Filter element mounting structure of filter thickener

Abstract

The invention discloses a filter element mounting structure of a filter concentrator, which comprises a filter element mounting pipe, the filter element mounting pipe is provided with a plurality of filter element mounting pipe side joints, and the end part of the filter element is provided with the filter element side joints; each filter element side connector is provided with an axial through hole capable of containing the corresponding filter element installation pipe side connector, the inner side end of each axial through hole is communicated with an inner cavity of the corresponding filter element, and the outer side end of each axial through hole extends to the end face of the corresponding filter element side connector. An inner threaded hole is formed in the hole channel of the axial through hole close to the inner side end, and a counterbore is formed in the hole channel close to the outer side end; the filter element installation pipe side connector is provided with a pipe nozzle capable of being contained in the corresponding axial through hole, an outer threaded rod matched with the corresponding inner threaded hole is formed in the outlet position of the pipe nozzle, a sealing ring installation flange matched with the corresponding counter bore is formed in the root position of the pipe nozzle, and the sealing ring installation flange is sleeved with a sealing ring. The problem that the threads are eroded by stock solution and impurities is solved, and the filter element is convenient to install and replace.

Description

Technical Field

[0001] The invention relates to a filter element installation structure of a filter concentrator and a filter concentrator. The filter concentrator is suitable for filtering the liquid after the crystallization reaction of a precursor of a positive electrode material of a secondary battery, such as the coprecipitation reaction of a ternary precursor, so as to concentrate the crystal particles. Background Art

[0002] A filter concentrator is a device that integrates filtering and concentrating functions. It is suitable for filtering the liquid after the crystallization reaction of the precursor of the positive electrode material of a secondary battery, such as the co-precipitation reaction of the ternary precursor, so as to concentrate the crystalline particles. The applicant disclosed in the patent document with the publication number CN116078332A: The filter concentrator includes: a cylinder, a stirring device and a filtering device; the stirring device includes a drive assembly, a rotating shaft assembly and a paddle assembly, the drive assembly is installed on the upper end face of the cylinder, the upper end of the rotating shaft assembly is connected to the drive assembly and the lower end extends into the cylinder, and the paddle assembly is installed on the rotating shaft assembly; the filtering device includes at least one group of filter elements, at least one group of filter elements is installed inside the cylinder and is located beside the rotating shaft assembly and / or the paddle assembly, at least one group of filter elements is connected to the clear liquid output pipeline, and the clear liquid output The pipeline extends to the outside of the cylinder; the filter device adopts a filter element installation structure, which includes a filter element installation tube extending circumferentially along the inner wall of the cylinder of the filter concentrator, and the filter element installation tube is provided with a clear liquid output structure and a plurality of filter element installation tube side joints arranged at intervals along the length direction of the filter element installation tube. The plurality of filter element installation tube side joints are respectively used to install the filter element and guide the clear liquid output by the corresponding filter element into the filter element installation tube and discharge it through the clear liquid output part. The end of the filter element is provided with a filter element side joint, and the filter element side joint is adapted to be connected with the corresponding filter element installation tube side joint. The above-mentioned filter concentrator stirs the original liquid through the stirring device in the cylinder, and filters and separates it through the filter element at the same time. The above-mentioned filter element installation structure directly affects the filtering effect and operation reliability of the equipment.

[0003] In the filter element installation structure of the existing filter concentrator, the filter element side joint usually adopts an external thread structure, which cooperates with the internal thread hole on the filter element installation pipe side joint. It was found during use that the above filter element installation structure mainly has the following problems: First, the raw liquid on the outside of the filter element will directly contact the threaded mating part, which makes it easy to leak at the threaded connection. Especially when the stirring device is working, the stirring of the shaft assembly and the paddle assembly will produce pressure fluctuations, exacerbating the risk of leakage. Impurities in the raw liquid outside the filter element can easily enter the threaded meshing area, causing thread wear and affecting the sealing and reliability of the connection. As the use time increases, the thread fit will gradually loosen and the clear liquid may be contaminated. Second, the installation and replacement of the filter element is inconvenient. Since the filter element side joint is an external thread structure, it is easy to interfere with other components during the disassembly and assembly process, and it is difficult to ensure the accurate alignment of the thread. Third, when the filter element side joint adopts an external thread structure, the diameter of the filter element side joint is limited, resulting in insufficient strength of the filter element side joint. During the operation of the filter concentrator, the vibration generated by the stirring device will cause the filter element side joint with the external thread structure to produce micro-motion, accelerating the wear and loosening of the threaded connection and affecting the stable operation of the equipment. Summary of the invention

