Grinding assembly for energy-saving sand mill

Abstract

The invention relates to an energy-saving grinding assembly for a sand mill, the energy-saving grinding assembly is used for being assembled on the sand mill to conduct graded grinding on different materials, the energy-saving grinding assembly comprises a grinding cylinder and a grinding shaft, the grinding cylinder is assembled on a rack of the sand mill, a plurality of feeding pipes are arranged on the grinding cylinder at intervals in the length direction of the grinding cylinder, the grinding shaft is an air expansion shaft, and the air expansion shaft is connected with the feeding pipes. A plurality of key bars are arranged on the surface of the grinding piece at intervals. The grinding shaft is arranged as the air expansion shaft, the air expansion shaft is used for tensioning the grinding parts, meanwhile, the grinding parts which can be distributed along the grinding shaft at intervals are arranged on the grinding shaft, and the grinding parts at different positions on the grinding shaft are selected for tensioning, so that the grinding shaft can rotate along with the grinding parts; and therefore, when the device grinds some materials convenient to grind, the grinding time can be shortened, and the electric energy consumed during grinding is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding components of sand mills, and particularly to a grinding component for an energy-saving sand mill. Background Art

[0002] In the prior art, for sand mills or ball mills, which adopt an integral fitting method, generally ball media and rod media are provided as grinding media inside, and in some cases, irregular shapes such as frustum, column balls, short round rods, etc. are used, which are called special-shaped media.

[0003] Horizontal sand mills are a kind of high-efficiency wet ultrafine grinding and dispersing machines widely used in non-metallic ore industries such as coatings, dyes, paints, inks, pharmaceuticals, magnetic powders, ferrite, photographic films, pesticides, papermaking, and cosmetics.

[0004] The sand mill grinds the material through the friction and collision of grinding media (such as zirconia beads) in the grinding cylinder. The motor drives the grinding media in the grinding chamber to rotate through a speed reducer. The grinding media rotates and frictions the material accordingly, so that the material is ground and mixed to achieve the required processing effect. During the grinding process, strong collision, friction, and shearing actions occur between the material and the grinding media, so as to achieve the purpose of accelerating the grinding of fine particles and dispersing agglomerates.

[0005] During the process of grinding materials by the existing sand mills, due to the different sizes of different material particles, in order to deal with different material particles, the grinding cylinder (grinding part) is generally made into a grinding component with a certain length to meet the large-particle materials. When it comes to small-particle materials, the materials can be ground to the expected effect without long-time work during grinding. At this time, the travel and the number of rotations of the materials in the grinding component are fixed. When the grinding component rotates, there is more unnecessary frictional resistance between the grinding media, the grinding part, and the materials, thus causing unnecessary waste of electric energy. Summary of the Invention

[0006] In order to solve the above technical problems, the purpose of the present invention is to provide a grinding component for a sand mill that can select the grinding travel of materials according to the materials with different particle sizes to achieve an energy-saving effect.

[0007] In order to achieve the above purpose, the technical solution of the present invention is as follows: A grinding component for an energy-saving sand mill, which is used to be assembled on a sand mill to perform classification grinding on different materials, includes: A grinding cylinder, the grinding cylinder is assembled on the frame of the sand mill, and a plurality of feed pipes are arranged at intervals along the length direction of the grinding cylinder; A grinding shaft, the grinding shaft being an air-expanding shaft. A plurality of key bars are arranged at intervals along the surface of the grinding shaft. One end of the grinding shaft is rotatably assembled on the inner wall of the grinding cylinder and is connected to an air pump, and the other end extends outside the grinding cylinder and is connected to the drive motor of the sand mill; A plurality of grinding members, the plurality of grinding members are sleeved on the grinding shaft at intervals along the length direction of the grinding shaft. A ratchet and pawl structure is arranged between the plurality of grinding members. A clamping groove for accommodating the key bar is formed on the side wall of one side of the plurality of grinding members close to the grinding shaft.

[0008] The beneficial effects of the present invention are as follows: By providing a grinding shaft that is an air-expanding shaft and using the air-expanding shaft to tension the grinding members, and at the same time arranging a plurality of grinding members that can be distributed at intervals along the grinding shaft on the grinding shaft, by selecting the grinding members at different positions on the grinding shaft for tensioning, enabling it to rotate along with the grinding members, so that when the device grinds some materials that are easy to grind, the grinding time can be reduced, and thus the electric energy consumed during grinding is reduced.

