A heat treatment device for binary PtRh3 catalytic net production

Abstract

The present invention discloses a heat treatment device for the production of binary PtRh3 catalytic mesh, which belongs to the technical field of heat treatment of precious metal catalytic mesh; the heat treatment device comprises a body and a furnace installed inside the body, a bracket for supporting the catalytic mesh is installed inside the furnace, a frame is equidistantly rotatably installed inside the bracket, a connecting frame is symmetrically rotatably installed inside the frame, clamping assemblies are symmetrically installed on the inner wall of the connecting frame, and the two groups of clamping assemblies alternately clamp the catalytic mesh; first air channels are equidistantly opened at the bottom end of the bracket, and gas injection nozzles are equidistantly fixedly installed at the bottom end of the inner wall of the furnace, the first air channel is connected to the gas injection nozzle, a driving assembly is installed inside the first air channel, a connecting assembly is installed inside the frame, and the connecting assembly is installed in coordination with the connecting frame; this device can ensure that the protective gas fully and evenly covers the catalytic mesh, thereby improving the overall catalytic performance and stability of the catalytic mesh.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of precious metal catalytic mesh heat treatment, and particularly relates to a heat treatment device for binary PtRh3 catalytic mesh production. BACKGROUND

[0002] The binary PtRh3 catalytic mesh is an alloy catalytic mesh taking platinum (Pt) and rhodium (Rh) as main components, wherein the content of rhodium is usually 3%, and the rest is platinum. The catalytic mesh has excellent catalytic activity, selectivity and stability due to the unique physical and chemical properties of platinum and rhodium, plays a key role in ammonia oxidation for nitric acid and organic synthesis catalysis, and can significantly improve the reaction rate and reduce the reaction energy consumption, and is an indispensable core component in many chemical production processes. However, the heat treatment link in the production process is crucial, which directly affects the microstructure, active site distribution and service life of the catalytic mesh.

[0003] In the existing binary PtRh3 catalytic mesh production, the traditional heat treatment device has a series of problems to be solved. In the aspect of protection gas circulation, the traditional catalytic mesh generally adopts a hanging rack installation method. This installation structure makes it difficult for the protection gas to uniformly and fully contact the surface of the catalytic mesh when flowing in the furnace. Due to the fact that the protection gas cannot effectively cover the entire surface of the catalytic mesh, oxidation and other adverse reactions are prone to occur in some areas of the catalytic mesh during high-temperature heat treatment, which leads to the decline of the catalytic mesh performance and affects the catalytic effect in subsequent chemical reactions.

[0004] In the aspect of uniform heating, the existing furnace resistance wire distribution has limitations. Generally, the resistance wires are only arranged on the upper and lower and left and right inner walls of the furnace, and there is lack of heating sources in the front and back directions. When the binary PtRh3 catalytic mesh just enters the furnace, the catalytic mesh located in the middle part is far from the resistance wires, and the received heat is quite different, which is prone to uneven heating. Uneven heating will cause thermal stress in the catalytic mesh, leading to structural deformation, and also cause uneven distribution of active sites on the surface of the catalytic mesh, which reduces the overall catalytic performance and stability of the catalytic mesh.

[0005] In the aspect of clamping and drying, the traditional clamping method makes the clamping point area of the catalytic mesh in a long-term blocked state during the drying process, which makes it difficult for the area to fully contact with hot air, resulting in that the moisture and volatile substances in these parts cannot be effectively evaporated and discharged. The long-term residual moisture and volatile substances will affect the microstructure of the catalytic mesh, and even may cause catalyst poisoning and other problems in subsequent use, which seriously shortens the service life of the catalytic mesh. SUMMARY

[0006] The application overcomes the shortcomings of the prior art and provides a heat treatment device for binary PtRh3 catalytic mesh production.

[0007] A heat treatment device for the production of binary PtRh3 catalytic mesh comprises a body and a furnace installed inside the body, a resistance wire is provided on the inside of the furnace; a bracket for supporting the binary PtRh3 catalytic mesh is installed inside the furnace, a plurality of frames are equidistantly rotatably installed inside the bracket, a connecting frame is symmetrically rotatably installed inside the frame, two groups of clamping assemblies are symmetrically installed on the inner wall of the connecting frame, and the two groups of clamping assemblies alternately clamp the binary PtRh3 catalytic mesh; a plurality of first air channels are equidistantly opened at the bottom end of the bracket, and a plurality of gas injection nozzles are equidistantly fixedly installed at the bottom end of the inner wall of the furnace, the first air channels are connected to the gas injection nozzles one by one, a driving assembly is installed inside the first air channel, and the driving assembly is used to drive the frame to rotate; a connecting assembly is installed inside the frame, and the connecting assembly is installed in coordination with the connecting frame.

