Bulk material storage devices

Abstract

A bulk material storage device includes a support system connected to a sealed silo, which is a storage bin for bulk materials. The sealed silo has at least one inlet at its top. The lower part of the sealed silo is connected to a discharge system fixed to the support system or the sealed silo. A breathing system is fixed to the sealed silo. The breathing system includes an external breathing pipe located inside the sealed silo. One end of the external breathing pipe connects to the internal space at the top of the sealed silo, and the other end extends to the outside of the sealed silo, connecting to the outside. Compared to the prior art, the technical advantage of this invention is that, with its internal and external breathing systems, the bottom and top of the sealed silo remain connected to the outside during bulk material discharge. No air cavity forms at the bottom of the sealed silo, and no vacuum zone appears in its top space, ensuring smooth discharge.

Description

Technical Field

[0001] This invention relates to a bulk material storage device, particularly applicable to industries handling bulk materials such as bulk cement, flour, grain, and feed. Background Technology

[0002] Currently, our company has developed a "multi-functional bulk material storage vehicle," as detailed in Chinese Patent Publication No. CN111055896A. It is capable of transporting bulk materials in batches; however, the discharge from the storage vehicle is not smooth.

[0003] Therefore, further improvements are needed. Summary of the Invention

[0004] The technical problem this invention aims to solve is: how to design a storage cart / storage device with smooth material discharge.

[0005] The specific technical solution of the present invention is as follows:

[0006] A bulk material storage device includes a support system connected to a fixed sealed silo, which is a silo for storing bulk materials. The silo has at least one inlet at its top, and a discharge system connected to its lower part. The discharge system is fixed to the support system or the sealed silo. A breathing system is fixed to the sealed silo. The breathing system includes an external breathing pipe located inside the sealed silo. One end of the external breathing pipe connects to the internal space at the top of the sealed silo, and the other end extends to the outside of the sealed silo and connects to the outside. The breathing system also includes at least one internal breathing pipe located inside the sealed silo. The internal breathing pipe is vertically arranged, with its lower end connecting to the bottom space of the sealed silo and its upper end having a distance from the inner wall of the top of the sealed silo.

[0007] The top of the sealed chamber has at least three feed inlets along its length, with the middle feed inlet being the main feed inlet and the other two feed inlets being secondary feed inlets.

[0008] The discharge system includes a horizontal auger, a vertical auger, and a discharge hose. The horizontal auger is located at the bottom of the sealed chamber. The outer wall of the horizontal auger has multiple discharge through holes, which connect the interior of the horizontal auger to the bottom of the sealed chamber. The outlet of the horizontal auger connects to the bottom of the vertical auger.

[0009] The outer wall of the vertical auger includes an upper outer wall and a lower outer wall. The lower outer wall is fixed to the support system or the sealing chamber. The lower end of the upper outer wall is fitted into or inserted into the upper end of the lower outer wall and the two are rotatably connected. The outlet of the upper outer wall is connected to one end of the discharge hose, which is located above the sealing chamber.

[0010] The lower end of the upper outer wall is fitted inside the upper end of the lower outer wall. The lower end of the upper outer wall is threaded with a clamping bolt. The clamping bolt is set in the radial direction of the vertical auger. When the clamping bolt contacts the upper end of the lower outer wall, the upper and lower outer walls cannot rotate. When the clamping bolt does not contact the upper end of the lower outer wall, the upper and lower outer walls can rotate.

[0011] A boom is fixed on the upper outer wall, and the boom is connected to the discharge hose via ropes. The boom is located above the discharge hose.

[0012] The outer end of the external breathing tube extends from the bottom of the sealed chamber to the outside.

[0013] The lower part of the sealed chamber has a cone-shaped cross-section that is wider at the top and narrower at the bottom, with the horizontal auger located below the tip of the cone.

[0014] The lower end of the internal breathing tube is fixed to the outer wall of the auger, and the inside of the internal breathing tube is connected to the inside of the auger.

