Vertical mill powder feeding and mixing system

Abstract

The utility model relates to the technical field of vertical mills, and discloses a vertical mill powder feeding and mixing system which is composed of a bottom plate, a millstone, a milling hammer, a rotating shaft, a material guide cone, a blanking hopper, a discharging pipe and the like, a fixing plate is fixedly connected to the lower portion of the inner side wall of the discharging pipe, and a connecting rod is fixedly connected to the middle of the bottom face of the fixing plate in a sleeved mode. A reciprocating thread is arranged on the connecting rod, the outer surface of the connecting rod is sleeved with a reciprocating sliding plate I in a transmission mode through the reciprocating thread, an elastic film is fixedly connected to the middle of the side wall of the reciprocating sliding plate I, and the bottom end of the elastic film is fixedly connected with the top face of a grinding disc. When unqualified particles are screened out by the powder concentrator and discharged through the guide cone, the blanking hopper and the discharge pipe, the particles can directly fall on the reciprocating sliding plate I and the elastic film, and the outer surface of the elastic film is an inclined surface, so that the unqualified particles can roll to the grinding hammer through the outer surface of the elastic film and enter the grinding track of the grinding hammer, and the grinding effect is improved. And the rapid grinding effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mills, in particular to a vertical mill powder feeding and mixing system. 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] During the use of the existing vertical mill, the ground powder will be carried by the airflow to the powder selector for separation. At this time, qualified powder will be discharged through the powder discharge pipe, and unqualified particles will fall onto the guide cone and the drop hopper, and finally fall to the middle of the grinding disc through the discharge pipe. The grinding hammer is at the edge of the grinding disc. Therefore, the fallen particles will not directly enter the grinding track of the grinding hammer. The previously fallen particles can only be squeezed to the grinding track of the grinding hammer through the continuous accumulation of later particles, thereby affecting the grinding efficiency. Secondly, some qualified powder is easily pressed by the particles, which makes it difficult for the qualified powder to be carried away by the airflow, so that the processing efficiency is affected. Utility Model Content

[0004] In view of the shortcomings of the existing vertical mills, the utility model provides a vertical mill powder feeding and mixing system, which has the advantages of ensuring that the particles discharged from the discharge pipe quickly enter the grinding track of the grinding hammer, improving the grinding efficiency, causing the powder pressed by the particles to be lifted up, making it easier for qualified powder to be carried away by the airflow, and improving the processing efficiency, and solving the technical problems such as the inability of particles to quickly enter the grinding track of the grinding hammer.

[0005] The utility model provides the following technical solution: a vertical mill powder feeding and mixing system, 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 housing, 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 driver is fixedly mounted on the middle of the top surface of the housing, a rotating shaft is fixedly welded to the output end of the driver, 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] A connecting rod, fixedly sleeved on the middle part of the bottom surface of the fixing plate;

[0012] A reciprocating thread is arranged on the connecting rod.

[0013] Preferably, the connecting rod comprises:

[0014] A reciprocating slide plate I is sleeved on the outer surface of the connecting rod through a reciprocating thread transmission;

[0015] The elastic membrane is fixedly connected to the middle part of the side wall of the reciprocating slide plate I, and the bottom end of the elastic membrane is fixedly connected to the top surface of the grinding disc.

[0016] Preferably, the fixing plate comprises:

[0017] Limit rods, fixedly connected to the bottom surface of the fixing plate and located on both sides of the connecting rod;

[0018] An elastic block, fixedly sleeved on the middle part of the outer surface of the limiting rod;

[0019] A conical hole is provided on the reciprocating slide plate I, and the limit rod is slidably sleeved with the reciprocating slide plate I through the conical hole.

[0020] Preferably, the grinding disc comprises:

[0021] A fixed cone, fixedly connected to the middle of the top surface of the grinding disc;

[0022] An active cavity is provided inside the fixed cone;

[0023] The reciprocating slide plate II is slidably connected inside the movable cavity, and the reciprocating slide plate II is transmission sleeved with the connecting rod through a reciprocating thread.

