Impact mill

Abstract

The utility model discloses an impact mill, which belongs to the technical field of powder equipment and comprises a feeding pipe, a main machine shell, a main machine shaft, an impact disc, an air inlet volute, an air inlet, a lining plate, a grading wheel and a grader neck, the main machine shell is provided with a feeding port, the feeding pipe is connected with the feeding port, and the impact disc is arranged on the shaft end face of the main machine shaft. The air inlet volute is arranged in the center of the left end face of the main machine shell, the air inlet is formed in the outer circle of the air inlet volute, a shaft hole is formed in the axial center of the air inlet volute, the main machine shaft penetrates through the shaft hole and is arranged in the axial center of the air inlet volute, and the axial center line of the air inlet volute coincides with the axial center line of the main machine shaft. A circular seam is arranged between the inner wall of the air inlet volute and the outer circle of the main machine shaft, the lining plate is arranged on the left side of the inner circle of the main machine shell, the grading wheel is arranged on the right side of the inner circle of the main machine shell, and the grading machine neck is arranged on the right side of the grading wheel. According to the utility model, airflow entering from the air inlet is uniformly distributed in the main machine shell, so that the crushing efficiency is favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder equipment technical field, especially, relate to a impact mill. BACKGROUND

[0002] The existing impact mill's air inlet enters the inside of the main machine shell from the air inlet, and the air flow will drive the raw material particles to impact, shear and crush the high-speed rotating impact disc, but the air inlet of the existing impact mill is arranged on the upper part of the end face of the main machine shell, so that the air flow entering the air inlet is not uniformly distributed in the inside of the main machine shell, and the powder is accumulated at the lower part of the inside of the main machine shell, which is not conducive to improving the crushing efficiency.

[0003] Therefore, it is necessary to improve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of impact mill, to solve the air inlet of existing impact mill be arranged on the upper part of the end face of main machine shell, so that the air flow entering the air inlet is not uniformly distributed in the inside of the main machine shell, and the powder is accumulated at the lower part of the inside of the main machine shell, which is not conducive to improving the crushing efficiency technical problem.

[0005] The utility model provides an impact mill, including feeding pipe, main machine shell, main machine shaft, impact disc, the main machine shell is equipped with feed inlet, the feeding pipe is connected with feed inlet, the impact disc is arranged in the shaft end surface of main machine shaft, still include air inlet volute, air inlet, lining, grading wheel, grading machine neck, the air inlet volute is arranged in the left end face center of main machine shell, the air inlet is arranged on the outer circle of air inlet volute, the air inlet volute axial center is equipped with shaft hole, the main machine shaft passes through shaft hole and is arranged in the axial center of air inlet volute, the axial center line of air inlet volute and the axial center line of main machine shaft coincide, the ring gap between the inner wall of air inlet volute and the outer circle of main machine shaft is arranged, the lining is arranged in the left side of the inner circle of main machine shell, the grading wheel is arranged in the right side of the inner circle of main machine shell, and the grading machine neck is arranged in the right side of grading wheel.

[0006] Further, the impact mill further includes a damper, and the damper is arranged at the outer end of the air inlet.

[0007] Further, the air inlet is tangentially arranged on the outer circle of the air inlet volute.

[0008] Further, the axial center line of the main machine shaft coincides with the axial center line of the grading wheel.

[0009] Further, the feeding pipe is provided with a funnel-shaped feeding port on the left side.

[0010] Further, the main machine shell is arranged above the base.

[0011] Further, the circumferential edge of the impact disc is provided with impact hammers.

[0012] Further, the circumferential edge of the impact disc is provided with a plurality of groups of impact hammers.

[0013] The impact mill has the following beneficial effects:

[0014] The impact mill is additionally provided with an air inlet volute and a new air inlet structure, the air inlet is located at the center of the main shell, the air inlet volute is concentrically arranged with the main shaft, the airflow entering from the air inlet is evenly distributed in the main shell, the airflow timely carries away the crushed powder particles, there is no accumulation of powder at the lower part of the main shell, and the crushing efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Among them:

[0017] Figure 1 It is a left view structural schematic diagram of the impact mill;

[0018] Figure 2 It is a top view structural schematic diagram of the impact mill;

[0019] Figure 3 It is a main machine transverse section structural schematic diagram of the impact mill;

[0020] Figure 4 It is a left view structural schematic diagram of the air inlet volute;

[0021] Figure 5 It is a transverse section structural schematic diagram of the air inlet volute;

[0022] Reference signs:

[0023] 1 feeding pipe; 2 main shaft; 3 air door; 5 feeding port; 6 lining plate; 7 impact disc; 8 main shell; 9 grading wheel; 10 grading machine neck; 11 air inlet volute; 12 air inlet; 13 shaft hole. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be clearly and completely described below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The utility model will be further described in detail below in combination with the drawings.

[0026] The existing impact mill's air inlet enters the inside of the main machine shell from the air inlet, and the air flow will drive the powder particles to impact, shear and crush the high-speed rotating impact disc. However, the air inlet of the existing impact mill is arranged on the upper part of the end face of the main machine shell, so that the air flow entering the air inlet is not uniformly distributed in the inside of the main machine shell, and there is accumulated powder at the lower part of the inside of the main machine shell. This air inlet mode is not conducive to improving the crushing efficiency.

