Novel wear-resistant cavity of airflow grinding machine

Abstract

The utility model belongs to the technical field of airflow grinding machines, and particularly relates to a novel airflow grinding machine wear-resistant cavity which mainly comprises a base, a grinding mechanism is arranged at the upper end of the base and comprises a grinding disc, the bottom end of the grinding disc is connected with the top end of the base, an installation cavity is formed in the upper end of the grinding disc, and positioning grooves are formed in the two sides of the interior of the installation cavity. Mounting grooves are formed in the other two sides of the interior of the mounting cavity, a dismounting and mounting mechanism is arranged in the mounting cavity and comprises a grinding cavity, positioning blocks are mounted on the two sides of the grinding cavity, the positioning blocks are connected with the positioning grooves in an inserted mode, inserting blocks are mounted on the other two sides of the grinding cavity, the inserting blocks are connected with the mounting grooves in an inserted mode, and a feeding mechanism is arranged at the upper end of the grinding mechanism. Compared with the prior art, the grinding cavity can be rapidly replaced, when the grinding cavity is seriously damaged, the grinding cavity can be conveniently replaced in time, and the construction period is not affected.

Description

Technical Field

[0001] This utility model relates to the field of air jet mills and related technologies, and in particular to a novel wear-resistant cavity for an air jet mill. Background Technology

[0002] Air jet mills utilize the energy of airflow for pulverization. Specifically, they leverage the immense kinetic energy of a high-speed airflow generated by high-pressure steam passing through nozzles, causing material particles to impact and collide with each other, thus achieving the purpose of pulverization. Under the action of supersonic airflow, not only do the material particles collide with each other, but the airflow also exerts impact and shearing forces on the material particles. Simultaneously, the material also collides, impacts, rubs, and shears with the pulverizing chamber.

[0003] The existing air jet mill consists of upper and lower covers and a central annular grinding ring. The upper and lower covers are fixed to the upper and lower sides of the annular grinding ring, forming a grinding chamber. The high-speed scouring of the material makes the inside of the grinding chamber extremely prone to wear. If this wear is not addressed, it will affect the grinding effect. When the grinding chamber needs to be repaired or replaced, operators often need to remove multiple components connected to the grinding chamber to obtain sufficient operating space. During the removal process, various tools are required, making the operation cumbersome and time-consuming, which significantly extends the production interruption time and affects the company's production schedule. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by developing a novel wear-resistant cavity for an airflow grinding machine. This cavity allows for rapid replacement, enabling timely replacement when the cavity is severely damaged, without affecting the project schedule.

[0005] The technical solution of this utility model to solve the technical problem is as follows: a novel wear-resistant cavity for an airflow grinding machine, comprising a base, a grinding mechanism at the upper end of the base, the grinding mechanism comprising a grinding disc, the bottom end of the grinding disc being connected to the top end of the base, an installation cavity at the upper end of the grinding disc, positioning grooves on both sides of the interior of the installation cavity, and installation grooves on the other two sides of the interior of the installation cavity, a disassembly and assembly mechanism inside the installation cavity, the disassembly and assembly mechanism comprising a grinding cavity, positioning blocks installed on both sides of the grinding cavity, the positioning blocks being inserted into the positioning grooves, insert blocks installed on the other two sides of the grinding cavity, the insert blocks being inserted into the installation grooves, and a feeding mechanism at the upper end of the grinding mechanism.

[0006] Preferably, protrusions are slidably inserted on both sides of the bottom end of the insert block, wedge blocks are installed on the two opposite ends of a pair of protrusions, a spring is fixedly installed between the bottom ends of a pair of wedge blocks, and grooves are opened on both sides of the bottom end of the mounting groove, and the grooves are engaged with the protrusions.

[0007] The beneficial effect of adopting the above-mentioned further solution is that by engaging the protrusion and the groove, the insert block and the mounting groove can be fixed, and by installing a spring between the wedge blocks, the spring force can be used to reset the protrusion.

