Multi-position eight-way valve and one-column one-valve novel adsorption device thereof

Abstract

The invention belongs to the field of adsorption, and discloses a multi-position eight-way valve and a novel one-column one-valve adsorption device thereof, the device is mainly composed of adsorption columns and the multi-position eight-way valve, one adsorption column is only controlled by one multi-position eight-way valve, and only the multi-position eight-way valve is rotated to realize switching of adsorption, water washing and elution functions. And continuous operation of the adsorption process. The device adopts a modular structure, the number of the adsorption columns can be increased and decreased at will according to actual requirements, and due to the fact that one adsorption column is only controlled by one multi-position eight-way valve, the problems that a traditional fixed bed adsorption system is multiple in valve and complex in logic control are solved. Besides, through combined control of the multi-position eight-way valve, adsorption, water washing and elution can be performed synchronously, and intermittent operation of elution and water washing can also be realized, so that the number of adsorption columns is reduced to the maximum extent and the utilization rate of an adsorption material is improved under the condition that continuous adsorption of the device is realized.

Description

Technical Field

[0001] This invention belongs to the field of adsorption, and in particular to a multi-position eight-way valve and a novel adsorption device with one valve per column. Background Technology

[0002] An adsorption device is a apparatus used to separate specific components from a gas or liquid mixture. It works by passing the mixture through an adsorption tower containing an adsorbent, causing the target component to be adsorbed onto a solid surface. Adsorption can remove organic matter and pollutants from gaseous and liquid phases, and can also be used to separate and extract usable resources from gaseous and liquid phases using selective adsorbents.

[0003] The most commonly used equipment for adsorption is the fixed-bed adsorption system, in which the mixture enters from the top of the adsorption tower and flows out from the bottom. Once the adsorbent in the tower reaches saturation, it is desorbed by a desorption solution. However, fixed-bed adsorption systems require repeated switching between adsorption and desorption modes, leading to high frequency of control valve switching and a high probability of valve failure. Furthermore, since a single tower cannot simultaneously perform adsorption and desorption, and the production cycle is long, multiple towers are often operated in parallel to improve efficiency. However, parallel operation of multiple adsorption towers increases the number of pipelines and valves, raises equipment costs, and complicates valve switching between adsorption and desorption states. Rotary adsorption-desorption fixed-bed devices can arrange multiple towers in a circular pattern, with pipelines centrally laid at the top of the towers, significantly reducing the footprint and pipeline length of the adsorption unit. Chinese patent CN115540383A discloses a rotary switching adsorption-type refrigeration / heat pump air conditioning device. In this device, when the adsorption tower reaches adsorption saturation, the inlet and outlet pipes of the adsorption liquid at the top of the tower are rotated to the eluent pipe, thereby reducing the risk of valve misoperation. However, this device does not solve the problem of using adsorption towers in series, which undoubtedly reduces the utilization rate of the adsorbent. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-position eight-way valve and a novel adsorption device with one valve per column. By replacing the traditional two-way valve with a multi-position eight-way valve, and controlling one adsorption column with only one multi-position eight-way valve, the adsorption, washing or regeneration of the adsorption column and the continuous operation of the adsorption process can be realized.

[0005] The technical solution adopted by this invention to solve the technical problem is:

[0006] The first aspect of the present invention provides a multi-position eight-way valve, including a valve core and a valve housing. The valve housing has eight first interfaces and four second interfaces. The first interfaces are located at the top and / or bottom of the valve housing, and the second interfaces are located on the side of the valve housing. The valve core has eight channels and multiple notches. Each channel has an inlet and an outlet. The valve core can rotate within the valve housing. When the valve core is rotated, the inlet of the channel is always aligned with the first interface. Any two adjacent channel outlets can be connected to any two second interfaces. Furthermore, the notches of the valve core allow any two adjacent second interfaces of the valve housing to be connected.

[0007] Furthermore, the multi-position eight-way valve is a twenty-position eight-way valve, with an included angle of 18° between two adjacent second ports. The valve core has eight channels and six notches, and the valve core has twenty equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, eleventh, twelfth, fifteenth, and sixteenth equally divided positions, and the six notches are distributed between the third and fourth, seventh and eighth, ninth and tenth, thirteenth and fourteenth, seventeenth and eighteenth, nineteenth and twentieth equally divided positions.

[0008] Alternatively, the multi-position eight-way valve may be an eighteen-position eight-way valve, with an included angle of 20° between two adjacent second ports. The valve core has eight channels and five notches, and the valve core has eighteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, fifteenth and sixteenth, and seventeenth and eighteenth equally divided positions.

[0009] Alternatively, the multi-position eight-way valve may be a sixteen-position eight-way valve, with an included angle of 22.5° between two adjacent second ports. The valve core has eight channels and four notches, and the valve core has sixteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, and fifteenth and sixteenth equally divided positions.

[0010] Furthermore, the multi-position eight-way valve is a fourteen-position eight-way valve, with an included angle of (180 / 7)° between two adjacent second ports. The valve core has eight channels and three notches, and the valve core has fourteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, eleventh, and twelfth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, and thirteenth and fourteenth equally divided positions.

[0011] Alternatively, the multi-position eight-way valve may be a fourteen-position eight-way valve II, with an included angle of (180 / 7)° between two adjacent second ports. The valve core has eight channels and three notches, and the valve core has fourteen equally divided positions. The channel outlets are distributed at the first, second, third, fourth, seventh, eighth, ninth, and tenth equally divided positions, and the notches are distributed between the fifth and sixth, eleventh and twelfth, and thirteenth and fourteenth equally divided positions.

