Filtering device for producing urea solution for vehicles

Abstract

The utility model provides a filtering device for producing an adblue solution, which relates to the technical field of adblue solution production and comprises a filtering box, and supporting legs are fixedly connected to four corners of the bottom of the filtering box. According to the utility model, the control terminal controls the liquid inlet pipe to be closed, when the liquid flow velocity sensor detects that the liquid flow velocity is zero, the control terminal closes the electronic control valve III and opens the electronic control valve IV and the electronic control valve II, and water flows out from the water inlet pipe to wash impurities filtered from the outer surface of the cylindrical filter screen; due to the design, the frequency of manually cleaning the cylindrical filter screen is reduced; the control terminal closes the first electric control valve, the second electric control valve, the third electric control valve and the fourth electric control valve, a worker rotates the liquid outlet pipe to take down the liquid outlet pipe, rotates the internal thread cover to take down the internal thread cover, pulls out the cylindrical filter screen, manually cleans the cylindrical filter screen, and after cleaning is completed, reverse operation can be conducted to install the cylindrical filter screen. By means of the design, workers can disassemble and assemble the cylindrical filter screen conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle urea solution production, in particular to a filtering device for vehicle urea solution production. Background Technique

[0002] Vehicle urea is applicable to cars, trucks and buses equipped with SCR systems, and vehicles using diesel engines on roads. It is a consumable that must be used in SCR technology. Together with the SCR catalyst, it converts harmful nitrogen oxides emitted by diesel engines into harmless water vapor and nitrogen. The production of vehicle urea is mainly purified from industrial urea. The main principle is that at a temperature of 70-75°C, urea hydrolyzes in an aqueous solution, and when the temperature is below 30°C, urea recrystallizes from the aqueous solution again, and after dehydration treatment, vehicle urea is obtained, and filtration is required to remove impurities therein.

[0003] However, in the prior art, it is found that during the filtration of vehicle urea solution using a filtering device for vehicle urea solution production, the frequency of manual cleaning of the filter screen of some filtering devices for vehicle urea solution production is relatively high, and at the same time, it is not convenient for the disassembly and installation of the filter screen. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a filtering device for vehicle urea solution production, including: a filtering box, four corners of the bottom of the filtering box are fixedly connected with supporting legs, one side of one of the supporting legs is fixedly connected with a control terminal, the top of the filtering box is fixedly embedded with a liquid inlet pipe, the inside of the liquid inlet pipe communicates with the inner cavity of the filtering box, an electric control valve I is arranged on the surface of the liquid inlet pipe, one side of the bottom of the filtering box is fixedly embedded with a waste water outlet pipe, the inside of the waste water outlet pipe communicates with the inner cavity of the filtering box, an electric control valve II is arranged on the surface of the waste water outlet pipe, a filtering component is arranged inside the filtering box, and a liquid outlet pipe component is arranged at the bottom of the filtering component.

[0006] As a preferred implementation manner, the filtering component includes a supporting cylinder, a plurality of through holes are formed on the surface of the supporting cylinder, a cylindrical filter screen groove is formed by extending downward through the inner side wall of the supporting cylinder, the cylindrical filter screen groove communicates with the inside of the plurality of through holes, sealing rubber rings are fixedly connected to both sides inside the cylindrical filter screen groove, a cylindrical filter screen is movably embedded inside the cylindrical filter screen groove, the surfaces of both sides of the cylindrical filter screen are closely attached to the surfaces of the two sealing rubber rings, and the surface of the bottom of the supporting cylinder is fixedly embedded at the bottom of the filtering box.

[0007] As a preferred embodiment, an externally threaded pipe is fixedly connected to the bottom of the support cylinder. An internally threaded cover is sleeved on the surface of the externally threaded pipe in a threaded manner. A sealing gasket is fixedly connected to the inner surface of the internally threaded cover. The other surface of the sealing gasket is in close contact with the bottom of the externally threaded pipe, the cylindrical filter screen, and the support cylinder.

[0008] As a preferred embodiment, the liquid outlet pipe assembly includes an internally threaded connecting pipe. A liquid flow rate sensor is fixedly connected to the inner surface of the internally threaded connecting pipe. A liquid outlet pipe is threadedly embedded in the interior of the internally threaded connecting pipe.

