Coaxial fixed connecting device and sand mill

Abstract

The invention provides a coaxial fixed connecting device. The coaxial fixed connecting device comprises a first connecting part, a second connecting part and at least two first reinforcing ribs, the first connecting part is provided with a first through hole, the second connecting part is arranged opposite to the first connecting part and is provided with a second through hole, and the first through hole and the second through hole are coaxially arranged; the first reinforcing ribs are clamped between the first connecting part and the second connecting part, surround the first through hole and the second through hole, and are symmetrically arranged at intervals along the peripheral sides of the first connecting part and the second connecting part. According to the coaxial fixed connecting device, the stability of coaxial connection of the driving assembly and the grinding assembly is improved, the overall structure is simple and ingenious, the machining cost is low, and the application range is wide. The invention further provides a sand mill adopting the coaxial fixed connecting device.

Description

[Technical field]

[0001] The invention relates to the technical field of grinding, and in particular to a coaxial fixed connection device and a vertical sand mill. [Background technology]

[0002] There are many types of sand mills. They can be divided into vertical sand mills and horizontal sand mills according to the layout of the grinding cylinder, and can also be divided into sand mills of various sizes according to the capacity of the grinding cylinder. With the increasing demand for processing efficiency, sand mills from a few liters, dozens of liters to hundreds of liters can no longer meet the needs of large-scale production, and the demand for sand mills of thousands of liters has begun to gradually increase.

[0003] The existing sand mill is mainly composed of a frame, a drive assembly, a grinding assembly and other structures. The force transmission is achieved by directly connecting the drive assembly and the grinding assembly, thereby realizing the processing of the ground material. However, when the volume reaches one thousand liters, the weight and rotational force of the drive assembly and the grinding assembly in the sand mill will increase greatly, and the existing connection method cannot meet the needs of actual production. If the transmission is still carried out by directly connecting the drive assembly and the grinding assembly, it will cause axial deflection problems, which is not only not conducive to processing and production, but also causes damage to the shaft or even breakage. [Summary of the invention]

[0004] The present invention provides a coaxial fixed connection device and a sand grinder for solving the above-mentioned problem, so as to improve the safety and reliability of production and processing.

[0005] The present invention provides a coaxial fixed connection device, comprising a first connection part, a second connection part and at least two first reinforcing ribs; the first connection part is provided with a first through hole, the second connection part is arranged relative to the first connection part and is provided with a second through hole, and the first through hole and the second through hole are arranged coaxially; the first reinforcing rib is clamped between the first connection part and the second connection part, and surrounds the first through hole and the second through hole, and is spaced and symmetrically arranged along the circumference of the first connection part and the second connection part.

[0006] The present invention provides a sand mill, comprising a frame, a driving assembly, a grinding assembly and a coaxial fixed connection device, wherein the driving assembly is arranged on the frame and comprises an output shaft; the grinding assembly is arranged on the frame relative to the driving assembly and comprises a grinding rotor; the coaxial fixed connection device is clamped between the driving assembly and the grinding assembly, and comprises a first connecting part, a second connecting part and at least two first reinforcing ribs; the first connecting part is provided with a first through hole, the second connecting part is arranged relative to the first connecting part, and is provided with a second through hole, and the first through hole and the second through hole are coaxially arranged; the first reinforcing rib is clamped between the first connecting part and the second connecting part, and surrounds the first through hole and the second through hole, and is spaced and symmetrically arranged along the circumference of the first connecting part and the second connecting part; the first through hole, the second through hole, the output shaft and the grinding rotor are all coaxially arranged, and the output shaft is connected to or integrated with the grinding rotor.

[0007] Compared with the prior art, the coaxial fixed connection device provided by the present invention realizes the coaxial connection of the drive assembly and the grinding assembly by providing the first connection part, the second connection part and the first reinforcing rib, and is different from the mode in which the drive assembly is directly connected to the grinding assembly, which effectively improves the stability of the coaxial connection, and the first reinforcing rib can greatly enhance the reliability of the sand mill. When the drive assembly is in working state, a torque in the rotation direction is generated, and during the force transmission process, the first reinforcing rib will not affect the positional relationship of the axial connection with the grinding assembly.

[0008] In addition, the overall structure of the coaxial fixed connection device is simple and ingenious, the processing cost is low, and the application range is wide. It can be used not only for the large-capacity sand mill, but also for the small and medium-sized sand mill; whether it is a vertical sand mill or a horizontal sand mill, the coaxial fixed connection device can also be used. In the horizontal sand mill, the supporting effect of the driving component and the grinding component can be further improved.

