A wet pelletizing device for refractory materials

Abstract

The present invention provides a wet ball forming device for refractory materials, which comprises a casing, and the ball forming device is installed in the spherical cavity of the casing; a transmission shaft and a follower shaft are installed in the casing, and a first swing block and a second swing block are respectively fixed at the end parts of the two shafts. The angles between the first swing block and the transmission shaft and between the second swing block and the follower shaft are both obtuse angles. The first swing block and the second swing block are connected by a rotating shaft, and the rotating shaft is perpendicular to the first swing block and the second swing block at the same time. The first swing block, the second swing block and the rotating shaft are all located in the same plane. The connection points between the first swing block and the transmission shaft and between the second swing block and the follower shaft are respectively located on both sides of the rotating shaft; the ball forming device comprises a swinging body, a pot body and a self-rotation driving device. The swinging body is installed on the rotating shaft, and the transmission shaft drives the swinging body to swing; the self-rotation driving device drives the pot body to rotate, so that the powdery raw materials are rotated into balls. The present invention can solve the problems of low roundness of the balls processed by the ball forming machine and low ball forming efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of refractory processing, and particularly relates to a wet ball forming device for refractory materials. Background Art

[0002] Ball forming is a process in refractory processing. In this process, a ball forming machine is used to convert the ground powder raw materials into green ball blanks with a diameter of 1 - 2 cm, and then the green blanks are calcined. The powder material is placed in the pot body of the ball forming machine. The pot body is driven by a driving device to rotate, and at the same time, water mist is intermittently sprayed to increase the viscosity of the powder. The powder material rolls under the action of centrifugal force, and its volume gradually increases to form a sphere or a spherical - like body.

[0003] In the existing ball forming machine, the pot body can only rotate self - axially, and the rolling path of the powder material is relatively fixed. As a result, the ball forming volume tends to increase in a specific direction, resulting in a low roundness of the formed balls and a low ball forming efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a wet ball forming device for refractory materials to solve the problems of low roundness and low ball forming efficiency of the balls processed by the ball forming machine.

[0005] The present invention provides the following technical solutions:

[0006] A wet ball forming device for refractory materials includes a machine shell. A spherical cavity is provided inside the machine shell, and the ball forming device is installed in the spherical cavity. A transmission shaft and a follower shaft are rotatably installed inside the machine shell. A first swing block and a second swing block are respectively fixed at the ends of the transmission shaft and the follower shaft. The angles between the first swing block and the transmission shaft, and between the second swing block and the follower shaft are both obtuse angles. The first swing block and the second swing block are connected by a rotating shaft, and the rotating shaft is perpendicular to the first swing block and the second swing block at the same time. The first swing block, the second swing block and the rotating shaft are all in the same plane. The connection points of the first swing block with the transmission shaft and the second swing block with the follower shaft are respectively located on both sides of the rotating shaft.

[0007] The ball forming device includes a swinging body, a pot body and a self - rotation driving device. The swinging body is installed on the rotating shaft. When the transmission shaft rotates, it drives the swinging body to swing in an arc - shaped trajectory. The self - rotation driving device is fixed on the swinging body. A cavity is provided inside the swinging body, and the pot body is located in this cavity. The rotating shaft is connected to the pot body in a transmission manner. The self - rotation driving device drives the rotating shaft to drive the pot body to rotate synchronously. The pot body is used to rotate the powdery raw materials into balls.

[0008] Preferably, the rotation driving device includes a first motor, a first driving wheel, and a first driven wheel. The first motor is mounted on the swinging body, the first motor is drivingly connected to the first driving wheel, the first driving wheel meshes with the first driven wheel, and the first driven wheel is fixedly mounted on the rotating shaft.

[0009] Preferably, the pot body includes a pot main body and a cover fixed on the pot main body. The cover is provided with an openable first feeding window. A sealed connection is provided between the rotating shaft and the pot main body, and between the rotating shaft and the cover.

[0010] Preferably, the cross-section of the swinging body is olive-shaped. The swinging body is provided with an arc-shaped bottom wall that cooperates with the pot main body. A top cover is fixed above the arc-shaped bottom wall, and a second feeding port is provided on the top cover.

