Acid-resistant nanofiltration membrane element

Abstract

The utility model relates to the field of nanofiltration membranes, and discloses an acid-resistant nanofiltration membrane element which comprises a shell, end covers are arranged on the upper portion and the lower portion of the shell, sealing rings are arranged between the end covers and the shell, a nanofiltration membrane core is arranged in the middle of the shell, a central pipe is arranged in the middle of the nanofiltration membrane core, and the upper portion and the lower portion of the central pipe penetrate through the two end covers. The center pipe is fixedly connected with the end cover located on the lower portion and movably connected with the end cover located on the upper portion, the upper portion of the inner wall of the shell is fixedly connected with a fixing ring, the upper portion of the fixing ring is movably connected with an auxiliary plate, and a plurality of openings are formed in the middle of each end cover. According to the nanofiltration membrane element disclosed by the utility model, the shell is matched with the end cover, the auxiliary plate and the adjusting sleeve, so that the adjustment of the water yield of the nanofiltration membrane element is more convenient to operate, more convenient and more practical.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanofiltration membrane field especially, it relates to an acid -resistant nanofiltration membrane element. BACKGROUND

[0002] Nanofiltration membrane is a kind of membrane separation technology, usually used in water treatment, sewage treatment and food and beverage industry, its aperture range is usually between 1 to 10 nanometers, with selective permeability, can effectively remove specific solute, such as macromolecule, organic matter and certain ion, but the permeability to water and small molecule is better.

[0003] Through the retrieval, China patent publication No. CN215901287U discloses a novel composite nanofiltration membrane element structure, nut is fixed on the screen plate;The threaded end of the center tube extends into the inside of the outer cylinder and is threadedly connected with the nut;The filter membrane unit is wrapped and fixed on the outside of the center tube;The upper cover water inlet hole is composed of three upper cover water inlet hole groups;A plurality of inner cover water inlet hole groups are arranged on the inner cover ring;The inner cover water inlet hole groups are evenly distributed on the inner cover ring;The straight line formed by the first inner cover water inlet hole, the second inner cover water inlet hole and the third inner cover water inlet hole is arranged in the radial direction of the inner cover ring.

[0004] The above-mentioned device can adjust the water output, but when adjusting the water output, the positioning elastic plate needs to be clamped into the gap between the two different positioning convex strips, and when adjusting the position of the elastic plate, the sliding ring needs to be pushed to make the chamfer surface on the upper part push the round corner surface on the clamping strip, so that each clamping plate is opened outward, and all clamping strips are pulled out from the groove, but the sliding ring is relatively thin, and the surface is not provided with an anti-skid structure, which makes it inconvenient to push the sliding ring, and the water output adjustment is not convenient and practical. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an acid -resistant nanofiltration membrane element, which aims at improving the prior art, when adjusting the water output, the positioning elastic plate needs to be clamped into the gap between the two different positioning convex strips, but when adjusting the position of the elastic plate, the sliding ring needs to be pushed to make the chamfer surface on the upper part push the round corner surface on the clamping strip, so that each clamping plate is opened outward, and all clamping strips are pulled out from the groove, but the sliding ring is relatively thin, and the surface is not provided with an anti-skid structure, which makes it inconvenient to push the sliding ring, and the water output adjustment is not convenient and practical.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: an acid-resistant nanofiltration membrane element, including the shell, the upper and lower part of shell is provided with end cover, the end cover is provided with sealing ring together with shell, the middle part of shell is provided with nanofiltration membrane core, the middle part of nanofiltration membrane core is provided with center tube, the upper and lower part of center tube penetrates two end covers, the center tube is fixedly connected with the end cover located in lower part, the center tube is movably connected with the end cover located in upper part, the inner wall upper portion of shell is fixedly connected with fixed ring, the upper portion of fixed ring is movably connected with auxiliary plate, the middle part of end cover is provided with opening and the number is multiple, the middle part of end cover located in upper portion is rotatably connected with adjusting sleeve, the adjusting sleeve is connected with center tube threadedly, the inner wall lower portion of end cover located in upper portion is fixedly connected with limit ring, the outer wall upper portion of shell is fixedly connected with fixed ring, the middle part of auxiliary plate is provided with auxiliary mouth and the number is multiple.

[0007] As further description of the above technical scheme:

[0008] The outer wall upper portion of shell is provided with scale line and the number is multiple, and the top of shell is provided with inclined plane.

[0009] As further description of the above technical scheme:

[0010] The outer wall front portion of end cover located in upper portion is fixedly connected with arrow, and the inner wall top of end cover located in upper portion is fixedly connected with primary sealing pad.

[0011] As further description of the above technical scheme:

[0012] The bottom of primary sealing pad is fixedly connected with convex ring.

[0013] As further description of the above technical scheme:

[0014] The bottom of auxiliary plate is fixedly connected with positioning rod, the middle part of auxiliary plate is provided with ring groove, and the inside of ring groove is fixedly connected with secondary sealing pad.

[0015] As further description of the above technical scheme:

[0016] The top of secondary sealing pad is provided with recess, and the convex ring is movably connected with recess.

