High-energy jet mill shell

Abstract

The utility model discloses a high-energy jet mill shell which comprises an outer shell, a crushing cavity is arranged in the outer shell, a plurality of jet nozzles are arranged on the inner wall of the crushing cavity, the crushing cavity comprises a disc-shaped cavity, the axis of the disc-shaped cavity extends transversely, and the jet nozzles are arranged on the annular cavity wall of the disc-shaped cavity. In every two adjacent airflow nozzles, the airflow nozzle located on the upstream and the airflow nozzle located on the downstream are staggered, a grading wheel is rotationally installed in the disc-shaped cavity, all the airflow nozzles spray airflow in the clockwise direction or in the anticlockwise direction, and the rotating axis of the grading wheel coincides with the axis of the disc-shaped cavity. Compressed air forms supersonic airflow through the airflow nozzles to carry the materials to collide with the inner wall of the crushing cavity, the materials are impacted and crushed, the impacted and crushed materials rotate around the inner wall of the crushing cavity, and material particles are mutually ground and crushed under the high-speed effect in the rotating process. Every two adjacent airflow nozzles are arranged in a staggered mode, so that each airflow nozzle can exert the maximum effect, and the crushing capacity of equipment is improved.

Description

Technical Field

[0001] The utility model relates to a shell of an air flow mill. Background Art

[0002] Most of the existing air flow mills use compressed air to form a supersonic air flow through a nozzle to carry materials to collide with each other for crushing, and the functions are single, most of them only have a crushing function, and cannot screen the crushed materials according to the particle size, and most of them increase the service life by replacing easily worn parts. For example, CN 216910545U discloses a low-noise, high-efficiency and energy-saving air flow mill for pesticide crushing, including: a main body module, a baffle module and a shock-absorbing module, and the baffle module includes sound insulation cotton arranged on the inner side wall of the main body module and a wear-resistant plate arranged on the inner wall of the sound insulation cotton. By arranging wear-resistant plates in an annular array on the inner wall of the side plate and adopting a modular arrangement, a T-shaped protrusion is arranged at one end of the wear-resistant plate, and a T-shaped groove is arranged at the other end of the wear-resistant plate, so that the two can be interlocked and connected into a whole, avoiding the need to replace the entire wear-resistant plate when the wear-resistant plate is damaged, and only the damaged wear-resistant plate needs to be replaced separately, saving costs and increasing practicality. By setting the sound insulation cotton between the wear plate and the side plate, the sound of the pesticide particles hitting the wear plate during crushing is effectively reduced. At the same time, a buffer component is set at the bottom of the bottom plate, and the vibration of the airflow mill is reduced by the spring to avoid the noise caused by collision with the base. At the same time, the sponge cushion layer is symmetrically set in the buffer component to further reduce the collision noise, improve the sound insulation performance of the airflow mill during operation, and reduce the harm of the airflow mill noise to the staff. It only realizes the crushing function, and reduces the cost and prolongs the service life by replacing the damaged wear plate alone. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a high-energy air flow mill shell which prolongs the service life of the equipment, is easy to maintain and improves the crushing efficiency.

[0004] The technical solution of the utility model is: a high-energy air flow mill shell, comprising an outer shell, a pulverizing chamber is arranged in the outer shell, a plurality of air flow nozzles are installed on the inner wall of the pulverizing chamber, the pulverizing chamber comprises a disc-shaped chamber, the axis of the disc-shaped chamber extends laterally, the air flow nozzles are arranged on the annular chamber wall of the disc-shaped chamber, the air flow nozzle located upstream and the air flow nozzle located downstream of two adjacent air flow nozzles are staggered with each other, a classifying wheel is rotatably installed in the disc-shaped chamber, each of the air flow nozzles sprays air flow in a clockwise direction or counterclockwise direction, and the rotation axis of the classifying wheel coincides with the axis of the disc-shaped chamber.

