Roller type sand making machine

Abstract

The utility model relates to a roller type sand making machine which comprises a main body, the grinding disc is at least provided with a first grinding disc surface and a second grinding disc surface from top to bottom; the grinding roller device is provided with a grinding roller end face and a grinding roller inclined face, a first grinding channel is formed between the grinding roller end face and the first grinding disc face, and a second grinding channel is formed between the grinding roller inclined face and the second grinding disc face; the driving device comprises a rotating shaft part, the grinding roller device is connected with the rotating shaft part, the central axis of the grinding roller device is perpendicular to the first grinding disc surface, a preset included angle is formed between the central axis of the grinding roller device and the central axis of the rotating shaft part, and the preset included angle is an acute angle; and the pressure maintaining device is connected with the grinding disc or the grinding roller device so as to at least adjust the distance between the second grinding channels, and the crushing device has the advantage of being high in crushing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sand making equipment, in particular to a roller sand making machine. Background Art

[0002] Roller sand making machine is a kind of equipment widely used in medium and fine crushing of ores and rocks with medium hardness or below in sand making, mineral processing, cement, metallurgy, chemical industry, building materials and other industrial sectors. It usually includes fixed roller, movable roller, driving device and other structures, wherein a crushing chamber is formed between the fixed roller and the movable roller. When crushing materials, the materials enter the crushing chamber and are crushed into preset specifications under the action of the fixed roller and the movable roller.

[0003] Existing double-roller sand making machines usually use a certain distance between the fixed roller and the movable roller, and then drive the fixed roller and the movable roller to move inward in the opposite direction to achieve material crushing. However, since the raw materials of the materials are usually of different specifications, the material crushing efficiency is easily low.

[0004] Therefore, it is worthy of study for those skilled in the art to provide a roller sand making machine with high crushing efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a roller sand making machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A roller sand making machine comprises a main body; a grinding disc, which is provided with at least a first grinding disc surface and a second grinding disc surface from top to bottom; a grinding roller device, which has a grinding roller end face and a grinding roller inclined surface, a first grinding channel is formed between the grinding roller end face and the first grinding disc surface, and a second grinding channel is formed between the grinding roller inclined surface and the second grinding disc surface; a driving device comprises a rotating shaft portion, the grinding roller device is connected to the rotating shaft portion, and the central axis of the grinding roller device is perpendicular to the first grinding disc surface and forms a preset angle with the central axis of the rotating shaft portion, and the preset angle is an acute angle; a pressure holding device is connected to the grinding disc or the grinding roller device to at least adjust the spacing of the second grinding channel.

[0008] Preferably, there are several grinding roller devices distributed circumferentially around the rotating shaft; each of the grinding roller devices includes a mounting shaft, a grinding roller and a driving member; one end of the mounting shaft is fixedly connected to the rotating shaft, and the other end is rotatably connected to the grinding roller; the driving member is installed on the mounting shaft and is used to drive the grinding roller to rotate.

[0009] Preferably, the central axis of the rotating shaft portion is perpendicular to the horizontal plane; an obtuse angle is formed between the first grinding disc surface and the second grinding disc surface; and the preset angle has a value range of 60° to 80°.

[0010] Preferably, the first grinding disc surface is parallel to the grinding roller end surface; the second grinding disc surface is parallel to the grinding roller inclined surface; the distance H1 between the first grinding disc surface and the grinding roller end surface is greater than the distance H2 between the second grinding disc surface and the grinding roller inclined surface.

[0011] Preferably, the pressure-maintaining device has a telescopic end and a fixed end that are relatively arranged; the telescopic end has a preset bearing pressure, and the telescopic end is configured to drive the grinding disc to move away from the grinding roller device when the real-time pressure on the grinding disc exceeds the preset bearing pressure, or, the driving device includes a grinding roller mounting shaft driven by the rotating shaft portion; the telescopic end is connected to the grinding roller mounting shaft, and has a motion state of driving the grinding roller mounting shaft to move axially to adjust the spacing between the first grinding channel and the second grinding channel.

[0012] Preferably, the main body comprises an outer shell body fixedly connected as one body, the outer shell body forms a horizontal mounting platform, and the fixed end is fixedly arranged on the horizontal mounting platform; the upper end of the outer shell body is connected to a feeding device, and the discharge end of the feeding device faces the first grinding channel.

[0013] Preferably, the main body includes a base frame, a middle frame and an upper shell which are arranged in a split type; the middle frame is installed on the upper end of the base frame, the upper shell is installed on the upper end of the middle frame, the grinding disc is rotatably installed on the upper shell, and the upper end of the upper shell is fixedly connected to a feeding device.

[0014] Preferably, the grinding disc is rotatably mounted on the upper shell; along the axial direction of the rotating shaft portion, the grinding disc at least forms an offset abutment with the middle frame.

[0015] Preferably, the driving device further comprises a power unit for driving the rotating shaft portion to rotate; the power unit comprises at least two power components, and the power components are symmetrically distributed with respect to the rotating shaft portion.

