Urea pump with pre-buried stainless steel water channel

Abstract

The utility model belongs to the field of urea pumps, and provides a urea pump with a pre-buried stainless steel water channel, which comprises a urea pump body, a filter component and a mounting component, the stainless steel water channel is integrally formed on the inner side of the urea pump body, and two ends of the stainless steel water channel penetrate through the urea pump body and are connected with a water inlet pipe and a water outlet pipe. The inner side of the water inlet pipe is provided with a filtering piece for filtering a flowing water body and a mounting assembly for mounting the filtering piece; according to the utility model, the filter piece for filtering the flowing water is arranged in the water inlet pipe through the mounting assembly, and the urea solution is filtered by the filter cartridge, so that solid particles and impurities contained in the urea solution are prevented from entering the inner side of the urea pump body, and the service life of the pump is prolonged; meanwhile, through cooperation of a mounting ring, a worm gear ring, a sliding block, a connecting shaft, a mounting shaft and a driving part, the mounting shaft can be driven to move by rotating a handle, so that the connecting ring and the filter cartridge are detachably positioned and mounted, and the overall assemblability and maintainability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of urea pumps, specifically a urea pump with a pre-embedded stainless steel water channel. Background Technology

[0002] The urea pump is a key component in the diesel engine exhaust aftertreatment system. Its function is to draw urea solution from the urea tank, pressurize and deliver it to the injection system. According to the instructions of the engine ECU (electronic control unit), it controls the injection amount of urea to ensure that it reacts fully with NOx in the exhaust gas. The urea solution is atomized and sprayed into the exhaust pipe through the nozzle to improve the reaction efficiency.

[0003] Urea pumps typically have internally machined water channels with inlet and outlet pipes connected at both ends. However, conventional urea pumps lack internal filtration components in the inlet pipe. Furthermore, since the urea solution may contain undissolved crystal particles or impurities introduced during transportation and storage, these particles can directly enter the pump's internal water channels, gradually accumulating and causing blockages. This reduces the urea injection volume or even completely blocks the flow. Moreover, hard impurities accelerate the wear of precision components inside the pump, shortening its service life.

[0004] To address this issue, those skilled in the art have proposed a urea pump with a pre-embedded stainless steel water channel to solve the problems mentioned in the background art. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides a urea pump with a pre-embedded stainless steel water channel, which solves the problems in the prior art where the lack of a filter element in the urea pump water channel leads to a reduction in urea injection volume and a shortened pump lifespan.

[0006] A urea pump with a pre-embedded stainless steel water channel includes a urea pump body, a filter assembly, and an installation assembly. The inner side of the urea pump body is integrally formed with a stainless steel water channel. The two ends of the stainless steel water channel pass through the urea pump body and are connected to an inlet pipe and an outlet pipe. The inner side of the inlet pipe is provided with a filter element for filtering the water flowing through it and an installation assembly for installing the filter element.

[0007] Preferably, the filter element includes a connecting ring and a filter cylinder, with the filter cylinder provided on one side of the connecting ring, and the filter cylinder having a plurality of evenly distributed filter holes.

[0008] Preferably, the mounting assembly includes a mounting ring, a worm gear ring, a slider, a connecting shaft, a mounting shaft, and a drive component. The mounting ring is provided on the inner side of the water inlet pipe. The mounting ring has radially spaced limit grooves at equal intervals around its circumference. The slider is slidably connected in the limit grooves. The connecting shaft is connected to the slider. The worm gear ring is rotatably connected to the mounting ring. The drive component is provided on one side of the worm gear ring. The worm gear ring has a diameter-changing through groove. One end of the connecting shaft passes through the diameter-changing through groove and is connected to the mounting shaft.

[0009] Preferably, the outer side of the connecting ring is provided with multiple sets of mounting grooves at equal intervals around the circumference, and the multiple sets of mounting grooves are respectively provided with multiple sets of mounting shafts.

[0010] Preferably, both the limiting groove and the slider have a T-shaped cross-section.

[0011] Preferably, the driving component includes a rotating shaft, a worm gear section, and a handle. The rotating shaft is rotatably disposed inside the water inlet pipe, and a worm gear section is disposed in the middle of the rotating shaft. The worm gear section meshes with a worm wheel, and one end of the rotating shaft passes through the water inlet pipe and is connected to a handle.

[0012] Preferably, ear plates are provided on both sides of the connecting ring, and through holes are provided on the ear plates. Alignment shafts are correspondingly provided on the mounting ring, and the alignment shafts are inserted and connected to the ear plates through the through holes for pre-positioning and installation of the connecting ring.

