Feeding device for graphite tailing concrete spraying machine

Abstract

The utility model discloses a feeding device for a graphite tailing concrete spraying machine, belongs to the field of building construction equipment, and aims to solve the problem that the performance of a finally sprayed material body of the spraying machine is difficult to meet the actual working condition requirement due to the fact that the material body proportion of graphite tailings and concrete is difficult to flexibly control in the conventional feeding device of the spraying machine. A multi-layer stacking arrangement mode is adopted, the bottommost layer of the device is a control area and a material receiving area of the graphite tailing concrete spraying machine, the middle layer of the device is a raw material mixing area, the upper layer of the device is a raw material storage and conveying area, the raw material storage area is provided with multiple charging barrels, and each charging barrel corresponds to one concrete raw material. Each charging barrel is correspondingly provided with an independent feeding mechanism, so that the proportion and the injection amount of various raw materials can be accurately controlled, and the proportion of the various raw materials in the graphite tailing concrete can be flexibly adjusted during charging on a construction site; the feeding device is mainly used for feeding the graphite tailing concrete spraying machine on the construction site.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of building construction equipment, more particularly to a feeding device for graphite tailings concrete spraying machine. BACKGROUND

[0002] With the development of graphite industry, graphite tailings treatment has become a major problem, a large number of graphite tailings not only occupy land, pollute the environment, but also cause resource waste, it has important significance to add graphite tailings to concrete and apply it to the spraying support of coal mine roadway and other engineering.

[0003] The existing graphite tailings concrete spraying machine still has some deficiencies in the field use, for example, when feeding the concrete spraying machine at the construction site, it is difficult to flexibly control the addition amount of different raw materials, because the proportion of raw materials is determined in the mixing station or pre-mixing process, the pre-prepared concrete is directly injected into the spraying machine hopper through the feeding device at the construction site, so it is difficult to adjust the proportion of concrete raw materials according to different working conditions during construction. For graphite tailings concrete, there is an optimal range for the use proportion of graphite tailings, for example: when the replacement rate of graphite tailings for sand and gravel is 20% to 30%, the introduction of graphite tailings sand can effectively improve the anti-fracture performance of concrete; when the replacement proportion of graphite tailings is 10%, graphite tailings concrete shows excellent performance in reducing shrinkage, improving impermeability and resisting chloride ion corrosion; when the replacement proportion of graphite tailings is 30%, the compressive strength and tensile strength of graphite tailings concrete are the highest. Because the existing spraying machine feeding device is difficult to adjust the proportion of graphite tailings and concrete, the performance of the final spraying material of the spraying machine is difficult to meet the actual working condition requirements.

[0004] Therefore, in order to flexibly control the addition amount of different raw materials, accurately mix graphite tailings and concrete when feeding, and play the best role of graphite tailings concrete, it is very practical to develop a feeding device for graphite tailings concrete spraying machine. INVENTION CONTENTS

[0005] The utility model discloses a feeding device for graphite tailings concrete spraying machine, which solves the problem that the existing spraying machine feeding device is difficult to flexibly control the proportion of graphite tailings and concrete, and the performance of the final spraying material of the spraying machine is difficult to meet the actual working condition requirements.

[0006] The utility model provides a kind of feeding device for graphite tailings concrete spraying machine, feeding device includes bottom support plate, No.

[0007] Further, the bottom of the first support and the top of the bottom support plate are detachably connected by bolts, the bottom of the second support and the top of the first support are detachably connected by bolts, and the bottom of the third support and the top of the second support are detachably connected by bolts.

[0008] Further, the storage and feeding unit includes a storage cylinder, an electromagnetic flow valve, a connecting pipe and a spiral feeder, the storage cylinder is inserted into the third support and fixedly connected with the third support, the electromagnetic flow valve is connected in series at the discharge end of the storage cylinder to control the discharge state of the storage cylinder, the spiral feeder is arranged on the top of the second support and fixedly connected with the top of the second support, the connecting pipe is arranged between the spiral feeder and the storage cylinder, one end of the connecting pipe is detachably connected with the discharge end of the storage cylinder, the other end of the connecting pipe is detachably connected with the inlet end of the spiral feeder, and the storage cylinder is in communication with the spiral feeder through the connecting pipe.

[0009] Further, the connecting pipe is a flexible corrugated pipe.

