Coal gangue vertical mill blanking structure with pre-pressing device

Abstract

The utility model relates to the technical field of vertical mill grinding process control, in particular to a coal gangue vertical mill blanking structure with a pre-pressing device. According to the technical scheme, the blanking device comprises a blanking pipe, an oil pipe assembly is installed on the upper side of the periphery of the blanking pipe, two installation assemblies are symmetrically installed on the lower side of the periphery of the blanking pipe, prepressing assemblies are installed on the installation assemblies and communicate with the oil pipe assembly, and each prepressing assembly comprises a hydraulic cylinder; a first connecting pipe and a second connecting pipe are fixedly inserted into two oil ports of the hydraulic cylinder correspondingly, a telescopic rod of the hydraulic cylinder is fixedly connected with a connecting piece, and a compacting plate is fixedly installed at the bottom of the connecting piece. According to the utility model, not only can the coal gangue with high moisture be pre-compacted in advance and the stability of a material layer be improved, but also the compactness of the material layer can be improved through pre-compaction, so that the energy is more concentrated in the subsequent grinding process of the vertical mill and the grinding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill grinding process control, in particular to a gangue vertical mill blanking structure with a pre-pressing device. Background Art

[0002] Vertical mill grinding is based on the principle of selective crushing of material layers. In actual applications, the material to be ground enters the vertical mill through the feeding equipment, performs centrifugal motion under the rotation of the grinding disc, and after entering the grinding track, it is affected by the multi-dimensional force field from the grinding roller, material, material space and grinding disc. Under the action of pressure, shear force and centrifugal force, homogeneous or heterogeneous separation occurs, and then continues to move to the edge of the grinding disc.

[0003] However, for the coal gangue vertical mill, since the coal gangue raw materials to be ground have a high moisture content, it will cause the coal gangue materials to have a high adhesion when reaching the grinding disc from the drop port, making it difficult for the coal gangue materials to form a uniform material layer thickness, which in turn easily leads to problems such as large vibration or adjustment of the mill, and in severe cases, it may cause the grinding roller to break. At present, most of the material layer pre-compacting devices of vertical mills are installed above the material layer near the grinding area, and are mainly fixed structures, which cannot be adjusted with changes in operating parameters. Therefore, effective methods must be taken to improve the uniformity of the coal gangue vertical grinding layer in order to ensure the stability of the mill operation. Utility Model Content

[0004] The utility model aims to solve the problems existing in the background technology and proposes a gangue vertical grinding material-cutting structure with a pre-pressing device.

[0005] To achieve this purpose, the utility model adopts the following technical scheme: a coal gangue vertical grinding blanking structure with a preloading device, including a blanking pipe, an oil pipe assembly is installed on the outer upper side of the blanking pipe, two mounting assemblies are symmetrically installed on the outer lower side of the blanking pipe, preloading assemblies are installed on the mounting assemblies, and the preloading assemblies are connected to the oil pipe assembly, the preloading assembly includes a hydraulic cylinder, two oil ports of the hydraulic cylinder are respectively fixedly connected with connecting pipe one and connecting pipe two, the telescopic rod of the hydraulic cylinder is fixedly connected with a connecting piece, and a compacting plate is fixedly installed at the bottom of the connecting piece.

[0006] Preferably, the oil pipe assembly includes an oil pipe rack fixedly mounted on the outer side of the drop pipe, an inner ring pipe and an outer ring pipe are fixedly installed on the top of the oil pipe rack, oil inlet pipe 1 and oil inlet pipe 2 are fixedly plugged into the inner ring pipe, and oil outlet pipe 1 and oil outlet pipe 2 are fixedly plugged into the outer ring pipe.

[0007] Preferably, the oil inlet pipe 1 and the oil outlet pipe 1 are both connected to an external hydraulic system, and the oil inlet pipe 2 and the oil outlet pipe 2 are connected to the connecting pipe 1 and the connecting pipe 2 respectively.

[0008] Preferably, the mounting assembly includes a mounting base fixedly mounted on the lower side of the outer periphery of the drop tube, a hydraulic base is fixedly mounted on the side of the mounting base away from the drop tube by bolts, and a pressure cover is mounted on the side of the hydraulic base away from the mounting base by screws.

