A backup line switching device for a urea circulation pump outlet

Abstract

The utility model discloses a kind of spare pipeline switching device for urea circulating pump outlet, it is related to urea circulating pump technical field, including urea pump, including, switching component, the bifurcated pipeline is fixedly connected with urea pump side, the switching component is installed in bifurcated pipeline side, including box, first sliding slot and second sliding slot are opened in the both sides of box, the utility model is switched by the cooperation of gear and arc toothed plate, main spare pipeline can be realized fast, response speed is greatly accelerated, leakage and fluctuation of urea solution in switching process can be prevented by water baffle, so that urea solution can be smoothly switched from main pipeline to spare pipeline, seamless connection of flow is realized, production efficiency is improved, and only need to rotate disc to complete pipeline switching, greatly reduce labor intensity, reduce the possibility of operation failure caused by human factor.

Description

Technical Field

[0001] This utility model relates to the field of urea circulation pump technology, and in particular to a backup pipeline switching device for the outlet of a urea circulation pump. Background Technology

[0002] As a core component of the selective catalytic reduction system, the reliability of the urea circulation pump's outlet pipeline directly affects the operational stability of the entire emission control system. In existing technologies, the switching device for the backup pipeline often adopts a traditional parallel structure of double ball valves, which achieves manual switching between the main and backup pipelines through two independently controlled shut-off valves. This design is based on mature valve technology and has the advantages of simple structure and reliable sealing, and can meet basic switching requirements under static conditions.

[0003] However, in practical applications, there are still some unresolved issues. The following are some common problems of the standby pipeline switching device used for the urea circulating pump outlet: When switching between the main and standby pipelines in the traditional dual-ball valve parallel structure, the switching process is cumbersome due to the need for manual operation of two independent shut-off valves, resulting in a slow response speed. During the switching process, the traditional structure has difficulty in achieving seamless flow connection, leading to a decrease in production efficiency. The manually operated dual-valve structure relies on manual intervention, which not only increases the labor intensity of operators but also makes it easy for operational errors to occur due to human factors. Utility Model Content

[0004] In view of the problems existing in the above-mentioned backup pipeline switching device for urea circulation pump outlet, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is how to speed up the response speed and achieve seamless connection of urea solution flow during the switching of main and backup pipelines, so as to improve production efficiency, reduce manual intervention and reduce labor intensity.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a backup pipeline switching device for the outlet of a urea circulating pump, comprising a urea pump, which includes,

[0007] A switching assembly is provided, wherein a branch pipe is fixedly connected to one side of the urea pump, and the switching assembly is installed on one side of the branch pipe. The assembly includes a housing, with a first sliding groove and a second sliding groove on both sides of the housing. A first arc-shaped toothed plate and a second arc-shaped toothed plate are slidably connected inside the housing. A gear is rotatably connected inside the housing, and the gear meshes with the first and second arc-shaped toothed plates.

[0008] The water outlet pipe is installed on one side of the switching component and includes a main pipe and a backup pipe. Both sides of the main pipe and the backup pipe are fixedly connected with a first clip and a second clip.

[0009] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, the box body is provided with a first limiting groove and a second limiting groove on both sides, and the first buckle and the second buckle slide within the first limiting groove and the second limiting groove.

[0010] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: a third sliding groove is provided in the first limiting groove, and outlet grooves are provided on both sides of the box body, which are connected to the first limiting groove and the second sliding groove.

[0011] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, the top of the housing is provided with a threaded hole, which is connected to the first arc-shaped toothed plate and the second arc-shaped toothed plate. A bolt is installed in the threaded hole, and the surface of the bolt is fixedly connected with a thread, which mates with the threaded hole.

[0012] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: the first arc-shaped toothed plate and the second arc-shaped toothed plate are provided with a first moving groove and a second moving groove, and the first limiting post and the second limiting post are fixedly connected inside the box, and the first limiting post and the second limiting post slide within the first moving groove and the second moving groove.

[0013] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: a first moving block and a second moving block are fixedly connected to both sides of the first arc-shaped toothed plate and the second arc-shaped toothed plate, the first moving block and the second moving block slide in the first sliding groove and the second sliding groove, and a first limiting bar is installed on one side of the first moving block and the second moving block.

