Rod mill sand making machine and use method thereof

Abstract

The present invention relates to the technical field of rod mill sand making machine, and discloses a rod mill sand making machine and a method for using the same, comprising a cylinder rotatably arranged between a left support and a right support, the outer wall surrounding the cylinder being provided with a first discharge hole, a second discharge hole and a third discharge hole from left to right in sequence, the first discharge hole, the second discharge hole and the third discharge hole being respectively closed by a first closing frame, a second closing frame and a third closing frame, the peripheral walls of the first closing frame, the second closing frame and the third closing frame being hollowed out and respectively fixed with a first annular filter screen, a second annular filter screen and a third annular filter screen; the material moves from left to right in the cylinder under the action of overflow and continuous feeding, and in the process of movement, the material will be discharged through the first discharge hole, the second discharge hole and the third discharge hole, so that the ground qualified material leaves the cylinder as soon as possible, reducing the phenomenon of over-crushing. The present invention is novel in design and has the advantage of being able to divert sand according to the diameter of the sand.

Description

Technical Field

[0001] The present invention relates to the technical field of rod mill sand making machines, and in particular to a rod mill sand making machine and a method for using the same. Background Art

[0002] Rod mill sand making machine is mainly used for processing and crushing ore raw materials such as feldspar, quartz, and river pebbles. It is a highly efficient and energy-saving stone crushing and sand making equipment, which saves about 50% energy compared with traditional sand making machines. When the rod mill is working, the drive device drives the cylinder to rotate, and the grinding steel rod is lifted to a certain height under the action of centrifugal force and friction, and then thrown or rolled down, which has the effects of impact, extrusion, grinding, etc. on the material in the cylinder, thereby crushing the material. With the development of technology and the in-depth use of rod mills, people have also made certain improvements to rod mills in order to improve the crushing efficiency and ensure the crushing effect:

[0003] For example, the invention patent with the Chinese patent announcement number: CN112844647B provides a high-yield rod mill, which has a cylinder, a liner plate installed on the inner wall of the cylinder, a liner plate with oblique convex strips as guide convex strips or a liner plate with oblique grooves as guide grooves, and a cylinder with multiple circles of discharge holes, and a discharge screen is attached to the discharge holes of the cylinder. The present invention guides the material to move toward the discharge end during rotation by setting oblique convex strips or grooves on the cylinder liner, thereby accelerating the speed of material movement; adding a discharge port between the traditional feed port and the discharge port, and attaching a screen to the discharge port, so that the ground qualified stone leaves the cylinder as soon as possible, reducing the phenomenon of over-crushing; dry production can avoid water treatment, thereby increasing the processing capacity of the rod mill.

[0004] In the above-mentioned rod mill, the setting of the inclined convex strips or grooves can speed up the movement of materials, and the setting of the discharge port can make the ground stones leave the cylinder as soon as possible, which greatly improves the processing capacity of the rod mill and is very worthy of promotion and use. However, in in-depth research, we found that the above-mentioned and traditional rod mills still have certain shortcomings, such as:

[0005] The above and traditional rod mills do not have the function of "dividing the sand according to the diameter of the sand". Fine sand, medium sand and coarse sand are discharged together. If they need to be used separately later, they have to be screened again, wasting time and energy;

[0006] Based on this, we propose a rod mill sand making machine and a method of using the same. Summary of the invention

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the present invention provides a rod mill sand making machine and a method for using the same, which has the advantage of being able to divert sand according to its diameter.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose of being able to divert and discharge sand according to the diameter of the sand, the present invention provides the following technical solution: a rod mill sand making machine, comprising a cylinder rotatably arranged between a left support and a right support, and an outer wall surrounding the cylinder is provided with a first discharge hole, a second discharge hole and a third discharge hole in sequence from left to right;

[0011] The first discharge hole, the second discharge hole and the third discharge hole are respectively closed by a first closed frame, a second closed frame and a third closed frame, and the peripheral walls of the first closed frame, the second closed frame and the third closed frame are hollowed out and fixedly provided with a first annular filter screen, a second annular filter screen and a third annular filter screen respectively;

[0012] A plurality of partitions are fixedly mounted on the inner walls of the first annular filter screen, the second annular filter screen and the third annular filter screen.

