Stirring device for preparing automobile three-way catalyst and use method of stirring device

Abstract

The invention relates to the technical field of automobile three-way catalyst preparation, and particularly discloses a stirring device for automobile three-way catalyst preparation, which comprises a base, a connecting cavity, a top cavity and an end cover piece detachably connected with the top of the top cavity and used for fully mixing a solution, which are fixedly connected in sequence from bottom to top, a liquid inlet and a liquid outlet are formed in the two sides of the connecting cavity correspondingly, a lifting plate capable of moving into the top cavity is slidably connected into the connecting cavity, and an air bag assembly used for allowing the lifting plate to move up and down is arranged in the connecting cavity; a driving part, a main stirring assembly driven by the driving part and an auxiliary stirring assembly rotating based on the main stirring assembly are arranged on the end cover part, an auxiliary part used in cooperation with the main stirring assembly and used for full-layer stirring of a solution is arranged in the top cavity, and a rotating disc used for rotating a catalyst carrier is arranged on the main stirring assembly; the stirring device for preparing the automobile three-way catalyst solves the problem that a traditional stirring device for preparing the automobile three-way catalyst is insufficient in stirring.

Description

Technical Field

[0001] This application relates to the technical field of automotive three-way catalyst preparation, and specifically discloses a stirring device and a usage method for automotive three-way catalyst preparation. Background Art

[0002] Automotive three-way catalysts mainly consist of three parts: a carrier, a coating, and a housing, each playing an indispensable role;

[0003] Regarding the carrier: The carrier is the support of the catalyst and is usually made of porous ceramic materials such as honeycomb ceramics;

[0004] Regarding the coating: The coating is a layer of catalytically active substance attached to the surface of the carrier and is usually composed of noble metals such as platinum (Pt), rhodium (Rh), and palladium (Pd);

[0005] Regarding the housing: The housing is a metal structure that wraps around the outside of the carrier and the coating. It is usually made of stainless steel. The main function of the housing is to protect the internal carrier and coating from damage by the external environment, such as oxidation, corrosion, and mechanical shock, etc. It can also ensure the sealing of the entire catalytic converter and prevent untreated exhaust gas from leaking into the atmosphere;

[0006] The stirring device for automotive three-way catalysts is an important device for uniformly mixing and stirring catalyst materials during the production of automotive exhaust three-way catalysts. During the production of automotive exhaust three-way catalysts, the stirring device is usually installed in an impregnation tank or integrated with the impregnation process. A solution containing noble metals (such as platinum, rhodium, palladium, etc.) and a catalyst carrier (such as honeycomb ceramics, granular activated carbon, etc.) are put into the stirring device together, and the stirring blades or other stirring mechanisms are driven by a motor to rotate, so that the solution and the carrier are in full contact and mixed evenly. This can ensure that the noble metals are uniformly attached to the surface and pores of the carrier, improving the activity and catalytic efficiency of the catalyst; a stable stirring process can ensure that the quality of each batch of produced catalysts is consistent and reduce the fluctuation of product quality;

[0007] In the prior art, in order to ensure high preparation efficiency, a large container volume is usually adopted to facilitate loading more catalyst carriers. Due to the differences in the characteristics of the catalyst materials and the solution, such as viscosity, density, etc., stratification or local aggregation may occur during the stirring process, and this phenomenon is more obvious in a large container volume;

[0008] Moreover, since a large container volume is adopted, it means that the depth and volume of the solution are relatively large, which will make it difficult to take out the catalyst carrier after it is mixed evenly. In view of this, the present invention provides a stirring device and a usage method for automotive three-way catalyst preparation to solve the above problems. Summary of the Invention

[0009] The object of the present invention is to solve the problem of insufficient stirring of the traditional stirring device for preparing automotive three-way catalysts.

[0010] To achieve the above object, the present invention provides the following basic solution:

[0011] A stirring device for preparing automotive three-way catalysts, comprising a base, a connection chamber, a top chamber fixedly connected in sequence from bottom to top, and an end cover member detachably connected to the top of the top chamber for sufficient mixing of the solution;

[0012] Liquid inlets and outlets are respectively arranged on both sides of the connection chamber. A lifting plate that can move into the top chamber is slidably connected inside the connection chamber, and an airbag assembly for the up and down movement of the lifting plate is arranged in the connection chamber;

[0013] The end cover member is provided with a driving member, a main stirring component driven by the driving member, and a secondary stirring component rotated by the main stirring component. An auxiliary member for full-layer stirring of the solution is arranged inside the top chamber to cooperate with the main stirring component. A rotating disk for the rotation of the catalyst carrier is arranged on the main stirring component, and the secondary stirring component acts on the solution around the rotating disk.