[0016] Preferably, the driving device also includes a power unit; the rotating shaft unit includes a fixed vertical shaft and a rotating shaft, the fixed vertical shaft is fixedly connected to the main body, and the rotating shaft is axially slidably connected to the fixed vertical shaft; the pressure maintaining device is fixed on the fixed vertical shaft, and the lower end of the rotating shaft is driven by the power unit.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. By forming the first grinding channel and the second grinding channel in the direction of gravity, the material can be pre-crushed in the first grinding channel before entering the second grinding channel for secondary crushing during the material crushing process, thereby increasing the crushing efficiency. Furthermore, in this solution, the central axis of the grinding roller device is perpendicular to the first grinding disc surface, and forms a preset angle with the central axis of the rotating shaft, and the preset angle is an acute angle, so that the overall rotation center axis of the grinding roller device forms an acute angle with the first grinding disc surface. This setting enables the grinding roller device to generate a centrifugal force component in the horizontal and vertical directions when the rotating shaft drives the grinding roller device to rotate. The centrifugal force component in the horizontal direction will increase the extrusion force applied by the end face of the grinding roller to the material in the first grinding channel, and the centrifugal force component in the vertical direction will increase the extrusion force applied by the inclined surface of the grinding roller to the material in the first grinding channel, thereby increasing the material crushing efficiency.

[0019] 2. Since the spacing between the grinding roller and the grinding disc of the existing equipment is fixed, when the force between the grinding roller and the grinding disc on the material is large, it is easy to cause excessive crushing of the material, resulting in fine crushing of the crushed material, and it is difficult to obtain medium-crushed material. Therefore, this solution also connects the pressure holding device with the grinding disc or grinding roller device, so that it can at least adjust the spacing of the second grinding channel, thereby avoiding excessive extrusion leading to fine crushing of the material and failure to meet the preset specifications of material preparation. At the same time, it can also avoid material jamming in the second grinding channel affecting equipment operation and crushing efficiency.

[0020] 3. By setting the rotating shaft as a split structure, the supporting effect of the grinding roller device can be increased, the electric grinding roller device can run stably and maintain a relatively high rotation speed, thereby increasing the crushing efficiency of the equipment; at the same time, the pressure maintaining device is independently set relative to the actual rotating part of the rotating shaft (central axis or rotating axis), which can not only achieve the pressure maintaining effect but also reduce the energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram provided for the first embodiment of the present utility model.

[0023] Figure 2 for Figure 1 Schematic diagram of the structure of the middle grinding disc, grinding roller device and unloading device.

[0024] Figure 3 for Figure 2Schematic diagram of the position of the middle grinding disc and grinding roller.

[0025] Figure 4 for Figure 1 A schematic diagram of another viewing angle of the first embodiment is provided.

[0026] Figure 5 for Figure 1 Schematic diagram of the connection between the center pressure device and the grinding disc.

[0027] Figure 6 for Figure 1 Schematic diagram of the structure of the drive device.

[0028] Figure 7 for Figure 6 Enlarged schematic diagram of the D1 position in the middle

[0029] Figure 8 This is a structural diagram provided for the second embodiment of the present utility model.

[0030] Fig. 9 for Figure 8 Schematic diagram of the structure of the drive device.

[0031] Fig.10 for Figure 8 Schematic diagram of the structure of the telescopic drive part, main body and turntable.

[0032] Fig.11 for Fig.10 Schematic diagram of the enlarged D2 position.

[0033] Description of reference numerals:

[0034] 100, grinding channel; 101, first grinding channel; 102, second grinding channel; 1, main body; 11, outer shell; 111, horizontal mounting platform; 112, accommodating chamber; 12, bottom frame; 13, middle frame; 131, second abutting gear ring; 14, upper shell; 2, grinding disc; 201, first grinding disc surface; 202, second grinding disc surface; 203, feed guide surface; 21, first grinding disc; 22, second grinding disc; 23, third grinding disc ; 24, connecting seat; 25, first abutting gear ring; 26, grinding disc driving member; 261, power source; 262, driving wheel; 263, driven wheel; 3, grinding roller device; 301, grinding roller end face; 302, grinding roller inclined surface; 31, mounting shaft; 32, grinding roller; 4, driving device; 40, rotating shaft; 401, central rotating shaft; 402, outer shaft sleeve; 403, bearing group; 404, inner shaft sleeve; 405, fixed vertical shaft; 4051 , guide groove; 406, rotating shaft; 407, inner copper sleeve; 408, expansion sleeve; 41, power unit; 411, power assembly; 4111, first pulley; 4112, second pulley; 4113, transmission belt; 412, transmission gear set; 4121, driving bevel gear; 4122, driven bevel gear; 42, grinding roller mounting shaft; 43, connecting assembly; 431, first connecting piece; 432, second connecting piece; 5, pressure holding device; 51. Telescopic end; 52. Fixed end; 53. Piston rod; 6. Telescopic drive member; 61. Fixed lower end; 62. Telescopic upper end; 7. Locking device; 71. Rotary drive member; 72. Rotary locking block; 721. Third tightening gear ring; 8. Feeding device; 81. Collecting box; 82. Feeding assembly; 821. Feeding section; 822. Guide section; 9. Discharging device; 91. Discharging port; 92. Discharging channel; 10. Displacement sensor. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figures 1 to 11 The embodiment of the utility model provides a roller sand making machine, including a main body 1, a grinding disc 2, a grinding roller device 3, a driving device 4 and a pressure-maintaining device 5, wherein the main body 1 is the main frame structure of the sand making machine, a grinding channel 100 is formed between the grinding disc 2 and the grinding roller device 3 (specifically, the grinding roller 32), the driving device 4 is used to drive the grinding roller device 3 to rotate, and then the grinding roller device 3 extrude and grind the material in the grinding channel 100, the pressure-maintaining device 5 is mainly used to adjust the spacing of the grinding channel 100 to prepare materials of preset specifications, and the setting of the pressure-maintaining device 5 can avoid material jamming between the grinding disc 2 and the grinding roller device 3 or excessive extrusion resulting in smaller materials.