[0011] Furthermore, a pair of follower wheels are pivotally connected to the outer wall of the swinging body. An arc-shaped guide groove for guiding the swinging body is provided on the inner wall of the machine shell, and the follower wheels rollingly friction with the guide groove.

[0012] Furthermore, the ball forming device includes a first ball forming device and a second ball forming device. The two ends of the follower shaft are respectively drivingly connected to the first ball forming device and the second ball forming device. The first ball forming device and the second ball forming device are arranged as mirror images of each other. Two spherical cavities and a connection cavity connecting the two spherical cavities are correspondingly provided in the machine shell, and the follower shaft is located in the connection cavity.

[0013] Preferably, a fixing strip for positioning the follower shaft is formed in the connection cavity. A positioning hole that cooperates with the follower shaft is provided in the fixing strip, and the follower shaft rotates in the positioning hole.

[0014] Furthermore, the fixing strip divides the connection cavity into two sliding cavities. Two sliding members are installed in each sliding cavity. The sliding members can slide closely along the cavity wall of the sliding cavity, and the sliding members are spherically hinged to the adjacent swinging body.

[0015] Preferably, the sliding member includes a slider and a support rod. The two ends of the support rod are respectively spherically hinged inside the slider and on the outer wall of the swinging body.

[0016] Preferably, the end of the transmission shaft connected to the first ball forming device extends outside the machine shell and is drivingly connected to a second driven wheel. The second driven wheel is connected to a second driving wheel by a conveyor belt, and the second driving wheel is mounted on the output shaft of a second motor. The second motor can drive the transmission shaft to rotate.

[0017] The beneficial effects of the present invention are:

[0018] In the present invention, a ball forming pot is installed inside a swinging body. A rotation driving device drives a rotating shaft to rotate, and the rotating shaft drives the pot body to rotate. Under the action of centrifugal force, the wet powdery refractory material in the pot body is turned into spherical shapes. At the same time, a transmission shaft is rotated. By virtue of the specific connection structure among the transmission shaft, the first swing block, the rotating shaft, the second swing block and the follower shaft in this device, the swinging body swings in a three-dimensional space in both the front-back direction and the left-right direction simultaneously, that is, the pot body swings in this three-dimensional space while rotating, accelerating the ball forming efficiency, and the formed spherical particles have a higher roundness and are more uniform, smooth and even.

[0019] In the present invention, a first ball forming device and a second ball forming device are mirror-installed inside a casing. The two ball forming devices are connected by a follower shaft. When the transmission shaft rotates, the follower shaft causes the first ball forming device and the second ball forming device to swing in opposite directions. Therefore, only one driving part is needed to drive the two ball forming devices to swing together simultaneously, reducing the number of components, and the double-station structure further improves the ball forming efficiency. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 is a schematic diagram of the internal structure of the swinging body of the present invention in another swinging state;

[0023] Figure 3 is Figure 1 a cross-sectional structure schematic diagram at A-A in;

[0024] Figure 4 is a front view structure schematic diagram of the top cover of the present invention;

[0025] Figure 5 is an enlarged structure schematic diagram of the rotation driving device of the present invention;

[0026] Figure 6 is a connection structure schematic diagram of a support rod and an arc-shaped bottom wall of the present invention.

[0027] The labels in the figure are: 1. housing; 2. base; 3. spherical cavity; 4. connecting cavity; 5. follower shaft; 6. transmission shaft; 7. second driven wheel; 8. second driving wheel; 9. second motor; 10. first swing block; 11. second swing block; 12. rotating shaft; 13. first ball forming device; 14. second ball forming device; 15. swinging body; 16. pot body; 17. self-rotation driving device; 18. arc-shaped bottom wall; 19. top cover; 20. second feed inlet; 21. follower wheel; 22. guide groove; 23. cavity; 24. first motor; 25. first driving wheel; 26. first driven wheel; 27. pot main body; 28. cover body; 29. form; 30. fixing strip; 31. limiting block; 32. slider; 33. support rod; 34. conveyor belt. Detailed implementation mode

[0028] As Figure 1 and Figure 2 shown, a wet ball forming device for refractory materials includes a housing 1, the housing 1 is fixedly installed on the base 2, spherical cavities 3 are respectively arranged on the left and right sides inside the housing 1, two ball forming devices are respectively installed in the spherical cavities 3, the two spherical cavities 3 are communicated by a connecting cavity 4, and a follower shaft 5 is rotatably installed in the connecting cavity 4.

