CN215365008U - Membrane shell and membrane filtration device - Google Patents

Abstract

The utility model relates to a membrane shell and a membrane filtering device. The end part of the cylinder body is connected with the connecting end. The connecting end is provided with a first through hole communicated with the cylinder body, and a plurality of second through holes are arranged on the connecting end at intervals around the first central line of the cylinder body. The second through hole extends to the hole wall of the first through hole from the outer wall of the connecting end and is communicated with the first through hole. On one hand, the second through hole in any direction can be used as a concentrated water interface or a water inlet interface according to actual needs and is used for introducing concentrated water or raw water into the cylinder; on the other hand, when the two membrane shells are combined in parallel, the second through holes of the two membrane shells are connected in a butt joint mode through the connecting joints, and the second through holes which do not need to be used on the membrane shells are sealed through the plug heads, so that the two membrane filtering devices are convenient and quick to operate in a combined mode, the use types of the membrane shells are reduced, and the interchangeability and standardization of the membrane shells are enhanced.

Description

Membrane shell and membrane filtration device

Technical Field

The utility model relates to the technical field of water treatment, in particular to a membrane shell and a membrane filtering device.

Background

In the traditional water treatment industry, the membrane filtration device can be a reverse osmosis membrane device, a nanofiltration membrane device, a roll type ultrafiltration membrane device and the like, and the membrane shells applied by the membrane filtration device are mainly two, wherein one is a glass fiber reinforced plastic membrane shell, and the other is a stainless steel membrane shell. In any form of membrane shell, the water inlet port and the concentrate port on the membrane shell are usually in the form of connecting pipes or in the form of overhanging joints (copy forest joint or chuck joint). The connecting pipe is arranged on the membrane shell in a manner of opening a hole in the wall of the membrane shell and welding or fixedly mounting by using a mounting piece. However, the arrangement positions of the water inlet interface and the concentrated water interface of the currently applied membrane shell are determined according to the process design, the positions of the water inlet interface and the concentrated water interface on the membrane shell cannot be changed after being determined, when the water treatment equipment is assembled by combining a plurality of membrane filtering devices in series and/or in parallel, the water inlet interface and the concentrated water interface on the membrane shell are fixed and have different positions, and the membrane shells are various and incompatible, so that the plurality of membrane filtering devices are not convenient to combine and assemble together, and the combined membrane filtering devices have huge volumes.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to overcome the defects of the prior art and to provide a membrane housing and a membrane filtration device, which can be assembled quickly and reduce the volume size of the membrane filtration device.

The technical scheme is as follows: a membrane shell, comprising: the hollow barrel body is connected with the connecting end, the end portion of the barrel body is connected with the connecting end, the connecting end is provided with a first through hole communicated with the barrel body, a plurality of spaced second through holes are further formed in the connecting end around a first central line of the barrel body, and the second through holes extend from the outer wall of the connecting end to the hole wall of the first through hole and are communicated with the first through hole.

In the membrane shell, the connecting end is provided with the first through hole communicated with the cylinder body, so that the water production pipe of the membrane element arranged in the membrane shell can be led out through the first through hole; in addition, still be equipped with a plurality of second through-hole on the link at interval around the first central line of barrel, a plurality of position all are equipped with the second through-hole on the link promptly, so on the one hand, the second through-hole in arbitrary one position all can regard as dense water interface or interface of intaking according to actual need for introduce dense water or introduce raw water to the inside of barrel, on the other hand, when two membrane shells are made up side by side when being in the same place, with the second through-hole of two membrane shells adopt the attach fitting to carry out butt joint can, and with the second through-hole that need not use on the membrane shell seal up through installing the shutoff head can, make the combination operation of two membrane filter equipment comparatively convenient and fast, the membrane shell uses the kind to have been reduced, the interchangeability and the standardization of membrane shell have been strengthened.

In one embodiment, the connecting end is provided with a plurality of mounting surfaces which are sequentially connected end to end around the center of the cylinder body, and the second through holes are correspondingly arranged on the mounting surfaces one by one; the mounting surface is a plane.