[0009] The sand mill provided by the present invention adopts the coaxial fixed connection device, and the positional relationship between the grinding rotor and the output shaft being coaxially arranged will be more stable, which effectively protects the output shaft and the grinding rotor, and increases the service life of the sand mill, thereby improving processing efficiency and reducing costs while improving safety and stability.

Brief Description of the Drawings

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0011] Figure 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the sand mill provided by the present invention;

[0012] Figure 2 is a three-dimensional structural exploded view of the first embodiment of the sand mill provided by the present invention;

[0013] Figure 3 is a schematic diagram of the three-dimensional structure of the second embodiment of the sand mill provided by the present invention;

[0014] Figure 4 is a schematic diagram of the three-dimensional structure of the first embodiment of the coaxial fixed connection device provided by the present invention;

[0015] Figure 5 is a schematic diagram of the three-dimensional structure of the second embodiment of the coaxial fixed connection device provided by the present invention;

[0016] Figure 6 is a schematic diagram of the three-dimensional structure of the third embodiment of the coaxial fixed connection device provided by the present invention;

[0017] Figure 7 is a cross-sectional view of a fourth embodiment of the coaxial fixed connection device provided by the present invention; and

[0018] Figure 8 yes Figure 7 An enlarged cross-sectional view of the coupling is shown. [Specific implementation method]

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 They are respectively a three-dimensional structural schematic diagram and a three-dimensional structural exploded diagram of the first embodiment of the sand mill 100 provided by the present invention. The sand mill 100 comprises a frame 1, a driving assembly 3, a grinding assembly 5 and a coaxial fixed connection device 7. The driving assembly 3 is arranged on the frame 1 and comprises an output shaft 31; the grinding assembly 5 is arranged on the frame 1 relative to the driving assembly 3 and comprises a grinding rotor 51; the coaxial fixed connection device 7 is sandwiched between the driving assembly 3 and the grinding assembly 5.

[0025] The sand mill 100 is assisted by the coaxial fixed connection device 7 to connect and fix the relative positions of the driving component 3 and the grinding component 5, thereby improving the reliability of the torque transmission in the rotational direction between the driving component 3 and the grinding component 5, and effectively protecting the output shaft 31 and the grinding rotor 51, thereby increasing the service life of the sand mill 100.

[0026] Please continue reading Figure 3 , Figure 3 FIG. 1 is a schematic diagram of the three-dimensional structure of the second embodiment of the sand mill 100 provided by the present invention. Figure 1 The vertical sand mill 100 shown and Figure 3 In the horizontal sand mill 100 shown, the arrangement of the coaxial fixed connection device 7 may also be changed accordingly, but can be used to assist in connecting and fixing the relative positions of the drive assembly 3 and the grinding assembly 5. Therefore, the vertical or horizontal structure of the sand mill 100 is not limited here.

[0027] Please continue reading Figure 4 , Figure 4 It is a three-dimensional structural schematic diagram of the first embodiment of the coaxial fixed connection device 7 provided by the present invention. The coaxial fixed connection device 7 includes a first connection part 71, a second connection part 73 and at least two first reinforcing ribs 75. The first connection part 71 is provided with a first through hole 711, the second connection part 73 is arranged relative to the first connection part 71, and is provided with a second through hole 731, and the first through hole 711 and the second through hole 731 are arranged coaxially; the first reinforcing rib 75 is sandwiched between the first connection part 71 and the second connection part 73, and surrounds the first through hole 711 and the second through hole 731, and is spaced and symmetrically arranged along the circumference of the first connection part 71 and the second connection part 73; the first through hole 711, the second through hole 731, the output shaft 31 and the grinding rotor 51 are all coaxially arranged.

[0028] In order to meet the needs of processing efficiency, the capacity of the sand mill 100 is continuously increased, and can reach a capacity of one thousand liters. Correspondingly, the weight of the driving assembly 3 and the grinding assembly 5 increases, and in order to achieve smooth processing, the torque in the rotation direction of the driving assembly 3 is also continuously increased. The transmission of force between the driving assembly 3 and the grinding assembly 5 is achieved through the output shaft 31 and the grinding rotor 51, which easily causes the relative position of the driving assembly 3 and the grinding assembly 5 to change.

