Bevel opening type spiral discharging buffer tank and negative pressure discharging system using bevel opening type spiral discharging buffer tank

Abstract

The invention discloses an oblique opening type spiral discharging buffer tank and a negative pressure discharging system using the oblique opening type spiral discharging buffer tank. The oblique opening type spiral discharging buffer tank comprises a tank body and two discharging units. The tank body gradually inclines downwards in the conveying direction, the tank body comprises a collecting chamber and two discharging channels which are integrally formed, and the slope bottom end of the collecting chamber communicates with the feeding ends of the two discharging channels correspondingly; a discharging opening is formed in the discharging end of the discharging channel. According to the beveled spiral discharging buffer tank, through the design of the inclined tank body, the overall structure is compact, the overall length is shortened, and the beveled spiral discharging buffer tank can adapt to the space-limited environment. The two discharging units are arranged and can be connected with the two collecting systems at the same time, discharging is conducted at the same time, the size of the whole negative pressure collecting system is reduced, and therefore the space needed by the whole negative pressure collecting system is reduced. Through compact design and reasonable structural layout, the problem that the negative pressure collection system occupies a large area is solved, the limitation of a site on equipment is reduced, and the application range of the negative pressure collection system is expanded.

Description

Technical Field

[0001] The invention relates to the field of carriage unloading equipment, and in particular to an oblique-mouth spiral unloading buffer tank and a negative pressure unloading system using the same. Background Art

[0002] At present, coal transportation by open wagon or container is the main mode of transportation in the industry. After arriving at the destination, the materials are generally unloaded by mechanical equipment such as dumpers, screw unloaders, excavators, etc. After unloading, there is still residual material in the carriage, and a negative pressure collection and unloading system is required to replace manual recovery of residual materials. The existing negative pressure collection and unloading system includes a suction nozzle, a separation and dust removal device, a fan and a screw conveyor; the suction nozzle is used to suck the residual coal in the carriage, and the fan draws air to generate negative pressure in the suction nozzle to suck up the residual coal; then, the air and coal powder are separated by the separation and dust removal device, and the air enters the atmosphere through the air outlet of the fan, while the coal powder falls by gravity into the screw conveyor and is transported to the silo.

[0003] However, the existing negative pressure collection and unloading system is large in size and requires sufficient space on the side of the carriage. The unloading area of ​​some trains is limited by the site and cannot leave enough space on the side of the carriage, resulting in the inability to apply the above-mentioned negative pressure collection and unloading system. Manual cleaning is still required to use shovels and brooms to discharge the coal from the side doors of the carriage, resulting in long unloading time and low unloading efficiency. Summary of the invention

[0004] The purpose of the present invention is to propose an oblique-mouth spiral unloading buffer tank to solve the problem that the above-mentioned negative pressure collection and unloading system is large in size and has limited use scenarios due to site restrictions. The purpose of the present invention is also to propose a negative pressure unloading system to solve the problem that the above-mentioned negative pressure collection and unloading system requires a large space.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides an oblique-mouth spiral unloading buffer tank, comprising a tank body and two unloading units; the tank body gradually tilts downward along the conveying direction, the tank body comprises an integrally formed collecting chamber and two unloading channels, the slope bottom end of the collecting chamber is respectively connected to the feeding ends of the two unloading channels; the discharge end of the unloading channel is provided with a unloading port for discharging materials;

[0007] The unloading unit includes a feeding mechanism and a stirring and conveying structure; the feeding mechanisms are respectively arranged on both sides of the collecting chamber, the air inlet end of the feeding mechanism is connected with the external collecting pipeline, and the air outlet end of the feeding mechanism is connected with the external negative pressure system, which is used to suck the material into the collecting chamber; the stirring and conveying structure is arranged on the tank body, and one of the stirring and conveying structures passes through the collecting chamber to enter the unloading channel on one side, and the other stirring and conveying structure passes through the collecting chamber to enter the unloading channel on the other side; the stirring and conveying structure conveys the material from the collecting chamber to the unloading port.

[0008] In the oblique-mouth spiral unloading buffer tank, the feeding mechanism includes a flux control component, an air intake hood and a negative pressure reversing valve;

[0009] The air inlet hood is arranged on the side wall of the collection chamber and is connected with the collection chamber; a material inlet is arranged at the bottom of the air inlet hood; the flux control component is installed at the material inlet, and the air inlet end of the flux control component is connected with the external collection pipeline; the flux control component is used to control the flux of the material; the negative pressure reversing valve is arranged at the top of the collection chamber, and the negative pressure reversing valve includes an air inlet and two air outlets, the air inlet is connected with the collection chamber, and the two air outlets are respectively connected to the external negative pressure system.

