CN218539385U

CN218539385U - High-efficient electric capacity adsorbs deionization device

Info

Publication number: CN218539385U
Application number: CN202223094959.5U
Authority: CN
Inventors: 汪国忠; 龚成云; 耿武松
Original assignee: Hefei Institutes of Physical Science of CAS; Luan Institute of Anhui Institute of Industrial Technology Innovation
Current assignee: Hefei Institutes of Physical Science of CAS; Luan Institute of Anhui Institute of Industrial Technology Innovation
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-02-28
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a high-efficiency capacitance adsorption deionization device, which comprises an adsorption cavity, a columnar liquid distribution pipe arranged in the adsorption cavity, a capacitance adsorption core sleeved outside the liquid distribution pipe, a liquid collection area arranged outside the capacitance adsorption core and a liquid purification outlet connected to the liquid collection area; the capacitor adsorption core comprises a plurality of electrode plates which are arranged in a laminated manner, and the electrode plates comprise positive electrode plates and negative electrode plates which are arranged in a staggered manner; the positive electrode plate and the negative electrode plate respectively comprise a sheet-shaped electrode substrate and an electrode material coated on the surface of the electrode substrate; the surface of the electrode substrate is set to be a wavy surface, and the electrode material is coated on the wavy surface to form a wavy electrode adsorption surface; the utility model discloses a high-efficient electric capacity adsorbs deionization device solves the defect that exists among the electric capacity adsorption equipment prior art, under the prerequisite that does not increase electric capacity deionization device's volume and size, increases the adsorption efficiency that electric capacity adsorbs the core, improves electric capacity deionization device's ion and gets rid of efficiency.

Description

High-efficient electric capacity adsorbs deionization device

Technical Field

The utility model belongs to electric capacity and condenser application, more specifically the high-efficient electric capacity adsorbs deionization unit that says so.

Background

The capacitive deionization technology is a technology that the surface of a charged electrode adsorbs positive and negative ions and charged particles in liquid, and is widely applied because the capacitive deionization technology is renewable and convenient and quick to regenerate. In the working process of the capacitive deionization device or system, the original liquid is acted by an electric field when flowing between the positive electrode and the negative electrode of the capacitor, positive ions and negative ions or charged particles in the liquid migrate to the electrodes with opposite charges respectively, are adsorbed and stored by the electrodes, and are separated from the liquid finally to obtain the purified liquid. When the adsorption of the electrode approaches or reaches saturation, the adsorption capacity is reduced or stopped, and at this time, the capacitor needs to be discharged, so that ions or charged particles stored on the electrode are separated and released into the channel, and the electrode is regenerated along with the discharge of backwash liquid. Therefore, the adsorption capacity of the electrodes in the capacitor is limited, regeneration needs to be performed regularly, and in order to improve the adsorption capacity of the capacitive deionization device, the size of a capacitive adsorption core of the capacitor is generally increased in the prior art, for example, the size of an electrode plate is increased, so that the size of the capacitive deionization device is increased, on one hand, the corresponding cost is increased, on the other hand, the capacitive deionization device with a large size is not beneficial to installation and arrangement, and the use place is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high-efficient electric capacity adsorbs deionizer solves the defect that exists among the electric capacity adsorption equipment prior art, under the prerequisite that does not increase electric capacity deionizer's volume and size, increases the adsorption efficiency that electric capacity adsorbs the core, improves electric capacity deionizer's ion removal ability, improves electric capacity deionizer's ion and gets rid of efficiency.

The technical scheme of the utility model is that the high-efficiency capacitor adsorption deionization device comprises an adsorption cavity, a columnar liquid distribution pipe arranged in the adsorption cavity, a capacitor adsorption core sleeved outside the liquid distribution pipe, a liquid collection area arranged outside the capacitor adsorption core and a clean liquid outlet connected to the liquid collection area; the capacitor adsorption core comprises a plurality of electrode plates which are arranged in a laminated manner, and the electrode plates comprise positive electrode plates and negative electrode plates which are arranged in a staggered manner; the positive electrode plate and the negative electrode plate respectively comprise a sheet-shaped electrode substrate and an electrode material coated on the surface of the electrode substrate; the surface of the electrode substrate is set to be a wavy surface, and the electrode material is coated on the wavy surface to form a wavy electrode adsorption surface.