[0013] As a preferred technical solution of the present invention, the opening widths of the first discharge hole, the second discharge hole and the third discharge hole are gradually widened from left to right;

[0014] The mesh sizes of the first annular filter, the second annular filter and the third annular filter become coarser from left to right.

[0015] As a preferred technical solution of the present invention, the first closed frame, the second closed frame and the third closed frame are all fixedly mounted on the cylinder.

[0016] As a preferred technical solution of the present invention, the first closed frame, the second closed frame and the third closed frame are rotatably arranged in the first outer cover, the second outer cover and the third outer cover respectively, the first outer cover, the second outer cover and the third outer cover are fixed to the ground through a supporting frame, and the bottom of the first outer cover, the second outer cover and the third outer cover are all provided with a discharge port.

[0017] As a preferred technical solution of the present invention, the first discharge barrel, the second discharge barrel and the third discharge barrel are fixedly installed on the three discharge ports from left to right, respectively, and the outer walls of the first discharge barrel, the second discharge barrel and the third discharge barrel are all provided with discharge grooves, and the bottom of the discharge groove is fixedly installed with a support plate for guiding the discharge.

[0018] As a preferred technical solution of the present invention, a first filter screen is fixedly installed on the inner wall of the second lower barrel, and the bottom of the second lower barrel is connected to the first lower barrel through a first connecting pipe;

[0019] A second filter screen is fixedly mounted on the inner wall of the third lower barrel, the bottom of the third lower barrel is connected to the second lower barrel via a second connecting pipe, and the connecting point between the second connecting pipe and the second lower barrel is located above the first filter screen.

[0020] As a preferred technical solution of the present invention, the first discharge hole, the second discharge hole and the third discharge hole are all formed with arc-shaped slopes on their outward sides.

[0021] As a preferred technical solution of the present invention, a gear ring is fixedly installed on the outer wall of the cylinder, a driving gear is meshed on the outer wall of the gear ring, a driving shaft is fixedly installed at the center of the driving gear, one end of the driving shaft is connected to the output shaft of the driving motor through a reducer, and a crankshaft is fixedly installed on the other end of the driving shaft, and the crankshaft is rotatably arranged in the vertical cylinder;

[0022] A rotating sleeve is rotatably arranged on the crankshaft, a connecting rod is fixedly installed on the rotating sleeve, a piston is movably connected to the bottom end of the connecting rod, the piston is movably arranged in a plug cylinder, and the plug cylinder is fixedly installed in the vertical cylinder;

[0023] One side of the outer wall of the plug cylinder is connected to a water tank through a water inlet pipe, and the other side of the outer wall of the plug cylinder is connected to an atomizing nozzle through a water outlet pipe, and the atomizing nozzle is arranged toward the support plate.

[0024] As a preferred technical solution of the present invention, a one-way water inlet valve is provided on the water inlet pipe, and a one-way water outlet valve is provided on the water outlet pipe.

[0025] A method for using a rod mill sand making machine comprises the following steps:

[0026] S1. Materials are continuously filled into the cylinder, and the motor drives the cylinder to rotate. When the cylinder rotates, the grinding steel rod inside it rises to a certain height and is thrown down under the action of friction and centrifugal force, so that the materials are impacted and ground;

[0027] S2, the ground and crushed material is discharged through the first discharge hole, the second discharge hole and the third discharge hole under the action of overflow and continuous feeding;

[0028] S3, among the materials discharged from the first discharge hole, the second discharge hole and the third discharge hole, the materials meeting the size requirements are discharged through the first annular filter screen, the second annular filter screen and the third annular filter screen, and the materials not meeting the size requirements are returned to the cylinder body;

[0029] S4, the materials discharged through the first annular filter, the second annular filter and the third annular filter enter the first outer cover, the second outer cover and the third outer cover respectively, and then enter the first discharge barrel, the second discharge barrel and the third discharge barrel respectively through the discharge port;

[0030] S5, the materials in the first lower barrel, the second lower barrel and the third lower barrel are discharged through three discharge troughs and the support plate respectively.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the present invention provides a rod mill sand making machine, which has the following beneficial effects:

[0033] 1. In this rod mill sand making machine, the material moves from left to right in the cylinder under the action of overflow and continuous feeding. During the movement, the material will be discharged through the first discharge hole, the second discharge hole and the third discharge hole, so that the qualified ground material can leave the cylinder as soon as possible to reduce the over-crushing phenomenon.