[0010] In the oblique-mouth spiral unloading buffer tank, the flux control assembly includes a support frame, a connecting pipe mounting seat, a connecting pipe, a first driving member, a first plug plate, a second driving member and a second plug plate;

[0011] The support frame is arranged on the side wall of the collecting chamber, the connecting pipe mounting seat is arranged on the support frame, the connecting pipe is mounted on the connecting pipe mounting seat, a receiving cavity is arranged in the connecting pipe mounting seat, a first opening having a thickness equal to that of the first plug plate is arranged on the rear side of the connecting pipe, a second opening having a thickness equal to that of the second plug plate is arranged on the front side of the connecting pipe, and the first opening and the second opening are both located in the receiving cavity;

[0012] The first plug plate is slidably mounted on the rear side of the connecting pipe mounting seat, and the first driving member is arranged on the rear side of the supporting frame; the driving end of the first driving member is connected to the first plug plate, and is used to insert the first plug plate into the first opening or pull the first plug plate out of the first opening;

[0013] The second plug plate is slidably mounted on the front side of the connecting pipe mounting seat, and the second driving member is arranged on the front side of the supporting frame; the driving end of the second driving member is connected to the second plug plate, and is used to insert the second plug plate into the second opening or pull the second plug plate out of the second opening;

[0014] The upper end of the connecting pipe is communicated with the material inlet, and the lower end of the connecting pipe is communicated with the external collecting pipeline.

[0015] In the oblique-mouth spiral unloading buffer tank, the feeding mechanism further includes a first air flow aid, and an air outlet end of the first air flow aid is connected to an air inlet hood.

[0016] In the oblique-mouth spiral unloading buffer tank, the collecting chamber is provided with a V-shaped guide plate between the feed ends of the two unloading channels; the V-shaped guide plate is used to guide the materials to the two unloading channels.

[0017] In the oblique-mouth spiral unloading buffer tank, the unloading unit further comprises a second air flow aid, and an air outlet end of the second air flow aid is connected to the bottom of the collecting chamber.

[0018] In the oblique-mouth spiral unloading buffer tank, the stirring and conveying structure includes an auger driving member, a first spiral stirring member, a connecting seat, and a second spiral stirring member;

[0019] The auger driving member is installed at the top of the slope of the collecting chamber, and the driving end of the auger driving member passes through the collecting chamber and is transmission-connected with one end of the first spiral stirring member; the connecting seat is arranged in the discharge channel, and the other end of the first spiral stirring member passes through the connecting seat and is connected with the second spiral stirring member; the spiral direction of the first spiral stirring member and the second spiral stirring member is toward one end of the discharge port.

[0020] In the oblique-mouth spiral unloading buffer tank, the unloading unit further includes a discharging assembly, and the discharging assembly includes a discharging bracket, a blocking driving member and a blocking plate;

[0021] The discharging bracket is mounted on the outside of the discharging port, the material blocking driving component is arranged on the top of the discharging bracket, and the driving end of the material blocking driving component passes through the discharging bracket and is connected to the material blocking plate, and the size of the material blocking plate is adapted to the discharging port; the material blocking driving component and the material blocking plate are used to control the opening or closing of the discharging port.

[0022] In the oblique-mouth spiral unloading buffer tank, the unloading assembly also includes a unloading guide plate, which is sleeved on the outer periphery of the unloading port and the unloading bracket, and the bottom of the unloading guide plate is provided with a unloading port.

[0023] The present invention also provides a negative pressure unloading system, which uses the above-mentioned oblique-mouth spiral unloading buffer tank.

