Urea aqueous solution filtering device

Abstract

The utility model discloses a urea water solution filtering device which comprises a mounting cover, the upper surface of the mounting cover is in an inclined state, the section of the mounting cover is in a circular ring shape, an interception assembly is mounted at the top of the mounting cover and comprises a filtering frame rotationally connected with the outer wall of the top of the mounting cover, and the filtering frame is in a cylindrical shape. A filter screen is arranged at the bottom of the circumferential inner wall of the filter frame, a supporting frame is fixedly connected to the circumferential outer wall of the mounting cover, an intercepting plate is fixedly connected to one end of the supporting frame, the intercepting plate is attached to the upper surface of the filter screen of the filter frame, and the bottom of the circumferential outer wall of the filter frame is fixedly sleeved with a driven gear ring in a centering mode; by arranging the interception assembly, urea water impurities intercepted by the filter screen can be temporarily collected at the same position, later treatment is facilitated, and the situation that the filtering efficiency is affected due to excessive impurity accumulation can also be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a urea aqueous solution filtering device. Background Art

[0002] Automotive urea is an essential product for heavy-duty diesel vehicles to meet the National IV emission standards. Automotive urea refers to a urea aqueous solution with a urea concentration of 32.5% and ultrapure water as the solvent. The raw materials are special raw materials for automotive urea and ultrapure water. When producing the urea aqueous solution, the raw materials are first dissolved in water, and then the impurities are filtered out.

[0003] After searching, the utility model with Chinese patent publication number CN215195743U discloses a filtering device for the production of urea aqueous solution, including a hydrolysis box and a filtering structure, the filtering structure includes a mesh box, an inlet, gauze, a longitudinal movable structure, an internal rotating structure and an external rotating structure, the longitudinal movable structure includes a motor support seat, a top motor, a screw and a fixed sleeve, and the internal rotating structure includes an internal motor, a stirring shaft and a stirring fan blade.

[0004] The above-mentioned device utilizes a mesh box and gauze to intercept impurities in the solution. However, after the solution is processed, the impurities will remain on the gauze and the holes in the mesh box. If there are many impurities, both devices need to be taken out for cleaning and then reinstalled. The cleaning process is inconvenient to operate and there is room for improvement. Utility Model Content

[0005] The purpose of the utility model is to provide a urea aqueous solution filtering device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a urea aqueous solution filtering device, comprising a mounting cover, characterized in that: the upper surface of the mounting cover is in an inclined state, and the cross-section is arranged in a circular ring shape, a retention assembly is installed on the top of the mounting cover, and the retention assembly includes a filter frame rotatably connected to the outer wall of the top of the mounting cover, the filter frame is arranged in a cylindrical shape, and a filter screen is arranged at the bottom of the circumferential inner wall of the filter frame, the circumferential outer wall of the mounting cover is fixedly connected to a support frame, one end of the support frame is fixedly connected to an interception plate, and the interception plate is in contact with the upper surface of the filter screen of the filter frame.

[0007] As a further preferred embodiment of the present technical solution, a driven gear ring is provided on the centering fixed sleeve at the bottom of the circumferential outer wall of the filter frame, a motor is fixedly installed on the top of the circumferential outer wall of the mounting cover, a transmission gear is coaxially fixed on the motor shaft, and the transmission gear and the driven gear ring are meshed.

[0008] The urea water impurities intercepted by the filter can be temporarily collected in the same position, which is convenient for later processing and can also avoid excessive accumulation of impurities affecting the filtration efficiency. The starting motor drives the transmission gear to rotate slowly, and the transmission gear drives the driven gear ring meshing with it to rotate. The driven gear ring drives the filter frame to rotate on the top of the installation cover. The intercepted impurities will gradually move from low to high, and the attached water will gradually drip. When these impurities pass through the interception plate, they will be intercepted and then moved from high to low and put into use again. In this reciprocating manner, the intercepted impurities will be concentrated in the recessed part of the interception plate.

[0009] As a further preferred embodiment of the present technical solution, a cleaning assembly is installed inside the mounting cover, and the cleaning assembly includes a brush rotatably connected in the mounting cover, and the brush is located on one side of the interception plate.

[0010] As a further preferred embodiment of the present technical solution, a plurality of equally spaced connecting rods are fixedly connected to the circumferential outer wall of the filter frame, one end of the bottom of the plurality of connecting rods is fixedly connected to the same bevel gear ring, the center line of the bevel gear ring is consistent with the center line of the filter frame, a bevel gear is coaxially fixed to one end of the brush, and the bevel gear is meshed with the bevel gear ring.