[0012] The second aspect of the present invention provides a novel adsorption device based on the multi-position eight-way valve described in the first aspect, comprising multiple adsorption columns and multiple multi-position eight-way valves respectively connected to each adsorption column, wherein adsorption, washing or elution of different adsorption columns is realized by controlling the multi-position eight-way valves.

[0013] Further, the device includes n (n≥6) adsorption columns and n (n≥6) 20-position 8-way valves, wherein one adsorption column and one 20-position 8-way valve constitute an adsorption unit. The four second interfaces on the side of the valve body of the 20-position 8-way valve are q interface, r interface, s interface, and t interface, respectively. By rotating the valve core of the 20-position 8-way valve, any two adjacent channels of the valve core can be connected to any two adjacent second interfaces from q to t, and each notch of the valve core can allow any two adjacent second interfaces from q to t to be connected. In each adsorption unit, the r interface and s interface of the 20-position 8-way valve are connected to the inlet and outlet of the adsorption column in the adsorption unit, respectively; the q interface of the 20-position 8-way valve in the first-stage adsorption unit is connected to the t interface of the 20-position 8-way valve in the last-stage adsorption unit. The t-port of the 20-position 8-way valve in other adsorption units is connected to the q-port of the 20-position 8-way valve in the next adsorption unit. When the device is running, the eight first ports of the 20-position 8-way valve body are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. The two adjacent channels of the 20-position 8-way valve core are respectively connected to the q and r second ports or the s and t second ports of the valve body, or the q and r second ports and / or the s and t second ports are connected through the notch of the valve core. By rotating the valve core of the corresponding 20-position 8-way valve clockwise or counterclockwise by 36° and / or 72°, the operating state of different adsorption columns can be switched.

[0014] Furthermore, the device includes five adsorption columns and five eighteen-position eight-way valves. One adsorption column and one eighteen-position eight-way valve constitute an adsorption unit. The four second interfaces on the side of the valve body of the eighteen-position eight-way valve are q1 interface, r1 interface, s1 interface, and t1 interface, respectively. By rotating the valve core of the eighteen-position eight-way valve, any two adjacent channels of the valve core can be connected to any two adjacent second interfaces from q1 to t1, and each notch of the valve core can allow any two adjacent second interfaces from q1 to t1 to be connected. In each adsorption unit, the r1 and s1 ports of the 18-position 8-way valve are connected to the inlet and outlet of the adsorption column in the adsorption unit, respectively. The q1 port of the 18-position 8-way valve in the first-stage adsorption unit is connected to the t1 port of the 18-position 8-way valve in the last-stage adsorption unit. The t1 port of the 18-position 8-way valve in other adsorption units is connected to the q1 port of the 18-position 8-way valve in the next-stage adsorption unit. When the device is running, the eight first ports of the 18-position 8-way valve body are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. The two adjacent channels of the 18-position 8-way valve core are connected to the q1 and r1 ports or the s1 and t1 ports of the valve body, respectively, or the q1 and r1 ports and / or the s1 and t1 ports are connected through the notch of the valve core. By rotating the valve core of the corresponding 18-position 8-way valve clockwise or counterclockwise by 40° and / or 80°, the operating states of different adsorption columns can be switched.

[0015] Furthermore, the device includes four adsorption columns and four 16-position 8-way valves, wherein one adsorption column and one 16-position 8-way valve constitute an adsorption unit. The four second interfaces on the side of the 16-position 8-way valve housing are q2 to t2. By rotating the valve core, any two adjacent channels of the valve core can communicate with any two adjacent second interfaces from q2 to t2, and each notch of the valve core allows communication between any two adjacent second interfaces from q2 to t2. In each adsorption unit, the r2 and s2 interfaces of the 16-position 8-way valve are connected to the inlet and outlet of the adsorption column in that adsorption unit, respectively. The q2 interface of the 16-position 8-way valve in the first-stage adsorption unit is connected to the t2 interface of the 16-position 8-way valve in the last-stage adsorption unit. The t2 interface of the 16-position 8-way valve in other adsorption units is connected to the 16-position 8-way valve in the next-stage adsorption unit. The 8-way valve is connected to the q2 port. When the device is running, the 8 first ports of the 8-way valve body are respectively the raw material liquid inlet, raw material liquid outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material liquid, clean water outlet for washing raw material liquid, clean water inlet for washing eluent, and clean water outlet for washing eluent. The two adjacent channels of the 8-way valve core are respectively connected to the q2 and r2 ports or the s2 and t2 ports of the valve body, or the q2 and r2 ports or the s2 and t2 ports are connected through the notch of the valve core. By rotating the valve core of the 8-way valve clockwise or counterclockwise by 45° and / or 90°, the different adsorption column operating states can be switched.

[0016] Furthermore, the device includes three adsorption columns and three 14-position eight-way valves. One adsorption column and one 14-position eight-way valve constitute an adsorption unit. The four second interfaces on the side of the valve body of the 14-position eight-way valve are four second interfaces from q3 to t3. By rotating the valve core of the 14-position eight-way valve, any two adjacent channels of the valve core can be connected to any two adjacent second interfaces from q3 to t3, and each notch of the valve core can allow any two adjacent second interfaces from q3 to t3 to be connected. In each adsorption unit, the R3 and S3 ports of the 14-position 8-way valve are connected to the inlet and outlet of the adsorption column in that unit, respectively. In the first-stage adsorption unit, the Q3 port of the 14-position 8-way valve is connected to the T3 port of the 14-position 8-way valve in the last-stage adsorption unit. In other adsorption units, the T3 port of the 14-position 8-way valve is connected to the Q3 port of the next-stage adsorption unit. During operation, the eight first ports of the 14-position 8-way valve are respectively the feed liquid inlet, feed liquid outlet, eluent inlet, and eluent outlet. The valve core of the fourteen-position eight-way valve has two adjacent channels that are connected to the two second interfaces q3 and r3 or s3 and t3 of the valve body, respectively. Alternatively, the two second interfaces q3 and r3 or s3 and t3 are connected through the notch of the valve core. By rotating the valve core of the fourteen-position eight-way valve one clockwise or counterclockwise by (360 / 7)° and (or (720 / 7)°, the operating states of different adsorption columns can be switched.

