CN110975615A

CN110975615A - Center tube structure

Info

Publication number: CN110975615A
Application number: CN201911127588.6A
Authority: CN
Inventors: 李大川; 吕莉; 于爽; 卢莽; 严建勇
Original assignee: Xiamen Filtertech Industrial Corp
Current assignee: Xiamen Filtertech Industrial Corp
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-04-10

Abstract

The invention discloses a central tube structure, wherein a flow channel is formed in the middle of a central tube, and the central tube comprises a filter material body and an end cover; the filter material body is composed of a filter material and ribs for supporting, and the ribs are embedded on the filter material body to form a cylindrical structure. The central tube is directly made of the filtering material, and replaces the original full-plastic central tube without the filtering function, so that the filtering material can play a role of rolling the membrane central tube while playing the filtering function.

Description

Center tube structure

Technical Field

The invention relates to a central tube structure.

Background

Most of the existing reverse osmosis water purifiers are composed of multi-stage filtration and comprise a preposed filter element, an RO filter element and a postposition filter element. The water purifier has more complex structure and large volume due to excessive filter element elements. The composite filter element structure gradually becomes a development trend, not only optimizes the whole structure, but also saves the production cost.

Disclosure of Invention

In order to solve the above technical problem, an object of the present invention is to provide a center tube structure.

The invention is realized by the following technical scheme: a flow channel is formed in the middle of a central tube, and the central tube comprises a filter material body and an end cover; the filter material body is composed of a filter material and ribs for supporting, and the ribs are embedded on the filter material body to form a cylindrical structure.

Preferably, the outer wall of the filter material body is provided with a position-giving part which is arranged along the longitudinal direction, and the ribs are embedded in the position-giving part to form a cylindrical structure with the ribs on the surface.

Preferably, the number of the ribs is 1-20.

Preferably, the device further comprises annular ribs, and the annular ribs are mutually connected with the ribs.

Preferably, the outer wall of the filter material body is provided with a groove portion arranged along the circumferential direction, and the annular ribs are matched with the groove portion to form a cylindrical structure.

Preferably, the number of the annular ribs is at most 20.

Preferably, the central tube is one of a single-layer central filter tube and a multi-layer central filter tube.

Preferably, the end cap comprises an upper end cap and a lower end cap, the upper end cap and the lower end cap are respectively connected to the upper end and the lower end of the central tube, the upper end cap is provided with an opening, and the lower end cap is used for plugging one end of the filter material body; and a sealing area is formed in an area where the upper end cover or the lower end cover is overlapped with the filter material body or the ribs.

Preferably, the filter material body is provided with a main body part and central pipe end parts positioned at the upper end and the lower end of the main body part, and the central pipe end parts are arranged in a retracted manner relative to the main body part; the rib is provided with a rib main body and rib end parts positioned at the upper end and the lower end of the rib main body, the rib main body and the rib end parts are respectively arranged corresponding to the main body part and the central pipe end part, and the rib end parts are arranged in a retracted mode relative to the rib main body; the upper end cover or the lower end cover is matched with the end part of the central pipe to form a barrel structure.

The invention also provides a central tube structure, the middle part of the central tube is provided with a flow channel, the central tube comprises a filter material body and end covers, the filter material body has a filtering function, and the end covers are respectively embedded at two ends of the filter material body.

Preferably, the filter material body can be composed of one or more of a carbon rod, PP melt-blown and a compaction pipe.

The central tube for the filter element has the following beneficial effects:

1. the central tube is directly made of the filtering material, and replaces the original full-plastic central tube without the filtering function, so that the filtering material can play a role of rolling the membrane central tube while playing the filtering function.

2. The surface of the filter material body is embedded with the ribs, so that the filter material structure is reinforced, the strength of the filter material is enhanced, the requirement of rolling membrane elements can be met, and the filter material body can also be used for connecting membrane rolling parts such as membranes, cloth guides and the like.

3. The invention further can utilize the combination design of the ribs and the annular ribs, can share the stress when the length of the ribs is overlong, is favorable for dispersing the tensile force to the whole central tube in the subsequent film rolling process, and avoids the fracture or damage of the central tube caused by overlarge local stress.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the core tube of the present invention.

Figure 2 is a schematic of the construction of a center tube with multi-layer filtration according to the present invention.

FIG. 3 is a schematic diagram of the front side and the top view of the filter body of the present invention.

FIG. 4 is a schematic side view and a schematic top view of a filter body according to the present invention.

Fig. 5 is an enlarged schematic view at a-a' in fig. 3 or 4.

FIG. 6 is a schematic diagram of the front side and the top view of the ribless filter body of the present invention.

FIG. 7 is a perspective view and a schematic top view of the ribless filter body of the present invention.

Fig. 8 is a front view of a tendon according to the present invention and a schematic top view thereof.

Fig. 9 is a side view of a tendon according to the present invention and a schematic top view thereof.

Fig. 10 is a perspective view of a tendon according to the present invention and a schematic top view thereof.

FIG. 11 is a schematic view of an unwinding structure of a film winding structure according to an embodiment of the present invention.