[0013] Compared with the prior art, the present invention has the following advantages: The urea pump body is equipped with a filter element for filtering the water flowing through it through the installation assembly in the water inlet pipe. The filter element filters the urea solution, preventing solid particles and impurities contained in the solution from entering the inner side of the urea pump body, thus extending the service life of the pump. At the same time, through the cooperation of the installation ring, worm gear ring, slider, connecting shaft, installation shaft and drive component, the installation shaft can be moved by turning the handle, thereby enabling the connecting ring and filter element to be detachably positioned and installed, which improves the overall assemblability and maintainability. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the urea pump body of this utility model;

[0015] Figure 2 This is a structural diagram of the water inlet pipe of this utility model;

[0016] Figure 3 This is a cross-sectional view of the water inlet pipe of this utility model;

[0017] Figure 4 This utility model Figure 3 The diagram shows the split structure.

[0018] In the picture:

[0019] 1. Urea pump body; 2. Stainless steel water channel; 3. Inlet pipe; 4. Outlet pipe; 5. Connecting ring; 6. Filter cartridge; 7. Mounting ring; 8. Worm gear ring; 9. Slider; 10. Connecting shaft; 11. Mounting shaft; 12. Limiting groove; 13. Variable diameter through groove; 14. Mounting groove; 15. Rotating shaft; 16. Worm section; 17. Handle; 18. Ear plate; 19. Through hole; 20. Alignment shaft. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] As attached Figure 1 To be continued Figure 4 As shown:

[0022] This utility model provides a urea pump with a pre-embedded stainless steel water channel, including a urea pump body 1, a filter assembly and an installation assembly. The inner side of the urea pump body 1 is integrally formed with a stainless steel water channel 2. The two ends of the stainless steel water channel 2 pass through the urea pump body 1 and are connected to an inlet pipe 3 and an outlet pipe 4. The inner side of the inlet pipe 3 is provided with a filter element for filtering the water flowing through it and an installation assembly for installing the filter element.

[0023] refer to Figure 3 The filter element includes a connecting ring 5 and a filter cylinder 6. The filter cylinder 6 is provided on one side of the connecting ring 5, and multiple evenly distributed filter holes are provided on the filter cylinder 6.

[0024] The filter cartridge 6 can filter the flowing water, preventing particulate impurities from entering the inside of the urea pump body 1 and extending the service life of the urea pump body 1.

[0025] refer to Figure 3 and Figure 4 The installation components include an installation ring 7, a worm gear ring 8, a slider 9, a connecting shaft 10, an installation shaft 11, and a drive component. An installation ring 7 is provided on the inner side of the water inlet pipe 3. A limit groove 12 is radially provided on the installation ring 7 at equal intervals around its circumference. A slider 9 is slidably connected in the limit groove 12. A connecting shaft 10 is connected to the slider 9. A worm gear ring 8 is rotatably connected to the installation ring 7. A drive component is provided on one side of the worm gear ring 8. A variable diameter through groove 13 is provided on the worm gear ring 8. One end of the connecting shaft 10 passes through the variable diameter through groove 13 and is connected to the installation shaft 11.

[0026] The worm gear ring 8 is driven to rotate by the driving component. During the rotation of the worm gear ring 8, the variable diameter through groove 13 will exert a thrust on the connecting shaft 10. Under the force, the connecting shaft 10 will drive the mounting shaft 11 and the slider 9 to move along the limiting groove 12. During the movement, the mounting shaft 11 will fasten the connecting ring 5.

[0027] refer to Figure 4 Multiple sets of mounting grooves 14 are equidistantly arranged on the outer side of the connecting ring 5, and the multiple sets of mounting grooves 14 are respectively set to correspond to multiple sets of mounting shafts 11.

[0028] During the movement of the mounting shaft 11, it will insert into the mounting groove 14 to achieve the positioning of the connecting ring 5 and the filter cylinder 6.

[0029] The cross-sections of the limiting groove 12 and the slider 9 are both designed as T-shaped structures.

[0030] The T-shaped structure enables the slider 9 and the limiting groove 12 to form a vertical limit, preventing the slider 9 from detaching from the mounting ring 7.

[0031] refer to Figure 2 , Figure 3 and Figure 4 The driving component includes a rotating shaft 15, a worm gear section 16, and a handle 17. The rotating shaft 15 is rotatably mounted inside the water inlet pipe 3. The worm gear section 16 is located in the middle of the rotating shaft 15 and meshes with a worm wheel. One end of the rotating shaft 15 passes through the water inlet pipe 3 and is connected to the handle 17.

