlet holes on the first valve part, so that the fluid from the same inlet hole can flow out from different outlet holes, and the same fluid can be continuously distributed to different containers through different outlet holes, realizing the continuous distribution of the fluid. The rotary distribution valve has the advantages of small overall volume, simple overall structure, low cost, few leakage points and convenient maintenance.

Description

Technical Field

[0001] This application relates to the field of ion exchange technology, and in particular to a rotary distribution valve and an ion exchange device. Background Technology

[0002] Continuous ion exchange equipment requires the sequential and continuous delivery of several solutions into different containers during operation. Currently available fluid distribution valves have numerous pipes connected to their rotating parts. When rotating, the pipes rotate together, resulting in a large rotational mass. This necessitates the use of both planar and rotary bearings to prevent wear caused by the large rotational mass. Overall, these systems suffer from problems such as large size, complex structure, susceptibility to leakage, difficulty in maintenance, high configuration costs, and limited application in confined spaces.

[0003] Therefore, how to ensure that the fluid distribution valve can continuously distribute several solutions while having a small size and simple structure, so as to reduce leakage points, facilitate maintenance and reduce costs, is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a rotary distribution valve, which includes a first valve section, a second valve section and a third valve section stacked sequentially along the axial direction, wherein the second valve section is capable of rotating about a central axis relative to the first valve section and the third valve section;

[0005] The first valve section is provided with multiple inlet holes, one end of each inlet hole is connected to the end face of the first valve section near the second valve section, and the other end of each inlet hole is connected to the outside of the rotary distribution valve.

[0006] On the end face of the first valve section near the second valve section, at least one flow inlet hole is distributed on each of a plurality of first circumferences of different diameters centered on the central axis. On the end face of the second valve section near the first valve section, a distribution groove extending circumferentially is distributed on each of a plurality of second circumferences of different diameters centered on the central axis. The diameter of each second circumference is the same as the diameter of one of the first circumferences, so that each distribution groove can communicate with at least one flow inlet hole.

[0007] The second valve section is provided with a plurality of connecting holes. Each of the distribution slots is connected to one end of at least one of the connecting holes. The other end of each of the connecting holes extends to the end face of the second valve section near the third valve section. On the end face of the second valve section near the third valve section, the connecting holes connected to different distribution slots are distributed on first radius lines at different angles. The included angle between adjacent first radius lines is the same.

[0008] On one end face of the third valve section near the second valve section, there is a radially extending flow groove distributed on a second radius line at multiple different angles. The third valve section is provided with multiple outlet holes. Each flow groove is connected to one end of at least one outlet hole, and the other end of each outlet hole is connected to the outside of the rotary distribution valve.

[0009] The second valve can be rotated to multiple open positions. When the second valve is in the open position, each of the second radius lines coincides with one of the first radius lines, such that each flow channel is connected to at least one of the connecting holes.

[0010] In one embodiment of the rotary distribution valve, one end of the inlet orifice, which communicates with the outside of the rotary distribution valve, extends to the end face of the first valve portion away from the second valve portion or extends to the outer surface of the first valve portion.

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

[0012] In one embodiment of the rotary distribution valve, one end of the outlet orifice, which communicates with the outside of the rotary distribution valve, extends to the end face of the third valve portion away from the second valve portion or extends to the outer side face of the third valve portion.

[0013] In one embodiment of the rotary distribution valve, on the end face of the third valve section near the second valve section, all the outlet holes are distributed on a circumference of the same diameter centered on the central axis, or at least two outlet holes are distributed on circumferences of different diameters centered on the central axis.

[0014] In one embodiment of the rotary distribution valve, on the end face of the second valve section near the first valve section, the connecting holes that communicate with different distribution slots are each located on a circumference of different diameters centered on the central axis and are spirally distributed around the central axis.

[0015] In one embodiment of the rotary distribution valve, the distribution groove is a circular groove or an arc-shaped groove with an arc angle of less than 360°.