[0024] A technical solution in the present invention can have the following beneficial effects:

[0025] The oblique-mouth spiral unloading buffer tank has a compact overall structure and shortened overall length through the inclined tank body design, and can adapt to space-constrained environments. In addition, two unloading units are provided, which can be connected to two collection systems at the same time to unload at the same time, thereby reducing the volume of the entire negative pressure collection system, thereby reducing the space required for the entire negative pressure collection system. Through compact design and reasonable structural layout, the problems of large volume and large floor space of the existing negative pressure collection system are solved, the restrictions of the site on the equipment are reduced, and the application scope of the negative pressure collection system is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0027] Figure 2 is a side view of one embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the internal structure of one embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of the internal structure of a flux control component in one embodiment of the present invention;

[0030] In the drawings: tank body a; collecting chamber 1, discharge channel 2, feeding mechanism 3, stirring and conveying structure 4; second air flow aid 5; discharge assembly 6;

[0031] V-shaped guide plate 10; discharge port 20; flux control assembly 31, air inlet cover 32, negative pressure reversing valve 33; first air flow aid 34; auger drive 41, first spiral stirring member 42, connecting seat 43, second spiral stirring member 44; discharge bracket 61, material blocking drive 62, material blocking plate 63; discharge guide plate 64;

[0032] Support frame 311 , connecting pipe mounting seat 312 , connecting pipe 313 , first driving member 314 , first plug plate 315 , second driving member 316 , second plug plate 317 ; accommodating cavity 318 ; first opening 319 , second opening 310 ; discharge port 640 . DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0035] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Please refer to Figures 1 to 4 The present invention provides an oblique-mouth spiral unloading buffer tank, comprising a tank body a and two unloading units; the tank body a gradually tilts downward along the conveying direction, the tank body a comprises an integrally formed collecting chamber 1 and two unloading channels 2, the bottom end of the collecting chamber 1 is respectively connected to the feeding ends of the two unloading channels 2; the discharge end of the unloading channel 2 is provided with a unloading port 20 for discharging materials;

[0038] The unloading unit includes a feeding mechanism 3 and a stirring and conveying structure 4; the feeding mechanism 3 is respectively arranged on both sides of the collecting chamber 1, the air inlet end of the feeding mechanism 3 is connected to the external collecting pipeline, and the air outlet end of the feeding mechanism 3 is connected to the external negative pressure system, which is used to suck the material into the collecting chamber 1; the stirring and conveying structure 4 is arranged on the tank body a, and one of the stirring and conveying structures 4 passes through the collecting chamber 1 and enters the unloading channel 2 on one side, and the other stirring and conveying structure 4 passes through the collecting chamber 1 and enters the unloading channel 2 on the other side; the stirring and conveying structure 4 conveys the material from the collecting chamber 1 to the unloading port 20.

[0039] The oblique-mouth spiral unloading buffer tank has a compact overall structure through the inclined tank body a design, shortens the overall length, and can adapt to space-constrained environments. In addition, two unloading units are provided, which can be connected to two collection systems at the same time to unload at the same time, reducing the volume of the entire negative pressure collection system, thereby reducing the space required for the entire negative pressure collection system. Through compact design and reasonable structural layout, the problems of large volume and large floor space of the existing negative pressure collection system are solved, the restrictions of the site on the equipment are reduced, and the application scope of the negative pressure collection system is expanded.

[0040] The feeding mechanism 3 sucks the material into the collecting chamber 1 through the negative pressure system, and the stirring and conveying structure 4 is responsible for conveying the material from the collecting chamber 1 to the discharge port 20 to ensure the continuous conveying and discharge of the material. The oblique-mouth spiral discharge buffer tank is provided with two discharge channels 2 and two stirring and conveying structures 4, which can make the material flow out from different discharge ports at the same time, reduce material accumulation, and ensure uniform conveying and distribution of the material. Especially in the case of large material quantity or large flow rate changes, the two discharge ports can play a role at the same time to reduce the burden of each discharge port; moreover, the risk of blockage can be effectively reduced. Even if there is a problem with one discharge port, the other discharge port can still work normally, ensuring the continuous operation of the equipment and avoiding the time of downtime waiting for maintenance, thereby improving the overall work efficiency.

[0041] Moreover, a V-shaped guide plate 10 is provided between the feed ends of the two discharge channels 2 in the collecting chamber 1, and the materials are discharged by utilizing the effective stirring area of ​​two sets of stirring and conveying structures 4, thereby preventing a single discharge channel from appearing in the discharge port of the collecting chamber 1, resulting in a larger area that cannot be stirred by the stirring and conveying structure 4, thereby avoiding reducing the discharge efficiency.