[0034] 2. The rod mill sand making machine has the first discharge hole discharging fine sand, the second discharge hole discharging medium sand and fine sand, and the third discharge hole discharging coarse sand, medium sand and fine sand. The sand discharged from the three discharge holes passes through three annular filters and enters three outer covers, and then enters three discharge barrels through the discharge port;

[0035] The fine sand discharged from the first discharge hole enters the first discharge barrel, the medium sand and fine sand discharged from the second discharge hole enter the second discharge barrel, and the coarse sand, medium sand and fine sand discharged from the third discharge hole enter the third discharge barrel;

[0036] Coarse sand, medium sand and fine sand enter the third lower barrel, among which the coarse sand is blocked by the second filter screen and discharged through the discharge trough and support plate corresponding to the third lower barrel, while the medium sand and fine sand pass through the second filter screen and enter the second lower barrel through the second connecting pipe;

[0037] The medium sand and fine sand are located in the second lower barrel, wherein the medium sand is blocked by the first filter screen and discharged through the discharge trough and support plate corresponding to the second lower barrel, while the fine sand passes through the first filter screen and enters the first lower barrel through the first connecting pipe. The first lower barrel is full of fine sand, which is discharged through the discharge trough and support plate corresponding to the first lower barrel;

[0038] Therefore, through the setting of three discharge barrels, sand particles of different diameters can be discharged separately, achieving the effect of automatic screening. The sand can be diverted according to the diameter of the sand, eliminating the subsequent screening step.

[0039] 3. The rod mill sand making machine discharges fine sand from the first discharge hole. The discharged fine sand is located in the first annular filter and is blocked by two partitions. It moves in a certain area. The sand that meets the screening specifications of the first annular filter will enter the first outer cover through the first annular filter, while the sand that does not meet the screening specifications of the first annular filter will move to the top of the cylinder in this area and return to the cylinder through the first discharge hole to be ground again, thereby improving the grinding effect of the sand particles and making the discharge particle size meet the requirements.

[0040] 4. For the rod mill sand making machine, the output shaft of the driving motor drives the driving shaft to rotate after the speed reducer is decelerated, and the driving shaft drives the driving gear to rotate, and the driving gear drives the gear ring meshing on its outer wall to rotate, and the gear ring rotates so that the cylinder can rotate to grind the stone;

[0041] When the driving shaft rotates, it will also drive the crankshaft to rotate. The rotation of the crankshaft drives the piston to move up and down in the plug cylinder through the rotating sleeve and the connecting rod. When the piston moves up in the plug cylinder, water in the water tank can be sucked in through the water inlet pipe. When the piston moves down in the plug cylinder, the water in the plug cylinder can be sprayed out through the water outlet pipe and the atomizing nozzle. The atomized water is sprayed on three support plates, which can significantly reduce dust during sand discharge and avoid dust from causing harm to the human body and polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0043] Figure 2 It is a schematic diagram of the annular filter part of the present invention;

[0044] Figure 3 It is a schematic diagram of the discharge hole part of the present invention;

[0045] Figure 4 is a cross-sectional view of the closed frame portion of the present invention;

[0046] Figure 5 It is a three-dimensional schematic diagram of the outer cover part of the present invention;

[0047] Figure 6 It is a schematic diagram of the support plate part of the present invention;

[0048] Figure 7 It is a cross-sectional view of the lower barrel portion of the present invention;

[0049] Figure 8 is a cross-sectional view of the second discharge hole portion of the present invention;

[0050] Fig. 9 It is an enlarged schematic diagram of the mounting plate portion of the present invention;

[0051] Fig.10 For the present invention Fig. 9 A magnified schematic diagram of center A.