[0016] One embodiment of a rotary distribution valve includes a drive device, a clamping device, and a control device. The control device is capable of controlling the drive device to drive the second valve section to rotate, and the clamping device is capable of applying axial pressure to the first valve section and / or the third valve section to axially press the second valve section against the first valve section and the third valve section.

[0017] In one embodiment of the rotary distribution valve, the driving device includes a power component and a transmission component. The power component is connected to the second valve section via the transmission component. The transmission component includes a gear ring disposed on the outside of the second valve section and a gear meshing with the gear ring.

[0018] In one embodiment of the rotary distribution valve, the clamping device is a pneumatic or hydraulic device.

[0019] One embodiment of the rotary distribution valve includes a monitoring device for monitoring the rotation angle and rotation speed of the second valve section. The monitoring device is communicatively connected to the control device to transmit monitoring signals to the control device, enabling the control device to control the drive device based on the monitoring signals.

[0020] One embodiment of a rotary distribution valve includes a sealing device comprising: a first sealing element disposed between a second valve portion and a first valve portion; a second sealing element disposed between the second valve portion and the first valve portion; a third sealing element disposed at one end of the inlet orifice communicating with the outside of the rotary distribution valve; and a fourth sealing element disposed at one end of the outlet orifice communicating with the outside of the rotary distribution valve.

[0021] One embodiment of a rotary distribution valve includes a central column, a first valve section, a second valve section, and a third valve section disposed outside the central column, the first valve section and the third valve section being fixedly disposed relative to the central column, and the second valve section being rotatable about the central axis of the central column.

[0022] One embodiment of a rotary distribution valve includes a base disposed at the bottom end of a central column, the base having a cross-sectional area larger than that of the central column, and the base being used for fixing to a mounting base.

[0023] This application also provides a continuous ion exchange device, which includes the rotary distribution valve described above.

[0024] The rotary distribution valve provided in this application allows fluid entering from the same inlet to flow out sequentially from different outlets by rotating the second valve section. This enables the same fluid to be continuously distributed to different containers through different outlets, achieving continuous fluid distribution. Furthermore, the second valve section has no external pipes, thus saving pipe volume and rotational mass. Bearings are no longer needed to prevent wear under large rotational mass. Therefore, the rotary distribution valve has a small overall size, simple overall structure, low cost, few leakage points, and is easy to maintain. Attached Figure Description

[0025] Figure 1A perspective view of a partial structure of one embodiment of the rotary distribution valve provided in this application;

[0026] Figure 2 for Figure 1 A three-dimensional schematic diagram of the first valve section;

[0027] Figure 3 for Figure 2 A bottom view;

[0028] Figure 4 for Figure 1 Top view of the second valve section;

[0029] Figure 5 for Figure 1 Top view of the third valve section;

[0030] Figure 6 A perspective view of the first valve section of another embodiment of the rotary distribution valve provided in this application;

[0031] Figure 7 A top view of the first valve section of another embodiment of the rotary distribution valve provided in this application;

[0032] Figure 8 To and Figure 7 A top view of the second valve section used in conjunction with the first valve section;

[0033] Figure 9 To and Figure 7 A top view of the third valve section used in conjunction with the second valve section.

[0034] The annotations in the attached figures are explained as follows:

[0035] 100 First valve section, 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;

[0036] 200 Second valve section, 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 Connecting hole, 202a First connecting hole, 202b Second connecting hole, 202c Third connecting hole, 202d Fourth connecting hole, 202e Fifth connecting hole, 202f Sixth connecting hole, 202g Seventh connecting hole, 202h Eighth connecting hole, 202I Ninth connecting hole, 202j Tenth connecting hole, 202k Eleventh connecting hole, 202m Twelfth connecting hole;

