WO2020048037A1

WO2020048037A1 - Feeding stirring mechanism and urea machine having same

Info

Publication number: WO2020048037A1
Application number: PCT/CN2018/120932
Authority: WO
Inventors: 朱东和; 赵志伟; 黄家峰
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: CN108905773A

Abstract

Provided are a feeding stirring mechanism and a urea machine having same. The feeding stirring mechanism comprises: a raw material tank (10) used for storing materials; a stirring tank (20) having a material stirring space (21); and a feeding machine (30), with the feeding machine (30) comprising a feeding pipe (31) and a feeding screw (32) arranged in the feeding pipe (31), wherein one end of the feeding pipe (31) is in communication with the raw material tank (10), and the other end is in communication with the stirring tank (20), so as to feed the materials in the raw material tank (10) into the stirring tank (20); and the feeding pipe (31) is provided with a feeding inlet port for communicating with a discharge port of the raw material tank (10) and a feeding outlet port for communicating with a feeding port of the stirring tank (20), and the feeding inlet port and the feeding discharging port are both arranged in the pipe wall of the feeding pipe (31).

Description

Feeding stirring mechanism and urea machine having the same

Technical field

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

Background technique

In order to achieve the goal of sustainable development, the current development of various industries will consider its impact on the environment. According to statistics, nitrogen oxides account for a greater proportion of pollutants emitted by heavy diesel vehicles. In order to treat the emissions of this type of vehicle, the industry currently uses vehicle urea solution as a nitrogen oxide reducing agent for diesel engines to reduce pollution.

Urea solutions for vehicles are currently manufactured by large chemical manufacturers, packed after they are manufactured, and then transported by special vehicles to petrol stations issued by oil companies, stored at petrol stations, and waiting for vehicles to refill.

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.

At the same time, the production process of the urea solution in the prior art has the following problems: In the preparation process of the urea solution, the urea material needs to be transported to a stirring tank for stirring. In the prior art, a manual conveyance method is used. This conveyance method Not only is it inefficient, but it is not easy to control the weight of the material being moved.

Summary of the Invention

The main purpose of the present invention is to provide a feeding and stirring mechanism and a urea machine having the same to solve the problem of low efficiency in the method of transporting urea materials into a mixing tank in the prior art.

In order to achieve the above object, according to an aspect of the present invention, a feeding and stirring mechanism is provided, including: a raw material tank for storing materials; a stirring tank having a material stirring space; a loading machine and a loading machine including a loading pipe And the feeding screw provided in the feeding pipe, one end of the feeding pipe is communicated with the raw material tank, and the other end of the feeding pipe is communicated with the stirring tank, so as to send the materials in the raw material tank into the stirring tank; among them, the feeding pipe There is a feeding inlet for communicating with the outlet of the raw material tank and a feeding outlet for communicating with the inlet of the mixing tank. The feeding inlet and the feeding outlet are both arranged on the upper side. On the tube wall.

Further, the feeding and stirring mechanism further includes: a first connection pipe, one end of the first connection pipe is connected to the material outlet of the raw material tank, and the other end of the first connection pipe is connected to the material inlet, so that the inside of the material tank The material enters the feeder through the first connecting pipe.

Further, the feeding and stirring mechanism further includes: a second connecting pipe, one end of the second connecting pipe is connected to the feeding port of the stirring tank, and the other end of the second connecting pipe is connected to the feeding and discharging port.

Further, the feeding and stirring mechanism further includes: a suction machine, the suction machine is in communication with the raw material tank to suck the material into the raw material tank.

Further, the raw material tank includes: a material storage portion having a material storage cavity for storing materials; a material discharge portion having a material storage cavity for storing materials; the material discharge portion is located below the material storage portion; The discharge opening of the tank is set at the bottom of the discharge section so that the materials in the storage cavity flow out from the discharge opening of the raw material tank after the discharge section; wherein the discharge section has a tapered structure, In the direction of the discharge port, the cross-section of the discharge cavity in the horizontal direction gradually decreases.

Further, the feeding pipe is arranged obliquely to a vertical plane, and the discharging part is conical.

