Milling tailing powder mixing device

Abstract

The utility model provides a mill tailing powder mixing device, and relates to the technical field of cement production, the mill tailing powder mixing device comprises a temporary storage bin, a rotor scale and a screw conveyor, the top end of the temporary storage bin is connected with a feeding pipeline, the bottom end of the temporary storage bin is provided with a discharging pipe, the discharging pipe is provided with a gate valve and a scattering structure, the rotor scale is arranged at the bottom end of the discharging pipe, and the screw conveyor is arranged on the rotor scale. The feeding pipe is arranged in the buffer bin and extends into a feeding port of the rotor scale, the spiral conveyor is arranged at a discharging port of the rotor scale and is used for conveying mineral powder to a tailing grinding trough, the mineral powder mixing device is simple in structure and reasonable in design, and the mineral powder in the buffer bin can be scattered by the aid of the scattering structure, so that mixing dispersity is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of cement production, and in particular to a device for adding grinding tailings powder. Background Art

[0002] Mineral powder (such as granulated blast furnace slag powder, fly ash, silica fume, etc.) has potential gelling activity or pozzolanic activity, and can undergo secondary reactions during cement hydration to generate more hydration products, thereby enhancing the mechanical properties of cement, especially the later strength. By adding mineral powder, the compressive strength, flexural strength, impermeability, durability, etc. of cement can be improved. Mineral powder is mostly industrial by-product or waste, and its price is usually lower than cement clinker. Adding it to cement as an admixture can reduce the production cost of cement. At the same time, cement mixed with mineral powder can reduce the comprehensive cost of concrete while maintaining or improving performance, which has obvious economic benefits for cement companies and concrete manufacturers.

[0003] In the prior art, composite mineral powder is added to the cement mill tailings to improve the performance of cement and concrete, while saving resources, protecting the environment, and achieving green and low-carbon production. However, mineral powder is easy to absorb moisture and agglomerate, especially in a humid environment, which will affect its fluidity, increase the difficulty of transportation, and even affect the performance of the cement after addition.

[0004] In view of this, the present application aims to provide a grinding tailings powder blending device to ensure that the mineral powder maintains good dispersion before blending. Summary of the invention

[0005] The purpose of the embodiments of the present application is to provide a device for adding tailings powder to a mill, which can solve the technical problem of the dispersion of mineral powder addition.

[0006] An embodiment of the present application provides a device for adding tailings powder to a mill, comprising a buffer bin, a rotor scale and a screw conveyor, wherein a feed pipe is connected to the top of the buffer bin, a discharge pipe is provided at the bottom of the buffer bin, a gate valve and a breaking structure are installed on the discharge pipe, the rotor scale is arranged at the bottom of the discharge pipe, and the discharge pipe extends into the feed inlet of the rotor scale, and the screw conveyor is arranged at the discharge port of the rotor scale, for conveying the mineral powder to the mill tailings trough.

[0007] Furthermore, the feed pipe is also provided with a blowing structure, and the blowing structure is located between the gate valve and the breaking up structure.

[0008] Furthermore, the blowing structure is provided with an air distribution pipe and a fan, the air distribution pipe is arranged in the discharge pipe, and one end of the air distribution pipe extends out of the discharge pipe and is connected to the fan.

[0009] Furthermore, the scattering structure is provided with a rotating shaft, scattering blades and a driving unit. The rotating shaft is arranged in the discharge pipe, and one end of the rotating shaft extends out of the discharge pipe and is rotatably connected to the tube wall of the discharge pipe through a bearing structure. The scattering blades are detachably mounted on the rotating shaft, and the driving unit is connected to one end of the rotating shaft extending out of the discharge pipe.

[0010] Furthermore, an anti-stick coating layer is provided on the breaking blades.

[0011] Furthermore, a load sensor is provided in the cache bin.

[0012] Furthermore, an electric butterfly valve is provided on the feed pipeline.

[0013] Furthermore, a supporting leg is provided at the bottom end of the cache bin, and a moving wheel with a brake structure is provided at the bottom end of the supporting leg.

[0014] Beneficial effects of the utility model:

[0015] The utility model provides a grinding tailings powder blending device, comprising a buffer bin, a rotor scale and a screw conveyor, wherein the top of the buffer bin is connected with a feed pipe, the bottom of the buffer bin is provided with a discharge pipe, a gate valve and a breaking up structure are installed on the discharge pipe, the rotor scale is arranged at the bottom of the discharge pipe, and the discharge pipe extends into the feed inlet of the rotor scale, the screw conveyor is arranged at the discharge port of the rotor scale, and is used for conveying the mineral powder to the grinding tailings trough. The utility model has a simple structure and a reasonable design, and by arranging the breaking up structure, the mineral powder in the buffer bin can be broken up, thereby ensuring the dispersion of the blending. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of some embodiments of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the air distribution duct in some embodiments of the utility model.

[0019] The reference numerals are:

[0020] Buffer bin 1, feed pipe 11, discharge pipe 12, gate valve 13, electric butterfly valve 14, support leg 15, rotor scale 2, screw conveyor 3, scattering structure 4, rotating shaft 41, scattering blades 42, driving unit 43, blowing structure 5, air distribution pipe 51, fan 52, load sensor 6. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] See also Figure 1 As shown, the mill tailings powder incorporation device described in this embodiment includes a buffer bin 1, a rotor scale 2 and a screw conveyor 3. The top of the buffer bin 1 is connected to a feed pipe 11, and the bottom of the buffer bin 1 is provided with a discharge pipe 12, on which a gate valve 13 and a breaking structure 4 are installed. The rotor scale 2 is arranged at the bottom of the discharge pipe 12, and the discharge pipe 12 extends into the feed inlet of the rotor scale. The screw conveyor 3 is arranged at the discharge port of the rotor scale 2, and is used to transport the mineral powder to the mill tailings trough.