[0009] As a preferred embodiment, an electric control valve three is arranged on the surface of the liquid outlet pipe. A water inlet pipe is fixedly embedded on one side of the liquid outlet pipe. An electric control valve four is arranged on the surface of the water inlet pipe. The horizontal position of the water inlet pipe is above the electric control valve three.

[0010] As a preferred embodiment, the interior of the internally threaded cover is movably sleeved on the surface of the internally threaded connecting pipe.

[0011] As a preferred embodiment, the top surface of the internally threaded connecting pipe is fixedly embedded in the bottom of the inner cavity of the support cylinder.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. For this utility model, connect the liquid inlet pipe on this device to the vehicle urea solution input pipe, the waste liquid outlet pipe to the waste water pipe, and the water inlet pipe to the water delivery pipe and connect it to an external power supply device. The external power supply device is electrically connected to the control terminal, the first electric control valve, the second electric control valve, the liquid flow rate sensor, the third electric control valve, and the fourth electric control valve to provide power. The control terminal is electrically connected to the first electric control valve, the second electric control valve, the third electric control valve, and the fourth electric control valve for associated control. The liquid flow rate sensor can transmit the detected liquid flow rate information inside the internally threaded connecting pipe to the control terminal in real time. In the initial state, the first electric control valve, the second electric control valve, the third electric control valve, and the fourth electric control valve are all in the closed state. By opening the first electric control valve and the third electric control valve, the filtration of the vehicle urea solution is started. The urea solution flows from the liquid inlet pipe into the inner cavity of the filtration box and flows out from the liquid outlet pipe after being filtered by the cylindrical filter screen. Through the control terminal, the backwashing is set, that is, the liquid flow rate detected by the liquid flow rate sensor and the backwashing duration are set. When the liquid flow rate detected by the liquid flow rate sensor reaches the set flow rate, the control terminal controls the liquid inlet pipe to close. When the liquid flow rate detected by the liquid flow rate sensor is zero, the control terminal controls the third electric control valve to close and opens the fourth electric control valve and the second electric control valve. Water flows out from the water inlet pipe, and passes through the liquid outlet pipe, the internally threaded connecting pipe, and the cylindrical filter screen into the inner cavity of the filtration box to wash the impurities filtered on the outer surface of the cylindrical filter screen. The waste water from the washing is discharged from the waste liquid outlet pipe. After reaching the set duration, the control terminal controls the fourth electric control valve and the second electric control valve to close and opens the first electric control valve and the third electric control valve. This design reduces the frequency of manual cleaning of the cylindrical filter screen.

[0014] 2. For this utility model, when manual cleaning of the cylindrical filter screen is required by the worker, the worker can close the first electric control valve, the second electric control valve, the third electric control valve, and the fourth electric control valve through the control terminal. The worker can rotate the liquid outlet pipe and remove it, and then rotate the internally threaded cover and remove it, so that the bottom of the cylindrical filter screen loses the limit of the internally threaded cover, and the cylindrical filter screen can be pulled out from the inside of the cylindrical filter screen slot for manual cleaning of the cylindrical filter screen. After cleaning, the reverse operation can be performed for the installation of the cylindrical filter screen. This design facilitates the disassembly and installation of the cylindrical filter screen by the worker. Description of the Drawings

[0015] Figure 1 It is a general view schematic diagram of a filtration device for vehicle urea solution production provided by this utility model;

[0016] Figure 2 It is a cross-sectional view of a filtration device for vehicle urea solution production provided by this utility model;

[0017] Figure 3 It is a schematic diagram at position A of a filtration device for vehicle urea solution production provided by this utility model;

[0018] Figure 4 Schematic diagram of part B of a filtering device for producing vehicle urea solution provided by the present utility model;

[0019] Figure 5 Exploded view of the connection between the filtering component and the liquid outlet pipe component of a filtering device for producing vehicle urea solution provided by the present utility model;

[0020] Figure 6 Schematic diagram of the cylindrical filter screen of a filtering device for producing vehicle urea solution provided by the present utility model.