[0039] Among them, the grinding disc 2, the grinding roller device 3, the driving device 4 and the pressure maintaining device 5 can all be set to a variety of structures, so that the sand making machine has a high crushing efficiency and can prepare materials of preset specifications.

[0040] Embodiment 1

[0041] See also Figures 1 to 7In this embodiment, the grinding channel 100 includes a first grinding channel 101 and a second grinding channel 102; the grinding disc 2 is installed on the main body 1, and has a first grinding disc surface 201 and a second grinding disc surface 202; the grinding roller device 3 has a grinding roller end surface 301 and a grinding roller inclined surface 302, the first grinding channel 101 is formed between the grinding roller end surface 301 and the first grinding disc surface 201, and the second grinding channel 102 is formed between the grinding roller inclined surface 302 and the second grinding disc surface 202, and along the central axis direction of the device , the first grinding disc surface 201 and the second grinding disc surface 202 are arranged from top to bottom, and correspondingly, the first grinding channel 101 and the second grinding channel 102 are distributed from top to bottom and are interconnected, and the second grinding channel 102 is located on one side of the discharge end of the first grinding channel 101; the driving device 4 includes a rotating shaft portion 40, and the rotating shaft portion 40 is connected to the grinding roller device 3, thereby driving the grinding roller device 3 to rotate, and cooperates with the grinding disc 2 to achieve the crushing of the materials in the first grinding channel 101 and the second grinding channel 102. During the material preparation process, the material first passes through the first grinding channel 101, and is squeezed and sheared by the first grinding disc surface 201 and the grinding roller end surface 301, so that the material is pre-crushed, and the pre-crushed material slides along the first grinding channel 101 to the second grinding channel 102 under the action of gravity for secondary crushing.

[0042] In order to increase the material crushing efficiency, in the present embodiment, the shaft portion 40 is installed vertically, the central axis L1 of the grinding roller device 3 is perpendicular to the first grinding disc surface 201, and forms a preset angle J with the central axis L of the shaft portion 40, and the preset angle J is an acute angle. This arrangement makes the overall rotation center axis of the grinding roller device 3 form an acute angle with the first grinding disc surface 201, so that when the shaft portion 40 drives the grinding roller device 3 to rotate, the grinding roller device 3 will generate a centrifugal force component in the horizontal direction and the vertical direction, wherein the centrifugal force component in the horizontal direction will increase the extrusion pressure applied by the grinding roller end face 301 to the material in the first grinding channel 101, and the centrifugal force component in the vertical direction will increase the extrusion pressure applied by the grinding roller inclined surface 302 to the material in the first grinding channel 101, thereby increasing the material crushing efficiency.

[0043] Specifically, see Figure 2 and Figure 3 In this embodiment, the central axis of the rotating shaft portion 40 is perpendicular to the horizontal plane; the preset angle J can be set to 60°, 70°, 75° or 80°. Of course, the preset angle J can be in the range of 60° to 80°, so that when the rotating shaft portion 40 drives the grinding roller device 3 to rotate circumferentially, the centrifugal force component in the horizontal direction is greater than the centrifugal force component in the vertical direction, so that the grinding roller device 3 can apply a greater force to the first grinding channel 101, so that the pre-crushing effect is better, and the centrifugal force component in the vertical direction is relatively small, which can avoid excessive crushing of the material and cause the material specifications to be smaller.

[0044] Furthermore, the first grinding disc surface 201 and the second grinding disc surface 202 are at an obtuse angle, so that the first angle J1 between the first grinding disc surface 201 and the horizontal plane is greater than the second angle J2 between the second grinding disc surface 202 and the horizontal plane, that is, J1>J2, so that the speed at which the material moves down along the first grinding disc surface 201 is greater than the speed at which the material moves down along the second grinding disc surface 202, which can improve the crushing efficiency of the equipment while not affecting the crushing effect of the equipment. From the geometric relationship, it can be seen that the first angle J1 is equal to the preset angle J, which can be set to 60°, 70°, 75° or 80°, and the value range of the first angle J1 is 60° to 80°. The second angle J2 can be set to 10°, 20° or 30°.

[0045] See also Figure 2 and Figure 3 In order to facilitate feeding and make the material fall smoothly into the first grinding channel 101, the equipment also includes a feeding device 8, which includes a collection box 81 and a plurality of feeding components 82. The feeding components 82 have a connecting feeding state connecting the collection box 81 and the grinding channel 100.

[0046] Specifically, in order to facilitate feeding, the feed assembly 82 is located directly above the feed end of the first grinding channel 101, and the feed assembly 82 includes a feed section 821 and a guide section 822 connecting the feed section 821 and the collection box 81. Among them, the inner wall surface of the feed section 821 is perpendicular to the horizontal plane, and the discharge end of the feed section 821 is directly opposite to the feed end of the first grinding channel 101, and the first grinding disc surface 201 and the central axis of the feed section 821 form a fourth angle J4; the fourth angle J4 can be set to 5°, 10° or 15°. The inner wall surface of the guide section 822 forms a preset inclination angle Z with the horizontal plane, and the preset inclination angle Z can be set to 60°, 70° or 80°. The setting of the preset inclination angle Z is conducive to the material in the collecting box 81 entering the feeding end 821, and the inner wall surface of the guide section 822 is perpendicular to the horizontal plane, so that the material will only be subjected to vertical downward force during the discharge process, thereby preventing the material from deviating from the first grinding channel 101.

