Aggregate storage bin discharging device

Abstract

The utility model provides an aggregate storage bin discharging device, and relates to the technical field of discharging devices. The discharging device comprises a discharging hopper, the upper end and the lower end of the discharging hopper are open, the upper end opening of the discharging hopper is in sealed connection with a discharging port of the aggregate bin, the lower end opening of the discharging hopper is formed above the measuring hopper, and a hopper door is arranged at the position of the lower end opening of the discharging hopper and has a first state for closing the lower end opening of the discharging hopper and a second state for opening the lower end opening of the discharging hopper. The sealing cover covers the discharge hopper and the hopper door, the upper end of the sealing cover is hermetically connected with the outer wall of the discharge hopper, and the lower end of the sealing cover is hermetically and flexibly connected with the outer wall of the metering hopper; the driving assembly is used for driving the hopper door to be switched between the first state and the second state, the discharging hopper and the hopper door are both covered with the sealing covers, and the sealing covers, the outer wall of the discharging hopper and the outer wall of the metering hopper are connected to jointly form the sealing space, so that the whole discharging process is conducted in the sealing space, and the problem of dust overflowing is avoided; and the pollution to the environment is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of unloading devices, and in particular to an aggregate bin unloading device. Background Art

[0002] During the batching process of the building sand and gravel mixing plant, it is necessary to control the opening and closing of the aggregate bin outlet through the unloading device, so as to control the flow rate or flow of the material discharged into the measuring hopper. The existing unloading device includes a hopper door arranged below the aggregate bin outlet, and the hopper door is rotatably connected to the side wall of the aggregate bin through two side panels. At the same time, the side wall of the aggregate bin is hinged with a driving assembly, and the driving end of the driving assembly is connected to the hopper door to realize the opening and closing of the hopper door. However, when transporting materials with smaller particle sizes, such as fine sand, the materials are easy to overflow during the opening and closing process of the hopper door, causing pollution to the surrounding environment. Utility Model Content

[0003] The purpose of this application is to provide an aggregate bin unloading device to solve the problem of easy overflow of materials in view of the above problems.

[0004] The present application provides an aggregate bin unloading device, which is used to unload materials in the aggregate bin into a measuring hopper, comprising:

[0005] A discharge hopper, the upper and lower ends of the discharge hopper are open, the upper opening of the discharge hopper is sealed and connected to the aggregate bin discharge port, the lower opening of the discharge hopper is arranged above the weighing hopper, a hopper door is arranged at the lower opening of the discharge hopper, and the hopper door has a first state of closing the lower opening of the discharge hopper and a second state of opening the lower opening of the discharge hopper;

[0006] A sealing cover, wherein the sealing cover is arranged outside the discharge hopper and the hopper door, the upper end of the sealing cover is sealed and connected to the outer wall of the discharge hopper, and the lower end of the sealing cover is sealed and softly connected to the outer wall of the metering hopper;

[0007] A driving assembly is installed outside the sealing cover, a driving end of the driving assembly is connected to the bucket door, and the driving assembly is used to drive the bucket door to switch between the first state and the second state.

[0008] According to the technical solution provided in certain embodiments of the present application, the sealing cover includes a hard cover body and a flexible cover body sealably connected to one end of the hard cover body, the free end of the hard cover body is sealably connected to the outer wall of the discharge hopper, and the free end of the flexible cover body is sealably and flexibly connected to the outer wall of the measuring hopper.

[0009] According to the technical solutions provided in certain embodiments of the present application, there are two drive assemblies, and the two drive assemblies are symmetrically arranged on both sides of the hard cover body about the axis of the bucket door.

[0010] According to the technical solution provided in certain embodiments of the present application, the hopper gate includes an arc-shaped bottom plate, which is arranged opposite to the lower opening of the discharge hopper, and the opposite ends of the bottom plate are respectively connected to side plates, and the two side plates are symmetrically arranged about the central axis of the bottom plate, and the direction of the central axis of the bottom plate is perpendicular to the length direction of the bottom plate.

[0011] According to the technical solution provided in certain embodiments of the present application, a gravity balance block is provided on the side of the bottom plate away from the discharge hopper, and the center of gravity of the gravity balance block is located on the central axis of the bottom plate.