[0008] Preferably, each of the insert blocks has a pressure block slidably installed inside, and the bottom end of each pressure block is provided with a limiting groove adapted to a pair of wedge blocks, with the upper ends of the pair of wedge blocks disposed inside the limiting groove.

[0009] The beneficial effect of adopting the above-mentioned further solution is that by sliding the pressure block and opening a limiting groove at its bottom end that is adapted to a pair of wedge blocks, the upper ends of the pair of wedge blocks are set inside the limiting groove. When the pressure block is pressed down, the limiting groove will squeeze the pair of wedge blocks, causing them to converge inward, thereby driving the protrusion to retract. When the protrusion retracts, it separates from the groove, and the user can remove the grinding chamber from the installation cavity for easy replacement.

[0010] Preferably, the grinding chamber has several air holes on its outer side, and a sealing ring is fitted inside the air holes. A connecting pipe is installed on one side of the upper end of the grinding chamber, and the inner wall of the grinding chamber is coated with a nickel-based carbide ceramic coating with a thickness of 5-10 mm.

[0011] The beneficial effects of adopting the above-mentioned further solutions are as follows: by opening several air holes on the outside of the grinding chamber, it is convenient for grinding gas to enter the interior of the grinding chamber; by fitting sealing rings inside the air holes, the sealing between the air holes and the grinding nozzle can be improved, allowing gas to enter the interior of the grinding chamber better; by installing a connecting pipe on one side of the upper end of the grinding chamber, material can enter the interior of the grinding chamber; and by applying a nickel-based carbide ceramic coating to the inner wall of the grinding chamber, the resistance of the inner wall of the grinding chamber to erosion, impact wear, shear wear, and the corrosive effect of steam can be improved, further extending the service life of the grinding chamber.

[0012] Preferably, the inner wall of the grinding disc is provided with an air jet chamber, and a grinding nozzle is inserted into one side of the inner wall of the mounting cavity located at several air holes. One end of the grinding nozzle is connected to the air jet chamber, and the other end of the grinding nozzle abuts against the sealing ring. A steam nozzle is installed on the outer side of the grinding disc, and one end of the steam nozzle is connected to the air jet chamber.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by opening an air jet chamber on the inner wall of the grinding disc and connecting it with one end of the grinding nozzle, steam can enter the air jet chamber through the steam nozzle and then be ejected through the grinding nozzle. By abutting one end of the grinding nozzle with the sealing ring set inside the air hole, the sealing performance between the air hole and the grinding nozzle can be improved.

[0014] Preferably, the feeding mechanism includes a cover plate, and a discharge pipe is inserted into the center of the cover plate, with the bottom end of the discharge pipe inserted into the center of the upper end of the grinding chamber.

[0015] The beneficial effects of adopting the above-mentioned further solution are that by installing a cover plate, the upper end of the grinding disc can be sealed, and by opening a discharge pipe, the material inside the grinding chamber can enter the next process after being crushed. By inserting the bottom end of the discharge pipe into the center of the upper end of the grinding chamber, the bottom end of the discharge pipe can guide and block the airflow, thereby changing the airflow path.

[0016] Preferably, a feeding air nozzle is installed on one side of the upper end of the cover plate, a feeding hopper is installed on one side of the upper end of the feeding air nozzle, a sealing ball head is installed at the bottom end of the cover plate, the upper end of the sealing ball head communicates with the bottom end of the feeding air nozzle, and the bottom end of the sealing ball head is engaged with the upper end of the connecting pipe.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by installing a feed hopper on one side of the upper end of the feed nozzle, after the feed nozzle is ventilated, the material in the feed hopper can be blown into the interior of the grinding chamber. By installing a sealing ball head, when the cover plate and the grinding disc are closed, the bottom end of the sealing ball head is engaged with the upper end of the connecting pipe, improving the sealing performance of the connection between the two, so that all the material can enter the interior of the grinding chamber.