[0005] As a preferred technical solution, the pulverizing chamber includes a truncated cone-shaped chamber located on the left side of the disc-shaped chamber, and the axes of the truncated cone-shaped chamber and the disc-shaped chamber coincide with each other.

[0006] As a preferred technical solution, one of the two adjacent airflow nozzles is on a first circular line, and the other is on a second circular line, and the axis of the first circular line and the axis of the second circular line coincide.

[0007] As a preferred technical solution, the first annular line is adjacent to the truncated cone-shaped cavity, and part of the airflow ejected from the airflow nozzle on the first annular line enters the pulverizing cavity on the left side of the side surface of the left disk of the classifying wheel.

[0008] As a preferred technical solution, a discharge port is provided on the first cavity wall of the crushing cavity, a grading discharge port is provided at the discharge end of the grading wheel, the grading discharge port and the discharge port are connected to each other, and a sealing mechanism surrounding the discharge port is provided between the discharge end and the first cavity wall.

[0009] As a preferred technical solution, the outer shell includes an outer shell and an inner liner target ring located in the outer shell, the outer shell includes a left shell, a right shell and an intermediate shell located between the left shell and the right shell, the left side of the inner liner target ring is provided with a left opening, the right side of the inner liner target ring is provided with a right opening, the disc-shaped cavity and the truncated cone-shaped cavity are both located in the inner liner target ring, the inner liner target ring and the right shell and the left shell of the outer shell form the crushing cavity, the inner wall of the right shell corresponding to the right opening is used as the first cavity wall, the left opening is sleeved outside the rotating shaft of the grading wheel and a left sealing mechanism is provided between the left opening and the left shell.

[0010] As a preferred technical solution, the inner surface of the right shell has a truncated cone, the liner target ring has a sealing groove that matches the truncated cone, and a sealing ring is provided between the small end surface of the truncated cone and the sealing groove.

[0011] As a preferred technical solution, the right shell is hinged to the middle shell.

[0012] As a preferred technical solution, a discharge port is provided at the bottom of the disc-shaped cavity, and a discharge port plug is detachably mounted on the discharge port.

[0013] Due to the adoption of the above technical solution, a high-energy airflow mill shell includes an outer shell, a crushing chamber is arranged in the outer shell, a plurality of airflow nozzles are installed on the inner wall of the crushing chamber, the crushing chamber includes a disc-shaped chamber, the axis of the disc-shaped chamber extends horizontally, the airflow nozzle is arranged on the annular chamber wall of the disc-shaped chamber, the airflow nozzle located upstream and the airflow nozzle located downstream of two adjacent airflow nozzles are staggered, a classifying wheel is rotatably installed in the disc-shaped chamber, each of the airflow nozzles ejects airflow in a clockwise direction or counterclockwise direction, and the rotation axis of the classifying wheel coincides with the axis of the disc-shaped chamber. Compressed air passes through the airflow nozzle to form a supersonic airflow to carry the material and hit the inner wall of the crushing chamber, the material is impacted and crushed, and the material after impact and crushing rotates around the inner wall of the crushing chamber, and the material particles are still grinding and crushing each other under the action of high speed during rotation. The crushed material that meets the particle size requirement passes through the classifying wheel and is sucked away by negative pressure, and the material that does not meet the particle size requirement remains in the crushing chamber and continues to be crushed. In order to prevent the two adjacent airflow nozzles from interfering with each other during the spraying operation and ensure that the material is repeatedly impacted, ground and crushed on the wall of the crushing chamber, the two adjacent airflow nozzles are arranged in a staggered manner so that each airflow nozzle can play its maximum effect and improve the crushing capacity of the equipment. The equipment adopts the principle of supersonic airflow targeted crushing. In order to increase the service life of the liner target ring, a disc-shaped cavity is set. The supersonic airflow pushes the material to hit the liner target ring. The crushed material rotates rapidly around the liner target ring under the action of the tangential force and enters the targeted airflow of another airflow nozzle. In this design, the material is repeatedly pushed and impacted by the airflow, reducing the wear on the liner target ring and increasing the service life of the liner target ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0015] Figure 2 yes Figure 1 Side view of