[0010] Further, the storage cylinder includes an upper straight cylinder section, a middle transition section and a lower straight cylinder section, the upper straight cylinder section, the middle transition section and the lower straight cylinder section are coaxially and integrally formed from top to bottom, the middle transition section is a tapered cylinder structure, the profile size of the large-diameter end of the middle transition section is the same as the profile size of the bottom end of the upper straight cylinder section, and the profile size of the small-diameter end of the middle transition section is the same as the profile size of the top end of the lower straight cylinder section.

[0011] Further, the screw feeder comprises a feeding barrel, a feeding motor and a pushing shaft, the feeding barrel is fixedly connected with the top of the second support through a plurality of barrel fixing supports, the pushing shaft is inserted in the feeding barrel, and the axis of the pushing shaft is arranged in line with the axis of the feeding barrel, both ends of the pushing shaft extend out of the feeding barrel, and one end of the pushing shaft is connected with the power output shaft of the feeding motor through a shaft coupling, the feeding motor is fixed on the top of the second support through a motor mounting seat, the other end of the pushing shaft is inserted in a bearing seat and rotationally connected with the bearing seat through a bearing, the bearing seat is arranged on the top of the second support and detachably connected with the second support through bolts, the top of the end of the feeding barrel close to the feeding motor is provided with a feeding pipe, and the feeding barrel is in communication with the feeding pipe, the feeding pipe is coaxially arranged corresponding to the lower straight cylinder section in the storage barrel, one end of the connecting pipe is sleeved on the lower straight cylinder section and detachably connected with the storage barrel, the other end of the connecting pipe is sleeved on the top end of the feeding pipe and detachably connected with the feeding pipe, the lower straight cylinder section in the storage barrel is in communication with the feeding pipe through the connecting pipe, and the bottom of the end of the feeding barrel close to the bearing seat is provided with a discharging pipe, and the feeding barrel is in communication with the discharging pipe, the bottom end of the discharging pipe passes through the second support and is arranged corresponding to the feeding end of the mixing unit;

[0012] Further, the middle transition section in the storage barrel is a quadrangular pyramid barrel structure, a trapezoidal notch is formed on each of the two opposite taper surfaces in the middle transition section, a baffle is arranged on the inner side of the trapezoidal notch, the top of the baffle is hingedly connected with the inner wall of the middle transition section, and a bin vibration motor is mounted on the outer side of the baffle;

[0013] Further, the mixing unit comprises a double-shaft horizontal mixer and a mixer fixing support, the double-shaft horizontal mixer is fixed on the top of the first support through the mixer fixing support, the bottom of the bin body in the double-shaft horizontal mixer is provided with a vertical downward extending mixing discharging pipe, the feeding end of the mixing discharging pipe is in communication with the bin body of the double-shaft horizontal mixer, and a discharging pipe is sleeved on the discharging end of the mixing discharging pipe, and the feeding end of the discharging pipe is in communication with the discharging end of the mixing discharging pipe;

[0014] Further, the bottom of the bin body in the double-shaft horizontal mixer is sequentially provided with a plurality of support plates along the length extension direction of the bin body, the top of each support plate is fixedly connected with the bottom of the bin body, and the bottom of each support plate is fixedly connected with the top of the first support;

[0015] Further, the discharging pipe is provided with an electromagnetic blocking valve in series;

[0016] The beneficial effects of the present application relative to the prior art are:

[0017] The application provides a feeding device for a graphite tailing concrete spraying machine, compared with the feeding device of a traditional graphite tailing concrete spraying machine, the application adopts a multi-layer stacked arrangement mode, wherein the bottom layer of the device is a control area and a material receiving area of the graphite tailing concrete spraying machine, the middle layer is a raw material mixing area, and the upper layer is a raw material storage and conveying area, wherein the raw material storage area adopts a multi-cylinder arrangement, each cylinder corresponds to one concrete raw material, and each cylinder is provided with an independent feeding mechanism, so that the proportioning and injection amount of various raw materials can be accurately controlled, thereby realizing flexible adjustment of the proportioning of various raw materials in the graphite tailing concrete during feeding at the construction site, so as to ensure that the performance of the sprayed material body of the spraying machine can meet the actual needs of different working conditions, and the performance of the sprayed material body is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the feeding device described in the application;

