A silo device with a vacuum arch breaking function

Abstract

The application discloses a silo device with a vacuum arch breaking function, which comprises a silo body, a discharge channel, a vacuum arch breaking mechanism and a gate valve; the silo body is used for storing materials and is provided with a feeding port, a discharging port and a ventilation opening communicated with the atmosphere; the upper end of the discharge channel is communicated with the discharging port of the silo body, and the lower end of the discharge channel is connected with the gate valve; an opening is arranged on the side of the discharge channel and is connected with the vacuum arch breaking mechanism; the vacuum arch breaking mechanism comprises a vacuum cylinder and a vacuum sealing head installed in the vacuum cylinder; when no material passes through the discharge channel, the gate valve is closed, the vacuum arch breaking mechanism is actuated, and the vacuum sealing head moves away from the discharge channel; compared with the stirring arch breaking, the core arch breaking mechanism of the application is driven by hydraulic pressure and will not be stuck due to insufficient driving force to drive rotation; the vacuum sealing head moves in a straight line and the friction force is constant, thereby avoiding vibration or shaking caused by transverse stress.

Description

TECHNICAL FIELD

[0001] The present application relates to a stock bin device, in particular a stock bin device with a vacuum arch breaking function. BACKGROUND

[0002] When the material is stored in the stock bin, the material flows to the stock bin discharge port only by relying on the gravity of the material itself, and the bridging and arching of the material in the stock bin is prone to occur, which leads to the abnormal unloading of the stock bin, especially for the dewatered sludge with a water content of 55% to 85% or similar highly viscous material, the viscosity is high, and the material has strong adhesion, which is more prone to abnormal unloading in varying degrees, which not only affects the full play of the stock bin, but also damages the continuity of production.

[0003] At present, there are many arch breaking methods for domestic stock bins, such as manual arch breaking, vibration arch breaking, water arch breaking, wind arch breaking, mechanical arch breaking, etc. Among them, the use of stirring blades for uninterrupted stirring is a relatively widely used arch breaking device, such as the arch breaking feeding hopper disclosed in patent document CN216917534U, but it also brings many problems:

[0004] The high viscosity of the sludge in the bin will stick to the stirring blades, causing the arch breaking to fail, or causing the driving to be blocked, the torque of the shaft to increase, and eventually the driving force to be insufficient to drive the rotation and to be stuck;

[0005] The sludge sticking to the blades is not uniformly distributed, so that when the stirring blades rotate, the center of mass is not at the center of rotation, causing an imbalance. The imbalance not only causes transverse vibration or shaking of the entire device, but also causes unnecessary dynamic load on the shaft, which is not conducive to operation and affects the service life.

[0006] The motor and speed reducer of the driving device are generally placed outside the stock bin, and the blades in the stock bin are rotated and stirred by the shaft, which has high requirements for the coaxiality and sealing of the device assembly. SUMMARY

[0007] In order to solve at least one of the technical problems existing in the above background art, the present application provides a stock bin device with a vacuum arch breaking function, which is suitable for storing dewatered sludge with a water content of 55% to 85% or similar highly viscous material.

[0008] To achieve the above purpose, the technical scheme of the present application is:

[0009] A stock bin device with a vacuum arch breaking function, comprising a bin body, a discharge passage, a vacuum arch breaking mechanism and a gate valve;

[0010] The bin body is used for storing material and is provided with a feeding port, a discharge port and a ventilation opening in communication with the atmosphere;

[0011] The upper end of the discharge channel is connected with the discharge port of the bin body, and the lower end of the discharge channel is connected with the gate valve; an opening is arranged on the side of the discharge channel and connected with the vacuum arch-breaking mechanism;

[0012] The vacuum arch-breaking mechanism comprises a vacuum cylinder and a vacuum sealing head installed in the vacuum cylinder.

[0013] When the bin is normally discharging and no material passes through the discharge channel, the gate valve is closed, and the vacuum arch-breaking mechanism is actuated, and the vacuum sealing head moves away from the discharge channel.