[0009] On the basis of the above technical solutions, the present invention can be further improved as follows.

[0010] Furthermore, the feed pipe is arranged above the grinding member, and the plurality of feed pipes are arranged in one-to-one correspondence with the grinding members.

[0011] By adopting the above scheme, the plurality of feed pipes are arranged in one-to-one correspondence with the grinding members, so that the device can select different feed pipes for feeding according to the actual required grinding intensity of the material, and then select the grinding stroke.

[0012] Furthermore, the grinding member is a tubular member, and a plurality of grinding sheets are arranged at intervals along the length direction of the outer part of the grinding member.

[0013] By adopting the above scheme, by arranging the grinding sheets outside the grinding member, the grinding member can cooperate with the grinding medium to grind the material, enabling the device to grind the material and refine the material.

[0014] Furthermore, the ratchet and pawl structure includes: an annular groove and a clamping pin. The annular groove is concentrically arranged at one end of the grinding member. A plurality of pawls are arranged at intervals along the circumferential direction of the annular groove inside the annular groove. The clamping pin is rotatably assembled at the other end of the grinding member, and the clamping pin is used to be adapted to the pawls inside the adjacent annular groove, so that two adjacent grinding members can rotate relatively unidirectionally.

[0015] By adopting the above scheme and using a ratchet and pawl structure, relative rotation in one direction between two adjacent grinding members can be achieved. After the tension of the grinding shaft is released, the grinding member at the front end along the discharging direction will not rotate following the rotation of the grinding shaft, thus achieving an energy-saving effect. Among the grinding members that rotate together with the grinding shaft, through the ratchet and pawl structure, it can be ensured that even if the tension effect between the grinding member and the grinding shaft becomes loose, the loosened grinding member can still rotate following the grinding shaft through the mutual engagement between two adjacent grinding members.

[0016] Further, a discharging pipe is eccentrically arranged at one end of the grinding cylinder, and the discharging pipe is communicated with the grinding cylinder.

[0017] By adopting the above scheme, after the material is ground, the material can be smoothly discharged from the inside of the grinding cylinder.

[0018] Further, a stirring structure is also arranged inside the feeding pipe. A plurality of the stirring structures are correspondingly arranged above the grinding members, and the stirring structure can be driven to move when the grinding member rotates.

[0019] By adopting the above scheme, a stirring structure is arranged inside the feeding pipe. After the material enters the stirring structure, with the rotation of the grinding member, the stirring structure can be driven to move, thereby stirring the material entering the feeding pipe.

[0020] Further, the stirring structure includes: An elastic rope assembly, which is horizontally arranged on the inner wall of the feeding pipe; A stirring rod, which is vertically arranged. A protrusion is arranged on the grinding member below the stirring rod. One end of the stirring rod is fixedly assembled on the elastic rope assembly, and the other end extends downward to the protrusion and contacts the protrusion.

[0021] By adopting the above scheme, using the stirring rod that can move to stir the material, after the material enters the feeding pipe, the continuously deflecting stirring rod can stir the material, so that the device can pre-disperse the material and avoid congestion of the material in the feeding pipe due to caking.

[0022] Further, the elastic rope assembly includes: A first elastic rope, one end of which is fixedly connected to one inner wall side of the feeding pipe, and the other end is fixedly connected to one end of the stirring rod; A second elastic rope, one end of which is fixedly connected to the other inner wall side of the feeding pipe, and the other end is fixedly connected to one end of the stirring rod. The length of the second elastic rope is greater than that of the first elastic rope.

[0023] By adopting the above technical solution, by setting two first elastic ropes with different lengths and connecting the stirring rod with the ends of the two elastic ropes close to each other, the stirring rod can be deflected when it is collided by the protrusion, thereby facilitating the pre-dispersion of the materials by the stirring rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic plan view in an embodiment of the present invention; Figure 2 is a front view of the ratchet and pawl structure in an embodiment of the present invention; Figure 3 is a schematic plan view of the ratchet and pawl structure in an embodiment of the present invention; Figure 4 is a schematic plan view of the elastic rope assembly in an embodiment of the present invention.

