Double-head activation furnace

Abstract

The utility model relates to a double-headed activation furnace, which comprises an intermittent operating furnace body and feeding bins symmetrically arranged on the left side and the right side of the furnace body, a feeding device is arranged below the discharging position of each feeding bin, the rear half section of each feeding device is arranged in the furnace body, materials are fed into the discharging end of the tail from the head of each feeding device, and the materials are discharged in the furnace body. A guide vane plate is further fixedly installed in the furnace body, discharging ports are formed in the left end and the right end of the furnace body, the discharging ports are externally connected with coil pipes used for discharging, and a gas guide pipe for introducing water vapor is guided in the furnace body. According to the utility model, a double-head feeding mode and a single-head feeding mode can be used, the speed is higher when double-head feeding is used, after feeding is completed, materials are concentrated in the center of the furnace body through forward rotation of the furnace body, and the materials are continuously turned over and activated in the furnace body under the feeding of water vapor, so that the activation efficiency is improved. When the furnace body rotates reversely, reverse discharging can be achieved through the guide vane plate, the use energy consumption is low, and the activation efficiency is good.

Description

Technical Field

[0001] The utility model relates to the technical field of E activation furnace equipment, and particularly to a double-headed activation furnace. Background Art

[0002] The application of continuous furnaces in the activation process is usually to improve production efficiency and product quality. In an activation furnace, a continuous furnace can provide stable temperature and atmosphere conditions, which are crucial for the activation process. However, during use, it is found that there are the following problems in the activation of continuous furnaces: In terms of activation time control: Due to the length of the furnace body, the effective heating section, and the rotation speed, the activation duration is limited; In terms of efficiency: Since it is necessary to balance the control of the activation time and the rotation speed of the furnace body, when the rotation speed of the material in the furnace is fast, the activation time is short, and when the rotation speed is slow, the material turning effect is poor, and thus the activation efficiency is not good; In terms of energy consumption: Due to the factors of furnace body rotation and material movement, the heating section is longer than that of intermittent furnaces, and the energy consumption is higher; In terms of controlling the feeding and discharging speed: Continuous furnaces generally have single-head feeding, and the feeding speed is slow.

[0003] Therefore, in view of the above problems in the use of continuous furnaces, the present utility model proposes a double-headed activation furnace to solve them. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the above problems in the prior art and to make up for the deficiencies of the prior art, the present utility model provides a double-headed activation furnace that can be reasonably manufactured and used.

[0006] (2) Technical Solutions

[0007] To solve the above technical problems, the present utility model provides such a double-headed activation furnace, which includes a furnace body operating intermittently and feeding bins symmetrically arranged on the left and right sides of the furnace body. Below the discharging part of the feeding bin, a feeding device is provided. The latter half of the feeding device is arranged inside the furnace body. Materials are fed from the head of the feeding device to the discharging end at the tail and are discharged inside the furnace body. A guide vane is fixedly installed inside the furnace body, and the guide vane does not rotate synchronously with the furnace body. The furnace body has two furnace heads, and the two furnace heads are respectively arranged corresponding to the two feeding devices;

[0008] At least one gas outlet pipe arranged from outside to inside is connected to the furnace head, and a control valve is provided on the gas outlet pipe. Discharging ports are provided at both the left and right ends of the furnace body, and coiled pipes for discharging are connected to the outside of the discharging ports. The installation method of the coiled pipes outside the furnace body is an installation method that surrounds the circumference of the outer furnace body;

[0009] Inside the furnace body, there is a gas guide pipe for introducing steam. The gas guide pipe is connected to an external steam pipe, and a universal shaft is provided in the direction of the source of the steam pipe for matching.

[0010] Preferably, the coil pipes are arranged in a multi - loop circular and parallel manner around the outside of the furnace body, which is convenient for better cooling of the material after activation through multiple loops of coil pipes.

[0011] Preferably, the gas guide pipe includes a first gas guide pipe and a second gas guide pipe arranged in parallel. The first gas guide pipe and the second gas guide pipe are connected to each other through a connecting pipe arranged around the furnace body. The connecting pipe is connected to the steam pipe, which is convenient for realizing the feeding of steam through multiple paths.

