Multiple filtering device for urea base solution

Abstract

The utility model relates to the technical field of urea production, in particular to a urea base liquid multiple filtering device which comprises a filtering bin, a first filtering assembly movably arranged in the filtering bin, a second filtering assembly movably arranged in the filtering bin and a fixing assembly, and the center of the lower end of the filtering bin is fixedly communicated with a water inlet pipe. The fixing assembly is movably arranged above the filtering bin, and the motor is installed above the fixing assembly and used for driving the filtering cylinder and the hollow filtering frame to rotate. According to the urea solution filtering device, impurities in a urea solution are filtered through the first filtering assembly, the filtered impurities are collected at the same time, then various substances in the urea solution are adsorbed and filtered through the second filtering assembly, activated carbon and the filtering cylinder are driven by the motor to rotate oppositely, and under the action of centrifugal force, the impurities in the urea solution are filtered out. The speed that the urea solution passes through the activated carbon is accelerated, and the filtering effect is kept, so that the production speed of the urea for the vehicle is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of urea production, in particular to a urea-based liquid multiple filtering device. Background Art

[0002] The raw materials for the production of automotive urea are ordinary urea and ultrapure water. However, during the production and packaging process, ordinary urea will inevitably introduce impurities such as metal ions, aldehydes, insoluble matter, and biuret. These impurities will not only cause the deactivation of the SCR system catalyst, but also clog the pipeline. Therefore, the urea needs to be filtered and activated carbon is used to adsorb the various substances inside it.

[0003] During the production of existing automotive urea, impurity filtration and activated carbon adsorption are usually carried out inside two filtering devices. The equipment occupies a large area, and it is not convenient to uniformly collect and remove impurities from the filter cartridge during impurity filtration. The filtering effect of the filter cartridge is easily reduced. Moreover, during the activated carbon adsorption filtration, the solution only flows through the activated carbon, which reduces the precipitation rate of the solution, resulting in a reduction in the production rate of automotive urea. Utility Model Content

[0004] The purpose of the present utility model is to provide a urea-based liquid multiple filtering device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A urea-based liquid multiple filtration device, comprising:

[0007] A filter chamber, wherein the center of the lower end of the filter chamber is fixedly connected to a water inlet pipe;

[0008] A first filter assembly is movably disposed inside the filter bin, the first filter assembly comprising a filter cartridge rotatably connected to the filter bin, and a hopper is movably disposed inside the filter cartridge;

[0009] A second filter assembly is movably disposed inside the filter chamber, comprising a hollow filter frame rotatably connected between the filter cartridge and the filter chamber, the interior of the hollow filter frame being filled with activated carbon, and a plurality of baffles being fixedly mounted at equal angles on the inner surface of the hollow filter frame;

[0010] A fixed component, movably arranged above the filter chamber;

[0011] The motor is installed above the fixed assembly and is used to drive the filter cartridge and the hollow filter frame to rotate.

[0012] Furthermore, a drain pipe is fixedly connected to the lower end of the outer surface of the filter bin, and two hoops for limiting the positions of the filter cartridge and the hollow filter frame are fixedly installed on the lower inner surface of the filter bin.

[0013] Furthermore, the fixing assembly includes:

[0014] A first fixing ring, movably arranged above the filter cartridge;

[0015] A second fixing ring, fixedly mounted on the outer surface of the first fixing ring;

[0016] A plurality of rollers are connected to the upper surfaces of the first and second fixing rings, rotating at equal angles;

[0017] Multiple threaded rings are fixedly installed at equal angles at the connection between the No. 1 fixing ring and the No. 2 fixing ring.

[0018] Preferably: a plurality of No. 1 support rings are fixedly installed at equal angles on the upper end of the filter bin, a screw rod is movably inserted into the No. 1 support ring, the screw rod passes through the No. 1 support ring and is screwed together with the threaded ring, and a stop rod is fixedly installed on the outer surface of the screw rod.

[0019] Preferably: a plurality of scrapers are fixedly installed at equal angles on the outer ring of the upper end of the hopper, a conical cover is fixedly installed on the inner ring of the upper end of the hopper, a pull rod is fixedly installed in the middle of the hopper, a No. 2 support ring is fixedly installed at the connection between the No. 1 fixing ring and the No. 2 fixing ring, and a limit rod that passes through the pull rod is movably inserted inside the No. 2 support ring.