[0017] Furthermore, the device includes n (n≥4) adsorption columns and n (n≥4) fourteen-position eight-way valves. One adsorption column and one fourteen-position eight-way valve constitute an adsorption unit. The four second interfaces on the side of the valve body of the fourteen-position eight-way valve are q4 to t4. By rotating the valve core of the fourteen-position eight-way valve, any two adjacent channels of the valve core can be connected to any two adjacent second interfaces among q4 to t4, and each notch of the valve core can allow any two adjacent second interfaces among q4 to t4 to be connected. In each adsorption unit, the r4 and s4 ports of the fourteen-position eight-way valve are connected to the inlet and outlet of the adsorption column in that adsorption unit, respectively. The s4 port of the fourteen-position eight-way valve in the first-stage adsorption unit is connected to the t4 port of the fourteen-position eight-way valve in the last-stage adsorption unit. The t4 port of the fourteen-position eight-way valve in other adsorption units is connected to the q4 port of the fourteen-position eight-way valve in the next-stage adsorption unit. When the device is running, the eight first ports of the fourteen-position eight-way valve are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. The two adjacent channels of the fourteen-position eight-way valve core are respectively connected to the two second ports q4 and r4 or the two second ports s4 and t4 of the valve core, or the two second ports q4 and r4 and / or the two second ports s4 and t4 are connected through the notch of the valve core. By rotating the valve core of the corresponding fourteen-position eight-way valve two at a certain angle clockwise or counterclockwise, the operating states of different adsorption columns can be switched.

[0018] Furthermore, in the above-described device, each adsorption unit also includes a six-way valve, which has interfaces a, b, c, d, e, and f. Interfaces a and d of the six-way valve are connected to the inlet and outlet of the adsorption column in the adsorption unit, respectively; interface b of the six-way valve is connected to interface r of the 20-position 8-way valve, interface r2 of the 16-position 8-way valve, interface r3 of the 14-position 8-way valve one, or interface r4 of the 14-position 8-way valve two in the adsorption unit; interface c of the six-way valve is connected to... The S-port of the twenty-position eight-way valve, the S2-port of the sixteen-position eight-way valve, the S3-port of the fourteen-position eight-way valve one, or the S4-port of the fourteen-position eight-way valve two in the adsorption unit are connected; the E-port and F-port of the six-way valve in the adjacent adsorption unit are connected; the F-port of the six-way valve in the first-stage adsorption unit and the E-port of the six-way valve in the last-stage adsorption unit are the inlet and outlet of the washing liquid, respectively. By rotating the valve core of the six-way valve in the corresponding adsorption unit clockwise or counterclockwise by 60°, the adsorption column in the adsorption unit is cut off by the device.

[0019] The advantages and positive effects of this invention are:

[0020] This device adopts a modular structure, allowing for the addition or removal of adsorption columns as needed without altering the overall structure. Each adsorption column is controlled by a single multi-position eight-way valve, solving the problems of numerous valves and complex logic control in traditional fixed-bed adsorption systems. Through combined control of the multi-position eight-way valve, simultaneous adsorption, washing eluent, elution, and washing feed solution can be achieved, as well as intermittent operation between elution and washing eluent or washing feed solution, thus maximizing the reduction in the number of adsorption columns. The switching processes of adsorption, washing, and elution in the adsorption column only involve the rotational control of the multi-position eight-way valve, making automation easily achievable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the adsorption device structure in Example 1;

[0022] Figure 2a This is a top perspective view of the 20-position 8-way valve in Example 1;

[0023] Figure 2b This is a front perspective view of the 20-position 8-way valve in Example 1;

[0024] Figure 2c for Figure 2a Top perspective view of a 20-position 8-way valve after the valve core has been rotated 36° counterclockwise;

[0025] Figure 3 This is a schematic diagram of another adsorption state structure of the adsorption device in Example 1;

[0026] Figure 4 This is a schematic diagram of the adsorption device in Example 1 operating in the interval between water washing and elution.

[0027] Figure 5 This is a schematic diagram of the adsorption device structure in Example 2;

[0028] Figure 6a This is a top perspective view of the 18-position 8-way valve in Example 2;

[0029] Figure 6b for Figure 6a Top perspective view of an 18-position 8-way valve after the valve core has been rotated 40° counterclockwise;

[0030] Figure 7 This is a schematic diagram of the adsorption device structure in Example 3;

[0031] Figure 8a This is a top perspective view of the sixteen-position eight-way valve in Example 3;

[0032] Figure 8b for Figure 8a Top perspective view of a 16-position 8-way valve after the valve core has been rotated 45° counterclockwise;

[0033] Figure 9 This is a schematic diagram of the adsorption device structure in Example 4;

[0034] Figure 10a This is a top perspective view of the fourteen-position eight-way valve in Example 4;

[0035] Figure 10b for Figure 10a Top perspective view of the valve core of the 14-position 8-way valve after being rotated counterclockwise by (360 / 7)°;

[0036] Figure 11 This is a schematic diagram of the adsorption device structure in Example 5;

[0037] Figure 12a This is a top perspective view of the fourteen-position eight-way valve in Example 5;

[0038] Figure 12b for Figure 12a Top perspective view of the valve core of the 14-position 8-way valve II after being rotated counterclockwise by (360 / 7)°;

[0039] Figure 13 This is a schematic diagram of the adsorption device structure in Example 6;

[0040] Figure 14a This is a top perspective view of the six-way valve in Example 6;

[0041] Figure 14b This is a front perspective view of the six-way valve in Example 6;

[0042] Figure 14c for Figure 14a A top-view perspective view of the valve core of a six-way valve after it has been rotated 60° clockwise.