[0019] Figure 2 It is a side view schematic diagram of the feeding device described in the application;

[0020] Figure 3 It is a structural schematic diagram of the storage and feeding unit in the feeding device described in the application;

[0021] Figure 4 It is a structural schematic diagram of the spiral feeder in the feeding device described in the application;

[0022] Figure 5 It is a structural schematic diagram of the mixing unit in the feeding device described in the application;

[0023] Figure 6 It is a top view schematic diagram of the storage cylinder in the feeding device described in the application;

[0024] In the figure, 1 is a bottom support plate, 11 is a gentle slope, 2 is a first support, 3 is a second support, 4 is a third support, 5 is a storage and feeding unit, 51 is a storage cylinder, 52 is an electromagnetic flow valve, 53 is a connecting pipe, 54 is a spiral feeder, 55 is a baffle, 56 is a vibration motor, 541 is a feeding cylinder, 542 is a feeding motor, 543 is a pushing shaft, 544 is a bearing seat, 545 is a feeding pipe, 546 is a discharging pipe, 547 is a cylinder fixing frame, 6 is a mixing unit, 61 is a double-shaft horizontal mixer, 62 is a mixer fixing frame, 63 is a mixing and discharging pipe, 64 is a support plate, 7 is a control box, and 8 is a discharging pipe. DETAILED DESCRIPTION

[0025] Specific implementation one: combined Figures 1 to 6The embodiment is illustrated, and the embodiment provides a feeding device for a graphite tailings concrete spraying machine. The feeding device comprises a bottom support plate 1, a first support 2, a second support 3, a third support 4, a mixing unit 6, a control box 7, a discharging pipe 8, and N storage and feeding units 5, where N is a positive integer. The bottom support plate 1 is fixed on the ground in a feeding area. The first support 2, the second support 3, and the third support 4 are sequentially stacked on the top of the bottom support plate 1 from bottom to top. The control box 7 is arranged between the first support 2 and the bottom support plate 1 and is fixedly connected to the top of the bottom support plate 1. The mixing unit 6 is arranged between the first support 2 and the second support 3 and is fixedly connected to the top of the first support 2. The discharging pipe 8 is arranged on the discharging end of the mixing unit 6, and the feeding end of the discharging pipe 8 is in communication with the discharging end of the mixing unit 6. The feeding end of the discharging pipe 8 penetrates through the top of the first support 2 and extends between the first support 2 and the bottom support plate 1. The N storage and feeding units 5 are arranged on the top of the second support 3. The bottom of each storage and feeding unit 5 is fixedly connected to the top of the second support 3. The upper part of each storage and feeding unit 5 is inserted into the third support 4 and is fixedly connected to the third support 4. The discharging end of each storage and feeding unit 5 penetrates through the top of the second support 3 and extends between the first support 2 and the second support 3. The discharging end of each storage and feeding unit 5 is correspondingly arranged at the feeding end of the mixing unit 6. The control box 7 is wiredly connected to each storage and feeding unit 5 and the mixing unit 6 to control the working state of each storage and feeding unit 5 and the mixing unit 6.

[0026] The feeding device for the graphite tailings concrete spraying machine provided in the embodiment is a multi-layer structure, each layer has a clear division of labor, and the raw materials of the graphite tailings concrete are proportioned, conveyed and mixed to finally form graphite tailings concrete feeding for injection into the graphite tailings concrete spraying machine for subsequent spraying treatment. The corresponding position of the No. 1 support 2 and the discharge pipe 8 is provided with a receiving area for providing a receiving space for the graphite tailings concrete spraying machine. In order to facilitate the graphite tailings concrete spraying machine to enter the receiving area, a gentle slope 11 is processed at the corresponding position of the bottom support plate 1 and the receiving area. The staff can drive the graphite tailings concrete spraying machine along the gentle slope 11 into the receiving area and transport the bucket of the spraying machine to the corresponding position of the discharge pipe 8 to realize stable feeding. The number of the storage and feeding units 5 is generally designed according to the types of raw materials of the graphite tailings concrete, which is usually four. Because the main raw materials of the graphite tailings concrete are sand, cement, graphite tailings and additives, if other raw materials need to be added in actual production, the number of the storage and feeding units 5 can be appropriately increased when arranging the feeding device to meet the needs of construction and production. The main body of the control box 7 is a programmable logic controller (PLC) core control system, which mainly controls the working state of each storage and feeding unit 5 and the mixing unit 6. The specific control mode is described in combination with the subsequent specific embodiments.