[0052] In the figure: 1, cylinder; 2, left support; 3, right support; 4, gear ring; 5, first discharge hole; 6, second discharge hole; 7, third discharge hole; 8, first closed frame; 9, second closed frame; 10, third closed frame; 11, first annular filter; 12, second annular filter; 13, third annular filter; 14, partition; 15, first outer cover; 16, second outer cover; 17, third outer cover; 18, discharge port; 19, first discharge barrel; 20, second discharge barrel; 21 , the third discharge barrel; 22, the first filter screen; 23, the first connecting pipe; 24, the second filter screen; 25, the second connecting pipe; 26, the discharge trough; 27, the support plate; 28, the arc slope; 29, the mounting plate; 30, the driving gear; 31, the driving shaft; 32, the speed reducer; 33, the driving motor; 34, the crankshaft; 35, the vertical cylinder; 36, the rotating sleeve; 37, the connecting rod; 38, the piston; 39, the plug cylinder; 40, the water inlet pipe; 41, the water outlet pipe; 42, the atomizing nozzle. DETAILED DESCRIPTION

[0053] Embodiment 1:

[0054] See also Figure 1-Figure 8 A rod mill sand making machine comprises a cylinder 1 rotatably arranged between a left support 2 and a right support 3, and a first discharge hole 5, a second discharge hole 6 and a third discharge hole 7 are sequentially opened from left to right around the outer wall of the cylinder 1. The cylinder 1 is continuously filled with materials (through a feed port). When the cylinder 1 rotates, the grinding steel rod (not shown in the figure) inside the cylinder 1 rises to a certain height and is thrown down under the action of friction and centrifugal force, so that the materials are impacted and ground and crushed;

[0055] The material moves from left to right in the cylinder 1 under the action of overflow and continuous feeding. During the movement, the material is discharged through the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7. By setting multiple groups of discharge holes (three groups in this embodiment), the ground qualified material can leave the cylinder 1 as early as possible, thereby reducing the phenomenon of over-crushing.

[0056] like Figure 2 and Figure 3 As shown, the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7 are respectively closed by the first closing frame 8, the second closing frame 9 and the third closing frame 10, which are all fixedly mounted on the cylinder 1 to stably fix the positions of the first closing frame 8, the second closing frame 9 and the third closing frame 10;

[0057] The peripheral walls of the first closed frame 8, the second closed frame 9 and the third closed frame 10 are hollowed out and fixedly provided with the first annular filter screen 11, the second annular filter screen 12 and the third annular filter screen 13 respectively. In this embodiment, the opening widths of the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7 are successively wider from left to right, and the mesh apertures of the first annular filter screen 11, the second annular filter screen 12 and the third annular filter screen 13 are successively coarser from left to right, so that the first discharge hole 5 discharges fine sand, the second discharge hole 6 discharges medium sand and fine sand, and the third discharge hole 7 discharges coarse sand, medium sand and fine sand, and the sand discharged from the three discharge holes will enter the three annular filter screens respectively;

[0058] like Figure 5 As shown, the first closed frame 8, the second closed frame 9 and the third closed frame 10 are rotatably arranged in the first outer cover 15, the second outer cover 16 and the third outer cover 17 respectively, the first outer cover 15, the second outer cover 16 and the third outer cover 17 are fixed to the ground through a support frame, the bottom of the first outer cover 15, the second outer cover 16 and the third outer cover 17 are all provided with a discharge port 18, and the first discharge barrel 19, the second discharge barrel 20 and the third discharge barrel 21 are fixedly installed on the three discharge ports 18 from left to right respectively, the outer walls of the first discharge barrel 19, the second discharge barrel 20 and the third discharge barrel 21 are all provided with a discharge trough 26, and the bottom of the discharge trough 26 is fixedly installed with a support plate 27 for guiding the discharge;

