CN220176259U - Filter screen for urea sensor - Google Patents

Abstract

The utility model relates to a filter screen for a urea sensor, which comprises an annular plate and a plurality of filter screens, wherein the filter screens are arranged on the annular plate, two dismounting mechanisms are arranged on the annular plate, a connecting mechanism is arranged on the dismounting mechanisms, a plurality of through holes are formed in the annular plate, and the filter screens are respectively and fixedly connected in the through holes. This a filter screen for urea sensor through setting up annular plate, filter screen, dismouting mechanism and coupling mechanism, and dismouting mechanism can be to carrying out the dismouting with the annular plate, takes off the back with the annular plate, is convenient for clear up the outside impurity of filter screen, or wholly change annular plate and filter screen, has improved cleaning efficiency, has reduced the influence to filtration efficiency to possess the advantage of being convenient for maintain, made things convenient for the use, solved the impurity that the clearance is meticulous filter screen outer wall comparatively difficult, influenced filtration efficiency's problem.

Description

Filter screen for urea sensor

Technical Field

The utility model relates to the technical field of urea sensors, in particular to a filter screen for a urea sensor.

Background

The urea aqueous solution used in the industry is called AdBlue, is nontoxic, clean, difficult to catch fire and free of explosion hazard, is used for carrying out chemical reaction with nitrogen oxides to reduce nitrogen oxide emission, a container for containing the urea aqueous solution is called a urea box, a urea sensor is arranged on the urea box, and when the urea aqueous solution in the urea box enters the urea sensor, a filter screen is needed to filter impurities in the urea aqueous solution.

According to the search, according to the Chinese application number CN202122675417.6, a filter screen assembly structure of the urea sensor is described, and the utility model content of the filter screen assembly structure is described as' the structure is convenient to use, impurities are filtered twice through a filter screen cloth and a fine filter screen, so that the filtering effect on the impurities can be improved, and the influence of the impurities on the service life of the urea sensor is avoided; the sealing ring can be positioned through the compression ring, and the sealing performance of the connecting pipeline can be improved through the sealing ring; the fan-shaped structure can improve the filtering area of the structure.

Wherein, this urea sensor's filter screen package assembly, outside pipe one end and urea sensor intercommunication, outside pipe other end inserts the inside of fixed cover, the sealing washer seals outside pipe, the urea aqueous solution after filtering filter screen cloth and meticulous filter screen enters into urea sensor's inside, filter screen cloth and meticulous filter screen filter the impurity in the urea aqueous solution, partial impurity can adhere to the outside of filter screen cloth and meticulous filter screen's outside, but meticulous filter screen fixed connection is between adjacent connection slat, clear up meticulous filter screen outer wall's impurity comparatively difficultly, filtration efficiency has been influenced, need improve, so propose a filter screen for urea sensor in order to solve above-mentioned problem.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the filter screen for the urea sensor, which has the advantages of convenient maintenance and the like, and solves the problems that the impurities on the outer wall of a fine filter screen are difficult to clean and the filtering efficiency is influenced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a filter screen for urea sensor, includes annular plate and a plurality of filter screen, and is a plurality of the filter screen all sets up on the annular plate, be provided with two dismouting mechanisms on the annular plate, the top be provided with coupling mechanism on the dismouting mechanism.

Further, a plurality of through holes are formed in the annular plate, and a plurality of filter screens are fixedly connected to the inside of the through holes respectively.

Further, the dismounting mechanism comprises a shell, a first mounting plate is fixedly mounted on the inner side wall of the shell, a second mounting plate which is in threaded mounting with the first mounting plate is fixedly mounted on the outer side of the annular plate, and a first sealing ring which is attached to the first mounting plate is mounted on the inner wall of the shell in an interference mode.

Further, the external screw thread has been seted up to the outside of first mounting panel, the internal screw thread with external screw thread assorted has been seted up to the inside of second mounting panel.

Further, coupling mechanism includes the connecting pipe, connecting pipe fixed connection is in the inside of top shell, second sealing washer and clamping ring are installed to the inner wall interference of connecting pipe, the top of second sealing washer is laminated with the bottom of clamping ring mutually.

Further, the bottom of the shell below is fixedly provided with a base.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

this a filter screen for urea sensor through setting up annular plate, filter screen, dismouting mechanism and coupling mechanism, and dismouting mechanism can be to carrying out the dismouting with the annular plate, takes off the back with the annular plate, is convenient for clear up the outside impurity of filter screen, or wholly change annular plate and filter screen, has improved cleaning efficiency, has reduced the influence to filtration efficiency to possess the advantage of being convenient for maintain, made things convenient for the use.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an enlarged view of the utility model at A in FIG. 1;

FIG. 3 is an enlarged view of the utility model at B in FIG. 1;

fig. 4 is a front view of the present utility model.

In the figure: the device comprises a ring plate 1, a filter screen 2, a disassembly and assembly mechanism 3, a shell 31, a first mounting plate 32, a second mounting plate 33, a first sealing ring 34, a connecting mechanism 4, a connecting pipe 41, a second sealing ring 42, a compression ring 43 and a base 5.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a filter screen for a urea sensor in this embodiment includes an annular plate 1 and a plurality of filter screens 2, wherein the plurality of filter screens 2 are all disposed on the annular plate 1, two dismounting mechanisms 3 are disposed on the annular plate 1, and a connecting mechanism 4 is disposed on the upper dismounting mechanism 3.

