Vibrating hammer device for outer furnace tube of rotary furnace

Abstract

The utility model discloses a rapping hammer device for an outer furnace tube of a rotary furnace, which belongs to the technical field of rotary furnace production and comprises a support frame and the outer furnace tube of the rotary furnace, a hammer handle seat is arranged on the support frame, a hammer handle shaft is connected onto the hammer handle seat, a vibrating hammer handle is fixedly connected onto the hammer handle shaft, a vibrating hammer shaft is rotatably connected onto the vibrating hammer handle, and a vibrating hammer is arranged on the vibrating hammer shaft. The vibrating hammer is arranged above the outer furnace tube of the rotary furnace, a plurality of arc protruding devices are arranged on the outer furnace tube of the rotary furnace, multi-point high-frequency vibrating can be achieved, accumulated materials and wall adhering materials in the furnace tube can be better vibrated down and rapidly rotated to be discharged out of the furnace, the vibrating hammer can conduct multi-point vibrating, the contact position of the vibrating hammer is not fixed in the knocking process, and the vibrating hammer is not prone to falling off. The furnace tube metal shell can be prevented from being damaged due to fatigue, serious local abrasion of the furnace tube metal shell is avoided, and the overall service life of the furnace tube is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary furnace production, and specifically relates to a vibration hammer device for the outer furnace tube of a rotary furnace. Background Art

[0002] The outer furnace tube vibration device is one of the important equipment operation links in the production of powder by a rotary furnace. Especially when producing ultrafine powder, the powder has small particle size, large specific surface energy, and there are phenomena such as agglomeration and adhesion between particles, resulting in wall sticking, blockage, caking of the material during the flow in the furnace tube of the rotary furnace, and poor material feeding.

[0003] Most of the existing vibration hammers for the outer furnace tube of a rotary furnace are motor vibration hammers and air vibration hammers. The motor vibration hammers are large in size and low in efficiency. High-frequency vibration has great damage to the furnace tube, and low-frequency vibration cannot achieve good vibration effect, and the manufacturing and maintenance costs are high; the air vibration hammers have loud noise, the impact force is difficult to adjust and is easy to damage the furnace tube, and the maintenance cost is high. Both of these types of vibration hammers require additional auxiliary systems to control the frequency and strength of the vibration hammer, the vibration points cannot be changed, and long-term use will cause fatigue of the metal shell of the furnace tube and damage the furnace tube. In addition, during the knocking process of the traditional vibration hammer, due to the fixed contact position, it is easy to cause serious local wear of the metal shell of the furnace tube, affecting the overall service life of the furnace tube. Content of the Utility Model

[0004] The purpose of the utility model is to provide a vibration hammer device for the outer furnace tube of a rotary furnace to solve at least one of the problems and defects mentioned in the above background art.

[0005] Provide a vibration hammer device for the outer furnace tube of a rotary furnace, including a support frame and the outer furnace tube of the rotary furnace. It is characterized in that a hammer handle seat is arranged on the support frame, a hammer handle shaft is connected to the hammer handle seat, a vibration hammer handle is fixedly connected to the hammer handle shaft, a vibration hammer shaft is rotatably connected to the vibration hammer handle, a vibration hammer is arranged on the vibration hammer shaft, the vibration hammer is arranged above the outer furnace tube of the rotary furnace, and a number of arc convex devices are arranged on the outer furnace tube of the rotary furnace.

[0006] Further, the vibration hammer is a circular vibration hammer, with a hole in the middle of the cylinder as a connecting shaft; the vibration hammer and the vibration hammer handle are clamped on the vibration hammer shaft through high-strength bolts and self-locking nuts and fixedly connected. A pair of support rods are connected to the vibration hammer handle by gas welding to increase the stress area and prevent cracking. The vibration hammer is provided with bolt holes, and high-strength bolts and high-strength self-locking nuts are used to ensure long-term fixation. The structure is simple and practical, with a diameter of 15 - 40 cm, a weight of 3 - 15 kg, and a width of 3 - 13 cm. It is slidable and rotates with the arc convex device.

[0007] Further, a number of shock absorption holes are arranged on the vibration hammer, and the number of shock absorption holes is used for shock absorption and reducing the influence of the vibration hammer caused by high temperature.

[0008] Furthermore, the hammer handle base and the vibrating hammer handle are connected by a hammer handle shaft, and the hammer handle shaft is rotatably connected to the hammer handle base.

