Noise reduction type cement ball milling test mill

Abstract

The utility model provides a noise reduction type cement ball milling test small mill. The noise reduction type cement ball milling test small mill comprises a mill, a mill support for bearing the mill, a housing, a housing support for bearing the housing, and a base for bearing the mill support and the housing support, the mill comprises a barrel and a driving mechanism for driving the barrel to rotate; a mill cover is arranged on the cylinder body; the housing covers the outer side of the barrel, a cover cap is arranged at the upper end of the housing, and a discharge port is formed in the lower end; the cover shell comprises a shell body and a noise reduction assembly arranged on the inner wall of the shell body, the noise reduction assembly comprises a sound absorption layer, a sound wave vibration conversion part, a vibration absorption damping part and a sound absorption and insulation plate which are arranged in sequence, and the sound absorption and insulation plate is attached to the inner wall of the shell body; a rubber pad is arranged at the bottom of the base. The noise reduction type small mill for the cement ball milling test can effectively reduce the intensity of noise generated in the grinding process.

Description

Technical Field

[0001] The utility model belongs to the field of cement test equipment, and particularly relates to a noise-reducing small cement ball mill for test. Background Art

[0002] The small cement ball mill for test is a small ball mill used for grinding cement clinker, and it plays an important role in determining the physical strength and chemical experiments of cement clinker. During the working process of the small cement ball mill for test, materials such as cement clinker particles, gypsum and grinding media (such as steel balls) are loaded into the cylinder body of the mill. The materials are impacted and ground by the grinding media in the mill and gradually crushed into the required fineness. During the impact and grinding process of the metal ball media, a large amount of noise will be generated, seriously affecting the occupational health of the operator. Therefore, how to reduce the noise during the grinding process is a technical problem that needs to be solved urgently. Content of the Utility Model

[0003] In view of this, to solve the above technical problems, the utility model provides a noise-reducing small cement ball mill for test, which can effectively reduce the noise intensity generated during the grinding process through a reasonable structural design.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A noise-reducing small cement ball mill for test, comprising:

[0006] A mill, the mill includes a cylinder body and a driving mechanism for driving the cylinder body to rotate; a mill cover is provided on the cylinder body;

[0007] A mill support for carrying the mill;

[0008] A housing, the housing covers the outside of the cylinder body, the upper end of the housing is provided with a cover and the lower end is provided with a discharge port; the housing includes a shell body and a noise reduction component provided on the inner wall of the shell body. The noise reduction component includes a sound absorption layer, a sound wave vibration conversion member, a vibration absorption damping member, and a sound absorption and sound insulation board arranged in sequence, and the sound absorption and sound insulation board is attached to the inner wall of the shell body;

[0009] A housing support for carrying the housing;

[0010] A base, both the mill support and the housing support are arranged on the base, and a rubber cushion plate is provided at the bottom of the base to play a role in vibration reduction and noise reduction.

[0011] After the cover and the mill cover are opened, cement clinker particles, gypsum and other materials and metal ball media are put into the cylinder body; there are generally two types of mill covers, one is a sealed type and the other is a grate type. The sealed type is used during the grinding process. Close the sealed mill cover, then close the cover, start the mill, and under the action of the driving mechanism, the cylinder body rotates. The materials in the mill are impacted and ground by the grinding media and are gradually crushed into the required fineness; stop the mill, open the cover, replace the mill cover with the grate type, screen out the ground fine powder through the grate bars, and discharge it from the discharge port, while the metal ball media are retained in the cylinder body;

[0012] The cylinder body contains cement clinker particles, gypsum and other materials and metal ball media and rotates under the action of the driving mechanism. The mutual collision of the materials and the metal ball media and the impact on the cylinder body will cause relatively large noise. The installation of the housing plays a role in sound insulation and noise reduction; the noise reduction component in the housing adopts a noise reduction mode that converts noise into vibration and then absorbs it to reduce noise. First, the sound absorption layer absorbs and captures the noise, then the sound wave vibration conversion component converts the captured noise energy into vibration, then the vibration absorption damping component absorbs the vibration energy, and finally the sound absorption and sound insulation board further optimizes the noise reduction effect, ultimately achieving a significant reduction in the noise intensity.

