Urea solution conveying integrated device

Abstract

The utility model discloses a urea solution pump integration device which is characterized in that the urea solution pump integration device comprises an adapter block and a pump assembly, the adapter block is installed at the tail end of the pump assembly, and the pump assembly comprises a first gear, a second gear, a motor, a shell, a magnetic body, a pump upper portion, a pump middle cover, a pump lower portion and an annular support; the first gear, the second gear, the motor, the shell, the magnetic body, the pump upper portion and the pump middle cover are integrated and fixed to the annular support through bolts, the annular support is installed in an inner cavity of the switching block through the pump lower portion, the top of the switching block is further provided with an installation hole for containing the sensor assembly, and the side edge of the switching block is provided with a hole channel. According to the urea solution pump integration device, urea solution can be conveyed to the waste gas pipe from the urea box, a plurality of parts are integrated in the switching block to serve as an independent assembly, the independent assembly is installed on a required component through a limited number of bolts, other parts of the pump assembly do not need to be dismantled when the urea solution pump integration device is dismantled, and assembling and maintaining are convenient.

Description

Technical Field

[0001] The utility model relates to the field of urea solution transportation, and more specifically, to a urea solution transportation integrated device. Background Art

[0002] In order to achieve the increasingly stringent emission regulations for internal combustion engines, it is necessary to reduce harmful substances such as nitrogen oxides in exhaust gas. The post-treatment technology commonly used in the industry is selective catalytic reduction (SCR) technology, which requires the installation of a device that sprays urea solution into the exhaust pipe upstream of the SCR. Urea solution undergoes hydrolysis and pyrolysis in the exhaust pipe to produce ammonia, which reacts chemically with nitrogen oxides to generate pollution-free nitrogen and water, thereby reducing the concentration of harmful substances and achieving the goal of harmless emissions from internal combustion engines.

[0003] The general delivery device obtains urea solution from the urea tank through a low-pressure pipeline, builds pressure through a pump or other means, and then delivers it to the nozzle, which then sprays it into the exhaust pipe, especially the exhaust pipe of a diesel engine, to reduce the nitrogen oxides contained in the exhaust gas. In order to realize the function of delivering urea solution from the urea tank to the exhaust pipe, a universal, efficient, reliable and economical device is urgently needed. Utility Model Content

[0004] In order to achieve these purposes and other advantages according to the utility model, a preferred embodiment of the utility model provides a urea solution pump integrated device, including a transfer block, a pump assembly,

[0005] Wherein, the adapter block is installed at the end of the pump assembly,

[0006] The pump assembly includes a first gear, a second gear, a motor, a housing, a magnetic body, a pump upper part, a pump middle cover, a pump lower part, and an annular bracket;

[0007] The motor is an annular columnar structure that penetrates the inside, the shell is an internally hollow stepped structure, and one end of it is open and the other end is closed, the closed end of the shell is coaxially inserted into the motor, the magnetic body is coaxially inserted into the shell, the upper part of the pump is in the shape of a cover plate, one side of which is sealed on the open end of the shell, the pump middle cover is attached to the other side of the upper part of the pump, a gear hole is opened in the middle of the pump middle cover, the first gear and the second gear are simultaneously installed in the gear hole, the first gear and the second gear are meshed with each other, and the gear shaft of the first gear is connected to the magnetic body;

[0008] The first gear, the second gear, the motor, the housing, the magnetic body, the upper part of the pump, and the middle cover of the pump are integrated into one body and fixed on the annular bracket by bolts. The annular bracket is installed in the internal cavity of the adapter block through the lower part of the pump. The top of the adapter block is also provided with a mounting hole for accommodating the sensor assembly, and the side of the adapter block is provided with a channel.

[0009] Preferably, the adapter block has an inlet channel, a first channel, a return pipe, an outlet pipe, and a second channel, wherein one end of the inlet channel is connected to the urea solution tank, and the other end is vertically connected to the first channel, one end of the return pipe is connected to the gear cavity between the first gear and the second gear, and the other end is vertically connected to the first channel, one end of the outlet pipe is connected to the gear cavity between the first gear and the second gear, and the other end is connected to the second channel, and the second channel leads to the outlet.

[0010] Preferably, the return pipe is also provided with a branch to communicate with the outside.