[0014] Further, the base, the connection chamber, and the top chamber are integrally formed. A plurality of support columns are arranged at the bottom of the base, and a plurality of anti-slip pads are arranged at the free ends of the support columns.

[0015] Further, the setting height of the liquid inlet is higher than the setting height of the liquid outlet. The airbag assembly includes an inflatable airbag and a connection port arranged on the inflatable airbag. An inflation port cooperating with the connection port is arranged outside the connection chamber. The inflatable airbag includes a fixed part and an expansion part. The fixed part is fixed at the bottom of the connection chamber, and the expansion part is fixedly connected to the lifting plate.

[0016] Further, a first sealing ring is arranged around the lifting plate, and a second sealing ring is arranged around the inside of the top chamber. The first sealing ring can contact the inner wall of the connection chamber and the second sealing ring.

[0017] Further, the driving member is a driving motor. A plurality of handles are arranged on the end cover member on the same side as the driving motor. A plurality of pins are arranged on one side of the end cover member away from the handles. A pin hole corresponding to each pin is arranged at the top of the top chamber, and the pin hole is detachably connected to the pin.

[0018] Further, it also includes a power distribution box arranged on the end cover member and connected to the output end of the driving motor. The main stirring component includes a main gear set arranged in the power distribution box, an extension shaft coaxially connected to the main gear set and connected to the rotating disk, a column arranged on the rotating disk, a sleeve detachably connected to the column for separating the catalyst carrier, and a contact column arranged on the outer periphery of the rotating disk.

[0019] Furthermore, the auxiliary part includes an annular circle fixed inside the top cavity, a sliding groove opened in the annular circle, and a full-layer stirring rod slidably connected in the sliding groove. The length of the full-layer stirring rod is equal to the depth of the top cavity.

[0020] Furthermore, the secondary stirring assembly includes a secondary gear set meshing with the main gear set arranged in the power distribution box, a stirring rod meshing with the secondary gear set, and a plurality of auxiliary rods fixed around the stirring rod. The action range of the auxiliary rods is around the rotating disk.

[0021] Based on a stirring device for preparing automotive three-way catalysts, this solution also discloses a method for using the stirring device for preparing automotive three-way catalysts:

[0022] It includes the following steps:

[0023] S01: Remove the end cover part, install the catalyst carrier on the rotating disk, and then install the end cover part;

[0024] S02: Inject the solution with precious metals through the liquid inlet and outlet, start the drive motor and the airbag assembly, and the mixing and stirring begin;

[0025] S03: After the mixing and stirring end, the airbag assembly exhausts, remove the end cover part again, and finally remove the catalyst carrier on the rotating disk.

[0026] Furthermore, the precious metals include platinum, rhodium, and palladium.

[0027] The principle and effect of this solution are as follows:

[0028] 1. Compared with the prior art, the structure of this device is simple and ingenious. This device is provided with an airbag assembly cooperating with a large-volume container. Since the large-volume container has a deep depth, for the solution, it also has a relatively deep depth. Since it is a solution with precious metals, it has certain corrosiveness and also has an impact on the human body. Therefore, this device is provided with an airbag assembly to realize the height change of the solution. When the solution is in use, the solution height rises, and when the solution is not in use, the solution height drops. By this measure, the use safety of this device is ensured.

[0029] 2. Compared with the prior art, this invention can achieve sufficient stirring. This device is provided with a main stirring assembly and a secondary stirring assembly. The main stirring assembly can not only realize the rotation of the catalyst carrier, but also, through the main stirring assembly, realize the stirring of the solution in the longitudinal direction, accelerating the full mixing of the solution, and thus solving the problem of insufficient stirring of the traditional stirring device for preparing automotive three-way catalysts.