[0013] Further, rotating arms are symmetrically arranged at the centers of the two sides of the cylinder body. The ends of the rotating arms are installed on the mill support through rotating bearings, and the cylinder body is rotationally supported on the mill support through the rotating arms; the driving mechanism drives the cylinder body to rotate by driving one of the rotating arms to rotate.

[0014] The driving mechanism generally includes a motor, a reducer, a coupling, etc., and is used to drive the cylinder body to rotate. The driving mechanism drives the rotating arm to rotate, thereby driving the cylinder body to rotate. The materials in the cylinder body are impacted and ground by the grinding media and become the required fine materials.

[0015] Further, the rotating arms extend from both sides of the housing, and rotating bearings are arranged between the housing and the rotating arms.

[0016] Further, the housing includes a detachable upper housing and a lower housing; the cover is arranged on the upper housing, and the discharge port is arranged on the lower housing.

[0017] Further, the noise reduction component is also arranged on the inner wall of the cover.

[0018] Further, a guide hopper is arranged circumferentially along the discharge port in the inner cavity of the housing, which plays a guiding role during discharging.

[0019] Further, a material receiving bin with an open upper end is provided below the discharge port. The top of the side wall of the material receiving bin is attached to the outer wall of the housing. A noise reduction component is also provided on the inner wall of the material receiving bin. A bin door is provided on the front side wall of the material receiving bin. An open-top material receiving box that can enter and exit through the bin door is provided inside the cavity of the material receiving bin. The material receiving box receives the discharged powder, and a rubber cushion plate is provided at the bottom of the material receiving bin.

[0020] Further, a noise reduction component is also provided on the inner side of the front side wall of the material receiving box, and a handle is provided on the outer side of the front side wall of the material receiving box.

[0021] Further, the acoustic wave vibration conversion member is a wavy acoustic wave vibration film. The vibration absorption damping member includes a damping plate and a plurality of damping springs distributed on the damping plate. The damping plate is in contact with the acoustic wave vibration conversion member, and the damping springs are in contact with the sound absorption and sound insulation board.

[0022] Further, the noise reduction component is provided on the inner wall of the arc surface of the housing. Sound absorption and sound insulation boards and a sound absorption layer are sequentially provided on the inner walls of the two end covers of the housing.

[0023] Compared with the prior art, the noise reduction type small cement ball mill of the present invention has the following advantages:

[0024] (1) The noise reduction type small cement ball mill of the present invention has a reasonable structural design. The cylinder body is covered by a housing provided with a noise reduction component, which can reduce the noise generated during the ball milling process. The noise reduction mode of converting noise into vibration and then absorbing it is adopted, and it has a good sound insulation and noise reduction effect.

[0025] (2) Rubber cushion plates are provided at the bottoms of both the material receiving bin and the base of the noise reduction type small cement ball mill of the present invention, which can reduce the vibration noise generated during the operation of the equipment and further optimize the noise reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS [[ID=--]] [[ID=--]]

[0026] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: [[ID=--]] [[ID=--]]

[0027] [[ID=--]] Figure 1 is a schematic internal structure diagram of the noise reduction type small cement ball mill according to an embodiment of the present invention; [[ID=--]] [[ID=--]]

[0028] [[ID=--]] Figure 2 is a schematic structure diagram of the noise reduction type small cement ball mill according to an embodiment of the present invention. [[ID=--]] [[ID=--]]

[0029] Description of the reference numerals in the drawings: [[ID=--]] [[ID=--]]