[0059] The sand discharged from the three discharge holes passes through three annular filter screens, enters three outer covers, and then enters three discharge barrels through the discharge port 18;

[0060] The fine sand discharged from the first discharge hole 5 enters the first discharge barrel 19, the medium sand and fine sand discharged from the second discharge hole 6 enter the second discharge barrel 20, and the coarse sand, medium sand and fine sand discharged from the third discharge hole 7 enter the third discharge barrel 21;

[0061] like Figure 7 As shown, a first filter screen 22 is fixedly installed on the inner wall of the second lower barrel 20, and the bottom of the second lower barrel 20 is connected to the first lower barrel 19 through a first connecting pipe 23;

[0062] A second filter screen 24 is fixedly mounted on the inner wall of the third lower barrel 21. The bottom of the third lower barrel 21 is connected to the second lower barrel 20 via a second connecting pipe 25. The connecting point between the second connecting pipe 25 and the second lower barrel 20 is located above the first filter screen 22.

[0063] Coarse sand, medium sand and fine sand enter the third lower barrel 21, among which the coarse sand is blocked by the second filter screen 24 and discharged through the discharge trough 26 and the support plate 27 corresponding to the third lower barrel 21, while the medium sand and fine sand pass through the second filter screen 24 and enter the second lower barrel 20 through the second connecting pipe 25;

[0064] The medium sand and fine sand are located in the second lower barrel 20, wherein the medium sand is blocked by the first filter screen 22 and discharged through the discharge trough 26 and the support plate 27 corresponding to the second lower barrel 20, while the fine sand passes through the first filter screen 22 and enters the first lower barrel 19 through the first connecting pipe 23. The first lower barrel 19 is entirely filled with fine sand, which is discharged through the discharge trough 26 and the support plate 27 corresponding to the first lower barrel 19;

[0065] Therefore, through the setting of three discharge barrels, sand particles of different diameters can be discharged respectively, achieving the effect of automatic screening, and the sand can be diverted according to the diameter of the sand, eliminating the step of later screening;

[0066] In this embodiment, Figure 4 As shown, the inner walls of the first annular filter screen 11, the second annular filter screen 12 and the third annular filter screen 13 are all fixedly mounted with a plurality of partitions 14;

[0067] The first discharge hole 5 discharges fine sand, which is located in the first annular filter screen 11 and is blocked by two partitions 14. The fine sand moves in a certain area. The sand that meets the screening specifications of the first annular filter screen 11 will enter the first outer cover 15 through the first annular filter screen 11, while the sand that does not meet the screening specifications of the first annular filter screen 11 will move to the top of the cylinder 1 in this area and return to the cylinder 1 through the first discharge hole 5 to be ground again, thereby improving the grinding effect of the sand particles and making the discharge particle size meet the requirements.

[0068] The same is true for the sand discharged from the second discharge hole 6 and the third discharge hole 7;

[0069] like Figure 8 As shown, the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7 are all formed with an arc-shaped slope 28 on the outward side, and the arc-shaped slope 28 is used to guide unqualified sand particles back into the cylinder 1. When the unqualified sand particles pass through the arc-shaped slope 28 and the discharge hole, they can also impact the sand particles blocked in the discharge hole to achieve the purpose of preventing blockage.

[0070] Embodiment 2:

[0071] See also Fig. 9 and Fig.10On the basis of the first embodiment, a gear ring 4 is fixedly mounted on the outer wall of the cylinder 1, a driving gear 30 is meshed on the outer wall of the gear ring 4, a driving shaft 31 is fixedly mounted at the center of the driving gear 30, one end of the driving shaft 31 is connected to the output shaft of the driving motor 33 through a reducer 32, and a crankshaft 34 is fixedly mounted on the other end of the driving shaft 31, and the crankshaft 34 is rotatably arranged in the vertical cylinder 35;

[0072] In this embodiment, the reducer 32 and the vertical cylinder 35 are fixedly mounted on the mounting plate 29, and the drive motor 33 is also fixedly mounted on the mounting plate 29 through a mounting seat;

