Vertical grinding machine

Abstract

The utility model provides a vertical grinding machine. The vertical grinding machine comprises a base, a barrel, a grinding assembly and a plurality of slurry outlet devices, a plurality of slurry outlets are formed in the side wall of the barrel in the circumferential direction, and each slurry outlet corresponds to one slurry outlet device; the slurry outlet device comprises a sieve plate arranged in the slurry outlet, a slurry storage box mounted on the side wall of the cylinder body, a flushing pipe mounted in the slurry storage box and a slurry outlet pipe connected to the bottom of the slurry storage box, and the slurry outlet, the slurry storage box and the slurry outlet pipe are communicated; the soybean milk storage box comprises a box body with openings in the two sides, the opening in one side is formed in the soybean milk outlet, a box door cover is installed at the opening in the other side, an observation door cover which is opened or closed in a hinged mode is arranged on the top wall of the box body, and the soybean milk outlet pipe is connected to the bottom wall of the box body. According to the utility model, the pulp outlet area of the cylinder body is greatly increased, the requirement of large yield is met, and the discharging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mineral processing, in particular to a vertical grinding machine. Background Art

[0002] In the process of mineral processing, it is usually necessary to crush the raw ore to obtain small particles, then grind the small particles to obtain coarse powder, and then further grind the coarse powder to obtain micron-level ultrafine powder. The grinding of ultrafine powder is generally achieved by a grinder.

[0003] Existing grinding machines, such as the vertical wet ball mill disclosed in the existing patent announcement number CN105032563A, include a motor, a reducer, a cylinder and a base. The base is installed at the bottom of the cylinder, and a slurry outlet is provided at the lower side wall of the cylinder. The motor drives the agitator inserted into the cylinder to operate. A slurry outlet is installed on the slurry outlet, and the slurry outlet includes a box, a slurry outlet stirring blade and a screen plate installed on the side wall of the box. The screen plate allows the slurry to be filtered first when entering the slurry outlet.

[0004] The grinding machine has the following problems:

[0005] (1) The structure of the pulp discharge device limits the pulp discharge area;

[0006] (ii) The screen plate is set in the box, screening is carried out in the box, and sand discharge is also carried out in the box;

[0007] (3) The structure of the box is not convenient for manual inspection;

[0008] (iv) The structure of the box easily causes coarse particles to clog the screen plate and the box. Utility Model Content

[0009] The utility model aims to provide a vertical grinding machine, which can increase the pulp discharge area and facilitate manual inspection.

[0010] The technical scheme of the utility model is: a vertical grinding machine, comprising a base, a cylinder mounted on the base, a grinding assembly rotatably arranged in the cylinder, and a plurality of pulp discharging devices, a plurality of pulp discharging ports are circumferentially arranged on the side wall of the cylinder, and a pulp discharging device is arranged corresponding to each pulp discharging port; the pulp discharging device comprises a screen plate arranged in the pulp discharging port, a pulp storage box mounted on the side wall of the cylinder, a flushing pipe installed inside the pulp storage box, and a pulp discharging pipe connected to the bottom of the pulp storage box, and the pulp discharging port, the pulp storage box and the pulp discharging pipe are connected;

[0011] The slurry storage box includes a box body with openings on both sides, one opening is installed on the slurry outlet, and a box door cover is installed at the other opening. The top wall of the box body is provided with an observation door cover that is opened or closed in a hinged manner, and the slurry outlet pipe is connected to the bottom wall of the box body.

[0012] In the above scheme, multiple slurry discharge devices are arranged circumferentially on the cylinder, which greatly increases the slurry discharge area of ​​the cylinder, meets the needs of large production, and improves the discharge efficiency; the screen plate is no longer arranged in the box body, but is embedded in the slurry outlet, so that the material is screened in the cylinder and then enters the slurry storage box; and an observation door cover is hingedly arranged on the top of the slurry storage box to facilitate manual inspection.

[0013] Preferably, a plurality of screen wires with triangular cross sections are arranged on the screen plate, and the vertices of the triangular screen wires are arranged toward the slurry storage box.

[0014] Preferably, the flushing pipe is arranged near the top of the slurry storage box.

[0015] Preferably, the grinding assembly comprises a grinding shaft, a grinding disc and a spacer sleeve. The grinding shaft is vertically installed in the cylinder body. A plurality of grinding discs are arranged on the grinding shaft at intervals, and the spacer sleeve is arranged between two adjacent grinding discs.

