CN212337410U - Liquid-sealed urea tank air filter - Google Patents
Liquid-sealed urea tank air filter Download PDFInfo
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- CN212337410U CN212337410U CN202020810192.3U CN202020810192U CN212337410U CN 212337410 U CN212337410 U CN 212337410U CN 202020810192 U CN202020810192 U CN 202020810192U CN 212337410 U CN212337410 U CN 212337410U
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- urea tank
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Abstract
The utility model relates to a liquid seal type urea tank air filter, which aims to solve the problem that the prior urea tank is communicated with the outside to breathe and ventilate, and the utility model constructs a liquid seal type urea tank air filter which comprises an air filter and a liquid seal type liquid collecting cup; the air filter comprises a filter element arranged in a filter element containing cavity formed by a filter element seat and a filter element cover; the filter element seat is hermetically arranged at the upper port part of the liquid collecting cup; a urea tank connecting port used for being connected with the urea tank is arranged on the upper part of the cup wall of the liquid-sealed liquid collecting cup; the liquid-sealed liquid collecting cup is provided with a bent pipe which is communicated with the inner cavity and the outside of the liquid-sealed liquid collecting cup. When in use, the liquid seal type urea tank air filter can automatically collect raffinate and automatically discharge liquid, and can separate gas and liquid, thereby effectively avoiding the air filter element from being blocked by urea crystals; the structure is simple, the assembly and disassembly are convenient, and the observation and the maintenance are convenient; even if the air filter element is blocked, impurities can be filtered by water washing when air suction is guaranteed, and whether the air filter element is blocked or not can be judged by external observation.
Description
Technical Field
The utility model relates to an air cleaner, more specifically say, relate to a liquid seal formula urea tank air cleaner.
Background
The urea liquid is needed to purify tail gas after the four emission stages of the engineering machinery, and a urea tank is newly added in the machine. When the urea tank is filled with urea liquid, the engine works and uses the urea liquid, and even when the engine is shut down, in order to prevent the residual liquid in the pipeline from freezing and blocking the pipeline, the urea pump can suck back the urea liquid in the pipeline, and the air volume in the tank body changes at these times. In order to prevent the tank body from deforming, a breathing hole is added, so that the urea tank is communicated with the external atmosphere.
The breathing mouth can inhale tiny impurities such as dust, microorganism, and the microorganism breeds in urea and combines to plug up urea imbibition filter core and urea pump filter core with the dust, consequently needs stop in source (breathing mouth). However, the urea solution often overflows from the breathing port due to the fluctuation of the liquid level in the urea solution filling, suck-back and use processes, the overflow amount is related to the filling overfill amount, the size of the urea tank and the shape of the urea tank, and if a filter element is added at the breathing port, urea crystals are easy to block the filter element, so a gas-liquid separation filter is required to be designed, and the urea solution can be prevented from entering the filter element to prevent blockage.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a liquid seal formula urea tank air cleaner for solving the problem that the urea jar communicates with each other with the outside and breathes the air of taking a breath, make the urea jar can normally take a breath with the outside, filter impurity and difficult jam.
The utility model discloses a realize that the technical scheme of its purpose is like: the air filter of the liquid-sealed urea tank is constructed and is characterized by comprising an air filter and a liquid-sealed liquid collecting cup;
the air filter comprises a filter element seat, a filter element cover which is fixed on the filter element seat in an inverted manner, and a filter element arranged in a filter element containing cavity formed by the filter element seat and the filter element cover, wherein the filter element divides the filter element containing cavity into an inner cavity and an outer cavity, and the outer cavity is communicated with the outside of the filter element cover;
the filter element seat is hermetically arranged at the upper port part of the liquid-sealed liquid collecting cup, and is provided with a vent hole for communicating the inner cavity with the upper space of the liquid-sealed liquid collecting cup; a urea tank connecting port used for being connected with the urea tank is arranged on the upper part of the cup wall of the liquid-sealed liquid collecting cup; the liquid-sealed liquid collection cup is provided with a bent pipe, the first end of the bent pipe is communicated with the bottom of the inner cavity of the liquid-sealed liquid collection cup, the second end of the bent pipe is communicated with the outside of the liquid-sealed liquid collection cup, the height of any position of the inner hole of the bent pipe is lower than the height of the position of the urea tank connecting port, and the height of at least one section of the inner hole of the bent pipe is higher than the height of the position of the first.
