CN208935504U - A kind of vent valve for urea liquid storage tank - Google Patents
A kind of vent valve for urea liquid storage tank Download PDFInfo
- Publication number
- CN208935504U CN208935504U CN201821622381.7U CN201821622381U CN208935504U CN 208935504 U CN208935504 U CN 208935504U CN 201821622381 U CN201821622381 U CN 201821622381U CN 208935504 U CN208935504 U CN 208935504U
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- storage tank
- liquid storage
- bottom flange
- urea liquid
- guide tube
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Abstract
The utility model discloses a kind of vent valves for urea liquid storage tank, it includes bonnet, outer gas-guide tube, spool, breathable film, interior gas-guide tube and bottom flange, the bonnet, is fixed on bottom flange in which can be removably mounted, the outer gas-guide tube is connected on the bonnet, the bottom flange install with can be removably mounted on urea liquid storage tank, the spool is assemblied in bottom flange, the breathable film is set in the spool, liquid is installed below the breathable film in the bottom flange and divides pilot valve, the interior gas-guide tube is connected to the bottom end of bottom flange and its bottom offers several air holes.The above-mentioned vent valve for urea liquid storage tank is not only compact-sized, is directly installed in the storage tank of urea liquid, is not take up and places space；And the functionality of urea liquid storage tank is substantially increased, practicability reduces the failure rate of urea liquid storage tank, so that the satisfaction used the product by the user be substantially improved.
Description
Technical field
The utility model relates to a kind of urea liquid storage tanks, more particularly, to selective catalytic conversion system of diesel engine
One of (SCR) it is used for the vent valve of urea liquid storage tank.
Background technique
Currently, serious atmosphere pollution has been supervened in the fast development of motor vehicle, region composite type feature is showed.Perhaps
Mostly metropolitan atmosphere pollution turns to coal smoke via coal-smoke pollution and automotive composite type pollutes, and a small number of megalopolis are
Obviously show photochemical fog type (i.e. motor-vehicle tail-gas type) atmosphere pollution.Therefore, exhaust gas from diesel vehicle exhaust emission controls skill
The research of art and its important and extremely urgent.
From the point of view of the development of commercial vehicle, diesel engine is its major impetus.I generally can be met using supercharging technology diesel vehicle
The emission request in stage, phase il use charge inter cooling, and the Section III stage introduces electronic fuel injection technology, Section IV rank
Section needs to post-process exhaust in above-mentioned technical foundation.
Stage iv emission control exhaust after treatment system mainly there are two technology path: (1) started by optimization
Machine (internal purification technology, optimization oil spout, optimization burning etc.), which reduces PM discharge+SCR selective catalysis reduction reaction, reduces NOx row
It puts.(2) using EGR exhaust circulating technology reduce NOx emission+using particulate trap reduce PM discharge.It is more likely at present
Use the first scheme.The urea liquid storage tank of existing selective catalytic conversion system of diesel engine is generally existing to be had a single function
The shortcomings that with easily breaking down.
Utility model content
The purpose of this utility model is to provide a kind of vent valves for urea liquid storage tank, to solve the prior art
Urea liquid storage tank there are problems that having a single function and easily break down.
For this purpose, the utility model uses following technical scheme:
A kind of vent valve for urea liquid storage tank comprising bonnet, outer gas-guide tube, spool, breathable film, interior
Gas-guide tube and bottom flange, the bonnet, are fixed on bottom flange in which can be removably mounted, and the outer gas-guide tube is connected to the bonnet,
On, the bottom flange is installed on urea liquid storage tank in which can be removably mounted, and the spool is assemblied in bottom flange, the ventilated membrane
Piece is set in the spool, is equipped with liquid in the bottom flange below the breathable film and is divided pilot valve, it is described in lead
Tracheae is connected to the bottom end of bottom flange and its bottom and offers several air holes.
Particularly, metal liner is provided in the venthole of the bonnet, the outer gas-guide tube is connected to the metal
On bushing pipe, to increase the intensity of outer gas-guide tube junction.
Particularly, the bonnet, is assemblied on bottom flange by buckle structure, and the fitting surface of bonnet, and bottom flange
Between be provided with sealing rubber pad.
Particularly, the bottom of the bottom flange is provided with external screw thread, and being arranged on the corresponding urea liquid storage tank has
The mounting hole of internal screw thread, bottom flange are tightened by helicitic texture and are assemblied in mounting hole, and the interior gas-guide tube protrudes into the urea
In solution storage tank.
Particularly, O-shaped rubber seal is provided between the bottom flange and the mounting hole.
Particularly, it there are four the air hole settings, is distributed on the side wall of the interior air guide bottom of the tube sustained height.
The beneficial effects of the utility model are, the vent valve for urea liquid storage tank is not compared with prior art
It is only compact-sized, it is directly installed in the storage tank of urea liquid, is not take up and places space；And it is molten to substantially increase urea
The functionality of liquid storage tank, practicability reduce the failure rate of urea liquid storage tank, use the product by the user to be substantially improved
Satisfaction.