[0012] Preferably, the guide vane plate is arranged transversely in a fork shape inside the furnace body. The head of the guide vane plate is fixedly installed outside the discharge end. Being set in a fork shape can effectively contact the internal material, and setting its head outside the discharge end can make it stationary when the furnace body rotates, thus forming a relative movement effect with the moving material and also achieving the effect of mixing the material.

[0013] Preferably, an electric control valve is provided on the steam pipe, which is convenient for better controlling the inlet and outlet of steam. The steam pipe is sleeved on a limit ring to achieve effective limitation and prevent it from swaying randomly when the furnace body rotates. The limit ring is installed on the installation frame outside the furnace body, which is beneficial to limit both the steam pipe and the gas guide pipe inside the installation frame. The installation frame is fixedly connected to the furnace body and contacts the outer roller to assist the rotation of the furnace body. Setting the components inside the installation frame can reduce the influence on the parts outside the furnace body when the outer roller (i.e., the lower roller) drives the furnace body to rotate.

[0014] Preferably, the coil pipes are arranged outside the installation frame. Due to the position driven by the corresponding roller of the installation frame, even if the coil pipes are arranged outside, they will not be affected during rotation, and it can also avoid overcrowding of the structure inside the installation frame.

[0015] Preferably, the feeding device includes a feeding conveying pipe arranged transversely and parallel to the furnace body, and the front end of the feeding conveying pipe is provided with a feeding port matching the discharge position of the feeding bin, so as to facilitate timely feeding and discharging. The outer end of the feeding conveying pipe (21) is provided with a driving motor, and the driving motor is connected to the auger shaft inside the tube body of the feeding conveying pipe. Feeding augers are evenly distributed on the auger shaft. The feeding conveying pipe extends to the inner side of the furnace body, wherein the feeding conveying pipe is connected to the furnace head through a ball bearing sleeve, which can avoid the situation where the feeding conveying pipe rotates when the furnace body rotates. The length of the feeding auger extends to the discharge end, and can also be appropriately extended out of the feeding conveying pipe to ensure that the material can be effectively fed into the furnace body. The guide vane is fixedly provided at the end of the feeding conveying pipe, and the setting specification is set along the outside of the feeding conveying pipe to avoid sealing the discharge end.

[0016] Preferably, the air guide tube is arranged to fit the inner wall of the furnace body, which can effectively avoid affecting the activation of the internal material when the furnace body rotates.

[0017] Preferably, the guide vane plates at both ends arranged on the inner side of the furnace body extend to the middle of the furnace body and are staggered and butt-jointed.

[0018] (3) Beneficial effects

[0019] Compared with the existing continuous furnace activation material, the utility model has the following advantages:

[0020] 1. Control of activation time: The activation furnace in this scheme is intermittent, which can be fed in large quantities at one time, and the activation time can be guaranteed to be long enough; while the continuous furnace has a limited activation time due to the length of the furnace body, the effective heating section and the rotation speed;

[0021] 2. Control of activation efficiency: The activation furnace in this solution is intermittent, and the material turning effect in the furnace can be adjusted by adjusting the speed to ensure sufficient contact between the material and the water vapor. However, in a continuous furnace, the furnace speed will be adjusted to the minimum due to the need to control the activation time, resulting in poor material turning effect in the furnace and thus poor activation efficiency.

[0022] 3. Energy consumption comparison: The activation furnace in this solution is intermittent, which can control the effective heating section to a certain length, reduce energy consumption and reduce heat dissipation. However, due to the factors of furnace body rotation and material movement, the heating section of the continuous furnace is longer than that of the intermittent type, and the energy consumption is higher.

[0023] 4. Control of activation factors: The activation furnace in this scheme is intermittent, which can independently control the changes in activation requirements. However, continuous furnaces require comprehensive consideration of the correlation between different activation factors, which is more complicated.