In the utility model, when the air filter is normally used, the air in the urea tank is communicated with the outside through the urea tank connecting port at the upper part of the liquid collecting cup, the vent hole on the filter element seat, the filter element and other parts, or the external air enters the urea tank through the parts, so that the balance between the air pressure in the urea tank and the outside is realized; when the filter core was blockked up, when the atmospheric pressure was less than outside atmospheric pressure and need breathe in the urea jar, outside air then gets into behind the liquid seal formula collection liquid cup through the return bend and gets into the urea jar through the urea jar connector, realizes that the external atmospheric pressure is balanced in the urea jar, and the air that gets into through the return bend is by the washing of liquid seal formula collection liquid cup interior liquid seal water, can filter most impurity, reaches clean air's mesh. If the urea liquid in the urea tank overflows and enters the liquid collecting cup through the urea tank connecting port, when the liquid level of the liquid collecting cup exceeds a certain height, the urea liquid overflows through the bent pipe and cannot overflow through the filter element, and the urea liquid is prevented from crystallizing on the filter element.
In the liquid seal type urea tank air filter, the middle part of the filter element seat is provided with the filter element cover mounting column which extends upwards, and the top end of the filter element cover mounting column is fixedly connected with the filter element cover.
In the liquid seal type air filter for the urea tank, the filter element seat is provided with the annular retainer ring, the annular retainer ring is positioned on the inner side of the lower edge of the side wall of the filter element cover, and a ventilation gap for communicating the outside of the filter element cover and the cavity of the filter element is arranged between the annular retainer ring and the side wall of the filter element cover. Furthermore, the filter element seat is provided with a plurality of bosses which are uniformly arranged around the center of the filter element seat at intervals outside the annular retainer ring, and the lower end of the filter element cover is placed on the bosses. The annular retainer ring on the filter element seat can block external rainwater from entering the filter element containing cavity.
In the above-mentioned liquid seal formula urea tank air cleaner, air cleaner still includes the baffle, baffle position height is higher than the position height of urea tank connector, the air vent setting on the filter core seat is in filter core seat bottom plate middle part, the baffle is fixed in filter core seat bottom plate below, the air vent is located on the filter core seat directly over the baffle, the baffle with the clearance that communicates air vent and liquid seal formula liquid collecting cup upper portion space has between the filter core seat bottom plate. The baffle can block the liquid drops splashed upwards by the liquid collecting cup, so that the liquid drops in the liquid collecting cup are prevented from entering the inner cavity through the vent hole in the filter element seat and being adhered to the filter element.
In the liquid seal type air filter for the urea tank, the height of the second end of the bent pipe is higher than that of the first end. Therefore, the phenomenon that the siphon phenomenon is generated when the elbow discharges liquid outwards to discharge all the liquid in the liquid collecting cup so as to prevent the liquid sealing function of the liquid sealing and collecting cup from being lost can be avoided.
In the liquid seal type urea tank air filter, the bent pipe is fixed outside the liquid seal type liquid collecting cup through the bent pipe cover plate, the first end of the bent pipe is communicated with the inner cavity of the liquid seal type liquid collecting cup through the bent pipe connector arranged at the bottom of the liquid seal type liquid collecting cup, two bending sections bent in the up-and-down direction of 180 degrees are arranged between the first end and the second end of the bent pipe, and a vertical transparent section is arranged between the two bending sections. The transparency section can be used for observing the liquid level height in the liquid collecting cup, and after a filling port of the urea tank is opened, whether the filter element is blocked or not can be judged through the liquid level height change of the transparency section of the bent pipe.
Among the above-mentioned liquid seal formula urea tank air cleaner, have on the liquid seal formula collection liquid cup and hold the sunken of return bend apron, the return bend apron inlays the dress through the fastener and fixes in sunken, be provided with the pressure pipe box that holds a bending section and transparent section of return bend on the return bend apron, be provided with the liquid level window that is used for observing the bending section of return bend in the pressure pipe box.
In the above-mentioned liquid seal formula urea tank air cleaner, liquid seal formula liquid collecting cup is provided with the orifice plate of separating into epicoele and cavity of resorption with liquid seal formula liquid collecting cup inner chamber, be provided with the gas pocket of intercommunication epicoele and cavity of resorption on the orifice plate just the position height of orifice plate is less than the position height of urea tank connector.
In the above-mentioned liquid seal formula urea tank air cleaner, liquid seal formula urea tank air cleaner still includes the mount, the mount include the support and with support fixed connection's collar, filter core seat and liquid seal formula collection liquid cup screw-thread fit are connected, the upper portion fixed mounting of liquid seal formula collection liquid cup in the collar.