[0004] The object of the present invention is to provide a filter element installation structure of a filter concentrator and a filter concentrator, and to solve the technical problems mentioned in the above background technology.

[0005] In a first aspect, a filter element installation structure of a filter concentrator is provided, comprising a filter element installation tube extending circumferentially along the inner wall of a cylinder of the filter concentrator, the filter element installation tube is provided with a clear liquid output structure and a plurality of filter element installation tube side joints arranged at intervals along the length direction of the filter element installation tube, the plurality of filter element installation tube side joints are respectively used to install the filter element and guide the clear liquid outputted by the corresponding filter element into the filter element installation tube and discharge it through the clear liquid output part, the end of the filter element is provided with a filter element side joint, the filter element side joint is adaptively connected with the corresponding filter element installation tube side joint; the filter element side joint has an axial through hole which can accommodate the corresponding filter element installation tube side joint, and the inner end of the axial through hole is provided with a filter element side joint. The outer end of the axial through hole is connected to the inner cavity of the corresponding filter element and extends to the end face of the filter element side joint. The channel of the axial through hole is formed with an internal threaded hole near its inner end and a countersunk hole is formed near its outer end; the filter element mounting pipe side joint has a nozzle that can be accommodated in the corresponding axial through hole, the outlet position of the nozzle forms an external threaded rod that matches the corresponding internal threaded hole, and the root position forms a sealing ring mounting flange that matches the corresponding countersunk hole, the sealing ring mounting flange is sleeved with a sealing ring, and the sealing ring is located between the corresponding countersunk hole and the corresponding sealing ring mounting flange when working, thereby isolating the external raw liquid of the filter element from the internal threaded hole and the external threaded rod that match each other.

[0006] The second aspect provides a filtering concentrator, comprising: a cylinder; a stirring device, comprising a driving assembly, a rotating shaft assembly and a paddle assembly, wherein the driving assembly is mounted on the upper end surface of the cylinder, the upper end of the rotating shaft assembly is connected to the driving assembly and the lower end extends into the cylinder, and the paddle assembly is mounted on the rotating shaft assembly; a filtering device, comprising at least one group of filter elements, wherein the at least one group of filter elements is mounted inside the cylinder and is located beside the rotating shaft assembly and / or the paddle assembly, the at least one group of filter elements is connected to a clear liquid output pipeline, and the clear liquid output pipeline extends to the outside of the cylinder; the filtering device adopts a filter element mounting structure, wherein the filter element mounting structure comprises a filter element mounting tube extending circumferentially along the inner wall of the cylinder, the filter element mounting tube is provided with a clear liquid output structure and a plurality of filter element mounting tube side joints arranged at intervals along the length direction of the filter element mounting tube, the plurality of filter element mounting tube side joints are respectively used to install the filter element and output the clear liquid output of the corresponding filter element The liquid is introduced into the filter element installation tube and discharged through the clear liquid output part. The end of the filter element is provided with a filter element side joint, and the filter element side joint is adaptably connected with the corresponding filter element installation tube side joint; the filter element side joint has an axial through hole that can accommodate the corresponding filter element installation tube side joint, the inner side end of the axial through hole is connected with the inner cavity of the corresponding filter element, and the outer side end of the axial through hole extends to the end surface of the filter element side joint, and the channel of the axial through hole is formed with an internal threaded hole near its inner side end and a countersunk hole is formed near its outer side end; the filter element installation tube side joint has a nozzle that can be accommodated in the corresponding axial through hole, the outlet position of the nozzle forms an external threaded rod that is adapted to the corresponding internal threaded hole, and the root position forms a sealing ring installation flange that is adapted to the corresponding countersunk hole, and the sealing ring is sleeved on the sealing ring installation flange. When the sealing ring is working, it is located between the corresponding countersunk hole and the corresponding sealing ring installation flange, so as to isolate the original liquid outside the filter element from the internal threaded hole and the external threaded rod that are adapted to each other.