[0015] The breathing system includes multiple parallel internal breathing tubes, which are staggered with the discharge through-holes; the discharge through-holes are square holes; multiple square blades are fixed to the auger main shaft at the discharge end of the horizontal or vertical auger, and the square blades are radially and evenly distributed along the radial direction of the auger main shaft; there are four or six square blades; a transition shaft is keyed to the end of the auger main shaft at the feed end of the horizontal or vertical auger, and a support plate is fixed to the outer wall of this end. The support plate has a rotating cavity on the side facing the transition shaft, and one end of the transition shaft extends into the rotating cavity. A space is provided between the transition shaft and the bottom wall of the rotating cavity. The rotating ball and transition shaft are clearance-fitted with the side wall of the rotating cavity; the bottom of the rotating cavity and the end of the transition shaft are both provided with recesses that mate with the rotating ball; the outer wall of the horizontal or vertical auger is fixed with a support plate via a flange; the support system includes a base frame, which is fixed with four hydraulic outriggers; four weight sensors are installed between the base frame and the sealing chamber; the base frame is rectangular, and the four weight sensors are distributed at the four corners of the base frame. These four weight sensors are electrically connected to a PLC, which is electrically connected to the auger motor of the discharge system; the PLC is electrically connected to a human-machine interface device; an auxiliary feeding pipe is fixed on the sealing chamber, which assists in feeding... The inner end of the feed pipe extends into the top of the silo, and its upper end is at a distance from the inner wall of the sealed silo top. A portion of the auxiliary feed pipe extends inward along the top wall of the sealed silo, and this portion of the auxiliary feed pipe has two discharge holes with an included angle of 45° between the spray directions of the two discharge holes. Multiple weighing plates are fixed on the sealed silo, and weight sensors are installed on the support system. The number of weighing plates matches the number of weight sensors, and the weighing plates are located above the weight sensors. Pads are fixed on the support system, and nuts are fixed on the weighing plates. The nuts are threaded with bolts, which are vertically installed, and the upper end of the bolt is a nut. When the lower end of the bolt contacts the pad, there is a distance between the weighing plate and the weight sensor; when the lower end of the bolt does not contact the pad, the weighing plate contacts the weight sensor; multiple legs are fixed on the sealed chamber, and the support system is equipped with leg sleeves. The number of legs and leg sleeves are matched. The upper part of the leg sleeve is open, and the lower end of the leg is located inside the leg sleeve. There are circular through holes on the two opposite side walls of the leg sleeve. There are vertical strip holes on the leg. The pin passes through one circular through hole, one strip hole, and another circular through hole in sequence; there are six pairs or four pairs of legs and leg sleeves.

[0016] Compared with the prior art, the technical effect of the present invention is that the present invention is equipped with an internal and external breathing system, which ensures that the bottom and top of the sealed chamber can be connected to the outside when the bulk material is discharged. No air cavity is formed at the bottom of the sealed chamber and no vacuum zone appears in the top space, which ensures that the material is discharged very smoothly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the principle of bulk material discharge.

[0018] Figure 2 This is a schematic diagram (a) of the present invention.

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of the adjusting bolt.

[0020] Figure 4 for Figure 3 An enlarged diagram showing the legs without the leg covers.

[0021] Figure 5 This is a schematic diagram (a) showing the removal of the sealed chamber wall according to the present invention.

[0022] Figure 6 for Figure 5 Enlarged diagram of the top of the internal breathing tube.

[0023] Figure 7 This is a schematic diagram (II) showing the removal of the sealed chamber wall according to the present invention.

[0024] Figure 8 for Figure 7 Enlarged schematic diagram of the feed through-hole.

[0025] Figure 9 This is a schematic diagram (III) showing the removal of the sealed chamber wall according to the present invention.

[0026] Figure 10 This is a schematic diagram (a) showing the removal of the sealed chamber wall and the outer wall of the horizontal auger in this invention.

[0027] Figure 11 for Figure 10 Enlarged schematic diagram of the discharge end of the horizontal auger.

[0028] Figure 12 This is a schematic diagram (II) showing the removal of the sealed chamber wall and the outer wall of the horizontal auger in this invention.

[0029] Figure 13 for Figure 12 Enlarged schematic diagram of the discharge end of the horizontal auger.

[0030] Figure 14 This is a schematic diagram (II) of the present invention.

[0031] Figure 15 for Figure 14 Schematic sectional view along the AA direction.

[0032] Figure 16 for Figure 15 An enlarged schematic diagram of region a.

[0033] Figure 17 This is a schematic diagram (III) showing the removal of the sealed chamber wall according to the present invention.

[0034] Figure 18 for Figure 17 Enlarged schematic diagram of the lower end of the horizontal auger.

[0035] Figure 19 This is a schematic diagram (III) of the present invention.

[0036] Figure 20 A schematic diagram of a bulk material storage device for replenishment.