[0029] A transmission shaft 6 is rotatably installed inside the housing 1, the end of the transmission shaft 6 extends outside the housing 1 and is drivingly connected to a second driven wheel 7, the second driven wheel 7 is connected to a second driving wheel 8 by a conveyor belt 3, the second driving wheel 8 is installed on the output shaft of a second motor 9, and the second motor 9 can drive the transmission shaft 6 to rotate.

[0030] As Figures 1 to 3 shown, first swing blocks 10 and second swing blocks 11 are respectively fixed at the ends of the transmission shaft 6 and the follower shaft 5, the angles between the first swing block 10 and the transmission shaft 6 and between the second swing block 11 and the follower shaft 5 are both obtuse angles, the first swing block 10 and the second swing block 11 are connected by a rotating shaft 12, the two ends of the rotating shaft 12 are respectively installed on the bearings inside the first swing block 10 and the second swing block 11, the rotating shaft 12 is perpendicular to the first swing block 10 and the second swing block 11 at the same time, the first swing block 10, the second swing block 11 and the rotating shaft 12 are all located in the same plane, the connection points of the first swing block 10 and the transmission shaft 6 and the connection points of the second swing block 11 and the follower shaft 5 are respectively located on both sides of the rotating shaft 12, so when the transmission shaft 6 rotates clockwise, the two swing blocks drive the rotating shaft 12 to swing reciprocally in the three-dimensional space in the left-right direction and the front-back direction at an inclined angle.

[0031] The ball forming device includes a swinging body 15, a pot body 16 and a self-rotation driving device 17, the swinging body 15 is installed on the rotating shaft 12, the swinging body 15 swings together with the rotating shaft 12, the cross section of the swinging body 15 is olive-shaped, the swinging body 15 is provided with an arc-shaped bottom wall 18, and a top cover 19 is fixed above the arc-shaped bottom wall 18. As Figure 4As shown in the figure, a second feed inlet 20 is provided on the top cover 19. A pair of support shafts are symmetrically installed at the two small end parts of the olive shape of the swing body 15. A support block is pivotally connected to the support shafts. The support block can rotate around the support shafts. A follower wheel 21 is installed on the support block. An arc-shaped guide groove 22 for guiding the swing body 15 is provided on the inner wall of the machine shell 1. The width of the guide groove 22 is adapted to the thickness of the follower wheel 21. The follower wheel 21 is located in the guide groove 22. When the swing body 15 swings, the follower wheel 21 moves along an arc-shaped track and has rolling friction with the guide groove 22. The follower wheel 21 and the guide groove 22 limit the two ends of the swing body 15 to move within a plane, so that the abdomen of the swing body 15 can swing smoothly.

[0032] A cavity 23 is provided inside the swing body 15. The self-rotation driving device 17 and the pot body 16 are both located in this cavity. The rotating shaft 12 penetrates through the pot body 16 and is connected to the pot body 16 in a transmission manner. The connection part of the pot body 16 and the rotating shaft 12 is sealed and fixed by a seal. The self-rotation driving device 17 drives the rotating shaft 12 to drive the pot body 16 to rotate synchronously. When the pot body 16 rotates, the wet powdery raw materials are rotated into balls under the action of centrifugal force.

[0033] Specifically, as Figure 5 shown, the self-rotation driving device 17 includes a first motor 24, a first driving wheel 25 and a first driven wheel 26. The first motor 24 is installed on the inner wall of the top cover of the swing body 15. The output shaft of the first motor 24 is key-connected to the first driving wheel 25. The first driving wheel 25 meshes with the first driven wheel 26. The first driven wheel 26 is fixedly installed on the rotating shaft 12. The first motor 24 drives the rotating shaft 12 to rotate.