In one embodiment, a first section of the connecting end on a first central line perpendicular to the cylinder body is a regular triangle, a regular quadrangle, a regular pentagon or a regular hexagon.

In one embodiment, the mounting surface has a first recess around a rim of the second through hole.

In one embodiment, the mounting surface is further provided with a second recess communicated with the first recess, and the second recess extends to the edge of the mounting surface.

In one embodiment, the second through hole is a tapered through hole, and the size of the opening of the tapered through hole is gradually reduced in the direction close to the first center line of the cylinder body; the membrane shell further comprises a sealing gasket arranged on the inner wall of the conical through hole, the sealing gasket is used for being in sealing contact with the hole wall of the conical through hole, a third through hole is formed in the sealing gasket, and the sealing gasket is used for being sleeved on the assembly part through the third through hole; the assembly parts are plugging heads, external connecting pipes, partition butt joints or communication butt joints.

In one embodiment, the sealing gasket is provided with a first end face and a second end face which are opposite to each other, and an outer wall surface connecting the first end face and the second end face; the third via extends from the first end face to the second end face; more than two first convex parts arranged at intervals are arranged on the outer wall surface; first convex part is around the circumference setting of third through-hole, first convex part be used for with the sealed conflict cooperation of pore wall of second through-hole, more than two first convex part is to the distance of the second central line of third through-hole is in first terminal surface is to increase gradually in the direction of second terminal surface.

In one embodiment, the outer wall surface comprises a first section of wall surface and a second section of wall surface which are arranged in sequence along the second central line direction of the third through hole; the first section wall surface is closer to the first end surface than the second section wall surface; a wire groove arranged around the circumference of the third through hole is formed in the first section of wall surface; the two or more first protrusions are provided on the second section wall surface.

In one embodiment, a second section of the first convex part is taken through a second center line of the third through hole, and a point on the second section, which is farthest from the second center line, is taken as a point p; the connecting lines of more than two p points on the same second section are obliquely arranged relative to the second central line, and the oblique angle is a; the inclined angle of the hole wall of the second through hole relative to the axis of the second through hole is b, and a is the same as b.

A membrane filtration device comprises the membrane shell and a membrane element arranged in the membrane shell.

In the membrane filtering device, the connecting end is provided with the first through hole communicated with the cylinder body, so that the water producing pipe of the membrane element arranged in the membrane shell can be led out through the first through hole; in addition, still be equipped with a plurality of second through-hole on the link at interval around the first central line of barrel, a plurality of position all are equipped with the second through-hole on the link promptly, so on the one hand, the second through-hole in arbitrary one position all can regard as dense water interface or interface of intaking according to actual need for introduce dense water or introduce raw water to the inside of barrel, on the other hand, when two membrane shells are made up side by side when being in the same place, with the second through-hole of two membrane shells adopt the attach fitting to carry out butt joint can, and with the second through-hole that need not use on the membrane shell seal up through installing the shutoff head can, make the combination operation of two membrane filter equipment comparatively convenient and fast, the membrane shell uses the kind to have been reduced, the interchangeability and the standardization of membrane shell have been strengthened.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.

FIG. 1 is a view of a membrane shell according to an embodiment of the present invention;

FIG. 2 is a schematic end view of a membrane shell according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at M;

FIG. 4 is a cross-sectional view at A-A of FIG. 2;

FIG. 5 is a cross-sectional view at B-B of FIG. 4;

FIG. 6 is an enlarged schematic view of FIG. 4 at N;

FIG. 7 is a schematic structural view illustrating a second through hole of a membrane shell with a plug according to an embodiment of the present invention;

FIG. 8 is a schematic structural view illustrating an external connection tube installed in the second through hole of the membrane housing according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a membrane shell having a partition joint disposed in a second through hole according to an embodiment of the present invention;

FIG. 10 is a schematic view of a gasket according to an embodiment of the present invention;

FIG. 11 is an enlarged view of FIG. 10 at T;

fig. 12 is a perspective view of a gasket according to an embodiment of the utility model.

