A urea nozzle cooling and heat insulation mounting sleeve

Abstract

The utility model discloses a urea nozzle cooling heat insulation mounting sleeve specifically relates to internal combustion engine exhaust treatment technical field, including cooling installation support and setting the urea nozzle of cooling installation support inboard, and the one side of cooling installation support is provided with electric plug, and the top of cooling installation support is connected with the water inlet pipe and water outlet pipe, and sets up the locating plate between cooling installation support and water inlet pipe and water outlet pipe. The utility model discloses utilize the heat shield inner side cavity and three openings to form the heat insulation zone, prevent high heat component and pass through heat conduction and directly heat transfer to urea nozzle, and the air flow in heat shield inner air flow carries away the accumulated heat, and the cooling water circulation flow of cooling installation support is combined, and durable heat insulation protection is provided for urea nozzle, utilizes the multiple different openings of cooling installation support inboard, heat insulation pipe and slot formation multiple air cut-off, reduces the heat transfer flow smoothness, and further improves its heat insulation effect to urea nozzle.

Description

Technical Field

[0001] This utility model relates to the field of internal combustion engine exhaust gas treatment technology, and more specifically, to a urea nozzle cooling and heat insulation mounting sleeve. Background Technology

[0002] Selective catalytic reduction (SCR) is currently recognized as one of the most effective after-treatment technologies for reducing NOx emissions from automotive internal combustion engines. It involves injecting a certain amount of urea aqueous solution into the engine exhaust pipe. The urea aqueous solution then undergoes evaporation, pyrolysis, and hydrolysis to obtain the reducing agent NH3. Under the action of a catalyst, NH3 undergoes a selective catalytic reduction reaction to reduce NOx to N2, thereby achieving the goal of reducing the NOx content in the exhaust.

[0003] In actual use, a heat shield acts as a barrier between the engine and the urea nozzle to prevent heat from directly contacting the urea nozzle. However, under continuous heating, the heat shield itself will continue to accumulate inside the heat shield. When too much heat accumulates inside the heat shield, its own heat will also transfer to the urea nozzle, affecting the performance of the urea nozzle. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a urea nozzle cooling and heat insulation mounting sleeve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A urea nozzle cooling and heat insulation mounting sleeve includes a cooling mounting bracket and a urea nozzle disposed inside the cooling mounting bracket. An electrical plug is provided on one side of the cooling mounting bracket. An inlet pipe and an outlet pipe are connected to the top of the cooling mounting bracket. A positioning plate is disposed between the cooling mounting bracket and the inlet and outlet pipes. A heat-conducting mechanism is fixedly connected to one side of the positioning plate. The heat-conducting mechanism includes a heat-shielding plate disposed on the upper surface of the positioning plate. A cavity is formed inside the heat-shielding plate, and openings are formed on both sides and the top of the heat-shielding plate, with the three openings communicating with the cavity. Multiple baffles are fixedly connected inside the openings on both sides of the heat-shielding plate, and the multiple baffles are all inclined downwards. A heat insulation plate is fixedly connected to one side of the heat-shielding plate. Multiple air holes are formed inside the heat insulation plate, and the multiple air holes are evenly distributed on the surface of the heat insulation plate. A rubber strip is fixedly connected to one side of the heat insulation plate. A heat insulation component is disposed inside the cooling mounting bracket.

[0007] By adopting the above technical solution, the airflow inside the heat shield is achieved by utilizing the cavity and three openings on the inner side of the heat shield, thereby preventing heat from accumulating inside the heat shield and enabling the heat shield to continuously guide and block heat.