[0009] Preferably, the hydraulic base and the pressure cover are provided with semicircular grooves on the sides facing each other, and the hydraulic cylinder is fixedly installed in the two semicircular grooves. The telescopic rod of the hydraulic cylinder passes through the bottom sides of the two semicircular grooves and extends to directly below the hydraulic base and the pressure cover. Two through holes are provided on the side of the pressure cover away from the hydraulic base, and connecting pipe one and connecting pipe two respectively pass through one through hole.

[0010] Preferably, semicircular positioning holes are provided on both sides of the middle portion of the inner wall of the semicircular groove.

[0011] Preferably, the top sides of the semicircular grooves are each provided with a semicircular air hole, and the positions of the two semicircular air holes correspond to each other.

[0012] The beneficial effects of the utility model are as follows: by regulating the external hydraulic system, the hydraulic oil is allowed to enter the inner ring tube through the oil inlet pipe 1, and then enter the connecting pipe 1 through the oil inlet pipe 2, so that the hydraulic oil enters the hydraulic cylinder. At the same time, the hydraulic oil in the hydraulic cylinder can be discharged to the oil outlet pipe 2 through the external hydraulic system through the connecting pipe 2, and then enter the inner ring tube and the oil outlet pipe 1 in turn, and return to the external hydraulic system through the oil outlet pipe 1, so as to regulate the length of the telescopic rod of the hydraulic cylinder. During the operation of the vertical mill, the material reaches the grinding disc from the drop pipe, and then performs centrifugal operation with the rotation of the grinding disc to form a material layer, so that the compacting plate fixedly connected with the telescopic rod of the hydraulic cylinder and the material layer maintains a suitable distance, so that the material layer moves more evenly, so that the device can pre-compact materials with high moisture content such as coal gangue in advance to improve the stability of the material layer. At the same time, the density of the material layer can be improved through pre-compaction, so that the energy in the subsequent vertical mill grinding process is more concentrated, thereby improving the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of the overall structure of an embodiment of a coal gangue vertical grinding material blanking structure with a pre-pressing device of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the installation assembly in an embodiment of a coal gangue vertical grinding material blanking structure with a pre-pressing device of the utility model;

[0015] Figure 3 The utility model is a schematic diagram of the overall structure of a pre-pressing assembly in an embodiment of a coal gangue vertical grinding material blanking structure with a pre-pressing device.

[0016] : 1. drop pipe; 2. oil pipe assembly; 21. oil pipe rack; 22. inner ring pipe; 23. outer ring pipe; 24. oil inlet pipe one; 25. oil outlet pipe one; 26. oil inlet pipe two; 27. oil outlet pipe two; 3. mounting assembly; 31. mounting base; 32. bolt; 33. hydraulic base; 34. pressure cover; 35. semicircular groove; 36. semicircular air vent; 37. semicircular positioning hole; 38. through hole; 4. pre-pressing assembly; 41. hydraulic cylinder; 42. connecting piece; 43. compacting plate; 44. connecting pipe one; 45. connecting pipe two. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0018] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0020] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0021] Embodiment 1

[0022] like Figure 1-3 As shown, the utility model proposes a coal gangue vertical grinding material blanking structure with a pre-pressing device, including a blanking pipe 1, an oil pipe assembly 2 is installed on the outer upper side of the blanking pipe 1, two mounting assemblies 3 are symmetrically installed on the outer lower side of the blanking pipe 1, and a pre-pressing assembly 4 is installed on each mounting assembly 3, and the pre-pressing assembly 4 is connected to the oil pipe assembly 2, and the pre-pressing assembly 4 includes a hydraulic cylinder 41, and two oil ports of the hydraulic cylinder 41 are respectively fixedly plugged with a connecting pipe 1 44 and a connecting pipe 2 45, and the telescopic rod of the hydraulic cylinder 41 is fixedly connected with a connecting piece 42, and the connecting piece A compacting plate 43 is fixedly installed at the bottom of 42; the oil pipe assembly 2 includes an oil pipe rack 21 fixedly sleeved on the outer upper side of the blanking pipe 1, an inner ring pipe 22 and an outer ring pipe 23 are fixedly installed on the top of the oil pipe rack 21, an oil inlet pipe 1 24 and an oil inlet pipe 2 26 are fixedly plugged into the inner ring pipe 22, and an oil outlet pipe 1 25 and an oil outlet pipe 2 27 are fixedly plugged into the outer ring pipe 23; the oil inlet pipe 1 24 and the oil outlet pipe 1 25 are both connected to an external hydraulic system, and the oil inlet pipe 2 26 and the oil outlet pipe 2 27 are respectively connected to the connecting pipe 1 44 and the connecting pipe 2 45.