[0014] Therefore, the bin device with the vacuum arch-breaking function increases a discharge channel with the vacuum arch-breaking mechanism below the bin body, when the bridging phenomenon occurs during discharging, the gate valve is closed, the vacuum sealing head is retracted, the cavity below the bridged material is enlarged, according to the ideal gas law, the temperature and the amount of gas substance are constant, the gas volume is enlarged, the gas pressure is reduced, the pressure difference is formed above and below the bridged material, when the pressure difference is large enough, the bridged structure is destroyed by the downward force, the material falls down due to gravity and continues to discharge through the discharge channel, thereby achieving the arch-breaking of the bin.

[0015] Compared with the existing stirring arch-breaking, the vacuum arch-breaking mechanism of the device is linear motion, the friction is constant, the vacuum sealing head loss is normal, and the service life of the mechanism is not affected by the amount of material. Meanwhile, since the vacuum arch-breaking mechanism is installed outside the bin, the material can be isolated during maintenance, and the maintenance is more convenient and fast.

[0016] Further, the vacuum arch-breaking mechanism further comprises a hydraulic cylinder; the hydraulic cylinder comprises a cylinder barrel, a piston rod and a piston.

[0017] One end of the cylinder barrel is fixedly connected with the vacuum sealing head, and the other end penetrates through the vacuum cylinder.

[0018] The piston rod and the piston are assembled in the cylinder barrel, and a sealing element on the piston divides the inner cavity of the cylinder barrel into a rodless cavity and a rod cavity.

[0019] Two flow channels are arranged in the piston rod and connected with the hydraulic oil pipe; one flow channel is connected with the rodless cavity, and the other flow channel is connected with the rod cavity.

[0020] In this way, the vacuum sealing head can be driven to reciprocate in the vacuum cylinder by the hydraulic cylinder.

[0021] Further, the vacuum arch-breaking mechanism further comprises a mounting seat; one end of the vacuum cylinder is fixed in the side opening of the discharge channel through a flange and bolts, and the other end is fixed on the mounting seat and provided with exhaust holes on the end face to ensure smooth operation of the vacuum seal head

[0022] Further, the hydraulic cylinder further comprises a sealing seat which is assembled in the cylinder barrel; a space between the sealing seat and the piston in the cylinder barrel forms a rod cavity. By providing the sealing seat, the hydraulic oil in the cylinder barrel can be prevented from leaking to the outside.

[0023] Further, a guide belt is arranged between the cylinder barrel and the vacuum cylinder to facilitate the relative movement between the cylinder barrel and the vacuum cylinder

[0024] Further, the tail of the piston rod is located outside the cylinder barrel, passes through the center of the sealing seat and is connected to the mounting seat through a flange and bolts; the mounting seat is fixedly connected to the support frame. In this way, the vacuum arch-breaking mechanism can be fixedly installed.

[0025] Further, the vacuum cylinder is a circular tube, and the inner wall of the cylinder is plated with hard chromium. In combination with the exhaust holes, the vacuum seal head can be further ensured to operate smoothly and the sealing element can be prevented from being damaged.

[0026] Further, an infrared sensor is installed at the bottom of the discharge channel to detect whether the material passes.

[0027] Further, the gate valve is controlled by hydraulic pressure or air pressure.

[0028] Further, when the silo device is working:

[0029] When discharging, the gate valve is opened, and the infrared sensor starts to work to detect whether the material falls; when the infrared sensor detects that the material does not normally fall, the gate valve is closed, the hydraulic oil enters the rod cavity to drive the cylinder barrel and the vacuum seal head to move away from the discharge channel until the vacuum seal head reaches the tail of the vacuum cylinder, and the hydraulic oil stops entering; after a delay for a certain period of time, the hydraulic oil enters the rodless cavity to drive the cylinder barrel and the vacuum seal head to move towards the discharge channel until the vacuum seal head reaches the initial position at the front end of the vacuum cylinder, and thus the device completes one cycle of arch-breaking circulation; the circulation continues until the infrared sensor detects that the material normally falls, the gate valve is opened, and the cylinder barrel and the vacuum seal head return to the initial position to complete the arch-breaking.