Preferably, the electrode substrate is disc-shaped and is arranged coaxially with the liquid distribution pipe.

Preferably, in the electrode plates, two outermost electrode plates are end electrodes, and all the electrode plates positioned between the two end electrodes are double-sided electrodes; the end electrodes are single-sided electrodes, only the surfaces facing the adjacent electrode plates are coated with electrode materials, and the surfaces of the two end electrodes, which are not coated with the electrode materials, are respectively sealed with the two inner end surfaces of the adsorption cavity;

electrode materials are coated on the two surfaces of the double-sided electrode, and the electrode materials on the two surfaces of the same double-sided electrode are the same in polarity.

Preferably, the exterior of each electrode plate is wrapped by an ion exchange membrane, and ions with different polarities pass through the ion exchange membrane.

Preferably, the surface of the single-sided electrode facing the adjacent electrode plate is set to be a wavy surface, and the other surface of the single-sided electrode is a plane; the two surfaces of the double-sided electrode are both provided with wavy surfaces, and the wavy surfaces are formed by a plurality of circular grooves which are coaxial with the electrode substrate.

Preferably, the wavy surfaces of the adjacent electrode plates are arranged in a meshing manner.

Preferably, a lyophobic screen is arranged between two adjacent electrode plates.

Preferably, the liquid distribution pipe is cylindrical, one end of the liquid distribution pipe is arranged in the adsorption cavity and is sealed, the other end of the liquid distribution pipe extends out of the adsorption cavity and is set as a liquid inlet, liquid distribution holes are uniformly distributed in the side wall of the liquid distribution pipe, and the liquid distribution holes face the capacitor adsorption core.

Preferably, the adsorption cavity is a cylindrical cavity and is coaxial with the liquid distribution pipe, a plurality of discretely arranged supporting plates are arranged on the inner end face, close to the closed end of the liquid distribution pipe, in the adsorption cavity, first sealing plates are fixed on the supporting plates, an interlayer is formed between each first sealing plate and the corresponding inner end face of the adsorption cavity, and the first sealing plates are sealed with the corresponding single-sided electrode; a second sealing plate is arranged on the other inner end face of the adsorption cavity and is sealed with the other single-face electrode; the outer diameter of the first sealing plate is larger than that of the single-face electrode and is adaptive to the inner diameter of the adsorption cavity.

Preferably, the outer diameter of the capacitor adsorption core is smaller than the inner diameter of the adsorption cavity, the liquid collection region is formed between the outer side surface of the capacitor adsorption core and the inner side surface of the adsorption cavity, the first sealing plate is provided with a liquid passing hole, the liquid passing hole is arranged on the outer side of the single-side electrode and is communicated with the liquid collection region and the interlayer, and the purified liquid outlet is communicated with the interlayer; the liquid purifying outlet comprises a liquid outlet pipe, the liquid outlet pipe and the liquid distribution pipe are coaxially arranged, and the outer diameter of the liquid outlet pipe is matched with the inner diameter of the liquid distribution pipe; the outer cover of absorption chamber is equipped with the installation section of thick bamboo of coaxial setting, the drain pipe is worn out the installation section of thick bamboo, the tip that the absorption chamber was worn out to the liquid distributor with installation section of thick bamboo tip suits.

The utility model discloses technical scheme a high-efficient electric capacity adsorbs deionization equipment's beneficial effect is:

1. the surface of the electrode substrate is set to be a wavy surface, the electrode material is coated on the wavy surface to form a wavy electrode adsorption surface, the surface area of the electrode is increased under the condition that the size of the electrode substrate is unchanged, the effective adsorption area of the electrode material on the surface of the electrode is increased, the adsorption capacity of an electrode plate is increased, and the adsorption capacity of a capacitor adsorption deionization device is increased.

2. The surface of the electrode substrate is set to be a wavy surface, and the wavy surfaces on the adjacent electrode plates are arranged in a meshing manner, so that the length of a liquid path is prolonged, the contact time of the electrode plates and liquid is prolonged, and the removal rate and the removal efficiency of positive and negative ions or charged particles in stock solution are improved.

Drawings

Fig. 1 is a schematic diagram of an internal structure of a high-efficiency capacitive adsorption deionization device according to the technical scheme.

