Rod pin type sand mill

Abstract

The utility model discloses a rod pin type sand mill and relates to the technical field of grinding. The rod pin type sand mill comprises a driving shaft and a stirring rod pin. The stirring rod pin is connected to the circumferential face of the driving shaft and extends in the radial direction of the driving shaft, the cross section of the stirring rod pin is non-circular, the stirring rod pin is provided with a flow guide face in the length direction of the stirring rod pin, and the flow guide face is used for conducting flow guide on materials and friction media in the process that the driving shaft drives the stirring rod pin to rotate. Compared with the prior art, the rod pin type sand mill provided by the utility model has the advantages that the stirring rod pin connected to the driving shaft and the flow guide surface arranged on the stirring rod pin are adopted, so that the rotating resistance on the stirring rod pin can be effectively reduced, the rotating speed is increased, the material mixing degree is improved, and the rod pin type sand mill is suitable for large-scale production of products.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding, and particularly relates to a pin type sand mill. BACKGROUND

[0002] The sand mill is a grinding device developed from the ball mill, and is one of the most advanced and efficient grinding devices with the most extensive application material particle size, and has finer grinding granularity and better grinding quality. The material flowing through the cavity is dispersed, broken, ground, homogenized and depolymerized by the shearing force and collision force between the friction media (zirconium beads or glass beads) in the cavity, so that the material mixing degree is low, and the sand mill is not suitable for mass production of products.

[0003] Therefore, it is particularly important to design and manufacture a pin type sand mill with small rotation resistance and high material mixing degree. SUMMARY

[0004] The utility model discloses a pin type sand mill, which can effectively reduce the rotation resistance of the stirring pin, improve the rotation speed and the material mixing degree, and is suitable for mass production of products.

[0005] The utility model discloses the following technical scheme.

[0006] A pin type sand mill comprises a driving shaft and a stirring pin, the stirring pin is connected to the peripheral surface of the driving shaft and is arranged in the radial direction of the driving shaft, the cross section of the stirring pin is non-circular, and the stirring pin is provided with a flow guide surface in the length direction thereof, and the flow guide surface is used for guiding the material and the friction medium during the rotation of the stirring pin driven by the driving shaft.

[0007] Optionally, the number of flow guide surfaces is one, and the stirring pin is used for one-way flow guiding of the material and the friction medium.

[0008] Optionally, the number of flow guide surfaces is two, and the two flow guide surfaces are oppositely arranged on the two sides of the stirring pin, and the stirring pin is used for two-way flow guiding of the material and the friction medium.

[0009] Optionally, the flow guide surface is an inner concave arc surface or a plane.

[0010] Optionally, the cross section of the stirring pin is square or triangular.

[0011] Optionally, the number of stirring pins is multiple, and the multiple stirring pins are arranged on the peripheral surface of the driving shaft at intervals.

[0012] Optionally, the plurality of stirring rod pins are divided into a plurality of groups, the plurality of stirring rod pins in each group are arranged in parallel and spaced apart in the axial direction of the driving shaft, the plurality of groups of stirring rod pins are arranged in sequence in the circumferential direction of the driving shaft, and two adjacent groups of stirring rod pins are arranged in a staggered manner in the axial direction of the driving shaft, and one group of stirring rod pins is used to guide the material and the friction medium to an adjacent group of stirring rod pins.

[0013] Optionally, the surface of the stirring rod pin is densely provided with a plurality of protrusions.

[0014] Optionally, the rod pin type sand mill further comprises an outer cylinder, the driving shaft is rotatably installed in the outer cylinder, and the driving shaft is coaxially arranged with the outer cylinder.

[0015] Optionally, the distance between the end of the stirring rod pin away from the driving shaft and the inner wall of the outer cylinder is 1.5-2 mm.

[0016] The rod pin type sand mill provided by the utility model has the following beneficial effects:

[0017] The rod pin type sand mill provided by the utility model, the stirring rod pin is connected to the peripheral surface of the driving shaft and is arranged in extension in the radial direction of the driving shaft, the cross section of the stirring rod pin is non-circular, and the stirring rod pin is provided with a flow guide surface in the length direction thereof, and the flow guide surface is used to guide the material and the friction medium during the rotation of the stirring rod pin driven by the driving shaft. Compared with the prior art, the rod pin type sand mill provided by the utility model can effectively reduce the rotational resistance of the stirring rod pin, improve the rotation speed, improve the mixing degree of the material, and is suitable for batch production of products. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The structure schematic view of the rod pin type sand mill provided by the first embodiment of the utility model;

[0020] Figure 2 The structure schematic view of the rod pin type sand mill provided by the first embodiment of the utility model, the cross section of the stirring rod pin is square and the flow guide surface is a plane;

