CN113003017A - Material bin, concrete material system and material arch breaking method - Google Patents
Material bin, concrete material system and material arch breaking method Download PDFInfo
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- CN113003017A CN113003017A CN202110361178.9A CN202110361178A CN113003017A CN 113003017 A CN113003017 A CN 113003017A CN 202110361178 A CN202110361178 A CN 202110361178A CN 113003017 A CN113003017 A CN 113003017A
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- rotating shaft
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- bin body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
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Abstract
The invention discloses a material bin, a concrete material system and a material arch breaking method, and belongs to the technical field of material storage, wherein the material bin comprises a material bin body and an arch breaking mechanism arranged on the material bin body, the arch breaking mechanism comprises a rotating shaft and a driving device, and the driving device is used for driving the rotating shaft to rotate around the axis of the rotating shaft; the rotating shaft is a hollow shaft and also comprises an air outlet hole communicated with the inner space of the rotating shaft; the venthole is located the material storehouse body, and the exit end of venthole is towards the inner wall of material storehouse body, and the venthole can rotate along with the pivot. The raw material system is based on the material bin, and the arch breaking method can be an arch breaking method of the material bin. By adopting the technical scheme, the arching phenomenon in the material bin can be more effectively eliminated under the condition of simple structural design of the material bin.
Description
Technical Field
The invention relates to the technical field of material storage, in particular to a material bin, a concrete material system and a material arch breaking method.
Background
The material storehouse is the equipment that current production trade and material storage trade were used commonly, is different from the open space material storage of tradition, adopts the material storehouse to deposit the material, has that area is little, be convenient for material storage environmental management, can effectively avoid characteristics such as raise dust environmental pollution.
In the concrete production trade, because the required raw materials of concrete production are more, aggregate storehouse, powder jar, the main mixing machine of traditional concrete mixing plant are the setting on the ground, and the aggregate transports to the mixer through the belt after transporting to the material loading mouth through the forklift, and the powder is carried to the main mixing machine from the powder jar through screw feeder, and finished product concrete carries out the blanking formula through the main mixing machine discharge opening and unloads to the tank car. With the development of the industry, an immersion type mixing plant, namely an underground concrete mixing plant, appears in the prior art, and as the technical scheme provided by the application number of CN201720098658.X, the traditional ground plant station is arranged underground, so that the problems of equipment cost, danger coefficient, dust emission, noise and the like can be effectively solved. Meanwhile, the raw materials for producing the concrete are converted into bin storage from the traditional ground to the other side.
When the material bin is in use, the normal use of the material bin is seriously influenced by the arching phenomenon: resulting in inefficient release of the contents. Aiming at the problem, various arch breaking technical schemes appear in the prior art, and the two common modes are vibration motor arch breaking and pneumatic impact arch breaking.
The storage of powder and fine aggregate is widely applied to the industries of grain processing, building material production and the like besides the concrete production industry.
The structural design of the material bin is further optimized, the problem of arch formation in material release in the material bin is well solved, and the material bin has positive promoting significance to multiple industries undoubtedly.
Disclosure of Invention
Aiming at the technical problems that the structural design of the material bin is further optimized, the arching problem existing in material release in the material bin is well solved, and the arching method has positive promoting significance to multiple industries undoubtedly, the invention provides the material bin, a concrete material system and the material arching method. By adopting the technical scheme, the arching phenomenon in the material bin can be more effectively eliminated under the condition of simple structural design of the material bin.
Aiming at the problems, the material bin, the concrete material system and the material arch breaking method provided by the invention solve the problems through the following technical key points: a material bin comprises a material bin body and an arch breaking mechanism arranged on the material bin body, wherein the arch breaking mechanism comprises a rotating shaft and a driving and rotating device, and the driving and rotating device is used for driving the rotating shaft to rotate around the axis of the rotating shaft;
the rotating shaft is a hollow shaft and also comprises an air outlet hole communicated with the inner space of the rotating shaft;
the venthole is located the material storehouse body, and the exit end of venthole is towards the inner wall of material storehouse body, and the venthole can rotate along with the pivot.