[0024] 5. Design of spiral guide vanes: The activation furnace in this solution is intermittent. The angle design of the intermittent spiral guide vanes can be large or small without limitation, as long as it is convenient for feeding and discharging. For a continuous furnace, the issues of rotation speed and material movement need to be considered. If the guide vane angle is large, the material movement speed is relatively fast, and the activation time is shortened. If the guide vane angle is small, the material movement speed is relatively slow. Although the activation time can be controlled, when cleaning the furnace body, it is not thorough enough and is likely to be mixed into the next batch of activated materials.

[0025] 6. Fast feeding and discharging speed: The activation furnace in this solution is provided with two heads. The feeding and discharging speeds are faster than those of the single-head feeding of the continuous type, and the discharging is also fast.

[0026] Generally speaking, this solution is set as a two-head feeding bin, which can use either the two-head feeding method or the single-head feeding method, so that the feeding method is optional. When using two-head feeding, the speed is faster. After the feeding is completed, through the forward rotation of the furnace body, the materials are concentrated in the center of the furnace body. Under the feeding of water vapor, the materials continuously turn and activate in the furnace body. The two end guide plates extend to the middle and are staggeredly butted, so that reverse discharging can be achieved through the guide plates when the furnace body rotates in reverse. It has low energy consumption and good activation efficiency. Brief Description of the Drawings

[0027] Figure 1 It is a structural sectional view of the present utility model.

[0028] Figure 2 It is a left view of the present utility model.

[0029] Reference numerals are:

[0030] 1 Feeding bin, 2 Feeding device, 21 Feeding conveying pipe, 211 Feeding port, 22 Driving motor, 23 Screw shaft, 24 Feeding screw, 25 Discharging end, 26 Guide plate, 3 Furnace body, 31 Furnace head, 32 Discharging port, 33 Air outlet pipe, 34 Coiled pipe, 4 Water vapor pipe, 41 Electric control valve, 42 Limit ring, 43 First air guide pipe, 44 Connecting pipe, 45 Second air guide pipe; 5 Installation frame. Specific Embodiments

[0031] The present utility model will be further described in conjunction with the drawings and embodiments.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0033] As Figure 1-2 shown, an embodiment of a double-headed activation furnace according to the present utility model includes a furnace body 3 operating intermittently and feeding bins 1 symmetrically arranged on the left and right sides of the furnace body 3. A feeding device 2 is provided below the discharging outlet of the feeding bin 1. The latter half of the feeding device 2 is arranged inside the furnace body 3. Materials are fed from the head of the feeding device 2 to the discharging end 25 at the tail and are discharged inside the furnace body 3. A guide vane plate 26 is fixedly installed inside the furnace body 3. The guide vane plate 26 does not rotate synchronously with the furnace body 3. The guide vane plate 26 is transversely arranged in a fork shape inside the furnace body 3. The head of the guide vane plate 26 is fixedly installed outside the discharging end 25. The furnace body 3 is provided with two furnace heads 31, and the two furnace heads 31 are respectively arranged corresponding to the two feeding devices 2;

[0034] At least one gas outlet pipe 33 arranged from outside to inside is connected to the furnace head 31. A control valve is provided on the gas outlet pipe 33. Discharging ports 32 are provided at both the left and right ends of the furnace body 3. A coil pipe 34 for discharging materials is connected outside the discharging ports 32. The installation method of the coil pipe 34 outside the furnace body 3 is an installation method surrounding the circumference of the outer furnace body 3. Specifically, the coil pipe 34 is arranged in a multi-turn circular and parallel manner around the outside of the furnace body 3;

[0035] A gas guide pipe for introducing water vapor is guided inside the furnace body 3. The gas guide pipe is connected to an external water vapor pipe 4. The gas guide pipe is arranged inwards and is attached to the inner wall of the furnace body 3. A universal shaft is provided in the direction of the source of the water vapor pipe 4 for matching. Specifically, see Figure 1 , the gas guide pipe includes a first gas guide pipe 43 and a second gas guide pipe 45 arranged in parallel with each other. The first gas guide pipe 43 and the second gas guide pipe 45 are connected to each other through a connecting pipe 44 arranged outside the furnace body 3. The connecting pipe 44 is connected to the water vapor pipe 4. For convenient control, an electric control valve 41 is provided on the water vapor pipe 4. The water vapor pipe 4 is sleeved on a limiting ring 42. The limiting ring 42 is installed on a mounting frame 5 outside the furnace body 3. The mounting frame 5 is fixedly connected to the furnace body 3 and contacts with the outer rollers to assist the furnace body 3 in rotating. It should be noted that the area of the mounting frame is the maximum range for installing the bottom rollers, so as to avoid touching other components during rotation. However, since the coil pipe 34 is arranged outside the mounting frame 5 and is arranged at the positions of the two furnace heads, it will not be affected by the rollers either;