[0021] Legend description:

[0022] 1. Filtering box; 101. Support legs; 102. Control terminal; 103. Liquid inlet pipe; 104. Electric control valve I; 105. Waste liquid outlet pipe; 106. Electric control valve II; 2. Filtering component; 201. Support cylinder; 202. Through hole; 203. Cylindrical filter screen groove; 204. Sealing rubber ring; 205. Cylindrical filter screen; 206. External threaded pipe; 207. Internal threaded cover; 208. Sealing gasket; 3. Liquid outlet pipe component; 301. Internal threaded connecting pipe; 302. Liquid flow rate sensor; 303. Liquid outlet pipe; 304. Electric control valve III; 305. Water inlet pipe; 306. Electric control valve IV. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-6 , the present utility model provides a technical solution: a filtering device for producing vehicle urea solution, including: a filtering box 1, support legs 101 are fixedly connected to the four corners of the bottom of the filtering box 1, a control terminal 102 is fixedly connected to one side of one of the support legs 101, a liquid inlet pipe 103 is fixedly embedded in the top of the filtering box 1, the inside of the liquid inlet pipe 103 communicates with the inner cavity of the filtering box 1, an electric control valve I 104 is arranged on the surface of the liquid inlet pipe 103, a waste liquid outlet pipe 105 is fixedly embedded in one side of the bottom of the filtering box 1, the inside of the waste liquid outlet pipe 105 communicates with the inner cavity of the filtering box 1, an electric control valve II 106 is arranged on the surface of the waste liquid outlet pipe 105, a filtering component 2 is arranged inside the filtering box 1, and a liquid outlet pipe component 3 is arranged at the bottom of the filtering component 2.

[0025] Specifically: when the liquid flow rate detected by the liquid flow rate sensor 302 reaches the set flow rate, the control terminal 102 controls the liquid inlet pipe 103 to close. When the liquid flow rate sensor 302 detects that the liquid flow rate is zero, the control terminal 102 controls the closing of the electric control valve three 304 and the opening of the electric control valve four 306 and the electric control valve two 106. Water flows out from the water inlet pipe 305 to wash the impurities filtered on the outer surface of the cylindrical filter screen 205. Such a design reduces the frequency of manual cleaning of the cylindrical filter screen 205. By the control terminal 102 closing the electric control valve one 104, the electric control valve two 106, the electric control valve three 304 and the electric control valve four 306, the worker can remove the liquid outlet pipe 303 by rotating the liquid outlet pipe 303, and remove the internal thread cover 207 by rotating the internal thread cover 207, and then can extract the cylindrical filter screen 205 from the inside of the cylindrical filter screen groove 203 to perform manual cleaning on the cylindrical filter screen 205. After the cleaning is completed, the reverse operation can be performed for the installation of the cylindrical filter screen 205. Such a design facilitates the disassembly and installation of the cylindrical filter screen 205 by the worker.

[0026] In one embodiment, the filter assembly 2 includes a support cylinder 201. A plurality of through holes 202 are formed on the surface of the support cylinder 201. A cylindrical filter screen groove 203 is formed by extending downward through the inner side wall of the support cylinder 201. The cylindrical filter screen groove 203 communicates with the inside of the plurality of through holes 202. Sealing rubber rings 204 are fixedly connected to both sides inside the cylindrical filter screen groove 203. A cylindrical filter screen 205 is movably embedded inside the cylindrical filter screen groove 203. The surfaces on both sides of the cylindrical filter screen 205 are in close contact with the surfaces of the two sealing rubber rings 204. The surface of the bottom of the support cylinder 201 is fixedly embedded in the bottom of the filter box 1.

[0027] Specifically: the surfaces of the sealing rubber ring 204 and the cylindrical filter screen 205 are in close contact, which can prevent the unfiltered vehicle urea solution from flowing in through the gap between the cylindrical filter screen 205 and the cylindrical filter screen groove 203, thereby reducing the filtering effect.

[0028] In one embodiment, an external thread pipe 206 is fixedly connected to the bottom of the support cylinder 201. An internal thread cover 207 is threadedly sleeved on the surface of the external thread pipe 206. A sealing gasket 208 is fixedly connected to the inner surface of the internal thread cover 207. The surface of the other side of the sealing gasket 208 is in close contact with the bottom of the external thread pipe 206, the cylindrical filter screen 205 and the support cylinder 201.