10. A membrane shell; 11. a barrel; 12. a connecting end; 121. a first through hole; 122. a second through hole; 123. a mounting surface; 1231. a first recess; 1232. a second recess; 13. a gasket; 131. a third through hole; 1311. a second centerline; 132. a first end face; 133. a second end face; 134. an outer wall surface; 135. a first convex portion; 136. a first section of wall; 137. a second section of wall surface; 138. a wire slot; 20. an assembly member; 201. a limiting part; 21. plugging a plug; 22. an external connection pipe; 23. the butt joint is isolated.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, 2, 4 and 5, fig. 1 shows a view structure diagram of a membrane housing 10 according to an embodiment of the present invention, fig. 2 shows a schematic end structure diagram of the membrane housing 10 according to an embodiment of the present invention, fig. 4 shows a cross-sectional view at a-a of fig. 2, and fig. 5 shows a cross-sectional view at B-B of fig. 4. According to the membrane shell 10 provided by an embodiment of the present invention, the membrane shell 10 includes a hollow cylinder 11 and a connecting end 12. The end of the cylinder 11 is connected to the connection end 12. The connecting end 12 is provided with a first through hole 121 communicated with the cylinder 11, and the connecting end 12 is provided with a plurality of second through holes 122 at intervals around a first central line of the cylinder 11. The second through hole 122 extends from the outer wall of the connection end 12 to the hole wall of the first through hole 121 to communicate with the first through hole 121.

In the membrane shell 10, the connecting end 12 is provided with the first through hole 121 communicated with the cylinder 11, so that the water producing pipe of the membrane element arranged in the membrane shell 10 can be led out through the first through hole 121; in addition, the connecting end 12 is further provided with a plurality of second through holes 122 at intervals around the first center line of the cylinder 11, that is, the connecting end 12 is provided with the second through holes 122 in a plurality of directions, so on one hand, the second through holes 122 in any direction can be used as a concentrated water interface or a water inlet interface according to actual needs for introducing concentrated water or raw water into the cylinder 11, on the other hand, when the two membrane shells 10 are combined in parallel, the second through holes 122 of the two membrane shells 10 can be butt-jointed by using a connecting joint (corresponding to an assembly 20 described later), and the second through holes 122 which are not needed to be used on the membrane shells 10 are sealed by installing a sealing head 21, so that the combination operation of the two membrane filtering devices is convenient and quick, the use types of the membrane shells 10 are reduced, and the interchangeability and standardization of the membrane shells 10 are enhanced.

It should be noted that one end of the membrane shell 10 is connected to the connecting end 12, or both ends of the membrane shell may be connected to the connecting end 12, and the arrangement is performed according to actual requirements, which is not limited herein.

Referring to fig. 1 and 2, further, the connecting end 12 is provided with a plurality of mounting surfaces 123 connected end to end in sequence around the center of the cylinder 11, and the plurality of second through holes 122 are correspondingly arranged on the plurality of mounting surfaces 123. Specifically, the mounting surface 123 is a plane. Thus, when the two membrane housings 10 are combined together in parallel, the mounting surfaces 123 of the two membrane housings 10 can be attached to each other seamlessly, so that the combined structure of the membrane filtration device has better stability.

Specifically, a first cross section of the connecting end 12 on a first center line perpendicular to the cylinder 11 is a polygon, that is, the connecting end 12 is a polygonal cylindrical body. The polygon is specifically, for example, a regular polygon, so that when two membrane housings 10 are combined in parallel, the membrane housings 10 can be assembled together conveniently no matter which orientation the membrane housings 10 are located in, that is, the membrane filtration device can be assembled and connected conveniently to obtain the water treatment equipment, so that the universality of the membrane housings 10 is stronger. The regular polygon may be, for example, a regular triangle, a regular quadrangle, a regular pentagon, a regular hexagon, and the like, and is not limited herein. When the regular polygon is a regular quadrangle, it can be understood that the connecting end 12 is a square column, the number of the mounting surfaces 123 on the connecting end 12 is four, and the number of the second through holes 122 is four.

