CN216170319U

CN216170319U - Convex 3D urea filter screen subassembly

Info

Publication number: CN216170319U
Application number: CN202122573050.7U
Authority: CN
Inventors: 王璇; 张广芹; 孙毛忍; 董琼琼; 邵晓刚; 牛雨飞
Original assignee: Hefei Lanhai Electronic Technology Co ltd
Current assignee: Hefei Lanhai Electronic Technology Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-05
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses an arc-shaped 3D urea filter screen assembly which comprises a filter shell frame, a filter inner shell frame and filter screen cloth, wherein the filter shell frame comprises an arc-shaped top shell plate, an arc-shaped bottom outer frame, a left arc vertical plate and a right arc vertical plate; the filtering inner shell frame comprises a bottom seat plate, a left inner vertical plate, a right inner vertical plate and a top inner seat plate, wherein the bottom seat plate is attached to the bottom outer frame; the filter inner shell frame is inserted into the filter outer shell frame, and the filter screen cloth is clamped between the filter outer shell frame and the filter inner shell frame. The filter screen cloth has reasonable structural design, is convenient for quick assembly and disassembly of the filter screen cloth, and is convenient for subsequent cleaning and replacement of the filter screen cloth; the filter screen cloth has reasonable structural design, can effectively improve the urea filtering precision and increase the dust holding capacity.

Description

Convex 3D urea filter screen subassembly

Technical Field

The utility model relates to the technical field of urea filtration, in particular to an arc-shaped 3D urea filter screen assembly.

Background

The vehicle urea is decomposed into ammonia at a certain temperature, selective catalytic reduction can be carried out on Nitrogen Oxides (NOX), and NOX in the exhaust gas is reduced into N2 and H2O, so that the purposes of energy conservation and emission reduction are achieved. Since environmental protection departments of various countries propose to further reduce the nitrogen oxide pollution discharged by diesel engines, which is commonly called as European IV standard, engine manufacturers begin to use SCR systems (i.e. selective catalytic reduction systems) to meet the requirements of the environmental protection departments. The SCR system comprises a urea tank and an SCR catalytic reaction tank. The operation process of the SCR system is as follows: when the nitrogen oxide is found in the exhaust pipe, the urea solution in the urea tank is extracted by the urea pump and conveyed to the injection unit, the urea for the vehicle and the nitrogen oxide are injected by the injection unit to generate oxidation-reduction reaction in the SCR catalytic reaction tank, and pollution-free nitrogen and water vapor are generated and discharged.

The filter screen component adopted by the existing SCR urea box sensor has relatively low urea filtering precision, and can influence the normal work of subsequent equipment; and once the filter screen assembly is blocked, the whole filter screen assembly needs to be replaced, and the later maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circular arc-shaped 3D urea filter screen assembly to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a circular arc-shaped 3D urea filter screen assembly comprises a filter shell frame, a filter inner shell frame and filter screen cloth, wherein the filter shell frame comprises a circular arc-shaped top shell plate, a circular arc-shaped bottom outer frame, a left arc vertical plate and a right arc vertical plate;

the filtering inner shell frame comprises a bottom seat plate, a left inner vertical plate, a right inner vertical plate and a top inner seat plate, wherein the bottom seat plate is attached to a bottom outer frame;

the filter inner shell frame is inserted into the filter outer shell frame, and the filter screen cloth is clamped between the filter outer shell frame and the filter inner shell frame.

Preferably, a rubber sealing ring sleeved on the urea pipe is arranged in the pipe inlet.

Preferably, the inlet pipe is further internally embedded with a limiting rubber sleeve for pressing and fixing the rubber sealing ring, a convex ring part is arranged on the outer wall of the circumference of the limiting rubber sleeve, and the inner wall of the circumference of the inlet pipe is provided with an annular embedded groove used for being matched with the convex ring part.

Preferably, still an organic whole is connected with a plurality of vertical ribs between bottom outline and the top shell plate, still an organic whole is connected with horizontal circular arc rib between left side arc riser and the right side arc riser, and horizontal circular arc rib also with each vertical rib an organic whole is connected.

Preferably, still an organic whole is connected with horizontal inner arc board between riser in the left side and the right side, and the high position of horizontal inner arc board corresponds with the high position of horizontal circular arc rib.

Preferably, the boss of the seat plate is also provided with an arc rib plate corresponding to the lower part of the pipe inlet.

Preferably, the filter screen cloth comprises a nylon rough filtering woven layer, a fine filtering expansion woven layer and a protective metal mesh layer which are sequentially arranged from outside to inside.