[0030] 3. Compared with the prior art, the present device is provided with a main stirring component and a secondary stirring component. The secondary stirring component rotates based on the rotation of the main stirring component. The secondary stirring component is used in cooperation with the main stirring component to strengthen the mixing of the solution around the catalyst carrier, thereby solving the problem of insufficient stirring of the traditional stirring device for preparing automotive three-way catalysts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 shows a schematic structural diagram of a stirring device for preparing automotive three-way catalysts proposed in an embodiment of the present application;

[0033] Figure 2 shows a front view of a stirring device for preparing automotive three-way catalysts proposed in an embodiment of the present application;

[0034] Figure 3 shows a schematic position diagram of an auxiliary part in a stirring device for preparing automotive three-way catalysts proposed in an embodiment of the present application;

[0035] Figure 4 shows a schematic structural diagram of a secondary stirring component in a stirring device for preparing automotive three-way catalysts proposed in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and their effects according to the present invention as follows.

[0037] The reference numerals in the drawings of the specification include: base 1, support column 2, lifting plate 3, first sealing ring 4, inflatable airbag 5, inflation port 6, liquid inlet 7, connection cavity 8, top cavity 9, pin hole 10, end cover member 11, handle 12, drive motor 13, pin 14, annular circle 15, power distribution box 16, first sealing ring 17, extension shaft 18, rotating disk 19, contact column 20, sliding groove 21, full-layer stirring rod 22, sleeve 23, column 24, main gear set 25, first secondary gear set 26, second secondary gear set 27, stirring rod 28, auxiliary rod 29.

[0038] Embodiments are as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown:

[0039] A stirring device for preparing automotive three-way catalysts, comprising a base 1, a connection chamber 8, a top chamber 9 fixedly connected in sequence from bottom to top, and an end cap 11 detachably connected to the top of the top chamber 9 for sufficient mixing of the solution;

[0040] Regarding the base 1, the connection chamber 8, and the top chamber 9:

[0041] The base 1, the connection chamber 8, and the top chamber 9 are integrally formed. A plurality of support columns 2 are provided at the bottom of the base 1, and a plurality of anti-slip pads are provided at the free ends of the support columns 2.

[0042] Liquid inlets 7 and outlets are respectively provided on both sides of the connection chamber 8. The liquid inlets and outlets are used for the inlet and discharge of the solution. A lifting plate 3 that can move into the top chamber 9 is slidably connected inside the connection chamber 8. An airbag assembly for the up and down movement of the lifting plate 3 is provided inside the connection chamber 8;

[0043] Regarding the airbag assembly:

[0044] The setting height of the liquid inlet 7 is higher than that of the outlet, which is beneficial to the inlet and discharge of the liquid. The airbag assembly includes an inflatable airbag 5 and a connection port provided on the inflatable airbag 5. An inflation port 6 for cooperating with the connection port is provided outside the connection chamber 8. The inflatable airbag 5 includes a fixed part and an expansion part. The fixed part is fixed at the bottom of the connection chamber 8, and the expansion part is fixedly connected to the lifting plate 3.

[0045] Specifically:

[0046] The inflation port 6 cooperates with the connection port to inflate and deflate the inflatable airbag 5. When the inflatable airbag 5 is inflated, the inflatable airbag 5 expands. After the inflatable airbag 5 expands, the expansion part rises. Since the expansion part is fixedly connected to the lifting plate 3, the lifting plate 3 is driven to rise. Based on the rise and fall of the lifting plate 3, the rise and fall of the solution are realized;

[0047] Since the lifting plate 3 is used to hold the solution, strong sealing is required around the lifting plate 3. A first sealing ring 4 is provided around the lifting plate 3, and a second sealing ring is provided around the inner circumference of the top chamber 9. The first sealing ring 4 can contact the inner wall of the connection chamber 8 and the second sealing ring.

[0048] When the lifting plate 3 moves in the connection chamber 8, strong sealing is achieved using the first sealing ring 4. When the lifting plate 3 moves in the top chamber 9, strong sealing is achieved using the second sealing ring;

[0049] Since the lifting plate 3 can move from the connection chamber 8 into the top chamber 9, the solution can enter the top chamber 9 and return to the connection chamber 8;

[0050] The end cover member 11 is provided with a driving member, a main stirring assembly driven by the driving member, and a secondary stirring assembly rotated by the main stirring assembly. An auxiliary member for full-layer stirring of the solution is provided inside the top cavity 9 for use in conjunction with the main stirring assembly. A rotating disk 19 for rotating the catalyst carrier is provided on the main stirring assembly, and the secondary stirring assembly acts on the solution around the rotating disk 19.