[0047] Furthermore, the grinding disc 2 also has a feed guide surface 203. Along the direction of gravity, the feed guide surface 203, the first grinding disc surface 201, and the second grinding disc surface 202 are sequentially connected to form the inner wall surface of the grinding disc 2. The feed guide surface 203 forms a third angle J3 with the horizontal plane, the second angle J2 is smaller than the third angle J3, and the third angle J3 is smaller than the first angle J1, that is, J1>J3>J2.

[0048] Specifically, the third angle J3 can be set to 30°, 45° or 60°. By reasonably setting the angle of the feed guide surface 203, it is possible to prevent the material from directly hitting the grinding roller device 3 during the feeding process, or even falling from both sides of the grinding disc 2 and the grinding roller device 3 (i.e., both sides of the feed end of the first grinding channel 101) without entering the first grinding channel 101, thereby increasing the crushing efficiency and service life of the equipment (sand making machine). Of course, in other embodiments, the feed guide surface 203 may not be set. In this case, the first angle J1 may be appropriately reduced to prevent the material from failing to enter the first grinding channel 101 smoothly.

[0049] More specifically, the feed guide surface 203 is connected to one end of the first grinding disc surface 201 away from the second grinding disc surface 202, and in the bottom-to-top direction, the feed guide surface 203 extends from the lower end of the feed section 821 to the outer side of the feed section 821 away from the driving device 4. The feed guide surface 203 forms a fifth angle J5 with the central axis of the feed section 821; the fifth angle J5 can be set to 30°, 45° or 60°.

[0050] Furthermore, in order to further avoid the material from hitting the grinding roller device 3 during the feeding process, in the present embodiment, one end of the grinding roller inclined surface 302 of the grinding roller device 3 is connected to the grinding roller end surface 301. For the convenience of explanation, taking the cross-section of the grinding roller device 3 as an example, at least a part of the grinding roller inclined surface 302 is located at the lower end of the feeding section 821. Therefore, in order to facilitate the feeding, the grinding roller inclined surface 302 extends from the lower end of the feeding section 821 to the outer side of the feeding section 821 close to the driving device 4, so that the grinding roller inclined surface 302 and the central axis of the feeding section 821 form a sixth angle J6; the value range of the sixth angle J6 is 45°, 50° or 60°.

[0051] It is worth mentioning that the values ​​of the first angle J1, the second angle J2, the third angle J4, the fifth angle J5, the sixth angle J6, the preset angle J, the preset inclination angle Z and other angles in the present embodiment are set based on the purpose of facilitating the unloading of the equipment and allowing the material to fall smoothly into the first grinding channel 101. It is also related to the specific structure and installation position of the grinding disc 2, the grinding roller device 3 and the unloading device 8. During the specific design and manufacturing, the values ​​of the above angles satisfy the geometric relationship, such as the first angle J1 described above is equal to the preset angle J.

[0052] In addition, for the convenience of processing, in the present embodiment, the grinding wheel 2 is configured to be plate-shaped, specifically including a first grinding wheel 21, a second grinding wheel 22 and a third grinding wheel 23. The inner wall surface of the first grinding wheel 21 forms a first grinding wheel surface 201, the inner wall surface of the second grinding wheel 22 forms a second grinding wheel surface 202, and the inner wall surface of the third grinding wheel 23 forms a feed guide surface 203.

[0053] See also Figure 2 and Figure 3In order to make the material evenly stressed and thus prepare material with certain specifications and sizes, the first grinding disc surface 201 is parallel to the end surface 301 of the grinding roller; the second grinding disc surface 202 is parallel to the inclined surface 302 of the grinding roller, and the first grinding disc surface 201.

[0054] Furthermore, in order to further improve the crushing efficiency of the device while not affecting the crushing effect of the device, in this embodiment, the width H1 of the first grinding channel 101 is greater than the width H2 of the second grinding channel 102 .

[0055] See also Figure 1 and Figure 4 In this embodiment, there are four grinding roller devices 3 distributed circumferentially around the rotating shaft 40. By reasonably setting the number of grinding roller devices 3, the high crushing efficiency of the sand making machine can be achieved, and the too many grinding roller devices 3 can be avoided, which will cause the distance between two grinding roller devices 3 to be too small, thus affecting the discharge of materials, and further improve the crushing efficiency of the sand making machine. The reasonable setting of the number of grinding roller devices 3 can also reduce the energy consumption of the equipment to a certain extent. Of course, in other embodiments, the grinding roller device 3 can also be set to one, two, three or more.

[0056] Further, each grinding roller device 3 includes a mounting shaft 31, a grinding roller 32 and a driving member; one end of the mounting shaft 31 is fixedly connected to the rotating shaft portion 40, and the other end is rotatably connected to the grinding roller 32; the driving member is installed on the mounting shaft 31, and can be specifically set to a motor, not shown in the figure, and the driving member is mainly used to drive the grinding roller 32 to rotate, thereby further increasing the crushing efficiency of the sand making machine.

[0057] Furthermore, in order to facilitate the discharge of materials, in the present embodiment, a plurality of grinding discs 2 are distributed in a circumferential array around the rotating shaft portion 40. Of course, in other embodiments, the grinding discs 2 may also be distributed in an integrated manner around the rotating shaft portion 40.