[0021] Figure 3 The structure schematic view of the rod pin type sand mill provided by the first embodiment of the utility model, the cross section of the stirring rod pin is triangular and the flow guide surface is a plane;

[0022] Figure 4 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the first embodiment of the present application is square and the flow guide surface is concave arc surface;

[0023] Figure 5 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the first embodiment of the present application is triangle and the flow guide surface is concave arc surface;

[0024] Figure 6 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the second embodiment of the present application is large triangle and the flow guide surface is plane;

[0025] Figure 7 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the second embodiment of the present application is small triangle and the flow guide surface is plane;

[0026] Figure 8 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the second embodiment of the present application is large triangle and the flow guide surface is concave arc surface;

[0027] Figure 9 Structure schematic view of the cross section of the stirring pin in the bar pin type sand mill provided by the second embodiment of the present application is small triangle and the flow guide surface is concave arc surface.

[0028] Icon: 100 - bar pin type sand mill; 110 - driving shaft; 120 - stirring pin; 121 - flow guide surface; 130 - outer cylinder. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] It should be noted that like numerals and letters refer to like items throughout the several views, where like numerals and letters refer to like items throughout the several views, and therefore, once an item is defined in one view, it need not be further defined and explained in subsequent views.

[0032] In the description of the utility model, it needs to be explained that the directions or position relations indicated by the terms "inner", "outer", "upper", "lower", "horizontal" and the like are based on the directions or position relations shown in the drawings, or the directions or position relations in which the utility model product is usually placed during use, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection", "installation" and "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be connected inside two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0034] Some embodiments of the utility model will be described in detail below with reference to the drawings. The features in the following examples can be combined with each other without conflict.

[0035] First embodiment

[0036] Please refer to Figure 1 The utility model embodiment provides a bar pin type sand mill 100 for grinding materials. It can effectively reduce the rotational resistance of the stirring bar pin 120, improve the rotational speed, improve the mixing degree of the materials, and is suitable for batch production of products.

[0037] The bar pin type sand mill 100 comprises a driving shaft 110, a stirring bar pin 120, an outer cylinder 130 and a driving mechanism (not shown in the figure). The driving mechanism is connected with the driving shaft 110, the driving shaft 110 is rotatably installed in the outer cylinder 130 and coaxially arranged with the outer cylinder 130, and the driving mechanism is used for driving the driving shaft 110 to rotate relative to the outer cylinder 130. The stirring bar pin 120 is connected to the peripheral surface of the driving shaft 110 and is arranged in the radial direction of the driving shaft 110, and the driving shaft 110 is used for driving the friction medium and the materials to move in the outer cylinder 130 under the action of the driving mechanism through the stirring bar pin 120. In this process, the grinding function of the materials is realized through the shearing force and the collision force between the friction media.

[0038] Please refer to Figures 2 to 5 ( Figures 2 to 5 The arrows in the figure indicate the direction of flow), it is worth noting that the cross section of the stirring rod pin 120 is non-circular, that is, the stirring rod pin 120 is non-cylindrical, and the stirring rod pin 120 is provided with a flow guide surface 121 along its length direction, which is used to guide the flow of the material and the friction medium during the rotation of the stirring rod pin 120 driven by the driving shaft 110, so that the material is mixed in order. Specifically, under the guidance of the flow guide surface 121, the stirring rod pin 120 can move the material and the friction medium by a smaller rotating force, and correspondingly, the stirring rod pin 120 receives a smaller reaction force from the material and the friction medium, thereby effectively reducing the rotational resistance of the stirring rod pin 120, increasing the rotational speed, increasing the shear force of the friction medium, and improving the mixing degree of the material, which is suitable for the production of products.

[0039] Preferably, the number of flow guide surfaces 121 is two, and the two flow guide surfaces 121 are oppositely arranged on both sides of the stirring rod pin 120, which is used to guide the flow of the material and the friction medium in two directions, so that the material and the friction medium can simultaneously leave the stirring rod pin 120 from the two flow guide surfaces 121, and the two flow guide surfaces 121 work together to further improve the flow guiding effect and improve the mixing degree and uniformity of the material.

[0040] Please refer to Figure 2 In an alternative embodiment, the cross section of the stirring rod pin 120 is square, and the flow guide surface 121 is a plane, at this time the diagonal of the square of the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the two flow guide surfaces 121 are respectively located on two adjacent sides of the square of the stirring rod pin 120, and the two flow guide surfaces 121 simultaneously guide the flow of the material and the friction medium.

[0041] Please refer to Figure 3 In an alternative embodiment, the cross section of the stirring rod pin 120 is triangular, and the flow guide surface 121 is a plane, at this time the base of the triangle of the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the two flow guide surfaces 121 are respectively located on two sides of the triangle of the stirring rod pin 120, and the two flow guide surfaces 121 simultaneously guide the flow of the material and the friction medium.