[0029] The coaxial fixed connection device 7 is fixedly connected to the drive assembly 3 and the grinding assembly 5 respectively by providing the first connection part 71 and the second connection part 73, and the first through hole 711 and the second through hole 731 are coaxially provided with the output shaft 31 and the grinding rotor 51, so that the positions of the drive assembly 3 and the grinding assembly 5 are relatively fixed, and the output shaft 31 and the grinding rotor 51 are ensured to remain coaxial. The first reinforcing rib 75 is not only used to connect and fix the first connection part 71 and the second connection part 73, but also can transmit the torque in the rotation direction, protect the output shaft 31 and the grinding rotor 51, and avoid being affected by the torque.

[0030] Please continue reading Figure 5 , Figure 5It is a schematic diagram of the three-dimensional structure of the second embodiment of the coaxial fixed connection device 7 provided by the present invention. The coaxial fixed connection device 7 also includes at least two second reinforcing ribs 77, which are sandwiched between the first connection part 71 and the second connection part 73, and are spaced and symmetrically arranged around the first through hole 711 and the second through hole 731, along the circumference of the first connection part 71 and the second connection part 73, and the second reinforcing ribs 77 are in an arc-shaped structure as a whole. The first reinforcing rib 75 and the second reinforcing rib 77 cooperate with each other, which is not only more conducive to fixing the connection position of the drive component 3 and the grinding component 5, but also convenient for the transmission of the torque in the rotation direction. Since the second reinforcing rib 77 is arranged in an arc shape as a whole, the second reinforcing rib 77 is less likely to be twisted off when transmitting the force in the rotation direction.

[0031] In order to further enhance the connection and fixation effect and improve the strength of the fixed connection device, the second reinforcing rib 77 is connected to the first reinforcing rib 75, and the first reinforcing rib 75 is arranged on the inner side and / or outer side of the second reinforcing rib 77. In this embodiment, the first reinforcing rib 75 is arranged on both sides of the inner and outer sides of the middle position of the second reinforcing rib 77 to form a "cross"-shaped structure. The first reinforcing rib 75 and the second reinforcing rib 77 support each other in the vertical direction, and the torsion resistance of the overall structure is greatly improved. Moreover, the first reinforcing rib 75 arranged on both sides of the inner and outer sides of the second reinforcing rib 77 are combined to form a triangular structure, making the structure more stable.

[0032] It should be noted that the connection between the first reinforcing rib 75 and the second reinforcing rib 77 and the first connecting portion 71 and the second connecting portion 73 can be either welded or integrated. In this embodiment, an integrated arrangement is adopted, which can make the connection between the various components more tight and the overall structure more stable and reliable.

[0033] Please continue reading Figure 6 , Figure 7 and Figure 8 , Figure 6 is a three-dimensional structural diagram of the third embodiment of the coaxial fixed connection device 7 provided by the present invention, Figure 7 is a cross-sectional view of a third embodiment of the coaxial fixed connection device 7 provided by the present invention, Figure 8 yes Figure 7The cross-sectional enlarged view of the coupling is shown. The coaxial fixed connection device 7 also includes a bearing seat 72, and the first connecting portion 71, the second connecting portion 73 and the first reinforcing rib 75 are respectively provided at both ends of the bearing seat 72, and the first through hole 711 of each first connecting portion 71 and the second through hole 731 of each second connecting portion 73 are coaxially arranged. The bearing seat 72 and the output shaft 31 or the grinding rotor 51 can be connected through a bearing structure 74 or a sliding structure.

[0034] The coaxial fixed connection device 7 is provided with the bearing seat 72, and cooperates with the first connection part 71, the second connection part 73 and the first reinforcing rib 75, so that the relative position between the driving assembly 3 and the grinding assembly 5 is more stable, and the axial angles of the output shaft 31 and the grinding rotor 51 are limited at the same time, so that the working axis of the sand mill 100 remains consistent, the processing process is more stable and reliable, and the output shaft 31 and the grinding assembly 5 can also be better protected. Especially in the horizontal sand mill 100, the bearing seat 72 can also support the output shaft 31 and the grinding assembly 5, and prevent the output shaft 31 and the grinding assembly 5 from deviating from the axial direction due to the influence of gravity.

[0035] Of course, in order to enhance the stability of the coaxial fixed connection device 7, in addition to the first connection part 71, the second connection part 73 and the first reinforcing rib 75, the second reinforcing rib 77 may also be provided at both ends of the bearing seat 72, and no specific limitation is made here.