[0008] Furthermore, a second air channel is opened inside the frame, a third air channel is opened inside the connecting frame, and the first air channel, the second air channel and the third air channel are interconnected.

[0009] Furthermore, exhaust holes are provided on the inner wall of the frame and the upper and lower inner walls of the connecting frame. The exhaust holes on the inner wall of the frame are connected to the second air duct, and the exhaust holes on the upper and lower inner walls of the connecting frame are connected to the third air duct.

[0010] Furthermore, the drive assembly includes a transmission shaft, a worm, a worm wheel, a square groove, a second spring, a transmission rod, a conical friction groove and a drive shaft. The inner wall of the first air duct is rotatably connected to the transmission shaft, one end of the transmission shaft is symmetrically fixedly connected to the worm, the bottom end of the frame is fixedly connected to the worm wheel, the worm and the worm wheel are meshingly connected, one end of the transmission shaft is provided with a square groove, the inner wall of the square groove is fixedly connected to the second spring, the inner wall of the square groove is slidably connected to the transmission rod, one end of the transmission rod is fixedly connected to one end of the second spring, a conical friction groove is provided at the end of the transmission rod away from the second spring, the drive shaft is equidistantly installed on the bottom end of the inner wall of the furnace, and one end of the drive shaft is conically frosted; the conical frosted end of the drive shaft cooperates with the conical friction groove; the outer wall of the furnace is fixedly connected to the motor, and the output end of the motor is fixed to the other end of the drive shaft.

[0011] Further, the clamping assembly comprises a first driving disc, a second driving disc, a bevel gear ring, an extension rod, a first bevel gear, a special-shaped sliding groove, a first push rod, a second push rod, a push column, a first groove, a first spring and a T-shaped push block; the first driving disc and the second driving disc are symmetrically and rotationally connected to the inside of the connecting frame, the first driving disc and the second driving disc are fixedly connected with the bevel gear ring at the end close to each other, the extension rod is fixedly connected to the inside of the second air duct, the first bevel gear is fixedly connected to one end of the extension rod, the shaft center of the first bevel gear coincides with the shaft center of the connecting place of the frame and the connecting frame, the first bevel gear is meshingly connected with the two bevel gear rings respectively, the first driving disc and the second driving disc are provided with the special-shaped sliding groove at the end away from each other, the first push rod and the second push rod are slidingly connected to the inside of the connecting frame at equal intervals, the first push rod and the second push rod are fixedly connected with the push column at one end, the first push rod is slidingly connected with the special-shaped sliding groove on the first driving disc through the corresponding push column, the second push rod is slidingly connected with the special-shaped sliding groove on the second driving disc through the corresponding push column; the first push rod and the second push rod are provided with the first groove at one end, the first spring is fixedly connected to the inner wall of the first groove, and the T-shaped push block is slidingly connected to the inner wall of the first groove, and one end of the first spring is fixedly connected with one end of the T-shaped push block.

[0012] Further, the special-shaped sliding groove is composed of a plurality of V-shaped grooves connected in a head-to-tail mode, and the included angle between the two ends of one of the V-shaped grooves and the center of the connecting frame is 20 degrees, and the axial included angle of the two groups of special-shaped sliding grooves is 10 degrees.

[0013] Further, the connecting assembly comprises a first connecting column, a first connecting wheel, a second connecting column, a second connecting wheel, a second bevel gear and a third bevel gear; the first connecting column is rotationally connected to the shaft center of the top end of the frame, the top end of the first connecting column is fixedly connected with the top end of the support, the bottom end of the first connecting column is fixedly connected with the first connecting wheel, the second connecting column is rotationally connected to the inside of the second air duct, the top end of the second connecting column is fixedly connected with the second connecting wheel, the first connecting wheel and the second connecting wheel are drivingly connected through the steel wire rope, the two second bevel gears are fixedly connected to one end of the second connecting column respectively, the third bevel gear is fixedly connected to the connecting place of the connecting frame and the frame, and the second bevel gear and the third bevel gear are meshingly connected.

[0014] Further, the two ends of the support are symmetrically provided with the connecting sliding grooves, the connecting sliding strips are symmetrically fixedly connected to the inner wall of the hearth, and the connecting sliding strips are slidingly connected with the connecting sliding grooves.