[0017] As further description of the above technical scheme:

[0018] The top of fixed ring is provided with positioning groove and the number is multiple, and the positioning rod is movably connected with positioning groove.

[0019] As further description of the above technical scheme:

[0020] The center pipe is provided with a plurality of through holes in the middle part.

[0021] The utility model has the advantages of the following:

[0022] 1、 the utility model discloses, through the mutual cooperation between the shell and end cover, auxiliary board and adjusting sleeve, the water yield of this nanofiltration membrane element is more convenient operation, more convenient, more practical to adjust.

[0023] 2、 the utility model discloses, through the mutual cooperation between the shell and end cover and sealing washer and primary sealing washer, secondary sealing washer, can effectively improve the sealing property between the components of this nanofiltration membrane element, more practical. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A kind of overall three-dimensional structure schematic diagram of acid-resistant nanofiltration membrane element is proposed for the utility model;

[0025] Figure 2 A kind of partial sectional three-dimensional structure schematic diagram of acid-resistant nanofiltration membrane element is proposed for the utility model;

[0026] Figure 3 A kind of enlarged three-dimensional structure schematic diagram of acid-resistant nanofiltration membrane element is proposed for the utility model at A place;

[0027] Figure 4 A kind of upper split three-dimensional structure schematic diagram of acid-resistant nanofiltration membrane element is proposed for the utility model.

[0028] LEGEND:

[0029] 1, shell;2, end cover;3, center tube;4, auxiliary plate;5, fixed ring;6, nanofiltration membrane core;7, sealing washer;21, arrow;22, limit ring;23, opening;24, adjusting sleeve;25, primary sealing washer;11, scale;12, fixed ring;13, inclined plane;251, convex ring;41, positioning rod;42, annular groove;43, secondary sealing washer;44, auxiliary port;431, recess;51, positioning groove;31, through hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model.

[0031] WITH REFERENCE Figure 1 - Figure 2The utility model provides an embodiment: a kind of acid-resistant nanofiltration membrane element, including shell 1, it is used to cooperate and connect each component, the upper and lower parts of shell 1 are provided with end cap 2, it is used to cooperate with shell 1, end cap 2 and shell 1 are commonly provided with sealing ring 7, it is annular, it can be deformed when being extruded by shell 1 and upper end cap 2, the gap between end cap 2 and shell 1 is blocked, the middle part of shell 1 is provided with nanofiltration membrane core 6, it is acid-resistant nanofiltration membrane, it is used to filter water body, the middle part of nanofiltration membrane core 6 is provided with center tube 3, it is used to send out filtered liquid, the upper part of center tube 3 is provided with screw thread, for the adjustment of cooperating adjusting sleeve 24, center tube 3 middle part is provided with through hole 31 and the number is multiple, it is used to cooperate water body filtration, the upper and lower parts of center tube 3 pass through two end caps 2, center tube 3 and the end cap 2 in upper part are movably connected, center tube 3 and the end cap 2 in lower part are fixedly connected, and with movably connected, the inner wall upper part of shell 1 is fixedly connected with fixed ring 5, it is used to cooperate the connection of auxiliary plate 4, the upper part of fixed ring 5 movably connects with auxiliary plate 4, it is used to cooperate with the size of the water flow of upper end cap 2.

[0032] As shown in Figure 3 - Figure 4 The middle part of end cap 2 is provided with opening 23 and the number is multiple, it is used to cooperate with the in and out of water flow, the middle part of the end cap 2 in upper part is rotatably connected with adjusting sleeve 24, it is used to cooperate the connection and adjustment between upper end cap 2 and shell 1, adjusting sleeve 24 is connected with center tube 3 by screw, the inner wall lower part of end cap 2 in upper part is fixedly connected with limit ring 22, it can produce a certain degree of deformation, the outer wall front part of end cap 2 in upper part is fixedly connected with arrow 21, it is used to cooperate the size of water flow, the inner wall top of end cap 2 in upper part is fixedly connected with No. The bottom of sealing pad 25 is fixedly connected with convex ring 251, it is used to cooperate with No. 2 sealing pad 43, to ensure the fixed limit and sealing between end cap 2 and auxiliary plate 4.

[0033] Further, the outer wall upper part of shell 1 is fixedly connected with fixed ring 12, it is used to cooperate with limit ring 22, to cooperate the fixing between shell 1 and end cap 2, the outer wall upper part of shell 1 is provided with scale line 11 and the number is multiple, it is used to cooperate with arrow 21, for adjusting the size of water flow, the top of shell 1 is provided with inclined plane 13, it is used to cooperate with end cap 2, to extrude sealing ring 7, to ensure the sealing and fixing between end cap 2 and shell 1.

