Feeding and mixing device of vertical mill

Abstract

The utility model relates to the technical field of vertical mills, and discloses a feeding and mixing device of a vertical mill, which comprises a bottom plate, a millstone, a milling hammer, a rotating shaft, a guide cone, a blanking hopper, a discharge pipe and the like, a fixed plate is fixedly connected to the lower part of the inner side wall of the discharge pipe, and a connecting rod is fixedly connected to the middle of the bottom surface of the fixed plate in a sleeving manner. The bottom end of the connecting rod is fixedly connected with an arc-shaped strip, the bottom face of the arc-shaped strip makes contact with the outer surface of the grinding disc, the portion, located on the upper side of the arc-shaped strip, of the outer surface of the connecting rod is fixedly sleeved with a fixing disc, and blades are fixedly connected to the outer surface of the fixing disc. The rotating shaft drives the material guiding cone to rotate, the material guiding cone drives the discharging pipe to rotate through the fixing rod, the discharging pipe drives the fixing plate, the connecting rod and the arc-shaped strip to rotate, and due to the fact that the arc-shaped strip makes contact with the surface of the grinding disc at the moment, raw materials in the middle of the grinding disc can be scraped to the grinding hammer in the rotating process of the arc-shaped strip; and the raw material grinding efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mills, in particular to a vertical mill feeding and mixing device. Background Art

[0002] Vertical roller mill, also known as vertical mill, is a kind of mill used for grinding cement raw materials, cement clinker, slag and coal slag. It has the characteristics of simple structure, low manufacturing and use cost. The motor of vertical roller mill drives the grinding disc to rotate through the reducer. The material falls from the feed port to the center of the grinding disc through the air lock feeder. After crushing, the material is carried by the high-speed airflow of the wind ring at the edge of the grinding disc. The large particles fall directly on the grinding disc for re-grinding. When the material in the air flow passes through the upper separator, under the action of the rotating rotor, the coarse powder falls from the cone bucket to the grinding disc for re-grinding, and the qualified fine powder is discharged from the mill with the air flow.

[0003] In the use of the existing vertical mill, since the raw materials fall directly into the middle of the grinding disc, and the grinding hammers perform crushing processing at the edge of the grinding disc, it is easy for the raw materials to be incompletely ground, and some of the ground powders are easily pressed on the lower side by the unground raw materials, which makes it difficult to discharge the ground powders, affecting the processing efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing vertical mill, the utility model provides a vertical mill feeding and mixing device, which has the advantages of being able to scrape the raw materials in the middle of the grinding disc to the grinding hammer for crushing, thereby improving the grinding efficiency, and causing the ground powder to fly through the rotation of the blades, so that it is brought to the powder outlet pipe by the airflow, thereby solving the technical problem that the raw materials in the middle of the grinding disc affect the grinding efficiency.

[0005] The utility model provides the following technical solution: a vertical mill feeding and mixing device, comprising a bottom plate, and also comprising:

[0006] A driving device is fixedly mounted on the left side of the top surface of the bottom plate, a reduction device is fixedly mounted on the middle of the top surface of the bottom plate, a support plate is fixedly mounted on the edge of the top surface of the reduction device, a grinding plate is rotatably mounted on the middle of the top surface of the reduction device, and a housing is fixedly mounted on the top surface of the support plate;

[0007] A mounting rod is fixedly mounted on the inner side wall of the casing, a grinding hammer is rotatably mounted on the outer surface of the mounting rod, the outer surface of the grinding hammer contacts the top surface of the grinding disc, a rotating shaft is rotatably mounted on the middle of the top surface of the inner cavity of the casing, and a powder classifier is fixedly sleeved on the outer surface of the rotating shaft;

[0008] A material guide cone is fixedly sleeved on the bottom end of the rotating shaft, a fixing rod is fixedly connected to the outer surface of the material guide cone, an end of the fixing rod away from the material guide cone is fixedly connected to a material drop hopper, a discharge pipe is fixedly connected to the middle of the bottom surface of the material drop hopper, a feed pipe is fixedly installed in the middle of the right side surface of the casing, and a powder discharge pipe is fixedly installed on the left side of the top surface of the casing.

[0009] Preferably, the discharge pipe comprises:

[0010] A fixed plate, fixedly connected to the lower portion of the inner wall of the discharge pipe;

[0011] The connecting rod is fixedly sleeved on the middle part of the bottom surface of the fixing plate.

[0012] Preferably, the connecting rod comprises:

[0013] The arc-shaped bar is fixedly connected to the bottom end of the connecting rod, and the bottom surface of the arc-shaped bar contacts the outer surface of the grinding disc.