[0037] Figure 21 A schematic diagram of the replenishment process for a bulk material storage device. Detailed Implementation

[0038] Our company's research has revealed that the reason for the uneven material discharge from the silo is as follows:

[0039] like Figure 1 A typical silo is a sealed silo 900, with a discharge auger 901 at the bottom. When bulk materials (hereinafter referred to as materials) are discharged, the materials will enter the discharge auger 901 from the auger inlet 903 and then be discharged under the drive of the auger.

[0040] The problem is that when material is fed into the sealed chamber 900, the air at the bottom of the sealed chamber 900 is trapped inside, forming an air cavity 902. The air cavity 902 blocks the flow from the sealed chamber 900 to the auger inlet 903. Moreover, the discharge auger 901 cannot remove the air from the air cavity 902, resulting in the inability to discharge material.

[0041] Furthermore, during material discharge, as the normal material zone 900 continues to fall, an upper vacuum zone 904 will form above the normal material zone 900. The upper vacuum zone 904 will exert an attractive force on the normal material zone 900 and will also hinder material discharge.

[0042] Our company has concluded that the new bulk material storage device needs to break the air chamber 902 and the upper vacuum zone 904 in order to preserve the material and ensure smooth discharge.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0044] like Figure 2 A bulk material storage device includes a support system 100, which is connected to a sealed silo 200. The sealed silo 200 is a silo for storing bulk materials. It has at least one inlet 201 at its top. The lower part of the sealed silo 200 is connected to a discharge system 300. The discharge system 300 is fixed to the support system 100 or the sealed silo 200. A breathing system 400 is fixed to the sealed silo 200.

[0045] like Figure 2 , 9The top of the sealed chamber 200 has at least three feed inlets 201 along its length, with the middle feed inlet 201 being the main feed inlet and the other two feed inlets 201 being secondary feed inlets. When feeding material into the sealed chamber 900, the main feed inlet is generally used first. Because the material is in granular form, this can result in the following situation: when the main feed inlet is full, but there is still space at both ends of the top of the sealed chamber 200, the secondary feed inlets can be used to maximize the amount of material loaded.

[0046] like Figure 2 , 17 The respiratory system 400 includes an external breathing tube 260, which is located inside the sealed chamber 200. One end of the external breathing tube 260 connects to the internal space at the top of the sealed chamber 200, and the other end extends to the outside of the sealed chamber 200 and connects to the outside. The function of the external breathing tube 260 is to connect the top space inside the sealed chamber 200 with the outside, facilitating the breaking of the upper vacuum zone 904 mentioned above. For the relationship between the inner end of the external breathing tube 260 and the top of the sealed chamber 200, refer to the relationship between the upper end of the internal breathing tube 420 and the top of the sealed chamber 200.

[0047] like Figure 2 , 5 6.17. The respiratory system 400 also includes at least one internal breathing tube 420, which is located inside the sealed chamber 200. The number of internal breathing tubes 420 depends on the length of the sealed chamber 200, with approximately one internal breathing tube 420 every 0.3-0.6 meters. The internal breathing tubes 420 are vertically arranged, with their lower ends connected to the bottom space of the sealed chamber 200, and their upper ends (see reference numeral 421) having a distance from the inner wall of the top of the sealed chamber 200 (see reference numeral 423). The function of the internal breathing tubes 420 is to facilitate the breaking of the lower vacuum zone 902 mentioned above by connecting the top space and the bottom space inside the sealed chamber 200. When feeding from the inlet 201, the material may enter the inner breathing tube 420 from the upper end and block the inner breathing tube 420. Therefore, the upper end of the inner breathing tube 420 should be as close as possible to the inner wall of the top of the sealed chamber 200, as long as the upper end of the inner breathing tube 420 can allow air to enter and exit.

[0048] like Figure 5-8The discharge system 300 includes a horizontal auger 310, a vertical auger 320, and a discharge hose 340. The horizontal auger 310 is located at the bottom of the sealed chamber 200. Multiple discharge through-holes 311 are provided on the outer wall of the horizontal auger 310, connecting the interior of the horizontal auger 310 to the bottom of the sealed chamber 200. The outlet of the horizontal auger 310 connects to the bottom of the vertical auger 320. The horizontal auger 310 is positioned at a low level to facilitate the automatic discharge of all materials from the sealed chamber 200. However, since the inlet of the receiving equipment may be relatively high (such as a cement mixer), the vertical auger 320 is provided to increase the height of the discharge port of the discharge system 300.