[0023] In this embodiment: the oil pipe rack 21 is provided to facilitate the installation of the inner ring pipe 22 and the outer ring pipe 23, the oil inlet pipe 24 and the oil outlet pipe 25 are provided to connect with the external hydraulic system, the oil inlet pipe 26 and the oil outlet pipe 27 are connected to the pipes 44 and 47 respectively, so that by regulating the external hydraulic system, the hydraulic oil can form a circulation flow among the oil inlet pipe 24, the inner ring pipe 22, the oil inlet pipe 26, the oil outlet pipe 27, the inner ring pipe 22 and the oil outlet pipe 25, so as to regulate the pressure in the hydraulic cylinder 41, and then control the length of the telescopic rod, and compact the material by the compacting plate 43 fixedly installed by the telescopic rod, and the structural parameters of the compacting plate 43 can be adjusted according to actual needs, including the curvature, width and length of the compacting plate.

[0024] Embodiment 2

[0025] like Figure 1-3As shown, the utility model proposes a coal gangue vertical grinding blanking structure with a pre-pressing device. Compared with the first embodiment, the present embodiment further includes a mounting assembly 3, the mounting assembly 3 includes a mounting base 31 fixedly mounted on the lower side of the outer periphery of the blanking pipe 1, a hydraulic base 33 is fixedly mounted on the side of the mounting base 31 away from the blanking pipe 1 by bolts 32, and a pressure cover 34 is mounted on the side of the hydraulic base 33 away from the mounting base 31 by screws; a semicircular groove 35 is provided on the side facing each other of the hydraulic base 33 and the pressure cover 34, and the hydraulic base 33 and the pressure cover 34 are provided with a semicircular groove 35 ... The pressure cylinder 41 is fixedly installed in the two semicircular grooves 35. The telescopic rod of the hydraulic cylinder 41 passes through the bottom sides of the two semicircular grooves 35 and extends to the bottom of the hydraulic base 33 and the pressure cover 34. The pressure cover 34 is provided with two through holes 38 on the side away from the hydraulic base 33, and the connecting pipe 1 44 and the connecting pipe 2 45 pass through a through hole 38 respectively; semicircular positioning holes 37 are provided on both sides of the middle part of the inner wall of the semicircular groove 35; semicircular air holes 36 are provided on the top sides of the semicircular grooves 35, and the positions of the two semicircular air holes 36 correspond to each other.

[0026] In this embodiment: the mounting base 31 and the bolts 32 are provided to facilitate fixing the hydraulic base 33 on the periphery of the blanking tube 1; the two semicircular grooves 35 provided on the hydraulic base 33 and the pressure cover 34 are provided to allow the hydraulic cylinder 41 to be installed therein; the two through holes 38 are provided to facilitate connecting the connecting pipe 1 44 and the connecting pipe 2 45 to the external hydraulic system; the semicircular positioning holes 37 provided on both sides of the middle part of the inner wall of the semicircular groove 35 are provided to facilitate positioning of the hydraulic cylinder 41 during installation; the semicircular air vent 36 is provided on the top side of the semicircular groove 35 because the hydraulic cylinder 41 will undergo a certain elastic deformation during the operation of the preloading device, and the space where the hydraulic cylinder 41 is located will be compressed or expanded. The gas can be discharged through the semicircular air vent 36 to stabilize the air pressure in the space where the hydraulic cylinder 41 is located.