[0058] See also Figure 1 and Figure 5 , the pressure-maintaining device 5 has a telescopic end 51 and a fixed end 52 that are arranged relatively. The telescopic end 51 has a preset bearing pressure, and the telescopic end 51 is configured to drive the grinding disc 2 to move away from the grinding roller device 3 when the real-time pressure on the grinding disc 2 exceeds the preset bearing pressure. This setting can make it possible to adjust the distance between the grinding disc 2 and the grinding roller device 3 to be enlarged when the force exerted by the grinding disc 2 and the grinding roller device 3 on the material is too large, thereby avoiding the material being processed to a size that is too small, and at the same time, it can also increase the service life of the grinding disc 2 and the grinding roller device 3. It is worth noting that in this embodiment, the pressure-maintaining device 5 is configured as a telescopic cylinder, so that it can actively adjust the distance between the grinding disc 2 and the grinding roller device 3, so as to control the width of the grinding channel 100, so that the device can meet the needs of processing materials of different specifications.

[0059] Specifically, in order to increase the installation stability of the pressure maintaining device 5, in this embodiment, the main body 1 includes an outer shell 11 fixed into one body, the outer shell 11 forms a horizontal mounting platform 111, and the fixed end 52 is fixed on the horizontal mounting platform 111, thereby ensuring the installation stability of the pressure maintaining device 5.

[0060] Furthermore, in order to prevent material splashing and reduce noise, the outer shell 11 also surrounds and forms an accommodating chamber 112 for accommodating the grinding disc 2 , the grinding roller device 3 and the pressure maintaining device 5 .

[0061] Since the grinding disc 2 and the grinding roller device 3 will be subjected to reaction force during the process of crushing materials, and the grinding disc 2 is connected to the telescopic end 51 of the pressure maintaining device 5, in order to increase the installation stability of the grinding disc 2, in this embodiment, a connecting seat 24 is provided on the side of the grinding disc 2 away from the grinding roller device 3.

[0062] Specifically, the connecting seat 24 is fixedly connected to the first grinding disc 21 and the third grinding disc 23, and is located at the connecting position of the first grinding disc 21 and the third grinding disc 23, which can effectively maintain the balance of the grinding disc 2 and provide a better supporting effect on the grinding disc 2. In order to further increase the support stability of the connecting seat 24, the connecting area of ​​the connecting seat 24 and the first grinding disc 21 is larger than the connecting area of ​​the connecting seat 24 and the third grinding disc 23.

[0063] Furthermore, the connecting seat 24 is rotatably connected to the telescopic end 51, so that when the grinding disc 2 is subjected to excessive force, it can produce a certain rotation to offset part of the force, thereby avoiding that when fixedly installed, the force of the grinding disc 2 is transmitted to the telescopic end 51, causing the telescopic end 51 to be deformed by excessive horizontal force, thereby affecting the pressure-maintaining adjustment effect of the pressure-maintaining device 5.

[0064] See also Figure 1 In order to increase the stability of the feeding device 8 , in this embodiment, the upper end of the outer shell 11 is connected to the feeding device 8 , and the discharge end of the feeding device 8 faces the first grinding channel 101 .

[0065] Furthermore, it also includes a discharge device 9; the discharge device 9 includes a discharge port 91 arranged below the main body 1 (i.e., the outer shell 11), and a discharge channel 92 connecting the discharge port 91 and the grinding channel 100. By arranging the feeding device 8 and the discharge device 9 on the same outer shell 11, it is convenient to position and install the two, and at the same time, the stability of the installation of the two can be ensured.

[0066] See also Figure 6 and Figure 7In this embodiment, the driving device 4 includes a rotating shaft portion 40, a power portion 41 and a grinding roller mounting shaft 42. The rotating shaft portion 40 includes a central rotating shaft 401, the upper end of the central rotating shaft 401 is fixedly connected to the grinding roller mounting shaft 42, and the lower end is driven to rotate by the power portion 41. The power portion 41 includes at least two power components 411, and the power components 411 are symmetrically distributed about the central rotating shaft 401, thereby ensuring the stability of the central rotating shaft 401 while increasing its rotation speed and increasing the crushing efficiency of the equipment.

[0067] Specifically, the power assembly 411 includes a first pulley 4111 fixed to the lower end of the central shaft 401, a second pulley 4112 driven by a motor, and a transmission belt 4113 connecting the first pulley 4111 and the second pulley 4112, further increasing the stability of the transmission so that the central shaft 401 rotates smoothly.

[0068] Since the grinding roller device 3 has a certain weight, when the diameter of the central rotating shaft 401 is larger, the supporting effect of the grinding roller device 3 and the grinding roller mounting shaft 42 is better, and it is more conducive to the stable operation of the grinding roller device 3. Correspondingly, the larger the mass of the central rotating shaft 401 is, the greater the energy consumption when the power unit 41 drives the central rotating shaft 401, the grinding roller mounting shaft 42 and the grinding roller device 3 is. When the diameter of the central rotating shaft 401 is smaller, its mass is smaller, and the energy consumption when the power unit 41 drives the central rotating shaft 401, the grinding roller mounting shaft 42 and the grinding roller device 3 to move is smaller.