[0036] See Figure 1, the feeding device 2 includes a feeding conveying pipe 21 arranged horizontally and parallel to the furnace body 3. A feeding port 211 matching the position of the discharging part of the feeding bin 1 is provided at the front end of the feeding conveying pipe 21. A driving motor 22 is provided at the outer end of the feeding conveying pipe 21. The driving motor 22 is connected to a screw shaft 23 inside the pipe body of the feeding conveying pipe 21. Feeding screws 24 are equidistantly distributed on the screw shaft 23. The feeding conveying pipe 21 extends to the inner side of the furnace body 3 and is sleeved on the furnace head 31 through a ball bearing. The length of the feeding screw 24 extends to the discharging end 25, and can also extend out of the feeding conveying pipe appropriately to ensure that the material can be effectively fed into the furnace body. The guide vane plate 26 is fixedly arranged at the end of the feeding conveying pipe, and the set specification is arranged along the outside of the feeding conveying pipe to avoid blocking the discharging end.

[0037] When the utility model is in use, it can be selected to discharge materials through the feeding bin on one side or the feeding bins on both sides simultaneously according to the use efficiency. The materials in the feeding bin extend into the furnace body on the other side through the feeding conveying pipe in the feeding device. Specifically, the driving motor on one side of the feeding conveying pipe drives the screw shaft in the feeding conveying pipe to rotate, and the screw shaft drives the feeding screw to convey the materials inward and discharge them at the discharging end at the end of the feeding conveying pipe. Since the discharging end is arranged inside the furnace body, the materials can be fed into the furnace body. It should be noted that in the process of using this solution, only the furnace body rotates, and the feeding conveying pipe does not rotate. Therefore, a ball bearing is arranged between the feeding conveying pipe and the furnace head, and the feeding conveying pipe is sleeved on the ball bearing;

[0038] A forked guide vane plate is arranged on the periphery of the feed conveying pipe. Specifically, there are two groups of positive and negative spiral guide vane plates in the furnace body. The guide vane plates at both ends extend to the middle and are staggeredly butted. When the furnace body rotates forward, the materials continue to be continuously turned and activated in the furnace. After the activation is completed, the furnace body rotates reversely, and the materials are discharged reversely through the guide vane plates. It should be noted that the forward and reverse rotations of the furnace body are realized by controlling the external rollers, that is, the rollers (not shown in the figure) under the mounting frame. And this solution is mainly aimed at the modification of the furnace body, so there is no excessive description and illustration of the structure driving its rotation. This part can be understood in combination with the structure of the forward and reverse rotation of the furnace body drive in the prior art. When the furnace body rotates horizontally forward, the materials will rotate with the furnace body after entering the furnace. With the continuous rotation of the furnace body, the materials will form a pile in the middle of the furnace body under the action of centrifugal force because this is the place where the centrifugal force is the largest. This piling phenomenon helps the mixing and heat exchange of the materials because the materials will continuously tumble and redistribute when passing through the furnace body. Therefore, the materials can be activated by the water vapor transported externally inside the furnace body. When the furnace body rotates reversely, the materials will redistribute their directions and move away from the middle of the furnace body, move towards the direction of the discharge port in the figure, and are discharged reversely through the guide vane plates, so that the materials are sent to the discharge port and then transported outward through the coil pipe connected to the discharge port. During the outward transportation process, the contact area between the materials and the air can be increased, so that while the furnace body rotates to output the materials, the materials can be cooled. As long as the coil pipe is long enough, the materials sent out after activation can be fully cooled. During the use of this device, bilateral feeding and bilateral discharging can be realized, with good use effect, high activation efficiency, low energy consumption. And because the furnace body used in this solution is an intermittent furnace body, a large batch of materials can be fed at one time, and the activation time can be guaranteed to be long enough. The turning effect of the materials in the furnace can be adjusted by adjusting the rotation speed, ensuring the full contact between the materials and the water vapor, reducing energy consumption and heat dissipation, having practicability, and being suitable for market promotion and use.

