WO2020048039A1

WO2020048039A1 - Stirring device and urea machine having same

Info

Publication number: WO2020048039A1
Application number: PCT/CN2018/120934
Authority: WO
Inventors: 朱东和; 黄家峰; 赵志伟; 杨春雷; 曾威
Original assignee: 珠海格力智能装备有限公司; 珠海格力电器股份有限公司
Priority date: 2018-09-07
Filing date: 2018-12-13
Publication date: 2020-03-12
Also published as: CN108970461B; CN108970461A

Abstract

Provided in the present invention are a stirring device and a urea machine having same. The stirring device comprises: a stirring tank having a solution outlet portion and a solution recovery port; and a concentration detection pipeline, wherein one end of the concentration detection pipeline is connected to the solution outlet portion, and the other end of the concentration detection pipeline is connected to the solution recovery port so as to determine the concentration of a solution located in the stirring tank by means of detecting the concentration of a solution located in the concentration detection pipeline, and return the solution located in the concentration detection pipeline to the stirring tank by means of the solution recovery port. The present stirring device solves the problem in existing technology in which the concentration of a urea solution is difficult to control.

Description

Stirring device and urea machine having the same

Technical field

The invention relates to the field of urea solution production, in particular to a stirring device and a urea machine having the same.

Background technique

At present, almost all urea solutions for vehicles used in the market are equipped by large factories and shipped to the market, and there is a huge waste of resources such as transportation costs and storage costs.

Because the accuracy of the concentration determines the quality of the urea solution, the traditional concentration detection method is to perform the concentration detection after the solution is mixed. Once the concentration has a deviation, it must be remixed and then tested. This process takes a lot of time. , The concentration can not be controlled more accurately.

Summary of the Invention

The main purpose of the present invention is to provide a stirring device and a urea machine having the same to solve the problem that the concentration of the urea solution in the prior art is difficult to control.

In order to achieve the above object, according to an aspect of the present invention, a stirring device is provided, including: a stirring tank having a solution outlet and a solution recovery port; a concentration detection pipeline, one end of the concentration detection pipeline and the solution outlet Connection, the other end of the concentration detection pipeline is connected to the solution recovery port to determine the concentration of the solution in the stirring tank through the concentration detection of the solution located in the concentration detection pipeline, and the solution is located in the concentration detection pipeline through the solution recovery port The solution was returned to the mixing tank.

Further, the stirring device further includes: a concentration meter installed on the concentration detection pipeline to detect the concentration of the solution located in the concentration detection pipeline.

Further, the stirring device further includes: a driving pump, which is installed on the concentration detection pipeline to drive the solution flowing out of the solution outlet through the concentration detection pipeline to flow into the mixing tank from the solution recovery port.

Further, the stirring device further includes: a first on-off control valve, the first on-off control valve is disposed on the concentration detection pipeline and is located between the driving pump and the solution outlet to control the on-off of the concentration detection pipeline.

Further, the stirring device further includes: a finished product output pipeline, and the finished product output pipeline is connected to the concentration detection pipeline, so that when the concentration in the mixing tank reaches a requirement, the solution in the mixing tank is output through the concentration detection pipeline and the finished product The pipe runs out.

Further, the stirring device further includes a second on-off control valve, and the second on-off control valve is disposed on the finished product output pipeline to control the on-off of the finished product output pipeline.

Further, the stirring device further includes: a concentration meter arranged on the concentration detection pipeline to detect the concentration of the solution located in the concentration detection pipeline; a driving pump disposed on the concentration detection pipeline, the concentration detection pipeline having a driving pump and The pipe section between the densitometer and the finished output pipe are connected to the pipe section.

Further, the stirring device further includes: a third on-off control valve, the third on-off control valve is disposed on the concentration detection pipeline, a connection is provided between the concentration detection pipeline and the finished product output pipeline, and the third on-off control valve is located at Between the connection and the concentration meter.

Further, the stirring device further includes: a sewage valve, the sewage valve is installed on the solution outlet portion, and the sewage treatment is performed on the stirring tank through the sewage valve.

Further, the stirring device further includes: a suction tank, the suction tank is installed on the stirring tank, so that the suction pipe communicates with the cavity of the stirring tank through the suction tank.