[0043] The labels in the diagram are as follows: 1-4 are, in order, the feed liquid inlet, the eluent inlet, the clean water inlet for washing the feed liquid, and the clean water inlet for washing the eluent; 5-8 are, in order, the feed liquid outlet, the eluent outlet, the clean water outlet for washing the feed liquid, and the clean water outlet for washing the eluent; 9-14 are all 20-position 8-way valves; 15-20, 26-30, 35-38, 42-44, 51-56, and 69-74 are all adsorption columns; 21-25 are all 18-position 8-way valves; 31-34 are all 16-position 8-way valves; 39-41 are all 14-position 8-way valve one; 45-50 and 57-62 are all 14-position 8-way valve two; 63-68 are all 6-way valves. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0045] Example 1

[0046] A novel adsorption device based on a 20-position 8-way valve, consisting of six adsorption columns (adsorption columns 15-20) and six 20-position 8-way valves (20-position 8-way valves 9-14), is described below. Figure 1 As shown in the figure. One adsorption column and one 20-position 8-way valve constitute one adsorption unit, with a total of six adsorption units. The top and front perspective views of the 20-position 8-way valve are shown below. Figure 2a and Figure 2b The 20-position 8-way valve has a valve body with 8 first ports (i-p ports) and 4 second ports (q-t ports). The first ports are located at the top and bottom of the valve body, and the second ports are located on the side of the valve body. The included angle between any two adjacent second ports is 18°. The valve core has 8 channels (a-h channels) and 6 notches. Each channel has an inlet and an outlet. The valve core has 20 equally divided positions. The channel outlets are distributed in the first, second, fifth, sixth, eleventh, twelfth, fifteenth, and sixteenth positions. The 6 notches are distributed between the third and fourth, seventh and eighth, ninth and tenth, thirteenth and fourteenth, seventeenth and eighteenth, nineteenth and twentieth positions. The valve core can rotate within the valve body. When the valve core is rotated, the inlet of the channel is always aligned with the first port. Any two adjacent channel outlets can connect with any two second ports. Furthermore, each notch on the valve core allows any two adjacent second ports (q-t) on the side of the valve body to connect. The top of the 20-position 8-way valve housing contains four first ports (i-l). These four first ports are connected to the inlets of channels e-h of the valve core via four circular distribution rings on the top, i.e., port i connects to the inlet of channel g, port j connects to the inlet of channel e, port k connects to the inlet of channel f, and port l connects to the inlet of channel h. The bottom of the 20-position 8-way valve housing contains four first ports (m-p). These four first ports are connected to the inlets of channels a-d of the valve core via four circular distribution rings on the bottom, i.e., port m connects to the inlet of channel c, port n connects to the inlet of channel a, port o connects to the inlet of channel b, and port p connects to the inlet of channel d.

[0047] like Figure 1The adsorption device shown has the following connections: the q port of the 20-position 8-way valve 9 is connected to the t port of the 20-position 8-way valve 14; the r and s ports of the 20-position 8-way valve 9 are connected to the inlet and outlet of the adsorption column 15, respectively; the q, r, s, and t ports of the 20-position 8-way valve 10 are connected to the t port of the 20-position 8-way valve 9, the inlet of the adsorption column 16, the outlet of the adsorption column 16, and the q port of the 20-position 8-way valve 11, respectively; and the r, s, and t ports of the 20-position 8-way valve 11 are connected to the inlet of the adsorption column 17, ... The outlet of adsorption column 17 is connected to the q port of 20-position 8-way valve 12. The r, s, and t ports of 20-position 8-way valve 12 are connected to the inlet, outlet, and q port of adsorption column 18, respectively. The r, s, and t ports of 20-position 8-way valve 13 are connected to the inlet, outlet, and q port of adsorption column 19, respectively. The r and s ports of 20-position 8-way valve 14 are connected to the inlet and outlet of adsorption column 20, respectively.

[0048] Operating procedure for a device that simultaneously performs adsorption, washing, and elution: During device operation, the eight first ports (i-p) of the 20-position 8-way valve body are connected to the material pipelines respectively. Specifically, port i is the clean water inlet for the washing / elution solution, port j is the eluent inlet, port k is the clean water outlet for the washing / elution solution, port l is the raw material outlet, port m is the clean water inlet for the washing raw material solution, port n is the raw material inlet, port o is the clean water outlet for the washing raw material solution, and port p is the eluent outlet. When the device is in operation... Figure 1 As shown, adsorption columns 15 and 16 are in series adsorption mode, adsorption column 17 is in water washing eluent mode, adsorption columns 18 and 19 are in series elution mode, and adsorption column 20 is in water washing feed liquid mode. When adsorption column 15 is saturated, the valve cores of the 20-position 8-way valves 9, 11, 12, and 14 are rotated counterclockwise by 72°, and the valve cores of the 20-position 8-way valves 10 and 13 are rotated counterclockwise by 36°. At this time, adsorption columns 16 and 17 are in series adsorption mode, adsorption column 18 is in water washing eluent mode, adsorption columns 19 and 20 are in series elution mode, and adsorption column 15 is in water washing feed liquid mode. The states of each 20-position 8-way valve are as follows. Figure 3 As shown in the figure (the material liquid pipelines before entering the multi-way valve are not shown). Figure 2a The state of the valve core of the 20-position 8-way valve after rotating counterclockwise by 36° is as follows Figure 2c As shown.

