Stirring device for production of PTC (Positive Temperature Coefficient) thermal sensitive ceramic heating sheet

Abstract

The utility model provides a stirring device for producing a PTC (Positive Temperature Coefficient) thermal sensitive ceramic heating sheet and belongs to the technical field of machinery. The problem that in the prior art, applicability is poor is solved. The stirring device for PTC thermal sensitive ceramic heating sheet production comprises a stirring box, a driving assembly, a material mixing plate and a stirring assembly, a cavity is formed in the stirring box, one side of the upper end of the stirring box is connected with a feeding pipe, the feeding pipe is communicated with the inner cavity of the stirring box, the driving assembly is connected to the stirring box, and the stirring assembly is connected to the stirring box. The mixing plate is connected with the driving assembly, the driving assembly is used for changing the vertical position of the mixing plate, the mixing plate is located in an inner cavity of the stirring box and used for mixing raw materials, the stirring assembly is connected to the side wall of the inner cavity of the stirring box, the lower end of the stirring box is fixedly connected with a discharging pipe, and the discharging pipe is fixedly connected with the stirring box. The discharging pipe is in through connection with the inner cavity of the stirring box, and a vacuum layer is arranged on the side wall of the stirring box. The stirring device for producing the PTC thermal sensitive ceramic heating sheet is high in applicability.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical technology and relates to a stirring device for producing PTC thermistor ceramic heating sheets. Background Art

[0002] PTC thermistor ceramics are a new type of semiconductor thermistor ceramics. Its formula is mainly barium titanate, with a small amount of donor doping elements added. After mixed sintering, it becomes a semiconductor ceramic with a certain conductivity. A small amount of auxiliary elements to enhance performance are added. Through a secondary reasonable sintering reaction, PTC thermistor ceramics are finally generated. PTC thermistor ceramics have very unique resistance, temperature thermistor characteristics and automatic temperature control and heating functions, which makes it have a wide range of applications. The advantages are simple shape, easy processing, convenient use, and fast assembly. It can be used as heating elements such as electric slippers, electric heating plates, electric stoves, electric irons, electric heating plates, electric mosquito repellents, electric thermostats, screen heaters, etc. Its heating method is mainly through the heat conduction heating of the surface of the heating plate. The amount of heat generated is related to the area, thickness, and thermal resistance of the heating plate.

[0003] The production process of PTC thermistor ceramic heating sheet includes batching, ball milling, high-speed stirring, spray granulation, pressing, sintering, grinding, chamfering, cleaning, electrode application, voltage resistance testing, resistance sorting and packaging. The purpose of the stirring process is to fully mix the raw materials. The uniformity of the raw material mixing achieved by the stirring operation will greatly affect the quality of the heating sheet. The existing stirring uses ordinary stirring equipment, the stirring method is relatively single, the stirring time is long, and the applicability is poor. Summary of the invention

[0004] The purpose of the utility model is to provide a stirring device for producing PTC thermistor ceramic heating sheets with strong applicability in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A stirring device for producing PTC thermistor ceramic heating sheets, characterized in that it comprises a stirring box, a driving component, a mixing plate and a stirring component, the stirring box having an internal cavity, a feeding pipe connected to one side of the upper end of the stirring box and the feeding pipe and the inner cavity of the stirring box are communicated, the driving component is connected to the stirring box, the mixing plate and the driving component are connected, the driving component is used to change the upper and lower positions of the mixing plate, the mixing plate is located in the inner cavity of the stirring box and the mixing plate is used to mix the raw materials, the stirring component is connected to the side wall of the inner cavity of the stirring box, the lower end of the stirring box is fixedly connected to a discharge pipe, the discharge pipe and the inner cavity of the stirring box are communicated, and the side wall of the stirring box is provided with a vacuum layer.

[0007] The utility model creatively arranges a mixing box, a driving component and a stirring component. The raw materials are poured into the mixing box from a feeding pipe, and then the stirring component is started to stir the raw materials. Starting the driving component can drive the mixing plate to move up and down. By arranging a vacuum layer, it is possible to reduce heat transfer and heat convection through the vacuum layer during the stirring process, thereby reducing heat loss of the raw materials, thereby achieving insulation of the raw materials. After the raw materials have been stirred, the discharge pipe is opened to recycle them.

[0008] Since the raw materials will rotate along a certain direction with the stirring component during the mixing process, combined with the stirring of the mixing plate moving up and down, the stirring inside the mixing box is more comprehensive and the stirring effect is better, thereby making the flow mixing effect between the raw materials better, the efficiency higher, and the applicability stronger.