[0028] This embodiment has a simple structure and a reasonable design. By providing a dispersing structure 4, the mineral powder in the buffer bin 1 can be dispersed, thereby ensuring the dispersion of the admixture.

[0029] On the basis of the above-mentioned embodiment, the feed pipe 12 is further provided with a blowing structure 5 , and the blowing structure 5 is located between the gate valve 13 and the breaking up structure 4 .

[0030] Specifically, the blowing structure 5 is provided with an air distribution pipe 51 and a fan 52 . The air distribution pipe 51 is arranged in the discharge pipe 12 , and one end of the air distribution pipe 51 extends out of the discharge pipe 12 and is connected to the fan 52 .

[0031] In this embodiment, by setting up the fan 52, the scattering structure 4 can be assisted to scatter the mineral powder to prevent it from agglomerating. For relatively moist or easily agglomerated mineral powder, hot air can be introduced to achieve a drying effect. At the same time, the scattering structure 4 can be used for dispersion, and the mineral powder adhering to the scattering structure 4 can be blown off, thereby achieving a better mineral powder incorporation effect. For details, see Figure 2 As shown, the air distribution duct 51 in this embodiment is annular to fit the inner wall of the discharge pipe 12 or be embedded in its inner wall, and is provided with a plurality of blowing ports, preferably embedded in the inner wall, to avoid material accumulation at the top of the air distribution duct. Specifically, the blowing direction of the plurality of blowing ports can be tilted downward and toward the center of the ring to achieve better blowing and / or drying effects.

[0032] In some embodiments, the breaking up structure 4 is provided with a rotating shaft 41, breaking up blades 42 and a driving unit 43. The rotating shaft 41 is arranged in the discharge pipe 12, and one end of the rotating shaft 41 extends out of the discharge pipe 12, and is rotatably connected to the tube wall of the discharge pipe 12 through a bearing structure. The breaking up blades 42 are detachably mounted on the rotating shaft 41, and the driving unit 43 is connected to one end of the rotating shaft 41 extending out of the discharge pipe 12.

[0033] Specifically, the breaking blades 42 are provided with an anti-stick coating layer.

[0034] In this embodiment, it is specifically shown that the mineral powder is dispersed by the dispersing blades 42. The structure is simple and the operation is stable. In addition, by providing an anti-stick coating layer on the dispersing blades 42, the dispersing process can avoid the situation where the material adheres to the blades due to static electricity or moisture, thereby achieving a better dispersing effect.

[0035] In some embodiments, a load sensor 6 is provided in the cache bin 1 .

[0036] Specifically, the feed pipeline 11 is provided with an electric butterfly valve 14 .

[0037] In this embodiment, by setting a load sensor 6, the feed amount can be controlled by the bin weight. Specifically, the mineral powder is sent into the buffer bin 1 through the feed pipe 11 through an external pump body. When no material is added, the electric butterfly valve 14 is kept closed to form a seal to prevent water vapor from entering and causing the mineral powder to become wet and agglomerated.

[0038] In some embodiments, a supporting leg 15 is provided at the bottom of the cache bin 1 , and a moving wheel with a brake structure is provided at the bottom of the supporting leg 15 .

[0039] In this embodiment, a support leg 15 is provided and movable wheels are provided on the support leg 15 to facilitate movement, thereby improving portability. In addition, a fixed frame can be provided on the support leg 15 to respectively fix and install the driving part 43 of the breaking structure 4 and the fan 52 of the blowing structure 5 to facilitate overall movement and use.

[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grinding tailings powder mixing device, characterized in that: It includes a buffer bin, a rotor scale and a screw conveyor. The top of the buffer bin is connected to a feed pipe, the bottom of the buffer bin is provided with a discharge pipe, a gate valve and a breaking structure are installed on the discharge pipe, the rotor scale is arranged at the bottom of the discharge pipe, and the discharge pipe extends into the feed inlet of the rotor scale, and the screw conveyor is arranged at the discharge port of the rotor scale for conveying the mineral powder to the grinding tailings trough.

2. The grinding tailings powder incorporation device according to claim 1, characterized in that: The feed pipe is also provided with a blowing structure, and the blowing structure is located between the gate valve and the breaking structure.

3. The grinding tailings powder incorporation device according to claim 2, characterized in that: The blowing structure is provided with an air distribution pipe and a fan. The air distribution pipe is arranged in the discharge pipe, and one end of the air distribution pipe extends out of the discharge pipe and is connected to the fan.

4. The grinding tailings powder incorporation device according to claim 1, characterized in that: The scattering structure is provided with a rotating shaft, scattering blades and a driving unit. The rotating shaft is arranged in the discharge pipe, and one end of the rotating shaft extends out of the discharge pipe and is rotatably connected to the tube wall of the discharge pipe through a bearing structure. The scattering blades are detachably mounted on the rotating shaft, and the driving unit is connected to one end of the rotating shaft extending out of the discharge pipe.

5. The grinding tailings powder adding device according to claim 4 is characterized in that: The scattering blades are provided with an anti-sticking coating layer.

6. The grinding tailings powder adding device according to claim 1, characterized in that: A load sensor is arranged in the buffer bin.

7. The grinding tailings powder adding device according to claim 1 is characterized in that: An electric butterfly valve is arranged on the feed pipeline.

8. The grinding tailings powder incorporation device according to claim 1, characterized in that: A supporting leg is provided at the bottom of the cache bin, and a moving wheel with a brake structure is provided at the bottom of the supporting leg.

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