[0049] Operating procedure for the device operating between washing and elution: During device operation, the eight first ports (i-p) of the 20-position 8-way valve body are connected to the material pipeline respectively. The connection method is exactly the same as that of the device operating synchronously with adsorption, washing, and elution. When the device is in... Figure 4As shown, adsorption columns 15, 16, and 17 are in series adsorption mode, and adsorption columns 18, 19, and 20 are in series elution mode. After adsorption column 18 completes elution, the valve core of the 20-position 8-way valve 12 in the adsorption unit containing adsorption column 18 is rotated 36° counterclockwise. At this time, adsorption columns 15, 16, and 17 continue to be in series adsorption mode, adsorption column 18 is in the water washing eluent state, and adsorption columns 19 and 20 are in series elution mode. After adsorption column 18 completes water washing, simultaneously, the valve cores of 20-position 8-way valves 9 and 12 are rotated 72° counterclockwise, and the valve cores of 20-position 8-way valves 10 and 11 are rotated 36° counterclockwise. At this time, adsorption columns 16, 17, and 18 are in series adsorption mode, adsorption columns 19 and 20 continue to be in the series elution state, and adsorption column 15 is in the water washing feed solution state. After the adsorption column 15 is washed with water, the valve cores of the 20-position 8-way valves 9, 13, and 14 are rotated counterclockwise by 36°. At this time, the adsorption columns 16, 17, and 18 continue to be in the series adsorption state, while the adsorption columns 19, 20, and 15 are in the series elution state.

[0050] Example 2

[0051] A novel adsorption device based on an 18-position 8-way valve consists of five adsorption columns (adsorption columns 26-30) and five 18-position 8-way valves (18-position 8-way valves 21-25). The device structure is as follows: Figure 5 As shown in the figure (the material liquid pipelines before entering the multi-way valve are not shown), one adsorption column and one 18-position 8-way valve constitute an adsorption unit. The structure of the 18-position 8-way valve is similar to that of the 20-position 8-way valve in Example 1. The top perspective view of the 18-position 8-way valve is shown below. Figure 6a The difference lies in that the valve core has 8 channels and 5 notches, with 18 equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth positions, while the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, fifteenth and sixteenth, and seventeenth and eighteenth positions. The four second interfaces on the side of the valve body are q1, r1, s1, and t1 interfaces, with an angle of 20° between adjacent second interfaces. In each adsorption unit, the r1 and s1 interfaces of the eighteen-position eight-way valve are connected to the inlet and outlet of the adsorption column in that adsorption unit, respectively. The q1 interface of the eighteen-position eight-way valve in the first-stage adsorption unit is connected to the t1 interface of the eighteen-position eight-way valve in the last-stage adsorption unit. The t1 interface of the eighteen-position eight-way valve in other adsorption units is connected to the q1 interface of the eighteen-position eight-way valve in the next-stage adsorption unit.

[0052] When the adsorption device is running, the connection method between the eight first ports at the top and bottom of the 18-position 8-way valve body and each material liquid, as well as the device connection method, is the same as in Example 1. Figure 5In this configuration, adsorption columns 26 and 27 are in series adsorption, adsorption column 28 is in the water washing eluent state, adsorption column 29 is in the elution state, and adsorption column 30 is in the water washing feed liquid state. When adsorption column 26 is saturated, the valve cores of the eighteen-position eight-way valves 21, 23, 24, and 25 are rotated counterclockwise by 80°, and the valve core of the eighteen-position eight-way valve 22 is rotated by 40°. At this time, adsorption columns 27 and 28 are in series adsorption, adsorption column 29 is in the water washing eluent state, adsorption column 30 is in the elution state, and adsorption column 26 is in the water washing feed liquid state. Figure 6a The state of the valve core of the 18-position 8-way valve after rotating counterclockwise by 40° is as follows Figure 6b As shown. By adjusting the corresponding eighteen-position eight-way valve in the device to a certain state, the water washing and rinsing interval operation can be realized, and the method is similar to that in Example 1.

[0053] Example 3

[0054] A novel adsorption device based on a 16-position 8-way valve consists of four adsorption columns (adsorption columns 35-38) and four 16-position 8-way valves (16-position 8-way valves 31-34). The device structure is as follows: Figure 7 As shown (the material liquid pipelines before entering the multi-way valve are not shown in the figure). In the figure, one adsorption column and one 16-position 8-way valve constitute one adsorption unit, with a total of 5 adsorption units. A top-view perspective view of the 16-position 8-way valve can be found here. Figure 8a The structure of the 16-position 8-way valve is similar to that of the 20-position 8-way valve in Example 1, but the valve core of the 16-position 8-way valve only has four notches. The difference is that the four second interfaces of the valve body of the 16-position 8-way valve are q2 to t2 interfaces, and the included angle between two adjacent second interfaces is 22.5°. The valve core has 8 channels (channels a to h) and 4 notches. Each channel has an inlet and an outlet. The valve core has 16 equally divided positions. The channel outlets are distributed in the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, and fifteenth and sixteenth equally divided positions. The valve core can rotate inside the valve body. When the valve core is rotated, the inlet of the channel is always aligned with the first interface, and any two adjacent channel outlets can communicate with any two second interfaces. Each notch on the valve core allows any two adjacent second interfaces of the four second interfaces on the side of the valve body to communicate.