According to another aspect of the present invention, there is provided a urea machine including a stirring device, and the stirring device is the above-mentioned stirring device.

The stirring device in the present invention includes a stirring tank and a concentration detection pipeline. The stirring tank has a solution outlet and a solution recovery port. One end of the concentration detection pipeline is connected to the solution outlet, and the other end of the concentration detection pipeline is connected to the solution recovery port. . In this way, the concentration of the solution located in the stirring tank can be determined by performing concentration detection on the solution located in the concentration detection pipeline, and the solution located in the concentration detection pipeline can be returned to the stirring tank through the solution recovery port. Furthermore, the solution circulation in the stirring tank is realized, and the concentration of the solution in the stirring tank is detected in real time, which solves the problem that the concentration of the urea solution in the prior art is difficult to control.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of a stirring device according to the present invention.

The above drawings include the following reference signs:

10. Stirring tank; 11. Solution outlet; 20; Concentration detection pipeline; 30; Concentration meter; 40; Drive pump; 50; First on-off control valve; 60; Finished product output pipeline; 70; Second on-off Control valve; 80, third on-off control valve; 90, sewage valve; 100, suction tank; 110, suction pipe.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

The present invention provides a stirring device. Please refer to FIG. 1. The stirring device includes: a stirring tank 10 having a solution outlet 11 and a solution recovery port; a concentration detection pipeline 20; The solution outlet portion 11 is connected, and the other end of the concentration detection pipe 20 is connected to the solution recovery port, so as to determine the concentration of the solution located in the stirring tank 10 by detecting the concentration of the solution located in the concentration detection pipe 20, and recover the solution through the solution. The mouth sends the solution located in the concentration detection pipeline 20 back to the stirring tank 10.

The stirring device in the present invention includes a stirring tank 10 and a concentration detection pipeline 20. The stirring tank 10 has a solution outlet portion 11 and a solution recovery port. One end of the concentration detection pipeline 20 is connected to the solution outlet portion 11. The other end is connected to the solution recovery port. In this way, the concentration of the solution in the mixing tank 10 can be determined by performing concentration detection on the solution in the concentration detection pipeline 20, and the solution in the concentration detection pipeline 20 can be returned to the agitation through the solution recovery port. In the tank 10, the solution circulation in the stirring tank 10 is further realized, and the concentration of the solution in the stirring tank 10 is detected in real time, which solves the problem that the concentration of the urea solution in the prior art is difficult to control.

In order to realize the concentration detection of the solution, as shown in FIG. 1, the stirring device further includes a concentration meter 30 which is installed on the concentration detection pipeline 20 to detect the concentration of the solution located in the concentration detection pipeline 20.

In this embodiment, the stirring device further includes: a driving pump 40, which is installed on the concentration detection pipeline 20 to drive the solution flowing out of the solution outlet 11 through the concentration detection pipeline 20 to flow into the agitation from the solution recovery port Inside the canister 10. By providing the driving pump 40, the concentration flow in the concentration detection pipeline 20 can be relatively easily driven.

In this embodiment, the stirring device further includes a first on-off control valve 50. The first on-off control valve 50 is disposed on the concentration detection pipeline 20 and is located between the driving pump 40 and the solution outlet portion 11 to control the concentration. The on-off of the pipeline 20 is detected. By providing the first on-off control valve 50, the on-off of the solution in the stirring tank 10 and the concentration detection pipeline 20 can be controlled relatively conveniently.

When the concentration of the solution in the stirring tank 10 reaches a predetermined value, the stirring device further includes: a finished product output line 60, and the finished product output line 60 is connected to the concentration detection line 20 so that when the concentration in the stirring tank 10 reaches a required level, The solution located in the stirring tank 10 is caused to flow out through the concentration detection pipeline 20 and the finished product output pipeline 60. In this way, the solution that meets the concentration requirements in the stirred tank 10 can be produced.

In this embodiment, the stirring device further includes a second on-off control valve 70. The second on-off control valve 70 is disposed on the finished product output line 60 to control the on-off of the finished product output line 60. By setting the second on-off control valve 70, the on-off of the finished product output pipeline 60 can be controlled more conveniently, and then the switching between the finished product output and the concentration detection can be realized.