Fig. 2 is a schematic structural diagram of the electrode sheet according to the present technical solution, and only four electrode sheets are drawn in fig. 2 as an illustration.

Fig. 3 is a structure enlarged view of the adsorption core according to the technical solution of the present invention.

Fig. 4 is the installation schematic diagram of the adjacent electrode plates according to the technical scheme of the present invention.

Fig. 5 is the schematic diagram of the high-efficiency capacitor adsorption deionization device according to the technical solution of the present invention.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will now be further described with reference to the following specific embodiments and drawings.

As shown in fig. 1, the utility model provides a high-efficient electric capacity adsorbs deionization device, including adsorbing chamber 1, setting up a cylindrical liquid distribution pipe 2, the cover in adsorbing chamber 1 and establishing the electric capacity that the liquid distribution pipe 2 is outside adsorbs core 300, sets up at the outside collecting space 4 of electric capacity adsorption core 300 and the neat liquid export 5 of connection on collecting space 4. The capacitor adsorption core 300 includes a plurality of electrode sheets 3 arranged in a stacked manner, and the electrode sheets 3 include positive electrode sheets 31 and negative electrode sheets 32 arranged in a staggered manner.

Based on the above technical scheme, the stock solution is introduced from one end of the liquid distribution pipe 2, enters the adsorption cavity 1 through the liquid distribution pipe 2, and flows through the capacitor adsorption core 300 in the adsorption cavity 1, and cations and anions or charged particles in the stock solution are adsorbed by the positive electrode plate 31 and the negative electrode plate 32 of the capacitor adsorption core 300 and stored in the positive electrode plate 31 and the negative electrode plate 32, so that the cations and anions or charged particles are separated from the stock solution to obtain the purified solution, and finally the purified solution is discharged from the liquid collection area 4 and the purified solution outlet 5.

As shown in fig. 1 and 3, each of the positive electrode sheet 31 and the negative electrode sheet 32 includes an electrode base 30 in a sheet shape and an electrode material 301 coated on a surface of the electrode base 30. As shown in fig. 2, the surface of the electrode base 30 is provided as a wavy surface 35, and an electrode material 301 is coated on the wavy surface 35 to form a wavy electrode suction surface.

Based on the above technical scheme, the surface of the electrode substrate 30 is set to be the wavy surface 35, and meanwhile, the wavy electrode adsorption surface is obtained, so that on the premise that the size of the electrode substrate 30 is not increased, the surface area of the electrode substrate 30 is increased, that is, the surface area of the electrode adsorption surface is increased, and the adsorption capacity of the electrode plate 3 on ions is increased. The design of wave face structure among this technical scheme promptly, on the premise that electric capacity adsorbs core 300 and electric capacity adsorbs deionization apparatus size or volume not increase, improved electric capacity and adsorbed core 300 and electric capacity and adsorbed the adsorption efficiency of deionization apparatus to positive and negative ion and band point particle in the stoste, prolonged electric capacity and adsorbed deionization apparatus's adsorption time, prolonged electric capacity and adsorbed deionization apparatus and carried out the interval time of regeneration, improved electric capacity and adsorbed deionization apparatus's adsorption efficiency.

As shown in fig. 4, the wavy surfaces 35 of the adjacent electrode plates 3 are arranged in a meshing manner, so that a wavy liquid flow channel is formed between the adjacent electrode plates 3, and compared with a planar electrode plate, the liquid flow channel is extended, that is, the contact time between the stock solution and the electrode plates is prolonged, so that the capacitor adsorption core 300 can completely adsorb ions in the stock solution, and the removal rate of the ions in the stock solution is improved.

Among this technical scheme, electrode base member 30 is the disk form, and with the coaxial setting of cloth liquid pipe 2, the electrode adsorption surface that is formed by the electrode material of coating on discoid electrode base member 30 also is circular, liquid flows out the back by cloth liquid pipe 2 like this, along circular shape electrode adsorption surface outdiffusion, the liquid surface area crescent, the velocity of flow reduces on the one hand, extension liquid and electrode slice contact time, ensure that ion has sufficient time in the liquid and is adsorbed by the electrode, on the other hand local flow reduces, local ion quantity in the unit area has been reduced like this, ensure that the ion can be adsorbed by electrode material 301. Meanwhile, the arrangement of the wafer-shaped electrode substrate and the electrode plates and the arrangement of the cylindrical liquid distribution pipe arranged at the center of the electrode plates are integrated, so that the hydraulic pressure on the side close to the center of the electrode plates is large, and the raw liquid is favorably discharged smoothly along the space between the two electrode plates.