[0016] Preferably, the grinding disc comprises a grinding sleeve, a plurality of grinding rods are circumferentially connected to the grinding sleeve, the grinding sleeve is sleeved on the grinding shaft, and the grinding rods extend in the radial direction of the grinding sleeve.

[0017] Preferably, the grinding rod includes a first rod, a second rod and a stop screw, one end of the first rod is fixed to the grinding sleeve, the other end of the first rod is internally mounted with the second rod, the second rod is provided with an annular groove, and the stop screw is threadedly connected to the first rod and extends into the annular groove.

[0018] Preferably, the second rod is a high-chromium composite alloy wear-resistant rod, and the stop screw is carbon steel or stainless steel.

[0019] Preferably, a wear-resistant plate is provided on the surface of the base facing the cylinder.

[0020] Preferably, a plurality of baffles are circumferentially mounted on the inner wall of the cylinder, and the baffles are mounted on the side wall of the cylinder by wear-resistant screws.

[0021] Compared with the related art, the beneficial effects of the utility model are:

[0022] 1. The slurry discharge devices in the vertical grinding machine are arranged in a circle on the cylinder, which greatly increases the slurry discharge area of ​​the cylinder, meets the needs of large production, and improves the discharge efficiency;

[0023] Second, the screen plate is no longer set in the box, but embedded in the pulp outlet, so that the material is directly screened in the cylinder and then enters the pulp storage box;

[0024] 3. There are multiple triangular cross-section screen wires arranged on the screen plate. Once the material passes through the screen gaps between the triangular screen wires, it can flow away easily to avoid being stuck in the screen gaps, ensuring smooth slurry discharge without blockage;

[0025] Fourth, the grinding rod adopts a two-stage installation structure and can be made of suitable materials. For example, the second rod is made of high-chromium composite alloy material, which has the characteristics of high hardness and good wear resistance, and can improve the wear resistance of the grinding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a vertical grinding machine provided by the utility model;

[0027] Figure 2 A schematic diagram of the internal structure of the vertical grinding machine provided by the utility model;

[0028] Figure 3 It is a schematic diagram of the arrangement structure of the pulp discharge device on the cylinder;

[0029] Figure 4 It is a schematic diagram of the installation of a single pulp discharge device on the cylinder;

[0030] Figure 5 It is a schematic diagram of the planar layout of the grinding device;

[0031] Figure 6 for Figure 2 A is an enlarged schematic diagram;

[0032] Figure 7 It is the structural schematic diagram of the sieve plate;

[0033] Figure 8 along Figure 7 BB cross-sectional view in FIG.

[0034] Fig. 9 for Figure 8 The enlarged schematic diagram of point C in FIG.

[0035] Fig.10 Schematic diagram of the working principle of the baffle.

[0036] In the attached drawings: 1. base; 11. wear-resistant plate; 2. cylinder; 21. slurry outlet; 22. air vent; 23. observation port; 24. overflow port; 25. feed port; 26. sand outlet; 3. grinding assembly; 31. grinding shaft; 32. grinding disc; 321. grinding sleeve; 322. grinding rod; 3221. first rod; 3222. second rod; 3223. stop screw; 3224. mounting hole; 32241. waist edge; 32242. side edge; 323. locking round nut; 33. spacer; 4. slurry outlet device; 41. sieve plate; 411. sieve wire; 42. slurry storage box; 421. box body; 422. box door cover; 423. observation door cover; 43. flushing pipe; 44. slurry outlet pipe; 5. baffle; 6. wear-resistant screw; 7. motor; 8. reducer. DETAILED DESCRIPTION

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0038] like Figure 1 , Figure 2 As shown, a vertical grinding machine provided in this embodiment includes a base 1, a cylinder 2, a grinding assembly 3, a slurry discharge device 4, a baffle 5, a wear-resistant screw 6, a sealing ring 7, a motor 7 and a reducer 8.

[0039] The bottom of the cylinder 2 is open and is used to be installed on the base 1. The side surface of the base 1 facing the cylinder is equipped with a wear-resistant plate 11. The base 1 is fixed to the concrete foundation by anchor bolts. A vent 22 is provided on the top wall of the cylinder 2, and an observation port 23 and an overflow port 24 are provided on the side wall of the cylinder 2. A feed port 25 is provided near the middle of the cylinder 2, and a sand discharge port 26 is provided near the bottom. The sand discharge port 26 is used to discharge useless coarse particles in the cylinder 2.