[0037] 300 Third valve section, 301 Flow inlet, 301a First flow inlet, 301b Second flow inlet, 301c Third flow inlet, 301d Fourth flow inlet, 301e Fifth flow inlet, 301f Sixth flow inlet, 301g Seventh flow inlet, 301h Eighth flow inlet, 301I Ninth flow inlet, 301j Tenth flow inlet, 301k Eleventh flow inlet, 301m Twelfth flow inlet, 302 Outlet, 302a First outlet, 302b Second outlet, 302c Third outlet, 302d Fourth outlet, 302e Fifth outlet, 302f Sixth outlet, 302g Seventh outlet, 302h Eighth outlet, 302I Ninth outlet, 302j Tenth outlet, 302k Eleventh outlet, 302m Twelfth outlet;

[0038] 400 gear ring; 500 center post; 600 base. Detailed Implementation

[0039] To enable those skilled in the art to better understand the technical solution of this application, the technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1-4 As 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.

[0041] 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 2The 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.

[0042] 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.

[0043] like Figure 4 As shown, on one end face of the second valve section 200 near the first valve section 100, a distribution groove 201 extending circumferentially is distributed on each of a plurality of circles (defined as the second circumference) of different diameters centered on the central axis. In this embodiment, the distribution groove 201 is a circular groove arranged around the entire circumference. Alternatively, it can be as follows: Figure 8 As shown, the distribution groove 201 is an arc-shaped groove that is not set in an entire circle, and the arc of the arc-shaped groove is less than 360°.

[0044] 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. In this embodiment, four distribution slots 201 and four inlet holes 101 are provided. Each distribution slot 201 is connected to one inlet hole 101. Specifically, the diameter of the second circumference where the first distribution slot 201a is located is the same as the diameter of the first circumference where the first inlet hole 101a is located, so that the first distribution slot 201a is connected to the first inlet hole 101a; the diameter of the second circumference where the second distribution slot 201b is located is the same as the diameter of the first circumference where the second inlet hole 101b is located, so that the second distribution slot 201b1 is connected to the second inlet hole 101b; the diameter of the second circumference where the third distribution slot 201 is located is the same as the diameter of the first circumference where the third inlet hole 101c is located, so that the third distribution slot 201c is connected to the third inlet hole 101c; the diameter of the second circumference where the fourth distribution slot 201d is located is the same as the diameter of the first circumference where the fourth inlet hole 101d is located, so that the fourth distribution slot 201d is connected to the fourth inlet hole 101d. Alternatively, a single distribution slot 201 can be connected to multiple inlet holes 101 simultaneously.

[0045] Furthermore, since the diameter of each second circumference is the same as the diameter of a first circumference, the inlet hole 101 connected to each distribution groove 201 remains unchanged throughout the entire rotation stroke of the second valve section 200. For example, in this embodiment, the inlet hole 101 connected to the first distribution groove 201a is always the first inlet hole 101a, the inlet hole 101 connected to the second distribution groove 201b is always the second inlet hole 101b, the inlet hole 101 connected to the third distribution groove 201c is always the third inlet hole 101c, and the inlet hole 101 connected to the fourth distribution groove 201d is always the fourth inlet hole 101d.

[0046] It should be noted that when the distribution groove 201 is an arc-shaped groove, during the 360° rotation of the second valve section 200, there is a period of time when the inlet hole 101 is outside the arc of the distribution groove 201. At this time, the inlet hole 101 and the distribution groove 201 are not connected. Therefore, when there is a need for intermittent conduction, an arc-shaped groove design can be adopted. If the stage where the inlet hole 101 and the distribution groove 201 are not connected is not required in actual application, the stage of disconnection can be avoided by limiting the rotation stroke of the second valve section 200.

[0047] like Figure 4As shown, the second valve section 200 is provided with a plurality of connecting holes 202. Each distribution groove 201 is connected to at least one end of a connecting hole 202, and the other end of each connecting hole 202 extends to the end face of the second valve section 200 near the third valve section 300. In this embodiment, four distribution grooves 201 and four connecting holes 202 are provided, with each distribution groove 201 connected to one end of a connecting hole 202. Alternatively, a single distribution groove 201 may be connected to one end of multiple connecting holes 202 simultaneously.

