Noise reduction device for planetary ball mill

Abstract

The utility model belongs to the technical field of ball mills, and particularly relates to a noise reduction device for a planetary ball mill, which comprises an annular base, a detachably connected noise reduction sleeve is arranged on the base, a top cover is arranged at the top of the noise reduction sleeve, a first cooling coil is arranged at the bottom of the top cover, and an annular cooling cavity is arranged on the inner wall of the noise reduction sleeve. A spiral second cooling coil is arranged in the cooling cavity, a heat exchange frame is arranged on the outer wall of the noise reduction sleeve, a heat exchange coil connected with the first cooling coil and the second cooling coil in series is arranged on the heat exchange frame, a pump set is arranged at the bottom of the heat exchange coil, and a heat exchange fan is arranged on the outer side of the heat exchange coil. Compared with the prior art, the noise reduction device effectively solves the problems of noise pollution and overheating caused by long-time operation of the planetary ball mill by integrating a noise reduction system and an efficient heat dissipation system, improves the grinding efficiency and the equipment stability, and realizes double optimization of noise reduction and heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ball mill, especially relate to a noise reduction device for planetary ball mill. BACKGROUND

[0002] In the field of material science and technology, as a kind of efficient, multifunctional experimental and production equipment, planetary ball mill is widely used in scientific research and industrial production, especially in the key links such as mixing, fine grinding, small sample preparation, nanometer material dispersion and new product research and development, plays an irreplaceable role. However, with its wide application, planetary ball mill produces huge mechanical noise due to high-speed impact and grinding between grinding balls when working, which not only seriously disturbs the tranquility of experimental environment, but also causes adverse effects on the physical and mental health and work efficiency of operators.

[0003] In order to reduce the noise of ball mill, a double noise reduction device for planetary ball mill has appeared in the market, which covers the turntable and the ball mill tank by adopting sleeve structure, and effectively reduces the noise propagation by physical isolation. This design alleviates the noise pollution problem to some extent, but its side effects cannot be ignored. In the long-term continuous running state, a large amount of heat energy is generated between the material in the ball mill tank and the tank wall and the grinding ball due to frequent friction, and the closed sleeve structure limits the effective dissipation of heat, resulting in rapid rise of temperature inside the sleeve. This not only aggravates the thermal stress of the material and the ball mill tank, promotes the phenomenon of material adhesion to the tank wall, reduces the grinding efficiency and material quality, but also may cause equipment failure due to overheating, shortens the service life of the equipment, increases the maintenance cost and safety risk.

[0004] Therefore, there is a certain market demand for designing a new type of noise reduction device for planetary ball mill. SUMMARY

[0005] In view of the above problems of the prior art, the utility model provides a noise reduction device for planetary ball mill.

[0006] The noise reduction device for planetary ball mill of the utility model, including annular base, be provided with the detachable connection's noise reduction sleeve on the base, the top of noise reduction sleeve is provided with top cover, the bottom of top cover is provided with first cooling coil pipe, the inner wall of noise reduction sleeve is provided with annular cooling cavity, be provided with helical second cooling coil pipe in cooling cavity, be provided with heat exchange rack on the outer wall of noise reduction sleeve, be provided with the heat exchange coil pipe of first cooling coil pipe and second cooling coil pipe in series on heat exchange rack, the bottom of heat exchange coil pipe is provided with pump group, the outside of heat exchange coil pipe is provided with heat exchange fan.

[0007] Further, the top cover of the noise reduction sleeve is provided with a buffer cavity, the bottom of the top cover is provided with a plurality of first-stage heat dissipation and noise reduction holes communicating with the buffer cavity, the top of the top cover is provided with a plurality of second-stage heat dissipation and noise reduction holes communicating with the buffer cavity, and each of the second-stage heat dissipation and noise reduction holes is arranged in a staggered manner with the first-stage heat dissipation and noise reduction hole.

[0008] Further, the first-stage heat dissipation and noise reduction hole and the second-stage heat dissipation and noise reduction hole are both stepped holes, and the bottom end of the stepped hole is larger than the top end.

[0009] Further, the cooling cavity is provided with a refraction grid plate layer outside the second cooling coil.

[0010] Further, the base is provided with an annular step, an outer threaded joint is fixedly arranged on the annular step, an inner threaded joint matched with the outer threaded joint is fixedly arranged on the bottom of the noise reduction sleeve, and the outer circle of the annular step is provided with a rubber gasket matched with the bottom end of the noise reduction sleeve.

[0011] Further, the inner wall of the noise reduction sleeve is provided with a row of arc-shaped flow guide plates in an axial rotation array.