In the prior art, in the feeding process of a conventional storage container, an arch is very easily formed in the positive direction of a feeding hole, and after the arch is formed, the material release of the feeding hole is interrupted, so that the normal production and processing are seriously influenced.
In order to solve the problems, the prior art realizes the arch relieving in modes of manual knocking, vibration applied by a vibration motor, vibration generated by the operation of an air cannon and/or direct action on materials, direct action of a stirring mechanism on the position of the arch, a surface modification method and the like by the air cannon arranged on a storage container. However, surface modification is generally used for arch prevention and is not suitable for arch prevention of all materials.
However, taking the concrete production industry as an example, the concrete such as sand, mineral powder and the like has the characteristics of high density, high humidity, rough surface and high surface free energy; meanwhile, the surface is rough and the relative sliding resistance is large; along with the dilatation of current enterprise's scale, the volume in ore deposit powder storehouse, sand silo is also constantly increasing: the storage capacity of such a common storage chamber can reach more than 2000T, and the height of the storage chamber is increasing continuously to reduce the floor area, and the height of the storage chamber is about 10m (the diameter is 8-10 m). Meanwhile, considering the manufacturing cost of the corresponding bin bodies and the capability of being reused in different places, the bin bodies are also mostly arranged into a plate and section splicing type structure. If the traditional vibration arch breaking mode is adopted, the vibration energy required to be input is larger, the energy consumption is higher and the requirement on power source equipment is high in order to achieve the vibration effect due to the storage volume, density and the like; under the condition of not considering vibration input cost and consumption, because reasons such as storage volume, density, great energy input is great to the influence of storehouse body structural strength itself, higher to the requirement of storehouse body structural strength itself, higher to the reliability requirement of the restraint of the storehouse body itself, even the big vibration energy input for the storehouse body goes on can cause the storehouse body to collapse etc. there is great potential safety hazard. Therefore, the existing blasting type vibration mode, air cannon arch breaking mode and mechanical vibration arch breaking mode are not suitable for the development of the industry of concrete production stations.
The arch breaking mode is characterized in that an arch breaking mode is aimed at that air flow directly acts on materials, if an air cannon is installed at a fixed position on the outer wall of a bin body, the existing common material stacking layer is high in thickness (the height of a storage space in the corresponding bin body in the concrete industry can reach more than 10m), high in material density and high in humidity (when the moisture content of coal ash powder reaches about 20%, the binding force between the coal ash powder and the bin body and between the coal ash powder and the coal ash powder is large), and after the discharging process is interrupted due to arching, the compaction degree in the material stacking layer is large, the arch breaking mode that the air flow directly acts on the materials is adopted, the acting force of the air flow on the local positions of the materials can further cause the materials to be further compacted.
Aiming at the problems, the scheme provides a technical scheme for realizing arch breaking based on the following conception: the method is characterized in that gas is used as power, a continuous gas injection action area is formed in the material in a rotary gas injection mode, and the gas injection action area is used as a breaking surface of a compaction layer in the material to realize arch breaking of the material. In the specific technical scheme, the material bin is provided with a rotating shaft which is a hollow shaft, the rotating shaft can rotate around the axis of the rotating shaft under the action of a driving device, the rotating shaft is provided with an air outlet which is connected with the inner space of the rotating shaft, the outlet end of the air outlet faces to the side wall of the material bin body, the air outlet can rotate along with the rotating shaft, therefore, if air is fed into the inner space of the rotating shaft through a rotary joint, the air outlet is used as an exhaust hole of the inner space, the action area of the exhaust hole is linear along the air flow direction in a specific time, in the process that the air outlet rotates along with the rotating shaft, the air discharged from the air outlet can form a continuous air injection action area, the air injection action area is expanded to the surface from the line, the air injection action area can finally form a breaking surface in the material, when the breaking surface reaches a, and (3) the materials on the lower side and/or the materials on the upper side of the breaking surface collapse, and finally the materials are interlocked to be integrally collapsed, so that the purposes of arching and arch breaking are achieved.