[0011] As the filter frame rotates, it will drive the bevel gear ring to rotate synchronously through multiple connecting rods. Since the brush and the filter frame are in a parallel state, the bevel gear ring can drive the bevel gear to rotate through meshing, and the bevel gear drives the brush to rotate. The brush can clean the impurities stuck in the filter mesh to the top position, thereby making the subsequent interception effect more thorough.

[0012] As a further preferred embodiment of the present technical solution, a plurality of through holes distributed at equal distances are provided in the intercepting plate.

[0013] As a further preferred embodiment of the present technical solution, the motor is a slow-speed electric motor.

[0014] The utility model provides a urea aqueous solution filtering device, which has the following beneficial effects:

[0015] (1) The utility model can temporarily collect the urea water impurities intercepted by the filter in the same position by setting an interception component, which is convenient for later processing and can also prevent the accumulation of excessive impurities from affecting the filtering efficiency. The starting motor drives the transmission gear to rotate slowly, and the transmission gear drives the driven gear ring meshing with it to rotate. The driven gear ring drives the filter frame to rotate on the top of the installation cover. The intercepted impurities will gradually move from a low place to a high place, and the attached water will gradually drip. When these impurities pass through the interception plate, they will be intercepted and then moved from a high place to a low place and put into use again. In this reciprocating manner, the intercepted impurities will be concentrated in the concave part of the interception plate.

[0016] (2) The utility model provides a cleaning component. When the filter frame rotates, it drives the bevel gear ring to rotate synchronously through multiple connecting rods. Since the brush and the filter frame are in a parallel state, the bevel gear ring can drive the bevel gear to rotate through meshing, and the bevel gear drives the brush to rotate. The brush can clean the impurities stuck in the filter mesh to the top position, thereby making the subsequent interception effect more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0019] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0021] In the figure: 1, installation cover; 2, filter frame; 3, interception assembly; 4, cleaning assembly; 301, driven gear ring; 302, motor; 303, transmission gear; 304, support frame; 305, interception plate; 401, connecting rod; 402, bevel gear ring; 403, brush; 404, bevel gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1 and Figure 3 As shown, in this embodiment, a urea aqueous solution filtering device includes a mounting cover 1, characterized in that: the upper surface of the mounting cover 1 is in an inclined state, and the cross-section is arranged in a circular ring shape, a retention component 3 is installed on the top of the mounting cover 1, and the retention component 3 includes a filter frame 2 rotatably connected to the outer wall of the top of the mounting cover 1, the filter frame 2 is arranged in a cylindrical shape, and a filter screen is arranged at the bottom of the circumferential inner wall of the filter frame 2, a support frame 304 is fixedly connected to the circumferential outer wall of the mounting cover 1, and an interception plate 305 is fixedly connected to one end of the support frame 304, and the interception plate 305 is in contact with the upper surface of the filter screen of the filter frame 2.

[0024] A driven gear ring 301 is fixedly mounted on the center of the bottom of the circumferential outer wall of the filter frame 2, and a motor 302 is fixedly mounted on the top of the circumferential outer wall of the mounting cover 1. A transmission gear 303 is coaxially fixed to the rotating shaft of the motor 302, and the transmission gear 303 is meshed with the driven gear ring 301.

[0025] The starting motor 302 drives the transmission gear 303 to rotate slowly, and the transmission gear 303 drives the driven gear ring 301 meshing with it to rotate, and the driven gear ring 301 drives the filter frame 2 to rotate on the top of the mounting cover 1, and the intercepted impurities will gradually move from low to high, and the attached water will gradually drip. When these impurities pass through the interception plate 305, they will be intercepted and then moved from high to low and put into use again. In this reciprocating manner, the intercepted impurities will be concentrated in the recessed part of the interception plate 305.

[0026] like Figure 2 and Figure 4 As shown, a cleaning assembly 4 is installed inside the mounting cover 1 , and the cleaning assembly 4 includes a brush 403 rotatably connected to the mounting cover 1 , and the brush 403 is located on one side of the interception plate 305 .

[0027] The circumferential outer wall of the filter frame 2 is fixedly connected with a plurality of equidistantly distributed connecting rods 401, one end of the bottom of the plurality of connecting rods 401 is fixedly connected with the same bevel gear ring 402, the center line of the bevel gear ring 402 is consistent with the center line of the filter frame 2, and a bevel gear 404 is coaxially fixed with one end of the brush 403, and the bevel gear 404 is meshed with the bevel gear ring 402.