[0014] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: the bottom of the first arc-shaped toothed plate and the second arc-shaped toothed plate are both fixedly connected to a baffle plate, a connecting rod is fixedly connected to one side of the gear and extends to the outside of the housing, and a disc is fixedly connected to one end of the connecting rod.

[0015] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, a concave sealing ring is installed on one side of the housing, and a convex sealing ring is installed on one side of both the main pipeline and the backup pipeline, which cooperate with the concave sealing ring.

[0016] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: a first limiting block is slidably connected inside the first buckle, and the first limiting block slides in the third sliding groove.

[0017] As a preferred embodiment of the backup pipeline switching device for the outlet of the urea circulating pump described in this utility model, wherein: a fixing strip is fixedly connected to one side of the first buckle, a second limiting rod is installed at one end of the fixing strip, a chain is sleeved on the surface of the second limiting rod, and the other end of the chain is sleeved on the surface of the first limiting rod.

[0018] The beneficial effects of this utility model are as follows: the cooperation between gears and arc-shaped toothed plates enables rapid switching between main and backup pipelines, greatly accelerating the response speed. The baffle plate can prevent leakage and fluctuation of urea solution during the switching process, allowing urea solution to be smoothly switched from the main pipeline to the backup pipeline, achieving seamless flow connection, improving production efficiency. Furthermore, pipeline switching can be completed simply by rotating the disc, greatly reducing labor intensity and minimizing the possibility of operational errors caused by human factors. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the backup pipeline switching device used at the outlet of the urea circulating pump.

[0021] Figure 2 A perspective sectional view of the switching assembly used in the backup pipeline switching device at the outlet of the urea circulating pump.

[0022] Figure 3 A perspective view of the switching components for the backup pipeline switching device at the outlet of the urea circulation pump.

[0023] Figure 4 This is a three-dimensional view of the main pipeline used for the backup pipeline switching device at the outlet of the urea circulating pump.

[0024] Figure 5 This is a three-dimensional view of the backup pipeline used for the backup pipeline switching device at the outlet of the urea circulating pump.

[0025] Figure 6 This is a cross-sectional view of the main pipeline used for the backup pipeline switching device at the outlet of the urea circulating pump.

[0026] Figure 7 This is a magnified perspective view of a portion of the backup pipeline switching device used at the outlet of the urea circulating pump.

[0027] Figure 8 An enlarged 3D view of the main pipeline chain used in the backup pipeline switching device at the outlet of the urea circulating pump.

[0028] Figure 9 An enlarged 3D view of the backup pipeline chain used in the backup pipeline switching device at the outlet of the urea circulating pump.

[0029] In the diagram: 1. Urea pump; 11. Branch pipe; 2. Switching assembly; 21. Housing; 21-1. First sliding groove; 21-2. Second sliding groove; 21-3. First limiting post; 21-4. Second limiting post; 21-5. Threaded hole; 21-6. First limiting groove; 21-61. Third sliding groove; 21-7. Second limiting groove; 21-8. Outlet groove; 21-9. Concave sealing ring; 22. First arc-shaped toothed plate; 22-1. First moving groove; 22-2. First moving block; 22-3. 1. Limiting bar; 22-4. Water baffle; 23. Second arc-shaped toothed plate; 23-1. Second moving groove; 23-2. Second moving block; 24. Gear; 24-1. Connecting rod; 24-2. Disc; 25. Bolt; 25-1. Thread; 3. Water outlet pipe; 31. Main pipe; 31-1. First buckle; 31-2. Second buckle; 31-3. First limiting block; 31-4. Convex sealing ring; 31-5. Fixing strip; 31-6. Second limiting bar; 31-7. Chain; 32. Spare pipe. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2This is the first embodiment of the present invention. This embodiment provides a backup pipeline switching device for the outlet of a urea circulation pump. The backup pipeline switching device for the outlet of a urea circulation pump includes a urea pump 1, a switching component 2, and an outlet pipe 3. The switching component 2 achieves seamless flow connection when switching the backup pipe 32, and the cooperation between the gear 24 and the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 reduces the labor intensity.

[0035] Specifically, the switching component 2 is fixedly connected to a branch pipe 11 on one side of the urea pump 1. The switching component 2 is installed on one side of the branch pipe 11 and includes a housing 21. The housing 21 has a first sliding groove 21-1 and a second sliding groove 21-2 on both sides. The housing 21 has a first arc-shaped toothed plate 22 and a second arc-shaped toothed plate 23 slidably connected inside. The housing 21 has a gear 24 rotatably connected inside, and the gear 24 meshes with the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23.

