A grinding rod and rod adding machine suitable for siliceous rocks

Abstract

This utility model belongs to the field of rod mill technology and discloses a grinding rod suitable for siliceous rocks and its rod feeding machine. The grinding rod includes a grinding rod body, both ends of which are end surfaces with smooth transition surfaces. The radius of curvature of the smooth transition surfaces gradually increases outward along the axial direction, and the maximum outer diameter of the end is equal to the outer diameter of the grinding rod body. The radius of the grinding rod body gradually decreases from one end to the other along its axial direction. The end of the grinding rod body has a "hemispherical" structure, where the radius of one end is equal to the radius of one end of the grinding rod body, and the radius of the other end is equal to the radius of the other end of the grinding rod body, and the centers of the two ends are located on the axis of the grinding rod body. This solution reduces the right-angle gap between the end of the grinding rod and the lid and bottom of the grinding tank by making the two ends of the grinding rod body with smooth transition surfaces and the radius of curvature gradually increasing outward along the axial direction. This utility model solves the problem of rock fragments getting stuck in the gap between the grinding rod and the bottom and lid of the grinding tank.

Description

Technical Field

[0001] This solution belongs to the field of rod mill technology, specifically involving a grinding rod suitable for siliceous rocks and its rod feeding machine. Background Technology

[0002] Siliceous rock is a type of rock formed by strong metamorphism with quartz as its main component (containing a high quartz content). Its internal joints are mostly developed in two groups and have a platy structure. The dense structure brought about by metamorphism makes it strong in shear resistance.

[0003] Due to its high quartz content, resulting in hardness, the structural characteristics of its flaky joints that easily produce granules, and its strong shear resistance, grinding requires equipment that can provide stable shear and impact forces. Rod mills, through the relative movement of the grinding rods and the jar, can create a continuous and uniform grinding effect on these rocks. Compared to traditional fine grinding jars where gaps exist between the grinding rods and the bottom of the jar lid, which can easily cause flaky rock particles to get stuck on the grinding rods, the structure of rod mills is more adaptable to the grinding needs of siliceous rocks, reducing the risk of rock flakes getting stuck and ensuring the stable progress of the grinding process. Therefore, rod mills are suitable for grinding siliceous rocks.

[0004] A rod mill for mica preparation is disclosed in the existing publication (announcement) number CN115382629A, which includes a fixed connecting end. A grinding liner is fixedly installed in the middle of the inner sidewall of the fixed connecting end. A quick discharge hole is opened on the surface of the grinding liner. A conveying chamber is movably sleeved on the outside of the grinding liner. An air suction pipe is fixedly installed on the bottom end surface of the conveying chamber. An air suction pump is fixedly installed at one end of the air suction pipe. A baffle plate is fixedly installed in the middle of the inner cavity of the air suction pipe. A grinding rod is placed in the inner cavity of the grinding liner. Fixed connecting plates are fixedly installed at both ends of the grinding rod. A buffer plate is movably installed on the inner sidewall edge of the fixed connecting plate. Tensioning connectors are fixedly installed on both sides of the buffer plate. Sealing partitions are fixedly installed on both sides of the middle of the inner cavity of the conveying chamber. The grinding rod is in the shape of a round rod, and the diameter of the grinding rod gradually decreases from large to small. The two ends of the grinding rod are fixedly connected to the center of the inner surface of the fixed connecting plate.

[0005] For example, in the aforementioned rod mill, the grinding rod is cylindrical with a flat end face, and generally has a gap of less than 1 cm between it and the bottom and lid of the grinding jar. This is originally intended to ensure the rotation of the grinding rod and improve grinding efficiency. However, when finely grinding highly metamorphosed siliceous rocks, because the grinding jar is placed horizontally on the rollers, the rock fragments are affected by centrifugal force and move towards the bottom and lid of the jar. Some rock fragments thus get stuck in the gap between the top of the rod and the lid, causing the grinding rod to become stuck and unable to continue grinding the rock fragments. Utility Model Content

[0006] The purpose of this solution is to provide a grinding rod suitable for siliceous rocks to solve the problem of rock fragments getting stuck in the gaps between the grinding rod and the bottom and lid of the grinding jar.