In the present technical solution, as shown in fig. 2, in the electrode sheets 3, two outermost electrode sheets are end electrodes 33, and all electrode sheets located between the end electrodes 33 are double-sided electrodes 34, and only four electrode sheets are drawn in fig. 2 as an illustration. The terminal electrode 33 is a single-sided electrode, and only the surface facing the adjacent electrode sheet 3 is coated with the electrode material 301, and the surfaces of the two terminal electrodes 33 which are not coated with the electrode material 301 are respectively sealed with the two inner end surfaces of the adsorption cavity 1. Both surfaces of the double-sided electrode 34 are coated with the electrode material 301, and the electrode material 301 on both surfaces of the same double-sided electrode 34 have the same polarity.

Based on the above technical solutions, in order to facilitate understanding of the terminal electrode and the double-sided electrode in the above technical solutions, as shown in fig. 3, an embodiment regarding the terminal electrode and the double-sided electrode is proposed. In this embodiment, the uppermost end electrode is connected to a positive electrode, which is a positive electrode, and the lower double-sided electrode is connected to a negative electrode, which is a negative electrode. The surface of the terminal electrode at the top, which is far away from the double-sided electrode at the lower part, is sealed with the adsorption cavity, and the surface of the terminal electrode at the bottom, which is far away from the adjacent double-sided electrode, is also sealed with the adsorption cavity in the same way. On both end electrodes, the surface facing the adjacent double-sided electrode is coated with an electrode material 301, and both surfaces of the double-sided electrode are coated with the electrode material 301.

In the technical scheme, as shown in fig. 3, the exterior of the electrode plate 3 is wrapped by an ion exchange membrane 302, and ions with different polarities from the electrode plate 3 pass through the ion exchange membrane 302. That is, as shown in fig. 4, there are a positive electrode sheet 31 and a negative electrode sheet 32, the surface of the positive electrode sheet 31 facing the negative electrode sheet 32 is provided with an anion exchange membrane 3021, and the side of the negative electrode sheet 32 facing the positive electrode sheet 31 is provided with a cation exchange membrane 3022. And because the two surfaces of the double-sided electrode 34 are coated with the electrode materials 301, the electrode materials 301 on the two surfaces of the same double-sided electrode 34 have the same polarity, that is, the ion exchange membranes arranged on the two surfaces of one electrode plate are the same, that is, the ion exchange membranes are the same or the cation exchange membranes, so that the electrode substrate and the electrode materials can be completely wrapped by the ion exchange membranes, thereby avoiding the formation of gaps between the ion exchange membranes and the electrode materials, avoiding the liquid from passing through and entering between the ion exchange membranes and the electrode materials, prolonging the activity of the electrode materials, and prolonging the backwashing cycle time of the electrode materials. If have the gap between ion exchange membrane and electrode material, if this electrode piece is positive electrode piece, positive electrode piece outside sets up anion exchange membrane, if there is the gap between this anion exchange membrane and this positive electrode piece, the positive ion in the stoste will get into between this anion exchange membrane and this positive electrode piece by the gap position, and in long-time work, the positive ion piles up on positive electrode piece's electrode material, influences positive electrode piece to the adsorption efficiency of anion to shorten original positive electrode piece adsorption time. In the technical scheme, the polarities on the two surfaces of the same electrode plate are the same, so that the electrode plate can be completely wrapped by an ion exchange membrane, and the occurrence or existence of the gap is avoided.

In the present embodiment, as shown in fig. 2 and 3, the surface of the single-sided electrode (terminal electrode 33) facing the adjacent electrode sheet 3 is a wavy surface 35, and the other surface of the single-sided electrode is a flat surface. Both surfaces of the double-sided electrode 34 are provided as wavy surfaces 35. The undulating surface 35 is formed by a plurality of circular grooves 351 arranged coaxially with the electrode base 30. The general wavy surface is formed by cutting grooves on a plane, and the processing and the forming are simple. The vertex angle of the wavy surface 35 is set to be a circular arc angle.