[0055] When the adsorption device is running, the connection method between the eight first ports at the top and bottom of the sixteen-position eight-way valve body and each material liquid, as well as the device connection method, is the same as in Example 1. Figure 7In the process, adsorption columns 35-38 are in the adsorption, water washing eluent, elution, and water washing feed liquid states, respectively. When adsorption column 35 is saturated, the valve cores of the four 16-position 8-way valves are rotated counterclockwise by 90°. At this time, adsorption column 36 is in the adsorption state, adsorption column 38 is in the elution state, and adsorption columns 35 and 37 are in the water washing feed liquid and water washing eluent states, respectively. Figure 8a The state of the valve core of the 16-position 8-way valve after rotating counterclockwise by 45° is as follows Figure 8b As shown. By adjusting the four 16-position 8-way valves in the device to the corresponding states, the water washing and rinsing interval operation can be achieved, and the method is similar to that in Example 1.

[0056] Example 4

[0057] A novel adsorption device based on a 14-position 8-way valve is described, consisting of three adsorption columns (adsorption columns 42-44) and three 14-position 8-way valves (14-position 8-way valves 39-41). The device structure is as follows. Figure 9 As shown (the material liquid pipelines before entering the multi-way valve are not shown in the figure). In the figure, one adsorption column and one 14-position 8-way valve constitute one adsorption unit, with a total of three adsorption units. A top perspective view of the 14-position 8-way valve is shown below. Figure 10a The structure of the 14-position 8-way valve is similar to that of the 20-position 8-way valve in Example 1, but the valve core of the 14-position 8-way valve only has three notches. The difference is that the second interface of the 14-position 8-way valve is the q3 to t3 interface, and the included angle between two adjacent second interfaces is (180 / 7)°. The valve core has 8 channels (channels a to h) and 3 notches. Each channel has an inlet and an outlet. The valve core has 14 equally divided positions. The channel outlets are distributed in the first, second, fifth, sixth, ninth, tenth, eleventh, and twelfth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, and thirteenth and fourteenth equally divided positions. The valve core can rotate inside the valve body. When the valve core is rotated, the inlet of the channel is always aligned with the first interface. Any two adjacent channel outlets can communicate with any two second interfaces. Each notch on the valve core allows any two adjacent second interfaces of the four second interfaces on the side of the valve body to communicate.

[0058] When the device is running, the connection method between the eight first ports at the top and bottom of the fourteen-position eight-way valve body and each material liquid, and the device connection method are the same as in Example 1. Figure 9In the process, adsorption columns 42 and 43 are in a series adsorption state, while adsorption column 44 is in an elution state. After adsorption column 44 has completed elution, the valve core of the 14-position 8-way valve 41 in the adsorption unit containing adsorption column 44 is rotated counterclockwise by (360 / 7)°, at which point adsorption column 44 is in a water washing eluent state. After adsorption column 44 has completed water washing, the valve cores of 14-position 8-way valves 39 and 41 are simultaneously rotated counterclockwise by (720 / 7)°, and the valve core of 14-position 8-way valve 40 is rotated counterclockwise by (360 / 7)°, at which point adsorption columns 43 and 44 are in a series adsorption state, while adsorption column 42 is in a water washing feed solution state. After adsorption column 42 has completed water washing, the valve core of 14-position 8-way valve 39 is rotated counterclockwise by (360 / 7)°, at which point adsorption columns 43 and 44 continue to be in a series adsorption state, while adsorption column 42 is in an elution state. Figure 10a The state of the valve core of the 14-position 8-way valve after being rotated counterclockwise by (360 / 7)° is as follows. Figure 10b As shown.

[0059] Example 5

[0060] A novel adsorption device based on a 14-position 8-way valve II, consisting of six adsorption columns (adsorption columns 51-56) and six 14-position 8-way valve IIs (14-position 8-way valve IIs 45-50), is described below. Figure 11 As shown (the material liquid pipelines before entering the multi-way valve are not shown in the figure). In the figure, one adsorption column and one 14-position 8-way valve constitute one adsorption unit, with a total of 6 adsorption units. A top-view perspective view of the 14-position 8-way valve is shown below. Figure 12a The structure of the fourteen-position eight-way valve II is similar to that of the fourteen-position eight-way valve I in Example 4, but the relative positions of the three notches on the valve core of the fourteen-position eight-way valve II are different. The difference is that the four second interfaces of the fourteen-position eight-way valve II are q4 to t4 interfaces, which divide the cross-section of the valve core into fourteen equal parts. The channel outlets are distributed at the first, second, third, fourth, seventh, eighth, ninth, and tenth division positions, and the notches are distributed between the fifth and sixth, eleventh and twelfth, and thirteenth and fourteenth division positions.

[0061] When the device is running, the connection method between the eight first ports at the top and bottom of the two valve bodies of the fourteen-position eight-way valve and each material liquid, and the device connection method are the same as in Example 1. Figure 11In this configuration, adsorption columns 51 and 52 are in series adsorption state, adsorption column 53 is in water washing eluent state, adsorption columns 54 and 55 are in series elution state, and adsorption column 56 is in water washing raw material state. When adsorption column 51 is saturated, simultaneously rotate the valve core of the 14-position 8-way valve 45 clockwise by (360 / 7)°, the valve core of the 14-position 8-way valve 46 counterclockwise by (720 / 7)°, the valve cores of the 14-position 8-way valves 47 and 49 counterclockwise by (360 / 7)°, and the valve cores of the 14-position 8-way valves 48 and 50 counterclockwise by (1080 / 7)°. At this time, adsorption columns 52 and 53 are in series adsorption state, adsorption column 54 is in water washing eluent state, adsorption columns 55 and 56 are in series elution state, and adsorption column 51 is in water washing raw material state. Figure 12a The state of the valve core of the 14-position 8-way valve after rotating counterclockwise by (360 / 7)° is as follows: Figure 12b As shown. By adjusting the two states of the fourteen-position eight-way valve in the device, the water washing and rinsing interval operation can be achieved, and the method is similar to that in Example 1.