[0036] The switching component 2 can be used to switch between the main pipe 31 and the backup pipe 32. When it is necessary to switch the pipe, the disc 24-2 is rotated. The disc 24-2 drives the connecting rod 24-1 to rotate, which in turn causes the gear 24 to rotate. Since the gear 24 meshes with the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23, the rotation of the gear 24 will cause the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 to slide inside the housing 21.

[0037] Specifically, the water outlet pipe 3 is installed on one side of the switching component 2, including the main pipe 31 and the backup pipe 32. The main pipe 31 and the backup pipe 32 are fixedly connected to the first buckle 31-1 and the second buckle 31-2 on both sides.

[0038] By setting up a main pipe 31 and a backup pipe 32 in the water outlet pipe 3, when the main pipe 31 is damaged or under different working conditions, by rotating the disc 24-2, the gear 24 drives the first arc-shaped toothed plate 22 to move down to block the urea solution, and drives the second arc-shaped toothed plate 23 to move up to allow the urea solution to flow out.

[0039] Example 2

[0040] Reference Figures 2-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0041] Specifically, the box body 21 has a first limiting groove 21-6 and a second limiting groove 21-7 on both sides, and the first buckle 31-1 and the second buckle 31-2 slide within the first limiting groove 21-6 and the second limiting groove 21-7.

[0042] By opening the first limiting groove 21-6 and the second limiting groove 21-7, the first buckle 31-1 and the second buckle 31-2 play a guiding and positioning role, ensuring the accurate docking of the main pipe 31 and the backup pipe 32 with the switching component 2, avoiding offset or misalignment during the connection process, and preventing loosening or falling off due to external vibration.

[0043] A third sliding groove 21-61 is provided in the first limiting groove 21-6, and an outlet groove 21-8 is provided on both sides of the box body 21, which is connected to the first limiting groove 21-6 and the third sliding groove 21-61.

[0044] By setting the outlet groove 21-8, when it is necessary to switch the main pipe 31 and the backup pipe 32, the first buckle 31-1 and the second buckle 31-2 slide from the first limiting groove 21-6 and the second limiting groove 21-7 to the outlet groove 21-8, so that the first limiting block 31-3 can be taken out from the outlet groove 21-8, thereby allowing the main pipe 31 or the backup pipe 32 to be smoothly separated from the switching component 2.

[0045] The top of the housing 21 has a threaded hole 21-5, which is connected to the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23. A bolt 25 is installed in the threaded hole 21-5, and a thread 25-1 is fixedly connected to the surface of the bolt 25. The thread 25-1 is engaged with the threaded hole 21-5.

[0046] By opening threaded holes 21-5, bolts 25 are fixed to the first arc-shaped toothed plate 22 or the second arc-shaped toothed plate 23 through threads 25-1, preventing the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 from accidentally sliding and causing urea solution to leak.

[0047] The first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 have a first moving groove 22-1 and a second moving groove 23-1 on their surfaces. The first limiting post 21-3 and the second limiting post 21-4 are fixedly connected inside the housing 21. The first limiting post 21-3 and the second limiting post 21-4 slide within the first moving groove 22-1 and the second moving groove 23-1.

[0048] By opening the first moving groove 22-1 and the second moving groove 23-1, the first limiting post 21-3 and the second limiting post 21-4 slide in the groove, thereby limiting and guiding the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23.

[0049] The first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 are fixedly connected to the first moving block 22-2 and the second moving block 23-2 on both sides. The first moving block 22-2 and the second moving block 23-2 slide in the first sliding groove 21-1 and the second sliding groove 21-2. The first limiting rod 22-3 is installed on one side of the first moving block 22-2 and the second moving block 23-2.

[0050] By setting the first moving block 22-2 and the second moving block 23-2, when the disc 24-2 is rotated, the first moving block 22-2 and the second moving block 23-2 slide within the first sliding groove 21-1 and the second sliding groove 21-2, making the movement of the fixing strip 31-5 and the first buckle 31-1 more stable.

[0051] Both the bottom of the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 are fixedly connected to a baffle plate 22-4. A connecting rod 24-1 is fixedly connected to one side of the gear 24 and extends to the outside of the housing 21. A disc 24-2 is fixedly connected to one end of the connecting rod 24-1.