[0011] Preferably, the first gear is sleeved on the first gear shaft, a gap is provided between the center hole of the first gear and the first gear shaft, a friction pair is formed between the center hole of the first gear and the first gear shaft, and the first gear rotates while the first gear shaft does not rotate.

[0012] Preferably, the second gear is sleeved on the second gear shaft, a gap is provided between the center hole of the second gear and the second gear shaft, a friction pair is formed between the center hole of the second gear and the second gear shaft, and the second gear rotates while the second gear shaft does not rotate.

[0013] Preferably, the motor is connected to a controller to drive the motor.

[0014] Preferably, the sensor component is a temperature sensor or a pressure sensor.

[0015] The utility model includes at least the following beneficial effects: the urea solution pump integrated device of the utility model can transport urea solution from the urea tank to the exhaust pipe, and a plurality of components are integrated in the adapter block. As an independent component, the pump and other parts can be installed on the required components through a limited number of bolts. When removing the component, there is no need to remove other parts of the pump component, which is convenient for assembly and maintenance.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the urea solution pump integrated device in the utility model.

[0018] Figure 2 It is a schematic diagram of the explosion of the urea solution pump integrated device in the utility model.

[0019] Figure 3 It is a cross-sectional schematic diagram of the urea solution pump integrated device in the utility model.

[0020] Figure 4 It is a cross-sectional schematic diagram of the transfer block in the utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0022] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] like Figure 1-4 As shown, a preferred embodiment of the utility model provides a urea solution pump integrated device, including a transfer block 4, a pump assembly 3,

[0026] The adapter block 4 is installed at the end of the pump assembly 3.

[0027] The pump assembly 3 includes a first gear 11, a second gear 12, a motor 10, a housing 9, a magnetic body 8, a pump upper part 7, a pump middle cover 6, a pump lower part 5, and an annular bracket 1;

[0028] The motor 10 is an annular columnar structure that penetrates the inside, the shell 9 is an internally hollow stepped structure, and one end of it is open and the other end is closed, the closed end of the shell is coaxially inserted into the motor 10, the magnetic body 8 is coaxially inserted into the shell 9, the pump upper part 7 is in the shape of a cover plate, one side of which is sealed on the open end of the shell 9, the pump middle cover 6 is attached to the other side of the pump upper part 7, a gear hole is opened in the middle of the pump middle cover 6, the first gear 11 and the second gear 12 are simultaneously installed in the gear hole, the first gear 11 and the second gear 12 are meshed with each other, and the gear shaft of the first gear 11 is connected to the magnetic body 8;

[0029] The first gear 11, the second gear 12, the motor 10, the housing 9, the magnetic body 8, the pump upper part 7, and the pump middle cover 6 are integrated into one body and fixed on the annular bracket 1 by bolts. The annular bracket 1 is installed in the internal cavity of the adapter block 4 through the pump lower part 5. The top of the adapter block 4 is also provided with a mounting hole 17 for accommodating the sensor assembly 2, and the side of the adapter block 4 is provided with a channel 18.

[0030] In the above technical solution, the first gear 11, the second gear 12, the motor 10, the housing 9, the magnetic body 8, the pump upper part 7, and the pump middle cover 6 are integrated into one, fixed on the annular bracket 1, and then installed as a whole in the adapter block 4. After the installation is completed, the adapter block 4 with multiple components integrated is used as an independent component. The pump and other parts can be installed on the required components through a limited number of bolts. When dismantling the component, there is no need to dismantle other parts of the pump component, which is convenient for assembly and maintenance.

[0031] In another technical solution, the adapter block 4 has an inlet channel 13, a first channel 14, a reflux pipe 15, an outlet pipe 16, and a second channel 18, wherein one end of the inlet channel 13 is connected to the urea solution tank, and the other end is vertically connected to the first channel 14, one end of the reflux pipe 15 is connected to the gear cavity between the first gear 11 and the second gear 12, and the other end is vertically connected to the first channel 14, one end of the outlet pipe 16 is connected to the gear cavity between the first gear 11 and the second gear 12, and the other end is connected to the second channel 18, and the second channel 18 leads to the outlet.

[0032] In the above technical solution, the motor 10 generates a changing current, thereby generating an electromagnetic field, driving the magnetic body 8 to rotate, and then driving the first gear 11 to rotate, and then driving the second gear 12 to rotate. As the first gear and the second gear rotate, a negative pressure is generated in the gear cavity between the first gear 11 and the second gear 12. Under the action of the negative pressure, the urea solution flows in through the inlet channel 13, enters the gear cavity, and then is input into the exhaust pipe of the engine through the outlet pipe 16. In this way, the low-pressure urea solution can be sucked from the inlet channel 13, and after the pressure is established by the gear pump, it is transported to the second channel 18, and then connected to the external pipeline through a joint, thereby realizing the transportation function of the urea solution.