Compared with the prior art, the liquid seal type urea tank air filter can automatically collect residual liquid and automatic liquid drainage when in use, and can effectively avoid the air filter core from being blocked by urea crystals by gas-liquid separation; the structure is simple, the assembly and disassembly are convenient, and the observation and the maintenance are convenient; even if the air filter element is blocked, impurities can be filtered by water washing when air suction is guaranteed, and whether the air filter element is blocked or not can be judged by external observation.
Drawings
FIG. 1 is a schematic diagram of a liquid-sealed urea tank air cleaner.
FIG. 2 is an exploded view of a liquid-sealed urea tank air cleaner.
FIG. 3 is a schematic sectional view of a liquid-sealed urea tank air cleaner.
Fig. 4 is a schematic view of the structure of the air cleaner.
Fig. 5 is a schematic structural view of a filter element seat of the air cleaner.
Fig. 6 is a schematic structural view of an elbow of the air cleaner.
FIG. 7 is a schematic view of the elbow cover plate of the air cleaner.
FIG. 8 is a schematic view of the installation structure of the liquid-sealed urea tank air cleaner.
Detailed Description
The following description of the embodiments refers to the accompanying drawings.
As shown in fig. 1, the liquid-sealed urea tank air cleaner includes an air cleaner, a liquid-sealed liquid collecting cup, and a fixing frame as shown in fig. 1.
As shown in fig. 2, 3, 4 and 5, the air cleaner is mainly composed of a filter element base 14, a filter element cover 12 and a filter element 13. The filter element cover 12 is fixed on the filter element seat 14 in an inverted buckling manner, the filter element cover 12 and the filter element seat 14 form a filter element containing cavity, and the filter element 13 divides the filter element containing cavity into an inner cavity and an outer cavity. As shown in fig. 4 and 5, the main body of the filter element seat 14 is a bottom plate, a filter element cover mounting post 141 extending upward is provided in the middle of the bottom plate, a thread is provided on the top end of the filter element cover mounting post 141, a mounting hole is provided in the middle of the filter element cover 12, and the top end of the filter element cover mounting post 14 is engaged with the nut 11 after penetrating through the hole in the middle of the filter element cover 12, so as to fixedly connect the filter element cover 12 with the filter element seat 14. The filter element cover 12 also fixes the filter element 13 on the filter element seat.
As shown in fig. 4 and 5, an annular retainer ring 142 is disposed on the bottom plate of the filter element seat, the annular retainer ring 142 is located on the inner side of the lower edge of the side wall of the filter element cover 12, and a ventilation gap communicating the outside of the filter element cover and the filter element cavity is formed between the annular retainer ring 142 and the side wall of the filter element cover. The filter element seat is provided with a plurality of bosses 143 surrounding the filter element seat and evenly distributed at the center at intervals outside the annular retainer ring, and the lower end of the filter element cover 12 is placed on the bosses 143, so that a gap A communicated with the outside and the outside gap of the annular retainer ring is formed below the filter element cover 12, and the outside of the filter element cover 12 is communicated with the filter element accommodating cavity. The annular retainer 142 on the cartridge seat 14 can block external rain water from entering the cartridge receiving cavity.
The bottom plate of the filter element seat 14 is provided with a vent hole 144, the vent hole 144 is positioned in the middle of the bottom plate, the baffle plate 15 is fixed below the bottom plate of the filter element seat 14 through the nut cover 16, the vent hole 144 on the filter element seat 14 is positioned right above the baffle plate 15, and a gap for communicating the vent hole 144 with the space below the baffle plate 15 is arranged between the baffle plate 15 and the bottom plate of the filter element seat 14. The baffle 15 can block the liquid drops splashed upwards in the liquid collecting cup, so that the liquid drops in the liquid collecting cup are prevented from entering the inner cavity through the vent hole in the filter element seat and being adhered to the filter element.
The liquid collecting cup 3 is cup-shaped, a thread is arranged at an opening at the upper part of the liquid collecting cup and is used for being connected with the filter element seat 14, a urea tank connecting port B for being connected with a urea tank is arranged at the upper part of the cup wall of the liquid collecting cup, and the height of the urea tank connecting port B is lower than that of the baffle 15. The upper part of the inner cavity of the liquid collecting cup 3 is provided with a pore plate 32, the pore plate divides the inner cavity of the liquid-sealed liquid collecting cup into an upper cavity and a lower cavity, the pore plate 32 is provided with a pore communicating the upper cavity and the lower cavity at the upper side and the lower side of the pore plate, and the height of the pore plate 32 is lower than that of the urea tank connecting port B. The orifice plate is used for preventing the liquid in the liquid collecting cup from being shaken to largely splash.