[0012] According to the technical solution provided in certain embodiments of the present application, the driving assembly includes a cylinder and a rotating rod, the cylinder is hinged on the hard cover body, the output end of the cylinder is rotatably connected to the rotating rod, and the free end of the rotating rod is rotatably connected to the side panel located on the same side.

[0013] According to the technical solution provided in certain embodiments of the present application, a through hole is opened on the hard cover body, a bearing is installed in the through hole, and the rotating rod and the side plate located on the same side are rotatably connected through the bearing.

[0014] According to the technical solution provided in certain embodiments of the present application, a plurality of transparent observation ports are provided on the hard cover body.

[0015] According to the technical solutions provided in certain embodiments of the present application, a stop valve is provided at the connection between the upper opening of the discharge hopper and the discharge port of the aggregate bin.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows: the aggregate bin unloading device provided by the present application is provided with a unloading hopper with upper and lower openings between the aggregate bin and the measuring hopper, the upper opening of the unloading hopper is sealed and connected to the aggregate bin discharge port, a hopper door is provided at the lower opening, a sealing cover is provided outside the unloading hopper and the hopper door, one end of the sealing cover is sealed and connected to the outer wall of the unloading hopper, and the other end is sealed and softly connected to the outer wall of the measuring hopper, in addition, the hopper door has a first state of closing the lower end opening of the unloading hopper and a second state of disassembling the lower end opening of the unloading hopper, and a driving component for driving the hopper door state switching is provided outside the sealing cover.

[0017] When the material in the aggregate bin needs to be unloaded into the measuring hopper, the material in the aggregate bin will flow into the discharge hopper from the aggregate bin outlet due to gravity. Since a hopper door is provided at the lower opening of the discharge hopper, the driving component drives the hopper door to close the lower opening of the discharge hopper or open the lower opening of the discharge hopper, thereby controlling the flow rate of the material into the measuring hopper. Since the upper opening of the discharge hopper is sealed and connected with the aggregate bin outlet, and the discharge hopper and the hopper door are covered with sealing covers, and the sealing covers are connected with the outer walls of the discharge hopper and the outer walls of the measuring hopper to form a sealed space, the whole process of unloading is carried out in the sealed space, thus avoiding the problem of dust overflow and reducing pollution to the environment. At the same time, the driving component is installed on the outside of the sealing cover, which reduces the influence of dust on the driving component and is beneficial to prolonging the service life of the driving component.

[0018] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic structural diagram of an aggregate bin unloading device provided in an embodiment of the present application;

[0021] Figure 2 A three-dimensional schematic diagram of an aggregate bin unloading device provided in an embodiment of the present application;

[0022] Figure 3 A schematic structural diagram of a bucket door of an aggregate bin unloading device provided in an embodiment of the present application.

[0023] The text annotations in the figure represent:

[0024] 1. Aggregate bin; 2. Discharging hopper; 3. Bucket door; 4. Hard cover; 5. Flexible cover; 6. Driving assembly; 7. Measuring bucket; 9. Stop valve; 10. Observation port; 11. Gravity balance block; 31. Bottom plate; 32. Side plate; 61. Cylinder; 62. Rotating rod; 63. Bearing. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] This embodiment provides an aggregate bin unloading device for unloading materials in the aggregate bin 1 to the measuring hopper 7. The unloading device includes:

[0028] A discharge hopper 2, the discharge hopper 2 has openings at both ends, the upper end opening of the discharge hopper 2 is sealed and connected to the discharge port of the aggregate bin 1, the lower end opening of the discharge hopper 2 is arranged above the weighing hopper 7, and a hopper door 3 is arranged at the lower end opening of the discharge hopper 2, and the hopper door 3 has a first state of closing the lower end opening of the discharge hopper 2 and a second state of opening the lower end opening of the discharge hopper 2;

[0029] A sealing cover is arranged outside the discharge hopper 2 and the hopper door 3, the upper end of the sealing cover is sealed and connected to the outer wall of the discharge hopper 2, and the lower end of the sealing cover is sealed and softly connected to the outer wall of the metering hopper 7;

[0030] The driving assembly 6 is installed outside the sealing cover, and the driving end of the driving assembly 6 is connected to the bucket door 3. The driving assembly 6 is used to drive the bucket door 3 to switch between the first state and the second state.