[0025] In the drawings, the list of components represented by each label is as follows: 1, grinding cylinder; 11, feed pipe; 111, stirring structure; 1111, elastic rope assembly; 1112, stirring rod; 1113, first elastic rope; 1114, second elastic rope; 2, grinding shaft; 21, key bar; 3, grinding member; 31, ratchet and pawl structure; 311, annular groove; 3111, ratchet teeth; 312, retaining pin; 32, keyway; 33, grinding disc; 34, protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] Embodiment As Figures 1-4 shown, a grinding assembly for an energy-saving sand mill is used for assembling on a sand mill to perform classification grinding on different materials, and includes: a grinding cylinder 1 and a grinding shaft 2. The grinding cylinder 1 is assembled on the frame of the sand mill. A plurality of feed pipes 11 are arranged at intervals along the length direction of the grinding cylinder 1. The grinding shaft 2 is an air-expansion shaft. A plurality of key bars 21 are arranged at intervals along the surface of the grinding member 3. One end of the grinding shaft 2 is rotatably assembled on the inner wall of the grinding cylinder 1 and is connected to an air pump, and the other end extends outside the grinding cylinder 1 and is connected to the drive motor of the sand mill; A plurality of grinding members 3 are sleeved on the grinding shaft 2 at intervals along the length direction of the grinding shaft 2. A ratchet and pawl structure 31 is arranged between the plurality of grinding members 3. Keyways 32 for accommodating the key bars 21 are formed on the side walls of the plurality of grinding members 3 close to the grinding shaft 2; The working principle is as follows: When grinding large-particle materials, the materials can be put into the feed pipe 11 at the front end in the discharge direction. The air shaft is tightened by an air pump to tension the grinding member 3 located below the feed pipe 11. At the same time, the drive motor inside the sand mill is started, and the drive motor drives the grinding shaft 2 to rotate. The grinding shaft 2 can drive the grinding member 3 to rotate, and then cooperate with the grinding medium to grind the materials. At this time, the device is in the high-power output mode; When grinding small-particle materials, the feed pipe 11 located in the length direction of the grinding shaft 2 is selected according to the particle size of the materials. The smaller the particles, the closer the feed pipe 11 for putting the materials is to the discharge pipe. At the same time, the grinding member 3 located below the feed pipe 11 for putting the materials is tensioned, so as to realize the grinding of small-particle materials in the low-power mode.

[0028] The above technical solution can be achieved by setting the grinding shaft 2 as an air shaft, using the air shaft to tension the grinding member 3, and at the same time arranging a plurality of grinding members 3 on the grinding shaft 2 that can be spaced along the grinding shaft 2. By selecting different positions of the grinding members 3 on the grinding shaft 2 for tensioning, it can follow the rotation of the grinding member 3. Furthermore, when the device grinds some materials that are easy to grind, the grinding time can be reduced, and thus the electric energy consumed during grinding can be reduced.

[0029] Preferably, the feed pipe 11 is arranged above the grinding member 3, and a plurality of the feed pipes 11 are arranged in one-to-one correspondence with the grinding member 3; The above technical solution can be achieved by adopting the above scheme, arranging the plurality of feed pipes 11 in one-to-one correspondence with the grinding member 3, so that the device can select different positions of the feed pipes 11 for feeding according to the actual required grinding intensity of the materials, and then select the grinding stroke.

[0030] Preferably, the grinding member 3 is a tubular member, and a plurality of grinding plates 33 are arranged at intervals along the length direction of the outer part of the grinding member 3; The above technical solution can be achieved by adopting the above scheme. By arranging the grinding member 3 outside the grinding member 3, the grinding member 3 can cooperate with the grinding medium to grind the materials, so that the device can grind the materials and refine the materials.

[0031] Preferably, the ratchet and pawl structure 31 includes: an annular groove 311 and a latch pin 312. The annular groove 311 is concentrically arranged at one end of the grinding member 3. A plurality of ratchet teeth 3111 are arranged at intervals along the circumferential direction of the annular groove 311. The latch pin 312 is rotatably assembled at the other end of the grinding member 3. The latch pin 312 is used to be adapted to the ratchet teeth 3111 inside the adjacent annular groove 311, so that two adjacent grinding members 3 can rotate relative to each other unidirectionally.