[0007] An axial through hole that can accommodate the filter element mounting pipe side joint is provided on the filter element side joint, and an internal threaded hole and a countersunk hole are formed in the through hole respectively, and an external threaded rod and a sealing ring mounting flange are correspondingly provided on the nozzle of the filter element mounting pipe side joint, so that the threaded mating part is completely isolated from the raw liquid outside the filter element by the sealing ring, which not only solves the problem of erosion of the raw liquid and impurities on the thread, but also provides a reliable sealing effect through the cooperation of the sealing ring and the countersunk hole; in addition, since the filter element side joint adopts a sleeve structure with a larger outer diameter, its structural strength is significantly improved, which can effectively resist the vibration generated by the stirring device and prevent micro-motion and loosening; at the same time, this internal threaded mating structure also facilitates the installation and replacement operations of the filter element, avoids interference with other components, and improves the operating reliability and maintenance convenience of the filter concentrator.

[0008] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings constituting a part of this specification are used to assist the understanding of the present invention. The contents provided in the drawings and the related descriptions in this specification can be used to explain the present invention, but do not constitute improper limitations on the present invention.

[0010] Figure 1 Schematic diagram of the filter element installation structure of the filter concentrator according to the first embodiment of the present invention.

[0011] Figure 2 for Figure 1 Axial view of the connector on the center element side.

[0012] Figure 3 It is a schematic diagram of the filter element installation structure of the filter concentrator according to the second embodiment of the present invention.

[0013] Figure 4 It is a schematic diagram of the filter element installation structure of the filter concentrator according to the third embodiment of the present invention.

[0014] Figure 5 for Figure 4 Axial view of the connector on the center element side.

[0015] Markings in the figure are: 1-filter element mounting tube, 2-filter element mounting tube side joint, 21-external threaded rod, 22-sealing ring mounting flange, 23-sealing ring axial positioning flange, 24-filter element side joint axial positioning flange, 3-filter element, 4-filter element side joint, 41-axial through hole, 411-internal threaded hole, 412-countersunk hole, 5-sealing ring, 6-heat dissipation groove. DETAILED DESCRIPTION

[0016] The present invention is described clearly and completely below in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0017] The technical solutions and technical features provided in each section, including the following description, can be combined with each other without conflict. In addition, where possible, these technical solutions, technical features and related combinations can be assigned specific technical themes and protected by relevant patents.

[0018] The embodiments of the present invention involved in the following description are generally only a part of the embodiments rather than all the embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of patent protection.

[0019] Regarding the terms and units in this specification: The terms "include", "comprises", "have" and any variations thereof in this specification and the corresponding claims and related parts are intended to cover non-exclusive inclusions. In addition, other relevant terms and units can be reasonably interpreted based on the relevant content provided in this specification.