[0051] The driving member is a driving motor 13. A plurality of handles 12 are provided on the end cover member 11 on the same side as the driving motor 13. A plurality of pins 14 are provided on one side of the end cover member 11 away from the handles 12. A plurality of pin holes 10 corresponding to the pins 14 one by one are provided on the top of the top cavity 9, and the pin holes 10 are detachably connected to the pins 14.

[0052] Specifically: It further includes a power distribution box 16 provided on the end cover member 11 and connected to the output end of the driving motor 13. The main stirring assembly includes a main gear set 25 provided in the power distribution box 16, an extension shaft 18 coaxially connected to the main gear set 25 and connected to the rotating disk 19, a column 24 provided on the rotating disk 19, a sleeve 23 detachably connected to the column 24 for separating the catalyst carriers, and contact columns 20 provided on the outer periphery of the rotating disk 19.

[0053] The driving motor 13 drives the extension shaft 18 to rotate, and the rotation of the extension shaft 18 drives the rotating disk 19 to rotate. The catalyst carriers are installed on the column 24, and adjacent catalyst carriers are separated by the sleeve 23.

[0054] When the rotating disk 19 rotates, the contact columns 20 rotate. The auxiliary member includes an annular circle 15 fixed inside the top cavity 9, a sliding groove 21 opened in the annular circle 15, and a full-layer stirring rod 22 slidably connected in the sliding groove 21. The length of the full-layer stirring rod 22 is equal to the depth of the top cavity 9.

[0055] The contact columns 20 contact the full-layer stirring rod 22 and push the full-layer stirring rod 22 to slide in the sliding groove 21. Since the length of the full-layer stirring rod 22 is equal to the depth of the top cavity 9, the full-layer stirring rod 22 is used to act on the solution, making the solution fully mixed.

[0056] For the catalyst carriers, since the rotating disk 19 rotates to make the catalyst carriers rotate, and since the full-layer stirring rod 22 makes a circular motion, the solution is in a dynamic stirring process.

[0057] The secondary stirring assembly includes a secondary gear set provided in the power distribution box 16 and meshing with the main gear set 25, a stirring rod 28 meshing with the secondary gear set, and a plurality of auxiliary rods 29 fixed around the stirring rod 28. The acting range of the auxiliary rods 29 is around the rotating disk 19. The secondary gear set includes a first secondary gear set 26 and a second secondary gear set 27.

[0058] As the main gear set 25 rotates, the auxiliary gear set meshing with the main gear set 25 rotates. After the auxiliary gear set rotates, the stirring rod 28 rotates. When the stirring rod 28 rotates, the auxiliary rod 29 rotates. Since the range of action of the auxiliary rod 29 is around the rotating disk 19, and because the catalyst carrier is installed on the rotating disk 19, the solution around the catalyst carrier is fully mixed and stirred by the auxiliary rod 29, making the contact with the catalyst carrier more sufficient.

[0059] Based on the stirring device for preparing automotive three-way catalysts, this embodiment also discloses a usage method of the stirring device for preparing automotive three-way catalysts, including the following steps:

[0060] S01: Remove the end cover member 11, install the catalyst carrier on the rotating disk, use the sleeve 23 to separate the catalyst carriers, and then install and fix the end cover member 11.

[0061] S02: Inject the solution with precious metals through the liquid inlet 7 and the liquid outlet. The precious metals include platinum, rhodium, and palladium. Start the drive motor 13 and the airbag assembly. The airbag assembly drives the height of the solution to rise, enters the top cavity 9, and submerges the rotating disk and the catalyst carrier on the rotating disk. The drive motor 13 starts the mixing and stirring and begins to fully contact with the solution.

[0062] S03: After waiting for a certain period of time, the mixing and stirring ends. Turn off the drive motor 13, and the airbag assembly exhausts. The airbag assembly drives the height of the solution to drop, returns to the connection cavity 8, remove the end cover member 11 again, and finally remove the catalyst carrier on the rotating disk.

[0063] Finally, when the solution is no longer in use, open the liquid outlet to collect the solution with precious metals after use. Similarly, the liquid inlet 7 can also be opened to supplement the solution with precious metals.