[0040] like Figure 2 As shown, the grinding assembly 3 includes a grinding shaft 31, a grinding disc 32 and a spacer 33. The reducer 8 and the motor 7 are installed on the top wall of the cylinder 2. The output shaft of the reducer 8 is connected to the upper end of the grinding shaft 31 through a coupling. The grinding shaft 31 is vertically installed in the cylinder 2. The reducer 8 is installed with the reducer seat through the lower flange thereon, and the reducer seat is fixed on the top wall of the cylinder 2.

[0041] like Figure 2 , Figure 3As shown, a plurality of slurry discharge devices 4 are arranged in a circumferential manner on the upper side wall of the cylinder 2. A plurality of grinding discs 32 are arranged at intervals on the grinding shaft 31 at the lower end of the slurry discharge device 4. The spacer 33 is arranged between two adjacent grinding discs 32. By selecting the spacer 33 of a suitable length, the spacing between the grinding discs 32 can be adjusted to be appropriate, so that the stirring range of each layer of grinding discs 32 does not cross as much as possible, so that the grinding materials are not mixed back and over-grinded.

[0042] like Figure 2 , Figure 5 As shown, the grinding disc 32 includes a grinding sleeve 321, and a plurality of grinding rods 322 are circumferentially connected to the grinding sleeve 321. The grinding sleeve 321 is sleeved on the grinding shaft 31, and the grinding sleeve 321 on the grinding disc 32 at the bottom is a locking grinding sleeve, which is locked by a locking round nut 323 to achieve the fixation of the plurality of grinding discs 32 on the grinding shaft 31.

[0043] The grinding rod 322 extends in the radial direction of the grinding sleeve 321, so that the outer edge of the grinding disc 32 has a large linear speed and a large stirring kinetic energy. Under the action of centrifugal force, the grinding medium and the material naturally form a distribution of the grinding medium in an axial rotating flow field, with coarse particles at the outer edge of the grinding disc 32 and fine particles at the center of the grinding disc 32. Under the action of gravity, the coarse particles are at the bottom and the fine particles are at the top, forming an open laminar grinding feature.

[0044] like Figure 2 As shown, the grinding rod 322 includes a first rod 3221, a second rod 3222 and a stop screw 3223. The second rod 3222 is a high chromium composite alloy wear-resistant rod, and the stop screw 3223 is made of carbon steel or stainless steel. One end of the first rod 3221 is fixed to the grinding sleeve 321 by welding, and one end of the second rod 3222 is inserted into the other end of the first rod 3221. The two are connected by threads and are fixed to prevent loosening by the stop screw 3223. Figure 6 As shown, a ring groove is provided on the second rod 3222, and the stop screw 3223 is threadedly connected to the first rod 3221 and extends toward the ring groove. When the stop screw 3223 is engaged with the ring groove, a stable connection between the second rod 3222 and the first rod 3221 is achieved. Conversely, when the stop screw 3223 is disengaged from the ring groove, the second rod 3222 can be removed.

[0045] In this embodiment, 2-8 layers of grinding discs 32 are arranged on the grinding shaft 31, and the grinding sleeve 321 is connected to the grinding shaft 31 through a flat key to transmit torque. 4-8 grinding rods 322 are arranged on each layer of grinding discs 32, and a stop screw is arranged between the second rod 3222 and the first rod 3221 to prevent loosening.

[0046] like Figure 3 , Figure 4As shown, a plurality of pulp outlets 21 are circumferentially provided on the side wall of the cylinder 2, and a pulp outlet device 4 is provided corresponding to each pulp outlet 21. The pulp outlet device 4 comprises a screen plate 41 provided in the pulp outlet 21, a pulp storage box 42 installed on the side wall of the cylinder 2, a flushing pipe 43 installed inside the pulp storage box 42, and a pulp outlet pipe 44 connected to the bottom of the pulp storage box 42. The pulp outlet 21, the pulp storage box 42 and the pulp outlet pipe 44 are connected.

[0047] The slurry storage box 42 includes a box body 421 with openings on both sides, one of which is installed on the slurry outlet 21, and a box door cover 422 is installed at the other opening. The top wall of the box body 421 is provided with an observation door cover 423 that is opened or closed in a hinged manner. One end of the slurry outlet pipe 44 is annular on the outer wall of the cylinder 2, and a branch pipe is provided corresponding to the position of each slurry storage box 42. The branch pipe is connected to the bottom wall of the box body 421, and the other end of the slurry outlet pipe 44 extends to the next process. The flushing pipe 43 is provided near the top of the slurry storage box 42.