[0042] Specifically, the feeding mechanism 3 includes a flux control component 31, an air intake hood 32 and a negative pressure reversing valve 33;

[0043] The air inlet hood 32 is arranged on the side wall of the collection chamber 1 and is connected to the collection chamber 1; a material inlet is provided at the bottom of the air inlet hood 32; the flux control component 31 is installed at the material inlet, and the air inlet end of the flux control component 31 is connected to the external collecting pipeline; the flux control component 31 is used to control the flux of the material; the negative pressure reversing valve 33 is arranged at the top of the collection chamber 1, and the negative pressure reversing valve 33 includes an air inlet and two air outlets, the air inlet is connected to the collection chamber 1, and the two air outlets are respectively connected to the external negative pressure system.

[0044] The flux control component 31 in the feeding mechanism 3 controls the flux of the material by adjusting the opening of the material inlet to ensure that the material can smoothly enter the collection chamber 1. The design of the air intake hood 32 allows the material to be evenly distributed when entering the collection chamber 1 to avoid blockage. The negative pressure reversing valve maintains the negative pressure environment in the collection chamber by connecting to the external negative pressure system to ensure that the material can be effectively sucked into the collection chamber.

[0045] In the existing negative pressure system, when the residual coal is a large coal block, it can be directly connected to the fan to discharge the gas directly into the air, and when the residual coal contains finer coal powder, the gas needs to be passed through the bag filter and filtered by the bag before it can be discharged. Since the negative pressure reversing valve 33 is provided with two air outlets, the external negative pressure system can be quickly switched according to the actual situation to avoid discharging coal powder into the atmosphere and causing air pollution.

[0046] Specifically, the flux control assembly 31 includes a support frame 311, a connecting pipe mounting seat 312, a connecting pipe 313, a first driving member 314, a first plug plate 315, a second driving member 316 and a second plug plate 317;

[0047] The support frame 311 is arranged on the side wall of the collection chamber 1, the connecting pipe mounting seat 312 is arranged on the support frame 311, the connecting pipe 313 is mounted on the connecting pipe mounting seat 312, a receiving cavity 318 is arranged in the connecting pipe mounting seat 312, a first opening 319 having a thickness equal to that of the first plug plate 315 is arranged on the rear side of the connecting pipe 313, a second opening 310 having a thickness equal to that of the second plug plate 317 is arranged on the front side of the connecting pipe 313, and the first opening 319 and the second opening 310 are both located in the receiving cavity 318;

[0048] The first plug plate 315 is slidably assembled on the rear side of the connecting pipe mounting seat 312, and the first driving member 314 is disposed on the rear side of the supporting frame 311; the driving end of the first driving member 314 is connected to the first plug plate 315, and is used to insert the first plug plate 315 into the first opening 319 or to pull the first plug plate 315 out of the first opening 319;

[0049] The second plug plate 317 is slidably assembled on the front side of the connecting pipe mounting seat 312, and the second driving member 316 is arranged on the front side of the supporting frame 311; the driving end of the second driving member 316 is connected to the second plug plate 317, and is used to insert the second plug plate 317 into the second opening 310 or pull the second plug plate 317 out of the second opening 310;

[0050] The upper end of the connecting pipe 313 is communicated with the material inlet, and the lower end of the connecting pipe 313 is communicated with the external collecting pipeline.

[0051] In a specific embodiment of the present invention, the support frame 311 is specifically a frame, and the connecting pipe mounting seat 312 includes a first connecting strip, a second connecting strip, an upper connecting plate and a lower connecting plate, the two ends of the first connecting strip are respectively connected to the two inner walls of the frame, the two ends of the second connecting strip are respectively connected to the two inner walls of the frame, the front side of the upper connecting plate is connected to the top of the second connecting strip, the rear side of the upper connecting plate is connected to the top of the first connecting strip, and the two sides of the upper connecting plate are respectively connected to the top of the support frame 311; the front side of the lower connecting plate is connected to the bottom of the second connecting strip, the rear side of the lower connecting plate is connected to the bottom of the first connecting strip, and the two sides of the lower connecting plate are respectively connected to the bottom of the support frame 311.

[0052] The first connecting strip is provided with a first avoidance opening whose thickness matches that of the first plug plate 315, and the second connecting strip is provided with a second avoidance opening whose thickness matches that of the second plug plate 317. The upper connecting plate and the lower connecting plate are both provided with mounting holes matched with the connecting tube 313, and the connecting tube 313 is mounted on the connecting tube mounting seat 312 through the mounting holes of the upper connecting plate and the lower connecting plate. The front side wall of the first connecting strip, the rear side wall of the second connecting strip, the bottom of the upper connecting plate, the top of the lower connecting plate and the inner wall of the supporting frame 311 cooperate to form a receiving cavity 318.