[0030] Compared with the prior art, the present application has the following advantages:

[0031] The application provides a silo with a vacuum arch breaking function, a discharge channel with a vacuum arch breaking mechanism is added below a silo body, when bridging occurs during discharge, a gate valve is closed, a vacuum sealing head is retracted, the volume of a cavity below the arching material is increased, according to the ideal gas law, the volume of the gas is increased under the condition that the temperature and the amount of gas substance are unchanged, the gas pressure is reduced, at this time, the pressure difference is formed above and below the arching material, when the pressure difference is large enough, the arching structure above the arching material is subjected to a downward force sufficient to break the arching structure, the arching structure is broken, the material falls down due to gravity, and the discharge continues through the discharge channel, then the vacuum sealing head is extended to return to the original position, which is a arch breaking cycle. An infrared sensor for detecting whether the material falls is arranged at the discharge channel near the gate valve, when no material is detected to fall, it is determined that bridging occurs, the device starts to operate, and the arch breaking cycle is performed, and the process is repeated until the arch breaking is successful.

[0032] Compared with the stirring arch breaking, the core arch breaking mechanism of the application is driven by hydraulic pressure, and will not be stuck due to insufficient driving force to drive rotation; the vacuum sealing head is in linear motion and the friction force is constant, avoiding vibration or shaking caused by lateral force; the vacuum sealing head loss is normal loss, and the service life of the mechanism will not be affected by the amount of material; at the same time, the coaxiality requirement of the device assembly can be greatly reduced, and the structure is simple and the sealing performance is better.

[0033] Compared with the stirring arch breaking, the core mechanism device of the application is outside the silo. When maintenance is needed, the material can be isolated for maintenance, and the maintenance is more convenient and fast.

[0034] In the core mechanism device of the application, the cylinder of the hydraulic cylinder is used as the execution element of the mechanism, which greatly reduces the number of intermediate parts, saves the floor space, and makes the structure more compact and convenient for maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The structure diagram of the silo device with the vacuum arch breaking function is provided for the embodiment of the application.

[0036] Figure 2 The structure diagram of the vacuum arch breaking mechanism is provided.

[0037] Figure 3 The partial enlarged view of the I part of the vacuum arch breaking mechanism is provided.

[0038] In the figure: 1-warehouse body; 2-support frame; 3-unloading channel; 4-vacuum arch breaking mechanism; 5-shutter valve; 11-discharge port; 12-support seat; 31-infrared sensor; 41-vacuum cylinder; 42-hydraulic cylinder; 43-vacuum sealing head; 44-mounting seat; 45-guide ring; 46-sealing element; 411-exhaust hole; 421-cylinder barrel; 422-piston rod; 423-piston; 424-sealing seat; 425-guide belt; 4211-rodless cavity; 4212-rod cavity; 4221-retraction oil port; 4222-extension oil port. DETAILED DESCRIPTION

[0039] EMBODIMENT

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection, signal connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "head", "tail", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the application.

[0041] The technical solutions of the present application will be further described below in combination with the drawings and embodiments.

[0042] Referring to Figure 1 The embodiment provides a warehouse device with a vacuum arch breaking function, which mainly comprises a warehouse body 1, an unloading channel 3, a vacuum arch breaking mechanism 4 and a shutter valve 5.

[0043] The warehouse body 1 is used for storing materials and is made of steel plates, has a feed inlet and a discharge port 11 connected with external material conveying equipment, and the top opening is in communication with the atmosphere; the support seat 12 is arranged on the side of the warehouse body 1 and connected with the support frame 2, so as to facilitate the mounting and fixing of the warehouse body 1.