[0073] like Fig.10 As shown, a rotating sleeve 36 is rotatably provided on the crankshaft 34, a connecting rod 37 is fixedly installed on the rotating sleeve 36, a piston 38 is movably connected to the bottom end of the connecting rod 37, the piston 38 is movably provided in a plug cylinder 39, the plug cylinder 39 is fixedly installed in the vertical cylinder 35, one side of the outer wall of the plug cylinder 39 is connected to a water tank through a water inlet pipe 40, a one-way water inlet valve is provided on the water inlet pipe 40, through which water can only flow in one direction into the water inlet pipe 40, the other side of the outer wall of the plug cylinder 39 is connected to an atomizing nozzle 42 through a water outlet pipe 41, the atomizing nozzle 42 is arranged toward the support plate 27, and a one-way water outlet valve is provided on the water outlet pipe 41, through which water can only flow out one direction from the water outlet pipe 41;

[0074] The output shaft of the driving motor 33 drives the driving shaft 31 to rotate after being decelerated by the speed reducer 32. The rotation of the driving shaft 31 drives the driving gear 30 to rotate. The rotation of the driving gear 30 drives the gear ring 4 meshed with its outer wall to rotate. The rotation of the gear ring 4 can make the cylinder 1 rotate to grind the stone.

[0075] When the drive shaft 31 rotates, it also drives the crankshaft 34 to rotate. The rotation of the crankshaft 34 drives the piston 38 to move up and down in the plug cylinder 39 through the rotating sleeve 36 and the connecting rod 37. When the piston 38 moves up in the plug cylinder 39, water in the water tank can be sucked in through the water inlet pipe 40. When the piston 38 moves down in the plug cylinder 39, the water in the plug cylinder 39 can be sprayed out through the water outlet pipe 41 and the atomizing nozzle 42. The atomized water is sprayed on the three support plates 27, which can significantly reduce dust during sand discharge and prevent dust from causing harm to the human body and polluting the environment.

[0076] Embodiment three:

[0077] This embodiment provides a method for using a rod mill sand making machine, comprising the following steps:

[0078] Step 1: The cylinder 1 is continuously filled with materials, and the driving motor 33 drives the cylinder 1 to rotate. When the cylinder 1 rotates, the grinding steel rod inside it rises to a certain height under the action of friction and centrifugal force and is thrown down, so that the materials are impacted and ground;

[0079] Step 2: The ground and pulverized material is discharged through the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7 under the action of overflow and continuous feeding;

[0080] Step 3: Among the materials discharged from the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7, the materials meeting the size requirements are discharged through the first annular filter 11, the second annular filter 12 and the third annular filter 13, and the materials not meeting the size requirements are returned to the cylinder 1;

[0081] Step 4: the materials discharged through the first annular filter screen 11, the second annular filter screen 12 and the third annular filter screen 13 enter the first outer cover 15, the second outer cover 16 and the third outer cover 17 respectively, and then enter the first discharge barrel 19, the second discharge barrel 20 and the third discharge barrel 21 respectively through the discharge port 18;

[0082] Step 5: The materials in the first discharge barrel 19 , the second discharge barrel 20 and the third discharge barrel 21 are discharged through three discharge troughs 26 and the support plate 27 respectively.

[0083] The working principle and use process of the present invention:

[0084] The material moves from left to right in the cylinder 1 under the action of overflow and continuous feeding. During the movement, the material will be discharged through the first discharge hole 5, the second discharge hole 6 and the third discharge hole 7, so that the ground qualified material leaves the cylinder 1 as soon as possible, reducing the over-crushing phenomenon;

[0085] The first discharge hole 5 discharges fine sand, the second discharge hole 6 discharges medium sand and fine sand, and the third discharge hole 7 discharges coarse sand, medium sand and fine sand. The sand discharged from the three discharge holes passes through three annular filters and enters three outer covers, and then enters three discharge barrels through the discharge port 18;

[0086] The fine sand discharged from the first discharge hole 5 enters the first discharge barrel 19, the medium sand and fine sand discharged from the second discharge hole 6 enter the second discharge barrel 20, and the coarse sand, medium sand and fine sand discharged from the third discharge hole 7 enter the third discharge barrel 21;