[0027] Specific implementation method two: in combination with Figures 1 to 6 In this embodiment, the difference between this embodiment and the specific implementation method one is that the bottom of the No. 1 support 2 and the top of the bottom support plate 1 are connected by bolt disassembly, the bottom of the No. 2 support 3 and the top of the No. 1 support 2 are connected by bolt disassembly, and the bottom of the No. 3 support 4 and the top of the No. 2 support 3 are connected by bolt disassembly. The other components and connection modes are the same as those of the specific implementation method one.

[0028] In this way, the on-site assembly and disassembly of the multi-layer frame body are facilitated. Compared with welding, bolt connection can meet the support strength of the frame body during work, and the single-layer frame body can be replaced when it is damaged.

[0029] Specific implementation method three: in combination with Figures 1 to 6The embodiment is described, and the difference between the embodiment and the second specific embodiment is that the storage and feeding unit 5 comprises a storage cylinder 51, an electromagnetic flow valve 52, a connecting pipe 53 and a screw feeder 54. The storage cylinder 51 is inserted into the third support 4 and fixedly connected with the third support 4. The electromagnetic flow valve 52 is connected in series at the discharging end of the storage cylinder 51 to control the discharging state of the storage cylinder 51. The screw feeder 54 is arranged at the top of the second support 3 and fixedly connected with the top of the second support 3. The connecting pipe 53 is arranged between the screw feeder 54 and the storage cylinder 51. One end of the connecting pipe 53 is detachably connected with the discharging end of the storage cylinder 51, and the other end of the connecting pipe 53 is detachably connected with the feeding end of the screw feeder 54. The storage cylinder 51 is in communication with the screw feeder 54 through the connecting pipe 53. The other components and connection modes are the same as those in the second specific embodiment.

[0030] In the embodiment, the storage cylinder 51 is used to store various types of raw materials of the graphite tailings concrete, and the electromagnetic flow valve 52 is used to control the discharging state of the storage cylinder 51. Meanwhile, the electromagnetic flow valve 52 is wirelessly connected with the control box 7. In order to ensure the accurate proportioning of various types of raw materials, a flow sensor is arranged at the discharging end of the storage cylinder 51. The specific addition amount of the raw material is fed back through the flow sensor. The signal output end of the flow sensor is wirelessly connected with the signal input end of the control box 7. When various types of raw materials are added, the addition amount of each type of raw material is set in the control box 7 in advance. When the flow sensor detects that the flow reaches the standard, the control box 7 controls the electromagnetic flow valve 52 to change from the open state to the closed state, thereby preventing the addition of the raw material. Thus, strict quantitative control is achieved. The screw feeder 54 is mainly used to output the raw material flowing out of the storage cylinder 51, so as to ensure the transportation stability and smoothness of the raw material. The power end of the screw feeder 54 is also wirelessly connected with the control box 7. The working state of the screw feeder 54 can be directly controlled through the control box 7.

[0031] Specific embodiment four: combination Figures 1 to 6 The embodiment is described, and the difference between the embodiment and the third specific embodiment is that the connecting pipe 53 is a flexible bellows. The other components and connection modes are the same as those in the third specific embodiment.

[0032] In the embodiment, the purpose of using the flexible bellows for the connecting pipe 53 is to facilitate the disassembly of the connecting pipe. Considering that the storage cylinder 51 may be blocked during discharging, the connecting pipe 53 can be disassembled to blow air to the discharging end of the storage cylinder 51 to unblock it. In addition, considering that the screw feeder 54 may vibrate slightly during operation, the flexible bellows can better adapt to the amplitude of vibration, effectively avoiding the vibration of the connecting pipe 53 from the screw feeder 54, and ensuring the stability and safety of the material transportation.

[0033] Specific implementation five: combination Figures 1 to 6 The difference between this embodiment and the fourth embodiment is that the storage cylinder 51 comprises an upper straight cylinder section, a middle transition section and a lower straight cylinder section, which are coaxially and integrally formed from top to bottom, the middle transition section is a tapered cylinder structure, the profile size of the large-diameter end of the middle transition section is the same as that of the bottom end of the upper straight cylinder section, and the profile size of the small-diameter end of the middle transition section is the same as that of the top end of the lower straight cylinder section. The other components and connection modes are the same as those of the fourth embodiment.