[0042] Please refer to Figure 4 In an alternative embodiment, the cross section of the stirring rod pin 120 is square, and the flow guide surface 121 is an inwardly concave arc surface, at this time the diagonal of the square of the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the two flow guide surfaces 121 are respectively located on two adjacent sides of the square of the stirring rod pin 120 and are arranged inwardly concave, and the two flow guide surfaces 121 simultaneously guide the flow of the material and the friction medium.

[0043] Please refer to Figure 5 In an optional embodiment, the cross section of the stirring rod pin 120 is triangular, and the flow guide surface 121 is concave. In this case, the bottom of the triangle formed by the stirring rod pin 120 is parallel to the axis of the drive shaft 110, and the two flow guide surfaces 121 are located on the two sides of the triangle formed by the stirring rod pin 120 and are concave inward. The two flow guide surfaces 121 guide the material and the friction medium at the same time.

[0044] In this embodiment, the friction medium is zirconium beads, but it is not limited to this. In other embodiments, the friction medium can also be glass beads, and the type of friction medium is not limited.

[0045] It should be noted that the number of stirring rod pins 120 is multiple, and the multiple stirring rod pins 120 are arranged on the circumferential surface of the drive shaft 110 in a spaced manner. The multiple stirring rod pins 120 work together to simultaneously drive the friction medium and the material to move in the outer cylinder 130, thereby improving the stirring efficiency and thus improving the grinding efficiency.

[0046] Preferably, the multiple stirring rod pins 120 are divided into multiple groups. The multiple stirring rod pins 120 in each group are arranged in parallel and spaced along the axial direction of the drive shaft 110. The multiple groups of stirring rod pins 120 are arranged in sequence along the circumferential direction of the drive shaft 110. Adjacent two groups of stirring rod pins 120 are arranged in a staggered manner in the axial direction of the drive shaft 110. One group of stirring rod pins 120 is used to guide the material and the friction medium to the adjacent group of stirring rod pins 120, and then to the next adjacent group of stirring rod pins 120. This alternating cycle realizes the rapid mixing of the material and improves the mixing degree of the material.

[0047] In this embodiment, the multiple groups of stirring rod pins 120 have two layout forms. The first group, the third group, the fifth group, and the like are single groups of stirring rod pins 120, which adopt the first layout form. The second group, the fourth group, the sixth group, and the like are double groups of stirring rod pins 120, which adopt the second layout form. The multiple stirring rod pins 120 in the first layout form are arranged in a staggered manner in the axial direction of the drive shaft 110 with the multiple stirring rod pins 120 in the second layout form. However, it is not limited to this. In other embodiments, the multiple groups of stirring rod pins 120 can have three layout forms or four layout forms, and the layout form of the multiple groups of stirring rod pins 120 is not limited.

[0048] Preferably, the surface of the stirring rod pin 120 is densely provided with multiple protrusions (not shown in the figure). The protrusions can disturb the material and the friction medium to prevent them from forming a laminar flow around the outer cylinder 130 at a high circumferential speed, thereby improving the shear force of the friction medium during movement and enhancing the grinding effect.

[0049] Preferably, the distance between the end of the stirring rod pin 120 away from the drive shaft 110 and the inner wall of the outer cylinder 130 is 1.5mm-2mm. If the distance between the end of the stirring rod pin 120 away from the drive shaft 110 and the inner wall of the outer cylinder 130 is too large, it will cause excessive flow resistance in the outer cylinder 130, increasing the equipment load. If the distance between the end of the stirring rod pin 120 away from the drive shaft 110 and the inner wall of the outer cylinder 130 is too small, it will cause the friction medium to get stuck between the stirring rod pin 120 and the outer cylinder 130, leading to equipment failure.

[0050] The rod-pin type sand mill 100 provided in this embodiment of the utility model has a stirring rod pin 120 connected to the circumferential surface of a drive shaft 110 and extending radially along the drive shaft 110. The cross-section of the stirring rod pin 120 is non-circular, and a guide surface 121 is provided along its length direction. The guide surface 121 is used to guide the material and friction medium during the rotation of the stirring rod pin 120 driven by the drive shaft 110. Compared with the prior art, the rod-pin type sand mill 100 provided by this utility model, due to the use of the stirring rod pin 120 connected to the drive shaft 110 and the guide surface 121 provided on the stirring rod pin 120, can effectively reduce the rotational resistance of the stirring rod pin 120, increase the rotational speed, and improve the material mixing degree, making it suitable for mass production of products.

[0051] Second Embodiment

[0052] Please refer to the reference. Figures 6 to 9 ( Figures 6 to 9 (The arrows in the figure indicate the direction of flow). This utility model embodiment provides a rod pin type sand mill 100. Compared with the first embodiment, the difference in this embodiment is that the shape of the stirring rod pin 120 is different.