[0007] To achieve the above objectives, this solution provides a grinding rod suitable for siliceous rocks, comprising a grinding rod body, both ends of which are end surfaces with smooth transition surfaces. The radius of curvature of the smooth transition surfaces gradually increases outward along the axial direction, and the maximum outer diameter of the end surface is equal to the outer diameter of the grinding rod body. The radius of the grinding rod body gradually decreases from one end to the other along its axial direction.

[0008] The principle and effect of this solution are as follows: by making the two ends of the grinding rod body smooth transition surfaces and gradually increasing the radius of curvature outward along the axial direction, the ends of the smooth curved surfaces can reduce the right-angle gap between the end of the traditional grinding rod and the can lid and the bottom of the can. When the siliceous rock fragments are moved towards the bottom and lid of the can by centrifugal force, the rock fragments can slide along the arc surface instead of getting stuck in the gap.

[0009] Furthermore, the end of the grinding rod body is a "hemispherical" structure, wherein the radius of one end is equal to the radius of one end of the grinding rod body, and the radius of the other end is equal to the radius of the other end of the grinding rod body, and the center of both ends is located on the axis of the grinding rod body.

[0010] The principle and effect of this solution are as follows: the smooth hemispherical surface avoids the right-angle gap between the end of the traditional grinding rod and the bottom and cover of the grinding jar. When the siliceous rock fragments move towards the bottom and cover of the jar under centrifugal force, the hemispherical surface can guide the rock fragments to slide along the curved surface without getting stuck.

[0011] Furthermore, the grinding rod body has a pyramidal structure.

[0012] The principle and effect of this scheme are as follows: the grinding rod body is a pyramidal structure, which generates stronger shearing and impact on siliceous rock when rotating, thereby improving the grinding and crushing efficiency.

[0013] A grinding rod feeding machine suitable for siliceous rocks includes a grinding rod as described above, comprising a frame and a support, the support being mounted on the frame, and a lifting assembly for lifting the grinding rod body being mounted on the support, the lifting assembly including a sleeve and a lead screw lifter, both the sleeve and the lead screw lifter being mounted on the support, the lead screw lifter being vertically arranged, and the lead screw of the lead screw lifter being fixedly connected to the top of the sleeve.

[0014] The principle and effect of this solution are as follows: by setting a bracket on the frame, the sleeve and the vertically arranged screw elevator are installed on the bracket. When the screw elevator is running under power drive, its screw can drive the sleeve to move up and down in the vertical direction. The sleeve is used to support the grinding rod, thereby driving the grinding rod to rise and fall, and finally lifting the end of the grinding rod to the position of the barrel opening of the rod mill.

[0015] Furthermore, a screw jack is provided inside the sleeve. The screw jack is horizontally positioned, and the free end of the screw jack is used to push the grinding rod body to move horizontally.

[0016] The principle and effect of this solution are as follows: after the lifting component delivers the end of the grinding rod to the mouth of the rod mill, the screw of the horizontal screw jack can extend horizontally, and its free end pushes the grinding rod body to move smoothly horizontally, thereby pushing the grinding rod into the rod mill jar.

[0017] Furthermore, the bottom of the bracket is provided with symmetrical sliders, and the top of the frame is provided with a guide rail, with the sliders slidably connected to the guide rail.

[0018] The principle and effect of this solution are as follows: by manually pushing the support through the slider and guide rail, the lifting component and sleeve are driven to move horizontally along the guide rail, thereby adjusting the relative position of the grinding rod and the opening of the rod mill, so that the grinding rod and the opening of the rod mill are aligned.

[0019] Furthermore, the bottom of the bracket is provided with a sliding cylinder, and the top of the frame is provided with two limiting blocks arranged along the length of the guide rail. A support rod is provided between the two limiting blocks, and the sliding cylinder is slidably connected to the support rod.

[0020] The principle and effect of this solution are as follows: by sliding the slide cylinder along the support rod, the bracket moves along the length of the guide rail, and the two limiting blocks can limit the sliding range of the slide cylinder and prevent the bracket from moving excessively and dislodging.