[0020] Figure 1 Schematic diagram of the installation structure of the filter element 3 of the filter concentrator according to the first embodiment of the present invention. Figure 2 for Figure 1 Axial view of the connector on the 3 side of the middle filter element. Figure 1-Figure 2 As shown, the filter element 3 installation structure of the filter concentrator comprises a filter element 3 installation tube extending circumferentially along the inner wall of the cylinder of the filter concentrator, the filter element 3 installation tube is provided with a clear liquid output structure and a plurality of filter element 3 installation tube side joints arranged at intervals along the length direction of the filter element 3 installation tube, the plurality of filter element 3 installation tube side joints are respectively used to install the filter element 3 and introduce the clear liquid outputted by the corresponding filter element 3 into the filter element 3 installation tube and discharge it through the clear liquid output part, the end of the filter element 3 is provided with a filter element 3 side joint, the filter element 3 side joint is adaptively connected with the corresponding filter element 3 installation tube side joint; the filter element 3 side joint has an axial through hole 41 which can accommodate the corresponding filter element 3 installation tube side joint, the inner side end of the axial through hole 41 is connected with the inner cavity of the corresponding filter element 3 and the outer side end of the axial through hole 41 extends to On the end face of the side joint of the filter element 3, an internal threaded hole 411 is formed in the channel of the axial through hole 41 near its inner end, and a countersunk hole 412 is formed near its outer end; the filter element 3 installation pipe side joint has a nozzle that can be accommodated in the corresponding axial through hole 41, and the outlet position of the nozzle forms an external threaded rod filter element 3 installation pipe side joint 21 that is compatible with the corresponding internal threaded hole 411, and the root position forms a sealing ring 5 installation flange 22 that is compatible with the corresponding countersunk hole 412, and the sealing ring 5 installation flange 22 is sleeved with a sealing ring 5, and the sealing ring 5 is located between the corresponding countersunk hole 412 and the corresponding sealing ring 5 installation flange 22 when working, thereby isolating the external raw liquid of the filter element 3 from the internal threaded hole 411 and the external threaded rod filter element 3 installation pipe side joint 21 that are compatible with each other.

[0021] An axial through hole 41 capable of accommodating the filter element 3 installation pipe side joint is provided on the filter element 3 side joint, and an internal threaded hole 411 and a countersunk hole 412 are respectively formed in the through hole, and an external threaded rod filter element 3 installation pipe side joint 21 and a sealing ring 5 installation flange 22 are correspondingly provided on the nozzle of the filter element 3 installation pipe side joint, so that the threaded fitting part is completely isolated from the raw liquid outside the filter element 3 by the sealing ring 5, which not only solves the problem of corrosion of the raw liquid and impurities on the thread, but also provides a reliable sealing effect through the cooperation between the sealing ring 5 and the countersunk hole 412; in addition, since the filter element 3 side joint adopts a sleeve structure with a larger outer diameter, its structural strength is significantly improved, which can effectively resist the vibration generated by the stirring device and prevent micro-movement and loosening; at the same time, this internal threaded fitting structure also facilitates the installation and replacement operation of the filter element 3, avoids interference with other components, and improves the operating reliability and maintenance convenience of the filter concentrator.

[0022] Among them, the inner end of the channel of the countersunk hole 412 close to the axial through hole 41 is a tapered channel, and the outer end of the channel of the countersunk hole 412 close to the axial through hole 41 is a cylindrical channel, and the cylindrical channel is connected with the large end of the corresponding tapered channel; the nozzle is provided with an axial positioning flange 23 of the sealing ring 5 at the bottom position of the sealing ring 5 mounting flange 22, and the sealing ring 5 is axially pressed in the space defined by the corresponding tapered channel, the corresponding cylindrical channel, the corresponding sealing ring 5 mounting flange 22 and the corresponding sealing ring 5 axial positioning flange 23 when working.

[0023] By designing the countersunk hole 412 as a combination structure of an inner conical channel and an outer cylindrical channel, and providing an axial positioning flange 23 of the sealing ring 5 on the nozzle, the sealing ring 5 can be accurately pressed in the space defined by these four structural parts when the sealing ring 5 mounting flange 22 is tightened, wherein the conical channel can guide the sealing ring 5 to undergo radial deformation, while the cylindrical channel provides stable radial support, and cooperates with the axial compression effect of the sealing ring 5 mounting flange 22 and the sealing ring 5 axial positioning flange 23 to form a reliable three-dimensional sealing effect.

[0024] In addition, in this embodiment, the outer peripheral wall of the filter element 3 side joint has a rotation-carrying structure. Specifically, the rotation-carrying structure is an external hexagonal head. The external hexagonal head is provided on the outer peripheral wall of the filter element 3 side joint as the rotation-carrying structure, which can facilitate the operator to use a standard wrench to install and remove the filter element 3. At the same time, the external hexagonal structure provides a larger torque transmission area, avoiding damage to the filter element 3 side joint during the tightening process, and ensuring the reliability of the connection.