[0048] In this embodiment, 3 to 8 slurry discharge devices 4 are arranged on the side wall of the cylinder 2. The ground slurry is screened by the screen plate 41 and flows out from the lower part of the slurry storage box 42, converges to the slurry discharge pipe 44 and then enters the next process.

[0049] like Figure 7 , Figure 8 As shown, the sieve plate 41 is provided with a plurality of sieve wires 411 having a triangular cross section, and the sieve wires 411 extend transversely. Fig. 9 As shown, the apex of the triangular screen wire 411 is arranged toward the slurry storage box 42, so that once the material passes through the screen gap, it can easily flow away and will not be stuck in the screen gap, ensuring smooth slurry discharge without blockage.

[0050] like Fig.10 As shown, a plurality of baffles 5 are circumferentially mounted on the inner wall of the cylinder 2, and the baffles 5 are mounted on the side wall of the cylinder 2 by wear-resistant screws 6. When the grinding disc 32 drives the grinding rod to rotate, the grinding medium and the grinding material inside the cylinder 2 are stirred to form a flow field, and the baffles 5 arranged in a circle partially block the flow of the grinding material and the grinding medium, forming a local turbulence, so that the grinding medium and the grinding material undergo relative movement and friction, etc., and the grinding material is ground into fine powder.

[0051] When in use, the crushed ore particles (less than 5 mm) are uniformly and continuously fed into the cylinder 2 from the feed port 25 through a belt scale, or the coarse slurry of the coarse grinding equipment enters from the feed port 25. At the same time, a certain proportion of water and grinding aids are added. The motor 7 is started to rotate the grinding shaft 31 and the grinding disc 32 thereon, and the grinding rod 322 fully grinds, impacts, and shears the grinding media and ore particles in the cylinder 2, so that the ore particles are continuously ground. Finally, the ground slurry flows out from the slurry discharge device 4 and enters the next process.

[0052] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vertical grinding machine, comprising a base, a cylinder mounted on the base, and a grinding assembly rotatably arranged in the cylinder, characterized in that: It also includes a plurality of pulp discharging devices, wherein a plurality of pulp discharging ports are provided on the side wall of the cylinder along the circumferential direction, and each pulp discharging port is provided with a corresponding pulp discharging device; the pulp discharging device includes a screen plate provided in the pulp discharging port, a pulp storage box installed on the side wall of the cylinder, a flushing pipe installed inside the pulp storage box, and a pulp discharging pipe connected to the bottom of the pulp storage box, and the pulp discharging port, the pulp storage box and the pulp discharging pipe are connected; The slurry storage box includes a box body with openings on both sides, one opening is installed on the slurry outlet, and a box door cover is installed at the other opening. The top wall of the box body is provided with an observation door cover that is opened or closed in a hinged manner, and the slurry outlet pipe is connected to the bottom wall of the box body.

2. The vertical grinding machine according to claim 1, characterized in that: A plurality of screen wires with triangular cross sections are arranged on the screen plate, and the vertices of the triangular screen wires are arranged toward the slurry storage box.

3. The vertical grinding machine according to claim 1, characterized in that: The flushing pipe is arranged near the top of the slurry storage box.

4. The vertical grinding machine according to claim 1, characterized in that: The grinding assembly comprises a grinding shaft, a grinding disc and a spacer sleeve. The grinding shaft is vertically installed in the cylinder body. A plurality of grinding discs are arranged on the grinding shaft at intervals, and the spacer sleeve is arranged between two adjacent grinding discs.

5. The vertical grinding machine according to claim 4, characterized in that: The grinding disc comprises a grinding sleeve, on which a plurality of grinding rods are circumferentially connected. The grinding sleeve is sleeved on the grinding shaft, and the grinding rods extend in the radial direction of the grinding sleeve.

6. The vertical grinding machine according to claim 5, characterized in that: The grinding rod includes a first rod, a second rod and a stop screw, one end of the first rod is fixed on the grinding sleeve, the other end of the first rod is internally sleeved with the second rod, an annular groove is provided on the second rod, and the stop screw is threadedly connected to the first rod and extends into the annular groove.

7. The vertical grinding machine according to claim 6, characterized in that: The second rod is a high-chromium composite alloy wear-resistant rod, and the stop screw is made of carbon steel or stainless steel.

8. The vertical grinding machine according to claim 1, characterized in that: A wear-resistant plate is arranged on the surface of the base facing the cylinder.

9. The vertical grinding machine according to claim 1, characterized in that: A plurality of baffles are circumferentially mounted on the inner wall of the cylinder, and the baffles are mounted on the side wall of the cylinder through wear-resistant screws.

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