[0027] Referring to Figures 1 to 5As shown, the improved impact mill comprises a feeding pipe 1, a main machine shell 8, a main machine shaft 2, an impact disc 7, the main machine shell 8 is provided with a feeding port 5, the feeding pipe 1 is connected with the feeding port 5, the impact disc 7 is arranged at the shaft end surface of the main machine shaft 2, further comprises an air inlet volute 11, an air inlet 12, a lining plate 6, a grading wheel 9, a grading machine neck 10, the air inlet volute 11 is arranged at the center of the left end surface of the main machine shell 8, the air inlet 12 is arranged on the outer circle of the air inlet volute 11, the air inlet volute 11 is provided with a shaft hole 13 at the axial center, the main machine shaft 2 passes through the shaft hole 13 and is arranged at the axial center of the air inlet volute 11, the axial center line of the air inlet volute 11 coincides with the axial center line of the main machine shaft 2, the ring gap is arranged between the inner wall of the air inlet volute 11 and the outer circle of the main machine shaft 2, the lining plate 6 is arranged at the left side of the inner circle of the main machine shell 8, the grading wheel 9 is arranged at the right side of the inner circle of the main machine shell, and the grading machine neck 10 is arranged at the right side of the grading wheel 9. When working, the powder raw material particles enter the inside of the main machine shell from the feeding pipe and the feeding port under the driving of the airflow, the impact disc rotates at high speed, the airflow drives the powder particles to impact, shear and crush with the high-speed rotating impact disc and the stationary lining plate; the airflow entering from the air inlet and the air inlet volute enters the inside of the main machine shell through the ring gap between the inner wall of the air inlet volute and the outer circle of the main machine shaft, the crushed powder particles reach the periphery of the grading wheel under the driving of the airflow, the grading wheel rotates at high speed to generate centrifugal force, the fine powder particles have small centrifugal force and are taken into the inside of the grading wheel by the airflow and are discharged through the grading machine neck; the coarse particles are thrown to the inner wall of the main machine shell under the action of the centrifugal force of the grading wheel, due to the negative pressure generated by the high-speed rotation of the impact disc, the coarse particles enter the impact disc and the lining plate again under the joint action of the negative pressure and the airflow entering from the air inlet volute to impact and shear and crush, the crushed powder particles reach the periphery of the grading wheel again under the driving of the airflow to be classified, and the circulation is repeated. The positions and connection relationship of the air inlet volute, the main machine shaft, the main machine shell and the air inlet are favorable for the uniform distribution of the entering airflow in the main machine shell, because the air inlet volute and the new air inlet structure are added, the air inlet is located at the center of the main machine shell, the air inlet volute is arranged concentrically with the main machine shaft, the airflow entering from the air inlet is uniformly distributed in the main machine shell, there are equal airflow in the upper and lower parts of the inside of the main machine shell, the airflow takes away the crushed powder particles in time, there is no accumulation of the powder in the lower part of the inside of the main machine shell, and the crushing efficiency is improved.

[0028] In one embodiment, the impact mill further comprises a damper 3 arranged at the outer end of the air inlet 12, and the damper can adjust the air inlet size.

[0029] In one embodiment, the air inlet 12 is tangentially arranged on the outer circle of the air inlet volute 11, the tangential arrangement of the air inlet makes the air inlet more smooth, and the airflow after the air inlet has a rotating effect, the rotating airflow enhances the carrying effect on the powder particles, and further improves the crushing efficiency.

[0030] In one embodiment, the axial center line of the main shaft 2 coincides with the axial center line of the grading wheel 9, and the corresponding arrangement of the grading wheel with the main shaft is more conducive to uniform distribution of air flow.

[0031] In one embodiment, a funnel-shaped feeding port is arranged on the left side of the feeding pipe 1, which is conducive to the addition of raw materials.

[0032] In one embodiment, the main shell 8 is arranged above the base, as shown in the figure, and the base is conducive to the fixation of the impact mill to improve stability. Figure 3

[0033] In one embodiment, the impact hammer is arranged on the circumferential edge of the impact disc 7, which is conducive to increasing the linear velocity of the impact hammer.

[0034] In one embodiment, the impact disc 7 is provided with a plurality of groups of impact hammers, which can enhance the crushing effect.

[0035] In addition, power equipment such as motors can provide power for rotating parts such as the main shaft and the grading wheel.

[0036] In the description of the embodiments of the utility model, it should be explained that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0038] ​In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the present application, the description of the terms "one embodiment", "an embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0040] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical scheme of the present application, and not to limit it; the above embodiments are only used to help understand the method of the present application and its core idea, for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An impact mill comprising a feeding pipe, a main machine shell, a main machine shaft, an impact disc, the main machine shell being provided with a feeding port, the feeding pipe being connected with the feeding port, and the impact disc being arranged at the shaft end surface of the main machine shaft, characterized in that, The impact mill further comprises an air inlet volute, an air inlet, a lining plate, a grading wheel, and a grading machine neck.

2. An impact mill according to claim 1, characterized in that The impact mill further comprises a damper, which is arranged at the outer end of the air inlet.

3. An impact mill according to claim 1, characterized in that The air inlet is tangentially arranged on the outer circle of the air inlet volute.

4. An impact mill according to claim 1, characterized in that The axial center line of the main shaft coincides with the axial center line of the grading wheel.

5. An impact mill according to claim 1, characterized in that The left side of the feeding pipe is provided with a funnel-shaped feeding port.

6. An impact mill according to claim 1, characterized in that The main machine shell is arranged above the base.

7. An impact mill according to claim 1, characterized in that The circumferential edge of the impact disc is provided with impact hammer heads.

8. An impact mill according to claim 7, characterized in that The circumferential edge of the impact disc is provided with multiple groups of impact hammer heads.

Images