[0025] In addition, in this embodiment, a heat dissipation groove 6 is provided on the outer peripheral wall of the filter element 3 side joint. Providing the heat dissipation groove 6 on the outer peripheral wall of the filter element 3 side joint can increase the heat dissipation area and accelerate the heat dissipation around the filter element 3 side joint, which is of great significance for the stable operation of the filter concentrator under high temperature conditions, and can also prevent local overheating from causing adverse effects on the sealing ring 5.

[0026] In addition, in this embodiment, the diameter of the outer peripheral wall of the filter element 3 side joint is equal to the outer diameter of the filter cartridge part of the filter element 3. The outer peripheral wall diameter of the filter element 3 side joint is designed to be equal to the outer diameter of the filter cartridge part of the filter element 3. This structural design not only ensures sufficient strength and rigidity, but also avoids local protrusions that affect installation, and also facilitates the manufacture and processing of the filter element 3, improving the consistency and interchangeability of the products.

[0027] Figure 3 Schematic diagram of the installation structure of the filter element 3 of the filter concentrator according to the second embodiment of the present invention. Figure 3 As shown, the filter element 3 installation structure of the filter concentrator comprises a filter element 3 installation tube extending circumferentially along the inner wall of the cylinder of the filter concentrator, the filter element 3 installation tube is provided with a clear liquid output structure and a plurality of filter element 3 installation tube side joints arranged at intervals along the length direction of the filter element 3 installation tube, the plurality of filter element 3 installation tube side joints are respectively used to install the filter element 3 and introduce the clear liquid outputted by the corresponding filter element 3 into the filter element 3 installation tube and discharge it through the clear liquid output part, the end of the filter element 3 is provided with a filter element 3 side joint, the filter element 3 side joint is adaptively connected with the corresponding filter element 3 installation tube side joint; the filter element 3 side joint has an axial through hole 41 which can accommodate the corresponding filter element 3 installation tube side joint, the inner side end of the axial through hole 41 is connected with the inner cavity of the corresponding filter element 3 and the outer side end of the axial through hole 41 extends to On the end face of the side joint of the filter element 3, an internal threaded hole 411 is formed in the channel of the axial through hole 41 near its inner end, and a countersunk hole 412 is formed near its outer end; the filter element 3 installation pipe side joint has a nozzle that can be accommodated in the corresponding axial through hole 41, and the outlet position of the nozzle forms an external threaded rod filter element 3 installation pipe side joint 21 that is compatible with the corresponding internal threaded hole 411, and the root position forms a sealing ring 5 installation flange 22 that is compatible with the corresponding countersunk hole 412, and the sealing ring 5 installation flange 22 is sleeved with a sealing ring 5, and the sealing ring 5 is located between the corresponding countersunk hole 412 and the corresponding sealing ring 5 installation flange 22 when working, thereby isolating the external raw liquid of the filter element 3 from the internal threaded hole 411 and the external threaded rod filter element 3 installation pipe side joint 21 that are compatible with each other.

[0028] Specifically, in this embodiment, the nozzle is provided with an axial positioning flange 24 of the filter element 3 side joint at the bottom of the sealing ring 5 mounting flange 22, and the axial positioning flange 24 of the filter element 3 side joint is used for contacting and positioning with the corresponding end surface. In addition, two sealing rings 5 ​​are axially spaced apart on the sealing ring 5 mounting flange 22.

[0029] By arranging the axial positioning flange 24 of the filter element 3 side joint on the nozzle, accurate axial positioning can be formed with the end face of the filter element 3 side joint during the installation process, avoiding the filter element 3 side joint from being installed too tight or too loose, and at the same time, two sealing rings 5 ​​are axially spaced apart on the sealing ring 5 mounting flange 22, forming double sealing protection, even if one sealing ring 5 is aged or damaged, the other sealing ring 5 can still maintain the sealing effect, further improving the sealing reliability of the filter element 3 mounting structure during the long-term operation of the filter concentrator.

[0030] In addition, in this embodiment, the outer peripheral wall of the filter element 3 side joint has a rotating structure. Specifically, the rotating structure is an external hexagonal head. A heat dissipation groove 6 is also provided on the outer peripheral wall of the filter element 3 side joint. In addition, the diameter of the outer peripheral wall of the filter element 3 side joint is equal to the outer diameter of the filter element 3 filter cartridge portion.