[0009] Furthermore, a plurality of the arc-shaped convex devices are uniformly arranged on the outer furnace tube of the rotary furnace along the circumferential direction.

[0010] Furthermore, the height of the arc-shaped convex device is H, and H is 15 - 45 cm. The appropriate height reduces the direct contact area between the vibrating hammer and the outer furnace tube of the rotary furnace, reduces the damage caused to the vibrating hammer by high temperature, and improves its service life.

[0011] Furthermore, the radian of the arc-shaped convex device is α, and α is 5 - 30°. The appropriate radian design of the arc-shaped convex device 6 can ensure that the vibrating hammer maintains the correct track during the vibration process, reduces the resulting failures. By adjusting the radian, the contact area and contact force between the vibrating hammer and the arc-shaped convex device can be controlled, optimizing the energy transfer and enhancing the overall vibration efficiency.

[0012] Furthermore, limiting panels are arranged on both sides of the arc-shaped convex device, and the width is greater than the width of the vibrating hammer. The limiting panels on both end faces can ensure the normal operation of the vibrating hammer on the arc-shaped convex device, preventing it from falling to the bottom of the furnace tube and becoming ineffective due to single-sided deflection caused by loosening.

[0013] Furthermore, the vibrating hammer is driven by the outer furnace tube of the rotary furnace. During the operation of the rotary furnace, the outer furnace tube of the rotary furnace serves as the power source, driving the vibrating hammer handle and the vibrating hammer to move up and down along the arc protrusion. Utilizing the height of the protrusion, the potential energy accumulated by the weight of the vibrating hammer and the vibrating hammer handle is completely converted into elastic potential energy by free fall motion, thereby achieving the vibration effect. Compared with other vibrating hammers, this design does not require an additional motor. Using the furnace tube of the rotary furnace as the driving force and without an additional driving device for the vibrating hammer, it does not consume too much load and can achieve an energy-saving effect.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] A large number of arc-shaped convex devices are uniformly arranged on the outer furnace tube of the rotary furnace. The vibration frequency per unit time is equal to the number of arc-shaped convex devices multiplied by the furnace tube rotation speed, enabling multi-point high-frequency vibration. This can better vibrate the accumulated materials and adhered materials inside the furnace tube, quickly rotating them out of the furnace, thereby ensuring the stable quality of the produced products. The vibration force can be significantly reduced, avoiding the fatigue of the metal outer shell of the furnace tube and the resulting furnace tube damage, as well as severe local wear of the metal outer shell of the furnace tube, and enhancing the overall service life of the furnace tube.

[0016] In addition, the vibrating hammer can be placed on the hammer handle seat by reversely rotating the hammer handle shaft of the vibrating hammer handle, which is convenient for the replacement, disassembly and maintenance of the vibrating hammer; it is also convenient for the vibrating hammer to cancel or start using its vibrating function at any time. Brief Description of the Drawings

[0017] For the convenience of those skilled in the art to understand, the following further describes the present invention in conjunction with the drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of a vibrating hammer device for the outer furnace tube of a rotary furnace;

[0019] Figure 2 It is a schematic three-dimensional structure diagram of the vibrating hammer provided by an embodiment of the present invention;

[0020] Figure 3 It is a schematic structure diagram of the arc convex device provided by an embodiment of the present invention.

[0021] In the figure: 1. Hammer handle seat; 2. Hammer handle shaft; 3. Vibrating hammer handle; 4. Vibrating hammer shaft; 5. Vibrating hammer; 6. Arc convex device; 61. Limit panel; 7. Outer furnace tube of the rotary furnace; 8. Support frame; 9. Shock absorption hole. Detailed Description of the Embodiment

[0022] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, 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 of the present invention.