[0009] In the above-mentioned stirring device for producing PTC thermistor ceramic heating sheets, the mixing plate is provided with a plurality of penetrating circular holes.

[0010] When the mixing plate moves up and down, the raw materials can be turned up and down and pass through the round holes, thereby improving the mixing effect of the raw materials.

[0011] In the above-mentioned stirring device for producing PTC thermistor ceramic heating sheets, the driving assembly includes a motor, a screw and a guide rod. The motor is fixedly mounted on the stirring box, one end of the screw is connected to the output end of the motor, and the other end of the screw is rotatably connected to the bottom wall of the inner cavity of the stirring box. The two ends of the guide rod are respectively fixedly connected to the upper and lower walls of the inner cavity of the stirring box, one end of the mixing plate is threadedly connected to the screw, and the other end of the mixing plate is serially connected to the guide rod.

[0012] The motor drives the screw to rotate, and the setting of the guide rod enables the mixing plate to move up and down stably in the inner cavity of the mixing box.

[0013] In the above-mentioned stirring device for producing PTC thermistor ceramic heating sheets, the stirring assembly includes a stirring motor and a stirring rod, the stirring motor is fixedly connected to the outer side of the stirring box, the output end of the stirring motor is connected to the stirring rod, and the stirring rod is located in the inner cavity of the stirring box; the upper and lower sides of the stirring rod are fixedly connected with a stirring frame, and the stirring frame has a plurality of penetrating notches.

[0014] The stirring motor drives the stirring frame to rotate, and when the stirring frame rotates, the raw materials pass through the notches and move and are mixed along the rotating direction of the stirring frame.

[0015] In the above-mentioned stirring device for producing PTC thermistor ceramic heating sheets, the number of the stirring components is two, and the two stirring components are symmetrically arranged on both sides of the stirring box.

[0016] The driving assembly and the mixing plate are located between the two stirring assemblies. The arrangement of the two stirring assemblies enhances the stirring and mixing efficiency.

[0017] In the above-mentioned stirring device for producing PTC thermistor ceramic heating sheet, a base is fixedly connected to the bottom of the stirring box.

[0018] The setting of the base improves the stability of the mixing box.

[0019] In the above-mentioned stirring device for producing a PTC thermistor ceramic heating sheet, the number of the discharge pipe and the feed pipe are both two, and the discharge pipe is connected to a valve.

[0020] The discharge pipe is opened and closed by a valve. The two feed pipes facilitate the feeding of the mixing box.

[0021] Compared with the prior art, the stirring device for producing PTC thermistor ceramic heating sheets creatively arranges a stirring box, a driving component and a stirring component. The raw materials are poured into the stirring box from the feed pipe, and then the stirring component is started to stir the raw materials. Starting the driving component can drive the mixing plate to move up and down. By setting a vacuum layer, heat transfer and heat convection can be reduced through the vacuum layer during the stirring process, thereby reducing the heat loss of the raw materials and keeping the raw materials warm. After the raw materials are stirred, the discharge pipe is opened to recycle them.

[0022] Since the raw materials will rotate along a certain direction with the stirring component during the mixing process, combined with the stirring of the mixing plate moving up and down, the stirring inside the mixing box is more comprehensive and the stirring effect is better, thereby making the flow mixing effect between the raw materials better, the efficiency higher, and the applicability stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The invention is a schematic diagram of the cross-sectional structure of a stirring device for producing a PTC thermistor ceramic heating sheet.

[0024] In the figure, 1. mixing box; 11. feed pipe; 12. discharge pipe; 13. valve; 14. vacuum layer; 15. base; 2. drive assembly; 21. motor; 22. screw; 23. guide rod; 3. mixing plate; 31. round hole; 4. stirring assembly; 41. stirring motor; 42. stirring rod; 43. stirring frame; 44. notch. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0028] like Figure 1 As shown, the stirring device for producing PTC thermistor ceramic heating sheet comprises a stirring box 1, a driving component 2, a mixing plate 3 and a stirring component 4. The stirring box 1 has an internal cavity, a feeding pipe 11 is connected to one side of the upper end of the stirring box 1, and the feeding pipe 11 and the inner cavity of the stirring box 1 are connected, the driving component 2 is connected to the stirring box 1, the mixing plate 3 and the driving component 2 are connected, the driving component 2 is used to change the upper and lower positions of the mixing plate 3, the mixing plate 3 is located in the inner cavity of the stirring box 1, and the mixing plate 3 is used to mix the raw materials, the stirring component 4 is connected to the side wall of the inner cavity of the stirring box 1, the lower end of the stirring box 1 is fixedly connected to a discharge pipe 12, the discharge pipe 12 and the inner cavity of the stirring box 1 are connected, and the side wall of the stirring box 1 is provided with a vacuum layer 14.