[0018] Preferably, the outer side of the grinding disc is equipped with several buckles, and the outer side of the cover plate is equipped with several retaining rings, and the buckles and retaining rings are engaged with each other.

[0019] The advantage of adopting the above-mentioned further solution is that by engaging the retaining ring and the buckle, it is convenient to fix the grinding disc and the cover plate.

[0020] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0021] By creating an installation cavity at the top of the grinding disc, with positioning grooves on both sides inside, the grinding cavity can be quickly positioned and installed. Installation grooves on the other two sides of the installation cavity facilitate fixing the grinding cavity. The separate design of the grinding cavity allows for easy assembly and disassembly by the user. When the grinding cavity is damaged due to prolonged use, it can be quickly replaced, preventing production delays caused by damage. Positioning blocks on both sides of the grinding cavity allow for easy insertion into the positioning grooves, facilitating quick installation. Inserts on the other two sides of the grinding cavity, after being inserted into the installation grooves, have sliding protrusions at their bottom ends that engage with grooves at the bottom of the installation grooves, securing the grinding cavity. A feeding mechanism facilitates feeding into the grinding cavity. A nickel-based carbide ceramic coating on the inner wall of the grinding cavity improves its resistance to erosion, impact wear, shear wear, and steam corrosion, further extending its service life. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of this utility model. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the unfolded three-dimensional structure of this utility model. Figure 2 ;

[0025] Figure 4 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0026] Figure 5 This is a front cross-sectional view of the insert block of this utility model.

[0027] The components are as follows: 1. Base; 2. Grinding mechanism; 21. Grinding disc; 22. Mounting groove; 23. Positioning groove; 24. Groove; 25. Steam nozzle; 26. Air jet chamber; 27. Grinding nozzle; 28. Mounting cavity; 3. Buckle; 4. Feeding mechanism; 41. Cover plate; 42. Discharge pipe; 43. Feeding air nozzle; 44. Feed hopper; 45. Sealing ball head; 5. Disassembly and assembly mechanism; 51. Grinding chamber; 52. Connecting pipe; 53. Positioning block; 54. Insert block; 55. Pressing block; 56. Wedge block; 57. Limiting groove; 58. Protrusion; 59. Spring; 510. Air hole; 6. Snap ring. Detailed Implementation

[0028] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0029] Example 1

[0030] See Figures 1 to 5 A novel wear-resistant cavity for an airflow grinding mill includes a base 1. A grinding mechanism 2 is located at the upper end of the base 1. The grinding mechanism 2 includes a grinding disc 21, the bottom of which is connected to the top of the base 1. An installation cavity 28 is formed at the upper end of the grinding disc 21. Positioning grooves 23 are formed on both sides of the interior of the installation cavity 28, and installation grooves 22 are formed on the other two sides. A disassembly / assembly mechanism 5 is located inside the installation cavity 28. The disassembly / assembly mechanism 5 includes a grinding cavity 51. Positioning blocks 53 are installed on both sides of the grinding cavity 51 and are inserted into the positioning grooves 23. Insert blocks 54 are installed on the other two sides of the grinding cavity 51 and are inserted into the installation grooves 22. A feeding mechanism 4 is located at the upper end of the grinding mechanism 2. By forming an installation cavity 28 at the upper end of the grinding disc 21 and positioning grooves 23 on both sides, the grinding cavity 51 can be quickly positioned and installed. The grinding chamber 51 is easily fixed by opening mounting slots 22 on the other two sides of the mounting cavity 28. By setting the grinding chamber 51 separately, it is easy for the user to disassemble and assemble it. When the grinding chamber 51 is damaged due to long-term use, the user can quickly replace it, so that the grinding machine will not delay the production schedule due to the damage of the grinding chamber 51. By installing positioning blocks 53 on both sides of the grinding chamber 51 and inserting them into the positioning slots 23, it is easy for the user to quickly install the grinding chamber 51 into the interior of the mounting cavity 28. By installing insert blocks 54 on the other two sides of the grinding chamber 51 and inserting them into the mounting slots 22, the protrusions 58 slidably installed on both sides of the bottom end of the insert blocks 54 are inserted into the grooves 24 opened on both sides of the bottom end of the mounting slots 22, which can fix the grinding chamber 51. By installing the feeding mechanism 4, it is easy to feed materials into the grinding chamber 51.