[0048] On the end face of the second valve section 200 near the third valve section 300, the connecting holes 202 that communicate with different distribution grooves 201 are each distributed on a radius line (defined as a first radius line D) at different angles, and the included angle between adjacent first radius lines D is the same. In this embodiment, the four connecting holes 202 that communicate with the four distribution grooves 201 are each distributed on a radius line at four different angles.

[0049] like Figure 5 As shown, on the end face of the third valve section 300 near the second valve section 200, a radially extending flow receiving groove 301 is distributed on each of multiple different radius lines (defined as second radius lines E), and the included angle between adjacent second radius lines E is the same. In this embodiment, four flow receiving grooves 301 are provided.

[0050] The second valve section 200 of the rotary distribution valve can be rotated to multiple open positions. When the second valve section 200 is in the open position, each second radius line E coincides with a first radius line. In this way, when the second valve section 200 is in the open position, each flow channel 301 is connected to a connecting hole 202 that is connected to a different distribution channel 201.

[0051] like Figure 5 As shown, the third valve section 300 is provided with a plurality of outlet holes 302. Each receiving groove 301 is connected to one end of at least one outlet hole 302, and the other end of the outlet hole 302 is connected to the outside of the rotary distribution valve. In this embodiment, the end of each outlet hole 302 connected to the outside of the rotary distribution valve extends to the end face of the third valve section 300 away from the second valve section 200. Alternatively, the end of each outlet hole 302 connected to the outside of the rotary distribution valve may extend to the outer surface of the third valve section 300. Alternatively, some outlet holes 302 may have one end connected to the outside of the rotary distribution valve extending to the end face of the third valve section 300 away from the second valve section 200, and some outlet holes 302 may have one end connected to the outside of the rotary distribution valve extending to the outer surface of the third valve section 300. In this embodiment, on the end face of the third valve section 300 near the second valve section 200, all outlet holes 302 are distributed on a circumference of the same diameter centered on the central axis C. Alternatively, they may be distributed as follows: Figure 9As shown, at least two outlet holes 302 are distributed on a circumference of different diameters centered on the central axis C.

[0052] The following is a specific example Figures 1-5 The following embodiment illustrates the working process of the rotary distributor valve:

[0053] In this embodiment, the second valve section 200 has four open positions.

[0054] When the second valve section 200 rotates to the first open position, the first receiving groove 301a connects to the first connecting hole 202a, which communicates with the first distribution groove 201a, allowing fluid entering from the first inlet hole 101a to flow out from the first outlet hole 302. The second receiving groove 301b connects to the second connecting hole 202b, which communicates with the second distribution groove 201b, allowing fluid entering from the second inlet hole 101b to flow out from the second outlet hole 302. The third receiving groove 301c connects to the third connecting hole 202c, which communicates with the third distribution groove 201c, allowing fluid entering from the third inlet hole 101c to flow out from the third outlet hole 302. The fourth distribution groove 201d connects to the fourth connecting hole 202d, which communicates with the fourth distribution groove 201d, allowing fluid entering from the fourth inlet hole 101d to flow out from the fourth outlet hole 302.

[0055] When rotated to the second conductive position, the first receiving groove 301a connects to the fourth connecting hole 202d, which communicates with the fourth distribution groove 201d, allowing fluid entering from the fourth inlet hole 101d to flow out from the first outlet hole 302. The second receiving groove 301b connects to the first connecting hole 202a, which communicates with the first distribution groove 201a, allowing fluid entering from the first inlet hole 101a to flow out from the second outlet hole 302. The third receiving groove 301c connects to the second connecting hole 202b, which communicates with the second distribution groove 201b, allowing fluid entering from the second inlet hole 101b to flow out from the third outlet hole 302. The fourth distribution groove 201d connects to the third connecting hole 202c, which communicates with the third distribution groove 201c, allowing fluid entering from the third inlet hole 101c to flow out from the fourth outlet hole 302.