[0034] In this embodiment, the straight cylinder section can be a cylindrical section or a prismatic cylinder section, and the tapered cylinder of the middle transition section can be a conical cylinder or a pyramidal cylinder, which can be selected and arranged by construction personnel according to the actual needs of the site. Since the proportions of each raw material in the graphite tailings concrete are different, the volume of the storage cylinder 51 corresponding to each raw material will also be different. Taking the raw material proportioning of general graphite tailings concrete as an example, the addition amount of sand and stone in general graphite tailings concrete is relatively large, so the volume of the storage cylinder 51 for storing sand and stone is the largest, the addition amount of additives is relatively small, and the volume of the storage cylinder 51 for storing additives is the smallest. This setting is conducive to saving the layout space of the storage cylinder 51, and can also avoid damage and failure of some raw materials due to excessive storage for a long time.

[0035] Specific implementation six: combination Figures 1 to 6The difference between this embodiment and embodiment five is that the screw feeder 54 comprises a feeding barrel 541, a feeding motor 542 and a pushing shaft 543. The feeding barrel 541 is fixedly connected to the top of the second support 3 through a plurality of barrel fixing frames 547. The pushing shaft 543 is inserted into the feeding barrel 541, and the axis of the pushing shaft 543 is arranged in line with the axis of the feeding barrel 541. Both ends of the pushing shaft 543 extend out of the feeding barrel 541, and one end of the pushing shaft 543 is connected to the power output shaft of the feeding motor 542 through a shaft coupling. The feeding motor 542 is fixed to the top of the second support 3 through a motor mounting seat. The other end of the pushing shaft 543 is inserted into a bearing seat 544 and rotationally connected to the bearing seat 544 through a bearing. The bearing seat 544 is arranged on the top of the second support 3 and detachably connected to the second support 3 through bolts. The top of the end of the feeding barrel 541 close to the feeding motor 542 is provided with a feeding pipe 545, and the feeding barrel 541 is arranged in communication with the feeding pipe 545. The feeding pipe 545 is coaxially arranged corresponding to the lower straight cylinder section in the storage barrel 51. One end of the connecting pipe 53 is sleeved on the lower straight cylinder section and detachably connected to the storage barrel 51. The other end of the connecting pipe 53 is sleeved on the top end of the feeding pipe 545 and detachably connected to the feeding pipe 545. The lower straight cylinder section in the storage barrel 51 is arranged in communication with the feeding pipe 545 through the connecting pipe 53. The bottom of the end of the feeding barrel 541 close to the bearing seat 544 is provided with a discharging pipe 546, and the feeding barrel 541 is arranged in communication with the discharging pipe 546. The bottom end of the discharging pipe 546 penetrates through the second support 3 and is arranged corresponding to the feeding end of the mixing unit 6. The other components and connection modes are the same as those of embodiment five.

[0036] In this embodiment, the feeding motor 542 is wirelessly connected to the control box 7, and the control box 7 can control the working state of the feeding motor 542. The outer cylindrical surface of the pushing shaft 543 is provided with a helical blade. When the feeding motor 542 drives the pushing shaft 543 to rotate, the helical blade pushes the raw materials to move from the feeding pipe 545 to the discharging pipe 546. The barrel fixing frame 547 is used to support the feeding barrel 541 to ensure the stability of the feeding barrel 541 during work. The upper part of the barrel fixing frame 547 is a fixed ring structure for sleeving on the feeding barrel 541. The lower part of the barrel fixing frame 547 is a connecting structure for being fastened and connected to the second support 3 through bolts.

[0037] Embodiment seven: Figures 1 to 6 This embodiment is different from embodiment six in that the middle transition section in the storage barrel 51 is a four-prism cone structure. Two oppositely arranged tapered surfaces in the middle transition section are respectively provided with a trapezoidal notch. The inner side of the trapezoidal notch is provided with a baffle 55. The top of the baffle 55 is hingedly connected to the inner wall of the middle transition section. A hopper vibration motor 56 is mounted on the outer side of the baffle 55. The components and connection modes are the same as those of embodiment six.