[0029] The mixing plate 3 has a plurality of penetrating circular holes 31 .

[0030] The driving assembly 2 includes a motor 21, a screw 22 and a guide rod 23. The motor 21 is fixedly mounted on the mixing box 1. One end of the screw 22 is connected to the output end of the motor 21, and the other end of the screw 22 is rotatably connected to the bottom wall of the inner cavity of the mixing box 1. Both ends of the guide rod 23 are respectively fixedly connected to the upper and lower walls of the inner cavity of the mixing box 1. One end of the mixing plate 3 is threadedly connected to the screw 22, and the other end of the mixing plate 3 is serially connected to the guide rod 23.

[0031] The stirring assembly 4 includes a stirring motor 41 and a stirring rod 42. The stirring motor 41 is fixedly connected to the outer side of the stirring box 1. The output end of the stirring motor 41 is connected to the stirring rod 42. The stirring rod 42 is located in the inner cavity of the stirring box 1. The upper and lower sides of the stirring rod 42 are fixedly connected with a stirring frame 43, and the stirring frame 43 has a plurality of penetrating notches 44.

[0032] There are two stirring components 4 , and the two stirring components 4 are symmetrically arranged on both sides of the stirring box 1 .

[0033] A base 15 is fixedly connected to the bottom of the mixing box 1 .

[0034] There are two discharge pipes 12 and two feed pipes 11 , and a valve 13 is connected to the discharge pipe 12 .

[0035] The utility model creatively arranges a mixing box, a driving component and a stirring component. The raw materials are poured into the mixing box from a feeding pipe, and then the stirring component is started to stir the raw materials. Starting the driving component can drive the mixing plate to move up and down. By arranging a vacuum layer, it is possible to reduce heat transfer and heat convection through the vacuum layer during the stirring process, thereby reducing heat loss of the raw materials, thereby achieving insulation of the raw materials. After the raw materials have been stirred, the discharge pipe is opened to recycle them.

[0036] Since the raw materials will rotate along a certain direction with the stirring component during the mixing process, combined with the stirring of the mixing plate moving up and down, the stirring inside the mixing box is more comprehensive and the stirring effect is better, thereby making the flow mixing effect between the raw materials better, the efficiency higher, and the applicability stronger.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A stirring device for producing PTC thermistor ceramic heating sheet, characterized in that: The invention comprises a mixing box, a driving component, a mixing plate and a mixing component. The mixing box has an internal cavity. A feeding pipe is connected to one side of the upper end of the mixing box and the feeding pipe and the inner cavity of the mixing box are communicated with each other. The driving component is connected to the mixing box. The mixing plate and the driving component are connected. The driving component is used to change the upper and lower positions of the mixing plate. The mixing plate is located in the inner cavity of the mixing box and is used to mix the raw materials. The mixing component is connected to the side wall of the inner cavity of the mixing box. A discharge pipe is fixedly connected to the lower end of the mixing box. The discharge pipe and the inner cavity of the mixing box are communicated with each other. The side wall of the mixing box is provided with a vacuum layer.

2. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 1, characterized in that: The mixing plate is provided with a plurality of penetrating circular holes.

3. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 2, characterized in that: The driving assembly includes a motor, a screw and a guide rod. The motor is fixedly mounted on the mixing box. One end of the screw is connected to the output end of the motor, and the other end of the screw is rotatably connected to the bottom wall of the inner cavity of the mixing box. Both ends of the guide rod are respectively fixedly connected to the upper and lower walls of the inner cavity of the mixing box. One end of the mixing plate is threadedly connected to the screw, and the other end of the mixing plate is serially connected to the guide rod.

4. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 3, characterized in that: The stirring assembly includes a stirring motor and a stirring rod. The stirring motor is fixedly connected to the outer side of the stirring box. The output end of the stirring motor is connected to the stirring rod. The stirring rod is located in the inner cavity of the stirring box. The upper and lower sides of the stirring rod are fixedly connected to a stirring frame, and the stirring frame has a plurality of penetrating notches.

5. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 4, characterized in that: The number of the stirring components is two, and the two stirring components are symmetrically arranged on both sides of the stirring box.

6. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 5, characterized in that: The bottom of the mixing box is fixedly connected with a base.

7. A stirring device for producing a PTC thermistor ceramic heating sheet according to claim 6, characterized in that: The number of the discharge pipe and the number of the feed pipe are both two, and the discharge pipe is connected with a valve.

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