[0032] The above technical solution can adopt a ratchet and ratchet tooth structure 31, so that two adjacent grinding members 3 can rotate relative to each other unidirectionally. After the grinding member 3 at the front end along the discharging direction is not tensioned by the grinding shaft 2, it will not rotate following the rotation of the grinding shaft 2, thus achieving an energy-saving effect. Among the grinding members 3 that rotate together with the grinding shaft 2, through the ratchet and ratchet tooth structure 31, it can be ensured that even if the tensioning effect between the grinding member 3 and the grinding shaft 2 becomes loose, through the mutual engagement between two adjacent grinding members 3, the loosened grinding member 3 can still rotate following the grinding shaft 2.

[0033] Preferably, a discharge pipe is eccentrically arranged at one end of the grinding cylinder 1, and the discharge pipe is communicated with the grinding cylinder 1.

[0034] The above technical solution can enable the material to be smoothly discharged from the inside of the grinding cylinder 1 after the material grinding is completed; Preferably, a stirring structure 111 is further arranged inside the feed pipe 11. A plurality of the stirring structures 111 are arranged corresponding to the grinding members 3 one by one above the grinding members 3, and the stirring structure 111 can be driven to move when the grinding member 3 rotates.

[0035] By adopting the above solution, a stirring structure 111 is arranged inside the feed pipe 11. After the material enters the inside of the stirring structure 111, with the rotation of the grinding member 3, the stirring structure 111 can be driven to move, and then the material entering the inside of the feed pipe 11 can be stirred.

[0036] Preferably, the stirring structure 111 includes: an elastic rope assembly 1111 and a stirring rod 1112. The elastic rope assembly 1111 is horizontally arranged on the inner wall of the feed pipe 11. The stirring rod 1112 is vertically arranged. A protrusion 34 is arranged on the grinding member 3 below the stirring rod 1112. One end of the stirring rod 1112 is fixedly assembled on the elastic rope assembly 1111, and the other end extends downward to the protrusion 34 and is in contact with the protrusion 34.

[0037] By adopting the above solution, using the stirring rod 1112 that can move to stir the material, after the material enters the inside of the feed pipe 11, the continuously deflecting stirring rod 1112 can stir the material, so that the device can pre-disperse the material and avoid the material from being congested inside the feed pipe 11 due to caking.

[0038] Preferably, the elastic rope assembly 1111 includes: a first elastic rope 1113 and a second elastic rope 1114, wherein one end of the first elastic rope 1113 is connected and fixed to the inner wall of one side of the feeding pipe 11, and the other end is connected and fixed to one end of the stirring rod 1112, and one end of the second elastic rope 1114 is connected and fixed to the inner wall of the other side of the feeding pipe 11, and the other end is connected and fixed to the stirring end, and the length of the second elastic rope 1114 is greater than that of the first elastic rope 1113.

[0039] The above-mentioned technical scheme can be achieved by adopting the above-mentioned technical scheme, by setting two first elastic ropes 1113 of different lengths, and connecting the stirring rod 1112 with one end of the two elastic ropes close to each other, so that the stirring rod 1112 can be deflected when hit by the protrusion 34, thereby facilitating the stirring rod 1112 to pre-disperse the material.