[0014] Preferably, the connecting rod further includes:

[0015] A fixed plate, fixedly sleeved on the outer surface of the connecting rod and located on the upper side of the arc strip;

[0016] The blades are fixedly connected to the outer surface of the fixed disk.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. Through the design of fixed plates, connecting rods and arc strips, when the vertical mill is operating normally, the guide cone is driven to rotate through the rotating shaft, and the guide cone drives the discharge pipe to rotate through the fixed rod, causing the discharge pipe to drive the fixed plate, connecting rod and arc strip to rotate. Since the arc strip is in contact with the surface of the grinding disc at this time, the arc strip will scrape the raw materials in the middle of the grinding disc to the grinding hammer during the rotation process, thereby improving the efficiency of raw material grinding.

[0019] 2. By designing the fixed disk and blades, when the discharge pipe rotates, the fixed disk is driven to rotate through the fixed plate and the connecting rod, so that the fixed disk will drive the blades to rotate, and then the rotating blades are used to increase the air flow velocity on the upper side of the grinding disk, so that the powder pressed by the raw material is flying, and the flying powder is brought to the discharge pipe by the air flow, thereby increasing the discharge speed of the powder.

[0020] 3. By designing the fixed disc and blades, when large particles of raw materials are brought to the powder selector by the airflow, they will be blocked by the powder selector and fall on the guide cone, so that the large particles of raw materials will eventually be discharged to the upper side of the grinding disc through the drop hopper and the discharge pipe. At this time, due to the rotation of the blades, the blades will sweep away the large particles of raw materials, and then they will fall on the grinding hammer, further improving the efficiency of raw material grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the casing of the utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the discharge pipe of the utility model;

[0024] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1, bottom plate; 2, driving device; 3, reduction device; 4, supporting plate; 5, grinding plate; 6, casing; 7, mounting rod; 8, grinding hammer; 9, rotating shaft; 10, powder classifier; 11, guide cone; 12, fixing rod; 13, drop hopper; 14, discharge pipe; 141, fixing plate; 142, connecting rod; 143, arc strip; 144, fixing plate; 145, blades; 15, feed pipe; 16, powder discharge pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] See also Figure 1-Figure 4 A vertical mill feeding and mixing device comprises a bottom plate 1, a driving device 2 is fixedly installed on the left side of the top surface of the bottom plate 1, a speed reducer 3 is fixedly installed in the middle of the top surface of the bottom plate 1, a support plate 4 is fixedly installed at the edge of the top surface of the speed reducer 3, a grinding disc 5 is rotatably installed in the middle of the top surface of the speed reducer 3, a casing 6 is fixedly installed on the top surface of the support plate 4, a mounting rod 7 is fixedly installed on the inner side wall of the casing 6, a grinding hammer 8 is rotatably installed on the outer surface of the mounting rod 7, and the outer surface of the grinding hammer 8 is in contact with the top surface of the grinding disc 5. A rotating shaft 9 is rotatably installed in the middle of the top surface of the inner cavity of the casing 6, a powder classifier 10 is fixedly sleeved on the outer surface of the rotating shaft 9, a material guide cone 11 is fixedly sleeved on the bottom end of the rotating shaft 9, a fixing rod 12 is fixedly welded on the outer surface of the material guide cone 11, a material hopper 13 is fixedly welded on the end of the fixing rod 12 away from the material guide cone 11, a material discharge pipe 14 is fixedly welded on the middle of the bottom surface of the material hopper 13, a feeding pipe 15 is fixedly installed in the middle of the right side surface of the casing 6, and a powder discharge pipe 16 is fixedly installed on the left side of the top surface of the casing 6.

[0028] See also Figure 1-Figure 4A fixing plate 141 is fixedly welded to the lower part of the inner wall of the discharge pipe 14, and a connecting rod 142 is fixedly sleeved in the middle of the bottom surface of the fixing plate 141 to ensure that when the discharge pipe 14 rotates, the connecting rod 142 can be driven to rotate synchronously through the fixing plate 141.

[0029] See also Figure 1-Figure 4 The bottom end of the connecting rod 142 is fixedly welded with an arc strip 143, and the bottom surface of the arc strip 143 contacts the outer surface of the grinding disc 5, so that the connecting rod 142 drives the arc strip 143 to rotate, thereby scraping the raw material in the middle of the grinding disc 5 to the grinding hammer 8 for grinding, thereby improving the grinding efficiency.