[0032] The handle 17 can drive the rotating shaft 15 to rotate. During the rotation of the rotating shaft 15, the worm section 16 will mesh with the worm wheel, and the worm wheel ring 8 will be driven to rotate under the meshing force.

[0033] refer to Figure 4 Both sides of the connecting ring 5 are provided with ear plates 18, and through holes 19 are provided on the ear plates 18. The mounting ring 7 is provided with an alignment shaft 20, which is inserted and connected to the ear plates 18 through the through holes 19 for pre-positioning and installation of the connecting ring 5.

[0034] The connecting ring 5 is pre-positioned by the ear plate 18 and the alignment shaft 20, so that the mounting groove 14 on the outer side of the connecting ring 5 is in the same position as the corresponding mounting shaft 11 during the installation process.

[0035] Working principle: In use, align the through hole 19 on the ear plate 18 with the alignment shaft 20, insert the connecting ring 5 into the inner side of the worm gear ring 8, and then turn the handle 17. The handle 17 drives the worm section 16 to rotate through the rotating shaft 15. The worm section 16 meshes with the worm gear ring 8, and under the meshing force, it drives the worm gear ring 8 to rotate. During the rotation of the worm gear ring 8, it will drive the variable diameter through groove 13 to apply a thrust to the connecting shaft 10. Under the force, the connecting shaft 10 drives the mounting shaft 11 and the slider 9 to move along the limiting groove 12. During the movement, the mounting shaft 11 will be inserted into the mounting groove 14 to tighten the connecting ring 5, thus completing the installation of the filter cartridge 6. The filter cartridge 6 is used to filter the introduced water to avoid impurities affecting the service life of the urea pump body 1.

[0036] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A urea pump with a pre-embedded stainless steel waterway, characterized in that, The application relates to a urea pump body (1), a filtering assembly and a mounting assembly, wherein a stainless steel water channel (2) is integrally formed on the inner side of the urea pump body (1), water inlet pipes (3) and water outlet pipes (4) are connected to the two ends of the stainless steel water channel (2) and penetrate through the urea pump body (1), and a filtering element for filtering water and a mounting assembly for mounting the filtering element are arranged on the inner side of the water inlet pipes (3).

2. The urea pump with embedded stainless steel waterway as claimed in claim 1, wherein: The filtering element comprises a connecting ring (5) and a filtering cylinder (6), the filtering cylinder (6) is arranged on one side of the connecting ring (5), and a plurality of water filtering holes are uniformly arranged on the filtering cylinder (6).

3. The urea pump with embedded stainless steel waterway as claimed in claim 2, wherein: The mounting assembly comprises a mounting ring (7), a worm wheel ring (8), a sliding block (9), a connecting shaft (10), a mounting shaft (11) and a driving element, the mounting ring (7) is arranged on the inner side of the water inlet pipes (3), a limiting groove (12) is radially and circumferentially arranged on the mounting ring (7), the sliding block (9) is slidably connected in the limiting groove (12), the connecting shaft (10) is connected to the sliding block (9), the worm wheel ring (8) is rotatably connected to the mounting ring (7), the driving element is arranged on one side of the worm wheel ring (8), a variable-diameter through groove (13) is arranged on the worm wheel ring (8), and one end of the connecting shaft (10) is connected with the mounting shaft (11) through the variable-diameter through groove (13).

4. The urea pump with embedded stainless steel waterway as claimed in claim 3, wherein: A plurality of groups of mounting grooves (14) are circumferentially and equidistantly arranged on the outer side of the connecting ring (5), and the mounting grooves (14) are correspondingly arranged with the mounting shafts (11).

5. The urea pump with embedded stainless steel waterway as claimed in claim 3 wherein: The limiting groove (12) and the sliding block (9) are both provided with T-shaped structures.

6. The urea pump with embedded stainless steel waterway as claimed in claim 3 wherein: The driving element comprises a rotating shaft (15), a worm segment (16) and a handle (17), the rotating shaft (15) is rotatably arranged in the water inlet pipes (3), the worm segment (16) is arranged in the middle of the rotating shaft (15), the worm segment (16) is meshed with the worm wheel, and the handle (17) is connected to one end of the rotating shaft (15) and penetrates through the water inlet pipes (3).

7. The urea pump with embedded stainless steel waterway as claimed in claim 3 wherein: Ears (18) are arranged on the two sides of the connecting ring (5), a through hole (19) is arranged in the ear (18), an alignment shaft (20) is correspondingly arranged on the mounting ring (7), the alignment shaft (20) is connected with the ear (18) through the through hole (19), and the alignment shaft (20) is used for prepositioning and mounting the connecting ring (5).

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