[0038] In this embodiment, considering that part of the raw materials in the storage cylinder 51 are prone to be blocked at the outlet end due to the gradually decreasing diameter of the middle tapering section during the discharging process, the middle tapering section is provided with a blocking prevention treatment. When blocking occurs, the baffle 55 can be slightly vibrated by the bin vibration motor 56 to loosen the blocked raw materials and dredge the blocked raw materials.

[0039] Specific implementation method eight: Figures 1 to 6 In this embodiment, the difference between this embodiment and specific implementation method seven is that the mixing unit 6 comprises a double-shaft horizontal mixer 61 and a mixer fixing frame 62. The double-shaft horizontal mixer 61 is fixed on the top of the first support 2 through the mixer fixing frame 62. The bottom of the bin body in the double-shaft horizontal mixer 61 is provided with a vertically downward extending mixing and discharging pipe 63. The inlet end of the mixing and discharging pipe 63 is in communication with the bin body of the double-shaft horizontal mixer 61. The discharging pipe 8 is sleeved on the outlet end of the mixing and discharging pipe 63. The inlet end of the discharging pipe 8 is in communication with the outlet end of the mixing and discharging pipe 63. The other components and connection modes are the same as those of specific implementation method seven.

[0040] In this embodiment, the power end of the double-shaft horizontal mixer 61 is also wirelessly connected with the control box 7. The working state of the double-shaft horizontal mixer 61 can be controlled through the control box 7. The double-shaft horizontal mixer 61 comprises two stirring shafts. Each stirring shaft is provided with helically arranged stirring paddles along the axis extending direction of the stirring shaft. The two stirring shafts rotate in opposite directions in the working state. The raw materials falling into the stirring area are stirred by the stirring paddles to realize the sufficient mixing of the raw materials. The mixed raw materials are discharged from the discharging pipe 8 under the pushing of the stirring paddles.

[0041] Specific implementation method nine: Figures 1 to 6 In this embodiment, the difference between this embodiment and specific implementation method eight is that the bottom of the bin body in the double-shaft horizontal mixer 61 is sequentially provided with a plurality of support plates 64 along the length extending direction of the bin body. The top of each support plate 64 is fixedly connected with the bottom of the bin body. The bottom of each support plate 64 is fixedly connected with the top of the first support 2. The other components and connection modes are the same as those of specific implementation method eight.

[0042] In this way, the support plates 64 are arranged to improve the support strength of the double-shaft horizontal mixer 61 and ensure the arrangement stability of the double-shaft horizontal mixer 61.

[0043] Specific implementation method ten: Figures 1 to 6 In this embodiment, the difference between this embodiment and specific implementation method nine is that the discharging pipe 8 is provided with a series connected electromagnetic blocking valve. The other components and connection modes are the same as those of specific implementation method nine.

[0044] In the embodiment, the electromagnetic block valve is wirelessly connected with the control box 7, and the working state of the electromagnetic block valve can be controlled through the control box 7; when the discharging pipe 8 needs to perform the discharging work, the electromagnetic block valve is in an open state; when an emergency situation occurs, for example, part of the raw material is blocked to cause an error in the original mixing ratio, the electromagnetic block valve can be closed in an emergency to avoid a large amount of the concrete with the wrong mixing ratio from entering the graphite tailing concrete spraying machine.

[0045] The above has been disclosed with the preferred embodiments of the present application, but the present application is not limited thereto, and any skilled person in the art can make some changes or modifications to the above disclosed structure and technical content to obtain equivalent embodiments without departing from the technical scheme of the present application; however, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application shall still fall within the technical scheme of the present application.