[0015] Further, the support is slidingly connected with the bolt at one corner, the insertion slot is formed in the inner wall of the bottom end of the hearth, and the bolt is inserted into the insertion slot.

[0016] The beneficial effects of the present application relative to the prior art are:

[0017] In terms of protection gas flow and catalytic net protection, the inner wall of the frame and the upper and lower inner walls of the connecting frame in the device are provided with exhaust holes, and the first gas channel, the second gas channel and the third gas channel are connected with each other, so that the protection gas can enter the first gas channel through the gas injection nozzle, and then pass through the second gas channel and the third gas channel to blow the surface of the binary PtRh3 catalytic net at multiple angles from the exhaust holes. Compared with the traditional hanging rack installation method, this structure can ensure that the protection gas fully and uniformly covers the catalytic net, effectively isolates oxygen during high-temperature heat treatment, avoids oxidation of the catalytic net, and greatly improves the performance stability and service life of the catalytic net.

[0018] In terms of uniformity of heating, the driving assembly drives the frame to rotate around its axis, and the connecting assembly further drives the connecting frame to rotate, so that the binary PtRh3 catalytic net can not only rotate around the axis of the frame, but also rotate along the connecting part of the connecting frame and the frame. This multi-angle and multi-directional rotation movement breaks the problem of uneven heating of the catalytic net in traditional devices. Even if the distribution of the furnace resistance wire is uneven, the catalytic net can receive heat in all directions during continuous rotation, effectively eliminating thermal stress, ensuring the stability of the catalytic net structure, and uniformly distributing the surface active sites, thereby significantly improving the overall catalytic performance and stability of the catalytic net.

[0019] In the clamping and drying process, the two groups of T-shaped push blocks with different heights in the clamping assembly are matched through structures such as special-shaped sliding grooves and bevel gears, to realize alternating clamping of the binary PtRh3 catalytic net. During the drying process, one group of T-shaped push blocks moves away from each other, and the other group of T-shaped push blocks moves close to each other to form clamping, thereby avoiding the problem that the clamping point of the catalytic net cannot be effectively dried for a long time in the traditional clamping method. This alternating clamping design ensures that every part of the surface of the catalytic net can be in full contact with hot air, accelerating the emission of moisture and volatile substances. On the one hand, the rotational movement of the catalytic net promotes the formation of strong convection of hot air, accelerating the diffusion of moisture; on the other hand, uniform heating enables moisture to efficiently migrate from the inside to the surface and evaporate, greatly shortening the drying time, reducing energy consumption, and significantly improving production efficiency.

[0020] In addition, the linkage design between the components of the device, such as the driving of the frame by the driving assembly, the movement of the connecting frame based on the rotation of the frame by the connecting assembly, and the alternating clamping of the clamping assembly under the rotation of the connecting frame, forms a complete and efficient operation system. This cooperative working mode not only solves the single function defect of the traditional device, but also realizes the complex movement of the catalytic net during the heat treatment process through the ingenious design of mechanical transmission, providing a reliable guarantee for the high-quality production of the binary PtRh3 catalytic net. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the furnace structure of the present application;

[0023] Figure 3 The structure diagram of the back of the furnace of the present application;

[0024] Figure 4 The structure diagram of the inside of the furnace and the support of the present application;

[0025] Figure 5 The structure diagram of the support and the frame of the present application;

[0026] Figure 6 The structure diagram of the frame and the connecting frame of the present application;

[0027] Figure 7 The structure diagram of the first driving disc and the second driving disc of the present application;

[0028] Figure 8 The structure diagram of the second driving disc of the present application;

[0029] Figure 9 The structure diagram of the second driving disc and the T-shaped pushing block of the present application;

[0030] Figure 10 The structure diagram of the bottom of the support of the present application;

[0031] Figure 11 The structure diagram of the driving shaft of the present application;

[0032] Figure 12 The structure diagram of the driving shaft of the present application;

[0033] Figure 13 The structure diagram of the driving shaft of the present application; Figure 6 The enlarged view of A in the above figure;

[0034] Figure 14 The enlarged view of B in the above figure; Figure 6 The enlarged view of C in the above figure;

[0035] Figure 15 The enlarged view of D in the above figure; Figure 10 The enlarged view of C in the above figure;

[0036] Figure 16 The enlarged view of D in the above figure. Figure 9 The enlarged view of D in the above figure.