[0024] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", and "connection" shall be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0026] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] Please refer to Figures 1-3 As shown, in the embodiment of the present utility model, a rotary furnace outer furnace tube vibrating hammer device includes a support frame 8 and a rotary furnace outer furnace tube 7. A hammer handle seat 1 is arranged on the support frame 8, and a hammer handle shaft 2 is connected to the hammer handle seat 1. The hammer handle seat 1 provides a fixed position for the hammer handle shaft 2 to ensure that the vibrating hammer 5 moves on the correct track. A vibrating hammer handle 3 is fixedly connected to the hammer handle shaft 2, a vibrating hammer shaft 4 is rotatably connected to the vibrating hammer handle 3, and a vibrating hammer 5 is arranged on the vibrating hammer shaft 4. The vibrating hammer 5 is arranged above the rotary furnace outer furnace tube 7 to achieve the actual vibration effect on the furnace tube, converting the potential energy of its fall into elastic potential energy to enhance the vibration effect on the inner wall of the furnace tube. A plurality of arc convex devices 6 are arranged on the rotary furnace outer furnace tube 7 to increase the contact area with the vibrating hammer, ensuring multi-point and high-frequency vibration, thereby effectively removing the accumulated material and sticky wall material inside the furnace tube. Increase the contact area with the vibrating hammer to ensure multi-point and high-frequency vibration, thereby effectively removing the accumulated material and sticky wall material inside the furnace tube

[0029] When the outer furnace tube 7 of the rotary furnace rotates, the support frame 8 and the hammer handle base 1 are fixed, and the vibrating hammer handle 3 and the vibrating hammer 5 move up and down under the guidance of the arc convex device 6. The vibrating hammer 5 falls due to gravity, accumulating potential energy, and generating elastic potential energy when contacting the arc convex device 6, completing the vibration of the inner wall of the outer furnace tube 7 of the rotary furnace. Through rapid vibration at multiple points, it is ensured that the material accumulation ability is removed, while reducing the vibration force, minimizing the impact on the furnace tube, maintaining its stability, and enabling vibration at multiple points and high frequencies. In this way, the accumulated material and adhered material inside the furnace tube can be better vibrated off. The vibration force can be significantly reduced, avoiding the phenomenon of fatigue of the metal shell of the furnace tube and causing damage to the furnace tube, and preventing serious local wear of the metal shell of the furnace tube, thus improving the overall service life of the furnace tube;

[0030] In one embodiment, please refer to Figure 1 and Figure 3 , the vibrating hammer 5 is a vibrating hammer with a circular shape. The vibrating hammer 5 is circular, with a diameter of 15 - 40 cm, a weight of 3 - 15 kg, and a width of 3 - 13 cm. It is slidable and rotates with the arc convex device 6.

[0031] In one embodiment, please refer to Figure 1 and Figure 2 , a number of shock absorption holes 9 are provided on the vibrating hammer 5. The number of shock absorption holes 9 is used for shock absorption and reducing the influence of the vibrating hammer 5 caused by high temperature.

[0032] In one embodiment, please refer to Figure 1 and Figure 2 , the hammer handle base 1 and the vibrating hammer handle 3 are connected by a hammer handle shaft 2. The hammer handle shaft 2 is rotatably connected to the hammer handle base 1. The vibrating hammer 5 can rotate in the reverse direction through the vibrating hammer handle 3. The hammer handle shaft 2 places the vibrating hammer 5 on the hammer handle base 1, facilitating the replacement, disassembly, and maintenance of the vibrating hammer 5; it also facilitates the cancellation or start of the vibration function of the vibrating hammer 5 at any time.

[0033] In one embodiment, please refer to Figure 1 and Figure 2 , the height of the arc convex device 6 is H, and H is 15 - 45 cm. The appropriate height reduces the direct contact area between the vibrating hammer 5 and the outer furnace tube 7 of the rotary furnace, reducing the damage to the vibrating hammer 5 caused by high temperature and increasing its service life.

[0034] In one embodiment, please refer to Figure 1 and Figure 3 , the radian of the arc convex device 6 is α, and α is 5 - 30°. The appropriate radian design of the arc convex device 6 can ensure that the vibrating hammer 5 maintains the correct track during the vibration process, reducing the resulting failures. By adjusting the radian, the contact area and contact force between the vibrating hammer 5 and the arc convex device 6 can be controlled, optimizing the energy transfer and enhancing the overall vibration efficiency.

[0035] In one embodiment, please refer to Figure 1 and Figure 2 , on both sides of the arc convex device 6, there are provided limiting panels 61, which can ensure the normal operation of the vibratory hammer 5 on the arc convex device 6, and prevent the vibratory hammer 5 from falling to the bottom of the furnace tube due to single-sided deflection caused by loosening and becoming ineffective.