[0087] Coarse sand, medium sand and fine sand enter the third lower barrel 21, among which the coarse sand is blocked by the second filter screen 24 and discharged through the discharge trough 26 and the support plate 27 corresponding to the third lower barrel 21, while the medium sand and fine sand pass through the second filter screen 24 and enter the second lower barrel 20 through the second connecting pipe 25;

[0088] The medium sand and fine sand are located in the second lower barrel 20, wherein the medium sand is blocked by the first filter screen 22 and discharged through the discharge trough 26 and the support plate 27 corresponding to the second lower barrel 20, while the fine sand passes through the first filter screen 22 and enters the first lower barrel 19 through the first connecting pipe 23. The first lower barrel 19 is entirely filled with fine sand, which is discharged through the discharge trough 26 and the support plate 27 corresponding to the first lower barrel 19;

[0089] Therefore, through the setting of three discharge barrels, sand particles of different diameters can be discharged respectively, achieving the effect of automatic screening, and the sand can be diverted according to the diameter of the sand, eliminating the step of later screening;

[0090] The first discharge hole 5 discharges fine sand, which is located in the first annular filter screen 11 and is blocked by two partitions 14. The fine sand moves in a certain area. The sand that meets the screening specifications of the first annular filter screen 11 will enter the first outer cover 15 through the first annular filter screen 11, while the sand that does not meet the screening specifications of the first annular filter screen 11 will move to the top of the cylinder 1 in this area and return to the cylinder 1 through the first discharge hole 5 to be ground again, thereby improving the grinding effect of the sand particles and making the discharge particle size meet the requirements.

[0091] The output shaft of the driving motor 33 drives the driving shaft 31 to rotate after being decelerated by the speed reducer 32. The rotation of the driving shaft 31 drives the driving gear 30 to rotate. The rotation of the driving gear 30 drives the gear ring 4 meshed with its outer wall to rotate. The rotation of the gear ring 4 can make the cylinder 1 rotate to grind the stone.

[0092] When the drive shaft 31 rotates, it also drives the crankshaft 34 to rotate. The rotation of the crankshaft 34 drives the piston 38 to move up and down in the plug cylinder 39 through the rotating sleeve 36 and the connecting rod 37. When the piston 38 moves up in the plug cylinder 39, water in the water tank can be sucked in through the water inlet pipe 40. When the piston 38 moves down in the plug cylinder 39, the water in the plug cylinder 39 can be sprayed out through the water outlet pipe 41 and the atomizing nozzle 42. The atomized water is sprayed on the three support plates 27, which can significantly reduce dust during sand discharge and prevent dust from causing harm to the human body and polluting the environment.

Claims

1. A rod mill sand making machine, comprising a cylinder (1) rotatably arranged between a left support (2) and a right support (3), characterized in that: The outer wall surrounding the cylinder (1) is provided with a first discharge hole (5), a second discharge hole (6) and a third discharge hole (7) in sequence from left to right; The first discharge hole (5), the second discharge hole (6) and the third discharge hole (7) are respectively closed by a first closing frame (8), a second closing frame (9) and a third closing frame (10); the peripheral walls of the first closing frame (8), the second closing frame (9) and the third closing frame (10) are hollowed out and are respectively fixedly provided with a first annular filter screen (11), a second annular filter screen (12) and a third annular filter screen (13); A plurality of partitions (14) are fixedly mounted on the inner walls of the first annular filter screen (11), the second annular filter screen (12) and the third annular filter screen (13); The opening widths of the first discharge hole (5), the second discharge hole (6) and the third discharge hole (7) gradually increase from left to right; The mesh sizes of the first annular filter (11), the second annular filter (12) and the third annular filter (13) become larger from left to right; The first closed frame (8), the second closed frame (9) and the third closed frame (10) are all fixedly mounted on the cylinder (1); The first closed frame (8), the second closed frame (9) and the third closed frame (10) are rotatably arranged in the first outer cover (15), the second outer cover (16) and the third outer cover (17), respectively; the first outer cover (15), the second outer cover (16) and the third outer cover (17) are fixed on the ground through a support frame; and the bottom of the first outer cover (15), the second outer cover (16) and the third outer cover (17) are all provided with a discharge port (18); A first material discharge barrel (19), a second material discharge barrel (20) and a third material discharge barrel (21) are fixedly mounted on the three material discharge ports (18) from left to right, respectively; the outer walls of the first material discharge barrel (19), the second material discharge barrel (20) and the third material discharge barrel (21) are all provided with a material discharge trough (26); a support plate (27) for guiding the discharge is fixedly mounted at the bottom of the material discharge trough (26); A first filter screen (22) is fixedly mounted on the inner wall of the second lower barrel (20), and the bottom of the second lower barrel (20) is connected to the first lower barrel (19) via a first connecting pipe (23); A second filter screen (24) is fixedly mounted on the inner wall of the third lower barrel (21); the bottom of the third lower barrel (21) is connected to the second lower barrel (20) via a second connecting pipe (25); and the connecting point between the second connecting pipe (25) and the second lower barrel (20) is located above the first filter screen (22).