So this scheme of adoption can effectively avoid the broken circumstances of encircleing effect unsatisfactory, further compaction material that leads to because material type, material nature, material layer are too thick that present pneumatic injection broken way exists. Simultaneously, a single air outlet hole can cover a circle of rotation range, and under the condition that the action area is considered, the scheme also has the characteristics of simple structure and low setting cost.
As the technicians in the field, the air outlet holes can be directly through holes arranged on the side wall of the rotating shaft; the branch pipe can be communicated with the inner space of the rotating shaft from any position of the rotating shaft through the corresponding branch pipe, and finally the branch pipe and the rotating shaft synchronously rotate to form a jet hole facing the outer side of the rotating shaft, such as the exhaust pipe drainage scheme provided below.
Meanwhile, in consideration of the problem of the air outlet flow, the aperture of the air outlet is suitably set to be larger, in order to avoid the influence of the material falling into the rotating shaft on air injection, a scheme that a through hole is directly arranged on the side wall of the rotating shaft is adopted for the air outlet, in consideration of the problems of processing difficulty and the like, the air outlet is preferably a straight hole, and the orifice of the outer end of the air outlet is inclined downwards; aiming at the exhaust pipe drainage scheme provided below, because the exhaust pipe can be longer than the wall thickness of the rotating shaft, the exhaust pipe is arranged straightly, the free end of the exhaust pipe inclines downwards, and the bent section is arranged on the exhaust pipe, so that the materials can be better prevented from entering the rotating shaft.
As a further technical solution of the material bin:
as one kind in structural design, inject to prevent to a certain extent through the shape to the material storehouse body and encircle the position, consider common material storehouse body exit position and concrete knot simultaneously, be convenient for realize dividing the section and lieing in the regional technical scheme in material storehouse body central authorities as far as possible, set up to: the material bin body is a columnar bin body, the upper side of which is provided with a cylindrical bin body section, and the lower side of which is provided with a conical bin body section; the large end of the conical bin body section is connected with the lower end of the cylindrical bin body section; the rotating shaft is coaxial with the material bin body. Preferably, in order to further optimize the effect of the shape design of the material bin body on the anti-arching, the conical bin body section adopts a multi-curve conical body.
Considering that the design height of the existing material bin is continuously increased, an outlet is generally positioned at the lower end, and arching generally occurs at the lower end of the material bin, in order to reduce the energy consumption of the driving device during working, the length of the rotating shaft is shortened as much as possible, so that the phenomenon that the rotating shaft is bent due to uneven lateral force, the constraint difficulty of the rotating shaft is reduced, and the rotating shaft is damaged due to overlarge acting force on the rotating shaft and the material in the rotating process is avoided. The driving device is damaged and is set as follows: the material bin body is a vertical container with an outlet end arranged at the lower end; pivot and drive commentaries on classics device and all install in the inside of material storehouse body: the driving device is arranged at the position of the outlet end, and the rotating shaft is arranged on the upper side of the driving device.
For if the not serious condition of compaction condition, for the realization under the circumstances that the realization is allowed at the vibrations power for this scheme can realize breaking the arch under the effect of shock dynamo that can quick response, sets up to: the arch breaking mechanism further comprises a plurality of vibration motors arranged on the material bin body. When the pneumatic arch breaking device is used specifically, the pneumatic arch breaking of the air outlet hole can be combined with the work of the vibration motor. So as to realize high-efficiency and reliable arch breaking under the action of the sectioning surface.
For making can form a plurality of sections on the direction of height on material layer to improve broken efficiency of encircleing and reduce the power input of encircleing, set up to: the number of the air outlet holes is multiple; and a plurality of air outlet holes are arranged at intervals along the axial direction of the rotating shaft. Aiming at the material types and the storage conditions in the existing concrete production industry, the interval between two adjacent air outlets is preferably set to be 1-2m along the axial direction of the rotating shaft.
