Multi-temperature-zone gradient compensation type electric furnace sintering device

Abstract

The utility model belongs to the technical field of electric furnace sintering devices, and particularly relates to a multi-temperature-zone gradient compensation type electric furnace sintering device which comprises an electric furnace sintering body, and a cooling mechanism is arranged on the outer side of the electric furnace sintering body. The cooling mechanism comprises a water tank, the water tank is arranged below the electric furnace sintering body, an air bellow is arranged on one side of the water tank, a double-shaft motor is arranged in the air bellow, the output end above the double-shaft motor is connected with fan blades, the output end below the double-shaft motor is connected with a first gear, and a crankshaft connected with the water tank is rotationally installed on one side of the first gear. A double-shaft motor is started, a piston is driven to reciprocate, cooling water is pushed to flow through a cooling pipe, an electric furnace sintering body is cooled, air circulation inside a shell is accelerated through blowing, and the heat dissipation effect is improved; air flow between the heat dissipation copper sheets is accelerated, the heat dissipation capacity of the water in the water tank is enhanced, the cooling time of the electric furnace sintering main body is greatly shortened, the production efficiency is improved, the water temperature of the water tank can be detected, water can be cooled, and the cooling effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric furnace sintering device technical field especially, relates to a kind of multi-temperature zone gradient compensation formula electric furnace sintering device. BACKGROUND

[0002] In the electric furnace sintering process of material preparation, multi-temperature zone setting and gradient compensation mechanism are very critical, multi-temperature zone setting is to divide the inside of electric furnace into multiple regions that can be independently temperature-controlled;Each region can be set to appropriate temperature according to the needs of different stages of material sintering;For example, in ceramic sintering, low-temperature zone removes moisture and organic matter in early stage, middle-temperature zone promotes preliminary densification in middle stage, and high-temperature zone achieves final densification in later stage, so that materials can be accurately heated in each stage by the cooperation of multi-temperature zone.

[0003] Gradient compensation mechanism is the key point of optimizing sintering;Because different parts of the material have differences in heat conduction, absorption and reaction process during sintering, the actual temperature gradient between temperature zones is often inconsistent with the theoretical expectation. When the actual gradient ΔT' of adjacent temperature zones deviates from the preset ΔT, the compensation mechanism will start. The system controls auxiliary heating or cooling devices according to the size and direction of the deviation, uses auxiliary heating fins to increase the temperature of low-temperature zone, or opens cooling fans to adjust the heat transfer rate, until ΔT'=ΔT, to ensure that the material is sintered under ideal gradient, and to ensure that the microstructure and performance are uniform and consistent.

[0004] However, the traditional multi-temperature zone gradient compensation formula electric furnace sintering device has obvious defects. After sintering is completed, it lacks a cooling mechanism, and is usually cooled by natural heat dissipation by standing still. During this period, the equipment is idle, which reduces production efficiency and affects productivity, and the practicability is poor. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art pointed out above, the present inventors have conducted in-depth research and, after a lot of creative labor, completed the present utility model.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A multi-temperature zone gradient compensation formula electric furnace sintering device, comprising an electric furnace sintering body, a controller is arranged on one side of the electric furnace sintering body, and a cooling mechanism is arranged on the outer side of the electric furnace sintering body.

[0008] The cooling mechanism comprises a water tank, the water tank is arranged below the electric furnace sintering body, a bellows is arranged on one side of the water tank, a double-shaft motor is arranged in the bellows, a fan blade is connected to the upper output end of the double-shaft motor, a gear one is connected to the lower output end of the double-shaft motor, a crankshaft connected with the water tank is rotatably installed on one side of the gear one, a gear two meshing with the gear one is sleeved on the outer side of the upper end of the crankshaft, a push rod is connected to the crankshaft through a connecting piece, and a stirring assembly connected with the push rod is arranged in the water tank.