As shown in fig. 3 and 4, a lyophobic screen 7 is disposed between two adjacent electrode sheets 3. The lyophobic and isolating net 7 provides a flow passage for liquid, so that the liquid can flow conveniently.

As shown in fig. 1, the liquid distribution tube 2 is cylindrical, and one end of the liquid distribution tube is disposed in the adsorption cavity 1 and is closed, and the other end of the liquid distribution tube extends out of the adsorption cavity 1 and is provided as a liquid inlet 20. Liquid distribution holes 21 are uniformly distributed on the side wall of the liquid distribution pipe 2, and the liquid distribution holes 21 face the capacitor adsorption core 300. The arrangement of the liquid distribution pipe 2 and the liquid distribution holes 21 is adopted, so that liquid is uniformly fed.

In the technical solution, as shown in fig. 1, the adsorption cavity 1 is a cylindrical cavity and is arranged coaxially with the liquid distribution tube 2. A plurality of discretely arranged supporting plates 9 are arranged on the inner end surface of the adsorption cavity 1 close to the closed end of the liquid distribution pipe 2, and a first sealing plate 12 is fixed on the supporting plates 9. An interlayer 14 is formed between the first sealing plate 12 and the inner end face of the adsorption chamber 1, and the first sealing plate 12 is sealed with the single-sided electrode (end electrode 33). A second sealing plate 11 is arranged on the other inner end face of the adsorption cavity 1, and the second sealing plate 11 is sealed with the other single-face electrode (end electrode). The surface of the two-sided electrode far away from the two-sided electrode is sealed with the adsorber, so that liquid is prevented from passing through the side surface of the two-sided electrode far away from the end electrode, and the adsorption blank area is avoided.

In this embodiment, as shown in fig. 1, the outer diameter of the first sealing plate 12 is larger than the outer diameter of the single-sided electrode and is adapted to the inner diameter of the adsorption cavity 1. The outer diameter of the capacitor adsorption core 300 is smaller than the inner diameter of the adsorption cavity 1, and a liquid collection area 4 is formed between the outer side surface of the capacitor adsorption core 300 and the inner side surface of the adsorption cavity 1. The first sealing plate 12 is provided with a liquid passing hole 13. The liquid passing hole 13 is arranged on the outer side of the single-side electrode and is communicated with the liquid collecting area 4 and the interlayer 14, and the purified liquid outlet 5 is communicated with the interlayer 14. The arrangement of the liquid collecting area 4 is convenient for collecting the clean liquid, and the outflow speed of the clean liquid is improved.

In the present embodiment, as shown in fig. 1, the clean liquid outlet 5 includes a liquid outlet pipe 51, and the liquid outlet pipe 51 and the liquid distribution pipe 2 are coaxially disposed. And the outer diameter of the liquid outlet pipe 51 is matched with the inner diameter of the liquid distribution pipe 2. The outer sleeve of absorption chamber 1 is equipped with the coaxial installation section of thick bamboo 8 that sets up, and drain pipe 51 is worn out installation section of thick bamboo 8. The end of the liquid distribution pipe 2 which penetrates out of the adsorption cavity 1 is matched with the end of the mounting cylinder 8. The outer diameter of the liquid outlet pipe 51 and the inner diameter of the liquid distribution pipe 2 are designed to be suitable for connecting a plurality of high-efficiency capacitive adsorption deionization devices in series, as shown in fig. 5, a schematic diagram of a series structure of two high-efficiency capacitive adsorption deionization devices 100 is shown. In some fields, the requirement on the ion removal rate is high, under the condition that the size of a single high-efficiency capacitance adsorption deionization device is certain, the removal rate of the single high-efficiency capacitance adsorption deionization device 100 cannot meet the requirement, at the moment, a plurality of high-efficiency capacitance adsorption deionization devices can be connected in series, and the removal rate is improved.

The technical solution of the present invention is to combine the above embodiment and the accompanying drawings to carry out the exemplary description of the utility model, obviously the present invention is not limited by the above mode, as long as the present invention is adopted, the method concept and the technical solution of the present invention are carried out various insubstantial improvements, or the concept and the technical solution of the present invention are directly applied to other occasions without improvement, all within the protection scope of the present invention.