[0049] like Figure 5 The outer wall of the vertical auger 320 includes an upper outer wall 330 and a lower outer wall 321. The lower outer wall 321 is fixed to the support system 100 or the sealing chamber 200. The lower end of the upper outer wall 330 is fitted into or inserted into the upper end of the lower outer wall 321, and the two are rotatably connected. The outlet of the upper outer wall 330 (see reference numeral 332 in the attached drawing) is connected to one end of the discharge hose 340, which is located above the sealing chamber 200. In this way, the upper outer wall 330, the fixed discharge hose 340, and the boom 350 can all rotate along the axis of the vertical auger 320, which facilitates the matching and cooperation between the discharge port of the discharge system 300 and the receiving equipment.

[0050] like Figure 5 The lower end of the upper outer wall 330 is fitted inside the upper end of the lower outer wall 321. The lower end of the upper outer wall 330 is threadedly fitted with a clamping bolt 328, which is arranged radially along the vertical auger 320. When the clamping bolt 328 contacts the upper end of the lower outer wall 321, the upper outer wall 330 and the upper end of the lower outer wall 321 cannot rotate; when the clamping bolt 328 does not contact the upper end of the lower outer wall 321, the upper outer wall 330 and the upper end of the lower outer wall 321 can rotate. In this way, the clamping bolt 328 is similar to a lock, which can adjust the rotational state of the upper outer wall 330 and the lower outer wall 321.

[0051] like Figure 5 In order to keep the discharge hose 340 stable, a boom 350 is fixed on the upper outer wall 330. The boom 350 is connected to the discharge hose 340 by a rope (the rope is not shown in the diagram). The boom 350 is located above the discharge hose 340.

[0052] like Figure 17 To prevent the outer end of the external breathing tube 260 from being damaged, it extends from the bottom of the sealed chamber 200 to the outside.

[0053] like Figure 2 , 15To facilitate material discharge, the lower part of the sealed chamber 200 has a cone-shaped cross section 210 that is larger at the top and smaller at the bottom, and the horizontal auger 310 is located below the cone tip of the sealed chamber 200.

[0054] like Figure 7-8 To allow the respiratory system to reach a more downstream position, the lower end of the internal breathing tube 420 is fixed to the outer wall of the horizontal auger 310, and the interior of the internal breathing tube 420 is connected to the interior of the horizontal auger 310 (see reference numeral 423 in the attached figure). When the interior of the internal breathing tube 420 is connected to the interior of the horizontal auger 310, when feeding into the sealing chamber 200, the air inside the horizontal auger 310 will travel along the internal breathing tube 420 directly to the top of the sealing chamber 200, and the air chamber 902 mentioned above will not be formed inside the horizontal auger 310.

[0055] like Figure 7-8 To ensure even air intake, the breathing system 400 includes multiple parallel internal breathing pipes 420, which are staggered with the discharge through-holes 311. In this way, each internal breathing pipe 420 corresponds to one discharge through-hole 311, making the intake of outside air more uniform.

[0056] like Figure 7-8 The discharge through hole 311 is a square hole.

[0057] like Figure 9-13 To facilitate auger discharge, multiple square blades 317 are fixed to the auger main shaft 315 (the rotating shaft that fixes the spiral blades 316) at the discharge end of the horizontal auger 310 or vertical auger 320. These square blades 317 are radially and evenly distributed along the auger main shaft 315. Material reaching this area is propelled by the square blades 317, relying on centrifugal force (or inertial force, which causes rotating objects to move away from their center of rotation). The material moves away from the auger main shaft 315 at a greater speed and enters the vertical auger 320 or the discharge hose 340. Figure 9-13 The text only shows the horizontal auger 310 area; the discharge end of the vertical auger 320 is the same and will not be shown again.

[0058] The square blade 317 has four or six blades.

[0059] When the horizontal auger 310 or vertical auger 320 drives the material to discharge, its main shaft will also be subjected to a reverse reaction force. That is to say, there is an axial force between the end of the main shaft and the outer wall of the auger, as well as a circumferential rotational friction force. Generally, a thrust bearing is used for connection. However, there are two problems: First, the length of the sealed chamber 200 can be 4-8 meters, and the discharge speed is also fast (it can take about 20-30 minutes to discharge all the material in the entire chamber). The reaction force is very large, and the axial force borne by the thrust bearing is also large, which will accelerate the damage of the thrust bearing. Second, the material may be very fine (such as cement). Even if there is a sealing component at the upstream end of the thrust bearing, the material will still enter the thrust bearing, which will accelerate the damage of the thrust bearing.