[0064] This device solves the problem of insufficient stirring of the traditional stirring device for preparing automotive three-way catalysts.

[0065] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the above-disclosed technical content without departing from the technical solution of the present invention. However, as long as it does not depart from the technical solution content of the present invention, any brief modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A stirring device for preparing a three-way catalyst for automobiles and a method for using the same, characterized in that: It comprises a base, a connecting cavity, a top cavity and a detachably connected end cover for fully mixing the solution at the top of the top cavity, which are fixedly connected in sequence from bottom to top; A liquid inlet and a liquid outlet are respectively provided on both sides of the connecting cavity, a lifting plate that can be moved into the top cavity is slidably connected inside the connecting cavity, and an airbag assembly for the lifting plate to move up and down is provided in the connecting cavity; The end cover is provided with a driving member, a main stirring component driven by the driving member, and a secondary stirring component rotated based on the main stirring component. The top cavity is provided with an auxiliary component for stirring the entire layer of the solution in cooperation with the main stirring component. The main stirring component is provided with a rotating disk for rotating the catalyst carrier, and the secondary stirring component acts on the solution around the rotating disk.

2. The stirring device for preparing a three-way catalyst for an automobile according to claim 1, characterized in that: The base, the connecting cavity and the top cavity are integrally formed, a plurality of supporting columns are arranged at the bottom of the base, and a plurality of anti-slip pads are arranged at the free ends of the supporting columns.

3. The stirring device for preparing automobile three-way catalyst according to claim 1, characterized in that: The setting height of the liquid inlet is higher than the setting height of the liquid outlet. The airbag assembly includes an inflatable airbag and a connecting port arranged on the inflatable airbag. The outside of the connecting cavity is provided with an inflation port used in conjunction with the connecting port. The inflatable airbag includes a fixed part and an expansion part. The fixed part is fixed to the bottom of the connecting cavity, and the expansion part is fixedly connected to the lifting plate.

4. The stirring device for preparing a three-way catalyst for automobile according to claim 3, characterized in that: A first sealing ring is arranged around the lifting plate, and a second sealing ring is arranged around the inside of the top cavity. The first sealing ring can contact the inner wall of the connecting cavity and the second sealing ring.

5. The stirring device for preparing automobile three-way catalyst according to claim 4, characterized in that: The driving member is a driving motor, and a plurality of handles are arranged on the end cover member on the same side of the driving motor, a plurality of latches are arranged on the side of the end cover member away from the handles, and latch holes corresponding to the latches are arranged at the top of the top cavity, and the latch holes are detachably connected to the latches.

6. The stirring device for preparing automobile three-way catalyst according to claim 5, characterized in that: It also includes a power distribution box arranged on the end cover and connected to the output end of the driving motor. The main stirring assembly includes a main gear set arranged in the power distribution box, an extension shaft coaxially connected to the main gear set and connected to the rotating disk, a column arranged on the rotating disk, a sleeve for separating catalyst carriers detachably connected to the column, and a contact column arranged on the outer periphery of the rotating disk.

7. The stirring device for preparing automobile three-way catalyst according to claim 6, characterized in that: The auxiliary part comprises an annular ring fixed inside the top cavity, a sliding groove opened in the annular ring and a full-layer stirring rod slidably connected in the sliding groove, and the length of the full-layer stirring rod is equal to the depth of the top cavity.

8. The stirring device for preparing automobile three-way catalyst according to claim 7, characterized in that: The auxiliary stirring assembly includes an auxiliary gear set meshed with the main gear set arranged in the power distribution box, a stirring rod meshed with the auxiliary gear set, and a plurality of auxiliary rods fixed around the stirring rod, and the auxiliary rods have an action range around the rotating disk.

9. A method for using the stirring device for preparing an automobile three-way catalyst according to claim 8, characterized in that: The following steps are involved: S01: Remove the end cover, install the catalyst carrier on the rotating disk, and then install the end cover; S02: The solution containing precious metals is injected into the liquid inlet and the liquid outlet, the driving motor and the airbag assembly are started, and mixing and stirring begins; S03: After the mixing and stirring is completed, the airbag assembly is vented, the end cover is removed again, and finally the catalyst carrier on the rotating disk is removed.

10. The method for using the stirring device for preparing automobile three-way catalyst according to claim 9, characterized in that: The noble metals include platinum, rhodium and palladium.

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