Claims

1. A high-efficiency capacitive adsorption deionization device is characterized by comprising an adsorption cavity, a columnar liquid distribution pipe arranged in the adsorption cavity, a capacitive adsorption core sleeved outside the liquid distribution pipe, a liquid collection area arranged outside the capacitive adsorption core and a clean liquid outlet connected to the liquid collection area; the capacitor adsorption core comprises a plurality of electrode plates which are arranged in a laminated manner, and the electrode plates comprise positive electrode plates and negative electrode plates which are arranged in a staggered manner; the positive electrode plate and the negative electrode plate respectively comprise a sheet-shaped electrode substrate and an electrode material coated on the surface of the electrode substrate; the surface of the electrode substrate is set to be a wavy surface, and the electrode material is coated on the wavy surface to form a wavy electrode adsorption surface.

2. The efficient capacitive adsorption deionization device as claimed in claim 1, wherein the electrode substrate is disk-shaped and is disposed coaxially with the liquid distribution tube.

3. The efficient capacitive adsorption deionization device according to claim 1, wherein the two outermost electrode sheets among the electrode sheets are end electrodes, and all the electrode sheets positioned between the two end electrodes are double-sided electrodes; the end electrodes are single-sided electrodes, only the surfaces facing the adjacent electrode plates are coated with electrode materials, and the surfaces of the two end electrodes, which are not coated with the electrode materials, are respectively sealed with the two inner end surfaces of the adsorption cavity;

4. The efficient capacitive adsorption deionization device according to claim 3, wherein the electrode plates are all wrapped with ion exchange membranes, and ions with different polarities pass through the ion exchange membranes.

5. The efficient capacitive adsorption deionization device according to claim 3, wherein the surface of the single-sided electrode facing the adjacent electrode sheet is provided with a wavy surface, and the other surface of the single-sided electrode is a plane; the two surfaces of the double-sided electrode are both provided with wavy surfaces, and the wavy surfaces are formed by a plurality of circular grooves which are coaxial with the electrode substrate.

6. The efficient capacitive adsorption deionization device of claim 5, wherein the wavy surfaces of adjacent electrode sheets are arranged in a snap-in manner.

7. The efficient capacitive adsorption deionization device according to claim 1, wherein a lyophobic screen is disposed between two adjacent electrode plates.

8. The efficient capacitive adsorption deionization device according to claim 1, wherein the liquid distribution tube is cylindrical, one end of the liquid distribution tube is arranged in the adsorption cavity and is sealed, the other end of the liquid distribution tube extends out of the adsorption cavity and is provided with a liquid inlet, liquid distribution holes are uniformly distributed in the side wall of the liquid distribution tube, and the liquid distribution holes face the capacitive adsorption core.

9. The efficient capacitive adsorption deionization device according to claim 8, wherein the adsorption cavity is a cylindrical cavity and is coaxially arranged with the liquid distribution pipe, a plurality of discretely arranged support plates are arranged on the inner end surface of the adsorption cavity close to the closed end of the liquid distribution pipe, first sealing plates are fixed on the support plates, an interlayer is formed between each first sealing plate and the inner end surface of the adsorption cavity close to the first sealing plate, and the first sealing plates are sealed with the single-sided electrodes close to the first sealing plate; a second sealing plate is arranged on the other inner end face of the adsorption cavity and is sealed with the other single-face electrode; the outer diameter of the first sealing plate is larger than the outer diameter of the single-sided electrode and is adapted to the inner diameter of the adsorption cavity.

10. The efficient capacitive adsorption deionization device according to claim 9, wherein the outer diameter of the capacitive adsorption core is smaller than the inner diameter of the adsorption cavity, the liquid collection region is formed between the outer side surface of the capacitive adsorption core and the inner side surface of the adsorption cavity, the first sealing plate is provided with liquid passing holes, the liquid passing holes are formed in the outer side of the single-sided electrode and communicate the liquid collection region with the interlayer, and the purified liquid outlet is communicated with the interlayer; the liquid purifying outlet comprises a liquid outlet pipe, the liquid outlet pipe and the liquid distribution pipe are coaxially arranged, and the outer diameter of the liquid outlet pipe is matched with the inner diameter of the liquid distribution pipe; the outer portion of the adsorption cavity is sleeved with a coaxially arranged installation barrel, the liquid outlet pipe penetrates out of the installation barrel, and the end portion of the liquid distribution pipe, which penetrates out of the adsorption cavity, is matched with the end portion of the installation barrel.