[0031] Both sides of the bottom end of the insert 54 are slidably fitted with protrusions 58. Both opposite ends of a pair of protrusions 58 are fitted with wedges 56. A spring 59 is fixedly installed between the bottom ends of a pair of wedges 56. Both sides of the bottom end of the mounting groove 22 are provided with grooves 24. The grooves 24 are engaged with the protrusions 58. By engaging the protrusions 58 with the grooves 24, the insert 54 and the mounting groove 22 can be fixed. By installing the springs 59 between the wedges 56, the spring force of the springs 59 can be used to reset the protrusions 58.

[0032] Each insert 54 has a pressure block 55 slidably installed inside. The bottom end of each pressure block 55 is provided with a limiting groove 57 that fits a pair of wedge blocks 56. The upper ends of the pair of wedge blocks 56 are set inside the limiting groove 57. By sliding the pressure block 55 and providing the limiting groove 57 at its bottom end to fit a pair of wedge blocks 56, the upper ends of the pair of wedge blocks 56 are set inside the limiting groove 57. When the pressure block 55 is pressed down, the limiting groove 57 will squeeze the pair of wedge blocks 56, causing them to converge inward, thereby causing the protrusion 58 to retract. When the protrusion 58 retracts, it separates from the groove 24, and the user can then remove the grinding chamber 51 from the installation chamber 28 for easy replacement.

[0033] Several air holes 510 are provided on the outer side of the grinding chamber 51, and sealing rings are fitted inside the air holes 510. A connecting pipe 52 is installed on the upper side of the grinding chamber 51. The inner wall of the grinding chamber 51 is coated with a nickel-based carbide ceramic coating with a thickness of 5-10 mm. By providing several air holes 510 on the outer side of the grinding chamber 51, the grinding gas can be easily introduced into the interior of the grinding chamber 51. By fitting sealing rings inside the air holes 510, the sealing between the air holes 510 and the grinding nozzle 27 can be improved, allowing the gas to enter the interior of the grinding chamber 51 better. By installing the connecting pipe 52 on the upper side of the grinding chamber 51, the material can be introduced into the interior of the grinding chamber 51. By providing a nickel-based carbide ceramic coating on the inner wall of the grinding chamber 51, the resistance of the inner wall of the grinding chamber 51 to erosion, impact wear, shear wear, and steam corrosion can be improved, further extending the service life of the grinding chamber 51.

[0034] The inner wall of the grinding disc 21 is provided with an air jet chamber 26. The inner wall of the mounting cavity 28 is provided with grinding nozzles 27 on one side of several air holes 510. One end of the grinding nozzle 27 is connected to the air jet chamber 26, and the other end of the grinding nozzle 27 is in contact with the sealing ring. A steam nozzle 25 is installed on the outer side of the grinding disc 21. One end of the steam nozzle 25 is connected to the air jet chamber 26. By opening the air jet chamber 26 on the inner wall of the grinding disc 21 and connecting it with one end of the grinding nozzle 27, steam can be ejected through the grinding nozzle 27 after entering the air jet chamber 26 through the steam nozzle 25. By abutting one end of the grinding nozzle 27 with the sealing ring provided inside the air hole 510, the sealing between the air hole 510 and the grinding nozzle 27 can be improved.

[0035] The feeding mechanism 4 includes a cover plate 41, with a discharge pipe 42 inserted into the center of the cover plate 41. The bottom end of the discharge pipe 42 is inserted into the center of the upper end of the grinding chamber 51. By installing the cover plate 41, the upper end of the grinding disc 21 can be sealed. By opening the discharge pipe 42, the material inside the grinding chamber 51 can enter the next process after being crushed. By inserting the bottom end of the discharge pipe 42 into the center of the upper end of the grinding chamber 51, the bottom end of the discharge pipe 42 can guide and block the airflow, changing the airflow path.