In this embodiment, as shown in FIG. 1, the stirring device further includes: a concentration meter 30 provided on the concentration detection pipeline 20 to detect the concentration of the solution located in the concentration detection pipeline 20; On the concentration detection pipeline 20, the concentration detection pipeline 20 has a pipe section located between the driving pump 40 and the concentration meter 30, and the finished product output pipe 60 is connected to the pipe section. By providing the driving pump 40, the solution in the stirring tank 10 can be introduced into the concentration detection pipeline 20 and the finished product output pipeline 60 more conveniently.

In this embodiment, the stirring device further includes: a third on-off control valve 80, the third on-off control valve 80 is disposed on the concentration detection pipeline 20, and there is a connection between the concentration detection pipeline 20 and the finished product output pipeline 60 The third on-off control valve 80 is located between the connection and the concentration meter 30. By providing the third on-off control valve 80, the on-off of the concentration detection pipeline 20 can be realized relatively conveniently.

When the concentration detection is performed, the first on-off control valve 50 and the third on-off control valve 80 are opened, and the second on-off control valve 70 is closed. When the finished product is output, the first on-off control valve 50 and the second on-off control valve 70 are opened, and the third on-off control valve 80 is closed.

In this embodiment, the stirring device further includes: a blowdown valve 90, which is installed on the solution outlet portion 11 to perform a blowdown treatment on the stirring tank 10 through the blowdown valve 90. By providing the drain valve 90, the drain treatment of the agitating tank 10 can be implemented relatively conveniently.

In this embodiment, the stirring device further includes: a suction tank 100, which is installed on the stirring tank 10 so that the suction pipe 110 communicates with the cavity of the stirring tank 10 through the suction tank 100.

Preferably, the suction tank 100 is a vacuum suction tank. The vacuum suction tank is a vacuum suction filling device for drawing the filling material between the carbon blocks and between the carbon blocks and the wall of the material box when the cathode or graphite electrode is roasted. It consists of a telescopic suction tube, a rotating support for the suction tube, a storage tank, and a vacuum suction tube.

The invention also provides a urea machine, including a stirring device, and the stirring device is the above-mentioned stirring device.

The invention designs a concentration on-line detection device for a single-type vehicle urea preparation machine, which can perform on-line detection during the mixing process. At the same time, if the detected concentration of the PLC does not meet the requirements, pure water or urea particles can be added in time. After the concentration reaches the qualified concentration, the mixing process of the solution is completed at one time. This process consumes much less time than the traditional process, and the concentration accuracy of the finished product is high. Gas station-integrated stand-alone vehicle urea preparation machine will be the direction of future vehicle urea preparation machine.

The invention points created by the present invention are:

1. The on-line detection during the production process reduces the average time required to produce the solution and improves the concentration accuracy;

2. The detection accuracy has been improved through cyclic detection, avoiding false detection caused by uneven mixing.

The following technical problems are solved by the present invention:

1. Solve the function of online monitoring the concentration of urea solution for vehicles during the preparation process;

2. Cyclic detection ensures that the detection data is the overall solution concentration data, which avoids the problem of inaccurate solution concentration detection caused by uneven mixing.

The technical effect of the present application is that the production time of the urea solution for vehicles is reduced, and the concentration accuracy of the urea solution for vehicles is improved.

The invention designs a detection device and method for real-time online monitoring of urea solution for vehicles. The device mainly consists of: a concentration meter, a detection valve (third on-off control valve 80), and a finished valve (second on-off control valve 70). , Water pump (driving pump 40), maintenance valve (first on-off control valve 50), sewage valve 90 and main body stirring tank.

Among them, the concentration meter is the core component and is responsible for the detection of the solution. The detection valve, the finished product valve, the maintenance hand valve, and the blowdown valve are used to control the direction of the pipeline fluid.

The specific implementation process is as follows:

First, the mixing tank completes the feeding of pure water and urea particles, and the mixing motor starts to rotate. According to historical theoretical values, when the mixing is completed 80% of the time, the pump starts to work and the detection valve is opened at the same time. At this time, the finished valve is closed. , Maintenance hand valve is normally open;

The urea solution flows through the pipeline in the direction of the arrow in Figure 1. The concentration meter starts to detect the concentration. When the concentration meter's detection concentration is stable and meets the specified concentration, the solution is a qualified solution and the solution production is completed. When the concentration meter's detection concentration is stable and When the concentration is less than or greater than the specified concentration, the PLC adds the calculated minimum amount of compensated urea and pure water to the mixing tank, and the concentration meter re-judgments. When the concentration is adjusted to meet the specified concentration, the solution production is completed.