[0021] Furthermore, it also includes a clamping assembly for clamping the grinding rod body. The clamping assembly is located at one end of the sleeve and at the front end of the screw jack. The clamping assembly includes a base and a support arm. The base is fixedly connected to the sleeve. The support arm is vertically arranged, and both ends of the support arm are connected to the base by bolts. The support arm has a first clamping groove in the middle and a second clamping groove that slides on the support arm. A screw is rotatably provided at the top of the second clamping groove. The free end of the screw passes through the support arm and is connected to a handle.

[0022] The principle and effect of this solution are as follows: the first and second clamping slots in the middle of the support arm form a clamping space. Rotating the handle drives the screw to rotate, which in turn drives the second clamping slot to slide relative to the first clamping slot to adjust the clamping distance, thereby clamping or releasing the middle part of the grinding rod body and preventing the grinding rod from sliding when being lifted in the sleeve. When the grinding rod is fed into the rod mill, rotating the handle in the opposite direction drives the second clamping slot away from the first clamping slot, releasing the clamping of the grinding rod. Then, the piston rod of the screw jack extends, pushing the grinding rod into the rod mill.

[0023] Furthermore, the inner side of the support arm is provided with a sliding groove, and the second clamping groove is provided with a protrusion that cooperates with the sliding groove, and the protrusion is slidably disposed in the sliding groove.

[0024] The principle and effect of this solution are as follows: the groove is used to provide positioning and guidance for the protrusion, and to prevent it from dislodging during the movement of the second clamping groove.

[0025] Furthermore, both the first and second clamping grooves are "V" shaped structures and are symmetrically arranged, with serrations on the opposite surfaces of both the first and second clamping grooves.

[0026] The principle and effect of this solution are as follows: when the second clamping groove is driven by the screw to approach the first clamping groove, the "V" shaped structure can clamp the grinding rod with a gradually changing radius, and the serrations can increase the friction between the clamping groove and the grinding rod, thus preventing the grinding rod from sliding axially or rotating circumferentially during the lifting and pushing process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a grinding rod suitable for siliceous rocks according to the present invention. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the structure of a grinding rod suitable for siliceous rocks according to the present invention. Figure 2 ;

[0029] Figure 3 This is a schematic diagram of the structure of a grinding rod feeding machine suitable for siliceous rocks according to the present invention;

[0030] Figure 4 This is a schematic diagram of the lifting component of this utility model;

[0031] Figure 5 This is a schematic diagram of the clamping assembly of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of a rod milling machine and rod mill for use with siliceous rocks according to this utility model.

[0033] The corresponding labels in the attached drawings are named as follows: grinding rod body 1, end 11, frame 2, caster wheel 21, lifting assembly 3, sleeve 31, screw jack 32, screw lift 33, slider 34, guide rail 35, slide cylinder 36, limit block 37, support rod 38, clamping assembly 4, base 41, support arm 42, slide groove 421, first clamping groove 43, second clamping groove 44, screw 45, handle 46, bracket 5, grinding rod machine 6. Detailed Implementation

[0034] The following will describe the concept and technical effects of this utility model clearly and completely with reference to the embodiments, so as to fully understand the purpose, features and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model.

[0035] Example 1:

[0036] Please see Figure 1 and Figure 2 A grinding rod suitable for siliceous rocks includes a grinding rod body 1 made of high-chromium cast iron, capable of grinding the high hardness of siliceous rocks. Both ends of the grinding rod body 1 are end portions 11 with smooth transition surfaces. Specifically, each end portion 11 is a hemispherical structure, with the radius of the first hemispherical end portion 11 equal to the radius of the grinding rod body 1 at that end, and the radius of the second hemispherical end portion 11 equal to the radius of the grinding rod body 1 at that end. The centers of both end portions 11 are located on the axis of the grinding rod body 1. The hemispherical end portions 11 eliminate right-angle gaps between the grinding rod body 1 and the bottom or lid of the grinding machine 6, preventing jamming when siliceous rock fragments move towards the bottom or lid under centrifugal force. The grinding rod body 1 has a four-sided pyramidal structure with four edges. The cross-sectional area of ​​this pyramidal structure gradually decreases axially from one end to the other, and both ends of the pyramidal structure are smoothly connected to the hemispherical end portions 11. The edges of the four-sided pyramid structure can generate stronger shearing and impact on siliceous rocks when rotating, improving grinding and crushing efficiency. At the same time, the gradually changing cross section, combined with the hemispherical end 11, makes the gap between the grinding rod body 1 and the inner wall of the grinding jar evenly distributed along the axial direction, further reducing the probability of rock fragment aggregation.