[0024] Preferably, the reciprocating slide plate II includes:

[0025] An air bag, fixedly connected to the bottom surface of the reciprocating slide plate II;

[0026] A through groove is provided inside the fixing cone, and the through groove connects the air bag with the inner side of the elastic membrane.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] 1. By designing the fixed plate, connecting rod, reciprocating thread, reciprocating slide plate I and elastic membrane, when unqualified particles are screened out by the powder selector and discharged through the guide cone, drop hopper and discharge pipe, the particles will directly fall on the reciprocating slide plate I and the elastic membrane. Since the outer surface of the elastic membrane is an inclined surface, the unqualified particles will roll down to the grinding hammer through the outer surface of the elastic membrane, and then enter the grinding track of the grinding hammer, achieving the effect of rapid grinding.

[0029] 2. By designing a limit rod, an elastic block and a tapered hole, when the discharge pipe rotates, the connection of the fixed plate is utilized to make the connecting rod rotate synchronously with the discharge pipe. At this time, the reciprocating thread on the connecting rod is utilized to cause the reciprocating slide plate I to reciprocate up and down. When the reciprocating slide plate I moves to the elastic block, since the reciprocating slide plate I must pass over the elastic block, the design of the tapered hole is utilized to cause the elastic block to deform when passing through the tapered hole. After the elastic block passes over the tapered hole, the deformation of the elastic block causes the reciprocating slide plate I to vibrate. Since the reciprocating slide plate I is fixedly connected to the elastic membrane, the vibration of the reciprocating slide plate I will act on the elastic membrane, causing the elastic membrane to vibrate as well. The vibration of the elastic membrane is utilized to cause the powder pressed by the particles to be lifted up, thereby ensuring that the qualified powder is carried away by the airflow.

[0030] 3. By designing the fixed cone, the movable cavity, the reciprocating slide plate II and the air bag, when the connecting rod rotates, the reciprocating slide plate II will make reciprocating motion up and down inside the movable cavity through the cooperation of the reciprocating thread and the reciprocating slide plate II. When the reciprocating slide plate II moves down, the reciprocating slide plate II will squeeze the air bag, so that the gas inside the air bag is discharged through the through groove and finally hits the inner side of the elastic membrane, causing the elastic membrane to expand. At this time, the particles falling through the discharge pipe will be directly bounced away by the expanded elastic membrane, so that the particles can quickly enter the grinding track of the hammer, thereby improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the vertical mill of the utility model;

[0033] Figure 3 This is a schematic diagram of the internal structure of the discharge pipe of the utility model;

[0034] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0035] Figure 5 It is a schematic diagram of the internal structure of the fixed cone of the utility model.

[0036] In the figure: 1, bottom plate; 2, driving device; 3, speed reduction device; 4, supporting plate; 5, grinding plate; 51, fixed cone; 52, movable chamber; 53, reciprocating slide plate II; 54, air bag; 55, through groove; 6, casing; 7, mounting rod; 8, grinding hammer; 9, driver; 10, rotating shaft; 11, powder classifier; 12, guide cone; 13, fixed rod; 14, drop hopper; 15, discharge pipe; 151, fixed plate; 152, connecting rod; 153, reciprocating thread; 154, reciprocating slide plate I; 155, elastic membrane; 156, limit rod; 157, elastic block; 158, tapered hole; 16, feed pipe; 17, powder discharge pipe. DETAILED DESCRIPTION

[0037] 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.

[0038] See also Figure 1-Figure 5 A vertical mill powder feeding and mixing system 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, the outer surface of the grinding hammer 8 is in contact with the top surface of the grinding disc 5, and the top surface of the casing 6 is fixedly installed on the inner side wall of the casing 6. A driver 9 is fixedly installed on the top, a rotating shaft 10 is fixedly welded on the output end of the driver 9, a powder classifier 11 is fixedly sleeved on the outer surface of the rotating shaft 10, a material guide cone 12 is fixedly sleeved on the bottom end of the rotating shaft 10, a fixing rod 13 is fixedly welded on the outer surface of the material guide cone 12, a drop hopper 14 is fixedly welded on the end of the fixing rod 13 away from the material guide cone 12, a discharge pipe 15 is fixedly welded on the middle part of the bottom surface of the drop hopper 14, a feed pipe 16 is fixedly installed on the middle part of the right side surface of the casing 6, and a powder discharge pipe 17 is fixedly installed on the left side of the top surface of the casing 6.