[0039] The above-described embodiments only represent the preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, the present invention is not limited to these embodiments. It should be noted that for those of ordinary skill in the art, any improvement made without departing from the gist of the present invention falls within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A double-head activation furnace, characterized in that: The invention comprises an intermittently operated furnace body (3) and a feed bin (1) symmetrically arranged on the left and right sides of the furnace body (3); a feed device (2) is provided below the discharge point of the feed bin (1); the rear half of the feed device (2) is arranged inside the furnace body (3); the material is fed from the head of the feed device (2) to the discharge end (25) at the tail end and discharged inside the furnace body (3); a guide vane (26) is fixedly installed inside the furnace body (3); the guide vane (26) does not rotate synchronously with the furnace body (3); the furnace body (3) is provided with two burners (31), and the two burners (31) correspond to the two feeding devices (2) respectively; The furnace head (31) is connected to at least one gas outlet pipe (33) arranged from the outside to the inside, and a control valve is provided on the gas outlet pipe (33). The left and right ends of the furnace body (3) are both provided with discharge ports (32). The discharge ports (32) are externally connected to a coil (34) for discharging the material. The coil (34) is installed on the outside of the furnace body (3) in a manner that surrounds the circumference of the outer furnace body (3). An air guide pipe for introducing water vapor is provided inside the furnace body (3), and the air guide pipe is connected to an external water vapor pipe (4). The water vapor pipe (4) is provided with a universal shaft toward the source for matching.

2. A double-headed activation furnace according to claim 1, characterized in that: The coil (34) is arranged in a multi-circular and parallel manner around the outside of the furnace body (3).

3. A double-headed activation furnace according to claim 1, characterized in that: The air guide pipe comprises a first air guide pipe (43) and a second air guide pipe (45) arranged in parallel with each other, the first air guide pipe (43) and the second air guide pipe (45) are connected to each other via a connecting pipe (44) arranged on the periphery of the furnace body (3), and the connecting pipe (44) is connected to the water vapor pipe (4).

4. A double-headed activation furnace according to claim 1, characterized in that: The guide vane (26) is fork-shaped and is laterally arranged inside the furnace body (3), and the head of the guide vane (26) is fixedly installed on the outside of the discharge end (25).

5. A double-headed activation furnace according to any one of claims 1 to 4, characterized in that: The water steam pipe (4) is provided with an electric control valve (41), the water steam pipe (4) is sleeved on a limiting ring (42), and the limiting ring (42) is installed on a mounting frame (5) outside the furnace body (3); The mounting frame (5) is fixedly connected to the furnace body (3) and contacts the outer roller to assist the furnace body (3) in rotating.

6. A double-headed activation furnace according to claim 5, characterized in that: The coil (34) is arranged outside the installation frame (5).

7. A double-headed activation furnace according to claim 6, characterized in that: The feeding device (2) comprises a feeding conveying pipe (21) arranged transversely and parallel to the furnace body (3); a front end of the feeding conveying pipe (21) is provided with a feeding port (211) matching the position of the discharge of the feeding bin (1); The outer end of the feed conveying pipe (21) is provided with a driving motor (22), the driving motor (22) is connected to an auger shaft (23) inside the pipe body of the feed conveying pipe (21), and feeding augers (24) are evenly distributed on the auger shaft (23). The feed conveying pipe (21) extends to the inner side of the furnace body (3) and is sleeved on the furnace head (31) through a ball bearing. The length of the feeding auger (24) extends to the discharge end (25), and the guide vane (26) is fixedly arranged at the end of the feeding conveying pipe (21).

8. The double-headed activation furnace according to claim 7, characterized in that: The air guide pipe is arranged to be attached to the inner wall of the furnace body (3).

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