[0037] In the figure: 1, body; 2, hearth; 3, support; 4, frame; 5, connecting frame; 6, first air channel; 7, second air channel; 8, third air channel; 9, connecting chute; 10, connecting slide; 11, bolt; 12, slot; 13, gas injection nozzle; 31, first drive disc; 32, second drive disc; 33, bevel gear ring; 34, extension rod; 35, first bevel gear; 36, profiled chute; 37, first push rod; 38, second push rod; 39, knob; 310, first recess; 311, first spring; 312, T-shaped push block; 41, transmission shaft; 42, worm; 43, worm gear; 44, square slot; 45, second spring; 46, transmission rod; 47, conical friction slot; 48, drive shaft; 51, first connecting column; 52, first connecting wheel; 53, second connecting column; 54, second connecting wheel; 55, second bevel gear; 56, third bevel gear. DETAILED DESCRIPTION

[0038] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clear, the present application is further described in detail in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. The technical solutions of the present application are described in detail below in combination with embodiments and drawings, but the protection scope is not limited thereto.

[0039] Referring to Figures 1 to 16 The embodiment provides a heat treatment device for binary PtRh3 catalytic net production, which comprises a body 1 and a hearth 2 installed in the body 1. The hearth 2 is an existing heating device, and an electric resistance wire is arranged on the inner side of the hearth 2.

[0040] A support 3 for supporting the binary PtRh3 catalytic net is arranged in the furnace 2, a plurality of frames 4 are arranged in the support 3 in equidistant rotation, a connecting frame 5 is arranged in the frame 4 in symmetrical rotation, two sets of clamping assemblies are arranged on the inner wall of the connecting frame 5 in symmetry, and the two sets of clamping assemblies alternately clamp the binary PtRh3 catalytic net, a plurality of first air channels 6 are arranged at the bottom end of the support 3 in equidistance, a plurality of gas injection nozzles 13 are fixedly arranged on the inner wall of the furnace 2 at the bottom end in equidistance, the first air channels 6 are in one-to-one connection with the gas injection nozzles 13, a driving assembly is arranged in the first air channel 6, the driving assembly is used to drive the frame 4 to rotate, a connecting assembly is arranged in the frame 4, the connecting assembly is arranged in cooperation with the connecting frame 5, a second air channel 7 is arranged in the frame 4, a third air channel 8 is arranged in the connecting frame 5, the first air channel 6, the second air channel 7 and the third air channel 8 are in communication with each other, the exhaust holes are arranged on the inner wall of the frame 4 and the upper and lower inner walls of the connecting frame 5, the exhaust holes on the inner wall of the frame 4 are in communication with the second air channel 7, and the exhaust holes arranged on the upper and lower inner walls of the connecting frame 5 are in communication with the third air channel 8. The two ends of the support 3 are symmetrically provided with connecting sliding grooves 9, the inner wall of the furnace 2 is symmetrically fixedly connected with connecting sliding strips 10, the connecting sliding strips 10 are in sliding connection with the connecting sliding grooves 9, the support 3 is in sliding connection with a bolt 11 at a corner, the inner wall of the bottom end of the furnace 2 is provided with a slot 12, and the bolt 11 is in insertion connection with the slot 12.

[0041] Since there are resistance wires on the upper and lower left and right walls of the furnace 2, there are no resistance wires on the front and back walls of the furnace 2, therefore, when the binary PtRh3 catalytic net just enters the furnace 2, the binary PtRh3 catalytic net located in the middle may be unevenly heated. The exhaust holes are arranged on the inner wall of the frame 4 and the upper and lower inner walls of the connecting frame 5, thereby better protecting the binary PtRh3 catalytic net from being blown by the protective gas from various angles.

[0042] Please refer to Figure 6 , 12 and Figure 15 , the driving assembly comprises a transmission shaft 41, a worm 42, a worm wheel 43, a square groove 44, a second spring 45, a transmission rod 46, a conical friction groove 47 and a driving shaft 48, the transmission shaft 41 is in rotation connection with the inner wall of the first air channel 6, the one end of the transmission shaft 41 is fixedly connected with the worm 42 in symmetry, the bottom end of the frame 4 is fixedly connected with the worm wheel 43, the worm 42 is in meshing connection with the worm wheel 43, the one end of the transmission shaft 41 is provided with the square groove 44, the inner wall of the square groove 44 is fixedly connected with the second spring 45, the square groove 44 is in sliding connection with the transmission rod 46, the one end of the transmission rod 46 is fixedly connected with the one end of the second spring 45, the end of the transmission rod 46 away from the second spring 45 is provided with the conical friction groove 47, the driving shaft 48 is equidistantly arranged on the bottom end of the inner wall of the furnace 2, and the one end of the driving shaft 48 is designed in conical sanding; the one end of the conical sanding of the driving shaft 48 is matched with the conical friction groove 47; the outer wall of the furnace 2 is fixedly connected with a motor, and the output end of the motor is fixedly connected with the other end of the driving shaft 48.