[0060] Therefore, such as Figure 14-16 The feed end of the auger spindle (see reference numeral 327) of the horizontal auger 310 or the vertical auger 320 is keyed to the transition shaft 600. The outer wall of this end (see reference numeral 322) is fixed to the support plate 610. The support plate 610 has a rotating cavity 611 on the side facing the transition shaft 600. One end of the transition shaft 600 (the end away from the auger spindle) extends into the rotating cavity 611. A ball bearing 620 is provided between the transition shaft 600 and the bottom cavity wall of the rotating cavity 611. The transition shaft 600 and the side cavity wall of the rotating cavity 611 are in clearance fit. When the auger main shaft rotates (works), the transition shaft 600 rotates synchronously with the auger main shaft, while the support plate 610 and the outer wall of the auger remain stationary. The two are connected by the rotating ball 620. The rotating ball 620 can resist the reaction force mentioned above and overcome the circumferential rotational friction. Moreover, the space between the rotating ball 620 and the side wall of the rotating cavity 611 is relatively large, so there is no fear of material entering. At the same time, the side wall of the rotating cavity 611 can also provide radial support for the transition shaft 600. Even if the rotating ball 620 is slightly worn, it will not affect its operation, which is very practical.

[0061] like Figure 16 In order to facilitate the positioning of the rotating ball 620, the bottom of the rotating cavity 611 and the end of the transition shaft 600 are provided with concave cavities 612 that cooperate with the rotating ball 620 to prevent the rotating ball 620 from swinging left and right.

[0062] like Figure 16 To ensure a secure fit, the outer wall of the horizontal auger 310 or the vertical auger 320 is secured to the support plate 610 via flange 615.

[0063] See Figure 12In order to adjust the height of the support system 100, the support system 100 includes a base frame 140, which is fixed with four hydraulic outriggers 141. When the bulk material storage device is loaded onto a vehicle, the hydraulic outriggers 141 extend, the height of the base frame 140 increases, making it easier for the vehicle to enter the lower part of the base frame 140; the hydraulic outriggers 141 shorten, the height of the base frame 140 decreases, and the base frame 140 presses down on the vehicle to complete the loading.

[0064] like Figure 2 , 12 To facilitate control of the discharge rate, four weight sensors 110 are installed between the base frame 140 and the sealed chamber 200. The base frame 140 is rectangular, and the four weight sensors 110 are distributed at the four corners of the base frame 140. These four weight sensors 110 are electrically connected to a PLC (not shown in the figure), and the PLC is electrically connected to the auger motor of the discharge system 300 (see [reference]). Figure 5 (See attached figure 331).

[0065] Before discharge, four weight sensors 110 measure the total weight W1 of the sealed chamber 200 and the material. If the discharge weight is W2, after discharge begins, the real-time data measured by the four weight sensors 110 is promptly transmitted to the PLC. When the real-time data measured by the four weight sensors 110 equals (W1-W2), it indicates that W2 has been discharged. At this time, the PLC notifies the auger motor of the discharge system 300 to stop, which facilitates control of the discharge amount.

[0066] PLCs are electrically connected to human-machine interface devices for easy operation.

[0067] like Figure 17 When loading materials into the sealed chamber 200, some companies use pipelines for transportation and require the present invention to connect with them using pipelines. For this purpose, an auxiliary feeding pipeline 410 is fixed on the sealed chamber 200. The inner end of the auxiliary feeding pipeline 410 extends into the top of the chamber, and its upper end is a distance from the inner wall of the top of the sealed chamber 200 (see the upper end position of the internal breathing tube 420 for this distance). The outer end of the auxiliary feeding pipeline 410 (see reference numeral 412 in the figure) can connect with the pipelines of these companies.

[0068] like Figure 17 For convenient feeding, a portion of the auxiliary feeding pipe 410 extends inward along the top wall of the sealed chamber 200. This portion of the auxiliary feeding pipe 410 is provided with two discharge holes 411 (only one row is shown in the figure). The included angle between the spray directions of the two discharge holes 411 is 45°, so that the material is sprayed to both sides at the same time during feeding, achieving rapid feeding.

