CN109432871B

CN109432871B - Filter positioning cylinder

Info

Publication number: CN109432871B
Application number: CN201811598195.9A
Authority: CN
Inventors: 吴联星; 吴锦华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2021-10-29
Anticipated expiration: 2038-12-26
Also published as: CN109432871A

Abstract

The invention belongs to the technical field of purifiers and provides a filter element positioning cylinder. The locking device comprises a barrel body and a locking barrel, wherein the barrel body is arranged in a vertically through manner, a stepped hole is formed in an upper end opening of the barrel body, and a limiting groove is formed in the side wall of the bottom of the stepped hole in a surrounding manner; the locking cylinder comprises an upper cylinder section and a lower expansion section, the inner diameters of the cylinder sections are consistent, the lower part of the inner diameter of the expansion section is small, the upper part of the inner diameter of the expansion section is large, and the thickness of the side wall of the expansion section is thick at the lower part and thin at the upper part; the cylindrical section is sleeved in the stepped hole, and the expansion section is positioned in the limiting groove, so that the technical effect of locking the filter element purification unit simply, quickly and stably can be realized.

Description

Filter element positioning cylinder

Technical Field

The invention relates to the technical field of purifiers, in particular to a filter element positioning cylinder.

Background

Patent document with publication number CN206467094U discloses a water path structure for filter element arrangement, the scheme described in the document mainly adopts 3 filter element water purification units distributed in an array of lining supports 3 for filter elements, the filter element purification units are cylindrical, the filter element water purification units are positioned and locked by lining shells, the lining shells are integrally formed, the fixing tightness between the lining shells and the filter element purification units is not firm, and the phenomenon of looseness is easy to occur in the using process.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the filter element positioning cylinder, and the technical effect of locking the filter element purifying unit simply, quickly and stably is realized.

In order to achieve the purpose, the filter element positioning barrel provided by the invention comprises a barrel body and a locking barrel, wherein the barrel body is arranged in a vertically through manner, a stepped hole is formed in the upper end opening of the barrel body, and a limiting groove is formed in the side wall of the bottom of the stepped hole in a surrounding manner; the locking cylinder comprises an upper cylinder section and a lower expansion section, the inner diameters of the cylinder sections are consistent, the lower part of the inner diameter of the expansion section is small, the upper part of the inner diameter of the expansion section is large, and the thickness of the side wall of the expansion section is thick at the lower part and thin at the upper part; the cylindrical section is sleeved in the stepped hole, and the expansion section is located in the limit groove.

The technical principle of the scheme is as follows:

the expansion section is axially and uniformly provided with a plurality of cutting lines, so that the expansion section can radially expand and contract;

the inner diameter of the expansion section is small at the bottom and large at the top, and the thickness of the side wall of the expansion section is thick at the bottom and thin at the top, so that when the filter element purification unit is inserted into the expansion section of the cylinder, the outer diameter of the expansion section expands to be larger, a structure with the thick bottom and the thin top is formed, the expanded part is positioned in the limiting groove, and when the filter element purification unit is pulled outwards, the expansion section is thick at the bottom and the thin top, so that the filter element purification unit is locked more tightly, and the stable locking of the filter element purification unit is completed;

when the filter element is detached, the filter element purification unit can be detached only by pressing the locking barrel downwards all the time to enable the locking barrel to be away from the upper end of the limiting groove, and the expansion section cannot lock the filter element purification unit.

The technical effect of the scheme is as follows:

the whole locking process of the filter element purification unit is simple, rapid and stable, and due to the special structure of the expansion section, the filter element purification unit is more likely to be pulled outwards, so that the fixation is firmer, the operation is convenient, and the assembly efficiency can be obviously improved.

Further, the spacing inslot sliding fit of inflation section below has the backing ring, the spacing inslot cover of backing ring below is equipped with the spring, the both ends of spring support respectively lean on extremely the lower surface of backing ring with the bottom surface of spacing groove, under the effect of spring, a locking section of thick bamboo is to the trend that produces the rebound, and the inflation section is locked the filter core purification unit more easily.

Further, the upper port of the stepped hole is also provided with a counter bore, the outer wall of the upper end of the locking barrel is provided with a limiting table, the limiting table is located in the counter bore and is downward limiting for the locking barrel, and the counter bore is convenient for accommodating the limiting table.