[0043] When the motor drives the driving shaft 48 to rotate, the one end of the driving shaft 48 in the conical grinding sand is in contact with the conical friction groove 47, so that the transmission shaft 41 rotates; the transmission shaft 41 drives the worm 42 to rotate, and then drives the worm gear 43 at the bottom end of the frame 4 to rotate, at this time the frame 4 rotates along its own axis, at this time the binary PtRh3 catalytic net also rotates along the axis of the frame 4, and then fully receives the heat generated by the resistance wire on the inner wall of the furnace 2.

[0044] Please refer to Figure 7 、 8 、9 and Figure 16 , the clamping assembly comprises a first driving disc 31, a second driving disc 32, a bevel gear ring 33, an extension rod 34, a first bevel gear 35, a special-shaped sliding groove 36, a first push rod 37, a second push rod 38, a push column 39, a first recess 310, a first spring 311 and a T-shaped push block 312; the inside of the connecting frame 5 is symmetrically rotationally connected with the first driving disc 31 and the second driving disc 32, and the ends of the first driving disc 31 and the second driving disc 32 close to each other are fixedly connected with the bevel gear ring 33; the inside of the second air duct 7 is fixedly connected with the extension rod 34, one end of the extension rod 34 is fixedly connected with the first bevel gear 35, the axis of the first bevel gear 35 coincides with the axis of the connecting place of the frame 4 and the connecting frame 5, the first bevel gear 35 is meshingly connected with the two bevel gear rings 33 respectively, the ends of the first driving disc 31 and the second driving disc 32 away from each other are provided with the special-shaped sliding groove 36, the inside of the connecting frame 5 is slidably connected with the first push rod 37 and the second push rod 38 at equal intervals, one end of the first push rod 37 and the second push rod 38 is fixedly connected with the push column 39, the first push rod 37 is slidably connected with the special-shaped sliding groove 36 on the first driving disc 31 through the corresponding push column 39, and the second push rod 38 is slidably connected with the special-shaped sliding groove 36 on the second driving disc 32 through the corresponding push column 39; one end of the first push rod 37 and the second push rod 38 is provided with the first recess 310, the first recess 310 is fixedly connected with the first spring 311, the first recess 310 is slidably connected with the T-shaped push block 312, one end of the first spring 311 is fixedly connected with one end of the T-shaped push block 312, the special-shaped sliding groove 36 is composed of a plurality of V-shaped grooves connected end to end, and the included angle between the two ends of one of the V-shaped grooves and the center of the connecting frame 5 is 20 degrees, and the axial included angle of the two groups of special-shaped sliding grooves 36 is 10 degrees.

[0045] Since the connecting frame 5 rotates along the frame 4, the extension rod 34 and the first bevel gear 35 are fixed structures compared with the connecting frame 5, and as the connecting frame 5 rotates, the two bevel gear rings 33 rotate along the axis of the first bevel gear 35.

[0046] The special-shaped sliding grooves 36 on the first driving disc 31 and the second driving disc 32 drive the second push rods 38 and the push columns 39 of different heights to reciprocate along the center of the connecting frame 5 respectively.

[0047] When the plunger 39 moves to the middle of the single V-shaped groove, several T-shaped pushers 312 clamp the binary PtRh3 catalytic net simultaneously, and as the first driving disc 31 and the second driving disc 32 rotate, one group of T-shaped pushers 312 move away from each other along the center of the connecting frame 5, and the other group of T-shaped pushers 312 move towards each other along the center of the connecting frame 5 to form clamping. By replacing the clamping of the two groups of T-shaped pushers 312, it is avoided that the binary PtRh3 catalytic net is always not dried at the clamping point during the drying process.