[0031] Please refer to Figure 1The discharge port of the aggregate bin 1 is directly above the feed port of the metering hopper 7, and the unloading device is used to control the flow rate of the material in the aggregate bin 1 into the metering hopper 7. The discharge hopper 2 is a hollow quadrangular prism structure, and the upper opening is a large-diameter end, which is sealed and connected to the outlet of the aggregate bin 1 to prevent dust from overflowing at the discharge port of the aggregate bin 1 during unloading. The lower opening of the discharge hopper 2 is a small-diameter end, and a hopper door 3 is arranged below it. When the hopper door 3 is in the first state, the hopper door 3 is located directly below the lower opening of the discharge hopper 2 to block the material from flowing into the metering hopper 7. When the hopper door 3 is in the second state, the hopper door 3 deviates from the lower opening of the discharge hopper 2 so that the material can enter the metering hopper 7 through the lower opening of the discharge hopper 2. A sealing cover is arranged outside the discharge hopper 2 and the hopper door 3, the upper end of the sealing cover is sealed and connected to the side wall of the discharge hopper 2 near the upper end opening, and the lower end of the sealing cover is sealed and softly connected to the outer wall of the weighing hopper 7 near the feed port, the sealing soft connection can play a role in not affecting the weighing accuracy of the weighing hopper 7, and the driving component 6 for switching the state of the hopper door 3 is arranged outside the sealing cover.

[0032] When it is necessary to discharge the material in the aggregate bin 1 to the measuring hopper 7, the material in the aggregate bin 1 will flow into the discharge hopper 2 from the aggregate bin 1 outlet due to gravity. Since a hopper door 3 is provided at the lower opening of the discharge hopper 2, the driving component 6 drives the hopper door 3 to close the lower opening of the discharge hopper 2 or open the lower opening of the discharge hopper 2, thereby controlling the flow rate of the material into the measuring hopper 7; since the upper opening of the discharge hopper 2 is sealed and connected with the aggregate bin 1 outlet, and the discharge hopper 2 and the hopper door 3 are both covered with a sealing cover, and the sealing cover is connected with the outer wall of the discharge hopper 2 and the outer wall of the measuring hopper 7 to form a sealed space, the whole process of unloading is carried out in the sealed space, avoiding the problem of dust overflow and reducing pollution to the environment. At the same time, the driving component 6 is installed on the outside of the sealing cover, which reduces the influence of dust on the driving component 6, which is beneficial to prolonging the service life of the driving component 6, and the lower end of the sealing cover is sealed and softly connected with the outer wall of the measuring hopper, which does not affect the accuracy of the weighing of the measuring hopper 7.

[0033] In a preferred embodiment, the sealing cover includes a hard cover body 4 and a flexible cover body 5 sealed to one end of the hard cover body 4, the free end of the hard cover body 4 is sealed to the outer wall of the discharge hopper 2, and the free end of the flexible cover body 5 is sealed and softly connected to the outer wall of the measuring hopper 7.

[0034] like Figure 1 As shown, the hard cover body 4 is a rectangular box shell made of metal material, and the flexible cover body 5 is a cover body made of canvas material. Since the drive component 6 needs to be installed outside the sealing cover and cannot affect the accuracy of the measuring bucket 7, the upper end of the sealing cover is set as the hard cover body 4 and the lower end is set as the flexible cover body 5.

[0035] In a preferred embodiment, there are two drive assemblies 6 , and the two drive assemblies 6 are symmetrically arranged on both sides of the hard cover body 4 about the axis of the bucket door 3 .

[0036] like Figure 2 As shown, two driving components 6 are respectively arranged on two opposite sides of the hard cover body 4, and the connection between the driving end of the driving component 6 and the two ends of the bucket door 3 is also symmetrical about the axis of the bucket door 3, ensuring that the bucket door 3 is balanced when switching between the first state and the second state, thereby ensuring that the bucket door 3 is prevented from running off the side, closing the door loosely, and other problems. Among them, the axis of the bucket door 3 is collinear with the axis of the discharge hopper 2.