2. A rod mill sand making machine according to claim 1, characterized in that: The first discharge hole (5), the second discharge hole (6) and the third discharge hole (7) are all formed with arc-shaped slope surfaces (28) on their outward sides.

3. A rod mill sand making machine according to claim 2, characterized in that: A gear ring (4) is fixedly mounted on the outer wall of the cylinder (1), a driving gear (30) is meshed with the outer wall of the gear ring (4), a driving shaft (31) is fixedly mounted at the center of the driving gear (30), one end of the driving shaft (31) is connected to the output shaft of a driving motor (33) via a speed reducer (32), a crankshaft (34) is fixedly mounted on the other end of the driving shaft (31), and the crankshaft (34) is rotatably disposed in the vertical cylinder (35); A rotating sleeve (36) is rotatably mounted on the crankshaft (34), a connecting rod (37) is fixedly mounted on the rotating sleeve (36), a piston (38) is movably connected to the bottom end of the connecting rod (37), the piston (38) is movably mounted in a plug cylinder (39), and the plug cylinder (39) is fixedly mounted in the vertical cylinder (35); One side of the outer wall of the plug cylinder (39) is connected to a water tank via a water inlet pipe (40), and the other side of the outer wall of the plug cylinder (39) is connected to an atomizing nozzle (42) via a water outlet pipe (41), and the atomizing nozzle (42) is arranged toward the support plate (27).

4. A rod mill sand making machine according to claim 3, characterized in that: The water inlet pipe (40) is provided with a one-way water inlet valve, and the water outlet pipe (41) is provided with a one-way water outlet valve.

5. The method for using a rod mill sand making machine according to claim 4, characterized in that: The following steps are involved: S1, the cylinder (1) is continuously filled with materials, and the driving motor (33) drives the cylinder (1) to rotate. When the cylinder (1) rotates, the grinding steel rod inside it rises to a certain height under the action of friction and centrifugal force and is thrown down, so that the materials are impacted and ground and crushed; S2, the ground and pulverized material is discharged through the first discharge hole (5), the second discharge hole (6) and the third discharge hole (7) under the action of overflow and continuous feeding; S3, among the materials discharged from the first discharge hole (5), the second discharge hole (6) and the third discharge hole (7), the materials meeting the size requirements are discharged through the first annular filter (11), the second annular filter (12) and the third annular filter (13), and the materials not meeting the size requirements are returned to the cylinder (1); S4, the materials discharged through the first annular filter (11), the second annular filter (12) and the third annular filter (13) enter the first outer cover (15), the second outer cover (16) and the third outer cover (17) respectively, and then enter the first discharge barrel (19), the second discharge barrel (20) and the third discharge barrel (21) respectively through the discharge port (18); S5, the materials in the first lower barrel (19), the second lower barrel (20) and the third lower barrel (21) are discharged through three discharge troughs (26) and a support plate (27) respectively.

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