[0020] Furthermore, a No. 1 stepped ring is fixedly installed on the upper end of the filter cartridge, a No. 1 gear ring is fixedly installed on the upper end of the No. 1 stepped ring, a No. 2 stepped ring is fixedly installed on the upper end surface of the hollow filter frame, and a No. 2 gear ring is fixedly installed on the upper end surface of the No. 2 stepped ring.

[0021] Preferably, a gear is fixedly mounted on the output end of the motor, and the gear is meshed and transmission-connected with the first ring gear and the second ring gear respectively.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The motor is operated to rotate the filter cartridge and the hollow filter frame in opposite directions. Under the action of centrifugal force, the urea solution is thrown out from the filter cartridge. Then, the baffle cooperates to intercept the thrown-out urea solution, allowing the urea solution to pass through the hollow filter frame and activated carbon for multiple filtration. At the same time, under the action of centrifugal force, the solution quickly passes through the activated carbon, thereby filtering the impurities in the urea solution through the No. 1 filter component, and adsorbing and filtering various substances in the urea solution through the No. 2 filter component. Under the action of centrifugal force, the speed of the urea solution passing through the activated carbon is accelerated, and the filtering effect is maintained, thereby accelerating the production speed of automotive urea.

[0024] 2. Pull the limit rod to separate it from the pull rod. At this time, the filter cartridge continues to rotate. Pull the pull rod upward, and the scraper scrapes the inside of the filter cartridge to scrape off the impurities and crystals on its inner wall. Then the solution passes through the hopper, and the impurities and crystals are collected inside the hopper, thereby collecting the impurities and crystals in a unified manner.

[0025] 3. Fix the No. 1 and No. 2 fixing rings by tightening the screw and the threaded ring. At this time, the push rod presses against the No. 2 stepped ring, further limiting the position of the hollow filter frame and improving its stability. Conversely, the screw and the threaded ring are separated, and the hollow filter frame is pulled upward to replace the activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the overall vertical section split structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the overall vertical cross-sectional structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0030] Figure 5 This is a schematic diagram of the vertical cross-section structure of the hopper in the utility model;

[0031] Figure 6 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0032] In the figure: 1. Filter chamber; 101. Water inlet pipe; 102. Drain pipe; 103. Hoop; 104. Support ring No. 1; 105. Screw; 106. Push rod; 2. Filter assembly No. 1; 201. Filter cartridge; 202. Step ring No. 1; 203. Gear ring No. 1; 204. Hopper; 205. Pull rod; 206. Conical cover; 207. Scraper; 3. Filter assembly No. 2; 301. Hollow filter frame; 302. Step ring No. 2; 303. Gear ring No. 2; 304. Baffle; 4. Fixing assembly; 401. Fixing ring No. 1; 402. Fixing ring No. 2; 403. Roller; 404. Threaded ring; 405. Support ring No. 2; 406. Limit rod; 5. Motor; 501. Gear. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-6 In an embodiment of the present invention, a urea-based liquid multiple filtering device includes a filter bin 1, a water inlet pipe 101 is fixedly connected at the center of the lower end of the filter bin 1, a No. 1 filter component 2, which is movably arranged inside the filter bin 1, the No. 1 filter component 2 includes a filter cartridge 201 rotatably connected to the inside of the filter bin 1, a hopper 204 is movably provided inside the filter cartridge 201, a No. 2 filter component 3 is movably arranged inside the filter bin 1, the No. 2 filter component 3 includes a hollow filter frame 301 rotatably connected between the filter cartridge 201 and the filter bin 1, the hollow filter frame 301 is filled with activated carbon, and a plurality of baffles 304 are fixedly installed at equal angles on the inner surface of the hollow filter frame 301, a fixed component 4 is movably arranged above the filter bin 1, and a motor 5 is installed above the fixed component 4 for driving the filter cartridge 201 and the hollow filter frame 301 to rotate.

[0035] Specifically, the first filter component 2 filters the impurities and residual crystals in the urea solution, and then the urea solution enters between the filter cartridge 201 and the hollow filter frame 301, passes through the hollow filter frame 301 under the action of centrifugal force, is adsorbed and filtered by the activated carbon inside the hollow filter frame 301, and is finally discharged.