In addition, as an alternative, the first cross section of the connecting end 12 on the first central line perpendicular to the cylinder 11 may also be circular, oval, etc., and the specific shape is not limited herein and may be set according to actual requirements.

Referring to fig. 1 and 2, further, a first cross section of the connection end 12 perpendicular to a first center line of the cylinder 11 is a regular triangle, a regular quadrangle, a regular pentagon or a regular hexagon. Therefore, the shape and size of the mounting surfaces 123 on the connecting end 12 are the same, when two membrane shells 10 are combined in parallel, the second through holes 122 of the two membrane shells 10 are connected in a butt joint mode through connecting joints, and the second through holes 122 which are not needed to be used on the membrane shells 10 are sealed through installing the plugging heads 21, so that the combined operation of the two membrane filtering devices is convenient and fast, the use types of the membrane shells 10 are reduced, and the interchangeability and standardization of the membrane shells 10 are enhanced.

Referring to fig. 5 and 6, and any one of fig. 7 to 9, fig. 6 shows an enlarged schematic structural diagram of fig. 4 at N, fig. 7 shows a schematic structural diagram of a membrane housing 10 according to an embodiment of the present invention when a plugging head 21 is installed in a second through hole 122, fig. 8 shows a schematic structural diagram of a membrane housing 10 according to an embodiment of the present invention when an external connection pipe 22 is installed in the second through hole 122, and fig. 9 shows a schematic structural diagram of a membrane housing 10 according to an embodiment of the present invention when an opposing joint 23 is installed in the second through hole 122. In one embodiment, the mounting surface 123 has a first recess 1231 around a perimeter of the second through hole 122. In this way, when the assembly 20, such as the plugging head 21, the external connection pipe 22, the partition abutment 23, and the communication abutment, is installed in the second through hole 122, the first concave portion 1231 is adapted to the position limiting portion 201 of the assembly 20 for accommodating and positioning the position limiting portion 201, thereby limiting the assembly 20.

Referring to fig. 3 and 6, fig. 3 shows an enlarged schematic view of fig. 2 at M. In one embodiment, the mounting surface 123 is further provided with a second recess 1232 in communication with the first recess 1231, and the second recess 1232 extends to an edge of the mounting surface 123. Thus, the second concave portion 1232 functions as a view inspection port, and the second concave portion 1232 can observe and judge whether the first concave portion 1231 is internally provided with the partition butt joint 23 or the communication butt joint, so that the butt joint communication state when the two membrane shells 10 are combined together can be judged, the two membrane shells 10 do not need to be separated for judgment, and the maintenance and repair operation can be conveniently performed. The partition butt joint 23 and the communication butt joint may be distinguished by different colors, different marks, or other means, for example, which are not limited herein.

Referring to fig. 6 and 7, in one embodiment, the second through hole 122 is a tapered through hole. The opening size of the tapered through-hole becomes gradually smaller in a direction close to the first center line of the cylinder 11. The membrane housing 10 further comprises a sealing gasket 13 arranged on the inner wall of the conical through hole. The sealing gasket 13 is used for being in sealing contact with the wall of the conical through hole, the sealing gasket 13 is provided with a third through hole 131, and the sealing gasket 13 is used for being sleeved on the assembly part 20 through the third through hole 131. The assembly part 20 is a plugging head 21, an external connecting pipe 22, a partition butt joint 23 or a communication butt joint. Thus, the assembly member 20 can be quickly mounted on the second through hole 122 via the gasket 13, and the sealing performance is good.