[0037] In a preferred embodiment, the hopper door 3 includes an arc-shaped bottom plate 31, which is arranged opposite to the lower opening of the discharge hopper 2. The opposite ends of the bottom plate 31 are respectively connected to side plates 32. The two side plates 32 are symmetrically arranged about the central axis of the bottom plate 31, and the central axis direction of the bottom plate 31 is perpendicular to the length direction of the bottom plate; a gravity balance block 11 is provided on the side of the bottom plate 31 away from the discharge hopper 2, and the center of gravity of the gravity balance block 11 is located on the central axis of the bottom plate 31.

[0038] like Figure 3 As shown, the hopper 3 includes an arc-shaped bottom plate 31, the side surface of the bottom plate 31 close to the discharge hopper 2 is an inwardly concave curved surface, and the side surface of the bottom plate 31 away from the discharge hopper 2 is an outwardly convex curved surface, and the two ends of the bottom plate 31 in the length direction are respectively connected with fan-shaped side plates 32, and a gravity balance block 11 is welded on the side of the bottom plate 31 away from the discharge hopper 2, wherein the weight of the gravity balance block 11 is much greater than the weight of the hopper 3. In this embodiment, the gravity balance block 11 is a channel steel, and the center of gravity of the bottom plate 31 is located on the central axis of the bottom plate 31. The center of 11 is aligned with the center of the bottom plate 31, and the center of gravity of the gravity balance block 11 is also located on the central axis of the bottom plate 31, that is, the center of gravity of the gravity balance block 11 is on the same straight line as the center of gravity of the bottom plate 31. When the hopper 3 is in the first state, the gravity balance block prevents the hopper 3 from deviating from the lower opening of the discharge hopper to avoid material leakage. When the hopper 3 is in the second state, if the drive assembly 6 fails, the hopper 3 automatically closes the opening at the lower end of the discharge hopper 2 through the deadweight of the gravity balance block 11 to avoid repeated feeding.

[0039] In a preferred embodiment, the driving assembly 6 includes a cylinder 61 and a rotating rod 62. The cylinder 61 is hinged on the hard cover body 4. The output end of the cylinder 61 is rotatably connected to the rotating rod 62. The free end of the rotating rod 62 is rotatably connected to the side plate 32 located on the same side. A through hole is opened on the hard cover body 4, and a bearing 63 is installed in the through hole. The rotating rod 62 and the side plate 32 located on the same side are rotatably connected through the bearing.

[0040] like Figure 2 , Figure 3As shown, the drive assembly 6 includes a cylinder 61. In the present embodiment, the cylinder 61 is a light cylinder with a valve 4M310-12. The cylinder 61 is hinged to one side of the hard cover body 4. Specifically, an extension plate is provided on the hard cover shell 4, and the cylinder 61 is hinged to the extension plate. The output end of the cylinder 61 is the free end of the piston rod. The piston rod of the cylinder is rotatably connected to the rotating rod 62. A through hole is provided on the side wall of the hard cover body 4 close to the cylinder. A bearing 63 is installed in the through hole. The outer ring of the bearing 63 is fixedly connected to the through hole. The inner ring of the bearing 63 is provided with a bucket shaft. One end of the bucket shaft is fixedly connected to the end of the rotating rod 62 away from the cylinder 61, and the other end is fixedly connected to the adjacent side plate 32.

[0041] When the piston rod of the cylinder 61 is extended, it will drive the rotating rod 62 to rotate, thereby causing the bucket door 3 to rotate accordingly, and the bucket door 3 gradually rotates away from the lower end opening of the discharge hopper 2, realizing the switch from the first state to the second state; when the piston rod of the cylinder 61 is retracted, it will drive the rotating rod 62 to rotate in the opposite direction, thereby causing the bucket door 3 to rotate accordingly, and the bucket door 3 gradually rotates to just below the lower end opening of the discharge hopper 2, realizing the switch from the second state to the first state. Since the rotating rod 62 is connected to the side plate 32 by means of the bearing 63, the resistance during the rotation process is reduced, and the various components of the drive assembly 6 are detachable, which is convenient for replacement or maintenance.

[0042] In a preferred embodiment, a plurality of transparent observation ports 10 are provided on the hard cover body 4 .

[0043] like Figure 2 As shown, observation ports 10 are provided on the four side walls of the hard cover body 4. The observation ports 10 are sealed with transparent materials such as glass, so that personnel can clearly see the internal unloading situation. In addition, the glass at the observation port 10 can also be set to be openable, which is only for observation during normal use and can also be used as a maintenance port during maintenance to facilitate inspection.