[0027] Working principle: By regulating the external hydraulic system, the hydraulic oil enters the inner ring tube 22 through the oil inlet pipe 24, and then enters the connecting pipe 44 through the oil inlet pipe 26, so that the hydraulic oil enters the hydraulic cylinder 41. At the same time, the hydraulic oil in the hydraulic cylinder 41 can be discharged to the oil outlet pipe 27 through the external hydraulic system through the connecting pipe 45, and then enters the inner ring tube 22 and the oil outlet pipe 25 in turn, and flows back to the external hydraulic system through the oil outlet pipe 25, so as to regulate the length of the telescopic rod of the hydraulic cylinder 41. During the operation of the vertical mill, the material reaches the grinding disc from the drop pipe 1, and then performs centrifugal operation with the rotation of the grinding disc to form a material layer, so that the compacting plate 43 fixedly connected to the telescopic rod of the hydraulic cylinder 41 and the material layer maintains a suitable distance, so that the material layer moves more evenly.

[0028] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A coal gangue vertical grinding material blanking structure with a pre-pressing device, comprising a blanking pipe (1), characterized in that: An oil pipe assembly (2) is installed on the upper side of the periphery of the drop tube (1), and two mounting assemblies (3) are symmetrically installed on the lower side of the periphery of the drop tube (1). A pre-pressing assembly (4) is installed on each of the mounting assemblies (3), and the pre-pressing assembly (4) is connected to the oil pipe assembly (2). The pre-pressing assembly (4) comprises a hydraulic cylinder (41), and two oil ports of the hydraulic cylinder (41) are respectively fixedly connected with a connecting pipe 1 (44) and a connecting pipe 2 (45). The telescopic rod of the hydraulic cylinder (41) is fixedly connected with a connecting piece (42), and a compacting plate (43) is fixedly installed at the bottom of the connecting piece (42).

2. The coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 1 is characterized in that: The oil pipe assembly (2) comprises an oil pipe rack (21) fixedly sleeved on the upper side of the outer periphery of the drop pipe (1), an inner ring pipe (22) and an outer ring pipe (23) fixedly mounted on the top of the oil pipe rack (21), an oil inlet pipe 1 (24) and an oil inlet pipe 2 (26) fixedly plugged into the inner ring pipe (22), and an oil outlet pipe 1 (25) and an oil outlet pipe 2 (27) fixedly plugged into the outer ring pipe (23).

3. The coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 2 is characterized in that: The oil inlet pipe 1 (24) and the oil outlet pipe 1 (25) are both connected to an external hydraulic system, and the oil inlet pipe 2 (26) and the oil outlet pipe 2 (27) are respectively connected to the connecting pipe 1 (44) and the connecting pipe 2 (45).

4. The coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 1 is characterized in that: The mounting assembly (3) comprises a mounting base (31) fixedly mounted on the lower side of the periphery of the drop tube (1); a hydraulic base (33) is fixedly mounted on the side of the mounting base (31) away from the drop tube (1) via bolts (32); and a pressure cover (34) is mounted on the side of the hydraulic base (33) away from the mounting base (31) via screws.

5. The coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 4 is characterized in that: The hydraulic base (33) and the pressure cover (34) are both provided with semicircular grooves (35) on the sides facing each other, and the hydraulic cylinder (41) is fixedly installed in the two semicircular grooves (35). The telescopic rod of the hydraulic cylinder (41) passes through the bottom sides of the two semicircular grooves (35) and extends to the bottom of the hydraulic base (33) and the pressure cover (34). The pressure cover (34) is provided with two through holes (38) on the side away from the hydraulic base (33), and the connecting pipe 1 (44) and the connecting pipe 2 (45) respectively pass through one through hole (38).

6. The coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 5 is characterized in that: Semicircular positioning holes (37) are provided on both sides of the middle portion of the inner wall of the semicircular groove (35).

7. A coal gangue vertical grinding material removal structure with a pre-pressing device according to claim 6, characterized in that: The top sides of the semicircular grooves (35) are each provided with a semicircular air-permeable hole (36), and the two semicircular air-permeable holes (36) are located in corresponding positions.

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