[0048] Please refer to Figures 13-14 The connecting assembly comprises a first connecting column 51, a first connecting wheel 52, a second connecting column 53, a second connecting wheel 54, a second bevel gear 55 and a third bevel gear 56; the first connecting column 51 is rotatably connected to the top end of the frame 4, the top end of the first connecting column 51 is fixedly connected to the top end of the support 3, the bottom end of the first connecting column 51 is fixedly connected with the first connecting wheel 52, the second connecting column 53 is rotatably connected inside the second air duct 7, the top end of the second connecting column 53 is fixedly connected with the second connecting wheel 54, the first connecting wheel 52 and the second connecting wheel 54 are drivingly connected by a steel wire rope, one end of the second connecting column 53 is fixedly connected with two second bevel gears 55, the connecting frame 5 is fixedly connected with the third bevel gear 56 at the connecting position with the frame 4, and the second bevel gears 55 are meshingly connected with the third bevel gear 56.

[0049] As the frame 4 continuously rotates, the first connecting wheel 52 on the first connecting column 51 rotates relative to the frame 4 because the first connecting column 51 is fixed to the top of the support 3. Through the transmission of the steel wire rope, the second connecting wheel 54 rotates, and the second connecting column 53 rotates driven by the second connecting wheel 54.

[0050] Since the connecting frame 5 is rotatably connected to the frame 4, and the third bevel gear 56 is fixedly connected at the connecting position of the connecting frame 5 and the frame 4, the third bevel gear 56 rotates driven by the second bevel gears 55, and the connecting frame 5 rotates in turn. At this time, the binary PtRh3 catalytic net not only rotates at the center of the frame 4, but also rotates along the connecting position of the connecting frame 5 and the frame 4.

[0051] Rotation enables moisture and volatile substances on the surface of the binary PtRh3 catalytic net to be dispersed more quickly. On the one hand, rotation promotes the formation of stronger convection of hot air around the binary PtRh3 catalytic net, accelerating the diffusion of moisture. On the other hand, uniform heating also enables moisture to migrate more efficiently from the inside of the binary PtRh3 catalytic net to the surface and evaporate. Just as stirring hot water can accelerate its heat dissipation, rotation speeds up the drying process and saves drying time and energy.

[0052] The working principle of the heat treatment device for binary PtRh3 catalytic net production provided in the embodiment is as follows:

[0053] First, the support 3 is taken out from the inside of the hearth 2, and then the binary PtRh3 catalytic nets are respectively placed in the inside of the connecting frame 5. The binary PtRh3 catalytic nets are fixed by the two groups of T-shaped push blocks 312 with different heights arranged in the inside of the connecting frame 5. Since the initial state of the push rods 39 is in the middle of the V-shaped groove, the pushing force provided by the two groups of T-shaped push blocks 312 with different heights is the same. Finally, the support 3 is installed in the inside of the hearth 2 through the connecting sliding groove 9 along the connecting sliding strip 10, and then the bolt 11 is inserted into the insertion slot 12. At this time, the gas injection nozzle 13 abuts against one end of the first gas channel 6, and the two form a channel (convenient for the inflow of protective gas in the later period). At the same time, the transmission shaft 41 drives the transmission rod 46 to extrude the drive shaft 48, and the second spring 45 is compressed, so that the drive shaft 48 rotates to drive the transmission rod 46 to rotate.

[0054] When the motor drives the drive shaft 48 to rotate, the conical ground end of the drive shaft 48 is in contact with the conical friction groove 47, so that the transmission shaft 41 rotates, the transmission shaft 41 drives the worm 42 to rotate, and then the worm 42 drives the worm gear 43 at the bottom end of the frame 4 to rotate. At this time, the frame 4 rotates along its own axis, and the binary PtRh3 catalytic net also rotates along the axis of the frame 4, thereby fully receiving the heat generated by the resistance wire on the inner wall of the hearth 2 (the binary PtRh3 catalytic net needs to be cleaned by hydrochloric acid or organic solvent before entering the hearth 2, and there are resistance wires on the upper, lower, left and right walls of the hearth 2, and there are no resistance wires on the front and back walls of the hearth 2. Therefore, when the binary PtRh3 catalytic net just enters the hearth 2, the binary PtRh3 catalytic net in the middle may be unevenly heated, and the traditional binary PtRh3 catalytic net is generally installed on a hanger. When the protective gas is injected, the protective gas cannot well contact the surface of the binary PtRh3 catalytic net), and the inner wall of the frame 4 and the upper and lower inner walls of the connecting frame 5 are designed with exhaust holes, so that the binary PtRh3 catalytic net is better blown by the protective gas from various angles.