[0034] The pot body 16 includes a pot main body 27 and a cover body 28 fixed on the pot main body 27. The pot main body 27 is a structure imitating the arc-shaped bottom wall 18 of the swing body 15. The pot main body 27 can rotate freely relative to the arc-shaped bottom wall 18. A first feed window is provided on the cover body 28. A window body 29 is hinged in the first feed window by a hinge. When the pot body rotates, the first feed window is sealed by the window body 29 to prevent the powder from being thrown out when the pot body swings. When taking materials, just open the window body. Among them, the area of the second feed inlet on the top cover 19 of the swing body is larger than the area of the first feed window, and a larger window is provided on the front side of the machine shell 1, which is convenient for feeding and taking materials. In order to improve the ball forming uniformity, a spray head and a small water tank connected to each other can be installed on the cover body 28 to intermittently spray water mist into the pot body, so that the powder rolls and wraps layer by layer to form balls.

[0035] The ball forming device includes a first ball forming device 13 and a second ball forming device 14. Both ends of the follower shaft 5 are respectively connected to the first ball forming device 13 and the second ball forming device 14 in a driving manner. The first ball forming device 13 and the second ball forming device 14 are arranged in two spherical cavities 3 in a mirror image manner, and the follower shaft 5 is located in the connection cavity 4. Specifically, a fixing strip 30 for positioning the follower shaft 5 is provided in the connection cavity 4. The fixing strip 30 is integrally formed with the machine shell 1. A positioning hole for cooperating with the follower shaft 5 is provided in the fixing strip 30. When the transmission shaft 6 rotates, it drives the follower shaft 5 to rotate in the positioning hole. Limit blocks 31 are installed at both ends of the follower shaft 5. The two limit blocks 31 respectively abut against the two end faces of the fixing strip 30, thereby limiting the follower shaft 5 axially and preventing the follower shaft 5 from axially moving.

[0036] As Figure 2 and Figure 6 shown, the fixing strip 30 divides the connection cavity 4 into two sliding cavities. Two sliding members are installed in each sliding cavity. The sliding members can slide closely against the cavity wall of the sliding cavity. The sliding members are ball-jointed to the adjacent swinging body. Specifically, the sliding member includes a slider 32 and a support rod 33. Both ends of the support rod 33 are respectively ball-jointed in the slider 32 and on the arc-shaped bottom wall 18 of the swinging body. When the swinging body 15 swings, the sliding member follows the swinging body 15 and moves left or right, and the support rod 33 swings back and forth and left and right accordingly. The support rod 33 flexibly supports the arc-shaped bottom wall 18 of the swinging body, preventing the centrifugal force of the self-rotation of the pot body 16 from impacting the arc-shaped bottom wall 18 and causing the swinging body to shake. The pulling force of the support rod 33 on the swinging body can also prevent the swinging body 15 from being difficult to reverse the swinging direction due to large swinging inertia.

[0037] The working process of this device is as follows:

[0038] Powdery refractory raw materials with a certain moisture content are fed into the pot body 16, and the window body 29 of the first feed window is closed;

[0039] The first motor 24 is started to drive the rotating shaft 12 to rotate, and then drive the pot body 16 to rotate self. The powder in the pot body 16 rolls in a spiral trajectory under the action of centrifugal force.

[0040] The second motor 9 is started to drive the transmission shaft 6 to rotate. Through the coordinated action among the first swing block 10, the rotating shaft 12, the second swing block 11 and the follower shaft 5, the swinging body 15 swings in the three-dimensional space; the powder in the pot body 16 is simultaneously pushed in multiple directions during rolling, accelerating the ball forming efficiency and the roundness of the ball forming particles;

[0041] The follower shaft 5 drives the first ball forming device 13 and the second ball forming device 14 on the left and right sides to swing synchronously and reversely, further improving the ball forming efficiency;

[0042] During the ball forming process, the nozzle can be controlled to intermittently spray water mist on the powder to make the powder quickly form balls.