[0069] During transportation, the sealed chamber 200 may be affected by road bumps and other factors. If the sealed chamber 200 is overweight, it will be very detrimental to the weight sensor and may even be damaged. Moreover, the weight sensor will be unusable in this situation.

[0070] Therefore, such as Figure 2-4 Multiple (usually four) weighing plates 240 are fixed on the sealed chamber 200. A weight sensor 110 is provided on the support system 100. The number of weighing plates 240 matches the number of weight sensors 110. The weighing plates 240 are located above the weight sensors 110. A pad 111 is fixed on the support system 100. A nut 241 is fixed on the weighing plate 240. The nut 241 is internally threaded with a bolt 242. The bolt 242 is vertically set. The upper end of the bolt 242 is a nut 242. When the lower end of the bolt 242 (see reference numeral 243 in the attached drawing) contacts the pad 111, there is a distance between the weighing plate 240 and the weight sensor 110 (meaning that the two do not contact each other). When the lower end of the bolt 242 (see reference numeral 243 in the attached drawing) does not contact the pad 111, the weighing plate 240 contacts the weight sensor 110. In this way, the weighing plate 240 can be adjusted to whether it contacts the weight sensor 110 by turning the screw 242 (during transportation, the two do not contact each other to protect the weight sensor 110; during operation, the two contact each other so that the weight sensor 110 can weigh normally).

[0071] In the above adjustments, the vertical position of the sealed chamber 200 needs to be changed; that is, the sealed chamber 200 needs to maintain a degree of freedom in the vertical direction. However, during transportation, the horizontal direction of the sealed chamber 200 also needs to be constrained. A special connection method is required between the support system 100 and the fixed sealed chamber 200, as follows:

[0072] like Figure 2-4 Multiple (usually four) support legs 230 are fixed on the sealed chamber 200. The support system 100 is provided with a leg sleeve 120. The number of support legs 230 matches the number of leg sleeves 120. The upper part of the leg sleeve 120 is open. The lower end of the support leg 230 is located inside the leg sleeve 120. Circular through holes 121 are provided on the two opposite side walls of the leg sleeve 120. The support leg 230 is provided with a vertically oriented strip hole 231. A pin (not shown in the figure) passes through one circular through hole 121, the strip hole 231, and another circular through hole 121 in sequence.

[0073] The support legs 230 and the leg sleeves 120 are either six pairs or four pairs.

[0074] During transportation, the leg sleeve 120 provides horizontal restraint to the outrigger 230, and the pin prevents the outrigger 230 from protruding vertically from the leg sleeve 120, making transportation relatively safe. However, by sliding the pin within the slot 231, the sealed chamber 200 has a very small vertical movement space relative to the support system 100. This small movement space is sufficient to allow for adjustment of whether the weighing plate 240 contacts the weight sensor 110.

[0075] The bulk material storage device of the present invention is relatively advanced, but it still has some shortcomings: when a bulk material storage device finishes unloading material from a material-using component (such as a cement mixing plant), the working bulk material storage device needs to be moved away, and then a new full bulk material storage device needs to be used to unload material from the material-using component (such as a cement mixing plant). In this way, the replacement of the two bulk material storage devices takes about half an hour, and it cannot continuously supply material to the material-using component.

[0076] Therefore, such as Figure 20 A replenishing bulk material storage device, which has the same structure as a bulk material storage device, except that the outlet of the upper outer wall 330 of the vertical auger 320 (see reference numeral 332) is connected to a different downstream discharge component: the outlet of the upper outer wall 330 of the replenishing bulk material storage device (see reference numeral 332) is connected to the inlet of the replenishing auger 700, and the outlet of the replenishing auger 700 (see reference numeral 701) is connected to a replenishing pipe (not shown in the figure).

[0077] like Figure 20 To facilitate connection with the bulk material storage device during operation, the feeding pipe is a flexible hose.

[0078] like Figure 20-21 A method for replenishing a bulk material storage device involves first using a transport vehicle 802 to transport the replenishing bulk material storage device 800 to the operating bulk material storage device (see reference numeral 801 in the attached drawing). Then, the upper outer wall 330 of the vertical auger 320 is rotated (manually or mechanically) so that the replenishing auger 700 points towards the operating bulk material storage device. The replenishing pipe is then inserted into the inlet 201 of the operating bulk material storage device, driving the discharge system of the replenishing bulk material storage device 800 to transfer the material from the replenishing bulk material storage device 800 to the operating bulk material storage device. This process takes approximately 20 minutes.