[0009] As an improved technical scheme, the cooling mechanism further comprises a pump cylinder arranged on one side of the water tank, one end of the push rod is connected with a piston in the pump cylinder, one end of the pump cylinder is connected with a conduit provided with a one-way valve, one side of the pump cylinder is provided with a water inlet, and the water inlet is provided with a one-way valve, one end of the conduit away from the pump cylinder is connected with a cooling pipe, the cooling pipe is sleeved outside the electric furnace sintering body, the electric furnace sintering body is sleeved with an outer shell, the cooling pipe is located inside the outer shell, and one end of the cooling pipe is in communication with one end of the water tank close to the air bellow.

[0010] As an improved technical scheme, the air bellow is connected with a wind distribution ring in the outer shell through a connecting pipe, a plurality of air blowing holes are arranged on one side of the wind distribution ring, a wind gathering cover is arranged on the side of the outer shell away from the wind distribution ring, an air blowing pipe in communication with the wind gathering cover is arranged below the outer shell, a plurality of heat dissipation copper sheets penetrating through the side wall of the water tank are arranged on the side of the water tank away from the air bellow, and the heat dissipation copper sheets are fixedly connected with the water tank, the air blowing pipe is located above the heat dissipation copper sheets, and a plurality of spray holes are arranged on the part of the pipeline parallel to the water tank and located below the bottom of the water tank.

[0011] As an improved technical scheme, the diameter of the gear one is smaller than that of the gear two, the connecting piece is in T-shaped structure, and one end of the connecting piece is rotatably sleeved outside the concave part of the crankshaft.

[0012] As an improved technical scheme, the outer wall of the piston is sleeved with a sealing ring, a refrigerating device and a temperature sensor are arranged on one side of the water tank, and the refrigerating device and the temperature sensor are electrically connected with the controller.

[0013] As an improved technical scheme, the stirring assembly comprises a supporting rod, one end of the supporting rod is fixedly connected with the push rod and located on the side of the push rod away from the pump cylinder, and the supporting rod is located in the water tank, one end of the supporting rod away from the air bellow is rotatably connected with a rotating shaft, and the rotating shaft is symmetrically sleeved with an impeller outside.

[0014] As an improved technical scheme, gears three are symmetrically arranged at two ends of the rotating shaft, and the gears three are located on the opposite sides of the two impellers, drive grooves are symmetrically arranged in the inner wall of the water tank, and a plurality of tooth grooves meshing with the gears three are arranged in the inner bottom wall of the drive grooves.

[0015] After the above technical scheme is adopted, the beneficial effects of the present application are as follows:

[0016] 1. The electric furnace sintering body cooling device can continuously drive the piston to reciprocate and push the cooling water to flow through the cooling pipe by starting the double-shaft motor, so that the electric furnace sintering body is cooled, air blowing is improved, the heat dissipation effect is improved, the air flow between the heat dissipation copper sheets is accelerated, the heat dissipation effect of the heat dissipation copper sheets on the water in the water tank is improved, the cooling time of the electric furnace sintering body is shortened, and the production efficiency of the product is improved.

[0017] 2、The utility model discloses a water temperature monitoring in water tank can make water refrigeration cooling, improve its cooling effect.

[0018] 3、The utility model discloses a stirring assembly can be linked with push rod, and the impeller is driven to rotate and stir water continuously, accelerates its heat dissipation, makes its temperature distribution even. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. Wherein:

[0020] Figure 1 It is the overall structure schematic diagram of a kind of multi-temperature zone gradient compensation formula electric furnace sintering device of the utility model.

[0021] Figure 2 It is the front face partial section structure schematic diagram of the water tank of a kind of multi-temperature zone gradient compensation formula electric furnace sintering device of the utility model.

[0022] Figure 3 It is the partial section structure schematic diagram of the pump cylinder of a kind of multi-temperature zone gradient compensation formula electric furnace sintering device of the utility model.

[0023] Figure 4 It is the partial side section structure schematic diagram of the water tank of a kind of multi-temperature zone gradient compensation formula electric furnace sintering device of the utility model.