Further, the feeding tube extends in a vertical direction, and the feeding portion includes a first feeding plate and a second feeding plate opposite to the first feeding plate, and the second feeding plate is disposed away from the first feeding plate. One side of the feeding tube; the first feeding plate is arranged in parallel with the feeding tube.

Further, the feeding stirring mechanism further includes: a stirring rod, at least a part of which is rotatably disposed in the stirring tank; a stirring frame, the stirring frame is located in the material stirring space, and the stirring frame is provided on the stirring rod so that The materials located in the material mixing space are stirred under the drive of.

Further, the stirring frame is formed by splicing a plurality of rod sections, and there are a plurality of stirring frames, and the plurality of stirring frames are arranged around the stirring rod.

Further, the feeding and stirring mechanism further includes: a material shifting lever, which is located in the material mixing space, the material shifting lever is perpendicular to the mixing lever and is connected to the stirring lever to rotate under the driving of the stirring lever; Located at least partially below the pick lever.

According to another aspect of the present invention, a urea machine is provided, which includes a feeding stirring mechanism, and the feeding stirring mechanism is the aforementioned feeding stirring mechanism.

The feeding and stirring mechanism in the present invention comprises a raw material tank, a stirring tank and a feeding machine. The raw material tank is used for storing materials. The stirring tank has a material stirring space. The loading machine includes a feeding pipe and a feeding screw provided in the feeding pipe. One end of the feeding tube is in communication with the raw material tank, and the other end of the feeding tube is in communication with the stirring tank to send the materials in the raw material tank into the stirring tank. At the same time, the feeding pipe has a feeding inlet for communicating with the discharging opening of the raw material tank, and a feeding outlet for communicating with the feeding opening of the mixing tank, a feeding inlet and a feeding discharge The ports are all arranged on the pipe wall of the feeding pipe. In this way, by using the feeding machine, the materials in the raw material tank can be conveniently transferred to the mixing tank, thereby avoiding manual transportation of the materials, and solving the problem of transferring urea materials into the mixing tank in the prior art. The less efficient way.

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 shows a schematic structural diagram of an embodiment of a loading stirring mechanism according to the present invention; and

FIG. 2 is a schematic structural diagram of another embodiment of a feeding stirring mechanism according to the present invention.

The above drawings include the following reference signs:

10. Raw material tank; 11. Material storage department; 12. Material discharge department; 121. First material discharge plate; 122; Second material discharge plate; 20. Mixing tank; 21. Material mixing space; 30. Feeder; 31. Feeding pipe; 32. Feeding screw; 40. First connecting pipe; 50. Second connecting pipe; 60. Suction machine; 70. Stirring rod; 80; Stirring rack; 90.

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 feeding and stirring mechanism. Please refer to FIGS. 1 and 2. The feeding and stirring mechanism includes: a raw material tank 10 for storing materials; a mixing tank 20 having a material stirring space 21; a feeding machine 30, The feeding machine 30 includes a feeding tube 31 and a feeding screw 32 provided in the feeding tube 31. One end of the feeding tube 31 is in communication with the raw material tank 10, and the other end of the feeding tube 31 is in communication with the stirring tank 20, so that The material in the raw material tank 10 is sent into the mixing tank 20; among them, the feeding pipe 31 has a feeding feeding port for communicating with the discharging port of the raw material tank 10 and a feeding port for communicating with the feeding port of the mixing tank 20 The feeding outlet, the feeding inlet and the feeding outlet are all arranged on the pipe wall of the feeding tube 31.

The feeding and stirring mechanism in the present invention includes a raw material tank 10, a stirring tank 20, and a feeding machine 30. The raw material tank 10 is used for storing materials. The stirring tank 20 has a material stirring space 21. The feeding machine 30 includes a feeding pipe 31 and a device. A feeding screw 32 in the feeding tube 31, one end of the feeding tube 31 is in communication with the raw material tank 10, and the other end of the feeding tube 31 is in communication with the stirring tank 20, so as to feed the materials in the raw material tank 10 into the stirring tank 20 Inside. At the same time, the feeding tube 31 has a feeding inlet for communicating with the discharging port of the raw material tank 10 and a feeding outlet for communicating with the feeding port of the mixing tank 20, a feeding inlet and The material discharge openings are all arranged on the pipe wall of the feeding pipe 31. In this way, by using the loading machine 30, the materials in the raw material tank 10 can be conveniently transferred to the mixing tank 20, which avoids the manual transportation of the materials, and solves the problem of transferring urea materials to the prior art. The method in the mixing tank is inefficient.