[0053] The first opening 319 and the second opening 310 of the connecting tube 313 are located in the accommodating chamber 318, so as to prevent the first opening 319 and the second opening 310 from being directly connected to the outside, thereby preventing the external debris from being sucked into the collecting chamber 1 during the negative pressure suction of the material. Since the material is sucked under negative pressure, the material will not stay in the accommodating chamber 318 during the negative pressure suction, and therefore, no material will remain in the accommodating chamber 318.

[0054] When the material flux needs to be reduced, the first driving member 314 drives the first plug plate 315 to move forward, so that the first plug plate 315 is inserted into the first opening 319, and the first plug plate 315 can block the flow of the material in the connecting pipe 313, thereby reducing the material flux. Similarly, the second driving member 316 drives the second plug plate 317 to move backward, so that the second plug plate 317 is inserted into the second opening 310, thereby achieving the purpose of reducing the material flux. The first driving member 314 and the second driving member 316 can be started at the same time to further block the material from entering the collection chamber 1.

[0055] When the material flux needs to be increased, the first driving member 314 drives the first plug plate 315 to move backward, so that the first plug plate 315 is pulled out from the first opening 319, and the first plug plate 315 no longer blocks the flow of the material in the connecting pipe 313, thereby achieving the purpose of increasing the material flux. Similarly, the second driving member 316 drives the second plug plate 317 to move forward, so that the second plug plate 317 is pulled out from the second opening 310, and the purpose of reducing the material flux can be achieved. The first driving member 314 and the second driving member 316 can be started at the same time, so that the material can directly enter the collection chamber 1 through the connecting pipe 313.

[0056] Optionally, the feeding mechanism 3 further includes a first air flow aid 34 , and an air outlet end of the first air flow aid 34 is connected to the air inlet hood 32 .

[0057] With the above structure, when the material is blocked in the air intake hood 32, the first air flow aid 34 introduces a strong airflow into the air intake hood 32 to disperse the blocked material, reduce the situation where the material is blocked after entering the air intake hood 32, and avoid the occurrence of blockage problems.

[0058] Specifically, the collecting chamber 1 is provided with a V-shaped guide plate 10 between the feeding ends of the two discharge channels 2 ; the V-shaped guide plate 10 is used to guide the materials to the two discharge channels 2 .

[0059] The V-shaped guide plate 10 has a V-shaped cross-section, which can effectively divert the material entering the collecting chamber 1 to the two discharge channels 2, avoiding the problem of material accumulation or blockage in the collecting chamber 1, thereby improving the material conveying efficiency and the uniformity of unloading, ensuring that the material can smoothly enter the two discharge channels 2 and finally be discharged smoothly from the discharge port 20.

[0060] Preferably, the unloading unit further comprises a second air flow aid 5 , and an air outlet end of the second air flow aid 5 is connected to the bottom of the collecting chamber 1 .

[0061] With the above structure, when the material is blocked in the collecting chamber 1, the second air flow aid 5 introduces a strong airflow into the collecting chamber 1 to disperse the blocked material, reduce the situation where the material is blocked after entering the collecting chamber 1, and avoid the occurrence of blockage problems.

[0062] Specifically, the stirring and conveying structure 4 includes an auger driving member 41, a first spiral stirring member 42, a connecting seat 43, and a second spiral stirring member 44;

[0063] The auger driving member 41 is installed at the top of the slope of the collecting chamber 1, and the driving end of the auger driving member 41 passes through the collecting chamber 1 and is transmission-connected to one end of the first spiral stirring member 42; the connecting seat 43 is arranged in the discharge channel 2, and the other end of the first spiral stirring member 42 passes through the connecting seat 43 and is connected to the second spiral stirring member 44; the spiral direction of the first spiral stirring member 42 and the second spiral stirring member 44 is toward one end of the discharge port 20.

[0064] The auger driving member 41 is used to provide power. When the auger driving member 41 drives the first spiral stirring member 42 to rotate, the first spiral stirring member 42 drives the second spiral stirring member 44 to rotate. Since the spiral directions of the first spiral stirring member 42 and the second spiral stirring member 44 are designed to be toward one end of the discharge port 20, when the first spiral stirring member 42 and the second spiral stirring member 44 are rotating, the material will be transported toward the discharge port 20.