[0031] Figure 4 Schematic diagram of the installation structure of the filter element 3 of the filter concentrator according to the third embodiment of the present invention. Figure 5 for Figure 4 Axial view of the connector on the 3 side of the middle filter element. Figure 4-Figure 5As shown, the filter element 3 installation structure of the filter concentrator comprises a filter element 3 installation tube extending circumferentially along the inner wall of the cylinder of the filter concentrator, the filter element 3 installation tube is provided with a clear liquid output structure and a plurality of filter element 3 installation tube side joints arranged at intervals along the length direction of the filter element 3 installation tube, the plurality of filter element 3 installation tube side joints are respectively used to install the filter element 3 and introduce the clear liquid outputted by the corresponding filter element 3 into the filter element 3 installation tube and discharge it through the clear liquid output part, the end of the filter element 3 is provided with a filter element 3 side joint, the filter element 3 side joint is adaptively connected with the corresponding filter element 3 installation tube side joint; the filter element 3 side joint has an axial through hole 41 which can accommodate the corresponding filter element 3 installation tube side joint, the inner side end of the axial through hole 41 is connected with the inner cavity of the corresponding filter element 3 and the outer side end of the axial through hole 41 extends to On the end face of the side joint of the filter element 3, an internal threaded hole 411 is formed in the channel of the axial through hole 41 near its inner end, and a countersunk hole 412 is formed near its outer end; the filter element 3 installation pipe side joint has a nozzle that can be accommodated in the corresponding axial through hole 41, and the outlet position of the nozzle forms an external threaded rod filter element 3 installation pipe side joint 21 that is compatible with the corresponding internal threaded hole 411, and the root position forms a sealing ring 5 installation flange 22 that is compatible with the corresponding countersunk hole 412, and the sealing ring 5 installation flange 22 is sleeved with a sealing ring 5, and the sealing ring 5 is located between the corresponding countersunk hole 412 and the corresponding sealing ring 5 installation flange 22 when working, thereby isolating the external raw liquid of the filter element 3 from the internal threaded hole 411 and the external threaded rod filter element 3 installation pipe side joint 21 that are compatible with each other.

[0032] The nozzle has an axial positioning flange 23 for the sealing ring 5 at the bottom of the mounting flange 22 for the sealing ring 5. When the sealing ring 5 is working, it is axially pressed in the space defined by the corresponding countersunk hole 412, the mounting flange 22 for the sealing ring 5 and the axial positioning flange 23 for the sealing ring 5. The space is a cylindrical space; the sealing ring 5 is a cylindrical sealing ring 5.

[0033] By setting an axial positioning flange 23 of the sealing ring 5 at the bottom of the sealing ring 5 mounting flange 22 of the nozzle, and restricting the sealing ring 5 to a cylindrical space formed by the countersunk hole 412, the sealing ring 5 mounting flange 22 and the sealing ring 5 axial positioning flange 23, using a cylindrical sealing ring 5 matching the space, the sealing ring 5 can maintain stable radial deformation while being axially compressed during the tightening process, thereby avoiding twisting or local deformation of the sealing ring 5, thereby ensuring a uniform and reliable sealing effect between the sealing ring 5 and each contact surface, and more effectively preventing the external original liquid of the filter element 3 from penetrating into the threaded mating part.

[0034] In addition, in this embodiment, the outer peripheral wall of the filter element 3 side joint has a rotating structure. Specifically, the rotating structure is an external hexagonal head. A heat dissipation groove 6 is also provided on the outer peripheral wall of the filter element 3 side joint. In addition, the outer peripheral wall of the filter element 3 side joint is slightly smaller than or equal to the outer diameter of the filter element 3 filter cartridge portion.