[0036] In one embodiment, please refer to Figure 1 and Figure 2 , the vibratory hammer 5 is driven by the rotary furnace outer furnace tube 7. The rotation of the rotary furnace outer furnace tube 7 generates centrifugal force, and the power is transmitted to the vibratory hammer 5 through the hammer handle shaft 2 and the vibratory hammer handle 3, driving it to vibrate up and down. By using the rotational power source of the furnace tube itself, the need for an additional motor is eliminated, the system is reduced, and energy-saving effects are achieved. The continuous operation of the rotary furnace outer furnace tube 7 ensures that the vibratory hammer vibrates at a stable frequency, improving the cleaning efficiency of the materials inside the rotary furnace outer furnace tube 7.

[0037] In a specific embodiment, when the furnace tube rotation speed of the rotary furnace outer furnace tube 7 is 4 r / min, during the feeding and discharging vibratory operation, the vibratory hammer 5 is a common cylinder on the market, with a hole in the middle of the cylinder as a connecting shaft; the vibratory hammer 5 and the vibratory hammer handle 3 are clamped on the vibratory hammer shaft 4 through high-strength bolts and self-locking nuts (not shown in the figure) and fixedly connected. A pair of support rods are connected to the vibratory hammer handle 3 by gas welding to increase the stress area and prevent cracking. The vibratory hammer 5 is fixed by the vibratory hammer shaft 4 made of alloy material, and the vibratory hammer 5 rotates during movement. At the same time, 4 holes are opened equidistantly on the vibratory hammer 5, which can achieve a damping effect and reduce the influence of the vibratory hammer 5 caused by high temperature. During the operation process, the rotary furnace outer furnace tube 7 serves as the power, driving the vibratory hammer handle 2 and the vibratory hammer 5 to move up and down along the arc convex device 6. By using the height of the arc convex device 6 rising, the potential energy accumulated by the weights of the vibratory hammer 5 and the vibratory hammer handle 2 is all converted into elastic potential energy by free fall motion, thus achieving a vibratory effect. During the operation of the rotary furnace, the height of the arc convex device 6 is 20 cm, and the radian is 30°; the number of arc convex devices 6 is 4, and the vibratory frequency is 16 times / minute (furnace tube rotation speed × 4 times / minute). This vibratory effect is good, the tungsten powder particle size is stable, and there is less accumulated material in the furnace.

[0038] In Embodiment 2:

[0039] When the furnace tube rotation speed of the outer furnace tube 7 of the rotary furnace is 3 r / min, during the feeding and vibration operation, the vibration hammer 5 has a diameter of 20 cm, a weight of 8 kg, and a width of 11 cm. It is a common cylinder on the market. A hole is opened in the middle of the cylinder to make a connecting shaft; the vibration hammer 5 and the hammer handle 3 are clamped on the hammer shaft 4 through high-strength bolts and self-locking nuts and fixedly connected. Gas welding is used to connect a pair of support rods on the hammer handle 3 to increase the stress area and prevent cracking. The vibration hammer 5 is fixed by the hammer shaft 4 made of alloy material, and the vibration hammer 5 keeps rotating during movement. At the same time, 3 holes are opened at equal distances on the vibration hammer 5, which can achieve the damping effect and reduce the influence of the vibration hammer 5 caused by high temperature. During the operation process, the outer furnace tube 7 of the rotary furnace is used as power to drive the hammer handle 2 and the vibration hammer 5 to move up and down along the arc-shaped convex device 6. Using the height of the arc-shaped convex device 6 rising, the potential energy accumulated by the weight of the vibration hammer 5 and the hammer handle 2 is all converted into elastic potential energy by free-fall motion, thus achieving the vibration effect. During the operation of the rotary furnace, the height of the arc-shaped convex device 6 is 30 cm and the radian is 20°; the number of arc-shaped convex devices 6 is 5, and the vibration frequency is 15 times / minute (the furnace tube rotation speed is 5 times / minute). The vibration effect is good, the tungsten powder particle size is stable, and there is less accumulated material in the furnace.

[0040] Comparative example (motor vibration hammer) 3:

[0041] An electric motor vibration hammer is installed on the upper part of the outer furnace tube 7 of the rotary furnace. When the rotation speed of the outer furnace tube 7 of the rotary furnace is 4 r / min, during the feeding and vibration operation, the electric motor vibration hammer has a diameter of 35 cm, a weight of 16 kg, and a width of 13 cm. It is a common cylinder on the market. The outer furnace tube is single-point vibrated by the electric motor drive at a set vibration frequency of 8 times / minute. The vibration effect is general, and there is more accumulated material in the furnace.