[0065] In practical applications, a bearing is provided on the connection seat 43, and the first spiral stirring member 42 passes through the bearing and is connected to the second spiral stirring member 44, which plays a role in supporting the first spiral stirring member 42 and the second spiral stirring member 44. The connection seat 43 ensures that the first spiral stirring member 42 and the second spiral stirring member 44 are firmly connected, and avoids the first spiral stirring member 42 and the second spiral stirring member 44 from bending or deforming when the material has high viscosity, thereby affecting the material conveying efficiency. The above structure can ensure that the material can smoothly reach the discharge port 20 during the conveying process.

[0066] Through the cooperation between the auger driving member 41 , the first spiral stirring member 42 , and the second spiral stirring member 44 , the material can be smoothly transported from the collecting chamber 1 to the discharge port 20 .

[0067] Furthermore, the unloading unit further comprises a discharging assembly 6, and the discharging assembly 6 comprises a discharging bracket 61, a material blocking driving member 62 and a material blocking plate 63;

[0068] The material discharging bracket 61 is mounted on the outside of the material discharging port 20, the material blocking driving member 62 is arranged on the top of the material discharging bracket 61, and the driving end of the material blocking driving member 62 passes through the material discharging bracket 61 and is connected to the material blocking plate 63, and the size of the material blocking plate 63 is adapted to the material discharging port 20; the material blocking driving member 62 and the material blocking plate 63 are used to control the opening or closing of the material discharging port 20.

[0069] The material discharging bracket 61 is set up outside the discharge port 20 to provide a stable support structure. The material blocking driving member 62 is installed on the top of the material discharging bracket 61. The material blocking driving member 62 is connected to the material blocking plate 63 through the driving end, and can realize the driving and control of the material blocking plate 63.

[0070] When the discharge port 20 needs to be opened, the material blocking driving member 62 drives the material blocking plate 63 to move upward to prevent the material blocking plate 63 from blocking the front end of the discharge port 20, so that the material can flow out of the discharge port 20 smoothly. When the discharge port 20 needs to be closed, the material blocking driving member 62 drives the material blocking plate 63 to move downward to block the material blocking plate 63 at the front end of the discharge port 20, so that the material cannot flow out. Through the cooperation of the material blocking driving member 62 and the material blocking plate 63, the opening or closing of the discharge port 20 can be effectively controlled to ensure that the discharge port 20 can be completely closed or opened when needed, thereby realizing the control of the material discharge process.

[0071] Furthermore, the discharge assembly 6 further includes a discharge guide plate 64 , which is sleeved on the outer periphery of the discharge port 20 and the discharge bracket 61 , and a discharge port 640 is provided at the bottom of the discharge guide plate 64 .

[0072] With the above structure, the outer periphery of the discharge port 20 and the discharge bracket is wrapped by the discharge guide plate 64, so that the material is discharged from the lower discharge port 640, which can effectively guide the material, and can use gravity and less external force to avoid accumulation or stagnation caused by poor discharge; it can also avoid the problem of splashing when the material flows directly out of the discharge port 20. In addition, the internal space layout is optimized, the distance between the material receiving equipment in the existing system is reduced, and the overall length of the equipment is indirectly reduced.

[0073] The present invention also provides a negative pressure unloading system, which uses the above-mentioned oblique-mouth spiral unloading buffer tank.

[0074] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific embodiments of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An oblique-mouth spiral unloading buffer tank, characterized in that: It comprises a tank body and two unloading units; the tank body gradually tilts downward along the conveying direction, the tank body comprises an integrally formed collecting chamber and two unloading channels, the bottom end of the collecting chamber is respectively connected to the feeding ends of the two unloading channels; the discharge end of the unloading channel is provided with a unloading port for discharging materials; The unloading unit includes a feeding mechanism and a stirring and conveying structure; the feeding mechanisms are respectively arranged on both sides of the collecting chamber, the air inlet end of the feeding mechanism is connected with the external collecting pipeline, and the air outlet end of the feeding mechanism is connected with the external negative pressure system, which is used to suck the material into the collecting chamber; the stirring and conveying structure is arranged on the tank body, and one of the stirring and conveying structures passes through the collecting chamber to enter the unloading channel on one side, and the other stirring and conveying structure passes through the collecting chamber to enter the unloading channel on the other side; the stirring and conveying structure conveys the material from the collecting chamber to the unloading port.