[0028] While the filter frame 2 is rotating, it will drive the bevel gear ring 402 to rotate synchronously through multiple connecting rods 401. Since the brush 403 and the filter frame 2 are in a parallel state, the bevel gear ring 402 can drive the bevel gear 404 to rotate through meshing, and the bevel gear 404 drives the brush 403 to rotate. The brush 403 can clean the impurities stuck in the filter mesh to the top position, thereby making the subsequent retention effect more thorough.

[0029] like Figure 1 As shown, the interception plate 305 is provided with a plurality of through holes which are distributed at equal distances, and the solution containing the impurities can flow to the outside through the through holes, thereby preventing the impurities from flowing downward with the solution.

[0030] like Figure 1 and Figure 3 As shown, the motor 302 is a slow motor, which can prevent the filter frame 2 from rotating too fast so that the urea solution is driven to the top position to disperse the intercepted impurities.

[0031] The utility model provides a urea aqueous solution filtering device, and the specific working principle is as follows:

[0032] When the device is working, pour the urea aqueous solution toward the lower position of the filter frame 2, the urea aqueous solution will pass through the filter and slide downward, and the impurities therein will be intercepted by the filter. At the same time, the starting motor 302 drives the transmission gear 303 to rotate slowly, and the transmission gear 303 drives the driven gear ring 301 meshing with it to rotate, and the driven gear ring 301 drives the filter frame 2 to rotate on the top of the installation cover 1, and the intercepted impurities will gradually move from the lower position to the higher position, and the attached water will gradually drip. When these impurities pass through the interception plate 305, they will be intercepted and then The filter frame 2 is moved from a high place to a low place and put into use again, and the intercepted impurities will be concentrated in the recessed part of the interception plate 305. While the filter frame 2 is rotating, it will drive the bevel gear ring 402 to rotate synchronously through multiple connecting rods 401. Since the brush 403 and the filter frame 2 are in a parallel state, the bevel gear ring 402 can drive the bevel gear 404 to rotate through meshing, and the bevel gear 404 drives the brush 403 to rotate. The brush 403 can clean the impurities stuck in the mesh of the filter to the top position, thereby making the subsequent interception effect more thorough.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A urea aqueous solution filtering device, comprising a mounting cover (1), characterized in that: The upper surface of the mounting cover (1) is in an inclined state, and the cross section is arranged in a circular ring shape. A retention assembly (3) is installed on the top of the mounting cover (1). The retention assembly (3) comprises a filter frame (2) rotatably connected to the outer wall of the top of the mounting cover (1). The filter frame (2) is arranged in a cylindrical shape, and a filter screen is arranged at the bottom of the circumferential inner wall of the filter frame (2). The circumferential outer wall of the mounting cover (1) is fixedly connected to a support frame (304), and one end of the support frame (304) is fixedly connected to an interception plate (305), and the interception plate (305) is in contact with the upper surface of the filter screen of the filter frame (2).

2. The urea aqueous solution filtering device according to claim 1, characterized in that: A driven gear ring (301) is fixedly mounted on the center of the bottom of the circumferential outer wall of the filter frame (2), a motor (302) is fixedly mounted on the top of the circumferential outer wall of the mounting cover (1), a transmission gear (303) is coaxially fixed to the rotating shaft of the motor (302), and the transmission gear (303) is meshed with the driven gear ring (301).

3. The urea aqueous solution filtering device according to claim 1, characterized in that: A cleaning assembly (4) is installed inside the mounting cover (1), and the cleaning assembly (4) comprises a brush (403) rotatably connected to the mounting cover (1), and the brush (403) is located on one side of the interception plate (305).

4. The urea aqueous solution filtering device according to claim 3, characterized in that: The filter frame (2) is fixedly connected to a plurality of equidistantly distributed connecting rods (401) on the circumferential outer wall thereof; one end of the bottom of the plurality of connecting rods (401) is fixedly connected to a same bevel gear ring (402); the center line of the bevel gear ring (402) is consistent with the center line of the filter frame (2); a bevel gear (404) is coaxially fixed to one end of the brush (403); the bevel gear (404) is meshed with the bevel gear ring (402).

5. The urea aqueous solution filtering device according to claim 1, characterized in that: The interception plate (305) is provided with a plurality of through holes which are distributed at equal distances.

6. The urea aqueous solution filtering device according to claim 2, characterized in that: The motor (302) is a slow-speed electric motor.

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