[0012] Further, both sides of the top of the noise reduction sleeve are provided with operation handles.

[0013] Further, the noise reduction sleeve is sound-absorbing cotton.

[0014] Compared with the prior art, the noise reduction device effectively solves the problems of noise pollution of the planetary ball mill and overheating caused by long-time operation by integrating the noise reduction and high-efficiency heat dissipation systems, improves the grinding efficiency and equipment stability, guarantees the health and work efficiency of the operators, and realizes the double optimization of noise reduction and heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 It is Figure 1 It is an enlarged view of the middle local detail A;

[0017] Figure 3 It is a top view of the utility model;

[0018] Figure 4 It is a top view of the noise reduction sleeve of the utility model after installation;

[0019] Figure 5 It is a rear view of the utility model.

[0020] In the figure: 1, base; 2, noise reduction sleeve; 3, top cover; 4, first cooling coil; 5, cooling cavity; 6, second cooling coil; 7, heat exchange frame; 8, heat exchange coil; 9, pump group; 10, heat exchange fan; 11, buffer cavity; 12, first-stage heat dissipation and noise reduction hole; 13, second-stage heat dissipation and noise reduction hole; 14, refraction grating layer; 15, external threaded joint; 16, internal threaded joint; 17, rubber gasket; 18, guide plate; 19, operating handle; 20, rotating disc; 21, grinding pot. DETAILED DESCRIPTION

[0021] In order to better understand the present application, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figures 1 to 5

[0022] It should be noted that the "front, rear, left, right, upper and lower" directions described in the text are based on the "front, rear, left, right, upper and lower" directions in the figure. Figure 1

[0023] Referring to Figures 1 to 5 , the noise reduction device for the planetary ball mill comprises an annular base 1, which serves as the basic support part of the entire noise reduction device and ensures the stability of the device. A detachably connected noise reduction sleeve 2 is arranged on the base 1, which facilitates cleaning and maintenance. The noise reduction sleeve 2 is made of sound-absorbing cotton material to maximize the absorption and isolation of the noise generated during the ball milling process.

[0024] A one-piece top cover 3 is arranged at the top of the noise reduction sleeve 2, and the bottom of the top cover 3 is provided with first cooling coils 4, which can take away part of the heat through circulating cooling medium (such as water or coolant). At the same time, an annular cooling cavity 5 is arranged on the inner wall of the noise reduction sleeve 2, and a spiral-shaped second cooling coil 6 is arranged in the cavity, which further enhances the heat absorption capacity.

[0025] As shown in Figure 3 and Figure 5 , in order to effectively dissipate the absorbed heat, the present application is provided with a heat exchange frame 7 on the outer wall of the noise reduction sleeve 2, and a heat exchange coil 8 is arranged on the heat exchange frame 7. The heat exchange coil 8 ingeniously connects the first cooling coil 4 and the second cooling coil 6 to form a closed-loop cooling circulation system. At the bottom of the heat exchange coil 8, a pump group 9 is arranged to drive the circulating flow of the cooling medium. In addition, in order to accelerate the heat exchange efficiency, a heat exchange fan 10 is additionally arranged on the outside of the heat exchange coil 8 to improve the heat dissipation effect through forced convection.

[0026] As shown in Figure 1 and Figure 2 ​​As shown in the middle, the top cover 3 is internally designed with a buffer cavity 11 to buffer and disperse noise. The bottom and top of the buffer cavity 11 are respectively provided with a plurality of first heat dissipation and noise reduction holes 12 and second heat dissipation and noise reduction holes 13, which are arranged up and down staggered, forming a labyrinth channel, which can effectively block the direct propagation of noise and promote air flow to help heat dissipation. In particular, the first heat dissipation and noise reduction holes 12 and the second heat dissipation and noise reduction holes 13 are designed as stepped holes, the bottom diameter is larger than the top, which is beneficial to smooth airflow and reduces noise reflection.

[0027] In order to further improve the noise reduction effect, the present application is provided with a refraction grid layer 14 outside the second cooling coil 6 in the cooling cavity 5. The refraction grid layer 14 can change the propagation direction of sound waves, increase the reflection times of sound waves in the noise reduction sleeve 2, thereby significantly reducing the transmittance of noise.

[0028] As shown in Figure 1 and Figure 4 The inner wall of the noise reduction sleeve 2 is provided with a circle of arc-shaped flow guide plates 18 in the axial rotation array. The design of these flow guide plates 18 aims to optimize the air flow inside the noise reduction device, to a certain extent, to change the propagation path of sound waves, to reduce the transmittance of noise by increasing the reflection times and path length of sound waves in the noise reduction sleeve 2.