Fig. 12 is a schematic view of a water path of a rolling film structure according to an embodiment of the present invention.

FIG. 13 is a schematic view of an unwinding structure of a film winding structure according to another embodiment of the present invention.

FIG. 14 is a schematic view of a water path of a rolled film structure according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Referring to fig. 1 to 10 of the specification, a center tube structure, in which a center tube 1 is made of a filter material, for example, any one of carbon rods, PP cotton, PP powder compacted tubes, PE compacted tubes, mixed material compacted tubes, ACF rolled cloth, PP rolled cloth, graphene compacted tubes, wound fibers, or non-woven fabrics, which has a filtering function, may be directly made of one filter material to form a single-layer filter center tube (as shown in fig. 1), or may be made of a plurality of filter materials to form a multi-layer filter center tube (as shown in fig. 2). The central tube is directly made of the filtering material, so that the central tube has a filtering function, the original central tube without the filtering function can be replaced, the central tube has the filtering function, holes do not need to be punched on the surface of the central tube, and water flow can directly penetrate through the central tube directly made of the filtering material. The central tube is directly made of the filtering material, and replaces the original full-plastic central tube without the filtering function, so that the filtering material can play a role of rolling the membrane central tube while playing the filtering function.

Referring to the attached drawings, in a central tube structure, a flow channel 10 is formed in the middle of a central tube 1, wherein the central tube 1 includes a filter material body 11 and an end cap 3, the filter material body 11 can be further embedded in the end cap 3 through bonding and sealing, the filter material body 11 is made of a filter material and ribs 12 for supporting, the flow channel 10 is formed in the middle of the filter material body 11, and the filter material body can be used for raw water inflow or purified water outflow; the ribs 12 are embedded on the filter material body 11, so that a cylindrical structure with the ribs on the surface is formed, on one hand, the ribs can provide connection points for subsequent film rolling, cloth guiding or net isolating can be connected when the film is convenient to roll, meanwhile, a reinforcing effect can be achieved for the filter material body, and the central pipe is not prone to breaking. The ribs 12 can be embedded with the filtering material body 11 by integral molding, for example, in the preparation process, the ribs can be placed in a mold in advance, the filtering material is poured, the filtering material is compacted and sintered to be molded, and then the end cap is sealed to form the central tube. In another mode, the filter material body with a specific shape can be embedded with the ribs, and then the end caps are sealed to form the central tube which can filter water and is made of the filter material. The surface of the filter material body is embedded with the ribs, so that the filter material structure is reinforced, the strength of the filter material is enhanced, the requirement of rolling membrane elements can be met, and the filter material body can also be used for connecting membrane rolling parts such as membranes, cloth guides and the like.

The end cap 3 comprises an upper end cap 31 and a lower end cap 32, the upper end cap 31 and the lower end cap 32 are respectively arranged at the upper end and the lower end of the central tube, wherein the upper end cap 31 is provided with an opening, and the lower end cap 32 is used for plugging one end of the filter material body 11 to form a central tube structure with ribs on the surface and one end plugged; the upper end cover and the lower end cover are provided with outer diameters matched with the tubular body of the filter material body, and the overlapped area of the upper end cover and the lower end cover and the filter material body or the ribs is used as a glue sealing area of the central tube, so that the same sealing effect as that of the central tube (without a filtering function) in the prior art is achieved. The outer wall of the filtering material body 11 of the central tube is provided with a yielding part a which is arranged along the longitudinal direction, and the ribs 12 are embedded in the yielding part a to form a tubular structure. In another preferred embodiment, the ribs 12 have a length that is less than the overall height of the filter body. The number of the ribs shown in the drawings in this embodiment is two, and the two ribs are symmetrically distributed on two opposite sides of the filter material body 11, but in other embodiments, the number of the ribs may range from 1 to 20, that is, the number of the ribs is at most 20.

In another embodiment, the filtering material body 11 of the central tube does not need to be provided with ribs, and the required strength of the central tube can be achieved only by matching the strength of the filtering material body 11 with the end cover 3, wherein the filtering material body can be composed of one or more of carbon rods, PP melt-blown pipes and compacted pipes.

Preferably, the filtering material body 11 has a main body 11a and end portions 11b located at the upper and lower ends of the main body 11a, and the end portions 11b are set in a retracted manner relative to the main body 11 a; the rib 12 is provided with a rib main body 12a and rib end parts 12b which are positioned at the upper end and the lower end of the rib main body 12a, the rib main body 12a and the rib end parts 12b are respectively arranged corresponding to the positions of the main body part 11a and the end part 11b, the rib end parts are also arranged in a retracted mode relative to the rib main body to form a ladder, then the filter material body is matched with the rib to enable the end cover to be embedded in the rib end part or the central pipe end part to form a cylinder, and the rib end part or the end part forms the sealing area. The end cover with the outer annular surface area and a certain length is embedded with the central pipe into a whole to form sealing, and meanwhile, a sealing glue area can be provided for the membrane.