In order to realize the connection between the discharge opening of the raw material tank 10 and the feeding inlet of the feeding machine 30, as shown in FIGS. 1 and 2, the feeding stirring mechanism further includes: a first connection pipe 40, a first connection One end of the pipe 40 is connected to the discharge opening of the raw material tank 10, and the other end of the first connection pipe 40 is connected to the feeding inlet, so that the material in the raw material tank 10 enters the feeder 30 through the first connection pipe 40. .

In order to realize the connection between the feeding outlet of the feeding machine 30 and the feeding inlet of the stirring tank 20, as shown in FIG. 1 and FIG. 2, the feeding stirring mechanism further includes a second connection pipe 50 and a second connection. One end of the tube 50 is connected to the feeding port of the stirring tank 20, and the other end of the second connection tube 50 is connected to the feeding outlet.

In this embodiment, as shown in FIGS. 1 and 2, the feeding and stirring mechanism further includes: a suction machine 60, which is in communication with the raw material tank 10 to suck the material into the raw material tank 10. By setting the suction machine 60, the materials can be conveniently transported into the raw material tank 10.

The specific structure of the raw material tank 10 in this embodiment is shown in FIG. 1 and FIG. 2. The raw material tank 10 includes: a storage part 11 having a storage cavity for storing materials; a discharging part 12, a discharging part 12 A discharge chamber for storing materials is provided. The discharge section 12 is located below the storage section 11. The discharge opening of the raw material tank 10 is provided at the bottom of the discharge section 12 so that the materials in the storage chamber are discharged. The portion 12 flows out from the discharge opening of the raw material tank 10; wherein, the discharge portion 12 has a tapered structure, and the cross-section of the discharge cavity in the horizontal direction gradually decreases along the direction near the discharge opening of the raw material tank 10.

In an embodiment of the present invention, as shown in FIG. 1, the feeding tube 31 is disposed obliquely to a vertical plane, and the discharging portion 12 is conical. In this way, the loading pressure of the loading machine 30 can be reduced, and the materials can be smoothly transferred into the mixing tank 20.

In another embodiment of the present invention, as shown in FIG. 2, the feeding tube 31 extends in a vertical direction, and the discharging portion 12 includes a first feeding plate 121 and a second feeding plate opposite to the first feeding plate 121. The material plate 122 and the second material plate 122 are disposed on a side of the first material plate 121 away from the feeding tube 31; the first material plate 121 is disposed in parallel with the material tube 31.

In this embodiment, by extending the feeding pipe 31 in the vertical direction, the occupied space of the feeding machine 30 can be saved. By placing the first discharge plate 121 in parallel with the feeding tube 31 and the second discharge plate 122 is inclined to a vertical plane, normal feeding of the material can be ensured.

In order to stir the materials located in the material mixing space 21, as shown in FIGS. 1 and 2, the feeding stirring mechanism further includes: a stirring rod 70, at least a portion of the stirring rod 70 is rotatably disposed in the mixing tank 20; The rack 80 and the stirring rack 80 are located in the material stirring space 21. The stirring rack 80 is disposed on the stirring rod 70 to stir the materials located in the material stirring space 21 under the driving of the stirring rod 70.

In this embodiment, the stirring frame 80 is formed by splicing a plurality of rod segments, there are a plurality of stirring frames 80, and the plurality of stirring frames 80 are arranged around the stirring rod 70. In this way, the stirring effect can be improved.