[0008] As a further description of the above technical solution: the heat insulation component includes multiple openings of different diameters formed inside the cooling mounting bracket, and the multiple openings are evenly distributed inside the cooling mounting bracket. A heat insulation tube is sleeved inside the cooling mounting bracket. Multiple slots are formed on the outer surface of the heat insulation tube, and the slots are evenly distributed from top to bottom on the surface of the heat insulation tube. A mounting cover is provided on the top of the cooling mounting bracket. The cooling mounting bracket and the mounting cover are connected by bolts. Two positioning posts are fixedly connected to the bottom of the mounting cover, and the two positioning posts are symmetrically distributed on the lower surface of the mounting cover. The bottom of the positioning posts is arc-shaped, and the ends of the two positioning posts are inserted into the two openings on the upper surface of the cooling mounting bracket. The water inlet pipe and the water outlet pipe are symmetrically distributed on one side of the cooling mounting bracket, and multiple baffles are evenly distributed inside the two openings.

[0009] By adopting the above technical solution, the heat on the outside of the cooling mounting bracket is blocked by using multiple openings inside the cooling mounting bracket, as well as heat insulation pipes and multiple slots connected between the cooling mounting bracket and the urea nozzle.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. By setting up a heat conduction mechanism, compared with the existing technology, a heat insulation zone is formed by using the inner cavity of the heat baffle plate and three openings to prevent high-heat components such as the engine or exhaust manifold from directly transferring heat to the urea nozzle through heat conduction. In addition, there is air flow inside the heat baffle plate. The flowing air continuously carries away the heat accumulated in the cavity, ensuring that the inner side of the heat baffle plate is kept at a relatively low temperature and avoiding excessive heat transfer. Combined with the cooling water circulation of the cooling mounting bracket itself, this provides long-lasting heat insulation protection for the urea nozzle.

[0012] 2. By setting up heat insulation components, compared with the existing technology, by using multiple different openings, heat insulation pipes and slots on the inner side of the cooling mounting bracket, multiple air barriers can be formed inside the cooling mounting bracket, reducing the smoothness of heat transfer through the cooling mounting bracket, thereby improving the heat insulation effect of the cooling mounting bracket on the urea nozzle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the heat shield of this utility model.

[0016] Figure 4This is a partial schematic diagram of the connection between the cooling mounting bracket and the heat insulation pipe of this utility model.

[0017] Figure 5 This is a schematic diagram of the top structure of the cooling mounting bracket of this utility model.

[0018] Figure 6 This is a schematic diagram of the outer side of the heat insulation pipe of this utility model.

[0019] Figure 7 This is a partial schematic diagram of the connection between the mounting cover and the positioning post of this utility model.

[0020] The attached diagram is labeled as follows: 1. Cooling mounting bracket; 2. Urea nozzle; 3. Electrical plug; 4. Water inlet pipe; 5. Water outlet pipe; 6. Positioning plate; 7. Heat shield; 8. Cavity; 9. Opening; 10. Baffle; 11. Heat insulation plate; 12. Rubber strip; 13. Opening; 14. Heat insulation pipe; 15. Groove; 16. Mounting cover; 17. Positioning post. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The embodiments disclosed in this application are as follows: Figures 1-7 The urea nozzle cooling and heat insulation mounting sleeve shown includes a cooling mounting bracket 1 and a urea nozzle 2 disposed inside the cooling mounting bracket 1. An electrical plug 3 is provided on one side of the cooling mounting bracket 1. An inlet pipe 4 and an outlet pipe 5 are connected to the top of the cooling mounting bracket 1. A positioning plate 6 is disposed between the cooling mounting bracket 1 and the inlet pipe 4 and outlet pipe 5. A heat-conducting mechanism is fixedly connected to one side of the positioning plate 6. The heat-conducting mechanism includes a heat-shielding plate 7 disposed on the upper surface of the positioning plate 6. A cavity 8 is formed inside the heat-shielding plate 7, and openings 9 are formed on both sides and the top of the heat-shielding plate 7. The three openings 9 communicate with the cavity 8. The openings 9 on both sides of the heat-shielding plate 7 are fixedly connected to... There are multiple baffles 10, all of which are inclined downwards; a heat insulation plate 11 is fixedly connected to one side of the heat shield 7, and multiple air holes are opened on the inner side of the heat insulation plate 11, which are evenly distributed on the surface of the heat insulation plate 11. A rubber strip 12 is fixedly connected to one side of the heat insulation plate 11. Preferably, the rubber strip 12 is made of heat-resistant material; a heat insulation component is provided inside the cooling mounting bracket 1. Air circulation is formed inside the heat shield 7 through the cavity 8 inside the heat shield 7 and the three openings 9, which reduces the continuous accumulation of heat inside the heat shield 7. Thus, the heat shield 7 can continuously block the heat of the engine and prevent the heat from directly affecting the urea nozzle 2.