At this time, the detection valve is closed, the finished product valve is opened, and the qualified solution enters the finished product box through the finished product valve. After the qualified solution is emptied, the finished product valve is closed and a cycle is restarted.

The role of the maintenance hand valve is: if the water pump is broken, you can close the hand valve and then take out the water pump for repair. The function of the drain valve is that when the mixing tank is cleaned regularly, the drain operation can be performed. At this time, the water pump is not turned on to avoid sewage contamination of the subsequent pipeline.

For concentration detection, another concentration detector can be used and placed in a stirred tank for real-time detection, but there is a risk of misdetection caused by uneven solution mixing and poor maintenance.

From the above description, it can be seen that the foregoing embodiments of the present invention achieve the following technical effects:

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

A stirring device, comprising:

A stirring tank (10), which has a solution outlet (11) and a solution recovery port;

A concentration detection pipeline (20), one end of the concentration detection pipeline (20) is connected to the solution outlet (11), and the other end of the concentration detection pipeline (20) is connected to the solution recovery port, In order to determine the concentration of the solution located in the stirring tank (10) by performing concentration detection on the solution located in the concentration detection pipeline (20), the concentration detection pipeline ( The solution in 20) is returned to the stirring tank (10).
The stirring device according to claim 1, wherein the stirring device further comprises:

A concentration meter (30) installed on the concentration detection pipeline (20) to detect the concentration of a solution located in the concentration detection pipeline (20).
The stirring device according to claim 1, wherein the stirring device further comprises:

A driving pump (40), which is installed on the concentration detection pipeline (20) to drive the solution flowing out of the solution outlet (11) through the concentration detection pipeline (20) Then, it flows into the stirring tank (10) from the solution recovery port.
The stirring device according to claim 3, wherein the stirring device further comprises:

A first on-off control valve (50), the first on-off control valve (50) is provided on the concentration detection pipeline (20) and is located on the drive pump (40) and the solution outlet portion (11) ) To control the on-off of the concentration detection pipeline (20).
The stirring device according to claim 1, wherein the stirring device further comprises:

A finished product output pipeline (60), which is connected to the concentration detection pipeline (20) so that when the concentration in the stirring tank (10) reaches a requirement, the The solution in the tank (10) flows out through the concentration detection pipeline (20) and the finished product output pipeline (60).
The stirring device according to claim 5, wherein the stirring device further comprises:

A second on-off control valve (70), the second on-off control valve (70) is provided on the finished product output pipeline (60) to control the on-off of the finished product output pipeline (60).
The stirring device according to claim 5, wherein the stirring device further comprises:

A concentration meter (30) arranged on the concentration detection pipeline (20) to detect the concentration of a solution located in the concentration detection pipeline (20);

The driving pump (40) is arranged on the concentration detection pipeline (20), and the concentration detection pipeline (20) has a pipe section located between the driving pump (40) and the concentration meter (30), The finished output pipe (60) is connected to the pipe section.
The stirring device according to claim 7, wherein the stirring device further comprises:

A third on-off control valve (80), the third on-off control valve (80) is provided on the concentration detection pipeline (20), the concentration detection pipeline (20) and the finished product output pipeline There is a connection between (60), and the third on-off control valve (80) is located between the connection and the concentration meter (30).
The stirring device according to claim 1, wherein the stirring device further comprises:

A drain valve (90) is installed on the solution outlet (11) to perform a drain treatment on the stirring tank (10) through the drain valve (90).
The stirring device according to any one of claims 1 to 9, wherein the stirring device further comprises:

Suction tank (100), the suction tank (100) is installed on the stirring tank (10), so that the suction pipe (110) passes through the suction tank (100) and the stirring tank (10) ) Cavity is connected.
A urea machine comprising a stirring device, characterized in that the stirring device is the stirring device according to any one of claims 1 to 10.