Referring to fig. 7 to 9, in order to clearly show the structures of the components in fig. 7 to 9, fig. 7 to 9 only show the related structure of the connection end 12, in which one side of the connection end is located at the second through hole 122, and not all the structures of the connection end 12 are shown. Specifically, when the assembly 20 is the plugging head 21, after the assembly 20 is sleeved with the sealing gasket 13 and is installed on the second through hole 122, the assembly 20 can play a role of sealing the second through hole 122, so that the fluid inside the membrane shell 10 is prevented from flowing out through the second through hole 122; when the assembly part 20 is the external connection pipe 22, after the assembly part 20 is sleeved with the sealing gasket 13 and is arranged on the second through hole 122, the assembly part 20 can be used as a concentrated water interface or a water inlet interface, and meanwhile, the sealing property can be ensured; when the assembly part 20 is the partition butt joint 23, the two insertion ends of the partition butt joint 23 are respectively sleeved with the sealing gasket 13, one of the insertion ends and the sealing gasket 13 thereon are installed in the second through hole 122 of one of the membrane shells 10, and the other insertion end and the sealing gasket 13 thereon are installed in the second through hole 122 of the other membrane shell 10, so that when the two membrane shells 10 are combined in parallel, the partition butt joint 23 can play a role of synchronously plugging the second through holes 122 of the two membrane shells 10, the communication between the second through holes 122 of the two membrane shells 10 can be avoided, meanwhile, the sealing performance is good, and certainly, the partition butt joint 23 can also be replaced by two plugging heads 21; when the assembly member 20 is a communicating butt joint, the two insertion ends of the communicating butt joint are respectively sleeved with the sealing gasket 13, one of the insertion ends and the sealing gasket 13 thereon are installed in the second through hole 122 of one of the membrane shells 10, and the other insertion end and the sealing gasket 13 thereon are installed in the second through hole 122 of the other membrane shell 10, so that when the two membrane shells 10 are combined in parallel, the communicating butt joint can play a role of communicating the second through holes 122 of the two membrane shells 10, and meanwhile, the sealing performance is good.

It should be noted that the communicating joint is similar to the blocking joint 23 in structure, except that the communicating joint has more communicating holes than the blocking joint 23, and plugging the communicating holes of the communicating joint is equal to the blocking joint 23.

Generally, when the water inlet and the concentrated water inlet of the conventional membrane shell 10 are in the form of an overhanging joint, a plurality of membrane shells 10 need to be butted by using a connecting pipeline or a connecting joint when being spliced and combined, and the connecting pipeline or the connecting joint will have pressure loss. Referring to fig. 9, in the present embodiment, when two membrane housings 10 are combined together in parallel, the mounting surfaces 123 of the two membrane housings 10 are attached to each other, wherein one of the insertion ends of the blocking butt joint 23 is inserted into the second through hole 122 of one of the membrane housings 10, and the other blocking butt joint 23 is inserted into the second through hole 122 of the other membrane housing 10. Similarly, when two membrane housings 10 need to be communicated, the mounting surfaces 123 of the two membrane housings 10 are attached to each other, wherein the insertion end of one communication butt joint is inserted into the second through hole 122 of one membrane housing 10, and the insertion end of the other communication butt joint is inserted into the second through hole 122 of the other membrane housing 10. Therefore, the partition butt joint 23 and the communication butt joint in the embodiment are both embedded into the second through hole 122 of the connection end 12, and are not located outside the connection end 12, so that on one hand, the water treatment equipment formed by combining more than two membrane filtration devices is compact and has a small volume; on the other hand, the embedded arrangement mode is adopted, the length of the butt joint pipeline of the membrane shells 10 is shortened, so that pipes can be saved, and pressure loss and leakage caused by stress in the butt joint process of the two membrane shells 10 are reduced.

Referring to fig. 10 to 12, fig. 10 shows a schematic structural diagram of a gasket 13 according to an embodiment of the present invention, fig. 11 shows an enlarged schematic structural diagram of fig. 10 at T, and fig. 12 shows a structural view of the gasket 13 according to an embodiment of the present invention. Further, the gasket 13 is provided with a first end surface 132 and a second end surface 133 which are opposed to each other, and an outer wall surface 134 which connects the first end surface 132 and the second end surface 133. The third through-hole 131 extends from the first end surface 132 to the second end surface 133. The outer wall 134 is provided with two or more first protrusions 135 arranged at intervals. The first protrusions 135 are arranged around the circumference of the third through hole 131, the first protrusions 135 are in sealing interference fit with the hole wall of the second through hole 122, and the distance from two or more first protrusions 135 to the second center line 1311 of the third through hole 131 gradually increases in the direction from the first end surface 132 to the second end surface 133.