[0079] The means of transport 802 is a motor vehicle.

[0080] In this way, when there is not much material remaining in the working bulk material storage device, the material in the replenishing bulk material storage device 800 can be transferred to the working bulk material storage device. During the transfer process, the working bulk material storage device can still continue to discharge material without affecting the operation of the material-using components (such as cement mixing plants). This realizes the continuous supply of material from the working bulk material storage device to the cement mixing plant, which is very convenient.

[0081] Its working principle is as follows:

[0082] The following explanation uses cement as an example.

[0083] like Figure 1-19The bulk material storage device is placed on a motor vehicle and moved to the cement plant. Bulk cement from the cement plant is transported to the bulk material storage device through the inlet 201 or the auxiliary inlet pipe 410. The bulk material storage device is then transported to the cement application site by the motor vehicle, so that the discharge hose 340 is aligned with the inlet of the cement mixing plant. With the cooperation of weight sensors and PLC components, the bulk material storage device can accurately supply materials to the cement mixing plant.

[0084] When the remaining material in the bulk material storage device is low, the material is transferred from the working bulk material storage device (see attached reference numeral 801) to the working bulk material storage device 800 via air pumping or replenishment through the 410 pipeline, making it very convenient for the bulk material storage device to continuously supply material to the cement mixing plant.

[0085] For other details, please refer to the existing technology.

[0086] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A bulk material storage device, comprising a support system (100), the support system (100) being connected to a fixed sealed silo (200), the sealed silo (200) being a silo for storing bulk materials, having at least one inlet (201) at its top, the lower part of the sealed silo (200) being connected to a discharge system (300), the discharge system (300) being fixed to the support system (100) or the sealed silo (200), characterized in that: A respiratory system (400) is fixed on the sealed chamber (200); The respiratory system (400) includes an external breathing tube (260) located inside the sealed chamber (200). One end of the external breathing tube (260) is connected to the internal space at the top of the sealed chamber (200), and the other end of the external breathing tube (260) extends to the outside of the sealed chamber (200) and is connected to the outside. The respiratory system (400) also includes at least one internal breathing tube (420), which is located inside the sealed chamber (200). The internal breathing tube (420) is vertically arranged, and its lower end is connected to the bottom space of the sealed chamber (200). Its upper end is a distance from the inner wall of the top of the sealed chamber (200). When discharging bulk materials, the bottom and top of the sealed chamber (200) can be connected to the outside world. No air cavity will be formed at the bottom of the sealed chamber (200) and no vacuum area will appear in its top space, so that the material can be discharged smoothly.

2. The bulk material storage device as described in claim 1, characterized in that: The top of the sealed chamber (200) is provided with at least three feed ports (201) along its length, wherein the middle feed port (201) is the main feed port and the other two feed ports (201) are the auxiliary feed ports.

3. The bulk material storage device as described in claim 2, characterized in that: The discharge system (300) includes a horizontal auger (310), a vertical auger (320), and a discharge hose (340). The horizontal auger (310) is located at the bottom of the sealed chamber (200). The outer wall of the horizontal auger (310) is provided with multiple discharge through holes (311). The discharge through holes (311) connect the interior of the horizontal auger (310) with the bottom of the sealed chamber (200). The outlet of the horizontal auger (310) is connected to the bottom of the vertical auger (320).

4. The bulk material storage device as described in claim 3, characterized in that: The outer wall of the vertical auger (320) includes an upper outer wall (330) and a lower outer wall (321). The lower outer wall (321) is fixed on the support system (100) or the sealing chamber (200). The lower end of the upper outer wall (330) is fitted into or inserted into the upper end of the lower outer wall (321) and the two are rotatably connected. The outlet of the upper outer wall (330) is connected to one end of the discharge hose (340), which is located above the sealing chamber (200).

5. The bulk material storage device as described in claim 4, characterized in that: The lower end of the upper outer wall (330) is fitted inside the upper end of the lower outer wall (321). The lower end of the upper outer wall (330) is threaded with a clamping bolt (328). The clamping bolt (328) is set along the radial direction of the vertical auger (320). When the clamping bolt (328) contacts the upper end of the lower outer wall (321), the upper ends of the upper outer wall (330) and the lower outer wall (321) cannot rotate. When the clamping bolt (328) does not contact the upper end of the lower outer wall (321), the upper ends of the upper outer wall (330) and the lower outer wall (321) can rotate.