[0016] Figure 3 yes Figure 2 A partial enlarged view of point I in the middle;

[0017] Figure 4 yes Figure 3 A partial enlarged view of position II in the middle;

[0018] Figure 5 It is a schematic diagram of the structure of the inner liner target ring in the embodiment of the utility model;

[0019] Figure 6 is a cross-sectional view of a grading wheel in an embodiment of the utility model;

[0020] Figure 7 is a cross-sectional view of the right side housing in an embodiment of the utility model;

[0021] Figure 8 It is a schematic diagram of the working principle of an embodiment of the utility model. DETAILED DESCRIPTION

[0022] like Figure 1 , Figure 2 , Figure 6 As shown, a high-energy airflow mill shell includes an outer shell 1, wherein a pulverizing chamber is provided in the outer shell 1, and a plurality of airflow nozzles 3 are installed on the inner wall of the pulverizing chamber. The pulverizing chamber includes a disc-shaped chamber 5, and the axis of the disc-shaped chamber 5 extends laterally. The airflow nozzles 3 are arranged on the annular chamber wall of the disc-shaped chamber, and the airflow nozzles 3 located upstream and the airflow nozzles located downstream of two adjacent airflow nozzles 3 are staggered with each other. A classifying wheel 4 is rotatably installed in the disc-shaped chamber 5, and each of the airflow nozzles 3 ejects airflow in a clockwise direction or counterclockwise direction, and the rotation axis of the classifying wheel 4 coincides with the axis of the disc-shaped chamber 5. Figure 8 As shown, compressed air passes through the airflow nozzle 3 to form a supersonic airflow that carries the material and hits the inner wall of the crushing chamber, impacting and crushing the material. The crushed material rotates around the inner wall of the crushing chamber, and the material particles are grinding and crushing each other under high speed during rotation. The crushed material that meets the particle size requirements passes through the grading wheel 4 and is sucked away by negative pressure, while the material that does not meet the particle size requirements remains in the crushing chamber and continues to be crushed. With a disc-shaped cavity design, the supersonic airflow pushes the material to hit the crushing chamber. The crushed material rotates rapidly around the crushing chamber under the action of tangential force and enters the targeted airflow of another nozzle. In this design, the material is repeatedly pushed and hit by the airflow to reduce the wear on the crushing chamber and increase the service life of the crushing chamber.

[0023] like Figure 3 and Figure 4 As shown, the pulverizing chamber includes a truncated cone-shaped chamber 2 located on the left side of the disc-shaped chamber 5, the axes of the truncated cone-shaped chamber 2 and the disc-shaped chamber 5 coincide, and the large end of the truncated cone-shaped chamber is adjacent to the disc-shaped chamber. One of the two adjacent airflow nozzles 4 is on the first annular line 6, and the other is on the second annular line 7, and the axes of the first annular line 6 and the second annular line 7 coincide. The first annular line 6 is adjacent to the truncated cone-shaped chamber 2, and part of the airflow ejected from the airflow nozzle 3 on the first annular line 6 enters the pulverizing chamber on the left side of the side surface of the left disk body 8 of the classifying wheel 4. The setting of the truncated cone-shaped chamber enables the pulverizing chamber to accommodate more materials, and at the same time, the truncated cone-shaped chamber cooperates with the side surface of the left disk body 8, and part of the airflow ejected from the airflow nozzle 3 on the first annular line 6 enters the pulverizing chamber on the left side of the side surface of the left disk body 8 of the classifying wheel 4, so that the materials in the truncated cone-shaped chamber can efficiently move to the disc-shaped chamber 5, avoiding the accumulation of materials in the truncated cone-shaped chamber 2 and improving the pulverizing efficiency.

[0024] like Figures 2 to 6As shown, a discharge port 10 is provided on the first chamber wall 9 of the crushing chamber, a grading discharge port 11 is provided at the discharge end of the grading wheel 4, the grading discharge port 11 and the discharge port 10 are connected to each other, and a sealing mechanism surrounding the discharge port 10 is provided between the discharge end and the first chamber wall 9.