Note that the distance from the first protrusion 135 to the second center line 1311 of the third through hole 131 refers to the distance between the portion on the surface of the first protrusion 135 farthest from the second center line 1311 and the second center line 1311, that is, S as illustrated in fig. 10. When the first protrusion 135 is in sealing contact with the wall of the second through hole 122, the portion of the surface of the first protrusion 135 farthest from the second center line 1311 of the third through hole 131 is in sealing contact with the wall of the second through hole 122.

In this way, the gasket 13 is sleeved and mounted on the assembly member 20 through the third through hole 131, and then the assembly member 20 is mounted in the second through hole 122, so that the limiting portion 201 of the assembly member 20 abuts against the mounting surface 123, and the two or more first protrusions 135 on the outer wall surface 134 are in sealing abutting fit with the hole wall of the second through hole 122. Thus, on one hand, since the distance S from the two or more first protrusions 135 to the second center line 1311 of the third through hole 131 gradually increases in the direction from the first end surface 132 to the second end surface 133, that is, the outer wall surface 134 of the gasket 13 is overall in a shape similar to a cone, the cone plays a self-positioning role in the butt joint installation process of the gasket 13 and the second through hole 122, and the installation deviation between the assembly member 20 and the second through hole 122 can be compensated in the installation process, so that the assembly operation is convenient; on the other hand, the first terminal surface 132 is in sealing conflict cooperation with the first step face of second through-hole 122, forms plane seal as the primary seal section, and the sealed conflict cooperation of the pore wall of first convex part 135 all with second through-hole 122 more than two simultaneously forms more than two annular line sealings, and the annular line seal more than two constitutes the back seal section, can further strengthen the leakproofness of structure, can reduce the risk of revealing that the installation deviation brought simultaneously, can guarantee sealing performance.

Further, the outer wall surface 134 includes a first-stage wall surface 136 and a second-stage wall surface 137 which are sequentially arranged along the second center line 1311 direction of the third through hole 131. The first section wall 136 is closer to the first end surface 132 than the second section wall 137. The first section wall 136 is provided with a wire groove 138 arranged around the circumference of the third through hole 131. Two or more first protrusions 135 are provided on the second-stage wall surface 137. Thus, the slot 138 can isolate the fluid flowing through the first section wall 136, thereby improving the sealing performance. It should be noted that the first protrusions 135 on the second section wall 137 are disposed at intervals, and when the first protrusions 135 are tightly abutted against the wall of the second through hole 122, the first protrusions 135 deformed correspondingly can be pressed to the interval between two adjacent first protrusions 135.

In the process of manufacturing the gasket 13, the first protrusion 135 and the wire groove 138 are integrally formed with the gasket 13 by injection molding, but it is also possible to form a semi-finished product by injection molding, then form the first protrusion 135, the wire groove 138, and the third through hole 131 on the semi-finished product by milling, or form the first protrusion, the wire groove 138, and the third through hole 131 by other methods, which is not limited herein.

Referring to fig. 10 to 12, in one embodiment, a second section of the first protrusion 135 is taken through a second center line 1311 of the third through hole 131, and a point on the second section farthest from the second center line 1311 is referred to as a point p. The connecting lines of more than two points p on the same second cross section are obliquely arranged relative to the second central line 1311, and the oblique angle is a. The hole wall of the second through hole 122 has an inclination angle b with respect to the axis of the second through hole 122, and a is the same as b. Thus, when the assembly member 20 is installed in the second through hole 122, the two or more first protrusions 135 on the outer wall surface 134 can be simultaneously in sealing interference fit with the hole wall of the second through hole 122, and the sealing effect is good. In the present embodiment, a and b are both smaller than 90 °, specifically, for example, 45 ° to 85 °.