[0055] With the continuous rotation of the frame 4, since the first connecting column 51 is fixed at the top of the support 3, when the frame 4 rotates continuously, the first connecting wheel 52 on the first connecting column 51 forms relative rotation with the frame 4, and then drives the second connecting wheel 54 to rotate through the transmission of the steel wire rope, the second connecting wheel 54 drives the second connecting column 53 to rotate, and the second connecting column 53 drives the two second bevel gears 55 to rotate respectively, since the connecting frame 5 is rotationally connected with the frame 4, and the third bevel gear 56 is fixedly connected at the connecting position of the connecting frame 5 and the frame 4, the second bevel gear 55 drives the third bevel gear 56 to rotate, thereby driving the connecting frame 5 to rotate, at this time, the binary PtRh3 catalytic net not only rotates at the axis of the frame 4, but also rotates along the connecting position of the connecting frame 5 and the frame 4, the rotation enables the moisture and volatile substances on the surface of the binary PtRh3 catalytic net to be discharged more quickly, on the one hand, the rotation promotes the formation of more intense convection of hot air around the binary PtRh3 catalytic net, thereby accelerating the diffusion of moisture; on the other hand, uniform heating also enables the moisture to be more efficiently migrated from the inside of the binary PtRh3 catalytic net to the surface and evaporated, just like stirring hot water can accelerate its heat dissipation, the drying process is accelerated, and the drying time and energy are saved.

[0056] Since the connecting frame 5 rotates along the frame 4, the extension rod 34 and the first bevel gear 35 are in a fixed state relative to the connecting frame 5, with the rotation of the connecting frame 5, the two bevel gear rings 33 rotate along the axis of the first bevel gear 35, and the special-shaped sliding grooves 36 on the first driving disc 31 and the second driving disc 32 drive the second push rods 38 and the push columns 39 of different heights to reciprocate along the center of the connecting frame 5 respectively, when the push column 39 moves to the middle of the single V-shaped groove, the T-shaped push blocks 312 simultaneously clamp the binary PtRh3 catalytic net, with the rotation of the first driving disc 31 and the second driving disc 32, one group of T-shaped push blocks 312 moves away from each other along the center of the connecting frame 5, and the other group of T-shaped push blocks 312 moves close to each other along the center of the connecting frame 5 to form clamping, through the replacement of clamping by the two groups of T-shaped push blocks 312, the problem that the clamping point of the binary PtRh3 catalytic net is not dried all the time in the drying process is avoided.

[0057] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms “comprises”, “comprising” or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0058] The above is further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed as limitation of the specific embodiments of the present application. For those skilled in the art of the present application, without departing from the present application, a number of simple deductions or substitutions can be made, which shall be deemed to belong to the present application, and the patent protection scope is determined by the submitted claims.