[0030] 1 - Mill support, 2 - Housing support, 3 - Base, 4 - Cylinder body, 5 - Driving mechanism, 6 - Mill cover, 7 - Rotating arm, 8 - Upper housing, 9 - Lower housing, 10 - Cover, 11 - Discharge port, 12 - Feeding hopper, 13 - Shell, 14 - Sound-absorbing layer, 15 - Acoustic wave vibration conversion component, 16 - Vibration absorption damping component, 17 - Sound-absorbing and sound-insulating board, 18 - Material receiving bin, 19 - Material receiving box. Detailed implementation mode

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0034] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0035] As Figure 1 and 2 shown, a noise-reducing cement ball mill test mill includes a mill, a mill support 1, a housing, a housing support 2, and a base 3;

[0036] The mill includes a cylinder body 4 and a driving mechanism 5 for driving the rotation of the cylinder body 4; a mill cover 6 is provided on the cylinder body 4, and rotating arms 7 are symmetrically arranged at the centers of both sides of the cylinder body 4. The ends of the rotating arms 7 are installed on the mill support 1 through rotating bearings, and the cylinder body 4 is rotationally supported on the mill support 1 through the rotating arms 7; the driving mechanism 5 drives the rotation of the cylinder body 4 by driving the rotation of one of the rotating arms 7;

[0037] The mill support 1 bears the mill;

[0038] The housing is sleeved outside the cylinder body 4, the rotating arm 7 extends out from both sides of the housing, and a rotating bearing is arranged between the housing and the rotating arm 7; the housing includes an upper housing 8 and a lower housing 9 which are detachably connected; a cover 10 is arranged on the upper housing 8, a discharge port 11 is arranged on the lower housing 9, and a material guiding hopper 12 is arranged along the circumferential direction of the discharge port 11 in the inner cavity of the housing; both the upper housing 8 and the lower housing 9 include a housing body 13 and a noise reduction component; the noise reduction component includes a sound absorption layer 14, a sound wave vibration conversion part 15, a vibration absorption damping part 16, and a sound absorption and sound insulation board 17 which are arranged in sequence, and the sound absorption and sound insulation board 17 is attached to the inner wall of the housing body 13; the sound wave vibration conversion part 15 is a wavy sound wave vibration film; the vibration absorption damping part 16 includes a damping plate and a plurality of damping springs distributed on the damping plate, the damping plate contacts with the sound wave vibration conversion part 15, and the damping springs contact with the sound absorption and sound insulation board 17; the noise reduction component is arranged on the inner wall of the arc surface of the housing body 13; the sound absorption and sound insulation board 17 and the sound absorption layer 14 are arranged in sequence on the inner walls of the two end covers of the housing body 13; the inner wall of the cover 10 is also provided with a noise reduction component;

[0039] A receiving bin 18 with an open upper end is arranged below the discharge port 11, and the top of the side wall of the receiving bin 18 is attached to the outer wall of the housing; the inner wall of the receiving bin 18 is also provided with a noise reduction component, a bin door is arranged on the front side wall of the receiving bin 18, a receiving box 19 with an open upper end which can enter and exit through the bin door is arranged in the inner cavity of the receiving bin 18, a rubber cushion plate is arranged at the bottom of the receiving bin 18, a noise reduction component is also arranged on the inner side of the front side wall of the receiving box 19, and a handle is arranged on the outer side of the front side wall of the receiving box 19;

[0040] The housing support 2 bears the housing and the receiving bin 18;

[0041] Both the mill support 1 and the housing support 2 are arranged on the base 3, and a rubber cushion plate is arranged at the bottom of the base 3.

[0042] The working process of the noise reduction type small cement ball mill test mill of the present utility model is as follows:

[0043] After the cover 10 and the mill cover 6 are opened, cement clinker particles, gypsum and other materials and metal ball media are put into the cylinder body 4; the sealed mill cover is covered, then the cover 10 is closed, the mill is started, and under the action of the driving mechanism, the cylinder body 4 rotates, and the materials in the cylinder body 4 are impacted and ground by the grinding media and are gradually ground into the required fineness; the mill is stopped, the cover 10 is opened, the mill cover 6 is replaced with a grate type, the ground fine powder is screened out through the grate bars, the fine powder falls into the receiving box 19 from the discharge port 11, and the metal ball media are retained in the cylinder body 4, and the receiving box 19 containing the powder is taken out;