[0036] A feeding nozzle 43 is installed on one side of the upper end of the cover plate 41. A feed hopper 44 is installed on one side of the upper end of the feeding nozzle 43. A sealing ball head 45 is installed at the bottom end of the cover plate 41. The upper end of the sealing ball head 45 communicates with the bottom end of the feeding nozzle 43. The bottom end of the sealing ball head 45 is engaged with the upper end of the connecting pipe 52. By installing the feed hopper 44 on one side of the upper end of the feeding nozzle 43, the material in the feed hopper 44 can be blown into the interior of the grinding chamber 51 after the feeding nozzle 43 is ventilated. By installing the sealing ball head 45, when the cover plate 41 and the grinding disc 21 are closed, the bottom end of the sealing ball head 45 is engaged with the upper end of the connecting pipe 52, improving the sealing performance of the connection between the two, so that all the material can enter the interior of the grinding chamber 51.

[0037] Several buckles 3 are installed on the outer side of the grinding disc 21, and several retaining rings 6 are installed on the outer side of the cover plate 41. The buckles 3 and retaining rings 6 are engaged with each other. By engaging the retaining rings 6 with the buckles 3, it is convenient to fix the grinding disc 21 and the cover plate 41.

[0038] Working principle

[0039] In use, align the positioning blocks 53 on both sides of the grinding chamber 51 with the positioning grooves 23 on both sides of the mounting cavity 28 of the grinding disc 21, and insert them into the positioning grooves 23 to initially position the grinding chamber 51. At the same time, align the insert blocks 54 on the other two sides of the grinding chamber 51 with the mounting grooves 22 and insert them into the mounting grooves 22. During the insertion of the insert blocks 54, the protrusions 58 on both sides of their bottom end automatically engage with the grooves 24 on both sides of the bottom end of the mounting groove 22 under the elastic force of the spring 59, completing the fixed installation of the grinding chamber 51. Then, cover the top of the grinding disc 21 with the cover plate 41. The bottom end of the discharge pipe 42 installed on it is inserted into the upper center of the grinding chamber 51. The cover plate 41 is engaged with the buckle 3 on the outside of the grinding disc 21 by the retaining ring 6 on its outside, thus fixing the cover plate 41 and the grinding disc 21. At this time, the material enters from the feed hopper 44. After the feed air nozzle 43 is vented, the material is blown into the sealing ball head 45. Since the bottom end of the sealing ball head 45 is engaged with the upper end of the connecting pipe 52, the material is sent into the grinding chamber 51 through the connecting pipe 52. Steam enters the jet chamber on the inner wall of the grinding disc 21 through the steam nozzle 25. 26. The steam is then ejected through the grinding nozzle 27, which communicates with the jet chamber 26. One end of the grinding nozzle 27 abuts against the sealing ring inside the air hole 510 of the grinding chamber 51, ensuring that steam enters the grinding chamber 51 from the air hole 510. The high-speed steam forms an airflow in the grinding chamber 51, causing the material particles to collide and rub against each other, thus achieving grinding. The nickel-based carbide ceramic coating on the inner wall of the grinding chamber 51 can effectively resist the impact and wear of the material and airflow, extending the service life of the grinding chamber 51. The ground material is then driven by the airflow in the grinding chamber 51 towards... The material moves upward to the discharge pipe 42. The bottom end of the discharge pipe 42 guides and blocks the airflow, changing the airflow path so that the material passes through the discharge pipe 42 into the next process. When it is necessary to replace the grinding chamber 51, slide the pressure block 55 inside the insert block 54 downward. The limiting groove 57 at the bottom of the pressure block 55 squeezes the wedge block 56, causing it to converge inward, which drives the protrusion 58 to retract and separate from the groove 24. At this time, the grinding chamber 51 can be removed from the installation chamber 28, and a new grinding chamber 51 can be installed. Repeat the installation steps to continue the grinding work.