[0023] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the heat insulation component includes multiple openings 13 of different diameters formed inside the cooling mounting bracket 1, and the multiple openings 13 are evenly distributed inside the cooling mounting bracket 1. A heat insulation tube 14 is sleeved inside the cooling mounting bracket 1, and multiple slots 15 are formed on the outer surface of the heat insulation tube 14, which are evenly distributed from top to bottom on the surface of the heat insulation tube 14. A mounting cover 16 is provided on the top of the cooling mounting bracket 1, and the cooling mounting bracket 1 and the mounting cover 16 are connected by bolts. Two positioning posts 17 are fixedly connected to the bottom of the mounting cover 16, and the two positioning posts 17 are symmetrically distributed on the lower surface of the mounting cover 16. The bottom of the positioning posts 17 is arc-shaped, and the ends of the two positioning posts 17 are connected to two openings on the upper surface of the cooling mounting bracket 1. The 13 openings are connected by an inlet pipe 4 and an outlet pipe 5, which are symmetrically distributed on one side of the cooling mounting bracket 1. Multiple baffles 10 are evenly distributed inside the two openings 9. The positioning pins 17 at the bottom of the mounting cover 16 with the two openings 13 on the upper surface of the cooling mounting bracket 1 can guide the mounting cover 16 and the cooling mounting bracket 1 to be directly aligned and pre-positioned, thereby improving the positioning accuracy of the urea nozzle 2 by the cooling mounting bracket 1 and the mounting cover 16. Multiple openings 13 of different diameters are evenly distributed inside the cooling mounting bracket 1. Combined with the heat insulation pipe 14 and multiple slots 15 on its outer surface, a double heat conduction layer is formed inside the cooling mounting bracket 1, thereby improving the heat insulation effect of the cooling mounting bracket 1.

[0024] The working principle of this utility model is as follows: When installing and using the urea nozzle 2, the inlet and outlet pipes of the external cooling circulating water pipe are connected to the inlet pipe 4 and outlet pipe 5 respectively. Then, the urea delivery pipe is connected to the top of the urea nozzle 2. Then, the cooling mounting bracket 1 is connected to the engine housing by bolts through the connection hole at the bottom of the cooling mounting bracket 1. The heat shield 7 on one side of the cooling mounting bracket 1 is brought close to the engine housing and the cooling mounting bracket 1 to block the heat of the engine.

[0025] The heat shield 7 uses the heat insulation plate 11 and rubber strip 12 on one side to adhere to the engine surface. Then, the heat will enter the cavity 8 inside the heat shield 7 through multiple air holes on the surface of the heat insulation plate 11. Then, the heat will be output to the outside through the openings 9 on both sides and the top of the heat shield 7, which can keep the cavity 8 in a state of air circulation, thereby effectively reducing the impact of heat on the use of the cooling mounting bracket 1 and urea nozzle 2.

[0026] It is worth noting that by using an external cooling circulating water pipe, cooling water enters from one end of the inlet pipe 4 and flows inside the cooling mounting bracket 1, and then is output through the outlet pipe 5 on one side of the cooling mounting bracket 1. In this process, the heat inside the cooling mounting bracket 1 is carried out. With the continuous circulation of water, the heat insulation effect of the cooling mounting bracket 1 is improved while the urea nozzle 2 is kept in continuous and effective use.