As an optional scheme, a and b may also be different, and since the first protrusion 135 is an elastic protrusion, the first protrusion 135 deforms when in tight contact with the hole wall of the second through hole 122, and it is also possible to realize that more than two first protrusions 135 are in synchronous contact with the hole wall of the second through hole 122.

Referring to fig. 10 to 12, in one embodiment, a second cross section of the first protrusion 135 is taken through a second center line 1311 of the third through hole 131, and the second cross section is a semicircular surface, a triangular surface, a semi-elliptical surface, a rectangular surface, or a trapezoidal surface. The second cross section of the first protrusion 135 is not limited to a semicircular surface, a triangular surface, a semi-elliptical surface, a rectangular surface, or a trapezoidal surface, and may have other shapes, which is not limited herein.

Referring to fig. 10-12, in one embodiment, gasket 13 includes an inner portion and an outer portion disposed circumferentially around the inner portion. The inner part is a hard part and the outer part is an elastic part. Note that the inner portion is, for example, a region indicated by a Q-turn in fig. 11, and the outer portion is a region other than the region indicated by the Q-turn on the gasket 13. Thus, the hardness of the inner portion is greater than that of the outer portion, the inner portion can be conveniently and stably sleeved on the assembly member 20, and the outer portion can deform, so that the sealing effect between the first protrusion 135 and the hole wall of the second through hole 122 can be ensured.

Referring to fig. 10 to 12, in one embodiment, the inner portion includes a connection portion connected to the outer portion and a hard member disposed on the connection portion. Specifically, the material of the connecting portion and the material of the outer portion may be the same or different, and are, for example, elastic soft materials.

In another embodiment, the inner portion is made of hard material, and the outer portion is made of elastic material thermally fused to the periphery of the inner portion. In addition, the hard member is, for example, a metal member, a ceramic member, a hard plastic member, a hard rubber member, or the like, and the hard member may be embedded in the connecting portion, may be completely embedded in the connecting portion, may be attached to the surface of the connecting portion, or the like.

As some optional embodiments, after the sealing gasket 13 is sleeved and mounted on the assembly member 20, in order to ensure the sealing performance between the sealing gasket 13 and the assembly member 20, the following methods may be used to implement the following steps: for example, the diameter of the third through hole 131 may be slightly smaller than the outer diameter of the fitting 20, that is, the fitting 20 is in interference fit with the third through hole 131; for another example, after the sealing gasket 13 is sleeved and mounted on the assembly member 20, the sealing performance between the sealing gasket 13 and the assembly member 20 is ensured by the sealant; for another example, a seal ring is provided between the inner wall of the third through hole 131 of the gasket 13 and the outer wall of the fitting 20.

In this embodiment, the second center line 1311 of the third through hole 131 is perpendicular to the first end surface 132, but may be in other included angle relationship with the first end surface 132, for example, 85 ° to 95 °, which is not limited herein.

Note that, in the infringement comparison, the "first protrusion 135" may be "a part of the gasket 13", that is, the "first protrusion 135" may be integrally formed with "the other part of the gasket 13"; the "first protrusion 135" may be formed separately from the "other portion of the gasket 13" and may be integrated with the "other portion of the gasket 13" as a single body. As shown in fig. 11 or 12, in one embodiment, the "first protrusion 135" is a part of the "gasket 13" that is integrally formed.

It should be noted that, in infringement comparison, the "connecting end 12" may be a "part of the cylinder 11", that is, the "connecting end 12" and "the other part of the cylinder 11" are integrally formed; or a separate member which can be separated from the rest of the barrel 11, i.e., the connecting end 12 can be manufactured separately and then combined with the rest of the barrel 11 into a whole.

Referring to fig. 1 again, in one embodiment, a membrane filtration device includes the membrane housing 10 according to any one of the above embodiments, and further includes a membrane element disposed inside the membrane housing 10. Specifically, the water production tube of the membrane element is led out through the first through hole 121.