[0034] Further, the middle part of the auxiliary plate 4 is provided with a plurality of auxiliary openings 44, which are used for cooperating with the upper end cover 2 to adjust the water flow size, the bottom of the auxiliary plate 4 is fixedly connected with a positioning rod 41, which is used for cooperating with the fixing ring 5, the top of the fixing ring 5 is provided with a plurality of positioning grooves 51, the positioning rod 41 is movably connected with the positioning grooves 51, which is used for limiting the position of the auxiliary plate 4, the middle part of the auxiliary plate 4 is provided with a ring groove 42, which is used for connecting the second sealing gasket 43 and the first sealing gasket 25, the first sealing gasket 25 is movably connected with the ring groove 42, the inside of the ring groove 42 is fixedly connected with the second sealing gasket 43, the top of the second sealing gasket 43 is provided with a recess 431, the convex ring 251 is movably connected with the recess 431, which is used for fixing the position of the upper end cover 2, and the sealing between the end cover 2 and the auxiliary plate 4 and the center pipe 3.

[0035] When it is needed to adjust the water flow size, the adjusting sleeve 24 is rotated, which will drive the upper end cover 2 connected therewith to move upwards along the center pipe 3, because the upper end cover 2 is pulled upwards by the adjusting sleeve 24, the upper end cover 2 will be driven upwards, at this time, the limiting ring 22 will be pulled from the lower part of the fixing ring 12 to be deformed, thereby being separated from the limiting of the fixing ring 12, so that the upper end cover 2 is away from the upper part of the shell 1, at this time, the first sealing gasket 25 fixed with the upper end cover 2 will be separated from the ring groove 42 and away from the second sealing gasket 43, and the end cover 2 and the upper part of the shell 1 will be separated from the sealing ring 7, then the upper end cover 2 can be rotated, so that the interval plate surface between the multiple openings 23 of the upper end cover 2 can adjust the range covered by the auxiliary openings 44 of the auxiliary plate 4, thereby adjusting the water flow size, according to the indication of the arrow 21 on the upper end cover 2, when the arrow 21 is adjusted to the appropriate scale line 11, one hand can fix the angle of the upper end cover 2, and then the other hand rotates the adjusting sleeve 24 to drive the end cover 2 to be pressed downwards, so that the limiting ring 22 of the end cover 2 is clamped in the lower part of the fixing ring 12 again, the end cover 2 and the shell 1 are pressed to deform the sealing ring 7, the gap between the shell 1 and the end cover 2 is blocked, and the fixing between the shell 1 and the end cover 2 is achieved, so that the first sealing gasket 25 and the second sealing gasket 43 are tightly contacted.

[0036] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An acid-resistant nanofiltration membrane element comprising a housing (1), characterized in that: The upper and lower parts of the shell (1) are provided with end covers (2), the end covers (2) and the shell (1) are provided with sealing rings (7) together, the middle part of the shell (1) is provided with a nanofiltration membrane core (6), the middle part of the nanofiltration membrane core (6) is provided with a center tube (3), the upper and lower parts of the center tube (3) penetrate through two end covers (2), the center tube (3) is fixedly connected with the end cover (2) located at the lower part, the center tube (3) is movably connected with the end cover (2) located at the upper part, the inner wall of the shell (1) is fixedly connected with a fixed ring (5) at the upper part, the upper part of the fixed ring (5) is movably connected with an auxiliary plate (4), the middle part of the end cover (2) is provided with a plurality of openings (23), the middle part of the end cover (2) located at the upper part is rotatably connected with an adjusting sleeve (24), the adjusting sleeve (24) is threadedly connected with the center tube (3), the inner wall of the end cover (2) located at the upper part is fixedly connected with a limiting ring (22) at the lower part, the outer wall of the shell (1) is fixedly connected with a fixed ring (12) at the upper part, the middle part of the auxiliary plate (4) is provided with a plurality of auxiliary openings (44).

2. The acid-resistant nanofiltration membrane element according to claim 1, characterized in that: The outer wall of the shell (1) is provided with a plurality of scale lines (11) at the upper part, and the top of the shell (1) is provided with an inclined surface (13).

3. The acid-resistant nanofiltration membrane element of claim 1, wherein: The outer wall of the end cover (2) located at the upper part is fixedly connected with an arrow (21) at the front part, and the inner wall of the end cover (2) located at the upper part is fixedly connected with a first sealing gasket (25) at the top.

4. The acid-resistant nanofiltration membrane element of claim 3, wherein: The bottom of the first sealing gasket (25) is fixedly connected with a convex ring (251).

5. The acid-resistant nanofiltration membrane element of claim 4, wherein: The bottom of the auxiliary plate (4) is fixedly connected with a positioning rod (41), the middle part of the auxiliary plate (4) is provided with a ring groove (42), and the inside of the ring groove (42) is fixedly connected with a second sealing gasket (43).

6. The acid-resistant nanofiltration membrane element of claim 5, wherein: The top of the second sealing gasket (43) is provided with a groove (431), and the convex ring (251) is movably connected with the groove (431).

7. The acid-resistant nanofiltration membrane element of claim 5, wherein: The top of the fixed ring (5) is provided with a plurality of positioning grooves (51), and the positioning rod (41) is movably connected with the positioning grooves (51).

8. The acid-resistant nanofiltration membrane element of claim 1, wherein: The center tube (3) is provided with a plurality of through holes (31) in the middle part.

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