Specifically, the mixing frame 80 is matched with the inner wall of the material mixing space 21, so that the mixing frame 80 peels off the material located on the inner wall of the material mixing space 21. Preferably, the stirring frame 80 includes a first pole segment, a second pole segment, and a third pole segment connected in sequence, and the first pole segment and the second pole segment have a first angle between the second pole segment and the third pole segment. There is a second included angle between the segments. Preferably, the first included angle is smaller than the second included angle. The first rod section is connected to the stirring rod 70, and the third rod section is parallel to the stirring rod 70.

In this embodiment, as shown in FIG. 1 and FIG. 2, the feeding and stirring mechanism further includes: a feeding lever 90, which is located in the material stirring space 21, and the feeding lever 90 is perpendicular to the stirring lever 70 and is connected with the stirring The rod 70 is connected to rotate under the driving of the stirring rod 70; wherein, at least a part of the stirring frame 80 is located below the dial lever 90.

Preferably, the shift lever 90 is a straight lever, one end of the shift lever 90 is connected to the stirring lever 70, and the other end of the shift lever 90 is a free end. There are a plurality of shift levers 90, and a plurality of shift levers 90 are arranged around the stirring lever 70.

In addition, the shift lever 90 is located inside the stirring frame 80. A plurality of stirring racks 80 are arranged around the shift lever 90.

In order to drive the stirring rod 70 to rotate, the feeding and stirring mechanism further includes a driving motor, which is installed at the upper end of the stirring tank 20, and an output shaft of the driving motor is connected to the stirring rod 70.

An on-off control valve is provided at the discharge port of the stirring tank 20, and the feeding and stirring mechanism further includes a driving device for driving the on-off control valve to operate. In this way, by controlling the activation of the driving device, the discharge of the stirring tank 20 can be controlled.

According to the present invention, a urea machine is also provided, which includes a feeding agitation mechanism, and the feeding agitation mechanism is the aforementioned feeding agitation mechanism.

The stand-alone vehicle urea preparation machine integrated with the gas station will be the direction of the future vehicle urea preparation machine. The urea in the present invention and a urea transport structure for a stand-alone vehicle urea preparation machine realize the urea preparation. Automated production.

The urea machine in the present invention solves the following technical problems:

1. Solve the problem of urea transportation in the vehicle urea preparation machine;

2. The automation of the production and ratio of urea solution for vehicles has been realized;

The urea in the invention and the urea solution for the automated production of vehicles are realized, which reduces the manual labor and interference and ensures the quality of the product.

The invention of the feeding stirring mechanism in the present invention lies in:

Use screw feeding structure to replace traditional manual handling and realize automation;

The screw feeding device (feeder 30) realizes high-precision feeding, ensures the accuracy of the solution concentration, and improves the quality of the urea solution.

The feeding machine 30 in the present invention is a screw feeding mechanism for conveying urea particles for vehicles, and realizes the automatic production of urea for vehicles in cooperation with other mechanisms. Its main structure consists of a main screw, a screw motor, flexible tubes at both ends and Consisting of mounting brackets;

The main screw is used to transport urea through rotation and is the core component of the mechanism; the screw motor is used to drive, and the flexible pipe is mainly used to connect and cooperate with the tank and weighing module to complete the accurate feedback of the output; effect.

The specific implementation process is as follows:

First, the urea granules are manually sucked into the 1-ton metering bin (raw material tank 10) through the suction machine, and the metering bin plays the role of urea storage and metering. Manually sucking and filling the metering bin once can meet the equipment's long-term operation;

Second, the PLC controls the motor to drive the screw to rotate according to the amount of urea required each time. The rotation of the screw drives the urea from the lower mouth of the metering bin to the inlet of the mixing tank and enters the mixing tank;

The advantage of screw feeding is that the screw can move accurately at any time to ensure the precise and controllable and adjustable feeding amount.

As shown in FIG. 1, the advantages of the inclined feeding mechanism are higher efficiency and large conveying capacity, which can satisfy the use of equipment with large output, but the disadvantage is that it takes up a large amount of space, and some space cannot be effectively used.

As shown in Figure 2, the vertical feeding mechanism has the advantage that the space is fully utilized, but the conveying capacity is poor, which is suitable for small models.