[0036] Example 1

[0037] like Figure 2 、 Figure 3 and Figure 6 As shown, in this embodiment, the fixing assembly 4 includes: a No. 1 fixing ring 401 is movably arranged above the filter cartridge 201, a No. 2 fixing ring 402 is fixedly installed on the outer surface of the No. 1 fixing ring 401, a plurality of rollers 403 are rotatably connected to the upper surfaces of the No. 1 fixing ring 401 and the No. 2 fixing ring 402 at equal angles, and a plurality of threaded rings 404 are fixedly installed at the connection between the No. 1 fixing ring 401 and the No. 2 fixing ring 402 at equal angles; a No. 1 stepped ring 202 is fixedly installed on the upper end of the filter cartridge 201, a No. 1 gear ring 203 is fixedly installed on the upper end of the No. 1 stepped ring 202, a No. 2 stepped ring 302 is fixedly installed on the upper end surface of the hollow filter frame 301, and a No. 2 gear ring 303 is fixedly installed on the upper end surface of the No. 2 stepped ring 302; a gear 501 is fixedly installed on the output end of the motor 5, and the gear 501 is meshed and transmission-connected with the No. 1 gear ring 203 and the No. 2 gear ring 303 respectively.

[0038] In this embodiment, the No. 1 stepped ring 202 is clamped on the No. 1 fixed ring 401 from the inside and fits with the roller 403, and the No. 2 stepped ring 302 is clamped on the No. 2 fixed ring 402 from the outside and fits with the roller 403, which defines the position of the filter cartridge 201 and the hollow filter frame 301. The motor 5 runs, driving the gear 501 to rotate, and the gear 501 is engaged with the No. 1 ring gear 203 and the No. 2 ring gear 303 to drive the filter cartridge 201 and the hollow filter frame 301 to rotate in opposite directions, and the urea solution is discharged from the filter cartridge 201 under the action of centrifugal force. The urea solution is thrown out from the filter cartridge 201, and then the baffle 304 cooperates to intercept the thrown-out urea solution, so that the urea solution passes through the hollow filter frame 301 and the activated carbon for multiple filtration. At the same time, under the action of centrifugal force, the solution quickly passes through the activated carbon, thereby filtering impurities in the urea solution through the No. 1 filter component 2, and adsorbing and filtering various substances in the urea solution through the No. 2 filter component 3. Under the action of centrifugal force, the speed of the urea solution passing through the activated carbon is accelerated, and the filtering effect is maintained, thereby accelerating the production speed of automotive urea.

[0039] like Figure 1 and Figure 5 As shown, in this embodiment, a plurality of scrapers 207 are fixedly installed at equal angles on the outer ring of the upper end of the hopper 204, a conical cover 206 is fixedly installed on the inner ring of the upper end of the hopper 204, a pull rod 205 is fixedly installed in the middle of the hopper 204, a No. 2 support ring 405 is fixedly installed at the connection between the No. 1 fixing ring 401 and the No. 2 fixing ring 402, and a limiting rod 406 that passes through the pull rod 205 is movably inserted inside the No. 2 support ring 405.

[0040] During specific implementation, the hopper 204 has a mesh structure to facilitate the passage of the solution. When there are a lot of impurities and crystals inside the filter cartridge 201, the limit rod 406 is pulled to separate it from the pull rod 205. At this time, the filter cartridge 201 continues to rotate, and the pull rod 205 is pulled upward. The scraper 207 scrapes the inside of the filter cartridge 201 to scrape off the impurities and crystals on its inner wall. Then the solution passes through the hopper 204, and the impurities and crystals are collected inside the hopper 204. The conical cover 206 blocks the impurities and crystals from above to prevent them from moving out of the hopper 204 in large quantities under the drive of the water flow, thereby collecting the impurities and crystals in a unified manner.

[0041] like Figure 3 As shown, in this embodiment, a drain pipe 102 is fixedly connected to the lower end of the outer surface of the filter bin 1, and two hoops 103 for limiting the position of the filter cartridge 201 and the hollow filter frame 301 are fixedly installed on the lower surface of the inner part of the filter bin 1.

[0042] In a specific implementation, the hoop 103 is located at the lower outer side of the filter cartridge 201 and the hollow filter frame 301, slidingly fitting with the two, limiting the position of the two during rotation and improving their stability during rotation.

[0043] Example 2

[0044] On the basis of the first embodiment, in order to compensate for the problem of poor meshing stability between the gear 501 and the first ring gear 203 and the second ring gear 303 .