[0043] After the ball forming is completed, open the form 29 and use a shovel to take out the refractory balls from the pot body 16 and the casing 1.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A wet pelletizing device for refractory materials, characterized in that, It includes a housing, a spherical cavity is provided inside the housing, and a ball forming device is installed in the spherical cavity; a transmission shaft and a follower shaft are rotatably installed inside the housing, a first swing block and a second swing block are respectively fixed at the end parts of the transmission shaft and the follower shaft, the included angles between the first swing block and the transmission shaft, and between the second swing block and the follower shaft are both obtuse angles, the first swing block and the second swing block are connected by a rotating shaft and the rotating shaft is perpendicular to the first swing block and the second swing block at the same time, the first swing block, the second swing block and the rotating shaft are all located in the same plane, the connection point between the first swing block and the transmission shaft and the connection point between the second swing block and the follower shaft are respectively located on both sides of the rotating shaft; The ball forming device includes a swinging body, a pot body and a self-rotation driving device, the swinging body is installed on the rotating shaft, when the transmission shaft rotates, it drives the swinging body to swing in an arc trajectory; the self-rotation driving device is fixed on the swinging body, a cavity is provided inside the swinging body, the pot body is located in this cavity, the rotating shaft is connected to the pot body in a transmission manner, the self-rotation driving device drives the rotating shaft to drive the pot body to rotate synchronously, and the pot body is used to rotate the powdery raw material into balls; The self-rotation driving device includes a first motor, a first driving wheel and a first driven wheel, the first motor is installed on the swinging body, the first motor is drivingly connected to the first driving wheel, the first driving wheel meshes with the first driven wheel, and the first driven wheel is fixedly installed on the rotating shaft; The pot body includes a pot main body and a cover body fixed on the pot main body, an openable first feeding window is provided on the cover body, and both between the rotating shaft and the pot main body and between the rotating shaft and the cover body are sealed connections; The cross section of the swinging body is olive-shaped, the swinging body is provided with an arc-shaped bottom wall that cooperates with the pot main body, a top cover is fixed above the arc-shaped bottom wall, and a second feeding port is provided on the top cover.

2. The wet pelletizing device for refractory materials according to claim 1, characterized in that, A pair of follower wheels are pivotally connected to the outer wall of the swinging body, and an arc-shaped guide groove for guiding the swinging body is provided on the inner wall of the housing, and the follower wheels roll and rub against the guide groove.

3. The wet pelletizing device for refractory materials according to claim 2, characterized in that, The ball forming device includes a first ball forming device and a second ball forming device, the two ends of the follower shaft are respectively connected to the first ball forming device and the second ball forming device in a transmission manner, the first ball forming device and the second ball forming device are arranged as mirror images of each other, and two spherical cavities and a connecting cavity connecting the two spherical cavities are correspondingly provided inside the housing, and the follower shaft is located in the connecting cavity.

4. The wet pelletizing device for refractory materials according to claim 3, characterized in that, A fixing strip for positioning the follower shaft is formed in the connecting cavity, a positioning hole matching the follower shaft is provided in the fixing strip, and the follower shaft rotates in the positioning hole.

5. The wet pelletizing device for refractory materials according to claim 4, characterized in that, The fixing strip divides the connecting cavity into two sliding cavities, two sliding members are installed in each sliding cavity, the sliding members can slide closely against the cavity wall of the sliding cavity, and the sliding members are ball-jointed with the adjacent swinging body.

6. The wet pelletizing device for refractory materials according to claim 5, characterized in that, The sliding member includes a slider and a support rod, and the two ends of the support rod are respectively ball-jointed inside the slider and the arc-shaped bottom wall of the swinging body.

7. The wet pelletizing device for refractory materials according to any one of claims 3 to 6, characterized in that, The end of the transmission shaft connected to the first ball forming device extends outside the machine housing and is connected to the second driven wheel in a transmission manner. The second driven wheel is connected to the second driving wheel by a conveyor belt. The second driving wheel is mounted on the output shaft of the second motor, and the second motor can drive the transmission shaft to rotate.

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