[0030] See also Figure 1-Figure 4 The outer surface of the connecting rod 142 is located on the upper side of the arc strip 143 and is fixedly sleeved with a fixed disk 144. The outer surface of the fixed disk 144 is fixedly welded with blades 145 to ensure that when the blades 145 rotate, the air flow velocity on the upper side of the grinding disk 5 is increased, so that the powder on the grinding disk 5 is lifted up, and the lifted powder is brought to the powder outlet pipe 16 by the air flow for discharge.

[0031] Working principle: when the raw material needs to be ground, the driving device 2 is turned on, and the driving device 2 drives the grinding disc 5 to rotate through the reduction device 3, and then controls the rotating shaft 9 to drive the powder selector 10 to rotate, and at the same time the rotating shaft 9 drives the guide cone 11 to rotate, and the guide cone 11 drives the drop hopper 13 and the discharge pipe 14 to rotate through the fixed rod 12, and then the raw material is introduced into the interior of the casing 6 through the feed pipe 15, so that the grinding hammer 8 and the grinding disc 5 cooperate to grind the raw material into powder. In this process, the guide cone 11 is driven to rotate by the rotating shaft 9, and the guide cone 11 drives the discharge pipe 14 to rotate through the fixed rod 12, so that the discharge pipe 14 drives the fixed plate 141, the connecting rod 142 and the arc strip 143 to rotate. Since the arc strip 143 is in contact with the surface of the grinding disc 5 at this time, the arc strip 143 will scrape the raw material in the middle of the grinding disc 5 to the grinding hammer 8 during the rotation process, thereby improving the grinding effect. The efficiency of raw material grinding is improved. At the same time, when the discharge pipe 14 rotates, the fixed plate 144 is driven to rotate through the fixed plate 141 and the connecting rod 142, so that the fixed plate 144 will drive the blades 145 to rotate, and then the rotating blades 145 are used to increase the air flow speed on the upper side of the grinding disc 5, so that the powder pressed by the raw material is flying, so that the flying powder is brought to the powder discharge pipe 16 by the air flow, thereby increasing the discharge speed of the powder. Secondly, when the large-particle raw material is brought to the powder selector 10 by the air flow, the large-particle raw material will be blocked by the powder selector 10 and fall on the guide cone 11, so that the large-particle raw material will eventually be discharged on the upper side of the grinding disc 5 through the drop hopper 13 and the discharge pipe 14. At this time, due to the rotation of the blades 145, the blades 145 will sweep away the large-particle raw material, so that it falls on the grinding hammer 8, further improving the efficiency of raw material grinding.

Claims

1. A vertical mill feeding and mixing device, comprising a bottom plate (1), characterized in that: Also includes: A driving device (2) is fixedly mounted on the left side of the top surface of the bottom plate (1); a reduction device (3) is fixedly mounted in the middle of the top surface of the bottom plate (1); a support plate (4) is fixedly mounted at the edge of the top surface of the reduction device (3); a grinding plate (5) is rotatably mounted in the middle of the top surface of the reduction device (3); and a housing (6) is fixedly mounted on the top surface of the support plate (4); A mounting rod (7) is fixedly mounted on the inner side wall of the casing (6); a grinding hammer (8) is rotatably mounted on the outer surface of the mounting rod (7); the outer surface of the grinding hammer (8) contacts the top surface of the grinding disc (5); a rotating shaft (9) is rotatably mounted in the middle of the top surface of the inner cavity of the casing (6); a powder classifier (10) is fixedly sleeved on the outer surface of the rotating shaft (9); A material guide cone (11) is fixedly sleeved on the bottom end of the rotating shaft (9); a fixing rod (12) is fixedly connected to the outer surface of the material guide cone (11); an end of the fixing rod (12) away from the material guide cone (11) is fixedly connected to a material drop hopper (13); a discharge pipe (14) is fixedly connected to the middle of the bottom surface of the material drop hopper (13); a feed pipe (15) is fixedly installed in the middle of the right side surface of the casing (6); and a powder discharge pipe (16) is fixedly installed on the left side of the top surface of the casing (6); The discharge pipe (14) comprises: A fixed plate (141) fixedly connected to the lower portion of the inner wall of the discharge pipe (14); A connecting rod (142) fixedly sleeved on the middle portion of the bottom surface of the fixing plate (141); The connecting rod (142) comprises: The arc-shaped bar (143) is fixedly connected to the bottom end of the connecting rod (142), and the bottom surface of the arc-shaped bar (143) is in contact with the outer surface of the grinding disc (5).

2. A vertical mill feeding and mixing device according to claim 1, characterized in that: The connecting rod (142) also includes: A fixed plate (144) fixedly sleeved on the outer surface of the connecting rod (142) and located on the upper side of the arc strip (143); The blades (145) are fixedly connected to the outer surface of the fixed disk (144).

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