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 feeding and stirring mechanism, comprising:

Raw material tank (10) for storing materials;

Mixing tank (20) with material mixing space (21);

A feeding machine (30), the feeding machine (30) comprises a feeding pipe (31) and a feeding screw (32) arranged in the feeding pipe (31), the feeding pipe (31) One end is in communication with the raw material tank (10), and the other end of the feeding pipe (31) is in communication with the stirring tank (20), so as to feed the materials in the raw material tank (10) into the stirring Inside the tank (20);

Wherein, the feeding pipe (31) has a feeding feeding port for communicating with the discharging port of the raw material tank (10) and a feeding port for communicating with the feeding port of the stirring tank (20). The material discharge opening, the material feeding inlet and the material discharge opening are all arranged on the pipe wall of the material feeding pipe (31).
The feeding and stirring mechanism according to claim 1, wherein the feeding and stirring mechanism further comprises:

A first connecting pipe (40), one end of the first connecting pipe (40) is connected to a discharge opening of the raw material tank (10), and the other end of the first connecting pipe (40) is connected to the feeding The feeding port is connected so that the material in the raw material tank (10) enters the feeding machine (30) through the first connecting pipe (40).
The feeding and stirring mechanism according to claim 1, wherein the feeding and stirring mechanism further comprises:

A second connecting pipe (50), one end of the second connecting pipe (50) is connected to the feeding port of the stirring tank (20), and the other end of the second connecting pipe (50) is connected to the feeding Outlet connection.
The feeding and stirring mechanism according to claim 1, wherein the feeding and stirring mechanism further comprises:

A suction machine (60), the suction machine (60) is in communication with the raw material tank (10) to suck materials into the raw material tank (10).
The feeding and stirring mechanism according to claim 1, wherein the raw material tank (10) comprises:

A material storage section (11) having a material storage cavity for storing materials;

A discharging section (12), the discharging section (12) has a discharging chamber for storing materials, the discharging section (12) is located below the storage section (11), and the raw material tank (10) The discharge opening is arranged at the bottom of the discharge section (12), so that the materials in the storage chamber pass through the discharge section (12) and exit from the raw material tank (10). Outflow

Wherein, the discharging part (12) has a tapered structure, and a section of the discharging cavity along a horizontal direction gradually decreases along a direction close to a discharge opening of the raw material tank (10).
The feeding and stirring mechanism according to claim 5, wherein the feeding pipe (31) is disposed obliquely to a vertical plane, and the discharging portion (12) is conical.
The feeding and stirring mechanism according to claim 5, characterized in that the feeding pipe (31) extends in a vertical direction, and the discharging portion (12) comprises a first discharging plate (121) and The first discharge plate (121) is opposite to the second discharge plate (122), and the second discharge plate (122) is disposed on the first discharge plate (121) away from the loading pipe (31). One side; the first discharge plate (121) is arranged in parallel with the feeding tube (31).
The feeding and stirring mechanism according to claim 1, wherein the feeding and stirring mechanism further comprises:

A stirring rod (70), at least part of which is rotatably disposed in the stirring tank (20);

A stirring frame (80), which is located in the material stirring space (21), the stirring frame (80) is arranged on the stirring rod (70) so that the stirring rod (70) ) To stir the materials located in the material mixing space (21).
The feeding and stirring mechanism according to claim 8, wherein the stirring frame (80) is formed by splicing a plurality of rod segments, the stirring frame (80) is plural, and the plurality of mixing frames ( 80) is arranged around the stirring rod (70).
The feeding and stirring mechanism according to claim 8, wherein the feeding and stirring mechanism further comprises:

A material shifting lever (90), the material shifting lever (90) is located in the material stirring space (21), the material shifting lever (90) is perpendicular to the mixing lever (70) and is 70) Connected to rotate by the stirring rod (70);

Wherein, at least a part of the stirring frame (80) is located below the material shifting lever (90).
A urea machine includes a feeding and stirring mechanism, wherein the feeding and stirring mechanism is the feeding and stirring mechanism according to any one of claims 1 to 10.