[0056] When rotated to the third conductive position, the first receiving groove 301a connects to the third connecting hole 202c, which connects to the third distribution groove 201c, allowing fluid entering from the third inlet hole 101c to flow out from the first outlet hole 302. The second receiving groove 301b connects to the fourth connecting hole 202d, which connects to the fourth distribution groove 201d, allowing fluid entering from the fourth inlet hole 101d to flow out from the second outlet hole 302. The third receiving groove 301c connects to the first connecting hole 202a, which connects to the first distribution groove 201a, allowing fluid entering from the first inlet hole 101a to flow out from the third outlet hole 302. The fourth distribution groove 201d connects to the second connecting hole 202b, which connects to the second distribution groove 201b, allowing fluid entering from the second inlet hole 101b to flow out from the fourth outlet hole 302.

[0057] As can be seen, the rotary distribution valve provided in this application can make the fluid entering from the same inlet hole 101 flow out from different outlet holes 302 in sequence by rotating the second valve part 200. This allows the same fluid to be continuously distributed to different containers through different outlet holes 302, thus achieving continuous fluid distribution. Moreover, the second valve part 200 does not require an external pipe, thereby saving the volume of the pipe and the rotational mass. Furthermore, there is no need to install bearings to avoid wear under large rotational mass. Therefore, the rotary distribution valve has a small overall size, simple overall structure, low cost, few leakage points, and is easy to maintain.

[0058] Specifically, when the end of the 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, the inlet hole 101 can be configured to extend axially. In this way, the length of the inlet hole 101 is shorter, which helps to reduce flow resistance and is easier to process.

[0059] Specifically, when the end of the outlet hole 302 that communicates with the outside of the rotary distribution valve extends to the end face of the third valve section 300 away from the second valve section 200, the outlet hole 302 can be configured to extend axially. In this way, the length of the outlet hole 302 is shorter, which helps to reduce flow resistance and is easier to process.

[0060] Specifically, such as Figure 7 As shown, on the end face of the second valve section 200 near the first valve section 100, the connecting holes 202 that communicate with different distribution grooves 201 can be located on circles of different diameters centered on the central axis C and distributed in a spiral shape around the central axis C.

[0061] Furthermore, the rotary distribution valve provided in this application may also include a drive device, a clamping device, and a control device. The control device is capable of controlling the drive device to drive the second valve section 200 to rotate. The clamping device is capable of applying pressure to the first valve section 100 and / or the third valve section 300 to axially press the first valve section 100 and the third valve section 300 against the second valve section 200, thereby achieving a seal by utilizing the clamping force between the valve sections.

[0062] Specifically, the drive unit includes a power component and a transmission component. The power component is connected to the second valve section 200 via the transmission component. The power component can be an electric motor, hydraulic motor, etc. In the illustrated embodiment, the transmission component includes a gear ring 400 disposed outside the second valve section 200 and a gear meshing with the gear ring 400 (not shown in the figure). This transmission structure is simple and reliable. Of course, in actual implementation, the structure of the transmission component is not limited to this, as long as it can convert the power of the power component into the rotational motion of the second valve section 200.

[0063] Specifically, the clamping device can be a pneumatic device or a hydraulic device.

[0064] Specifically, before the control device controls the drive device to drive the second valve section 200 to rotate, it first controls the clamping device to reduce the pressure on the first valve section 100 and / or the third valve section 300. After reducing the pressure to the target level, the control device then controls the drive device to drive the second valve section 200 to rotate. This reduces rotational resistance and prevents wear on the seals during rotation. After the second valve section 200 rotates to the target angle, the control device controls the clamping device to increase the pressure on the first valve section 100 and / or the third valve section 300 until the target pressure is reached to ensure sealing.