Claims

1. A heat treatment device for producing a binary PtRh3 catalytic mesh, comprising a body (1) and a furnace (2) installed inside the body (1), wherein a resistance wire is provided inside the furnace (2); characterized in that: A bracket (3) for supporting a binary PtRh3 catalytic mesh is installed inside the furnace (2), a plurality of frames (4) are equidistantly installed in rotation inside the bracket (3), a connecting frame (5) is symmetrically installed in rotation inside the frame (4), two groups of clamping components are symmetrically installed on the inner wall of the connecting frame (5), and the two groups of clamping components alternately clamp the binary PtRh3 catalytic mesh; a plurality of first air channels (6) are equidistantly opened at the bottom end of the bracket (3), and a plurality of gas injection nozzles (13) are equidistantly fixedly installed at the bottom end of the inner wall of the furnace (2), the first air channels (6) are connected to the gas injection nozzles (13) one by one, a driving component is installed inside the first air channel (6), and the driving component is used to drive the frame (4) to rotate; a connecting component is installed inside the frame (4), and the connecting component is installed in conjunction with the connecting frame (5); A second air passage (7) is provided inside the frame (4), a third air passage (8) is provided inside the connecting frame (5), and the first air passage (6), the second air passage (7) and the third air passage (8) are connected to each other; exhaust holes are provided on the inner wall of the frame (4) and the upper and lower inner walls of the connecting frame (5); the exhaust holes on the inner wall of the frame (4) are connected to the second air passage (7), and the exhaust holes on the upper and lower inner walls of the connecting frame (5) are connected to the third air passage (8); The driving assembly includes a transmission shaft (41), a worm (42), a worm wheel (43), a square groove (44), a second spring (45), a transmission rod (46), a conical friction groove (47) and a driving shaft (48). The inner wall of the first airway (6) is rotatably connected to the transmission shaft (41), one end of the transmission shaft (41) is symmetrically fixedly connected to the worm (42), the bottom end of the frame (4) is fixedly connected to the worm wheel (43), the worm (42) and the worm wheel (43) are meshed, one end of the transmission shaft (41) is provided with a square groove (44), the inner wall of the square groove (44) is fixedly connected to the first airway (6). The second spring (45) and the inner wall of the square groove (44) are slidably connected to a transmission rod (46), one end of the transmission rod (46) is fixedly connected to one end of the second spring (45), and a conical friction groove (47) is provided at one end of the transmission rod (46) away from the second spring (45). A drive shaft (48) is equidistantly installed at the bottom end of the inner wall of the furnace (2), and one end of the drive shaft (48) is designed to be conical frosted; one end of the drive shaft (48) with a conical frosted surface matches the conical friction groove (47); a motor is fixedly connected to the outer wall of the furnace (2), and the output end of the motor is fixed to the other end of the drive shaft (48); The clamping assembly comprises a first driving disc (31), a second driving disc (32), a bevel gear ring (33), an extension rod (34), a first bevel gear (35), a special-shaped slide groove (36), a first push rod (37), a second push rod (38), a shifting column (39), a first groove (310), a first spring (311) and a T-shaped push block (312); the first driving disc (31) and the second driving disc (32) are symmetrically connected to each other in the interior of the connecting frame (5); the ends of the first driving disc (31) and the second driving disc (32) close to each other are fixedly connected to the bevel gear ring (33); the extension rod (34) is fixedly connected to the interior of the second air passage (7); one end of the extension rod (34) is fixedly connected to the first bevel gear (35); the axis of the first bevel gear (35) coincides with the axis of the connection between the frame (4) and the connecting frame (5); the first bevel gear (35) is meshed with the two bevel gear rings (33) respectively. , the first driving disk (31) and the second driving disk (32) are both provided with a special-shaped sliding groove (36) at one end away from each other, and the first push rod (37) and the second push rod (38) are equidistantly slidably connected inside the connecting frame (5), and one end of the first push rod (37) and the second push rod (38) are both fixedly connected with a shifting column (39), and the first push rod (37) is slidably connected to the special-shaped sliding groove (36) on the first driving disk (31) through the corresponding shifting column (39), and the second push rod (38) is slidably connected to the special-shaped sliding groove (36) on the second driving disk (32) through the corresponding shifting column (39); one end of the first push rod (37) and the second push rod (38) are both provided with a first groove (310), the inner wall of the first groove (310) is fixedly connected with a first spring (311), the inner wall of the first groove (310) is slidably connected with a T-shaped push block (312), and one end of the first spring (311) is fixedly connected to one end of the T-shaped push block (312); The connecting assembly comprises a first connecting column (51), a first connecting wheel (52), a second connecting column (53), a second connecting wheel (54), a second bevel gear (55) and a third bevel gear (56); the first connecting column (51) is rotatably connected to the axis of the top end of the frame (4); the top end of the first connecting column (51) is fixedly connected to the top end of the bracket (3); the bottom end of the first connecting column (51) is fixedly connected to the first connecting wheel (52); the second connecting column (53) is rotatably connected inside the second airway (7); the top end of the second connecting column (53) is fixedly connected to the second connecting wheel (54); the first connecting wheel (52) and the second connecting wheel (54) are connected by a wire rope transmission; one end of the second connecting column (53) is fixedly connected to two second bevel gears (55); the third bevel gear (56) is fixedly connected to the connection between the connecting frame (5) and the frame (4); the second bevel gear (55) and the third bevel gear (56) are meshedly connected.

2. A heat treatment device for producing binary PtRh3 catalytic mesh according to claim 1, characterized in that: The special-shaped chute (36) is composed of a plurality of V-shaped grooves connected end to end, and the angle between the two ends of one of the V-shaped grooves and the center of the connecting frame (5) is 20 degrees, and the axial angle between the two groups of special-shaped chute (36) is 10 degrees.

3. A heat treatment device for producing binary PtRh3 catalytic mesh according to claim 1, characterized in that: Connecting slide grooves (9) are symmetrically provided at both ends of the bracket (3), and connecting slide bars (10) are symmetrically fixedly connected to the inner wall of the furnace (2), and the connecting slide bars (10) are slidably connected to the connecting slide grooves (9).

4. A heat treatment device for producing binary PtRh3 catalytic mesh according to claim 3, characterized in that: A latch (11) is slidably connected to one corner of the bracket (3), and a slot (12) is provided on the inner wall of the bottom end of the furnace (2), and the latch (11) is plugged into the slot (12).

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