[0044] In a preferred embodiment, a stop valve 9 is provided at the connection between the upper opening of the discharge hopper 2 and the discharge port of the aggregate bin 1. Figure 2 As shown, the stop valve 9 can be a plate valve or a rod valve. In this embodiment, a rod valve is used. When the unloading device needs to be repaired, a rod can be inserted into the valve to block and intercept the material at the outlet of the aggregate bin 1 to prevent the material from flowing into the unloading hopper 2. Compared with the traditional maintenance that requires all the materials in the aggregate bin to be emptied before maintenance, it is more convenient for personnel to repair the unloading device or the measuring hopper 7; at the same time, since the hopper door and the aggregate bin are designed separately, they can be taken out separately for maintenance.

[0045] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An aggregate bin unloading device, used for unloading materials in an aggregate bin (1) into a weighing hopper (7), characterized in that: The unloading device comprises: A discharge hopper (2), the discharge hopper (2) having openings at both ends, the upper end opening of the discharge hopper (2) being sealedly connected to the discharge port of the aggregate bin (1), the lower end opening of the discharge hopper (2) being arranged above the weighing hopper (7), a hopper door (3) being arranged at the lower end opening of the discharge hopper (2), the hopper door (3) having a first state of closing the lower end opening of the discharge hopper (2) and a second state of opening the lower end opening of the discharge hopper (2); A sealing cover, the sealing cover is arranged outside the discharge hopper (2) and the hopper door (3), the upper end of the sealing cover is sealed and connected to the outer wall of the discharge hopper (2), and the lower end of the sealing cover is sealed and softly connected to the outer wall of the metering hopper (7); A driving assembly (6), wherein the driving assembly (6) is mounted outside the sealing cover, a driving end of the driving assembly (6) is connected to the hopper door (3), and the driving assembly (6) is used to drive the hopper door (3) to switch between the first state and the second state.

2. The aggregate bin unloading device according to claim 1, characterized in that: The sealing cover comprises a hard cover body (4) and a flexible cover body (5) sealed to one end of the hard cover body (4); the free end of the hard cover body (4) is sealed to the outer wall of the discharge hopper (2); and the free end of the flexible cover body (5) is sealed to the outer wall of the measuring hopper (7).

3. The aggregate bin unloading device according to claim 2, characterized in that: The number of the driving components (6) is two, and the two driving components (6) are symmetrically arranged on both sides of the hard cover body (4) with respect to the axis of the bucket door (3).

4. The aggregate bin unloading device according to claim 3, characterized in that: The hopper door (3) comprises an arc-shaped bottom plate (31), the bottom plate (31) being arranged opposite to the lower opening of the discharge hopper (2), the two opposite ends of the bottom plate (31) being respectively connected to side plates (32), the two side plates (32) being symmetrically arranged about the central axis of the bottom plate (31), and the central axis direction of the bottom plate (31) being perpendicular to the length direction of the bottom plate (31).

5. The aggregate bin unloading device according to claim 4, characterized in that: A gravity balance block (11) is provided on a side of the bottom plate (31) away from the discharge hopper (2), and the center of gravity of the gravity balance block (11) is located on the central axis of the bottom plate (31).

6. The aggregate bin unloading device according to claim 5, characterized in that: The driving assembly (6) comprises a cylinder (61) and a rotating rod (62), wherein the cylinder (61) is hinged on the hard cover body (4), the output end of the cylinder (61) is rotatably connected to the rotating rod (62), and the free end of the rotating rod (62) is rotatably connected to the side plate (32) located on the same side.

7. The aggregate bin unloading device according to claim 6, characterized in that: The hard cover body (4) is provided with a through hole, a bearing (63) is installed in the through hole, and the rotating rod (62) and the side plate (32) located on the same side are rotatably connected via the bearing (63).

8. The aggregate bin unloading device according to claim 2, characterized in that: The hard cover body (4) is provided with a plurality of transparent observation ports (10).

9. The aggregate bin unloading device according to claim 1, characterized in that: A stop valve (9) is provided at the connection between the upper opening of the discharge hopper (2) and the discharge port of the aggregate bin (1).

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