[0065] Furthermore, the rotary distribution valve may include a monitoring device for monitoring the rotation angle and rotation speed of the second valve section 200. The monitoring device is communicatively connected to the aforementioned control device to transmit monitoring signals to the control device, enabling the control device to control the drive device based on the monitoring signals.

[0066] Furthermore, the rotary distribution valve includes a sealing device, which comprises: a first sealing element disposed between the second valve section 200 and the first valve section 100; a second sealing element disposed between the second valve section 200 and the third valve section 300; a third sealing element disposed at the end of the inlet orifice 101 communicating with the outside of the rotary distribution valve; and a fourth sealing element disposed at the end of the outlet orifice 302 communicating with the outside of the rotary distribution valve. The sealing elements may be made of polytetrafluoroethylene (PTFE). Alternatively, the first and second sealing elements may be omitted, allowing dynamic sealing between the first valve section 100 and the second valve section 200, and between the second valve section 200 and the third valve section 300, to be achieved through precise surface contact.

[0067] Specifically, the first valve section 100, the second valve section 200, and the third valve section 300 are preferably made of wear-resistant and corrosion-resistant materials, such as stainless steel, titanium alloy, and other metal materials, in order to improve the durability and strength of the components.

[0068] Furthermore, the rotary distribution valve may include a central column 500, with a first valve section 100, a second valve section 200, and a third valve section 300 disposed outside the central column 500. The first valve section 100 and the third valve section 300 are fixedly disposed relative to the central column 500, and the second valve section 200 is capable of rotating around the central axis of the central column 500. The central column 500 is provided to facilitate the first valve section 100, the second valve section 200, and the third valve section 300 to maintain a high degree of coaxiality.

[0069] Furthermore, the rotary distribution valve may include a base 600, which is disposed at the bottom of the central column 500. The cross-sectional area of ​​the base 600 is larger than that of the central column 500. The base 600 is used to fix the rotary distribution valve to the mounting base to reduce vibration during operation.

[0070] The continuous ion exchange apparatus provided in this application includes the aforementioned rotary distribution valve. The structure and working principle of the continuous ion exchange apparatus are well known to those skilled in the art and will not be described in detail here.

[0071] The above examples illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A rotary distribution valve, characterized in that, The rotary distribution valve includes a first valve section (100), a second valve section (200) and a third valve section (300) stacked sequentially along the axial direction. The second valve section (200) is rotatable relative to the first valve section (100) and the third valve section (300) about a central axis. The first valve section (100) is provided with a plurality of inlet holes (101), one end of the inlet hole (101) is connected to the end face of the first valve section (100) near the second valve section (200), and the other end of the inlet hole (101) is connected to the outside of the rotary distribution valve; On the end face of the first valve section (100) near the second valve section (200), at least one inlet hole (101) is distributed on each of a plurality of first circumferences of different diameters centered on the central axis. On the end face of the second valve section (200) near the first valve section (100), a distribution groove (201) extending circumferentially is distributed on each of a plurality of second circumferences of different diameters centered on the central axis. The diameter of each second circumference is the same as the diameter of one of the first circumferences, so that each distribution groove (201) can communicate with at least one inlet hole (101). The second valve section (200) is provided with a plurality of connecting holes (202). Each of the distribution grooves (201) is connected to one end of at least one of the connecting holes (202). The other end of each of the connecting holes (202) extends to the end face of the second valve section (200) near the third valve section (300). On the end face of the second valve section (200) near the third valve section (300), the connecting holes (202) connected to different distribution grooves (201) are distributed on first radius lines (D) at different angles. The included angle between adjacent first radius lines (D) is the same. On the end face of the third valve section (300) near the second valve section (200), there is a radially extending receiving groove (301) distributed on a plurality of second radius lines (E) at different angles. The third valve section (300) is provided with a plurality of outlet holes (302). Each receiving groove (301) is connected to one end of at least one outlet hole (302), and the other end of each outlet hole (302) is connected to the outside of the rotary distribution valve. The second valve (200) is rotatable to multiple open positions. When the second valve (200) is in the open position, each of the second radius lines (E) coincides with one of the first radius lines (D), such that each flow channel (301) is connected to at least one of the connecting holes (202).

