A urea quality sensor plastic head

Abstract

A urea quality sensor plastic head, including upper plastic head and lower plastic head, upper plastic head one side is provided with outwardly extending urea liquid suction connector port, urea liquid return connector port, cooling water pipe connector port and water cut solenoid valve mounting seat respectively, the other side surface center of upper plastic head is provided with inner groove for placing upper cover, the lower surface of lower plastic head is provided with chuck seat, chuck seat is provided with multiple connecting holes. The utility model discloses simple structure, convenient to assemble, only need relevant insert and steel sleeve to place in the corresponding position of mould, can manufacture the sensor plastic head with liquid suction connector port, urea liquid return connector port, cooling water pipe connector port, water cut solenoid valve mounting seat, first chamber and second chamber, better satisfy product demand, effectively guarantee the practicability of plastic head.

Description

Technical Field

[0001] This utility model relates to the field of automotive urea detection technology, specifically a plastic head for a urea quality sensor. Background Technology

[0002] Currently, most pipeline components on the market, such as urea suction pipe connectors, urea return pipe connectors, and cooling water pipe connectors, need to be integrated and installed on the plastic head of the urea quality sensor. There are two common installation methods: one is to use a threaded connection to fix the component to the plastic head; however, due to the large number of pipeline components, this method results in slow assembly speed. The other is to use a plug-in connection to insert the component into the plastic head; however, the plug-in structure lacks stability and is prone to causing pipeline components to come loose. Furthermore, most plastic heads currently on the market lack a filter element structure, thus failing to filter the urea and antifreeze flowing into the internal pipeline. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to provide a plastic head for a urea quality sensor.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a plastic head for a urea quality sensor, comprising an upper plastic head and a lower plastic head. The upper plastic head has an outwardly extending urea suction port, a urea return port, a cooling water pipe port, and a water shut-off solenoid valve mounting seat on one side. The other side of the upper plastic head has an inner groove for placing the upper cover at its center. The lower surface of the lower plastic head has a chuck seat with multiple connection holes inside.

[0005] Furthermore, a urea suction end steel sleeve is provided inside the urea suction connector, and the urea suction connector is connected to the first chamber inside the upper plastic head. The first chamber is connected to the urea suction port provided on the lower surface of the chuck seat through an internal pipe.

[0006] Furthermore, a cooling water pipe end steel sleeve is fitted inside the cooling water pipe connector, and the cooling water pipe connector is connected to the second chamber. The second chamber is connected to the antifreeze suction port provided on the lower surface of the chuck seat through an internal pipe.

[0007] Furthermore, a urea return end steel sleeve is provided inside the cold urea return connector. The cold urea return connector is connected to the urea return port through an internal pipe. Multiple points on the water shut-off solenoid valve mounting base on the upper plastic head are respectively inlaid with inserts for fixing the water shut-off solenoid valve. The inner hole of the water shut-off solenoid valve mounting base is connected to the heating discharge port on the lower plastic head through an internal pipe.

[0008] Furthermore, multiple inverted U-shaped chuck seats are distributed on the outer wall of the lower plastic head's outer cylinder, and the cross-sectional thickness of the chuck seats gradually increases from bottom to top.

[0009] Furthermore, the chuck seat of the lower plastic head has crisscrossing reinforcing ribs distributed in the internal grooves, and the reinforcing ribs are integrally connected to the outer wall of each connecting hole.

[0010] Furthermore, a sealing ring groove is formed on the outer cylindrical outer ring of the lower plastic head, and a positioning groove is formed on the inner side wall of the sealing ring groove.

[0011] With the above settings, compared with the prior art, this utility model combines the urea liquid suction port, urea liquid return port, cooling water pipe port and water shut-off solenoid valve mounting base into one piece through injection molding, eliminating the assembly process, improving efficiency and simplifying operation. The first chamber and the second chamber are left on the plastic head, which facilitates the installation of the filter device and improves the utilization rate of the plastic head.

[0012] This utility model has a simple structure and is easy to assemble. Only the relevant inserts and steel sleeves need to be placed in the corresponding positions of the mold to manufacture a sensor plastic head with a liquid suction port, a urea return port, a cooling water pipe port, a water shut-off solenoid valve mounting seat, a first chamber and a second chamber, which can better meet product requirements and effectively ensure the practicality of the plastic head. Attached Figure Description

[0013] The present invention will now be further described with reference to the accompanying drawings.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of one side of the chamber of this utility model; Figure 3 This is a top view cross-sectional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention viewed from below. Detailed Implementation

[0015] like Figure 1-4 As shown, a urea quality sensor plastic head includes an upper plastic head and a lower plastic head. One side of the upper plastic head is provided with an outwardly extending urea suction port 1, a urea return port 2, a cooling water pipe port 3, and a water shut-off solenoid valve mounting seat 4. The center of the surface of the other side of the upper plastic head is provided with an inner groove 5 for placing the upper cover. The lower surface of the lower plastic head is provided with a chuck seat 67. The chuck seat 67 is provided with multiple connection holes, namely, the connection holes in the chuck seat 67 include an antifreeze suction port 60, a heating discharge port 61, a urea suction port 62, a quality sensor assembly port 63, an electron tube assembly port 64, and a urea return port 65.