[0037] Example 2:

[0038] This embodiment provides a rod grinding and rod feeding machine suitable for siliceous rocks. Please refer to [link / reference]. Figures 3-5 The rod-adding mechanism includes a frame 2 and a support 5. A guide rail 35, which is rectangular, extends along the length of the frame 2 at its top. The support 5 is mounted on the frame 2. Slider blocks 34 are symmetrically arranged at the bottom of the support 5, and these sliders 34 slide against the guide rail 35. Wear-resistant liners made of polytetrafluoroethylene (PTFE) are provided on the inner side of the sliders 34 to reduce the coefficient of sliding friction. A sliding cylinder 36 is also provided at the bottom of the support 5. Two limiting blocks 37, arranged along the length of the guide rail 35, are located at the top of the frame 2. A support rod 38, made of steel round rod, is welded between the two limiting blocks 37. The sliding cylinder 36 is slidably connected to the support rod 38. The limiting blocks 37 restrict the sliding range of the support 5 to prevent excessive movement.

[0039] Please continue reading. Figures 3-5The support 5 is equipped with a lifting assembly 3 for lifting the grinding rod body 1. The lifting assembly 3 includes a sleeve 31 and a screw jack 32. The inner diameter of the screw jack 32 is 5-10 mm larger than the maximum outer diameter of the grinding rod body 1, and its length is half the length of the grinding rod body 1. The screw jack 32 is a worm gear screw jack, which is vertically installed on the support 5, and the screw of the screw jack 32 is fixedly connected to the top of the sleeve 31 through a flange. When the screw jack 32 is running, the screw can drive the sleeve 31 to move up and down in the vertical direction, thereby lifting and lowering the grinding rod body 1. The sleeve 31 is equipped with a screw jack 33, which is a horizontally set screw jack. The free end of its screw is used to push the end of the grinding rod body 1. The screw jack 33 can drive its screw to extend and retract in the horizontal direction, with a extension stroke of 300-500 mm, to push the grinding rod body 1 horizontally and push it into the grinding jar from the opening of the rod mill 6.

[0040] Please continue reading. Figure 5 One end of the sleeve 31 is provided with a clamping assembly 4 for clamping the grinding rod body 1. The clamping assembly 4 is located at the front end of the screw jack 33 and includes a base 41 and a support arm 42. The base 41 is fixedly connected to the sleeve 31 by bolts. The support arm 42 is vertically arranged, and its two ends are connected to the base 41 by high-strength bolts. The support arm 42 has a first clamping groove 43 in the middle and a second clamping groove 44 that slides on the support arm 42. Both the first clamping groove 43 and the second clamping groove 44 are V-shaped structures with an included angle of 30° and are symmetrically arranged. Both of them have serrations on their opposite surfaces to enhance the friction between them and the grinding rod body 1. A screw 45 is rotatably provided at the top of the second clamping groove 44. Its free end passes through the support arm 42 and is connected to a handle 46. When the handle 46 is rotated, the screw 45 can drive the second clamping groove 44 to slide along the slide groove on the support arm 42, thereby adjusting the distance between the first clamping groove 43 and the second clamping groove 44, and thus clamping or releasing the grinding rod body 1.

[0041] The work process is as follows: Please refer to [link / reference]. Figure 6 Place the grinding rod body 1 inside the sleeve 31, and clamp the grinding rod body 1 between the first clamping groove 43 and the second clamping groove 44 by rotating the handle 46; start the screw jack 32 to drive the sleeve 31 and the grinding rod body 1 to rise, so that the end 11 of the grinding rod body 1 is aligned with the mouth of the rod mill; push the bracket 5, and slide the slider 34 along the guide rail 35 and the slide cylinder 36 along the support rod 38 to finely adjust the relative position of the grinding rod body 1 and the mouth of the mill; then, rotate the handle 46 in the opposite direction to release the grinding rod body 1 between the first clamping groove 43 and the second clamping groove 44; start the horizontal screw jack 33, and its screw will push the grinding rod body 1 to move horizontally and send it into the grinding machine 6.