[0052] By setting up a baffle plate 22-4, the baffle plate 22-4 can prevent urea solution from splashing out during the switching process, further protecting the normal operation of the device. Moreover, the design of the connecting rod 24-1 and the disc 24-2 makes it easier for the operator to control the rotation of the gear 24 by rotating the disc 24-2, thereby realizing the switching operation between the main pipeline 31 and the backup pipeline 32. The operation is simple and convenient, reducing labor costs and operational difficulty.

[0053] A concave sealing ring 21-9 is installed on one side of the housing 21, and a convex sealing ring 31-4 is installed on one side of the main pipe 31 and the spare pipe 32, which cooperate with the concave sealing ring 21-9.

[0054] By installing concave sealing ring 21-9 and convex sealing ring 31-4, the two work together to form a good sealing structure, preventing leakage of urea solution at the connection points of the main pipeline 31, the backup pipeline 32 and the switching component 2, and improving the sealing performance and reliability of the entire backup pipeline switching device.

[0055] The first buckle 31-1 has a first limiting block 31-3 internally slidably connected, and the first limiting block 31-3 slides within the third sliding groove 21-61.

[0056] By setting the first limiting block 31-3, the first buckle 31-1 is prevented from sliding out of the first limiting groove 21-6, which would cause the main pipe 31 and the spare pipe 32 to fall off accidentally. The first limiting block 31-3 limits the first buckle 31-1. If the first buckle 31-1 slides out, the first limiting block 31-3 needs to be taken out from the outlet groove 21-8 from the first buckle 31-1, and then the main pipe 31 and the spare pipe 32 can be disassembled.

[0057] A fixing strip 31-5 is fixedly connected to one side of the first buckle 31-1. A second limiting rod 31-6 is installed at one end of the fixing strip 31-5. A chain 31-7 is sleeved on the surface of the second limiting rod 31-6, and the other end of the chain 31-7 is sleeved on the surface of the first limiting rod 22-3.

[0058] By setting the chain 31-7, when the disc 24-2 is rotated to make the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23 slide, the first buckle 31-1 will move within the first limiting groove 21-6 to fix the first buckle 31-1. The main pipe 31 and the spare pipe 32 can be fixed and pre-disassembled by the chain 31-7.

[0059] When in use, if the main pipe 31 is damaged or needs to be switched to the backup pipe 32 according to different working conditions, first remove the bolt 25 from the first arc-shaped toothed plate 22 to release the fixation of the first arc-shaped toothed plate 22. The disc 24-2 rotates, driving the gear 24 to rotate. The rotation of the gear 24 will drive the first arc-shaped toothed plate 22 to move downward, blocking the liquid in the main pipe 31. At the same time, the second arc-shaped toothed plate 23 moves upward, preparing for the unblocking of the backup pipe 32. During this process, the first limiting post 21-3 and the second limiting post 21-4 slide in the first moving groove 22-1 and the second moving groove 23-1 respectively, playing a limiting and guiding role on the first arc-shaped toothed plate 22 and the second arc-shaped toothed plate 23, ensuring that their movement direction is accurate.

[0060] When the first arc-shaped toothed plate 22 moves downward, the first moving block 22-2 slides in the first sliding groove 21-1. The first moving block 22-2 abuts against the fixing strip 31-5 and moves downward, causing the first buckle 31-1 to move in the first limiting groove 21-6. The first limiting block 31-3 slides in the third sliding groove 21-61 to pre-disassemble the main pipe 31. After the first arc-shaped toothed plate 22 completely blocks the main pipe 31, the first limiting block 31-3 is removed to disassemble the main pipe 31.