[0069] In order to ensure the stable operation of the grinding roller device 3 and reduce the energy consumption of the equipment, in this embodiment, the shaft portion 40 also includes an outer sleeve 402 and two groups of bearing groups 403 distributed along the axial direction of the central shaft 401; the outer sleeve 402 is fixedly connected to the main body 1 of the roller sand making machine, and the inner wall surface of the bearing group 403 is against the inner wall surface of the central shaft 401, and the outer wall surface is against the inner wall surface of the outer sleeve 402. Of course, in other embodiments, the bearing group 403 can also be set to three groups, four groups or more groups, which can be specifically set according to the structure of the central shaft 401 and the axial extension length.

[0070] Specifically, an inner sleeve 404 is disposed between two adjacent bearing groups 403 , and two ends of the inner sleeve 404 abut against end surfaces of the bearing groups 403 , thereby increasing the stability of the installation of the bearing groups 403 .

[0071] Furthermore, the ratio of the diameter of the grinding roller mounting shaft 42 to the diameter of the central rotating shaft 401 can be set to 0.2, 0.3 or 0.4, and the ratio of the diameter of the grinding roller mounting shaft 42 to the outer diameter of the outer sleeve 402 can be set to 0.9, 1, 1.1 or 1.2. By fixedly connecting the outer sleeve 402 to the main body 1 and having a reasonable size ratio between the outer sleeve 402 and the central rotating shaft 401, it can not only meet the stable transmission effect, but also reduce the energy consumption of the equipment.

[0072] See also Figure 7 In order to achieve stable installation of the outer sleeve 402 and the grinding roller installation shaft 42, the upper end of the outer sleeve 402 is rotatably connected to the grinding roller installation shaft 42 through a connecting assembly 43. The connecting assembly 43 includes a first connecting member 431 fixedly installed on the upper end of the outer sleeve 402 and a second connecting member 432 fixedly arranged on the grinding roller installation shaft 42. In order to increase the stability and sealing of the connection between the first connecting member 431 and the second connecting member 432, the first connecting member 431 and the second connecting member 432 are engaged and have a relative rotation state.

[0073] Specifically, the fitting position of the first connecting member 431 and the second connecting member 432 forms a stepped sealing surface; the first connecting member 431 and the grinding roller mounting shaft 42 form a stepped sealing surface. It is worth noting that the stepped sealing surface can be formed by the outer wall of the annular sleeve and the inner wall of the annular groove, which can not only not affect the relative rotation of the first connecting member 431 and the second connecting member 432, but also can achieve relative sealing between the two to prevent foreign matter (such as fine particles of dust and sand and stone from getting stuck in the center shaft 401, the bearing group 403, and the inner sleeve 404, affecting the rotation of the shaft part 40).

[0074] Of course, in other embodiments, the stepped sealing surface between the first connecting member 431 and the second connecting member 432 may also be matched and formed by a plurality of blocks and annular grooves distributed in an annular array, so as to achieve relative rotation and sealing between the two; in addition, only the mating position of the first connecting member 431 and the second connecting member 432 may form a stepped sealing surface, or only the first connecting member 431 and the grinding roller mounting shaft 42 may form a stepped sealing surface.

[0075] Embodiment 2

[0076] See also Figures 8 to 11 Based on the above-mentioned embodiment 1, the difference of this embodiment is that: the driving device 4 includes a grinding roller mounting shaft 42 driven by the rotating shaft portion 40; the telescopic end 51 of the pressure maintaining device 5 is connected to the grinding roller mounting shaft 42, and has a motion state of driving the grinding roller mounting shaft 42 to move axially to adjust the distance between the first grinding channel 101 and the second grinding channel 102.

[0077] In this embodiment, the pressure-maintaining device 5 also includes a displacement sensor 10 for detecting the displacement distance of the telescopic end 51. The displacement sensor 10 is connected to the pressure-maintaining device 5, so that the pressure-maintaining device 5 can adjust the telescopic distance of the telescopic end 51 according to the displacement of the telescopic end 51 detected by the displacement sensor 10. For example, the displacement sensor 10 is connected to the pressure-maintaining device 5 through a control device (such as a single-chip microcomputer, etc.), and the control device can preset displacement standard parameters. The real-time displacement data of the telescopic end 51 detected by the displacement sensor 10 can be compared with the preset displacement standard parameters. When the real-time displacement data is greater than the preset displacement standard parameters, it indicates that the telescopic end 51 is excessively displaced, the grinding roller mounting shaft 42 drives the grinding roller device 3 to move too far, and the spacing between the first grinding channel 101 and the second grinding channel 102 becomes smaller. At this time, the telescopic end 51 can be adjusted to be telescopic, thereby increasing the accuracy of the spacing adjustment between the first grinding channel 101 and the second grinding channel 102.

[0078] Specifically, the pressure-maintaining device 5 in this embodiment can be configured as a telescopic cylinder including a piston rod 53 , and the displacement sensor 10 is used to detect the displacement distance of the piston rod 53 .