[0042] The present utility model has recorded the following information through experiments:

[0043] Table 1 shows the stability of the BET particle size of the tungsten powder produced during the normal operation of the rotary furnace in three implementation modes, and Table 2 shows the weight of the accumulated material cleaned in the furnace at the end of each month for six consecutive months during the normal operation of the rotary furnace in three implementation modes.

[0044] Table 1 BET particle size of tungsten powder

[0045]

[0046] It can be seen from Table 1 that under Examples 1 and 2, the extreme difference of the BET fluctuation of the continuously produced tungsten powder is only 15 nm, while the extreme difference of the BET fluctuation of the tungsten powder in Comparative Example 3 is 54 nm. The former is significantly more stable than the latter, indicating that the product quality stability of the former is good and has obvious advantages.

[0047] Table 2 Weight of the accumulated material cleaned in the furnace at the end of each month

[0048]

[0049]

[0050] From Table 2, look at the weight of the accumulated material in the furnace cleaned at the end of each month for six consecutive months:

[0051] The weight of the accumulated material in the furnace of Example 1 is the least, that of Example 2 increases slightly, and that of Comparative Example 3 is the largest, indicating that the vibration effect of the example is significantly better than that of the comparative example; the furnace tube rotation speed of Example 1 is 4 r / min, which is faster than 3 r / min of Example 2, and the weight of the accumulated material in the furnace is slightly less, indicating that the greater the furnace tube rotation speed, the less the accumulated material in the furnace.

[0052] In summary:

[0053] The furnace tube rotation speeds of Example 1 and Comparative Example 3 are both 4 r / min, but the accumulated material amount of Comparative Example 3 is nearly twice that of Example 1, and the particle size fluctuation is also very large, indicating that a single vibration hammer, under the condition of only one vibration point, even if the vibration force is increased, its vibration effect is not good. And the vibration hammer device of the present design with a large number of arc-shaped convex devices 6 can perform multi-point and high-frequency vibration, and better rotate the accumulated material and wall-adhering material inside the furnace tube out quickly under vibration, so as to ensure the stable quality of the produced products and greatly reduce the vibration force.

[0054] The above content is only an example and description of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined by this claim book, they should all belong to the protection scope of the present utility model.

Claims

1. A vibration hammer device for the outer furnace tube of a rotary furnace, comprising a support frame (8) and the outer furnace tube (7) of the rotary furnace, characterized in that, A hammer handle base (1) is provided on the support frame (8). A hammer handle shaft (2) is connected to the hammer handle base (1). A vibration hammer handle (3) is fixedly connected to the hammer handle shaft (2). A vibration hammer shaft (4) is rotatably connected to the vibration hammer handle (3). A vibration hammer (5) is provided on the vibration hammer shaft (4). The vibration hammer (5) is disposed above the outer furnace tube (7) of the rotary furnace. A plurality of arc-shaped convex devices (6) are provided on the outer furnace tube (7) of the rotary furnace.

2. The rotary furnace external furnace tube vibrating hammer device according to claim 1, characterized in that The vibration hammer (5) is a vibration hammer in a circular shape.

3. The rotary furnace external furnace tube vibration hammer device according to claim 1, characterized in that, A plurality of shock-absorbing holes (9) are provided on the vibration hammer (5).

4. A rotary furnace outer furnace tube vibrating hammer device according to claim 1, characterized in that, The hammer handle base (1) is connected to the vibration hammer handle (3) through the hammer handle shaft (2), and the hammer handle shaft (2) is rotatably connected to the hammer handle base (1).

5. A rotary furnace outer furnace tube vibrating hammer device according to claim 1, characterized in that, A plurality of the arc-shaped convex devices (6) are uniformly arranged on the outer furnace tube (7) of the rotary furnace along the circumferential direction.

6. The rotary furnace external furnace tube vibrating hammer device according to claim 5, characterized in that, The height of the arc-shaped convex device (6) is H, and H is 15 - 45 cm.

7. A rotary furnace outer furnace tube vibration hammer device according to claim 5, characterized in that, The radian of the arc-shaped convex device (6) is α, and α is 5 - 30°.

8. A rotary furnace outer furnace tube vibration hammer device according to claim 5, characterized in that, Limiting panels (61) are provided on both sides of the arc-shaped convex device (6).

9. The rotary furnace external furnace tube vibrating hammer device according to claim 1, characterized in that, The vibration hammer (5) is driven by the outer furnace tube (7) of the rotary furnace.

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