[0035] The present invention also provides a filtering concentrator, comprising: a barrel; a stirring device, comprising a driving assembly, a rotating shaft assembly and a paddle assembly, wherein the driving assembly is mounted on the upper end surface of the barrel, the upper end of the rotating shaft assembly is connected to the driving assembly and the lower end extends into the barrel, and the paddle assembly is mounted on the rotating shaft assembly; a filtering device, comprising at least one group of filter elements 3, wherein the at least one group of filter elements 3 is mounted inside the barrel and located beside the rotating shaft assembly and / or the paddle assembly, wherein the at least one group of filter elements 3 is connected to a clear liquid output pipeline, and the clear liquid output pipeline extends to the outside of the barrel; the filtering device adopts the above-mentioned filter element 3 installation structure.

[0036] The above is a description of the relevant contents of the present invention. A person skilled in the art will be able to implement the present invention based on these descriptions. Based on the above contents of this specification, all other embodiments obtained by a person skilled in the art without making any creative work shall fall within the scope of patent protection.

Claims

1. A filter element installation structure of a filter concentrator, comprising a filter element installation tube extending circumferentially along the inner wall of a cylinder of the filter concentrator, the filter element installation tube being provided with a clear liquid output structure and a plurality of filter element installation tube side joints arranged at intervals along the length direction of the filter element installation tube, the plurality of filter element installation tube side joints being respectively used to install a filter element and to guide the clear liquid outputted by the corresponding filter element into the filter element installation tube and to discharge it through the clear liquid output portion, the end of the filter element being provided with a filter element side joint, the filter element side joint being adaptably connected to the corresponding filter element installation tube side joint; characterized in that: The filter element side joint has an axial through hole that can accommodate the corresponding filter element mounting pipe side joint, the inner end of the axial through hole is connected to the inner cavity of the corresponding filter element and the outer end of the axial through hole extends to the end surface of the filter element side joint, and an internal threaded hole is formed near its inner end in the channel of the axial through hole and a countersunk hole is formed near its outer end; the filter element mounting pipe side joint has a nozzle that can be accommodated in the corresponding axial through hole, an external threaded rod that is compatible with the corresponding internal threaded hole is formed at the outlet position of the nozzle, and a sealing ring mounting flange that is compatible with the corresponding countersunk hole is formed at the root position, and a sealing ring is sleeved on the sealing ring mounting flange, and the sealing ring is located between the corresponding countersunk hole and the corresponding sealing ring mounting flange when working, thereby isolating the original liquid outside the filter element from the internal threaded hole and the external threaded rod that are compatible with each other.

2. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: The inner end of the channel of the countersunk hole close to the axial through hole is a tapered channel, and the outer end of the channel of the countersunk hole close to the axial through hole is a cylindrical channel, and the cylindrical channel is connected with the large end of the corresponding tapered channel; the nozzle is provided with a sealing ring axial positioning flange at the bottom position of the sealing ring mounting flange, and the sealing ring is axially pressed in the space defined by the corresponding tapered channel, the corresponding cylindrical channel, the corresponding sealing ring mounting flange and the corresponding sealing ring axial positioning flange when working.

3. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: The nozzle is provided with an axial positioning flange of the filter element side joint at the bottom of the sealing ring mounting flange, and the axial positioning flange of the filter element side joint is used for contacting and positioning with the corresponding end face.

4. The filter element installation structure of the filter concentrator according to claim 3, characterized in that: Two sealing rings are axially spaced apart on the sealing ring mounting flange.

5. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: The nozzle is provided with a sealing ring axial positioning flange at the bottom of the sealing ring mounting flange. When the sealing ring is working, it is axially pressed in the space defined by the corresponding countersunk hole, the corresponding sealing ring mounting flange and the corresponding sealing ring axial positioning flange.

6. The filter element installation structure of the filter concentrator according to claim 5, characterized in that: The space is a cylindrical space; the sealing ring is a cylindrical sealing ring.

7. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: The outer peripheral wall of the filter element side joint has a rotating structure.

8. The filter element installation structure of the filter concentrator according to claim 7, characterized in that: The carrying and rotating structure is an external hexagonal head.

9. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: A heat dissipation groove is provided on the outer peripheral wall of the filter element side joint.

10. The filter element installation structure of the filter concentrator according to claim 1, characterized in that: The diameter of the outer peripheral wall of the filter element side joint is ≤ the outer diameter of the filter element cartridge portion.

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