[0040] The working principle is as follows: when grinding large-particle materials, the materials can be put into the feed pipe 11 located at the front end of the discharge direction, and the air pump is used to make the air expansion shaft tighten the grinding piece 3 located below the feed pipe 11, and at the same time, the driving motor inside the sand mill is turned on, and the driving motor drives the grinding shaft 2 to rotate, and the grinding shaft 2 can drive the grinding piece 3 to rotate, and then cooperate with the grinding medium to grind the materials. At this time, the device is in high-power output mode; When grinding small-particle materials, the feed pipe 11 located in the length direction of the grinding shaft 2 is selected according to the particles of the materials. The smaller the particles, the closer the feed pipe 11 for feeding the materials is to the discharge pipe. At the same time, the grinding member 3 located below the feed pipe 11 for feeding the materials is tensioned, thereby achieving low-power mode grinding of small-particle materials. In addition, when the grinding shaft 2 rotates, the grinding shaft 2 can drive the convex point to rotate, and the convex point reciprocates when rotating to rotate the stirring rod 1112 in the feed pipe 11, so that the material in the feed pipe 11 can be pre-dispersed and stirred to avoid congestion of the material in the feed pipe 11.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An energy-saving sand mill grinding assembly, used for assembling on a sand mill to grind different kinds of materials in different grades, characterized in that: include: A grinding cylinder (1), the grinding cylinder (1) being mounted on a frame of the sand mill, and the grinding cylinder (1) being provided with a plurality of feed pipes (11) spaced apart along its length direction; A grinding shaft (2), the grinding shaft (2) being an air expansion shaft, the grinding piece (3) being provided with a plurality of key strips (21) at intervals along its surface, one end of the grinding shaft (2) being rotatably mounted on the inner wall of the grinding cylinder (1) and being connected to an air pump, and the other end of the grinding shaft (2) extending to the outside of the grinding cylinder (1) and being connected to a driving motor of a sand mill; A plurality of grinding pieces (3) are sleeved on the grinding shaft (2) at intervals along the length direction of the grinding shaft (2), a ratchet tooth structure (31) is provided between the plurality of grinding pieces (3), and a slot (32) capable of accommodating a key bar (21) is provided on a side wall of the plurality of grinding pieces (3) close to the grinding shaft (2).

2. The energy-saving sand mill grinding assembly according to claim 1, characterized in that: The feed pipe (11) is arranged above the grinding piece (3), and a plurality of the feed pipes (11) are arranged in one-to-one correspondence with the grinding piece (3).

3. The energy-saving sand mill grinding assembly according to claim 2, characterized in that: The grinding piece (3) is a tubular component, and a plurality of grinding sheets (33) are arranged at intervals on the outside of the grinding piece (3) along its length direction.

4. The energy-saving sand mill grinding assembly according to claim 3, characterized in that: The ratchet wheel and ratchet tooth structure (31) comprises: an annular groove (311), the annular groove (311) being concentrically arranged on one end of the grinding member (3), the annular groove (311) being provided with ratchet teeth (3111) spaced apart along the circumference of the annular groove (311); A clamping pin (312) is rotatably mounted on the other end of the grinding member (3). The clamping pin (312) is used to match the ratchet teeth (3111) inside the adjacent annular groove (311), so that two adjacent grinding members (3) can rotate relative to each other in one direction.

5. The energy-saving sand mill grinding assembly according to claim 4, characterized in that: A discharge pipe is eccentrically arranged at one end of the grinding cylinder (1), and the discharge pipe is in communication with the grinding cylinder (1).

6. The energy-saving sand mill grinding assembly according to claim 5, characterized in that: A stirring structure (111) is also provided inside the feed pipe (11), and a plurality of the stirring structures (111) are arranged one by one above the grinding element (3), and when the grinding element (3) rotates, the stirring structures (111) can be driven to move.

7. The energy-saving grinding assembly for a sand mill according to claim 6, characterized in that: The stirring structure (111) comprises: An elastic rope assembly (1111), wherein the elastic rope assembly (1111) is horizontally arranged on the inner wall of the feeding pipe (11); A stirring rod (1112) is vertically arranged, and a protrusion (34) is arranged on the grinding member (3) below the stirring rod (1112). One end of the stirring rod (1112) is fixedly mounted on the elastic rope assembly (1111), and the other end extends downward to the protrusion (34) and contacts the protrusion (34).

8. The energy-saving grinding assembly for a sand mill according to claim 7, characterized in that: The elastic cord assembly (1111) comprises: a first elastic rope (1113), one end of the first elastic rope (1113) being connected and fixed to an inner wall of one side of the feeding pipe (11), and the other end of the first elastic rope (1113) being connected and fixed to one end of the stirring rod (1112); A second elastic rope (1114), one end of the second elastic rope (1114) is connected and fixed to the inner wall of the other side of the feeding pipe (11), and the other end is connected and fixed to the stirring end, and the length of the second elastic rope (1114) is greater than that of the first elastic rope (1113).

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