[0029] Specifically: the sealing gasket 208 is in close contact with the bottom of the external thread pipe 206, the cylindrical filter screen 205 and the support cylinder 201, preventing the unfiltered vehicle urea solution from flowing in through the gap between the cylindrical filter screen 205 and the cylindrical filter screen groove 203, thereby reducing the filtering effect.

[0030] In one embodiment, the liquid outlet pipe assembly 3 includes an internal threaded connecting pipe 301 , a liquid flow rate sensor 302 is fixedly connected to the inner surface of the internal threaded connecting pipe 301 , and a liquid outlet pipe 303 is embedded in the internal threads of the internal threaded connecting pipe 301 .

[0031] Specifically: the liquid flow rate sensor 302 can transmit the detected flow rate information of the liquid inside the internal threaded connecting pipe 301 to the control terminal 102 in real time, and the worker sets the backwashing start time through the control terminal 102 according to the data sent back by the liquid flow rate sensor 302.

[0032] In one embodiment, an electrically controlled valve three 304 is provided on the surface of the liquid outlet pipe 303, a water inlet pipe 305 is fixedly embedded on one side of the liquid outlet pipe 303, an electrically controlled valve four 306 is provided on the surface of the water inlet pipe 305, and the water inlet pipe 305 is horizontally located above the electrically controlled valve three 304.

[0033] Specifically: the electric control valve three 304 and the electric control valve four 306 are both existing electrically controllable valves, and their specific structures are not described in detail here.

[0034] In one embodiment, the inner part of the internal thread cover 207 is movably sleeved on the surface of the internal thread connection pipe 301 .

[0035] Specifically, the internal thread cover 207 can be removed from the surface of the internal thread connection pipe 301 by reverse rotation, and the cylindrical filter screen 205 can be drawn out from the inside of the cylindrical filter screen slot 203 without being limited by the internal thread cover 207, so as to facilitate the installation and removal of the cylindrical filter screen 205.

[0036] In one embodiment, the surface of the top of the internal threaded connecting tube 301 is fixedly embedded in the bottom of the inner cavity of the supporting tube 201 .

[0037] Specifically: the internal thread connecting pipe 301 is fixed.

[0038] Working principle: Connect the liquid inlet pipe 103 on this device to the vehicle urea solution input pipe, connect the waste liquid outlet pipe 105 to the waste water pipe, connect the water inlet pipe 305 to the water delivery pipe and connect it to an external power supply device. The external power supply device is electrically connected to the control terminal 102, the electric control valve 1 104, the electric control valve 2 106, the liquid flow rate sensor 302, the electric control valve 3 304 and the electric control valve 4 306 to provide power. The control terminal 102 is electrically connected to the electric control valve 1 104, the electric control valve 2 106, the electric control valve 3 304 and the electric control valve 4 306 for associated control. The liquid flow rate sensor 302 can transmit the detected flow rate information of the liquid inside the internally threaded connecting pipe 301 to the control terminal 102 in real time. In the initial state, the electric control valve 1 104, the electric control valve 2 106, the electric control valve 3 304 and the electric control valve 4 306 are all in the closed state. Open the electric control valve 1 104 and the electric control valve 3 304 to start filtering the vehicle urea solution. The urea solution flows into the inner cavity of the filter box 1 from the liquid inlet pipe 103 and flows out from the liquid outlet pipe 303 after being filtered by the cylindrical filter screen 205. Set the backwashing through the control terminal 102, that is, set the liquid flow rate detected by the liquid flow rate sensor 302 and the backwashing duration. When the liquid flow rate detected by the liquid flow rate sensor 302 reaches the set flow rate, the control terminal 102 controls the liquid inlet pipe 103 to close. When the liquid flow rate sensor 302 detects that the liquid flow rate is zero, the control terminal 102 controls the electric control valve 3 304 to close and opens the electric control valve 4 306 and the electric control valve 2 106. Water flows out from the water inlet pipe 305 and flows into the inner cavity of the filter box 1 through the liquid outlet pipe 303, the internally threaded connecting pipe 301 and the cylindrical filter screen 205 to wash the impurities filtered on the outer surface of the cylindrical filter screen 205. The waste water from the washing is discharged from the waste liquid outlet pipe 105. After reaching the set duration, the control terminal 102 controls the electric control valve 4 306 and the electric control valve 2 106 to close and opens the electric control valve 1 104 and the electric control valve 3 304. This design reduces the frequency of manual cleaning of the cylindrical filter screen 205 by workers. When manual cleaning of the cylindrical filter screen 205 is required by workers, the workers can close the electric control valve 1 104, the electric control valve 2 106, the electric control valve 3 304 and the electric control valve 4 306 through the control terminal 102. The workers can rotate the liquid outlet pipe 303 and remove the liquid outlet pipe 303, and then rotate the internal thread cover 207 and remove the internal thread cover 207, so that the bottom of the cylindrical filter screen 205 loses the limit of the internal thread cover 207, and the cylindrical filter screen 205 can be pulled out from the inside of the cylindrical filter screen groove 203 for manual cleaning of the cylindrical filter screen 205. After cleaning, the reverse operation can be carried out for the installation of the cylindrical filter screen 205. This design facilitates the disassembly and installation of the cylindrical filter screen 205 by workers.