[0044] The upper end of the unloading channel 3 is connected with the discharge port 11 of the warehouse body; the side end of the unloading channel 3 has an opening and a flange connected with the vacuum arch breaking mechanism 4, both of which are located on the same axis and in communication with each other; the lower end of the unloading channel 3 is connected with the feed inlet of the shutter valve 5, and three infrared sensors 31 are further arranged at the bottom of the unloading channel 3 to detect whether there is material passing through the unloading channel 3

[0045] The gate valve 5 is hydraulically or pneumatically controlled, that is, the opening and closing of the gate valve 5 can be controlled by hydraulic or pneumatic control, so as to control the material in the bin to be discharged through the lower end of the discharge passage 3 to perform the discharge work.

[0046] As shown in Figure 2 The vacuum cylinder 41 is a circular tube, the front end is fixed to the side wall of the discharge passage 3 by a flange and bolts, and the tail end is fixed to the mounting seat 44. The inner wall of the cylinder is plated with hard chromium to ensure smooth operation of the vacuum sealing head 43 and not to damage the sealing element. The vacuum sealing head 43 is installed inside the vacuum cylinder 41. The vacuum sealing head 43 is installed with a sealing steel skeleton, a guide ring 45, a sealing element 46 and is in close contact with the inner wall of the vacuum cylinder 41 to ensure no leakage.

[0047] Specifically, the hydraulic cylinder 42 mainly consists of a cylinder barrel 421, a piston rod 422, a piston 423 and a sealing seat 424. The head of the cylinder barrel 421 is fixedly connected with the vacuum sealing head 43. The tail end of the cylinder barrel 421 penetrates through the tail end of the vacuum cylinder 41. The piston rod 422, the piston 423 and the sealing seat 424 are assembled in the cylinder barrel. The sealing element on the piston 423 divides the inner cavity of the cylinder barrel 421 into two parts, a rodless cavity 4211 and a rod cavity 4212. The sealing seat 424 ensures that the hydraulic oil in the cylinder barrel 421 does not leak to the outside. By injecting hydraulic oil into the rod cavity or the rodless cavity, the retraction or extension of the cylinder barrel 421 can be controlled. The tail end of the piston rod 422 is located outside the cylinder barrel 421, penetrates through the center of the sealing seat 424 and is connected with the mounting seat 44 by a flange and bolts. The mounting seat 44 is fixedly connected with the support frame 2, so that the stable installation of the vacuum arch breaking mechanism 4 can be realized.

[0048] Specifically, two flow channels are processed in the piston rod 422. The hydraulic oil can enter the rodless cavity and the rod cavity of the cylinder barrel 421 through the two flow channels respectively. The tail end of the piston rod 422 is processed with a retraction oil port 4221 and an extension oil port 4222. The retraction oil port 4221 communicates with the rod cavity 4212 through one flow channel of the piston rod 422. The extension oil port 4222 communicates with the rodless cavity 4211 through the other flow channel of the piston rod 422. After the extension oil port 4222 and the retraction oil port 4221 are directly connected with the external hydraulic oil pipe and connected with the hydraulic control system loop.

[0049] As shown in Figure 3 The tail end surface of the vacuum cylinder 41 is provided with an exhaust hole 411 to ensure smooth operation of the vacuum sealing head. A guide belt 425 is provided between the cylinder barrel 421 and the vacuum cylinder 41 to facilitate the relative movement between the two.

[0050] The working process of the device is as follows:

[0051] When discharging, the gate valve 5 is opened, and the infrared sensor 31 starts to work to detect whether the material falls down; when the infrared sensor 31 detects that the material does not fall down normally, the gate valve 5 is closed, the hydraulic oil enters the rod cavity through the retraction oil port 4221 at the tail of the piston rod 422 to drive the cylinder barrel 421 and the vacuum sealing head 43 to move in the direction away from the discharging channel 3 until the vacuum sealing head 43 reaches the tail of the vacuum cylinder 41, and the hydraulic oil stops entering the retraction oil port 4221; after a delay of 1 second, the hydraulic oil enters the rodless cavity through the extension oil port 4222 at the tail of the piston rod 422 to drive the cylinder barrel 421 and the vacuum sealing head 43 to move in the direction close to the discharging channel 3 until the vacuum sealing head 43 reaches the initial position at the front end of the vacuum cylinder 41, and thus the device completes an arch breaking cycle in a period; the cycle continues until the infrared sensor 31 detects that the material falls down, the gate valve 5 is opened, the cylinder barrel 421 and the vacuum sealing head 43 return to the initial position, and the device completes the arch breaking.