In the membrane filtration device, the connecting end 12 is provided with the first through hole 121 communicated with the cylinder 11, so that the water producing pipe of the membrane element arranged in the membrane shell 10 can be led out through the first through hole 121; in addition, the connecting end 12 is further provided with a plurality of second through holes 122 at intervals around the first center line of the cylinder 11, that is, the connecting end 12 is provided with the second through holes 122 in a plurality of directions, so on one hand, the second through holes 122 in any direction can be used as a concentrated water interface or a water inlet interface according to actual needs for introducing concentrated water or raw water into the cylinder 11, on the other hand, when the two membrane shells 10 are combined in parallel, the second through holes 122 of the two membrane shells 10 can be connected in a butt joint mode through connecting joints, and the second through holes 122 which are not needed to be used on the membrane shells 10 are sealed through installing the plugging heads 21, so that the combined operation of the two membrane filtering devices is convenient and rapid, the use types of the membrane shells 10 are reduced, and the interchangeability and standardization of the membrane shells 10 are enhanced.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A membrane shell, comprising:

the hollow barrel body is connected with the connecting end, the end portion of the barrel body is connected with the connecting end, the connecting end is provided with a first through hole communicated with the barrel body, a plurality of spaced second through holes are further formed in the connecting end around a first central line of the barrel body, and the second through holes extend from the outer wall of the connecting end to the hole wall of the first through hole and are communicated with the first through hole.

2. The membrane shell according to claim 1, wherein the connecting end is provided with a plurality of mounting surfaces which are sequentially connected end to end around the center of the cylinder body, and a plurality of second through holes are correspondingly arranged on the mounting surfaces one by one; the mounting surface is a plane.

3. The membrane shell according to claim 2, wherein a first cross section of the connection end perpendicular to the first centerline of the cylinder is a regular triangle, a regular quadrangle, a regular pentagon or a regular hexagon.

4. The membrane housing of claim 2, wherein the mounting surface has a first recess around a rim of the second through hole.

5. The membrane housing of claim 4, wherein the mounting surface is further provided with a second recess in communication with the first recess, and the second recess extends to an edge of the mounting surface.

6. The membrane shell according to claim 1, wherein the second through hole is a tapered through hole, and the opening size of the tapered through hole is gradually reduced in a direction close to the first center line of the cylinder; the membrane shell further comprises a sealing gasket arranged on the inner wall of the conical through hole, the sealing gasket is used for being in sealing contact with the hole wall of the conical through hole, a third through hole is formed in the sealing gasket, and the sealing gasket is used for being sleeved on the assembly part through the third through hole; the assembly parts are plugging heads, external connecting pipes, partition butt joints or communication butt joints.

7. The membrane shell according to claim 6, wherein the sealing gasket is provided with a first end face and a second end face which are opposite to each other, and an outer wall face connecting the first end face and the second end face; the third via extends from the first end face to the second end face; more than two first convex parts arranged at intervals are arranged on the outer wall surface; first convex part is around the circumference setting of third through-hole, first convex part be used for with the sealed conflict cooperation of pore wall of second through-hole, more than two first convex part is to the distance of the second central line of third through-hole is in first terminal surface is to increase gradually in the direction of second terminal surface.

8. The membrane housing according to claim 7, wherein the outer wall surface comprises a first section of wall surface and a second section of wall surface arranged in sequence along a second centerline direction of the third through hole; the first section wall surface is closer to the first end surface than the second section wall surface; a wire groove arranged around the circumference of the third through hole is formed in the first section of wall surface; the two or more first protrusions are provided on the second section wall surface.

9. The membrane housing according to claim 7, wherein a second cross section of the first convex portion is taken through a second center line of the third through hole, and a point on the second cross section farthest from the second center line is taken as a p point; the connecting lines of more than two p points on the same second section are obliquely arranged relative to the second central line, and the oblique angle is a; the inclined angle of the hole wall of the second through hole relative to the axis of the second through hole is b, and a is the same as b.

10. A membrane filtration device, characterized in that it comprises a membrane housing according to any one of claims 1 to 9, and further comprises a membrane element arranged inside the membrane housing.

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