Further, the expansion section is as large as the outer diameter of the cylinder section, so that the locking cylinder can be taken out conveniently during disassembly.

Furthermore, a plurality of cutting lines are uniformly distributed in the expansion section in the axial direction, so that the expansion section can be radially expanded conveniently.

Furthermore, the lower end of the expansion section is provided with a channel in a surrounding manner, and the channels are connected in series through rubber rings, so that the expansion section can be conveniently contracted inwards to clamp the filter element purification unit.

Further, the inner diameter of the cylinder section is larger than that of the cylinder body, the innermost end edge of the lower end of the expansion section is provided with a contact surface downwards, the contact surface is provided with an anti-slip layer, and the contact surface is arranged at the lower side of the innermost end edge of the lower end of the expansion section, so when the filter element purification unit is inserted downwards into the locking cylinder, the end edge of the lower end of the filter element purification unit is outwards extruded from the upper part of the end edge (the innermost end edge of the lower end of the expansion section), and the filter element purification unit is smoothly inserted downwards; when upwards extracting filter core purification unit, because the external diameter of inflation section is big end up thick down, and the internal diameter of drum section is greater than the internal diameter of barrel, consequently the upper end of spacing groove will make the inflation section inwards extrude, the lower extreme of inflation section will inwards stick up, a small part contact surface and the filter core purification unit contact of terminal edge (the most inboard terminal edge of the lower extreme of inflation section) downside will appear this moment, because the contact surface adopts the skid resistant course, the skid resistant course will increase and filter core purification unit between frictional force, filter core purification unit is difficult to extract from locking a section of thick bamboo, to sum up, filter core purification unit can inject smoothly in the locking section of thick bamboo, nevertheless because the existence of contact surface will make filter core purification unit difficult follow wherein to extract. .

Furthermore, the anti-slip layer is a rubber layer, and the friction force of the rubber layer is larger.

Furthermore, the contact surface is a circular arc surface, and the circular arc surface can enable the innermost end edge of the lower end of the expansion section to be more easily in contact with the filter element purification unit when tilting inwards.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of a cartridge according to an embodiment of the present invention;

FIG. 4 is a schematic view of a locking barrel of an embodiment of the present invention;

FIG. 5 is a schematic view of the cartridge cleaning unit of an embodiment of the present invention being pulled out of the locking barrel;

fig. 6 is a schematic view of a cartridge cleaning unit inserted from a locking cylinder according to an embodiment of the present invention.

Reference numerals:

1-a locking cylinder; 2-a cylinder body; 3-a backing ring; 4-a spring; 5-cutting line; 6-a limiting groove; 7-a stepped hole; 8-counter bore; 9-a limit table; 10-cylinder section; 11-an expansion section; 12-a channel; 13-contact surface; 14-cartridge purification unit.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

Example (b):

as shown in fig. 1, the embodiment of the present invention includes a cylinder body 2 and a locking cylinder 1,

referring to fig. 3, the cylinder 2 is vertically arranged in a through manner, a stepped hole 7 is formed in an upper port of the cylinder 2, a counter bore 8 is further formed in an upper port of the stepped hole 7, a limiting table 9 is arranged on an outer wall of an upper end of the locking cylinder 1, the limiting table 9 is located in the counter bore 8, and a limiting groove 6 is formed in a side wall of the bottom of the stepped hole 7 in a surrounding manner;

as shown in fig. 4, the locking cylinder 1 includes an upper cylindrical section 10 and a lower expansion section 11, the inner diameters of the cylindrical sections 10 are kept consistent, the inner diameter of the expansion section 11 is smaller at the bottom and larger at the top, the outer diameter of the expansion section 11 is larger at the bottom and larger at the top, the thickness of the side wall of the expansion section 11 is thicker at the bottom and thinner at the top, and a plurality of cutting lines 5 are axially and uniformly distributed on the expansion section 11;

as shown in fig. 2, the cylindrical section 10 is fitted in the stepped hole 7, and the expansion section 11 is located in the stopper groove 6.

Sliding fit has backing ring 3 in spacing groove 6 of inflation section 11 below, and the spacing inslot 6 endotheca of backing ring 3 below is equipped with spring 4, and the both ends of spring 4 support respectively and lean on to the lower surface of backing ring 3 and the bottom surface of spacing groove 6.