[0027] Meanwhile, by utilizing multiple openings 13 of different diameters on the inner side of the cooling mounting bracket 1, the cooling mounting bracket 1 has multiple end faces, which interrupts the continuity of heat transfer inside the cooling mounting bracket 1. Combined with the heat insulation tube 14 sleeved on the inner side of the cooling mounting bracket 1, it effectively blocks external heat. It is worth noting that by utilizing multiple slots 15 on the outer surface of the heat insulation tube 14, the heat insulation effect is further improved, reducing the impact of engine high temperature on urea nozzle 2, thereby improving the service life of urea nozzle 2.

[0028] Furthermore, by using the two arc-shaped positioning posts 17 at the bottom of the mounting cover 16, the mounting cover 16 and the cooling mounting bracket 1 can be aligned and installed together. The ends of the two positioning posts 17 are guided and inserted into the openings of the two corresponding holes 13 on the top of the cooling mounting bracket 1, so that the mounting cover 16 and the cooling mounting bracket 1 can be directly aligned, avoiding subsequent positional adjustments.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A urea nozzle cooling and heat insulation mounting sleeve, comprising a cooling mounting bracket (1) and a urea nozzle (2) disposed inside the cooling mounting bracket (1), wherein an electrical plug (3) is provided on one side of the cooling mounting bracket (1), and an inlet pipe (4) and an outlet pipe (5) are connected to the top of the cooling mounting bracket (1), characterized in that: A positioning plate (6) is provided between the cooling mounting bracket (1) and the water inlet pipe (4) and the water outlet pipe (5), and a heat conduction mechanism is fixedly connected to one side of the positioning plate (6); The heat conduction mechanism includes a heat shield (7) disposed on the upper surface of the positioning plate (6), a cavity (8) is provided on the inner side of the heat shield (7), and openings (9) are provided on both sides and the top of the heat shield (7), and the three openings (9) are connected to the cavity (8). Multiple baffles (10) are fixedly connected inside the openings (9) on both sides of the heat shield (7), and the multiple baffles (10) are all inclined downwards; A heat insulation plate (11) is fixedly connected to one side of the heat shield (7). Multiple air holes are opened on the inner side of the heat insulation plate (11), and the multiple air holes are evenly distributed on the surface of the heat insulation plate (11). A rubber strip (12) is fixedly connected to one side of the heat insulation plate (11). The cooling mounting bracket (1) has a heat insulation component on its inner side.

2. The urea nozzle cooling and heat insulation mounting sleeve according to claim 1, characterized in that: The heat insulation component includes a plurality of openings (13) of different diameters formed on the inner side of the cooling mounting bracket (1), and the plurality of openings (13) are evenly distributed on the inner side of the cooling mounting bracket (1).

3. The urea nozzle cooling and heat insulation mounting sleeve according to claim 1, characterized in that: The cooling mounting bracket (1) is fitted with a heat insulation tube (14) on its inner side. The outer surface of the heat insulation tube (14) is provided with multiple slots (15), which are evenly distributed from top to bottom on the surface of the heat insulation tube (14).

4. The urea nozzle cooling and heat insulation mounting sleeve according to claim 1, characterized in that: The cooling mounting bracket (1) is provided with a mounting cover (16) on top, and the cooling mounting bracket (1) and the mounting cover (16) are connected by bolts.

5. The urea nozzle cooling and heat insulation mounting sleeve according to claim 4, characterized in that: The bottom of the mounting cover (16) is fixedly connected to two positioning posts (17), and the two positioning posts (17) are symmetrically distributed on the lower surface of the mounting cover (16).

6. The urea nozzle cooling and heat insulation mounting sleeve according to claim 5, characterized in that: The bottom of the positioning post (17) is arc-shaped, and the ends of the two positioning posts (17) are inserted into the two openings (13) on the upper surface of the cooling mounting bracket (1).

7. The urea nozzle cooling and heat insulation mounting sleeve according to claim 1, characterized in that: The inlet pipe (4) and outlet pipe (5) are symmetrically distributed on one side of the cooling mounting bracket (1), and multiple baffles (10) are evenly distributed inside the two openings (9).

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