[0024] Mark explanation:

[0025] 1, electric furnace sintering main body;2, water tank;3, air bellow;4, double-shaft motor;5, fan blade;6, gear one;7, crankshaft;8, gear two;9, connecting piece;10, push rod;11, pump cylinder;12, piston;13, guide pipe;14, cooling pipe;15, air distribution ring;16, wind gathering cover;17, air blowing pipe;18, heat dissipation copper sheet;19, shell;20, refrigerator;21, support rod;22, rotating shaft;23, gear three;24, impeller;25, drive groove. DETAILED DESCRIPTION

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0029] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] like Figure 1 - Figure 4 As shown in the figure, this embodiment provides a multi-temperature zone gradient compensation electric furnace sintering device, including an electric furnace sintering body 1, a controller on one side of the electric furnace sintering body 1, and a cooling mechanism on the outside of the electric furnace sintering body 1; in this example, the electric furnace sintering body 1 is the prior art, which has multiple temperature zones and a gradient compensation mechanism, so it will not be described in detail; the cooling mechanism includes a water tank 2, which is located below the electric furnace sintering body 1, and a wind box 3 is provided on one side of the water tank 2. A dual-shaft motor 4 is provided in the wind box 3, and a fan blade 5 is connected to the upper output end of the dual-shaft motor 4. A gear 6 is connected to the lower output end of the dual-shaft motor 4. A crankshaft 7 connected to the water tank 2 is rotatably mounted on one side of the gear 6. A gear 8 that meshes with the gear 6 is sleeved on the outer side of the upper end of the crankshaft 7. A push rod 10 is hinged to the crankshaft 7 through a connector 9. A stirring assembly connected to the push rod 10 is provided in the water tank 2.

[0031] In the example, the cooling mechanism further comprises a pump cylinder 11, which is arranged on one side of the water tank 2. One end of the push rod 10 is connected with a piston 12 in the pump cylinder 11. One end of the pump cylinder 11 is connected with a conduit 13 provided with a one-way valve. A water inlet is formed on one side of the pump cylinder 11 and is provided with a one-way valve. One end of the conduit 13 away from the pump cylinder 11 is connected with a cooling pipe 14. The cooling pipe 14 is sleeved on the outside of the electric furnace sintering body 1. An outer shell 19 is sleeved on the outside of the electric furnace sintering body 1. The cooling pipe 14 is located inside the outer shell 19 and is in communication with one end of the water tank 2 close to the air bellow 3. The piston 12 is driven to reciprocate by the working transmission of the double-shaft motor 4, so that water is continuously pushed to flow through the cooling pipe 14, thereby cooling and lowering the temperature of the electric furnace sintering body 1, accelerating the cooling effect, improving the production efficiency of the product, and recycling the water.

[0032] In the example, the air bellow 3 is connected with a wind distribution ring 15 in the outer shell 19 through a connecting pipe. The wind distribution ring 15 is provided with a plurality of blowing holes on one side. The outer shell 19 is provided with a wind collecting cover 16 away from the wind distribution ring 15. The outer shell 19 is provided with a blowing pipe 17 in communication with the wind collecting cover 16. The water tank 2 is provided with a plurality of heat dissipation copper sheets 18 penetrating through the side wall of the water tank 2 away from the air bellow 3. The heat dissipation copper sheets 18 are fixedly connected with the water tank 2. The blowing pipe 17 is located above the heat dissipation copper sheets 18. The heat dissipation copper sheets 18 are provided with a plurality of spray holes parallel to the bottom of the part of the pipeline of the water tank 2, which can drive the fan blade 5 to rotate and blow, thereby blowing air in the outer shell 19, accelerating air flow, improving the heat dissipation effect, and making the blown air enter the blowing pipe 17 through the wind collecting cover 16 and then be sprayed out, thereby accelerating the air flow between the heat dissipation copper sheets 18 and improving the heat dissipation and cooling effect of the water in the water tank 2.

[0033] In the example, the diameter of the gear one 6 is smaller than the diameter of the gear two 8. The connecting piece 9 is in T-shaped structure and is rotatably sleeved on the outside of the concave part of the crankshaft 7 at one end, so that the rotating speed of the crankshaft 7 is smaller than that of the double-shaft motor 4, and the connecting piece 9 can continuously drive the push rod 10 to reciprocate.