[0044] During the ball milling process, the material and the metal ball medium collide with each other, and hitting the cylinder body 4 will cause relatively large noise. The noise reduction component adopts a noise reduction mode that converts noise into vibration and then absorbs it to reduce noise. First, the sound absorption layer 14 absorbs and captures the noise, then the sound wave vibration conversion component 15 converts the captured noise energy into vibration, and then the vibration absorption damping component 16 absorbs the vibration energy. Finally, the sound absorption and sound insulation board 17 further optimizes the noise reduction effect, ultimately achieving a significant reduction in the noise intensity.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. 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 noise-reducing type small cement ball mill for test, characterized in that, Comprising: A mill, the mill comprising a cylinder body and a driving mechanism for driving the rotation of the cylinder body; a mill cover is provided on the cylinder body; A mill support for carrying the mill; A housing which covers the outside of the cylinder body, a cover is provided at the upper end of the housing and a discharge port is provided at the lower end; the housing comprises a shell body and a noise reduction component provided on the inner wall of the shell body, the noise reduction component comprises a sound absorption layer, a sound wave vibration conversion member, a vibration absorption damping member, and a sound absorption and sound insulation board arranged in sequence, and the sound absorption and sound insulation board is attached to the inner wall of the shell body; A housing support for carrying the housing; A base, both the mill support and the housing support are arranged on the base, and a rubber cushion plate is provided at the bottom of the base.

2. The noise-reducing type cement ball mill test small mill according to claim 1, characterized in that: Rotating arms are symmetrically arranged at the centers of both sides of the cylinder body, the ends of the rotating arms are installed on the mill support through rotating bearings, and the cylinder body is rotationally supported on the mill support through the rotating arms; the driving mechanism drives the rotation of the cylinder body by driving the rotation of one of the rotating arms.

3. The noise-reducing cement ball mill test mill according to claim 2, wherein: The rotating arms extend out from both sides of the housing, and a rotating bearing is arranged between the housing and the rotating arms.

4. The noise reduction type cement ball mill test mill according to claim 1, characterized in that: The housing comprises a detachable upper housing and a lower housing; the cover is provided on the upper housing, and the discharge port is provided on the lower housing.

5. The noise-reducing type small cement ball mill for test according to claim 1, characterized in that: The noise reduction component is also provided on the inner wall of the cover.

6. The noise-reducing type cement ball mill test mill according to claim 1, characterized in that: A guide hopper is arranged circumferentially along the discharge port in the inner cavity of the housing.

7. The noise reduction type cement ball mill test mill according to claim 1, characterized in that: A receiving bin with an open upper end is provided below the discharge port, the top of the side wall of the receiving bin is attached to the outer wall of the housing; the noise reduction component is also provided on the inner wall of the receiving bin, a bin door is provided on the front side wall of the receiving bin, a receiving box with an open upper end that can enter and exit through the bin door is arranged in the inner cavity of the receiving bin, and a rubber cushion plate is provided at the bottom of the receiving bin.

8. The noise reduction type cement ball mill test mill according to claim 7, characterized in that: The noise reduction component is also provided on the inner side of the front side wall of the receiving box, and a handle is provided on the outer side of the front side wall of the receiving box.

9. The noise reduction type cement ball mill test small mill according to any one of claims 1 to 8, characterized in that: The sound wave vibration conversion member is a wavy sound wave vibration film; the vibration absorption damping member comprises a damping plate and a plurality of damping springs distributed on the damping plate, the damping plate contacts the sound wave vibration conversion member, and the damping springs contact the sound absorption and sound insulation board.

10. The noise-reducing type small cement ball mill for test according to claim 9, characterized in that: The noise reduction component is provided on the inner wall of the arc surface of the shell body; the sound absorption and sound insulation board and the sound absorption layer are sequentially arranged on the inner walls of the end covers on both sides of the shell body.

Images