[0029] The base 1 is provided with an annular step, and the outer threaded joint 15 is fixedly sleeved on the step, and the bottom of the noise reduction sleeve 2 is fixedly provided with the inner threaded joint 16 matched with the outer threaded joint 15. This threaded connection is not only firm and reliable, but also facilitates quick installation and disassembly. In addition, the outer circle of the annular step is provided with a rubber gasket 17 matched with the bottom end of the noise reduction sleeve 2.

[0030] The top of the noise reduction sleeve 2 is provided with an operating handle 19 on both sides, which facilitates the staff to easily move or adjust the noise reduction device when needed.

[0031] The use mode and principle of the present application:

[0032] First, the base 1 is sleeved outside the ball mill rotating disc 20 and fixed on the workbench of the ball mill. After the ball mill tank with materials is fixed, the noise reduction sleeve 2 is screwed with the base 1. Then, the pump group 9 and the heat exchange fan 10 of the noise reduction device are started at the same time to ensure the normal operation of the cooling system. Next, the grinding work of the ball mill is started, and the noise reduction device effectively isolates the noise and prevents heat accumulation through the cooling system. Finally, after the ball mill stops running, the noise reduction sleeve 2 is separated, the ball mill tank is taken out, and the grinding operation is completed.

[0033] In the description of the utility model, need understanding is, the orientation or position relation that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" indicate is based on the orientation or position relation shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element that is indicated must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the restriction of the utility model. In the description of the utility model, unless otherwise specified and limited, need to be explained, the terms "mount", "connect", "connect" should be understood broadly, for example, can be mechanical connection or electrical connection, also can be the communication of two elements inside, can be directly connected, also can be indirectly connected through intermediate medium, for the ordinary skill of the person of the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A noise reduction device for a planetary ball mill, characterized by: The application relates to a noise reduction sleeve, which comprises a ring-shaped base (1) provided with a detachably connected noise reduction sleeve (2), the top of the noise reduction sleeve (2) is provided with a top cover (3), the bottom of the top cover (3) is provided with a first cooling coil (4), the inner wall of the noise reduction sleeve (2) is provided with a ring-shaped cooling cavity (5), the cooling cavity (5) is provided with a spiral-shaped second cooling coil (6), the outer wall of the noise reduction sleeve (2) is provided with a heat exchange frame (7), the heat exchange frame (7) is provided with heat exchange coils (8) connected in series with the first cooling coil (4) and the second cooling coil (6), the bottom of the heat exchange coil (8) is provided with a pump group (9), and the outer side of the heat exchange coil (8) is provided with a heat exchange fan (10).

2. A noise reduction device for a planetary ball mill as claimed in claim 1, characterized in that: The top cover (3) of the noise reduction sleeve (2) is provided with a buffer cavity (11), the bottom of the top cover (3) is provided with a plurality of primary sound reduction holes (12) communicating with the buffer cavity (11), the top of the top cover (3) is provided with a plurality of secondary sound reduction holes (13) communicating with the buffer cavity (11), and each of the secondary sound reduction holes (13) and the primary sound reduction holes (12) is arranged in an up-down staggered mode.

3. A noise reduction device for a planetary ball mill as claimed in claim 2, characterised in that: The primary sound reduction holes (12) and the secondary sound reduction holes (13) are both stepped holes, and the bottom end of the stepped hole is larger than the top end.

4. A noise reduction device for a planetary ball mill as claimed in claim 1, characterized in that: The cooling cavity (5) is provided with a refraction grid plate layer (14) outside the second cooling coil (6).

5. A noise reduction device for a planetary ball mill as claimed in claim 1, characterized in that: The base (1) is provided with a ring-shaped step, the ring-shaped step is fixedly provided with an outer thread joint (15), the bottom of the noise reduction sleeve (2) is fixedly provided with an inner thread joint (16) matched with the outer thread joint (15), and the outer circle of the ring-shaped step is provided with a rubber gasket (17) matched with the bottom end of the noise reduction sleeve (2).

6. A noise reduction device for a planetary ball mill as defined in claim 1, characterized in that: The inner wall of the noise reduction sleeve (2) is provided with a row of arc-shaped guide plates (18) in an axial rotation array.

7. A noise reduction device for a planetary ball mill as defined in claim 1, characterized in that: Both sides of the top of the noise reduction sleeve (2) are provided with operation handles (19).

8. A noise reduction device for a planetary ball mill as defined in claim 1, characterized in that: The noise reduction sleeve (2) is sound-absorbing cotton.

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