[0034] In the example, the piston 12 is sleeved with a sealing ring. A refrigerating device 20 and a temperature sensor are arranged on one side of the water tank 2 and are electrically connected with the controller, so as to improve the sealing performance of the piston 12 and the pump cylinder 11. The refrigerating device 20 can refrigerate and cool the cooling water and keep it at low temperature, so as to keep good cooling effect.

[0035] As Figure 2 , Figure 3 and Figure 4As shown in the drawings, in the example, the stirring assembly comprises a support rod 21, and the lower end of the support rod 21 is fixedly connected to the top of the push rod 10 on the side away from the pump cylinder 11, and the support rod 21 is located in the water tank 2, and the end of the support rod 21 away from the air tank 3 is rotatably connected with a rotating shaft 22, and the outer side of the rotating shaft 22 is symmetrically sleeved with an impeller 24, so as to be linked with the push rod 10, and the impeller 24 is continuously driven to reciprocate, thereby stirring the water and accelerating heat dissipation.

[0036] In the example, gear three 23 is symmetrically sleeved at both ends of the rotating shaft 22, and the gear three 23 is located on the outer side of the two impellers 24, and the inner wall of the water tank 2 is symmetrically provided with a driving groove 25, and a plurality of tooth grooves which are engaged with the gear three 23 are formed in the inner bottom wall of the driving groove 25, so as to drive the gear three 23 to drive the rotating shaft 22 to rotate in opposite directions, and the impeller 24 is also rotated in opposite directions while moving left and right, thereby improving the stirring and heat dissipation effect of the water.

[0037] In use, the sample to be sintered is placed on the sample carrying platform in the device, the residence time and moving speed of the sample in each temperature zone are set according to the characteristics of the material and the requirements of the sintering process, the sample carrying platform moves in the furnace body according to the set program, sequentially passes through different temperature zones, and the whole sintering process is completed, in this process, the internal powder particles of the sample gradually undergo physical and chemical reactions such as diffusion and fusion under a suitable temperature gradient, densification is realized, and finally the required sintered material is obtained; when the electric furnace sintering body 1 needs to be cooled, the double-shaft motor 4 is started to work, the gear one 6 is driven to rotate, the gear two 8 meshing with the gear one 6 is driven to rotate, the crankshaft 7 is driven, the push rod 10 is driven by the connecting piece 9, the piston 12 is continuously pushed and pulled in the pump cylinder 11, the water in the pump cylinder 11 is continuously pushed into the cooling pipe 14, the electric furnace sintering body 1 is cooled, and the cooling water flowing through the cooling pipe 14 flows back to the water tank 2 for recycling. At the same time, the double-shaft motor 4 drives the fan blade 5 to rotate, the air is blown into the air distribution ring 15, and the air is blown into the outer shell 19 through the air blowing holes on the air distribution ring 15, so as to accelerate the air flow and improve the heat dissipation effect of the electric furnace sintering body 1. At the same time, the air blown out enters the air collecting cover 16 and then enters the air blowing pipe 17, and is blown out through the spray holes to accelerate the air flow around the heat dissipation copper sheet 18 and improve the heat dissipation efficiency and effect of the heat dissipation copper sheet 18 on the water in the water tank 2. At the same time, the movement of the push rod 10 drives the connecting rod 21 to move synchronously, the connecting rod 21 drives the rotating shaft 22 to move, the rotating shaft 22 drives the gear three 23 to move in the driving groove 25, and the gear three 23 drives the rotating shaft 22 to rotate through the gear groove, and then drives the impeller 24 to move left and right while rotating forward and backward, so as to continuously stir the water, accelerate the heat dissipation of the water, and make the temperature distribution of the water uniform. When the temperature sensor detects that the water temperature in the water tank 2 reaches the set value, the refrigerator 20 is started to work to cool the water, so as to reduce the temperature of the water and maintain good cooling effect. The water can be continuously cooled for use, and the practicability is higher.

[0038] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached to the present application.