Further, the central tube 1 may further include annular ribs 13, the annular ribs 13 are connected with the ribs 12, a groove c formed along the circumferential direction is formed on the outer wall of the filter material body 11, and the annular ribs 13 are matched with the groove c in shape to form a cylindrical central tube structure; the annular ribs 13 can be distributed at any position of the filter material body 11, and the annular ribs are mainly used for sharing the stress of the filter material body and the ribs and enhancing the strength of the central tube. Preferably, the number of annular ribs for the tie ribs is at most 20, although it is of course also possible to dispense with the annular ribs. According to the invention, by utilizing the design of the annular ribs, the stress can be shared by the ribs when the length of the ribs is too long, so that the tensile force can be dispersed to the whole central tube in the subsequent film rolling process, and the central tube is prevented from being broken or damaged due to too large local stress.

The use of the central tube will be illustrated below.

In a specific application example, the central tube 1 can be used as a pre-filter. Referring to fig. 11 and 12, when the central tube 1 is used as a front filter, water flows into the flow channel 10 of the central tube from the opening of the upper end cap 31 and is filtered out through the filter body 11. The film rolling structure comprises the central tube 1 and the film roll 4, the front surface 4a of the film roll 4 is wound on the central tube 1, at this time, after the winding, the grid 43 is arranged between the front surfaces (desalination layers) of the membrane sheets 42, the membrane sheets 42 are arranged on the outer sides of the grid 43, pure water flow channels are formed between the back surfaces of the membrane sheets 42, and the guide cloth 41 is arranged in the pure water flow channels, namely, the guide cloth 41 is arranged on the other side of the membrane sheets 42; as described above, when the raw water flows from the flow channel 10 and is filtered by the filter main body 11, the water flows along the mesh 43 (arrow direction in the figure) to the membrane 41 for filtration, the filtered pure water flows outward along the guide cloth in the pure water flow channel, and the unfiltered water flows out along the mesh 43 and becomes wastewater.

In another preferred embodiment, when the central tube 1 is used in a roll-film structure, the central tube 1 can be used as a post-filter. Referring to fig. 13 and 14, when the central tube is used as a post-filter, the water flows from the outside to the central tube 1, and the finally produced purified water can flow out from the opening of the upper end cover 31 for the user. The roll membrane structure comprises the central tube 1 and a membrane roll 4, wherein the reverse side 4b of the membrane roll 4 is wound on the central tube 1, at the moment, after winding, the guide cloth 41 is arranged at the inner layer, the membrane 42 is arranged at the outer side of the guide cloth 41, the grid 43 is arranged at the outer side of the membrane 42, at the moment, water flow entering from the outside flows out along the grid 43 (in the direction of an arrow in the figure) and is filtered by the membrane 42, water penetrating through the membrane flows towards the central tube 1 along the guide cloth 41 and is further purified after being filtered by the central tube 1 serving as a post-positioned filter element, finally, the produced pure water flows out from the flow channel 10 of the central tube for people to use, and unpurified concentrated water flows out along the grid 43. The central tube is directly made of filtering materials, replaces the existing all-plastic central tube, has the filtering function which is not possessed by the existing central tube, can be used as a front-mounted or rear-mounted filter element, is matched with a membrane roll in a membrane rolling structure to form a two-in-one composite filter element structure, and is high in integration, so that when the central tube is installed on a water purifier, the structure of the water purifier is simpler, the space can be saved, and the filter element cost and the overall production cost of the water purifier can be further saved.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A central tube structure is characterized in that a flow channel is formed in the middle of a central tube, and the central tube comprises a filter material body and an end cover; the filter material body is composed of a filter material and ribs for supporting, and the ribs are embedded on the filter material body to form a cylindrical structure.

2. The central tube structure as claimed in claim 1, wherein the outer wall of the filter body is provided with a recess formed along a longitudinal direction, and the ribs are embedded in the recess to form a cylindrical structure with ribs on the surface.

3. A base pipe structure as claimed in any one of claims 1 or 2, wherein the number of said ribs is 1 to 20.

4. The base pipe structure as claimed in claim 1, further comprising annular ribs interconnecting said ribs.

5. The central tube structure as claimed in claim 4, wherein the outer wall of the filter body has a groove portion formed along the circumferential direction, and the annular ribs are matched with the groove portion to form a cylindrical structure.

6. A base pipe structure as claimed in claim 4, wherein said annular ribs are present in a number of up to 20.

7. The center tube structure of claim 1, wherein the center tube is one of a single layer filter center tube or a multi-layer filter center tube.

8. The central tube structure as claimed in claim 1, wherein the end cap comprises an upper end cap and a lower end cap, the upper end cap and the lower end cap are respectively connected to the upper end and the lower end of the central tube, wherein the upper end cap is provided with an opening, and the lower end cap is used for plugging one end of the filter material body; and a sealing area is formed in an area where the upper end cover or the lower end cover is overlapped with the filter material body or the ribs.

9. The utility model provides a central tube structure, its characterized in that, a runner has been seted up at the middle part of central tube, the central tube includes filter media body and end cover, the filter media body has filtering capability, the end cover gomphosis respectively is in the both ends of filter media body.

10. The central tube structure of claim 9, wherein the filter body is comprised of one or more of carbon rods, PP meltblown, and packing tubes.