[0062] Example 6

[0063] A novel adsorption device based on a 14-position 8-way valve and a 6-way valve, consisting of 6 adsorption columns (adsorption columns 69-74), 6 14-position 8-way valves (14-position 8-way valves 57-62), and 6 6-way valves (6-way valves 63-68), is described below. Figure 13 As shown (the material liquid pipelines before entering the multi-way valve are not shown in the figure). Compared with the adsorption device in Example 5, this adsorption device only has one more six-way valve in each adsorption unit. The top perspective view and front perspective view of the six-way valve are shown in the figure. Figure 14a and Figure 14b The six-way valve has ports a, b, c, d, e, and f. Figure 13 All six-way valves are connected at ports a and b, c and d, and e and f. When the adsorption column in the corresponding adsorption unit needs to be replaced or repaired, the adsorption column in the adsorption unit is cut off by rotating the valve core of the six-way valve in the adsorption unit 60° clockwise or counterclockwise. Figure 14a The state of the valve core of the six-way valve after rotating it 60° clockwise is shown in the figure. Figure 14c When there is no adsorption column cutting device, Figure 13 The operation and handling methods of the device are exactly the same as those in Example 5.

[0064] It should be understood that the above detailed description of the technical solutions of the present invention with reference to preferred embodiments is illustrative and not restrictive. Those skilled in the art, based on reading this specification, can modify the technical solutions described in the various embodiments or make equivalent substitutions for some of the technical features. For example, different functions can be achieved by changing the position of the notch in the multi-way valve core or changing the type of material liquid connected to the multi-way valve shell interface; by changing the number of channels in the corresponding multi-way valve core and the number of valve shell interfaces, the adsorption device can contain only one water washing channel, achieving water washing of only the raw material liquid or water washing of only the elution liquid; by merging the water washing raw material liquid interface and the water washing elution liquid interface of the multi-way valve shell into one interface, the valve body structure can be simplified and the number of material pumps reduced. Various changes and modifications can be made to the present invention without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of the present invention as claimed, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-position eight-way valve, comprising a valve core and a valve body, characterized in that, The valve body has 8 first interfaces and 4 second interfaces. The first interfaces are located at the top and / or bottom of the valve body, and the second interfaces are located on the side of the valve body. The valve core has 8 channels and multiple notches. Each channel has an inlet and an outlet. The valve core can rotate within the valve body. When the valve core is rotated, the inlet of the channel is always aligned with the first interface. Any two adjacent channel outlets can be connected to any two second interfaces. Furthermore, the notches of the valve core allow any two adjacent second interfaces of the valve body to be connected.

2. The multi-position eight-way valve according to claim 1, characterized in that, The multi-position eight-way valve is a twenty-position eight-way valve with an included angle of 18° between two adjacent second ports. The valve core has eight channels and six notches, and the valve core has twenty equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, eleventh, twelfth, fifteenth, and sixteenth equally divided positions, and the six notches are distributed between the third and fourth, seventh and eighth, ninth and tenth, thirteenth and fourteenth, seventeenth and eighteenth, nineteenth and twentieth equally divided positions. Alternatively, the multi-position eight-way valve may be an eighteen-position eight-way valve, with an included angle of 20° between two adjacent second ports. The valve core has eight channels and five notches, and the valve core has eighteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, fifteenth and sixteenth, and seventeenth and eighteenth equally divided positions. Alternatively, the multi-position eight-way valve may be a sixteen-position eight-way valve, with an included angle of 22.5° between two adjacent second ports. The valve core has eight channels and four notches, and the valve core has sixteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, thirteenth, and fourteenth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, eleventh and twelfth, and fifteenth and sixteenth equally divided positions.

3. The multi-position eight-way valve according to claim 1, characterized in that, The eight-way valve is a fourteen-position eight-way valve, with an included angle of (180 / 7)° between two adjacent second ports. The valve core has eight channels and three notches, and the valve core has fourteen equally divided positions. The channel outlets are distributed at the first, second, fifth, sixth, ninth, tenth, eleventh, and twelfth equally divided positions, and the notches are distributed between the third and fourth, seventh and eighth, and thirteenth and fourteenth equally divided positions. Alternatively, the multi-position eight-way valve may be a fourteen-position eight-way valve II, with an included angle of (180 / 7)° between two adjacent second ports. The valve core has eight channels and three notches, and the valve core has fourteen equally divided positions. The channel outlets are distributed at the first, second, third, fourth, seventh, eighth, ninth, and tenth equally divided positions, and the notches are distributed between the fifth and sixth, eleventh and twelfth, and thirteenth and fourteenth equally divided positions.

4. A novel adsorption device based on the multi-position eight-way valve of claim 1, characterized in that, It includes multiple adsorption columns and multiple multi-position eight-way valves connected to each adsorption column. Adsorption, washing or elution of different adsorption columns can be achieved by controlling the multi-position eight-way valves.

5. The novel adsorption device with one column and one valve according to claim 4, characterized in that, It includes n (n≥6) adsorption columns and n (n≥6) 20-position 8-way valves, wherein one adsorption column and one 20-position 8-way valve constitute an adsorption unit. The four second interfaces on the side of the 20-position 8-way valve body are q interface, r interface, s interface, and t interface, respectively. In each adsorption unit, the r interface and s interface of the 20-position 8-way valve are connected to the inlet and outlet of the adsorption column in that adsorption unit, respectively. The q interface of the 20-position 8-way valve in the first-stage adsorption unit is connected to the t interface of the 20-position 8-way valve in the last-stage adsorption unit. The t-port of the 20-position 8-way valve in the first-stage adsorption unit is connected to the q-port of the 20-position 8-way valve in the next-stage adsorption unit. When the device is running, the eight first ports of the valve body of the 20-position 8-way valve are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. By rotating the valve core of the corresponding 20-position 8-way valve clockwise or counterclockwise by 36° and / or 72°, the operating states of different adsorption columns can be switched.