6. The bulk material storage device as described in claim 5, characterized in that: A boom (350) is fixed on the upper outer wall (330). The boom (350) is connected to the discharge hose (340) by a rope. The boom (350) is located above the discharge hose (340).

7. The bulk material storage device as described in claim 6, characterized in that: The outer end of the external breathing tube (260) extends from the bottom of the sealed chamber (200) to the outside.

8. The bulk material storage device as described in claim 7, characterized in that: The lower cross-sectional shape (210) of the sealed chamber (200) is a cone shape with a larger top and a smaller bottom, and the horizontal auger (310) is located below the cone tip of the sealed chamber (200).

9. The bulk material storage device as described in claim 8, characterized in that: The lower end of the internal breathing tube (420) is fixed to the outer wall of the transverse auger (310), and the interior of the internal breathing tube (420) is connected to the interior of the transverse auger (310).

10. The bulk material storage device as described in claim 9, characterized in that: The breathing system (400) includes multiple parallel internal breathing tubes (420), which are arranged alternately with the discharge through-hole (311); The discharge through hole (311) is a square hole; Multiple square blades (317) are fixed on the auger main shaft (315) at the discharge end of the horizontal auger (310) or vertical auger (320). The square blades (317) are radially square and evenly distributed along the auger main shaft (315). The square blades (317) are provided in four or six; The feed end of the auger spindle of the horizontal auger (310) or the vertical auger (320) is keyed to the transition shaft (600). The outer wall of the end is fixed with a support plate (610). The support plate (610) has a rotating cavity (611) on the side facing the transition shaft (600). One end of the transition shaft (600) extends into the rotating cavity (611). A ball bearing (620) is provided between the transition shaft (600) and the bottom cavity wall of the rotating cavity (611). The transition shaft (600) and the side cavity wall of the rotating cavity (611) are in clearance fit. The bottom of the rotating cavity (611) and the end of the transition shaft (600) are both provided with recesses (612) that cooperate with the ball bearing (620). The outer wall of the horizontal auger (310) or vertical auger (320) is fixed with a support plate (610) via a flange (615); The support system (100) includes a base frame (140) which fixes four hydraulic outriggers (141). Four weight sensors (110) are provided between the base frame (140) and the sealed chamber (200). The base frame (140) is rectangular, and the four weight sensors (110) are distributed at the four corners of the base frame (140). The four weight sensors (110) are electrically connected to the PLC, and the PLC is electrically connected to the auger motor of the discharge system (300). PLC electrical connection to human-machine interface equipment; An auxiliary feed pipe (410) is fixed on the sealed chamber (200). The inner end of the auxiliary feed pipe (410) extends into the top of the chamber, and its upper end is at a distance from the inner wall of the top of the sealed chamber (200). A portion of the auxiliary feed pipe (410) extends inward along the top wall of the sealed chamber (200), and this portion of the auxiliary feed pipe (410) is provided with two discharge holes (411), the included angle between the spray directions of the two discharge holes (411) is 45°; Multiple weighing plates (240) are fixed on the sealed chamber (200). Weight sensors (110) are provided on the support system (100). The number of weighing plates (240) matches the number of weight sensors (110). The weighing plates (240) are located above the weight sensors (110). A pad (111) is fixed on the support system (100). A nut (241) is fixed on the weighing plate (240). The nut (241) is threaded with a bolt (242). The bolt (242) is set vertically. The upper end of the bolt (242) is a nut (242). When the lower end of the bolt (242) contacts the pad (111), there is a distance between the weighing plate (240) and the weight sensor (110). When the lower end of the bolt (242) does not contact the pad (111), the weighing plate (240) contacts the weight sensor (110). Multiple support legs (230) are fixed on the sealed chamber (200). The support system (100) is provided with a leg sleeve (120). The number of support legs (230) matches the number of leg sleeves (120). The upper part of the leg sleeve (120) is open. The lower end of the support leg (230) is located inside the leg sleeve (120). The two opposite side walls of the leg sleeve (120) are provided with circular through holes (121). The support leg (230) is provided with a vertical strip hole (231). The pin passes through a circular through hole (121), a strip hole (231), and another circular through hole (121) in sequence. The outriggers (230) and leg sleeves (120) are in six or four pairs.

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