The lower end of the expansion section 11 is provided with a channel 12 in a surrounding way, and the channel 12 is connected in series through a rubber ring.

The inner diameter of the cylinder section 10 is larger than that of the cylinder 2, the innermost end edge of the lower end of the expansion section 11 is provided with a contact surface 13 downwards, the contact surface 13 is provided with an anti-skid layer, the anti-skid layer is a rubber layer, and the contact surface 13 is an arc surface.

As shown in fig. 6, when the filter element purification unit 14 is inserted into the locking cylinder 1, the lower end edge of the filter element purification unit 14 is pressed outwards from the upper side part of the end edge (the innermost end edge of the lower end of the expansion section 11), the filter element purification unit 14 is smoothly inserted downwards, the outer diameter of the expansion section 11 is expanded to be larger, a structure with a thicker lower part and a thinner upper part is formed, and the expanded part is located in the limiting groove 6 and locked; as shown in fig. 5, when the filter element purification unit 14 is pulled out from the locking cylinder 1, the outer diameter of the expansion section 11 is larger at the bottom and larger at the top, and the inner diameter of the cylinder section 10 is larger than the inner diameter of the cylinder body 2, so that the lower end of the expansion section 11 is tilted inward when the upper end of the limiting groove 6 presses the outer wall of the expansion section 11 inward, and at this time, a small part of the contact surface 13 on the lower side of the end edge (the end edge on the innermost side of the lower end of the expansion section 11) is in contact with the filter element purification unit 14, and the contact surface 13 is a rubber anti-slip layer, so that the filter element purification unit 14 is difficult to be pulled out from the locking cylinder 1.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A filter element positioning cylinder, characterized in that it comprises a cylinder body (2) and a locking cylinder (1),

The cylindrical body (2) is arranged vertically through, the upper port of the cylindrical body (2) is provided with a stepped hole (7), and the bottom side wall of the stepped hole (7) is surrounded by a limiting groove (6);

The locking cylinder (1) comprises an upper cylinder section (10) and a lower expansion section (11), the inner diameter of the cylinder section (10) is kept the same, and the inner diameter of the expansion section (11) is smaller in the lower part. The upper part is larger, and the thickness of the side wall of the expansion section (11) is thicker in the lower part and thinner in the upper part;

The cylindrical section (10) is sleeved in the stepped hole (7), and the expansion section (11) is located in the limiting groove (6);

A backing ring (3) is slidably fitted in the limiting groove (6) below the expansion section (11), and a spring (4) is sleeved in the limiting groove (6) below the backing ring (3), Both ends of the spring (4) abut against the lower surface of the backing ring (3) and the bottom surface of the limiting groove (6), respectively.

2 . The filter cartridge positioning cylinder according to claim 1 , wherein the upper port of the stepped hole ( 7 ) is further provided with a counterbore ( 8 ), and the outer wall of the upper end of the locking cylinder ( 1 ) is provided with a limit position. 3 . A stage (9), the limiting stage (9) is located in the counterbore (8).

3. The filter cartridge positioning cylinder according to claim 1, wherein a plurality of cutting lines (5) are uniformly distributed in the axial direction of the expansion section (11).

4 . The filter cartridge positioning cylinder according to claim 1 , wherein a channel ( 12 ) is arranged around the lower end of the expansion section ( 11 ), and the channel ( 12 ) is connected in series by a rubber ring. 5 .

5 . The filter cartridge positioning cylinder according to claim 1 , wherein the outer diameter of the expansion section ( 11 ) is larger at the bottom and thicker at the top. 6 .

6. The filter cartridge positioning cylinder according to claim 5, wherein the inner diameter of the cylindrical section (10) is larger than the inner diameter of the cylinder body (2), and the innermost part of the lower end of the expansion section (11) is The end edge is provided with a contact surface (13) downward, and the contact surface (13) is provided with an anti-skid layer.

7 . The filter cartridge positioning cylinder according to claim 6 , wherein the anti-skid layer is a rubber layer. 8 .

8 . The filter cartridge positioning cylinder according to claim 6 , wherein the contact surface ( 13 ) is a circular arc surface. 9 .