Compared with the prior art, the utility model has the beneficial effects that: the filter screen cloth is clamped between the filter outer shell frame and the filter inner shell frame, so that the filter screen cloth is convenient to assemble and disassemble quickly, the filter screen cloth is convenient to clean and replace subsequently, all filter screen components do not need to be replaced integrally, and later-period maintenance cost is saved; filter screen cloth includes nylon coarse filtration braided layer, the essence that sets gradually from outer to interior expands weaving layer and protection metal mesh layer, and structure setting such for filter screen cloth not only has good expansion effect, can also effectively improve urea filter fineness, has increased the dust holding capacity, and life is longer.

Drawings

FIG. 1 is a schematic perspective view of a circular arc 3D urea screen assembly;

FIG. 2 is a schematic view of a partially cut-away configuration of a circular arc 3D urea screen assembly;

FIG. 3 is a schematic structural diagram of a filter inner shell frame in a circular arc-shaped 3D urea filter screen assembly.

In the figure: 1-filtration shell frame, 11-top shell plate, 12-bottom outer frame, 13-vertical ribs, 14-right side arc vertical plate, 15-left side arc vertical plate, 16-transverse arc ribs, 17-pipe inlet, 171-annular embedded groove, 2-filtration inner shell frame, 21-bottom seat plate, 22-seat plate boss, 23-arc rib plate, 24-left side inner vertical plate, 25-right side inner vertical plate, 26-top inner seat plate, 3-filtration mesh cloth, 4-limiting rubber sleeve, 41-convex ring part and 5-rubber sealing ring.

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 given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1 to 3, a circular arc 3D urea filter screen assembly comprises a filter housing frame 1, a filter inner housing frame 2 and filter screen cloth 3, wherein the filter housing frame 1 comprises a circular arc top housing plate 11, a circular arc bottom outer frame 12, a left arc vertical plate 15 and a right arc vertical plate 14, the left end and the right end of the top housing plate 11 are respectively and integrally connected with the left arc vertical plate 15 and the right arc vertical plate 14, the bottoms of the left arc vertical plate 15 and the right arc vertical plate 14 are integrally connected with the left end and the right end of the bottom outer frame 12, and an inlet 17 extends from the right end of the top housing plate 11;

the filtering inner shell frame 1 comprises a bottom seat plate 21, a left inner vertical plate 24, a right inner vertical plate 25 and a top inner seat plate 26, wherein the bottom seat plate 21 is attached to the bottom outer frame 12, a seat plate boss 22 is arranged on the upper end face of the bottom seat plate 21, the left end and the right end of the seat plate boss 22 are integrally connected with the left inner vertical plate 24 and the right inner vertical plate 25, and the tops of the left inner vertical plate 24 and the right inner vertical plate 25 are integrally connected with the left end and the right end of the top inner seat plate 26;

the filtering inner shell frame 2 is inserted into the filtering outer shell frame 1, and the filtering mesh cloth 3 is clamped between the filtering outer shell frame 1 and the filtering inner shell frame 2.

The filter screen cloth 3 is clamped between the filter outer shell frame 1 and the filter inner shell frame 2, so that the filter screen cloth 3 is convenient to assemble and disassemble quickly, the filter screen cloth is convenient to clean and replace subsequently, all filter screen components do not need to be replaced integrally, and the later maintenance cost is saved. When the filter screen cloth 3 is disassembled, the filter inner shell frame 2 is pulled out from the bottom of the filter outer shell frame 1, and then the filter screen cloth 3 can be taken out. After the assembly, the lower side of the filter screen cloth 3 is clamped between the seat plate boss 22 and the bottom outer frame 12, and the upper side of the filter screen cloth 3 is clamped between the top outer shell plate 11 and the top inner seat plate 26, so that the clamping is stable and reliable.

Wherein, be provided with in the mouth of pipe 17 and be used for the suit rubber seal 5 on the urea pipe. The urea pipe is coated by the rubber sealing ring 5, so that a good sealing effect is achieved, and urea which is not filtered is prevented from directly entering the urea pipe.

The limiting rubber sleeve 4 used for pressing and fixing the rubber sealing ring 5 is further embedded in the pipe inlet 17, a convex ring portion 41 is arranged on the outer wall of the circumference of the limiting rubber sleeve 4, and an annular embedding groove 171 used for being matched with the convex ring portion 41 is formed in the inner wall of the circumference of the pipe inlet 17. The mounting structure of the rubber sealing ring 5 is reasonable in design and convenient to disassemble and assemble.