As an usable blast pipe forms the shearing stirring effect, and can prevent the material to get into the pivot, according to concrete knot hunch condition, nimble adjustment shearing stirring effect regional scope and the regional scope of jet-propelled effect, and under the unnecessary condition, shorten through the blast pipe, reduce the blast pipe to the influence of unloading and to the power loss who drives the commentaries on classics device, set up to: the exhaust pipe is connected with the rotating shaft at one end, the inner space of the exhaust pipe is communicated with the inner space of the rotating shaft, and a pipe orifice at the other end of the exhaust pipe is used as the outlet end; the length of the exhaust pipe is adjustable.
As an accessible control pivot rotational speed, through control air input size, realize the linear regulation of blast pipe length to reach under the prerequisite of realizing adjusting the purpose, simplify material storehouse inner structure design, make things convenient for this material storehouse technical scheme of the resistance of unloading, set up to: the exhaust pipe is of a multi-section series connection structure: is formed by connecting a plurality of straight pipe sections in series in sequence; two straight pipe sections which are arbitrarily matched are in a splicing matching relationship; any two matched straight pipe sections can slide relatively along the axial direction of the straight pipe sections; a return spring is arranged between any two matched straight pipe sections and can elastically deform in the axial direction of the straight pipe sections; the return spring is stretched when the length of the exhaust pipe is increased, and the return spring is used as a power source for automatically shortening the length of the exhaust pipe. When the scheme is specifically applied, for example, through the rotation speed adjustment of the rotating shaft, different centrifugal forces are generated on the outer straight pipe section, and finally the return spring has different elongation lengths, so that the purpose of adjusting the length of the exhaust pipe is achieved; in a similar way, the purpose of adjusting the length of the exhaust pipe is achieved by controlling the gas injection amount of the rotating shaft and utilizing the gas pressure acting on the end part of the outer straight pipe section. According to the serial connection type design provided by the scheme, when the axial sealing between two adjacent straight pipe sections is considered, the packing made of polytetrafluoroethylene is preferably adopted for sealing, so that the axial sealing can better adapt to working vibration, and the material has the characteristics of relative wear resistance and low use cost after entering the sliding surface.
In order to push and extrude the materials in local areas when the rotating shaft rotates, so as to destroy the stress environment in the materials and facilitate the realization of arch breaking; utilize the existing part on it simultaneously, under the condition that reduces the requirement for helical blade intensity, realize helical blade resistance to deformation and strengthen, set up to: the spiral blade is fixed on the rotating shaft and extends spirally along the axis of the rotating shaft; the exhaust pipe is fixedly connected or contacted with the suspended part of the helical blade and is used as a deformation-resistant restraining piece of the helical blade. When the exhaust pipe is specifically used, the exhaust pipe can be arranged on any side of the helical blade under the condition of fixed connection, and the exhaust pipe can be arranged on the back side of the pressure surface of the helical blade at the position of the exhaust pipe only in a matching mode that the exhaust pipe is contacted with each other and can only form single-side supporting stress for the helical blade. In consideration of the influence of the exhaust pipe on the discharge resistance, the exhaust pipe is preferably arranged at the position of the exhaust pipe on the side of the pressure surface of the helical blade, namely the helical blade and the exhaust pipe are connected by welding.
The scheme also discloses a concrete raw material system which comprises a raw material bin for storing powder or particle raw materials, wherein the raw material bin is any one of the above material bins. This scheme provides the concrete application of more than one kind material storehouse, and during concrete application, the material storehouse is used for saving like fine aggregate, powder raw materials. However, the material bin is not limited to be used for storing concrete production raw materials, such as flour processing, temporary storage of lime powder in other fields, and the like.