[0053] In this embodiment, there is one flow guiding surface 121. The flow guiding surface 121 is disposed on one side of the stirring rod pin 120. The stirring rod pin 120 is used to guide the material and friction medium in one direction so that the material and friction medium can leave the stirring rod pin 120 through a single flow guiding surface 121. This can also improve the flow guiding effect, improve the mixing degree of the material and the uniformity of the mixing.

[0054] Please refer to Figure 6 In an optional embodiment, the cross-section of the stirring rod pin 120 is a triangle with a large area, and the guide surface 121 is a plane. In this case, the perpendicular bisector of the triangle formed by the stirring rod pin 120 is parallel to the axis of the drive shaft 110. The guide surface 121 is located on the upper side of the triangle formed by the stirring rod pin 120. The guide surface 121 is used to guide the material and friction medium.

[0055] Please refer to Figure 7In an alternative embodiment, the cross section of the stirring rod pin 120 is a small-area triangle, and the flow guide surface 121 is a plane, at this time, the base of the triangle formed by the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the flow guide surface 121 is located at the hypotenuse of the triangle formed by the stirring rod pin 120, and the flow guide surface 121 is used for guiding the material and the friction medium.

[0056] Please refer to Figure 8 In an alternative embodiment, the cross section of the stirring rod pin 120 is a large-area triangle, and the flow guide surface 121 is a concave arc surface, at this time, the median of the triangle formed by the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the flow guide surface 121 is located at the upper side of the triangle formed by the stirring rod pin 120, and the flow guide surface 121 is used for guiding the material and the friction medium.

[0057] Please refer to Figure 9 In an alternative embodiment, the cross section of the stirring rod pin 120 is a small-area triangle, and the flow guide surface 121 is a concave arc surface, at this time, the base of the triangle formed by the stirring rod pin 120 is arranged parallel to the axis of the driving shaft 110, and the flow guide surface 121 is located at the hypotenuse of the triangle formed by the stirring rod pin 120, and the flow guide surface 121 is used for guiding the material and the friction medium.

[0058] The beneficial effects of the rod pin type sand mill 100 provided by the embodiment of the present application are the same as those of the first embodiment, and will not be repeated here.

[0059] The above is only a preferred embodiment of the present application, and is not used to limit the present application. 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. A rod-pin type sand mill, characterized in that, It includes a drive shaft and a stirring rod pin. The stirring rod pin is connected to the circumferential surface of the drive shaft and extends radially along the drive shaft. The cross-section of the stirring rod pin is non-circular. The stirring rod pin has a guide surface along its length direction. The guide surface is used to guide the material and friction medium during the rotation of the stirring rod pin driven by the drive shaft.

2. The rod-pin type sand mill according to claim 1, characterized in that, The number of the flow guiding surface is one, and the stirring rod pin is used to guide the material and friction medium in a one-way manner.

3. The rod-pin type sand mill according to claim 1, characterized in that, The number of the flow guiding surfaces is two, and the two flow guiding surfaces are arranged opposite to each other on both sides of the stirring rod pin. The stirring rod pin is used to guide the material and the friction medium in both directions.

4. The rod-pin type sand mill according to claim 1, characterized in that, The guiding surface is either a concave arc surface or a plane.

5. The rod-pin type sand mill according to claim 1, characterized in that, The cross-section of the stirring rod pin is square or triangular.

6. The pin-type sand mill according to any one of claims 1-5, characterized in that, The number of stirring rod pins is multiple, and the multiple stirring rod pins are spaced apart on the circumferential surface of the drive shaft.

7. The rod-pin type sand mill according to claim 6, characterized in that, The multiple stirring rod pins are divided into multiple groups. In each group, multiple stirring rod pins are arranged parallel to each other along the axial direction of the drive shaft. The multiple groups of stirring rod pins are arranged sequentially along the circumference of the drive shaft. Adjacent groups of stirring rod pins are staggered in the axial direction of the drive shaft. One group of stirring rod pins is used to guide the material and friction medium to the adjacent group of stirring rod pins.

8. The pin-type sand mill according to any one of claims 1-5, characterized in that, The surface of the stirring rod pin is densely covered with multiple protrusions.

9. The pin-type sand mill according to any one of claims 1-5, characterized in that, The pin-type sand mill also includes an outer cylinder, and the drive shaft is rotatably installed inside the outer cylinder and coaxially arranged with the outer cylinder.

10. The rod-pin type sand mill according to claim 9, characterized in that, The distance between the end of the stirring rod pin furthest from the drive shaft and the inner wall of the outer cylinder is 1.5mm-2mm.

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