[0040] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.

Claims

1. A novel wear-resistant cavity for an air jet mill, characterized in that, The device includes a base (1), and a grinding mechanism (2) is provided at the upper end of the base (1). The grinding mechanism (2) includes a grinding disc (21), the bottom end of which is connected to the top end of the base (1). An installation cavity (28) is provided at the upper end of the grinding disc (21). Positioning grooves (23) are provided on both sides of the interior of the installation cavity (28). Installation grooves (22) are provided on the other two sides of the interior of the installation cavity (28). A disassembly and assembly mechanism (5) is provided inside the installation cavity (28). The disassembly and assembly mechanism (5) includes a grinding cavity (51). Positioning blocks (53) are installed on both sides of the grinding cavity (51). The positioning blocks (53) are inserted into the positioning grooves (23). Insert blocks (54) are installed on the other two sides of the grinding cavity (51). The insert blocks (54) are inserted into the installation grooves (22). A feeding mechanism (4) is provided at the upper end of the grinding mechanism (2).

2. The wear-resistant cavity of a novel airflow mill according to claim 1, characterized in that, The bottom of the insert (54) is slidably inserted with protrusions (58) on both sides. A wedge block (56) is installed on the two opposite ends of the pair of protrusions (58). A spring (59) is fixedly installed between the bottom ends of the pair of wedge blocks (56). A groove (24) is opened on both sides of the bottom of the mounting groove (22). The groove (24) is engaged with the protrusion (58).

3. The wear-resistant cavity of a novel airflow mill according to claim 2, characterized in that, Each of the inserts (54) has a pressure block (55) slidably installed inside. The bottom end of each pressure block (55) is provided with a limiting groove (57) adapted to a pair of wedges (56). The upper ends of the pair of wedges (56) are located inside the limiting groove (57).

4. The wear-resistant cavity of a novel airflow mill according to claim 1, characterized in that, The grinding chamber (51) has several air holes (510) on its outer side. A sealing ring is fitted inside the air hole (510). A connecting pipe (52) is installed on one side of the upper end of the grinding chamber (51). The inner wall of the grinding chamber (51) is coated with a nickel-based carbide ceramic coating with a thickness of 5-10 mm.

5. The wear-resistant cavity of a novel airflow mill according to claim 1, characterized in that, The inner wall of the grinding disc (21) is provided with an air jet chamber (26). The inner wall of the mounting cavity (28) is provided with grinding nozzles (27) on one side of several air holes (510). One end of the grinding nozzle (27) is connected to the air jet chamber (26), and the other end of the grinding nozzle (27) is in contact with the sealing ring. A steam nozzle (25) is installed on the outer side of the grinding disc (21), and one end of the steam nozzle (25) is connected to the air jet chamber (26).

6. The wear-resistant cavity of a novel airflow mill according to claim 1, characterized in that, The feeding mechanism (4) includes a cover plate (41), and a discharge pipe (42) is inserted into the center of the cover plate (41). The bottom end of the discharge pipe (42) is inserted into the center of the upper end of the grinding chamber (51).

7. The wear-resistant cavity of a novel airflow mill according to claim 6, characterized in that, A feeding nozzle (43) is installed on one side of the upper end of the cover plate (41), and a feeding hopper (44) is installed on one side of the upper end of the feeding nozzle (43). A sealing ball head (45) is installed at the bottom end of the cover plate (41). The upper end of the sealing ball head (45) is connected to the bottom end of the feeding nozzle (43), and the bottom end of the sealing ball head (45) is engaged with the upper end of the connecting pipe (52).

8. The wear-resistant cavity of a novel airflow mill according to claim 7, characterized in that, The grinding disc (21) is fitted with several buckles (3) on its outer side, and the cover plate (41) is fitted with several retaining rings (6) on its outer side. The buckles (3) and retaining rings (6) are engaged with each other.

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