The bottom of the liquid collecting cup 3 is provided with an elbow joint 33, the elbow 33 is positioned outside the liquid collecting cup, and the first end 331 of the elbow 33 is connected with the elbow joint C at the bottom of the liquid collecting cup. As shown in fig. 6, the bent tube 33 has two bending sections bent in the up-and-down direction of 180 degrees between the first end 331 and the second end 332, i.e., a first bending section E and a second bending section F, respectively, and a vertical transparent section 333 between the two bending sections. The transparency section 333 can be used for observing the liquid level in the liquid collecting cup, and after the filling port of the urea tank is opened, whether the filter element is blocked or not can be judged through the change of the liquid level of the transparency section of the bent pipe. The height of the elbow 33 at any point is not higher than the urea tank connection port B, i.e. the height of the first bend section of the elbow 3 is also lower than the urea tank connection port B, so as to ensure that the liquid in the collecting cup does not overflow the urea tank connection port. The height of the second end 332 of the elbow 33 is not the lowest position of the elbow 33, and the height of the second end 332 is higher than the height of the first bending section E, so that the phenomenon that the elbow 33 siphons when discharging liquid outwards to discharge all the liquid in the liquid collecting cup can be avoided, and the liquid sealing function of the liquid sealing and collecting cup is lost. However, in order to keep a certain amount of liquid in the liquid collecting cup 3, the second end 332 of the elbow 33 is preferably positioned higher than the elbow joint C at the bottom of the liquid collecting cup.
In order to fix the elbow 33, an elbow cover plate 34 is fixed on the liquid collecting cup 3, a recess for accommodating the elbow cover plate is arranged on the liquid collecting cup 3, the elbow cover plate 34 is embedded and fixed in the recess through a fastener such as a screw 35, a pressure pipe groove 341 for accommodating a bending section and a transparent section of the elbow is arranged on the elbow cover plate 34, and a liquid level window 342 for observing the bending section of the elbow is arranged in the pressure pipe groove 341.
The fixing frame 2 comprises a bracket 21 and a mounting ring 24 fixedly connected with the bracket, and the upper part of the liquid-sealed liquid collecting cup 3 is fixedly arranged in the mounting ring 24. As shown in fig. 2, the bracket 21 is fixed to the spacer 22 by a bolt 23, the bracket 21 is provided with a stud, and the mounting ring 24 is fixed to the bracket 21 by a nut 25 and a spacer 26. As shown in fig. 8, when the urea tank air cleaner is mounted, the bracket 21 is fixed to the construction machine by the bolt 23 and the gasket 22, and the urea tank connection port is connected to the urea tank 5 by the hose 4.
In this embodiment, when the air cleaner is used normally, air in the urea tank is communicated with the outside through the urea tank connection port on the upper portion of the liquid collection cup, the vent hole on the filter element seat, the filter element and other components, or external air enters the urea tank through these components, so that the air pressure in the urea tank is balanced with the outside, the airflow inlet route G of the external air through the air cleaner is shown in fig. 4, and the airflow outlet route of the air in the urea tank through the air cleaner is opposite to the airflow inlet route G; when the filter core was blockked up, when the atmospheric pressure was less than outside atmospheric pressure and need breathe in the urea jar, outside air then gets into behind the liquid seal formula collection liquid cup through the return bend and gets into the urea jar through the urea jar connector, realizes that the external atmospheric pressure is balanced in the urea jar, and the air that gets into through the return bend is by the washing of liquid seal formula collection liquid cup interior liquid seal water, can filter most impurity, reaches clean air's mesh. If the urea liquid in the urea tank overflows and enters the liquid collecting cup through the urea tank connecting port, when the liquid level of the liquid collecting cup exceeds a certain height, the urea liquid overflows through the bent pipe and cannot overflow through the filter element, and the urea liquid is prevented from crystallizing on the filter element.