Claims

1. A multi-temperature zone gradient-compensated electric furnace sintering device comprising an electric furnace sintering main body (1), characterized in that: The electric furnace sintering body (1) is provided with a controller on one side, and a cooling mechanism is arranged outside the electric furnace sintering body (1). The cooling mechanism comprises a water tank (2), the water tank (2) is arranged below the electric furnace sintering body (1), one side of the water tank (2) is provided with an air tank (3), the air tank (3) is internally provided with a double-shaft motor (4), an output end above the double-shaft motor (4) is connected with a fan blade (5), a lower output end of the double-shaft motor (4) is connected with a gear one (6), one side of the gear one (6) is rotatably installed with a crankshaft (7) connected with the water tank (2), an upper end outer side of the crankshaft (7) is sleeved with a gear two (8) engaged with the gear one (6), the crankshaft (7) is hingedly connected with a push rod (10) through a connecting piece (9), and the water tank (2) is internally provided with a stirring assembly connected with the push rod (10).

2. A multi-zone gradient-compensated electric furnace sintering device according to claim 1, characterized in that: The cooling mechanism further comprises a pump cylinder (11), and the pump cylinder (11) is arranged on one side in the water tank (2), one end of the push rod (10) is connected with a piston (12) in the pump cylinder (11), one end of the pump cylinder (11) is connected with a conduit (13) provided with a one-way valve, one side of the pump cylinder (11) is provided with a water inlet, and the water inlet is provided with a one-way valve, one end of the conduit (13) away from the pump cylinder (11) is connected with a cooling pipe (14), the cooling pipe (14) is sleeved outside the electric furnace sintering body (1), the electric furnace sintering body (1) is sleeved with an outer shell (19), the cooling pipe (14) is located inside the outer shell (19), and one end of the cooling pipe (14) is in communication with the water tank (2) close to one end of the air tank (3).

3. A multi-zone gradient-compensated electric furnace sintering apparatus according to claim 2, characterized in that: The air tank (3) is connected with a wind distribution ring (15) in the outer shell (19) through a connecting pipe, a plurality of air blowing holes are arranged on one side of the wind distribution ring (15), the outer shell (19) is provided with a wind collecting cover (16) away from one side of the wind distribution ring (15), the outer shell (19) is provided with a blowing pipe (17) in communication with the wind collecting cover (16) below, the water tank (2) is provided with a plurality of heat dissipation copper sheets (18) penetrating through the side wall of the water tank (2) away from the air tank (3), the heat dissipation copper sheets (18) are fixedly connected with the water tank (2), the blowing pipe (17) is located above the heat dissipation copper sheets (18), and the heat dissipation copper sheets (18) are provided with a plurality of spray holes on the bottom of the part of the pipeline parallel to the water tank (2).

4. A multi-zone gradient-compensated electric furnace sintering apparatus according to claim 3, characterized in that: The diameter of the gear one (6) is smaller than the diameter of the gear two (8), the connecting piece (9) is in T-shaped structure, and one end of the connecting piece (9) is rotatably sleeved outside the concave part of the crankshaft (7).

5. A multi-zone gradient-compensated electric furnace sintering apparatus according to claim 4, characterized in that: A sealing ring is sleeved on the outer wall of the piston (12), a refrigerating device (20) and a temperature sensor are arranged on one side in the water tank (2), and the refrigerating device (20) and the temperature sensor are electrically connected with the controller.

6. A multi-zone gradient-compensated electric furnace sintering apparatus according to claim 2, characterized by: The stirring assembly comprises a supporting rod (21), one end of the supporting rod (21) is fixedly connected with the push rod (10) on the top of the push rod (10) away from the pump cylinder (11), and the supporting rod (21) is located in the water tank (2), one end of the supporting rod (21) away from the air tank (3) is rotatably connected with a rotating shaft (22), and the rotating shaft (22) is symmetrically sleeved with an impeller (24) outside.

7. A multi-zone gradient-compensated electric furnace sintering apparatus according to claim 6, characterized in that: The rotating shaft (22) is sleeved with gear three (23) at symmetrical positions of two ends, gear three (23) is located at opposite outer sides of two impellers (24), the water tank (2) is symmetrically provided with driving grooves (25) in inner walls, and the inner bottom wall of the driving groove (25) is provided with a plurality of tooth grooves meshing with gear three (23).

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