[0039] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A filtering device for the production of vehicle urea solution, characterized in that, Including: A filter box (1), four corners of the bottom of the filter box (1) are fixedly connected with support legs (101), one side of one of the support legs (101) is fixedly connected with a control terminal (102), the top of the filter box (1) is fixedly embedded with a liquid inlet pipe (103), the inside of the liquid inlet pipe (103) is communicated with the inner cavity of the filter box (1), an electric control valve one (104) is arranged on the surface of the liquid inlet pipe (103), one side of the bottom of the filter box (1) is fixedly embedded with a waste water outlet pipe (105), the inside of the waste water outlet pipe (105) is communicated with the inner cavity of the filter box (1), an electric control valve two (106) is arranged on the surface of the waste water outlet pipe (105), a filter component (2) is arranged inside the filter box (1), and an outlet pipe component (3) is arranged at the bottom of the filter component (2).

2. The filtering device for producing vehicle urea solution according to claim 1, wherein: The filter component (2) includes a support cylinder (201), a plurality of through holes (202) are formed in the surface of the support cylinder (201), a cylindrical filter screen groove (203) is formed by extending downward through the inner side wall of the support cylinder (201), the cylindrical filter screen groove (203) is communicated with the inside of the plurality of through holes (202), sealing rubber rings (204) are fixedly connected to both sides inside the cylindrical filter screen groove (203), a cylindrical filter screen (205) is movably embedded inside the cylindrical filter screen groove (203), and the surfaces on both sides of the cylindrical filter screen (205) are closely attached to the surfaces of the two sealing rubber rings (204). The bottom surface of the support cylinder (201) is fixedly embedded at the bottom of the filter box (1).

3. The filtering device for the production of vehicle urea solution according to claim 2, characterized in that: The bottom of the support cylinder (201) is fixedly connected with an external thread pipe (206), an internal thread cover (207) is threadedly sleeved on the surface of the external thread pipe (206), a sealing rubber pad (208) is fixedly connected to the inner surface of the internal thread cover (207), and the other side surface of the sealing rubber pad (208) is closely attached to the bottom of the external thread pipe (206), the cylindrical filter screen (205) and the support cylinder (201).

4. A filtering device for the production of vehicle urea solution according to claim 1, characterized in that: The outlet pipe component (3) includes an internal thread connecting pipe (301), a liquid flow rate sensor (302) is fixedly connected to the inner surface of the internal thread connecting pipe (301), and an outlet pipe (303) is threadedly embedded inside the internal thread connecting pipe (301).

5. The filtering device for the production of vehicle urea solution according to claim 4, characterized in that: An electric control valve three (304) is arranged on the surface of the outlet pipe (303), a water inlet pipe (305) is fixedly embedded on one side of the outlet pipe (303), an electric control valve four (306) is arranged on the surface of the water inlet pipe (305), and the horizontal position of the water inlet pipe (305) is above the electric control valve three (304).

6. The filtering device for producing vehicle urea solution according to claim 3, wherein: The inside of the internal thread cover (207) is movably sleeved on the surface of the internal thread connecting pipe (301).

7. A filtering device for the production of vehicle urea solution according to claim 4, characterized in that: The top surface of the internal thread connecting pipe (301) is fixedly embedded at the bottom of the inner cavity of the support cylinder (201).

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