Detailed description of the invention
Fig. 1 is the structural representation for the vent valve for urea liquid storage tank that specific embodiment of the present invention provides
Figure；
Fig. 2 is the installation diagram for the vent valve for urea liquid storage tank that specific embodiment of the present invention provides.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
It please refers to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of vent valve for urea liquid storage tank includes upper valve
The outer gas-guide tube 2 of lid 1, PVC, spool 3, breathable film 4, interior gas-guide tube 5 and bottom flange 6 offer venthole 7 on bonnet, 1, lead to
Metal liner 8 is set in stomata 7, and the outer gas-guide tube 2 of PVC is connected on metal liner 8, and metal liner 8 is used to enhance herein strong
Degree, bonnet, 1 is fixed at the upper end opening of bottom flange 6 in which can be removably mounted by buckle 9, and the assembly of bonnet, 1 and bottom flange 6
Sealing rubber pad 10 is provided between face.Spool 3 is assemblied in bottom flange 6, and breathable film 4 is set in the spool 3, is breathed freely
Diaphragm 4 can prevent extraneous dust from entering inside urea tank body 11, pollute urea liquid.It is smooth surface that breathable film 4, which contacts urea face,
Urea liquid is not easy to adhere to, and reduces the risk of urea crystals blocking ventilated membrane.
The bottom of bottom flange 6 is provided with external screw thread, corresponds to setting tool internal thread mounting hole on urea tank body 11, under
Valve deck 6 is tightened by helicitic texture to be assemblied in mounting hole, and O-shaped rubber seal 12 is provided between bottom flange 6 and mounting hole,
Liquid is installed in the lower section of breathable film 4 in bottom flange 6 and divides pilot valve 13, liquid divides pilot valve 13 that can prevent urea liquid from directly rushing
Breathable film is hit, to increase the service life of breathable film 4.
Interior gas-guide tube 5 is connected to the bottom end of bottom flange 6 and its bottom is opened up there are four air hole 14, and four air holes 14 are equal
It is distributed on the side wall of interior 5 bottom sustained height of gas-guide tube.And interior gas-guide tube 5 protrudes into urea tank body 11.The length of interior gas-guide tube 5
It is to be determined by 11 Theoretical Design volume of urea tank body.When urea tank body 11, which fills urea liquid, reaches theoretical displacement, inside lead
The air hole 14 of 5 bottom of tracheae is immersed in liquid level hereinafter, to close the gas-permeable channels of entire ventilating valve apparatus.
The working principle of the above-mentioned vent valve for urea liquid storage tank are as follows: when urea tank body 11 fills urea liquid,
Air divides pilot valve 13, breathable film 4, bonnet, 1, PVC by liquid by four air holes 14 on interior gas-guide tube 5 in tank
Outer gas-guide tube 2 discharges outside the tank；When urea tank body 11 consumes urea liquid, the outer air of tank by the outer gas-guide tube 2 of PVC, bonnet, 1,
Breathable film 4, liquid divide pilot valve 13 and interior gas-guide tube 5, into tank.
Above embodiments only elaborate the basic principles and features of the present invention, and the utility model is not by above-mentioned example
Limitation, on the premise of not departing from the spirit and scope of the utility model, the present invention has various changes and changes, these changes
Change and change is fallen within the scope of the claimed invention.The utility model requires protection scope is wanted by appended right
Ask book and its equivalent thereof.
Claims (6)
1. a kind of vent valve for urea liquid storage tank, which is characterized in that it include bonnet, outer gas-guide tube, spool, thoroughly
Air film piece, interior gas-guide tube and bottom flange, the bonnet, are fixed on bottom flange in which can be removably mounted, and the outer gas-guide tube is connected to institute
It states on bonnet, the bottom flange is installed on urea liquid storage tank in which can be removably mounted, and the spool is assemblied in bottom flange, institute
It states breathable film to be set in the spool, liquid is installed below the breathable film in the bottom flange and divides pilot valve,
The interior gas-guide tube is connected to the bottom end of bottom flange and its bottom offers several air holes.
2. the vent valve according to claim 1 for urea liquid storage tank, which is characterized in that the bonnet, leads to
Metal liner is provided in stomata, the outer gas-guide tube is connected on the metal liner.
3. the vent valve according to claim 1 for urea liquid storage tank, which is characterized in that the bonnet, passes through
Buckle structure is assemblied on bottom flange, and is provided with sealing rubber pad between bonnet, and the fitting surface of bottom flange.
4. the vent valve according to claim 1 for urea liquid storage tank, which is characterized in that the bottom of the bottom flange
Portion is provided with external screw thread, and setting tool internal thread mounting hole, bottom flange pass through screw thread on the corresponding urea liquid storage tank
Structure, which is tightened, to be assemblied in mounting hole, and the interior gas-guide tube protrudes into the urea liquid storage tank.
5. the vent valve according to claim 4 for urea liquid storage tank, which is characterized in that the bottom flange and institute
It states and is provided with O-shaped rubber seal between mounting hole.
6. the vent valve according to claim 1 for urea liquid storage tank, which is characterized in that the air hole setting
There are four, it is distributed on the side wall of the interior air guide bottom of the tube sustained height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821622381.7U CN208935504U (en) | 2018-09-30 | 2018-09-30 | A kind of vent valve for urea liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821622381.7U CN208935504U (en) | 2018-09-30 | 2018-09-30 | A kind of vent valve for urea liquid storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935504U true CN208935504U (en) | 2019-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821622381.7U Active CN208935504U (en) | 2018-09-30 | 2018-09-30 | A kind of vent valve for urea liquid storage tank |
Country Status (1)
| Country | Link |
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| CN (1) | CN208935504U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114274A (en) * | 2018-09-30 | 2019-01-01 | 凯龙高科技股份有限公司 | A kind of vent valve for urea liquid storage tank |
-
2018
- 2018-09-30 CN CN201821622381.7U patent/CN208935504U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114274A (en) * | 2018-09-30 | 2019-01-01 | 凯龙高科技股份有限公司 | A kind of vent valve for urea liquid storage tank |
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