[0045] like Figure 3 and Figure 6 As shown, in this embodiment, a plurality of No. 1 support rings 104 are fixedly installed at equal angles on the upper end of the filter chamber 1, a screw 105 is movably inserted into the No. 1 support ring 104, the screw 105 passes through the No. 1 support ring 104 and is screwed together with the threaded ring 404, and a support rod 106 is fixedly installed on the outer surface of the screw 105.

[0046] During specific implementation, the No. 1 fixing ring 401 and the No. 2 fixing ring 402 are fixed by screwing and tightening the screw 105 and the threaded ring 404. At this time, the support rod 106 presses against the No. 2 step ring 302, further limiting the position of the hollow filter frame 301 and improving its stability. Conversely, the screw 105 is separated from the threaded ring 404, pulling the hollow filter frame 301 upward to replace the activated carbon.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A urea-based liquid multiple filtration device, characterized in that: include: A filter chamber (1), wherein the center of the lower end of the filter chamber (1) is fixedly connected to a water inlet pipe (101); A first filter assembly (2) is movably arranged inside the filter chamber (1), the first filter assembly (2) comprising a filter cartridge (201) rotatably connected to the inside of the filter chamber (1), and a hopper (204) is movably provided inside the filter cartridge (201); A second filter assembly (3) is movably arranged inside the filter chamber (1), the second filter assembly (3) comprising a hollow filter frame (301) rotatably connected between the filter cartridge (201) and the filter chamber (1), the interior of the hollow filter frame (301) being filled with activated carbon, and a plurality of baffles (304) being fixedly mounted at equal angles on the inner surface of the hollow filter frame (301); A fixed component (4) is movably arranged above the filter chamber (1); The motor (5) is installed above the fixing assembly (4) and is used to drive the filter cartridge (201) and the hollow filter frame (301) to rotate.

2. The urea-based liquid multiple filtration device according to claim 1, characterized in that: A drainage pipe (102) is fixedly connected to the lower end of the outer surface of the filter bin (1), and two hoops (103) for limiting the positions of the filter cartridge (201) and the hollow filter frame (301) are fixedly installed on the lower inner surface of the filter bin (1).

3. The urea-based liquid multi-filtration device according to claim 1, characterized in that: The fixing assembly (4) comprises: A first fixing ring (401) is movably arranged above the filter cartridge (201); A second fixing ring (402) is fixedly mounted on the outer surface of the first fixing ring (401); A plurality of rollers (403) are rotatably connected to the upper surfaces of the first fixing ring (401) and the second fixing ring (402) at equal angles; A plurality of threaded rings (404) are fixedly installed at equal angles at the connection between the first fixing ring (401) and the second fixing ring (402).

4. The urea-based liquid multi-filtration device according to claim 3, characterized in that: A plurality of No. 1 support rings (104) are fixedly mounted at equal angles on the upper end of the filter bin (1); a screw rod (105) is movably inserted into the interior of the No. 1 support ring (104); the screw rod (105) passes through the No. 1 support ring (104) and is screwed together with the threaded ring (404); and a stop rod (106) is fixedly mounted on the outer surface of the screw rod (105).

5. The urea-based liquid multiple filtration device according to claim 3, characterized in that: A plurality of scrapers (207) are fixedly installed at equal angles on the outer ring of the upper end of the hopper (204), a conical cover (206) is fixedly installed on the inner ring of the upper end of the hopper (204), a pull rod (205) is fixedly installed in the middle of the hopper (204), a second support ring (405) is fixedly installed at the connection between the first fixing ring (401) and the second fixing ring (402), and a limiting rod (406) that penetrates the pull rod (205) is movably inserted inside the second support ring (405).

6. The urea-based liquid multiple filtration device according to claim 1, characterized in that: A No. 1 stepped ring (202) is fixedly mounted on the upper end of the filter cartridge (201), a No. 1 gear ring (203) is fixedly mounted on the upper end of the No. 1 stepped ring (202), a No. 2 stepped ring (302) is fixedly mounted on the upper end surface of the hollow filter frame (301), and a No. 2 gear ring (303) is fixedly mounted on the upper end surface of the No. 2 stepped ring (302).

7. The urea-based liquid multiple filtration device according to claim 6, characterized in that: A gear (501) is fixedly mounted on the output end of the motor (5), and the gear (501) is respectively meshed and transmission-connected with the first ring gear (203) and the second ring gear (303).

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