[0036] The bearing seat 72 includes a support frame 721, a first end 723 and a second end 725. The support frame 721 is provided with a third through hole 727 penetrating the support frame 721 and coaxially opposite to the first through hole 711 and the second through hole 731. The first end 723 and the second end 725 are respectively located on both sides of the support frame 721, and the first end 723 is integrated with the first connecting portion 71, and / or the second end of the bearing seat 72 is integrated with the second connecting portion 73.

[0037] The bearing seat 72 is coaxially arranged with the first through hole 711 and the second through hole 731 through the third through hole 727, so that the output shaft 31 and the grinding rotor 51 can be arranged at the same axial position. The first end 723 and the second end 725 are used to install the first connecting part 71 or the second connecting part 73 respectively. In order to enhance the stability of the coaxial fixed connection device 7, the first end 723 and the first connecting part 71, and the second end 725 of the bearing seat 72 and the second connecting part 73 can be integrated.

[0038] In this embodiment, the coaxial fixed connection device 7 further includes a bearing structure 74, which is disposed in the third through hole 727 and connected to the bearing seat 72. The bearing structure 74 is mainly used to cooperate with the bearing seat 72 to support and limit the output shaft 31 and the grinding rotor 51. When the drive assembly 3 is working, the output shaft 31 and the grinding rotor 51 can rotate relative to the bearing seat 72 without affecting the axial position of the output shaft 31 and the grinding rotor 51. The number of the bearing structure 74 is at least one, preferably two, and the two bearing structures 74 are spaced apart on both sides of the bearing seat 72. When realizing the function of supporting and limiting, it is more stable and more cost-saving than the setting method of multiple bearing structures 74.

[0039] It should be noted that in the above embodiment, the output shaft 31 and the grinding rotor 51 can be coaxially connected or integrated, which is not limited here. However, the coaxial fixed connection device 7 has the same protective effect on the output shaft 31 and the grinding rotor 51.

[0040] In this embodiment, the output shaft 31 is coaxially connected to the grinding rotor 51. The coaxial fixed connection device 7 further includes a coupling 76. The first connection portion 71, the second connection portion 73, the first reinforcing rib 75 and the second reinforcing rib 77 together form a receiving space 79. The coupling 76 is disposed in the receiving space 79.

[0041] The coupling 76 is mainly used to connect and fix the output shaft 31 and the grinding rotor 51. The coupling 76 is arranged in the receiving space 79, which is helpful to protect the output shaft 31 and the grinding rotor 51. The reason is that the first connecting portion 71, the second connecting portion 73, the first reinforcing rib 75 and the second reinforcing rib 77 cooperate with each other to fully fix the drive assembly 3 and the grinding assembly 5 and transmit force. The rotational direction and radial force of the coupling 76 arranged in the receiving space 79 will not be affected by the position of the drive assembly 3 and the grinding assembly 5, ensuring the coaxial arrangement between the output shaft 31 and the grinding rotor 51.

[0042] In addition, when the coupling 76 needs to be maintained, it is only necessary to remove the first connecting portion 71 and the second connecting portion 73, which is very convenient.

[0043] In order to precisely adjust the axial arrangement of the output shaft 31 and the grinding rotor 51 and avoid the influence of the drive assembly 3 and the grinding assembly 5 on the axial connection as much as possible, the coupling 76 includes a first sub-section 761, a second sub-section 763 and a metal sheet 765. The second sub-section 763 is coaxially arranged relative to the first sub-section 761, and the metal sheet 765 is sandwiched between the first sub-section 761 and the second sub-section 763. The output shaft 31 is connected to the first sub-section 761, and the grinding rotor 51 is connected to the second sub-section 763. Since the first sub-section 761 and the second sub-section 763 are coaxially arranged, the output shaft 31 and the grinding rotor 51 also ensure an effective coaxial arrangement. The metal sheet 765 can further buffer the force between the first section 761 and the second section 763, and cooperate with the first connecting part 71, the second connecting part 73, the first reinforcing rib 75 and the second reinforcing rib 77 to finally achieve relative fixation of the position between the output shaft 31 and the grinding rotor 51, and even a slight deflection will not affect the transmission of force.

[0044] In this embodiment, a window 76 is formed between adjacent second reinforcing ribs 77, and a protective net 74 is provided at the window 76. The coaxial fixed connection device 7 is provided with the window 76, which is conducive to observing the condition of the coupling 76, grasping the connection relationship between the output shaft 31 and the grinding rotor 51 at any time, and tracking and judging whether there is a fault so as to deal with it in time. At the same time, the protective net 74 is provided on the window 76, which can effectively protect the safety of the observer.