[0016] Specific configuration: A urea suction end steel sleeve 8 is provided inside the urea suction connector 1. The urea suction connector 1 is connected to the first chamber 6 inside the upper plastic head. The first chamber 6 is connected to the urea suction port 62 provided on the lower surface of the chuck seat 67 through an internal pipe. A cooling water pipe end steel sleeve 9 is fitted inside the cooling water pipe connector 3. The cooling water pipe connector 3 is connected to the second chamber 7. The second chamber 7 is connected to the antifreeze suction port 60 provided on the lower surface of the chuck seat 67 through an internal pipe. A urea return end steel sleeve 10 is provided inside the cold urea return connector 2. The cold urea return connector 2 is connected to the urea return port 65 through an internal pipe. Inserts 11 are embedded at multiple points on the water shut-off solenoid valve mounting base 4 on the upper plastic head to fix the water shut-off solenoid valve. The inner hole of the water shut-off solenoid valve mounting base 4 is connected to the heating discharge port 61 on the lower plastic head through an internal pipe.

[0017] In addition, multiple inverted U-shaped chuck seats 67 are distributed on the outer wall of the lower plastic head outer cylinder 68, and the cross-sectional thickness of the chuck seat 67 gradually increases from bottom to top. The internal groove of the chuck seat 67 of the lower plastic head has crisscrossing reinforcing ribs 66. The reinforcing ribs 66 are integrally connected with the outer wall of each connecting hole, which can effectively fix each cylindrical groove, play a reinforcing role, and improve the support strength. The outer ring of the lower plastic head outer cylinder 68 is provided with a sealing ring groove 70, and the inner ring side wall of the sealing ring groove 70 is provided with a positioning groove 69.

[0018] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A urea quality sensor plastic tip comprising an upper plastic tip and a lower plastic tip, characterized by: The upper plastic head has an outwardly extending urea suction port (1), urea return port (2), cooling water pipe port (3) and water shut-off solenoid valve mounting seat (4) on one side. The upper plastic head has an inner groove (5) for placing the upper cover at the center of the other side surface. The lower plastic head has a chuck seat (67) on the lower surface. The chuck seat (67) has multiple connection holes.

2. A plastic tip for a urea quality sensor as defined in claim 1, characterized in that: The inner end of the urea suction connector (1) is provided with a urea suction end steel sleeve (8). The urea suction connector (1) is connected to the first chamber (6) inside the upper plastic head. The first chamber (6) is connected to the urea suction port (62) provided on the lower surface of the chuck seat (67) through an internal pipe.

3. A plastic tip for a urea quality sensor as defined in claim 1, characterized in that: The cooling water pipe connector (3) is fitted with a cooling water pipe end steel sleeve (9). The cooling water pipe connector (3) is connected to the second chamber (7). The second chamber (7) is connected to the antifreeze suction port (60) provided on the lower surface of the chuck seat (67) through an internal pipe.

4. A plastic tip for a urea quality sensor as defined in claim 1, characterized in that: A urea return end steel sleeve (10) is provided inside the cold urea return connector (2). The cold urea return connector (2) is connected to the urea return port (65) through an internal pipe. Multiple points of the water shut-off solenoid valve mounting seat (4) on the upper plastic head are respectively inlaid with inserts (11) for fixing the water shut-off solenoid valve. The inner hole of the water shut-off solenoid valve mounting seat (4) is connected to the heating discharge port (61) on the lower plastic head through an internal pipe.

5. A plastic tip for a urea quality sensor as defined in claim 1, wherein: Multiple inverted U-shaped chuck seats (67) are distributed on the outer wall of the lower plastic head outer cylinder (68), and the cross-sectional thickness of the chuck seat (67) gradually increases from bottom to top.

6. A plastic tip for a urea quality sensor as defined in claim 1, characterized in that: The chuck seat (67) of the lower plastic head has crisscrossing reinforcing ribs (66) inside the groove, and the reinforcing ribs (66) are integrally connected to the outer wall of each connecting hole.

7. The plastic head of a urea quality sensor as described in claim 6, characterized in that: The outer cylinder (68) of the lower plastic head has a sealing ring groove (70) on its outer ring, and a positioning groove (69) is provided on the inner side wall of the sealing ring groove (70).

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