[0046] Working principle

[0047] The application provides a feeding device for a graphite tailing concrete spraying machine. In use, first, various components are installed according to the connection relationship described in the first embodiment to the tenth embodiment, and corresponding raw materials are added to the storage cylinder 51. When the graphite tailing concrete spraying machine needs to be fed, the staff first transports the graphite tailing concrete spraying machine to the receiving area of the feeding device, and makes the material barrel of the graphite tailing concrete spraying machine correspond to the discharge pipe 8. The staff adjusts the injection amount of each raw material through the control box 7. The control box 7 has a pre-stored program function, and the technical personnel can pre-store the mixing ratio of each raw material in the graphite tailing concrete in the program mode in the control box 7, so as to facilitate the on-site construction personnel to directly access and use. When the staff selects the ratio, each storage and feeding unit 5 starts to work. The raw materials flow out of the storage cylinder 51, enter the spiral feeder 54 along the connecting pipe 53, and are transported to the mixing unit 6 through the spiral feeder 54. The discharge end of the storage cylinder 51 is provided with a flow sensor and an electromagnetic flow valve 52. When the flow sensor detects that the flow of the raw materials meets the mixing requirement, the electromagnetic flow valve 52 changes from the open state to the closed state to prevent the corresponding storage cylinder 51 from discharging. When each raw material enters the mixing unit 6, the mixing unit 6 stirs the raw materials to mix them together to form the graphite tailing concrete. The mixed graphite tailing concrete flows out of the discharge pipe 8 and falls into the graphite tailing concrete spraying machine to be fed. When the feeding is completed, the electromagnetic blocking valve prevents the discharge pipe 8 from discharging. At this time, the graphite tailing concrete spraying machine full of materials is driven away from the receiving area by the staff, and after the next graphite tailing concrete spraying machine enters the receiving area, the electromagnetic blocking valve is opened to make the discharge pipe 8 continue to discharge. The above process is repeated to complete the feeding work of all the graphite tailing concrete spraying machines in the construction site.

Claims

1. A feeding device for a graphite tailings concrete sprayer, characterized by: The feeding device comprises a bottom support plate (1), a first support (2), a second support (3), a third support (4), a mixing unit (6), a control box (7), a discharging pipe (8) and N storage and feeding units (5), N is a positive integer, the bottom support plate (1) is fixed on the ground in the feeding area, the first support (2), the second support (3) and the third support (4) are sequentially stacked on the top of the bottom support plate (1) from bottom to top, the control box (7) is arranged between the first support (2) and the bottom support plate (1), and the control box (7) is fixedly connected with the top of the bottom support plate (1), the mixing unit (6) is arranged between the first support (2) and the second support (3), and the mixing unit (6) is fixedly connected with the top of the first support (2), the discharging pipe (8) is arranged on the discharging end of the mixing unit (6), and the feeding end of the discharging pipe (8) is in communication with the discharging end of the mixing unit (6), the discharging end of the discharging pipe (8) penetrates through the top of the first support (2) and extends between the first support (2) and the bottom support plate (1), and the N storage and feeding units (5) are all arranged on the top of the second support (3), and the bottom of each storage and feeding unit (5) is fixedly connected with the top of the second support (3), the upper part of each storage and feeding unit (5) is inserted into the third support (4) and is fixedly connected with the third support (4), and the discharging end of each storage and feeding unit (5) penetrates through the top of the second support (3) and extends between the first support (2) and the second support (3), and the discharging end of each storage and feeding unit (5) is correspondingly arranged with the feeding end of the mixing unit (6), and the control box (7) is wiredly connected with each storage and feeding unit (5) and the mixing unit (6) to control the working state of each storage and feeding unit (5) and the mixing unit (6).

2. A feeding device for a graphite tailings concrete spraying machine according to claim 1, characterized in that: The bottom of the first support (2) is detachably connected with the top of the bottom support plate (1) through bolts, the bottom of the second support (3) is detachably connected with the top of the first support (2) through bolts, and the bottom of the third support (4) is detachably connected with the top of the second support (3) through bolts.

3. A feeding device for a graphite tailings concrete spraying machine according to claim 2, characterized in that: The storage and feeding unit (5) comprises a storage cylinder (51), an electromagnetic flow valve (52), a connecting pipe (53) and a spiral feeder (54), the storage cylinder (51) is inserted into the third support (4) and is fixedly connected with the third support (4), the electromagnetic flow valve (52) is connected in series at the discharging end of the storage cylinder (51) to control the discharging state of the storage cylinder (51), the spiral feeder (54) is arranged on the top of the second support (3) and is fixedly connected with the top of the second support (3), the connecting pipe (53) is arranged between the spiral feeder (54) and the storage cylinder (51), one end of the connecting pipe (53) is detachably connected with the discharging end of the storage cylinder (51), the other end of the connecting pipe (53) is detachably connected with the feeding end of the spiral feeder (54), and the storage cylinder (51) is in communication with the spiral feeder (54) through the connecting pipe (53).

4. A feeding device for a graphite tailings concrete spraying machine according to claim 3, characterized in that: The connecting pipe (53) is a flexible bellows.