[0052] In another case, during the operation of the vacuum arch breaking mechanism 4, a small part of the material is inevitably sucked into the vacuum cylinder 41, and when the vacuum sealing head 43 returns to the initial position at the front end of the vacuum cylinder 41 after the arch breaking cycle, the material sucked into the vacuum cylinder 41 is pushed back into the discharging channel 3 along with the movement of the vacuum sealing head 43.

[0053] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the essence of the present application should be covered within the protection scope of the present application.

Claims

1. A silo device with vacuum arch-breaking function, characterized in that, This includes the silo body, unloading channel, vacuum arch-breaking mechanism, and gate valve; The silo is used to store materials and is equipped with an inlet, an outlet, and a ventilation opening that connects to the atmosphere. The upper end of the unloading channel is connected to the discharge port of the silo, and the lower end of the unloading channel is connected to the gate valve; an opening is provided on the side of the unloading channel for connection and installation with the vacuum arch-breaking mechanism. The vacuum arch-breaking mechanism includes a vacuum cylinder and a vacuum sealing head installed inside the vacuum cylinder; When the hopper is unloading normally and no material is detected passing through the unloading channel, the gate valve closes, the vacuum arch breaking mechanism is activated, and the vacuum sealing head moves away from the unloading channel. The vacuum arch-breaking mechanism also includes a hydraulic cylinder; the hydraulic cylinder includes a cylinder barrel, a piston rod, and a piston; One end of the cylinder is fixedly connected to the vacuum sealing head, and the other end passes through the vacuum cylinder; The piston rod and piston are assembled inside the cylinder, and the seal on the piston divides the inner cavity of the cylinder into two parts: a rodless cavity and a rod cavity. The piston rod is provided with two flow channels for connecting to the hydraulic oil pipe; one flow channel is connected to the rodless chamber and the other flow channel is connected to the rod chamber. The piston rod tail is located outside the cylinder, passes through the center of the sealing seat, and is connected to the mounting seat via a flange and bolts; the mounting seat is fixedly connected to the support frame. An infrared sensor is installed at the bottom of the unloading channel to detect whether material is passing through.

2. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, The vacuum arch-breaking mechanism also includes a mounting base; one end of the vacuum cylinder is fixed to the side opening of the unloading channel by a flange and bolts, and the other end is fixed to the mounting base and has an exhaust hole on its end face.

3. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, The hydraulic cylinder also includes a sealing seat, which is assembled inside the cylinder barrel; inside the cylinder barrel, the space between the sealing seat and the piston forms a rod chamber.

4. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, A guide belt is provided between the cylinder and the vacuum cylinder.

5. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, The vacuum cylinder is cylindrical with its inner wall plated with hard chrome.

6. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, The gate valve is hydraulically or pneumatically controlled.

7. The silo device with vacuum arch-breaking function as described in claim 1, characterized in that, When the silo device is in operation: During unloading, the gate valve opens, and the infrared sensor starts working to detect whether the material is falling. When the infrared sensor detects that the material is not falling normally, the gate valve closes, and hydraulic oil enters the rod chamber to drive the cylinder and vacuum sealing head to move away from the unloading channel until the vacuum sealing head reaches the tail of the vacuum cylinder, at which point the hydraulic oil stops entering. After a certain delay, hydraulic oil enters the rodless chamber to drive the cylinder and vacuum sealing head to move closer to the unloading channel until the vacuum sealing head reaches the initial position at the front of the vacuum cylinder. At this point, the device has completed one cycle of arch breaking. The cycle continues until the infrared sensor detects that the material is falling normally, the gate valve opens, and the cylinder and vacuum sealing head return to their initial positions, completing the arch breaking process.

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