[0079] See also Figure 8 and Fig. 9 In order to achieve stable support for the grinding roller mounting shaft 42, make the equipment transmission more stable, and reduce the energy consumption of the equipment, in this embodiment, the driving device 4 includes a rotating shaft part 40, a power part 41 and a grinding roller mounting shaft 42, wherein the rotating shaft part 40 includes a fixed vertical shaft 405 and a rotating shaft 406; the fixed vertical shaft 405 is fixedly connected to the main body 1 of the roller sand making machine, and the rotating shaft 406 is axially slidably connected to the fixed vertical shaft 405; the upper end of the rotating shaft 406 is fixedly connected to the grinding roller mounting shaft 42, and the lower end of the rotating shaft 406 is driven by the power part 41; the pressure maintaining device 5 is fixedly arranged on the fixed vertical shaft 405, and is used to drive the grinding roller mounting shaft 42 and the grinding roller device 3 to move axially. By dividing the rotating shaft 40 into a fixed vertical shaft 405 and a rotating shaft 406 that slide relative to each other, the rotating shaft 406 is used to connect the power unit 41 and the grinding roller installation shaft 42, which can not only stably support and stably rotate the grinding roller device 3, but also drive the grinding roller device 3 to slide up and down to adjust the spacing of the grinding channel 100 and prepare materials of specified specifications. In addition, the pressure-maintaining device 5 is installed on the fixed vertical shaft 405, and the rotating shaft 40 is configured as a fixed vertical shaft 405 (fixed setting) and a rotating shaft 406 (rotating setting), which can reduce the number of structures that the power unit 41 needs to drive and the overall counterweight, thereby effectively reducing the energy consumption of the equipment.

[0080] Furthermore, in order to facilitate relative sliding between the fixed vertical shaft 405 and the rotating shaft 406, a sliding bearing is provided between the fixed vertical shaft 405 and the rotating shaft 406. Specifically, the sliding bearing is provided as an inner copper sleeve 407; the inner wall surface of the inner copper sleeve 407 abuts against the fixed vertical shaft 405, and the outer wall surface abuts against the rotating shaft 406.

[0081] Specifically, in order to facilitate the stable connection between the rotating shaft 406 and the grinding roller mounting shaft 42, the upper end of the rotating shaft 406 is fixedly connected to the grinding roller mounting shaft 42 via an expansion sleeve 408; the expansion sleeve 408 is detachably installed on the upper end of the rotating shaft 406, and the inner wall surface of the expansion sleeve 408 is expanded and tightly pressed against the outer wall surface of the grinding roller mounting shaft 42.

[0082] In order to increase the stability of transmission, in this embodiment, the power unit 41 includes a transmission gear set 412 and a power source for driving the transmission gear set 412 to engage in transmission; the transmission gear set 412 includes a driving bevel gear 4121 and a driven bevel gear 4122; the driving bevel gear 4121 is driven by the power source, and the driven bevel gear 4122 is fixed to the lower end of the rotating shaft 406.

[0083] Furthermore, the driven bevel gear 4122 has a greater number of teeth than the driving bevel gear 4121 .

[0084] Furthermore, in order to achieve stable extension and retraction of the telescopic end 51 and drive the grinding roller mounting shaft 42 to move stably, a guide groove 4051 is provided on the upper end of the fixed vertical shaft 405, and the outer wall surface of the telescopic end 51 abuts against the inner wall surface of the guide groove 4051.

[0085] See also Figure 8 In order to facilitate equipment maintenance and structural parts replacement, in this embodiment, the main body 1 includes a base frame 12, a middle frame 13 and an upper shell 14 which are arranged in a split manner; the middle frame 13 is installed on the upper end of the base frame 12, and the upper shell 14 is installed on the upper end of the middle frame 13 to form an accommodating chamber 112 for accommodating the grinding disc 2 and the grinding roller device 3.

[0086] Specifically, the turntable 2 is rotatably mounted on the upper shell 14 and is driven by a grinding disc driver 26; the grinding disc driver 26 includes a power source 261, a driving wheel 262 and a driven wheel 263, and the driven wheel 263 is fixedly connected to the grinding disc 2, so that when the grinding disc 2 needs to be replaced or overhauled, the turntable 2 can be driven away from the grinding roller device 3 to facilitate operation by the operator.

[0087] Furthermore, the feeding device 8 is fixedly mounted on the upper end of the upper shell 14, so that during the rotation of the turntable 2, the force generated by its rotation can be transmitted to the feeding device 8 through the upper shell 14, causing the feeding device 8 to shake, thereby avoiding residual material at the feeding end 821 and the material guide end 822 of the feeding device 8.

[0088] See also Fig.10 and Fig.11 In order to facilitate the maintenance of the grinding disc 2 without affecting its stability during use, the grinding disc 2 at least forms a staggered abutment with the middle frame 13 along the axial direction of the rotating shaft 40. There are many ways of "staggered abutment", which can achieve the axial tight limit of the grinding disc 2 and the middle frame 13 when the grinding disc 2 and the grinding roller device 3 are crushing materials, and at the same time, it can not affect the rotation of the grinding disc 2 during maintenance or replacement.

[0089] Specifically, the grinding disc 2 is provided with a first abutting gear ring 25, and the middle frame 13 is provided with a second abutting gear ring 131; the first abutting gear ring 25 is rotatably connected with the second abutting gear ring 131, and a plurality of first abutting gear rings 25 and second abutting gear rings 131 are distributed in an array along the axial direction of the rotating shaft portion 40. Of course, in other embodiments, they can also be arranged at intervals.

[0090] Furthermore, in order to reduce the rotational resistance between the first clamping gear ring 25 and the second clamping gear ring 131 (during maintenance) while ensuring the clamping effect of the two (when crushing materials), the base frame 12 and the middle frame 13 are connected by a telescopic drive member 6; the telescopic drive member 6 has a fixed lower end 61 and a telescopic upper end 62 that are relatively arranged, the fixed lower end 61 is fixedly connected to the base frame 12, and the telescopic upper end 62 is fixedly connected to the middle frame 13, so that after the turntable 2 rotates to a position relative to the grinding roller device 3, the telescopic drive member 6 can axially tighten the middle frame 13, thereby making the first clamping gear ring 25 and the second clamping gear ring 131 clamped.