[0025] like Figure 6 As shown, the grading wheel 4 includes a left disc body 8 and a right disc body 12, a grading fin 13 is provided between the left disc body 8 and the right disc body 12, the grading discharge port 11 is provided on the right disc body 12, and the sealing mechanism is provided between the right disc body 12 and the first cavity wall 9.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the shell 1 includes an outer shell and an inner liner target ring 13 located in the outer shell, the outer shell includes a left shell 14, a right shell 15 and an intermediate shell 16 located between the left shell 14 and the right shell 15, the left side of the inner liner target ring 13 is provided with a left opening 17, the right side of the inner liner target ring 13 is provided with a right opening 18, the disc-shaped cavity 5 and the truncated cone-shaped cavity 2 are both located in the inner liner target ring 13, the inner liner target ring 13 and the right shell 15 and the left shell 14 of the outer shell form the crushing chamber, the inner wall of the right shell 15 corresponding to the right opening 18 is used as the first chamber wall 9, the left opening 17 is sleeved outside the rotating shaft 19 of the classifying wheel and a left sealing mechanism is provided between the left opening 17 and the left shell. The left sealing mechanism includes a left sealing ring 20 arranged between the end faces of the left shell 14 and the left opening 17. The setting of the sealing mechanism ensures that the material in the crushing chamber cannot escape and ensures the crushing effect. The equipment adopts the principle of supersonic airflow targeted crushing. In order to increase the service life of the liner target ring, a disc-shaped cavity is set. The supersonic airflow pushes the material to collide with the liner target ring. The crushed material rotates rapidly around the liner target ring under the action of tangential force and enters the targeted airflow of another airflow nozzle. In this way, the material is repeatedly pushed and hit by the airflow, which reduces the wear on the liner target ring and increases the service life of the liner target ring.

[0027] like Figures 3 to 7 As shown, the inner surface of the right housing 15 has a truncated cone 21, the liner target ring 13 has a sealing groove 22 that matches the truncated cone 21, and a sealing ring 23 is provided between the small end surface of the truncated cone 21 and the sealing groove 22. The cooperation between the truncated cone and the sealing groove 22 improves the sealing performance.

[0028] The right side housing 15 is hinged on the middle housing 16, which reduces the maintenance difficulty of the equipment.

[0029] like Figure 2As shown, a discharge port 24 is provided at the bottom of the disc-shaped cavity 5, and a discharge port plug is detachably mounted on the discharge port 24. The design of the discharge port 24 makes it more convenient to clean the equipment and can effectively prevent materials from contaminating each other.

[0030] like Figure 3 , Figure 3 and Figure 4 As shown, the sealing mechanism includes an annular groove 26 opened in the first cavity wall, the annular groove 26 surrounds the discharge port 10, a gas sealing ring 27 is fixedly installed in the annular groove 26, a labyrinth sealing structure is provided between the gas sealing ring 27 and the right disk body 12, and the gas sealing ring 27 is also provided with a vent 28 interconnected with the gap between the gas sealing ring 27 and the right disk body 12, and the vent 28 is connected to an air inlet pipe 29. The airflow entering the air inlet pipe 29 enters the gap between the gas sealing ring 27 and the right disk body 12 through the vent 28 and is blown out, thereby preventing the material from entering the above-mentioned gap 30 and improving the sealing efficiency.

[0031] The labyrinth seal structure includes a seal ring 31 disposed on a side surface of the air seal ring 27 adjacent to the right disk body 12, an annular protrusion 32 disposed on the seal ring 31, the annular protrusion 32 being located between the outer peripheral surface of the right disk body 12 and the hole wall of the right opening 18, and a groove matching the seal ring 31 is disposed on the right disk body 12. The classifying wheel 4 rotates relative to the annular protrusion 32, and the annular protrusion 32 is located between the outer peripheral surface of the right disk body 12 and the hole wall of the right opening, so that the airflow entering the gap 30 between the air seal ring 27 and the right disk body 12 from the vent hole can be blown toward the inside of the pulverizing chamber, further blocking the entry of materials in the pulverizing chamber.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Without departing from the spirit and scope of the utility model, the utility model may also have various changes and improvements.