[0039] See also Figure 1-Figure 5 A fixing plate 151 is fixedly welded to the lower part of the inner wall of the discharge pipe 15, and a connecting rod 152 is fixedly sleeved in the middle of the bottom surface of the fixing plate 151 to ensure that when the discharge pipe 15 rotates, the connecting rod 152 can be driven to rotate synchronously through the fixing plate 151, and a reciprocating thread 153 is provided on the connecting rod 152.

[0040] See also Figure 1-Figure 5 The outer surface of the connecting rod 152 is connected with a reciprocating slide plate Ⅰ154 through a reciprocating thread 153, so that when the connecting rod 152 rotates, the reciprocating thread 153 can cause the reciprocating slide plate Ⅰ154 to reciprocate up and down. An elastic membrane 155 is fixedly connected to the middle of the side wall of the reciprocating slide plate Ⅰ154, and the bottom end of the elastic membrane 155 is fixedly connected to the top surface of the grinding disc 5, so that the reciprocating slide plate Ⅰ154 can stretch the elastic membrane 155 when it reciprocates up and down.

[0041] See also Figure 1-Figure 5 The bottom surface of the fixed plate 151 is located on both sides of the connecting rod 152 and fixedly welded with a limiting rod 156. The middle of the outer surface of the limiting rod 156 is fixedly sleeved with an elastic block 157. A conical hole 158 is opened on the reciprocating slide plate Ⅰ154. The limiting rod 156 is slidably sleeved with the reciprocating slide plate Ⅰ154 through the conical hole 158, ensuring that the conical hole 158 can be used to move the elastic block 157 when the reciprocating slide plate Ⅰ154 reciprocates up and down, so that the reciprocating slide plate Ⅰ154 vibrates.

[0042] See also Figure 1-Figure 5 A fixed cone 51 is fixedly welded to the middle of the top surface of the grinding disc 5, and an active cavity 52 is opened inside the fixed cone 51. A reciprocating slide plate II 53 is slidably connected inside the active cavity 52. ​​The reciprocating slide plate II 53 is transmission-sleeved with the connecting rod 152 through a reciprocating thread 153, so that the reciprocating slide plate II 53 can reciprocate up and down in the active cavity 52.

[0043] See also Figure 1-Figure 5 An airbag 54 is fixedly connected to the bottom surface of the reciprocating slide plate II 53 to ensure that the airbag 54 can be squeezed when the reciprocating slide plate II 53 moves downward. A through groove 55 is opened inside the fixed cone 51, and the through groove 55 connects the airbag 54 with the inner side of the elastic membrane 155, so that after the airbag 54 is squeezed, the gas in the airbag 54 can be transmitted to the inner side of the elastic membrane 155 through the through groove 55, causing the elastic membrane 155 to expand.

[0044] Working principle: When the vertical mill is running, the raw material is first introduced into the interior of the housing 6 through the feed pipe 16, and then the drive device 2 and the driver 9 are turned on. The drive device 2 drives the grinding disc 5 to rotate through the reduction device 3, and the driver 9 drives the rotating shaft 10 and the powder selector 11 to rotate. The rotating shaft 10 drives the drop hopper 14 and the discharge pipe 15 to rotate through the guide cone 12 and the fixed rod 13. The raw material entering the housing 6 will fall on the grinding disc 5, and then the grinding disc 5 and the grinding hammer 8 cooperate to cause the raw material to be ground into powder. The powder will be carried by the airflow entering the housing 6 and finally discharged through the powder discharge pipe 17, while the unqualified particles carried by the airflow will be blocked by the powder selector 11 and fall into the The unqualified particles are discharged from the discharge pipe 15 and directly fall on the reciprocating slide plate Ⅰ154 and the elastic membrane 155. Since the outer surface of the elastic membrane 155 is an inclined surface, the unqualified particles will roll down to the grinding hammer 8 through the outer surface of the elastic membrane 155, and then enter the grinding track of the grinding hammer 8, so as to achieve the effect of rapid grinding. At the same time, when the discharge pipe 15 rotates, the connection of the fixed plate 151 is used to make the connecting rod 152 rotate synchronously with the discharge pipe 15. At this time, the reciprocating thread 153 on the connecting rod 152 is used to promote the reciprocating slide plate Ⅰ154 When the reciprocating slide plate Ⅰ154 moves to the elastic block 157, the reciprocating slide plate Ⅰ154 must pass over the elastic block 157. At this time, the design of the conical hole 158 is used to make the elastic block 157 deform when passing through the conical hole 158. After the elastic block 157 passes over the conical hole 158, the deformation of the elastic block 157 will cause the reciprocating slide plate Ⅰ154 to vibrate. Since the reciprocating slide plate Ⅰ154 is fixedly connected to the elastic membrane 155, the vibration of the reciprocating slide plate Ⅰ154 will act on the elastic membrane 155, causing the elastic membrane 155 to vibrate as well, thereby using the vibration of the elastic membrane 155 to cause the particles to vibrate. The powder pressed by the particles is lifted up, thereby ensuring that qualified powder is taken away by the airflow. Secondly, when the connecting rod 152 rotates, the reciprocating thread 153 cooperates with the reciprocating slide plate Ⅱ53, so that the reciprocating slide plate Ⅱ53 will reciprocate up and down inside the active chamber 52. When the reciprocating slide plate Ⅱ53 moves down, the reciprocating slide plate Ⅱ53 will squeeze the airbag 54, so that the gas inside the airbag 54 is discharged through the through groove 55, and finally hits the inner side of the elastic membrane 155, causing the elastic membrane 155 to expand. At this time, the particles falling through the discharge pipe 15 will be directly bounced away by the expanded elastic membrane 155, so that the particles can quickly enter the grinding track of the grinding hammer 8, thereby improving the processing efficiency.