Claims (10)
1. A liquid-sealed urea tank air filter is characterized by comprising an air filter and a liquid-sealed liquid collecting cup;
the air filter comprises a filter element seat, a filter element cover which is fixed on the filter element seat in an inverted manner, and a filter element arranged in a filter element containing cavity formed by the filter element seat and the filter element cover, wherein the filter element divides the filter element containing cavity into an inner cavity and an outer cavity, and the outer cavity is communicated with the outside of the filter element cover;
the filter element seat is hermetically arranged at the upper port part of the liquid-sealed liquid collecting cup, and is provided with a vent hole for communicating the inner cavity with the upper space of the liquid-sealed liquid collecting cup; a urea tank connecting port used for being connected with the urea tank is arranged on the upper part of the cup wall of the liquid-sealed liquid collecting cup; the liquid-sealed liquid collection cup is provided with a bent pipe, the first end of the bent pipe is communicated with the bottom of the inner cavity of the liquid-sealed liquid collection cup, the second end of the bent pipe is communicated with the outside of the liquid-sealed liquid collection cup, the height of any position of the inner hole of the bent pipe is lower than the height of the position of the urea tank connecting port, and the height of at least one section of the inner hole of the bent pipe is higher than the height of the position of the first.
2. The liquid-sealed urea tank air cleaner as recited in claim 1, wherein said filter element seat has an upwardly extending filter element cover mounting post at a middle portion thereof, and a top end of said filter element cover mounting post is fixedly connected to said filter element cover.
3. The liquid-sealed urea tank air cleaner as recited in claim 1, wherein said filter element seat is provided with an annular retainer ring, said annular retainer ring is located inside a lower edge of a side wall of said filter element cover, and a ventilation gap is provided between said annular retainer ring and said side wall of said filter element cover for communicating an outside of said filter element cover with said filter element cavity.
4. The liquid-sealed urea tank air cleaner as recited in claim 3, wherein said filter element seat is provided with a plurality of bosses spaced uniformly around the center of said filter element seat outside said annular retainer ring, and the lower end of said filter element cover is placed on said bosses.
5. The liquid-sealed urea tank air filter as claimed in claim 1, further comprising a baffle plate, wherein the baffle plate is higher than the connection port of the urea tank, the vent hole of the filter element seat is arranged in the middle of the bottom plate of the filter element seat, the baffle plate is fixed below the bottom plate of the filter element seat, the vent hole of the filter element seat is positioned right above the baffle plate, and a gap for communicating the vent hole with the upper space of the liquid-sealed liquid collecting cup is formed between the baffle plate and the bottom plate of the filter element seat.
6. The liquid-sealed urea tank air cleaner as defined in claim 5, wherein the second end of the elbow is positioned at a higher elevation than the first end.
7. The liquid seal type urea tank air filter as claimed in any one of claims 1 to 6, wherein the elbow is fixed outside the liquid seal type liquid collecting cup through an elbow cover plate, a first end of the elbow is communicated with an inner cavity of the liquid seal type liquid collecting cup through an elbow connector arranged at the bottom of the liquid seal type liquid collecting cup, two sections of bending sections bent in the up-and-down direction of 180 degrees are arranged between the first end and the second end of the elbow, and a vertical transparent section is arranged between the two sections of bending sections.
8. The liquid-sealed urea tank air cleaner as claimed in claim 7, wherein the liquid-sealed liquid collecting cup has a recess for receiving the cover plate of the elbow, the cover plate of the elbow is fixed in the recess by a fastener, the cover plate of the elbow is provided with a pipe pressing groove for receiving a bending section and a transparent section of the elbow, and the pipe pressing groove is provided with a liquid level window for observing the bending section of the elbow.
9. The liquid-sealed urea tank air filter as claimed in any one of claims 1 to 6, wherein the liquid-sealed liquid collecting cup is provided with a pore plate which divides an inner cavity of the liquid-sealed liquid collecting cup into an upper cavity and a lower cavity, the pore plate is provided with an air hole which communicates the upper cavity and the lower cavity, and the position of the pore plate is lower than that of the urea tank connecting port.
10. The liquid seal type urea tank air filter as claimed in any one of claims 1 to 6, further comprising a fixing frame, wherein the fixing frame comprises a bracket and a mounting ring fixedly connected with the bracket, the filter element seat is in threaded fit connection with the liquid seal type liquid collecting cup, and the upper part of the liquid seal type liquid collecting cup is fixedly mounted in the mounting ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020810192.3U CN212337410U (en) | 2020-05-15 | 2020-05-15 | Liquid-sealed urea tank air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020810192.3U CN212337410U (en) | 2020-05-15 | 2020-05-15 | Liquid-sealed urea tank air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212337410U true CN212337410U (en) | 2021-01-12 |
Family
ID=74082408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020810192.3U Active CN212337410U (en) | 2020-05-15 | 2020-05-15 | Liquid-sealed urea tank air filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212337410U (en) |
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2020
- 2020-05-15 CN CN202020810192.3U patent/CN212337410U/en active Active
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