6. The novel adsorption device with one column and one valve according to claim 4, characterized in that, The device includes five adsorption columns and five 18-way valves. Each adsorption column and each 18-way valve constitutes an adsorption unit. The four second ports on the side of the valve body of the 18-way valve are designated as q1, r1, s1, and t1. In each adsorption unit, the r1 and s1 ports of the 18-way valve are connected to the inlet and outlet of the adsorption column in that unit, respectively. The q1 port of the 18-way valve in the first-stage adsorption unit is connected to the t1 port of the 18-way valve in the last-stage adsorption unit. In other adsorption units, the t1 port of the 18-position 8-way valve is connected to the q1 port of the 18-position 8-way valve in the next adsorption unit. When the device is running, the eight first ports of the 18-position 8-way valve are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. By rotating the valve core of the corresponding 18-position 8-way valve clockwise or counterclockwise by 40° and / or 80°, the operating states of different adsorption columns can be switched.

7. The novel adsorption device with one column and one valve according to claim 4, characterized in that, It includes four adsorption columns and four 16-position 8-way valves, with one adsorption column and one 16-position 8-way valve constituting one adsorption unit. The four second interfaces on the side of the 16-position 8-way valve housing are designated as q2, r2, s2, and t2 interfaces. In each adsorption unit, the r2 and s2 interfaces of the 16-position 8-way valve are connected to the inlet and outlet of the adsorption column, respectively. The q2 interface of the 16-position 8-way valve in the first-stage adsorption unit is connected to the t2 interface of the 16-position 8-way valve in the last-stage adsorption unit. Other... The t2 port of the 16-position 8-way valve in the first-stage adsorption unit is connected to the q2 port of the 16-position 8-way valve in the next-stage adsorption unit. When the device is running, the eight first ports of the 16-position 8-way valve body are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. By rotating the valve core of the corresponding 16-position 8-way valve clockwise or counterclockwise by 45° and / or 90°, the operating states of different adsorption columns can be switched.

8. The novel adsorption device with one column and one valve according to claim 4, characterized in that, It includes three adsorption columns and three 14-position 8-way valves, with one adsorption column and one 14-position 8-way valve constituting one adsorption unit. The valve body of the 14-position 8-way valve has a q3 interface, an r3 interface, an s3 interface, and a t3 interface on its side. In each adsorption unit, the r3 interface and s3 interface of the 14-position 8-way valve are connected to the inlet and outlet of the adsorption column in that adsorption unit, respectively. In the first-stage adsorption unit, the q3 interface of the 14-position 8-way valve is connected to the t3 interface of the 14-position 8-way valve in the last-stage adsorption unit. In other adsorption units, the 14-position 8-way valves... The t3 port of the 8-way valve is connected to the q3 port of the 14-way valve in the next adsorption unit. When the device is running, the 8 first ports of the valve body of the 14-way valve are respectively the raw material inlet, raw material outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material, clean water outlet for washing raw material, clean water inlet for washing eluent, and clean water outlet for washing eluent. By rotating the valve core of the 14-way valve clockwise or counterclockwise by (360 / 7)° and / or (720 / 7)°, the operating states of different adsorption columns can be switched.

9. The novel adsorption device with one column and one valve according to claim 4, characterized in that, This includes n (n≥4) adsorption columns and n (n≥4) fourteen-position eight-way valves. Each adsorption unit consists of one adsorption column and one fourteen-position eight-way valve. The four secondary ports on the side of the fourteen-position eight-way valve are q4, r4, s4, and t4. In each adsorption unit, the r4 and s4 ports of the fourteen-position eight-way valve are connected to the inlet and outlet of the adsorption column, respectively. The q4 port of the fourteen-position eight-way valve in the first-stage adsorption unit is connected to the t4 port of the fourteen-position eight-way valve in the last-stage adsorption unit. The interfaces are connected; the t4 interface of the fourteen-position eight-way valve II in other adsorption units is connected to the q4 interface of the fourteen-position eight-way valve II in the next adsorption unit. When the device is running, the eight first interfaces of the valve body of the fourteen-position eight-way valve II are respectively the raw material liquid inlet, raw material liquid outlet, eluent inlet, eluent outlet, clean water inlet for washing raw material liquid, clean water outlet for washing raw material liquid, clean water inlet for washing eluent, and clean water outlet for washing eluent. By rotating the valve core of the corresponding fourteen-position eight-way valve II by a certain angle clockwise or counterclockwise, the operating state of different adsorption columns can be switched.

10. The novel adsorption device with one column and one valve according to claims 5-9, characterized in that, Each adsorption unit also includes a six-way valve with ports a, b, c, d, e, and f. Ports a and d of the six-way valve are connected to the inlet and outlet of the adsorption column in the adsorption unit, respectively. Port b of the six-way valve is connected to port r of the 20-position eight-way valve, port r2 of the 16-position eight-way valve, port r3 of the 14-position eight-way valve, or port r4 of the 14-position eight-way valve in the adsorption unit. Port c of the six-way valve is connected to port s of the 20-position eight-way valve, port s2 of the 16-position eight-way valve, port s3 of the 14-position eight-way valve, or port s4 of the 14-position eight-way valve in the adsorption unit. Ports e and f of the six-way valves in adjacent adsorption units are connected. Port f of the six-way valve in the first-stage adsorption unit and port e of the six-way valve in the last-stage adsorption unit are the inlet and outlet of the washing liquid, respectively. By rotating the valve core of the six-way valve in the corresponding adsorption unit clockwise or counterclockwise by 60°, the adsorption column in that adsorption unit is cut off.

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