[0033] At the same time, the urea solution can also be recycled into the urea tank via the reflux pipe 15 to return the excess urea solution to the urea solution tank, and the excess urea solution can also play a cooling role.

[0034] In another technical solution, the return pipe 15 is further provided with a branch to connect to the outside.

[0035] In another technical solution, the first gear 11 is sleeved on the first gear shaft, and there is a gap between the center hole of the first gear 11 and the first gear shaft. The urea solution can enter the gap to play a lubricating role. A friction pair is formed between the center hole of the first gear 11 and the first gear shaft, and the first gear 11 rotates while the first gear shaft does not rotate.

[0036] The second gear 12 is sleeved on the second gear shaft, and there is a gap between the center hole of the second gear 12 and the second gear shaft. Urea solution can enter the gap to play a lubricating role. A friction pair is formed between the center hole of the second gear 12 and the second gear shaft. The second gear 12 rotates while the second gear shaft does not rotate.

[0037] In another technical solution, the motor is connected to a controller to drive the motor, so that the controller can be used to control and drive the entire pump structure to achieve the urea solution delivery function.

[0038] In another technical solution, the sensor component 2 is a temperature sensor or a pressure sensor for real-time monitoring of the pressure or temperature at the outlet.

[0039] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A urea solution transport integrated device, characterized in that: Including adapter block, pump assembly, Wherein, the adapter block is installed at the end of the pump assembly, The pump assembly includes a first gear, a second gear, a motor, a housing, a magnetic body, a pump upper part, a pump middle cover, a pump lower part, and an annular bracket; The motor is an annular columnar structure that penetrates the inside, the shell is an internally hollow stepped structure, and one end of it is open and the other end is closed, the closed end of the shell is coaxially inserted into the motor, the magnetic body is coaxially inserted into the shell, the upper part of the pump is in the shape of a cover plate, one side of which is sealed on the open end of the shell, the pump middle cover is attached to the other side of the upper part of the pump, a gear hole is opened in the middle of the pump middle cover, the first gear and the second gear are simultaneously installed in the gear hole, the first gear and the second gear are meshed with each other, and the gear shaft of the first gear is connected to the magnetic body; The first gear, the second gear, the motor, the housing, the magnetic body, the upper part of the pump, and the middle cover of the pump are integrated into one body and fixed on the annular bracket by bolts. The annular bracket is installed in the internal cavity of the adapter block through the lower part of the pump. The top of the adapter block is also provided with a mounting hole for accommodating the sensor assembly, and the side of the adapter block is provided with a channel.

2. The urea solution transport integrated device according to claim 1, characterized in that: The adapter block has an inlet channel, a first channel, a return pipe, an outlet pipe, and a second channel inside, wherein one end of the inlet channel is connected to the urea solution tank, and the other end is vertically connected to the first channel, one end of the return pipe is connected to the gear cavity between the first gear and the second gear, and the other end is vertically connected to the first channel, one end of the outlet pipe is connected to the gear cavity between the first gear and the second gear, and the other end is connected to the second channel, and the second channel leads to the outlet.

3. The urea solution transport integrated device according to claim 2, characterized in that: The return pipe is also provided with a branch to communicate with the outside world.

4. The urea solution transport integrated device according to claim 2, characterized in that: The first gear is sleeved on the first gear shaft, there is a gap between the center hole of the first gear and the first gear shaft, a friction pair is formed between the center hole of the first gear and the first gear shaft, the first gear rotates while the first gear shaft does not rotate.

5. The urea solution transport integrated device according to claim 2, characterized in that: The second gear is sleeved on the second gear shaft, a gap is provided between the center hole of the second gear and the second gear shaft, a friction pair is formed between the center hole of the second gear and the second gear shaft, and the second gear rotates while the second gear shaft does not rotate.

6. The urea solution transport integrated device according to claim 2, characterized in that: The motor is connected to a controller to drive the motor.

7. The urea solution transport integrated device according to claim 2, characterized in that: The sensor component is a temperature sensor or a pressure sensor.

Images