2. The oblique-mouth spiral unloading buffer tank according to claim 1 is characterized in that: The feeding mechanism includes a flux control component, an air intake hood and a negative pressure reversing valve; The air inlet hood is arranged on the side wall of the collection chamber and is connected with the collection chamber; a material inlet is arranged at the bottom of the air inlet hood; the flux control component is installed at the material inlet, and the air inlet end of the flux control component is connected with the external collection pipeline; the flux control component is used to control the flux of the material; the negative pressure reversing valve is arranged at the top of the collection chamber, and the negative pressure reversing valve includes an air inlet and two air outlets, the air inlet is connected with the collection chamber, and the two air outlets are respectively connected to the external negative pressure system.

3. The oblique-mouth spiral unloading buffer tank according to claim 2 is characterized in that: The flux control assembly includes a support frame, a connecting pipe mounting seat, a connecting pipe, a first driving member, a first plug plate, a second driving member and a second plug plate; The support frame is arranged on the side wall of the collecting chamber, the connecting pipe mounting seat is arranged on the support frame, the connecting pipe is mounted on the connecting pipe mounting seat, a receiving cavity is arranged in the connecting pipe mounting seat, a first opening having a thickness equal to that of the first plug plate is arranged on the rear side of the connecting pipe, a second opening having a thickness equal to that of the second plug plate is arranged on the front side of the connecting pipe, and the first opening and the second opening are both located in the receiving cavity; The first plug plate is slidably mounted on the rear side of the connecting pipe mounting seat, and the first driving member is arranged on the rear side of the supporting frame; The driving end of the first driving member is connected to the first plug board and is used to insert the first plug board into the first opening or pull the first plug board out of the first opening; The second plug plate is slidably mounted on the front side of the connecting pipe mounting seat, and the second driving member is arranged on the front side of the supporting frame; the driving end of the second driving member is connected to the second plug plate, and is used to insert the second plug plate into the second opening or pull the second plug plate out of the second opening; The upper end of the connecting pipe is communicated with the material inlet, and the lower end of the connecting pipe is communicated with the external collecting pipeline.

4. The oblique-mouth spiral unloading buffer tank according to claim 2 is characterized in that: The feeding mechanism further comprises a first air flow aid, and an air outlet end of the first air flow aid is communicated with an air inlet hood.

5. The oblique-mouth spiral unloading buffer tank according to claim 1 is characterized in that: The collecting chamber is provided with a V-shaped guide plate between the feeding ends of the two discharge channels; the V-shaped guide plate is used to guide the materials to the two discharge channels.

6. The oblique-mouth spiral unloading buffer tank according to claim 1 is characterized in that: The unloading unit further comprises a second air flow aid, and an air outlet end of the second air flow aid is connected to the bottom of the collecting chamber.

7. The oblique-mouth spiral unloading buffer tank according to claim 1 is characterized in that: The stirring and conveying structure includes an auger driving member, a first spiral stirring member, a connecting seat, and a second spiral stirring member; The auger driving member is installed at the top of the slope of the collecting chamber, and the driving end of the auger driving member passes through the collecting chamber and is transmission-connected with one end of the first spiral stirring member; the connecting seat is arranged in the discharge channel, and the other end of the first spiral stirring member passes through the connecting seat and is connected with the second spiral stirring member; the spiral direction of the first spiral stirring member and the second spiral stirring member is toward one end of the discharge port.

8. The oblique-mouth spiral unloading buffer tank according to claim 1 is characterized in that: The unloading unit further comprises a discharging assembly, wherein the discharging assembly comprises a discharging bracket, a material blocking driving member and a material blocking plate; The discharging bracket is mounted on the outside of the discharging port, the material blocking driving component is arranged on the top of the discharging bracket, and the driving end of the material blocking driving component passes through the discharging bracket and is connected to the material blocking plate, and the size of the material blocking plate is adapted to the discharging port; the material blocking driving component and the material blocking plate are used to control the opening or closing of the discharging port.

9. The oblique-mouth spiral unloading buffer tank according to claim 8, characterized in that: The discharging assembly also includes a discharging guide plate, which is sleeved on the outer periphery of the discharging port and the discharging bracket, and the bottom of the discharging guide plate is provided with a discharging port.

10. A negative pressure unloading system, characterized in that: The negative pressure unloading system uses the oblique-mouth spiral unloading buffer tank as described in any one of claims 1 to 9.

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