5. A feeding device for a graphite tailings concrete spraying machine according to claim 4, characterized in that: The storage cylinder (51) comprises an upper straight cylinder section, a middle transition section and a lower straight cylinder section, which are coaxially and integrally formed from top to bottom, the middle transition section is a tapered cylinder structure, the profile size of the large-diameter end of the middle transition section is the same as that of the bottom end of the upper straight cylinder section, and the profile size of the small-diameter end of the middle transition section is the same as that of the top end of the lower straight cylinder section.

6. A feeding device for a graphite tailings concrete spraying machine according to claim 5, characterized in that: The screw feeder (54) comprises a feeding cylinder (541), a feeding motor (542) and a pushing shaft (543), the feeding cylinder (541) is fixedly connected to the top of the second support (3) through a plurality of cylinder fixing supports (547), the pushing shaft (543) is inserted into the feeding cylinder (541), and the axis of the pushing shaft (543) is arranged in line with the axis of the feeding cylinder (541), both ends of the pushing shaft (543) extend out of the feeding cylinder (541), and one end of the pushing shaft (543) is connected to the power output shaft of the feeding motor (542) through a shaft coupling, the feeding motor (542) is fixed to the top of the second support (3) through a motor mounting seat, the other end of the pushing shaft (543) is inserted into a bearing seat (544) and is rotationally connected to the bearing seat (544) through a bearing, the bearing seat (544) is arranged on the top of the second support (3) and is detachably connected to the second support (3) through bolts, the top of one end of the feeding cylinder (541) near the feeding motor (542) is provided with a feeding pipe (545), and the feeding cylinder (541) is in communication with the feeding pipe (545), the feeding pipe (545) is coaxially arranged corresponding to the lower straight cylinder section in the storage cylinder (51), one end of the connecting pipe (53) is sleeved on the lower straight cylinder section and is detachably connected to the storage cylinder (51), the other end of the connecting pipe (53) is sleeved on the top end of the feeding pipe (545) and is detachably connected to the feeding pipe (545), the lower straight cylinder section in the storage cylinder (51) is in communication with the feeding pipe (545) through the connecting pipe (53), and the bottom of the other end of the feeding cylinder (541) near the bearing seat (544) is provided with a discharging pipe (546), and the feeding cylinder (541) is in communication with the discharging pipe (546), the bottom end of the discharging pipe (546) penetrates through the second support (3) and is arranged corresponding to the feeding end of the mixing unit (6).

7. A feeding device for a graphite tailings concrete spraying machine according to claim 6, characterized in that: The middle transition section in the storage cylinder (51) is a quadrangular pyramid cylinder structure, one trapezoidal notch is formed on each of the two opposite taper surfaces in the middle transition section, a baffle (55) is arranged on the inner side of the trapezoidal notch, the top of the baffle (55) is hingedly connected to the inner wall of the middle transition section, and a bunker vibration motor (56) is mounted on the outer side of the baffle (55).

8. A feeding device for a graphite tailings concrete spraying machine according to claim 1, characterized in that: The mixing unit (6) comprises a double-shaft horizontal stirrer (61) and a stirrer fixing frame (62), the double-shaft horizontal stirrer (61) is fixed at the top of the No. 1 support (2) through the stirrer fixing frame (62), the bottom of the bin body in the double-shaft horizontal stirrer (61) is provided with a vertically downward extending mixing discharge pipe (63), and the inlet end of the mixing discharge pipe (63) is in communication with the bin body of the double-shaft horizontal stirrer (61), the discharge pipe (8) is sleeved on the discharge end of the mixing discharge pipe (63), and the inlet end of the discharge pipe (8) is in communication with the discharge end of the mixing discharge pipe (63).

9. A feeding device for a graphite tailings concrete spraying machine according to claim 8, characterized in that: The bottom of the bin body in the double-shaft horizontal stirrer (61) is sequentially provided with a plurality of support plates (64) along the length extension direction of the bin body, the top of each support plate (64) is fixedly connected with the bottom of the bin body, and the bottom of each support plate (64) is fixedly connected with the top of the No. 1 support (2).

10. A feeding device for a graphite tailings concrete spraying machine according to claim 8, characterized in that: The discharge pipe (8) is connected in series with an electromagnetic blocking valve.

Images