[0091] Furthermore, the present device also includes a locking device 7, which includes a rotating driving member 71 and a rotating locking block 72 rotatably mounted on the rotating driving member 71; the rotating driving member 71 is fixed to the upper end of the middle frame 13; the rotating locking block 72 has a third tightening gear ring 721, and the third tightening gear ring 721 has an unlocking state of rotating away from the first tightening gear ring 25, and a locking state of rotating to be offset and tightened with the first tightening gear ring 25.

[0092] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A roller sand making machine, characterized in that: include, Subject (1); The grinding disc (2) is provided with at least a first grinding disc surface (201) and a second grinding disc surface (202) from top to bottom; A grinding roller device (3) comprising a grinding roller end surface (301) and a grinding roller inclined surface (302), wherein a first grinding channel (101) is formed between the grinding roller end surface (301) and the first grinding disc surface (201), and a second grinding channel (102) is formed between the grinding roller inclined surface (302) and the second grinding disc surface (202); The driving device (4) comprises a rotating shaft portion (40), the grinding roller device (3) is connected to the rotating shaft portion (40), and the central axis of the grinding roller device (3) is perpendicular to the first grinding disc surface (201) and forms a preset angle with the central axis of the rotating shaft portion (40), and the preset angle is an acute angle; A pressure-maintaining device (5) is connected to the grinding disc (2) or the grinding roller device (3) to at least adjust the spacing of the second grinding channel (102).

2. A roller sand making machine according to claim 1, characterized in that: The grinding roller devices (3) are distributed in a circumferential direction around the rotating shaft portion (40); Each grinding roller device (3) comprises a mounting shaft (31), a grinding roller (32) and a driving member; One end of the installation shaft (31) is fixedly connected to the rotating shaft portion (40), and the other end is rotatably connected to the grinding roller (32); The driving member is mounted on the mounting shaft (31) and is used to drive the grinding roller (32) to rotate.

3. A roller sand making machine according to claim 1, characterized in that: The central axis of the rotating shaft portion (40) is perpendicular to the horizontal plane; An obtuse angle is formed between the first grinding disc surface (201) and the second grinding disc surface (202); The preset angle has a value range of 60° to 80°.

4. A roller sand making machine according to claim 1, characterized in that: The first grinding disc surface (201) is parallel to the grinding roller end surface (301); The second grinding disc surface (202) is parallel to the grinding roller inclined surface (302); The distance H1 between the first grinding disc surface (201) and the end surface of the grinding roller is greater than the distance H2 between the second grinding disc surface (202) and the inclined surface (302) of the grinding roller.

5. A roller sand making machine according to any one of claims 1 to 4, characterized in that: The pressure-maintaining device (5) comprises a telescopic end (51) and a fixed end (52) which are arranged opposite to each other; The telescopic end (51) has a preset bearing pressure, and the telescopic end (51) is configured to drive the grinding disc (2) to move away from the grinding roller device (3) when the real-time pressure on the grinding disc (2) exceeds the preset bearing pressure. or, The driving device (4) comprises a grinding roller mounting shaft (42) driven by the rotating shaft portion (40); the telescopic end (51) is connected to the grinding roller mounting shaft (42) and has a motion state of driving the grinding roller mounting shaft (42) to move axially to adjust the spacing between the first grinding channel (101) and the second grinding channel (102).

6. A roller sand making machine according to claim 5, characterized in that: The main body (1) comprises an outer shell (11) fixedly connected into one body. The outer shell (11) is formed with a horizontal mounting platform (111), and the fixed end (52) is fixedly mounted on the horizontal mounting platform (111); The upper end of the outer shell (11) is connected to a feeding device (8), and the discharge end of the feeding device (8) faces the first grinding channel (101).

7. A roller sand making machine according to claim 5, characterized in that: The main body (1) comprises a base frame (12), a middle frame (13) and an upper shell (14) which are arranged in a split manner; The middle frame (13) is mounted on the upper end of the base frame (12), the upper shell (14) is mounted on the upper end of the middle frame (13), the grinding disc (2) is rotatably mounted on the upper shell (14), and the upper end of the upper shell (14) is fixedly connected to a feeding device (8).

8. A roller sand making machine according to claim 7, characterized in that: The grinding disc (2) is rotatably mounted on the upper housing (14); Along the axial direction of the rotating shaft portion (40), the grinding disc (2) at least forms an offset abutment with the middle frame (13).

9. A roller sand making machine according to claim 5, characterized in that: The driving device (4) further comprises a power unit (41) for driving the rotating shaft unit (40) to rotate; The power part (41) comprises at least two power components (411), and the power components (411) are symmetrically distributed with respect to the rotating shaft part (40).

10. A roller sand making machine according to claim 5, characterized in that: The driving device (4) further comprises a power unit (41); The rotating shaft portion (40) comprises a fixed vertical shaft (405) and a rotating shaft (406), wherein the fixed vertical shaft (405) is fixedly connected to the main body (1), and the rotating shaft (406) is connected to the fixed vertical shaft (405) in an axially sliding manner; The pressure-maintaining device (5) is fixedly mounted on the fixed vertical shaft (405), and the lower end of the rotating shaft (406) is driven by the power unit (41).

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