[0061] The second arc-shaped toothed plate 23 moves upward, causing the second moving block 23-2 to slide within the second sliding groove 21-2. The second moving block 23-2 drives the fixing strip 31-5 on the spare pipe 32 to move upward via the chain 31-7. The first buckle 31-1 on the spare pipe 32 moves within the first limiting groove 21-6, and the first limiting block 31-3 slides within the third sliding groove 21-61 to fix the spare pipe 32, thus clearing the spare pipe 32 and allowing urea solution to flow out. The bolt 25, through its thread 25-1, raises the connection between the housing 21 and the second arc-shaped toothed plate and the second arc-shaped toothed plate 23, preventing accidental slippage that could cause urea solution leakage. The convex sealing ring 31-4 and the concave sealing ring 21-9 fit tightly together to prevent urea solution leakage at the connection point. The baffle plate 22-4 prevents urea solution from splashing out during the switching process, protecting the normal operation of the device. If it is necessary to switch back to the main pipe 31, the disc 24-2 is rotated in the opposite direction, and the above reverse operation process is repeated.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A backup pipeline switching device for the outlet of a urea circulating pump, comprising a urea pump (1), characterized in that: include, The switching assembly (2) is fixedly connected to a branch pipe (11) on one side of the urea pump (1). The switching assembly (2) is installed on one side of the branch pipe (11) and includes a housing (21). A first sliding groove (21-1) and a second sliding groove (21-2) are provided on both sides of the housing (21). A first arc-shaped toothed plate (22) and a second arc-shaped toothed plate (23) are slidably connected inside the housing (21). A gear (24) is rotatably connected inside the housing (21). The gear (24) meshes with the first arc-shaped toothed plate (22) and the second arc-shaped toothed plate (23). The water outlet pipe (3) is installed on one side of the switching component (2) and includes a main pipe (31) and a backup pipe (32). The main pipe (31) and the backup pipe (32) are fixedly connected to a first buckle (31-1) and a second buckle (31-2) on both sides.

2. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 1, characterized in that: The box body (21) has a first limiting groove (21-6) and a second limiting groove (21-7) on both sides, and the first buckle (31-1) and the second buckle (31-2) slide within the first limiting groove (21-6) and the second limiting groove (21-7).

3. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 2, characterized in that: The first limiting groove (21-6) is provided with a third sliding groove (21-61), and the box body (21) is provided with outlet grooves (21-8) on both sides, which are connected to the first limiting groove (21-6) and the third sliding groove (21-61).

4. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 3, characterized in that: The top of the box (21) is provided with a threaded hole (21-5) and is connected to the first arc-shaped toothed plate (22) and the second arc-shaped toothed plate (23). A bolt (25) is installed in the threaded hole (21-5). The bolt (25) is fixedly connected with a thread (25-1) on its surface. The thread (25-1) is engaged with the threaded hole (21-5).

5. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 4, characterized in that: The first arc-shaped toothed plate (22) and the second arc-shaped toothed plate (23) are provided with a first moving groove (22-1) and a second moving groove (23-1) on their surfaces. The box body (21) is fixedly connected with a first limiting post (21-3) and a second limiting post (21-4). The first limiting post (21-3) and the second limiting post (21-4) slide within the first moving groove (22-1) and the second moving groove (23-1).

6. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 5, characterized in that: A first moving block (22-2) and a second moving block (23-2) are fixedly connected to both sides of the first arc-shaped toothed plate (22) and the second arc-shaped toothed plate (23). The first moving block (22-2) and the second moving block (23-2) slide in the first sliding groove (21-1) and the second sliding groove (21-2). A first limiting rod (22-3) is installed on one side of both the first moving block (22-2) and the second moving block (23-2).

7. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 1, characterized in that: The bottom of the first arc-shaped toothed plate (22) and the second arc-shaped toothed plate (23) are both fixedly connected to a baffle plate (22-4). A connecting rod (24-1) is fixedly connected to one side of the gear (24) and extends to the outside of the box (21). A disc (24-2) is fixedly connected to one end of the connecting rod (24-1).

8. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 1, characterized in that: A concave sealing ring (21-9) is installed on one side of the housing (21), and a convex sealing ring (31-4) is installed on one side of the main pipe (31) and the spare pipe (32), which cooperate with the concave sealing ring (21-9).

9. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 1, characterized in that: The first buckle (31-1) has a first limiting block (31-3) slidably connected inside, and the first limiting block (31-3) slides in the third sliding groove (21-61).

10. The backup pipeline switching device for the outlet of a urea circulating pump as described in claim 9, characterized in that: A fixing strip (31-5) is fixedly connected to one side of the first buckle (31-1). A second limiting rod (31-6) is installed at one end of the fixing strip (31-5). A chain (31-7) is sleeved on the surface of the second limiting rod (31-6), and the other end of the chain (31-7) is sleeved on the surface of the first limiting rod (22-3).

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