[0042] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A grinding rod suitable for siliceous rocks, comprising a grinding rod body (1), characterized in that: Both ends of the grinding rod body (1) are end points (11) with smooth transition surfaces. The radius of curvature of the smooth transition surfaces gradually increases outward along the axial direction, and the maximum outer diameter of the end point (11) is equal to the outer diameter of the grinding rod body (1). The radius of the grinding rod body (1) gradually decreases from one end to the other along its axial direction.

2. A grinding rod suitable for siliceous rocks according to claim 1, characterized in that: The end (11) of the grinding rod body (1) is a "hemispherical" structure, wherein the radius of one end (11) is equal to the radius of one end of the grinding rod body, and the radius of the other end (11) is equal to the radius of the other end of the grinding rod body, and the center of the two ends (11) is located on the axis of the grinding rod body (1).

3. A grinding rod suitable for siliceous rocks according to claim 1, characterized in that: The grinding rod body (1) has a pyramidal structure.

4. A grinding rod feeding machine suitable for siliceous rocks, comprising a grinding rod suitable for siliceous rocks as described in any one of claims 1-3, comprising a frame (2) and a support (5), wherein the support (5) is disposed on the frame (2), and the support (5) is provided with a lifting assembly (3) for lifting the grinding rod body (1), wherein the lifting assembly (3) comprises a sleeve (31) and a screw jack (32), wherein the sleeve (31) and the screw jack (32) are both disposed on the support (5), the screw jack (32) is vertically arranged, and the screw of the screw jack (32) is fixedly connected to the top of the sleeve (31).

5. A rod feeding machine suitable for siliceous rocks according to claim 4, characterized in that: The sleeve (31) is equipped with a screw jack (33), which is set horizontally. The free end of the screw of the screw jack (33) is used to push the grinding rod body (1) to move horizontally.

6. A rod feeding machine suitable for siliceous rocks according to claim 4, characterized in that: The bottom of the bracket (5) is provided with symmetrical sliders (34), and the top of the frame (2) is provided with a guide rail (35). The sliders (34) and the guide rail (35) are slidably connected.

7. A rod feeding machine suitable for siliceous rocks according to claim 6, characterized in that: The bottom of the bracket (5) is provided with a slide cylinder (36), and the top of the frame (2) is provided with two limiting blocks (37) arranged along the length direction of the guide rail (35). A support rod (38) is provided between the two limiting blocks (37), and the slide cylinder (36) and the support rod (38) are slidably connected.

8. A rod feeding machine suitable for siliceous rocks according to claim 4, characterized in that: It also includes a clamping assembly (4) for clamping the grinding rod body (1). The clamping assembly (4) is located at one end of the sleeve (31) and at the front end of the screw jack (33). The clamping assembly (4) includes a base (41) and a support arm (42). The base (41) is fixedly connected to the sleeve (31). The support arm (42) is vertically arranged, and both ends of the support arm (42) are connected to the base (41) by bolts. The support arm (42) has a first clamping groove (43) in the middle. The support arm (42) has a second clamping groove (44) that slides on it. The top of the second clamping groove (44) is rotatably provided with a screw (45). The free end of the screw (45) passes through the support arm (42) and is connected to a handle (46).

9. A rod feeding machine suitable for siliceous rocks according to claim 8, characterized in that: The inner side of the support arm (42) is provided with a sliding groove (421), and the second clamping groove (44) is provided with a protrusion that cooperates with the sliding groove (421). The protrusion is slidably disposed in the sliding groove (421).

10. A rod feeding machine suitable for siliceous rocks according to claim 9, characterized in that: The first clamping groove (43) and the second clamping groove (44) are both "V" shaped structures and are symmetrically arranged. The opposite surfaces of the first clamping groove (43) and the second clamping groove (44) are provided with serrations.

Images