2. The rotary distribution valve according to claim 1, characterized in that, The inlet hole (101) communicates with the outside of the rotary distribution valve at one end, which extends to the end face of the first valve part (100) away from the second valve part (200) or extends to the outer side of the first valve part (100).

3. The rotary distribution valve according to claim 1, characterized in that, On the end face of the first valve section (100) near the second valve section (200), all the inlet holes (101) are distributed on the same radius line or at least two of the inlet holes (101) are distributed on the radius lines at different angles.

4. The rotary distribution valve according to claim 1, characterized in that, The outlet hole (302) communicates with the outside of the rotary distribution valve at one end, which extends to the end face of the third valve section (300) away from the second valve section (200) or extends to the outer side of the third valve section (300).

5. The rotary distribution valve according to claim 1, characterized in that, On the end face of the third valve section (300) near the second valve section (200), all the outlet holes (302) are distributed on the same diameter circumference centered on the central axis (C), or at least two outlet holes (302) are distributed on different diameter circumferences centered on the central axis (C).

6. The rotary distribution valve according to claim 1, characterized in that, On the end face of the second valve section (200) near the first valve section (100), the connecting holes (202) that communicate with different distribution grooves (201) are each located on a circumference of different diameters centered on the central axis (C) and are spirally distributed around the central axis (C).

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

8. The rotary distribution valve according to any one of claims 1-7, characterized in that, The rotary distribution valve includes a drive device, a clamping device, and a control device. The control device can control the drive device to drive the second valve section (200) to rotate. The clamping device can apply axial pressure to the first valve section (100) and / or the third valve section (300) so that the first valve section (100) and the third valve section (300) axially clamp the second valve section (200).

9. The rotary distribution valve according to claim 8, characterized in that, The drive device includes a power component and a transmission component. The power component is connected to the second valve section (200) via the transmission component. The transmission component includes a gear ring (400) disposed on the outside of the second valve section (200) and a gear meshing with the gear ring (400).

10. The rotary distribution valve according to claim 8, characterized in that, The clamping device is either a pneumatic device or a hydraulic device.

11. The rotary distribution valve according to claim 8, characterized in that, The rotary distribution valve includes a monitoring device for monitoring the rotation angle and rotation speed of the second valve section (200). The monitoring device is communicatively connected to the control device to transmit monitoring signals to the control device, enabling the control device to control the drive device based on the monitoring signals.

12. The rotary distribution valve according to claim 8, characterized in that, The rotary distribution valve includes a sealing device, which includes: a first sealing element disposed between the second valve section (200) and the first valve section (100); a second sealing element disposed between the second valve section (200) and the second valve section (200); a third sealing element disposed at one end of the inlet hole (101) communicating with the outside of the rotary distribution valve; and a fourth sealing element disposed at one end of the outlet hole (302) communicating with the outside of the rotary distribution valve.

13. The rotary distribution valve according to claim 8, characterized in that, The rotary distribution valve includes a central column (500), a first valve part (100), a second valve part (200) and a third valve part (300) disposed outside the central column (500), the first valve part (100) and the third valve part (300) being fixedly disposed relative to the central column (500), and the second valve part (200) being rotatable around the central axis of the central column (500).

14. The rotary distribution valve according to claim 13, characterized in that, The rotary distribution valve includes a base (600) disposed at the bottom end of the central column (500). The cross-sectional area of ​​the base (600) is larger than that of the central column (500). The base (600) is used to fix to the mounting base.

15. A continuous ion exchange device, characterized in that: The ion exchange apparatus includes the rotary distribution valve as described in any one of claims 1-14.

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