[0033] These changes and improvements all fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high energy jet mill housing, characterized in that: It comprises an outer shell, wherein a pulverizing chamber is arranged in the outer shell, and a plurality of air flow nozzles are installed on the inner wall of the pulverizing chamber, wherein the pulverizing chamber comprises a disc-shaped chamber, the axis of the disc-shaped chamber extends laterally, and the air flow nozzles are arranged on the annular chamber wall of the disc-shaped chamber, and the air flow nozzle located upstream and the air flow nozzle located downstream of two adjacent air flow nozzles are staggered with each other, and a classifying wheel is rotatably installed in the disc-shaped chamber, and each of the air flow nozzles ejects air flow in a clockwise direction or a counterclockwise direction, and the rotation axis of the classifying wheel coincides with the axis of the disc-shaped chamber.

2. The high energy jet mill housing according to claim 1, characterized in that: The pulverizing chamber comprises a truncated cone-shaped chamber located on the left side of the disc-shaped chamber, and the axes of the truncated cone-shaped chamber and the disc-shaped chamber coincide with each other.

3. The high energy jet mill housing according to claim 2, characterized in that: One of the two adjacent airflow nozzles is on a first circular line, and the other is on a second circular line, and the axis of the first circular line and the axis of the second circular line coincide.

4. The high energy jet mill housing according to claim 3, characterized in that: The first annular line is adjacent to the truncated cone-shaped cavity, and part of the airflow sprayed from the airflow nozzle on the first annular line enters the pulverizing cavity on the left side of the side surface of the left disk body of the classifying wheel.

5. The high energy jet mill housing according to claim 1, characterized in that: A discharge port is provided on the first cavity wall of the pulverizing cavity, a grading discharge port is provided at the discharge end of the grading wheel, the grading discharge port and the discharge port are connected to each other, and a sealing mechanism surrounding the discharge port is provided between the discharge end and the first cavity wall.

6. The high energy jet mill housing according to claim 5, characterized in that: The outer shell includes an outer shell and an inner liner target ring located in the outer shell, the outer shell includes a left shell, a right shell and an intermediate shell located between the left shell and the right shell, the left side of the inner liner target ring is provided with a left opening, the right side of the inner liner target ring is provided with a right opening, the disc-shaped cavity and the truncated cone-shaped cavity are both located in the inner liner target ring, the inner liner target ring and the right shell and the left shell of the outer shell form the crushing cavity, the inner wall of the right shell corresponding to the right opening is used as the first cavity wall, the left opening is sleeved outside the rotating shaft of the grading wheel and a left sealing mechanism is provided between the left opening and the left shell.

7. The high energy jet mill housing according to claim 6, characterized in that: The inner surface of the right shell body has a truncated cone, the liner target ring has a sealing groove matched with the truncated cone, and a sealing ring is provided between the small end surface of the truncated cone and the sealing groove.

8. The high energy jet mill housing according to claim 7, characterized in that: The right housing is hinged to the middle housing.

9. The high energy jet mill housing according to claim 1, characterized in that: A discharge port is provided at the bottom of the disc-shaped cavity, and a discharge port plug is detachably mounted on the discharge port.

10. The high energy jet mill housing according to claim 5, characterized in that: The sealing mechanism includes an annular groove opened on the first cavity wall, the annular groove surrounds the discharge port, an air sealing ring is fixedly installed in the annular groove, a labyrinth sealing structure is provided between the air sealing ring and the right disk body, and the air sealing ring is also provided with an air vent that is interconnected with the gap between the air sealing ring and the right disk body, and the air vent is connected to an air inlet pipe.

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