As a further scheme, a plurality of vertical ribs 13 are further integrally connected between the bottom outer frame 12 and the top shell plate 11, a horizontal arc rib 16 is further integrally connected between the left arc riser 15 and the right arc riser 14, and the horizontal arc rib 16 is also integrally connected with each vertical rib 13.

A transverse inner arc plate 27 is further integrally connected between the left inner vertical plate 24 and the right inner vertical plate 25, and the height position of the transverse inner arc plate 27 corresponds to the height position of the transverse arc rib 16. Through the setting of vertical rib 13, horizontal circular arc rib 16 and horizontal inner arc board 27 for filter screen cloth 3 can smooth expansion, has certain support stable effect.

Wherein, an arc rib plate 23 is arranged below the seat plate boss 22 corresponding to the pipe inlet 17. The arc rib plates 23 can limit the bottom of the urea pipe, and the urea pipe is prevented from being directly contacted with the seat plate boss 22 to influence the urea pumping effect.

The filter screen cloth 3 comprises a nylon rough filtering woven layer, a fine filtering expansion woven layer and a protective metal mesh layer which are sequentially arranged from outside to inside. The structure is arranged, so that the filter screen cloth 3 has a good expansion effect, the urea filtering precision can be effectively improved, the dust holding capacity is increased, and the service life is longer.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

Claims

1. The utility model provides a convex 3D urea filter screen subassembly which characterized in that: the filter screen cloth comprises a filter shell frame (1), a filter inner shell frame (2) and filter screen cloth (3), wherein the filter shell frame (1) comprises a circular arc-shaped top shell plate (11), a circular arc-shaped bottom outer frame (12), a left arc vertical plate (15) and a right arc vertical plate (14), the left end and the right end of the top shell plate (11) are respectively and integrally connected with the left arc vertical plate (15) and the right arc vertical plate (14), the bottoms of the left arc vertical plate (15) and the right arc vertical plate (14) are integrally connected with the left end and the right end of the bottom outer frame (12), and the right end of the top shell plate (11) is provided with an inlet pipe opening (17) in an extending mode;

the filtering inner shell frame (2) comprises a bottom seat plate (21), a left inner vertical plate (24), a right inner vertical plate (25) and a top inner seat plate (26), wherein the bottom seat plate (21) is attached to a bottom outer frame, a seat plate boss (22) is arranged on the upper end face of the bottom seat plate (21), the left end and the right end of the seat plate boss (22) are integrally connected with the left inner vertical plate (24) and the right inner vertical plate (25), and the tops of the left inner vertical plate (24) and the right inner vertical plate (25) are integrally connected with the left end and the right end of the top inner seat plate (26);

the filtering inner shell frame (2) is inserted into the filtering outer shell frame (1), and the filter screen cloth (3) is clamped between the filtering outer shell frame (1) and the filtering inner shell frame (2).

2. The circular arc-shaped 3D urea filter screen assembly according to claim 1, wherein: and a rubber sealing ring (5) sleeved on the urea pipe is arranged in the pipe inlet (17).

3. The circular arc-shaped 3D urea filter screen assembly according to claim 2, wherein: the rubber sealing ring sealing device is characterized in that a limiting rubber sleeve (4) used for pressing and fixing the rubber sealing ring (5) is further embedded in the pipe inlet (17), a convex ring part (41) is arranged on the outer wall of the circumference of the limiting rubber sleeve (4), and an annular embedded groove (171) used for being matched with the convex ring part (41) is formed in the inner wall of the circumference of the pipe inlet (17).

4. The circular arc-shaped 3D urea filter screen assembly according to claim 1, wherein: still an organic whole is connected with a plurality of vertical ribs (13) between bottom outline (12) and top shell plate (11), still an organic whole is connected with horizontal circular arc rib (16) between left side arc riser (15) and right side arc riser (14), and horizontal circular arc rib (16) also with each vertical rib (13) an organic whole is connected.

5. The circular arc-shaped 3D urea filter screen assembly according to claim 4, wherein: still an organic whole is connected with horizontal inner arc board (27) between riser (25) in left side inner vertical board (24) and the right side, and the high position of horizontal inner arc board (27) corresponds with the high position of horizontal circular arc rib (16).

6. The circular arc-shaped 3D urea filter screen assembly according to claim 1, wherein: the seat plate boss (22) is also provided with an arc rib plate (23) corresponding to the lower part of the pipe inlet (17).

7. The circular arc-shaped 3D urea filter screen assembly according to claim 1, wherein: the filter screen cloth (3) comprises a nylon rough filtering woven layer, a fine filtering expansion woven layer and a protective metal mesh layer which are sequentially arranged from outside to inside.