Claims

1. A vertical mill powder feeding and mixing system, 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 driver (9) is fixedly mounted in the middle of the top surface of the casing (6); a rotating shaft (10) is fixedly welded to the output end of the driver (9); and a powder classifier (11) is fixedly sleeved on the outer surface of the rotating shaft (10); A material guide cone (12) is fixedly sleeved on the bottom end of the rotating shaft (10); a fixing rod (13) is fixedly connected to the outer surface of the material guide cone (12); an end of the fixing rod (13) away from the material guide cone (12) is fixedly connected to a material drop hopper (14); a discharge pipe (15) is fixedly connected to the middle of the bottom surface of the material drop hopper (14); a feed pipe (16) is fixedly installed in the middle of the right side surface of the casing (6); and a powder discharge pipe (17) is fixedly installed on the left side of the top surface of the casing (6); The discharge pipe (15) comprises: A fixed plate (151) fixedly connected to the lower portion of the inner wall of the discharge pipe (15); A connecting rod (152) fixedly sleeved on the middle portion of the bottom surface of the fixing plate (151); A reciprocating thread (153) is arranged on the connecting rod (152); The connecting rod (152) comprises: A reciprocating slide plate I (154) is sleeved on the outer surface of the connecting rod (152) via a reciprocating thread (153); An elastic membrane (155) is fixedly connected to the middle of the side wall of the reciprocating slide plate I (154), and the bottom end of the elastic membrane (155) is fixedly connected to the top surface of the grinding disc (5); The outer surface of the elastic membrane (155) is an inclined surface.

2. A vertical mill powder feeding and mixing system according to claim 1, characterized in that: The fixing plate (151) comprises: Limit rods (156) fixedly connected to the bottom surface of the fixing plate (151) and located on both sides of the connecting rod (152); An elastic block (157) fixedly sleeved on the middle portion of the outer surface of the limiting rod (156); The tapered hole (158) is formed on the reciprocating slide plate I (154), and the limit rod (156) is slidably sleeved with the reciprocating slide plate I (154) through the tapered hole (158).

3. A vertical mill powder feeding and mixing system according to claim 2, characterized in that: The grinding disc (5) comprises: A fixed cone (51) fixedly connected to the middle of the top surface of the grinding disc (5); An active cavity (52) is provided inside the fixed cone (51); The reciprocating slide plate II (53) is slidably connected to the interior of the movable chamber (52), and the reciprocating slide plate II (53) is transmission-sleeved with the connecting rod (152) via a reciprocating thread (153).

4. A vertical mill powder feeding and mixing system according to claim 3, characterized in that: The reciprocating slide plate II (53) comprises: An air bag (54) fixedly connected to the bottom surface of the reciprocating slide plate II (53); A through groove (55) is provided inside the fixed cone (51), and the through groove (55) connects the air bag (54) with the inner side of the elastic membrane (155).

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