Specifically, dismouting mechanism 3 can be to carrying out the dismouting with annular plate 1, take off back with annular plate 1, be convenient for clear up the outside impurity of filter screen 2, or wholly change annular plate 1 with filter screen 2, improved cleaning efficiency, reduced the influence to filtration efficiency.

In this embodiment, a plurality of through holes are formed in the annular plate 1, and a plurality of filter screens 2 are fixedly connected to the inside of the plurality of through holes.

Specifically, the filter screen 2 may filter impurities in the urea aqueous solution.

In this embodiment, the dismounting mechanism 3 includes a housing 31, a first mounting plate 32 is fixedly mounted on an inner side wall of the housing 31, a second mounting plate 33 is fixedly mounted on an outer portion of the annular plate 1 and is in threaded mounting with the first mounting plate 32, and a first sealing ring 34 attached to the first mounting plate 32 is mounted on an inner wall of the housing 31 in an interference manner.

Specifically, by rotating the housing 31 to separate the first mounting plate 32 from the second mounting plate 33, the housing 31 can be detached from the annular plate 1, and by rotating the housing 31 to screw the first mounting plate 32 to the second mounting plate 33, the first seal ring 34 has a sealing effect, and the mounting tightness is improved.

In this embodiment, the first mounting plate 32 is externally provided with external threads, and the second mounting plate 33 is internally provided with internal threads matching the external threads.

Specifically, the first mounting plate 32 and the second mounting plate 33 are connected in a simple manner, and the disassembly is convenient and quick.

In this embodiment, the connection mechanism 4 includes a connection pipe 41, the connection pipe 41 is fixedly connected to the inside of the upper housing 31, the inner wall of the connection pipe 41 is provided with a second sealing ring 42 and a pressing ring 43 in an interference manner, and the top of the second sealing ring 42 is attached to the bottom of the pressing ring 43.

Specifically, one end of the external pipe is communicated with the urea sensor, and the other end of the external pipe is inserted into the compression ring 43 and the second sealing ring 42, so that the second sealing ring 42 plays a sealing role, and the connection tightness is improved.

In this embodiment, the base 5 is fixedly mounted on the bottom of the lower housing 31.

Specifically, the base 5 is placed on the inner bottom wall of the urea tank.

The working principle of the embodiment is as follows:

one end of an external pipe is communicated with the urea sensor, the other end of the external pipe is inserted into the compression ring 43 and the second sealing ring 42, the second sealing ring 42 plays a role in sealing, the connection tightness is improved, the base 5 is placed on the inner bottom wall of the urea box, the filter screen 2 can filter impurities in urea aqueous solution, and the filtered urea aqueous solution enters the urea sensor through the external pipe; through rotating shell 31, make first mounting panel 32 and second mounting panel 33 separation, can pull down shell 31 from annular plate 1, through rotating shell 31, make first mounting panel 32 and second mounting panel 33 threaded connection, first sealing washer 34 play sealed effect, improved the installation leakproofness, be convenient for clear up the outside impurity of filter screen 2, or wholly change annular plate 1 with filter screen 2, improved cleaning efficiency, reduced the influence to filtration efficiency, thereby possess the advantage of being convenient for maintain, convenient to use.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A filter screen for urea sensor, includes annular plate (1) and a plurality of filter screen (2), a plurality of filter screen (2) all set up on annular plate (1), its characterized in that: two dismounting mechanisms (3) are arranged on the annular plate (1), and a connecting mechanism (4) is arranged on the dismounting mechanism (3) above the dismounting mechanism.

2. A screen for a urea sensor as set forth in claim 1, wherein: the inside of annular plate (1) has offered a plurality of through-holes, a plurality of filter screen (2) are fixed connection respectively in the inside of a plurality of through-holes.

3. A screen for a urea sensor as set forth in claim 1, wherein: the dismounting mechanism (3) comprises a shell (31), a first mounting plate (32) is fixedly mounted on the inner side wall of the shell (31), a second mounting plate (33) which is in threaded mounting with the first mounting plate (32) is fixedly mounted on the outer portion of the annular plate (1), and a first sealing ring (34) which is attached to the first mounting plate (32) is mounted on the inner wall of the shell (31) in an interference manner.

4. A screen for a urea sensor as set forth in claim 3, wherein: external threads are formed on the outer portion of the first mounting plate (32), and internal threads matched with the external threads are formed on the inner portion of the second mounting plate (33).

5. A screen for a urea sensor as set forth in claim 3, wherein: the connecting mechanism (4) comprises a connecting pipe (41), the connecting pipe (41) is fixedly connected to the inside of the upper shell (31), a second sealing ring (42) and a pressing ring (43) are installed on the inner wall of the connecting pipe (41) in an interference mode, and the top of the second sealing ring (42) is attached to the bottom of the pressing ring (43).

6. A screen for a urea sensor as set forth in claim 3, wherein: the bottom of the shell (31) below is fixedly provided with a base (5).