[0045] Compared with the prior art, the coaxial fixed connection device 7 provided by the present invention realizes the coaxial connection of the drive assembly 3 and the grinding assembly 5 by providing the first connection part 71, the second connection part 73 and the first reinforcing rib 75, and is different from the mode in which the drive assembly 3 is directly connected to the grinding assembly 5, effectively improving the stability of the coaxial connection, and the first reinforcing rib 75 can greatly enhance the reliability of the sand mill 100. When the drive assembly 3 is in working state, a torsional force in the rotation direction is generated, and during the force transmission process, the first reinforcing rib 75 will not affect the positional relationship of the axial connection with the grinding assembly 5.

[0046] In addition, the overall structure of the coaxial fixed connection device 7 is simple and ingenious, the processing cost is low, and the application range is wide. It can be applied not only to the large-capacity sand mill 100, but also to the small and medium-sized sand mill 100; whether it is a vertical sand mill or a horizontal sand mill, the coaxial fixed connection device 7 can also be used. In the horizontal sand mill, the supporting effect of the driving component 3 and the grinding component 5 can be further improved.

[0047] The sand mill 100 provided by the present invention adopts the coaxial fixed connection device 7, and the positional relationship of the coaxial arrangement of the grinding rotor 51 and the output shaft 31 will be more stable, which effectively protects the output shaft 31 and the grinding rotor 51, and increases the service life of the sand mill 100, thereby improving processing efficiency and reducing costs while improving safety and stability.

[0048] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A coaxial fixed connection device for connecting a driving assembly and a grinding assembly, characterized in that: include: A first connecting portion, wherein the first connecting portion is provided with a first through hole; a second connecting portion, the second connecting portion being arranged opposite to the first connecting portion and having a second through hole, the first through hole and the second through hole being arranged coaxially; and At least two first reinforcing ribs are sandwiched between the first connecting portion and the second connecting portion, and surround the first through hole and the second through hole, and are spaced and symmetrically arranged along the circumference of the first connecting portion and the second connecting portion.

2. The coaxial fixed connection device according to claim 1, characterized in that: It also includes at least two second reinforcing ribs, which are sandwiched between the first connecting part and the second connecting part, and surround the first through hole and the second through hole, and are spaced and symmetrically arranged along the circumference of the first connecting part and the second connecting part. The second reinforcing ribs are generally in an arc-shaped structure.

3. The coaxial fixed connection device according to claim 2, characterized in that: The second reinforcing rib is connected to the first reinforcing rib, and the first reinforcing rib is arranged on the inner side and / or the outer side of the second reinforcing rib.

4. The coaxial fixed connection device according to claim 2, characterized in that: It also includes a coupling. The first connecting portion, the second connecting portion, the first reinforcing rib and the second reinforcing rib together form a receiving space, and the coupling is arranged in the receiving space.

5. The coaxial fixed connection device according to claim 4, characterized in that: The coupling comprises: Division I; a second subsection, the second subsection being coaxially disposed relative to the first subsection; and A metal sheet is sandwiched between the first section and the second section.

6. The coaxial fixed connection device according to claim 4, characterized in that: Windows are formed between adjacent second reinforcing ribs, and protective nets are provided at the windows.

7. The coaxial fixed connection device according to claim 1, characterized in that: It also includes a bearing seat, wherein the first connecting portion, the second connecting portion and the first reinforcing rib are respectively provided at two ends of the bearing seat, and the first through hole of each first connecting portion and the second through hole of each second connecting portion are coaxially arranged.

8. The coaxial fixed connection device according to claim 7, characterized in that: The bearing seat comprises: A support frame, wherein the support frame is provided with a third through hole penetrating the support frame and coaxial with the first through hole and the second through hole; A first end and a second end, wherein the first end and the second end are respectively located on both sides of the support frame, the first end is integrated with the first connecting portion, and / or the second end of the bearing seat is integrated with the second connecting portion.

9. The coaxial fixed connection device according to claim 8, characterized in that: It also includes a bearing structure, which is arranged in the third through hole and connected to the bearing seat.

10. A sand mill, characterized in that: include: frame; A drive assembly, the drive assembly is arranged on the frame and comprises an output shaft; A grinding assembly, the grinding assembly is arranged on the frame relative to the driving assembly and comprises a grinding rotor; and According to any one of claims 1 to 9, the coaxial fixed connection device is clamped between the drive assembly and the grinding assembly, and the first through hole, the second through hole, the output shaft and the grinding rotor are all coaxially arranged, and the output shaft is coaxially connected or integrated with the grinding rotor.

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