Liquid discharging device for automotive urea tank truck

Abstract

The utility model relates to the technical field of urea tank truck equipment, in particular to a liquid unloading device for a vehicle urea tank truck, which comprises an input port, a filter, a liquid unloading pump, an electromagnetic valve and an output port which are sequentially connected through a pipeline, a liquid inlet valve is arranged on the upper portion of the shell, a liquid outlet valve is arranged on the lower portion of the shell, and an electric heating wire is arranged on the inner wall of the shell. The device solves the problems that a traditional liquid discharging device cannot reduce urea crystals and does not have a self-cleaning function.

Description

Technical Field

[0001] This utility model relates to the technical field of urea tanker truck equipment, and specifically to an unloading device for urea tanker trucks. Background Technology

[0002] Urea tanker trucks are vehicles specifically designed for transporting and distributing liquid urea solution, primarily used in the emission control systems of diesel vehicles. The urea solution (typically a 32.5% mixture of urea and water) is used in selective catalytic reduction (SCR) technology to reduce nitrogen oxide (NOx) emissions from diesel engines, helping vehicles meet environmental standards. Urea tanker trucks require unloading devices to transfer the urea solution from the tanker to storage facilities or other containers.

[0003] During the unloading process, some impurities such as metal particles and urea crystals will be mixed in the urea solution. Although the filters of the existing unloading device can intercept impurities, they cannot dissolve urea crystals or perform self-cleaning, which leads to waste of raw materials or blockage of the device. Therefore, it is necessary to develop an unloading device that can reduce urea crystals and has a self-cleaning function. Utility Model Content

[0004] The purpose of this invention is to provide a liquid unloading device for urea tank trucks, which solves the problems of traditional liquid unloading devices being unable to reduce urea crystals and lacking self-cleaning function.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a liquid unloading device for urea tank trucks, including an inlet, a filter, a liquid unloading pump, a solenoid valve and an outlet connected in sequence by pipelines. The filter includes a housing and a filter screen, the filter screen is disposed inside the housing, the upper part of the housing is provided with an inlet valve and the lower part with an outlet valve, and the inner wall of the housing is provided with a heating wire.

[0007] Furthermore, a first backflush valve is provided on the upper side of the housing, a second backflush valve is provided on the lower side of the housing, and the filter screen is located between the first backflush valve and the second backflush valve.

[0008] Furthermore, a flow meter is provided between the solenoid valve and the output port.

[0009] Furthermore, both the input and output ports are high-speed interfaces.

[0010] Furthermore, the solenoid valve is a pulse solenoid valve.

[0011] Furthermore, the flow meter is an electromagnetic flow meter.

[0012] Technical effects of this utility model:

[0013] Compared with the prior art, the unloading device for urea tank trucks involved in this utility model heats the urea solution in the filter by setting an electric heating wire, thereby promoting the dissolution of urea crystals, greatly reducing the formation of urea crystals, strengthening the protection of the unloading pipeline, and reducing the waste of raw materials; by setting a first backflushing valve and a second backflushing valve to backflush the filter, the filter can complete self-cleaning, avoiding clogging of the device and reducing the maintenance cost of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the filter in this utility model;

[0016] Figure 3 This utility model Figure 2 A longitudinal sectional view.

[0017] in:

[0018] 1. Inlet; 2. Filter; 3. Unloading pump; 4. Solenoid valve; 5. Flow meter; 6. Outlet; 21. Housing; 22. Inlet valve; 23. Outlet valve; 24. First backflush valve; 25. Second backflush valve; 26. Heating wire; 27. Filter screen. Detailed Implementation

[0019] 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.

[0020] Example:

[0021] like Figure 1-3As shown in this embodiment, an unloading device for a urea tanker truck includes an inlet 1, a filter 2, an unloading pump 3, a solenoid valve 4, a flow meter 5, and an outlet 6 connected sequentially via pipelines. Both inlet 1 and outlet 6 are quick-connect interfaces. The solenoid valve 4 is a pulse solenoid valve, and the flow meter 5 is an electromagnetic flow meter. During urea unloading, inlet 1 is connected to the urea tanker truck, and then the unloading pump 3 is started. The urea solution is output from the urea tanker truck and flows sequentially through inlet 1, filter 2, unloading pump 3, solenoid valve 4, flow meter 5, and outlet 6 into the urea storage facility. The filter 2 includes a housing. The filter 21 and filter screen 27 are used to intercept impurities in the urea solution. The filter screen 27 is set inside the housing 21. The upper part of the housing 21 is provided with an inlet valve 22 and the lower part with an outlet valve 23. The inner wall of the housing 21 is provided with an electric heating wire 26. The electric heating wire 26 is used to heat the urea solution in the housing 21, thereby promoting the dissolution of urea crystals and reducing the formation of urea crystals. By setting the electric heating wire 26, the urea solution in the filter 2 is heated, thereby promoting the dissolution of urea crystals, greatly reducing the formation of urea crystals, strengthening the protection of the unloading pipeline, and reducing the waste of raw materials.

[0022] The upper side of the housing 21 is provided with a first backwash valve 24, and the lower side of the housing 21 is provided with a second backwash valve 25. The filter screen 27 is located between the first backwash valve 24 and the second backwash valve 25. The first backwash valve 24 and the second backwash valve 25 are used to backwash the filter 2, thereby completing the self-cleaning of the filter 2.

[0023] Working principle

[0024] During unloading, the first backflush valve 24 and the second backflush valve 25 are closed. The inlet 1 is connected to the urea tank truck, and then the unloading pump 3 is started. The urea solution is output from the urea tank truck and flows sequentially through the inlet 1, filter 2, unloading pump 3, solenoid valve 4, flow meter 5, and outlet 6 into the urea storage facility. When the urea solution flows through the filter 2, the heating wire 26 is activated to heat the urea solution in the shell 21, thereby promoting the dissolution of urea crystals and reducing the formation of urea crystals. After unloading is completed, the inlet valve 22 and the outlet valve 23 are closed, and the first backflush valve 24 and the second backflush valve 25 are opened. Then, high-pressure water is introduced into the second backflush valve 25. Under the impact of the high-pressure water, the impurities on the filter screen 27 are flushed out of the first backflush valve 24, completing the self-cleaning of the filter 2.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid unloading device for urea tank trucks, characterized in that: It includes an inlet, a filter, a discharge pump, a solenoid valve, and an outlet connected in sequence through pipelines. The filter includes a housing and a filter screen, with the filter screen disposed inside the housing. The housing has an inlet valve at the top and an outlet valve at the bottom, and a heating wire on the inner wall of the housing.

2. The unloading device for a urea tanker truck according to claim 1, characterized in that: The upper side of the housing is provided with a first backflow valve, the lower side of the housing is provided with a second backflow valve, and the filter screen is located between the first backflow valve and the second backflow valve.

3. The unloading device for a urea tanker truck according to claim 1, characterized in that: A flow meter is installed between the solenoid valve and the output port.

4. The unloading device for a urea tanker truck according to claim 1, characterized in that: Both the input and output ports are high-speed interfaces.

5. The unloading device for a urea tanker truck according to claim 1, characterized in that: The solenoid valve is a pulse solenoid valve.

6. The unloading device for a urea tanker truck according to claim 3, characterized in that: The flow meter is an electromagnetic flow meter.

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