The scheme also discloses a material arch breaking method, which is used for breaking the arch of the stored material, and the method adopts gas as power, forms a continuous air injection action area in the material in a rotary air injection mode, and realizes the arch breaking of the material by using the air injection action area as a breaking surface of a compaction layer in the material. As mentioned above, by adopting the method, the arch breaking of the materials can be reliably and efficiently completed under the condition of simple structure, and the method is not limited to the existing storage mode and the material type: the gas is taken as a power source, so that the arch can not be broken effectively, and the material is compacted further.
The invention has the following beneficial effects:
the technical scheme for realizing arch breaking based on the following conception is provided: the method is characterized in that gas is used as power, a continuous gas injection action area is formed in the material in a rotary gas injection mode, and the gas injection action area is used as a breaking surface of a compaction layer in the material to realize arch breaking of the material. In the specific technical scheme, the material bin is provided with a rotating shaft which is a hollow shaft, the rotating shaft can rotate around the axis of the rotating shaft under the action of a driving device, the rotating shaft is provided with an air outlet which is connected with the inner space of the rotating shaft, the outlet end of the air outlet faces to the side wall of the material bin body, the air outlet can rotate along with the rotating shaft, therefore, if air is fed into the inner space of the rotating shaft through a rotary joint, the air outlet is used as an exhaust hole of the inner space, the action area of the exhaust hole is linear along the air flow direction in a specific time, in the process that the air outlet rotates along with the rotating shaft, the air discharged from the air outlet can form a continuous air injection action area, the air injection action area is expanded to the surface from the line, the air injection action area can finally form a breaking surface in the material, when the breaking surface reaches a, and (3) the materials on the lower side and/or the materials on the upper side of the breaking surface collapse, and finally the materials are interlocked to be integrally collapsed, so that the purposes of arching and arch breaking are achieved.
So this scheme of adoption can effectively avoid the broken circumstances of encircleing effect unsatisfactory, further compaction material that leads to because material type, material nature, material layer are too thick that present pneumatic injection broken way exists. Simultaneously, a single air outlet hole can cover a circle of rotation range, and under the condition that the action area is considered, the scheme also has the characteristics of simple structure and low setting cost.
As the technicians in the field, the air outlet holes can be directly through holes arranged on the side wall of the rotating shaft; the branch pipe can be communicated with the inner space of the rotating shaft from any position of the rotating shaft through the corresponding branch pipe, and finally the branch pipe and the rotating shaft synchronously rotate to form a jet hole facing the outer side of the rotating shaft, such as the exhaust pipe drainage scheme provided below.
Meanwhile, in consideration of the problem of the air outlet flow, the aperture of the air outlet is suitably set to be larger, in order to avoid the influence of the material falling into the rotating shaft on air injection, a scheme that a through hole is directly arranged on the side wall of the rotating shaft is adopted for the air outlet, in consideration of the problems of processing difficulty and the like, the air outlet is preferably a straight hole, and the orifice of the outer end of the air outlet is inclined downwards; aiming at the exhaust pipe drainage scheme provided below, because the exhaust pipe can be longer than the wall thickness of the rotating shaft, the exhaust pipe is arranged straightly, the free end of the exhaust pipe inclines downwards, and the bent section is arranged on the exhaust pipe, so that the materials can be better prevented from entering the rotating shaft.
Drawings
Fig. 1 is a schematic structural view of a specific embodiment of a material bin according to the present invention, in which a rotating shaft is a polished rod;
fig. 2 is a schematic structural view of a specific embodiment of the material bin according to the present invention, in which an exhaust pipe and a helical blade are installed on a rotating shaft;
FIG. 3 is an enlarged view of a portion A shown in FIG. 1;
FIG. 4 is a partial enlarged view of the portion B shown in FIG. 2;
fig. 5 is a sectional view of an exhaust pipe in an embodiment of the material bin according to the present disclosure.
The reference numbers in the drawings are respectively: 1. the material bin comprises a material bin body, 2, a vibration motor, 3, a rotating shaft, 4, an air outlet hole, 5, a driving and rotating device, 6, an exhaust pipe, 7, a helical blade, 8, a straight pipe section, 9 and a return spring.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:
example 1:
as shown in fig. 1 to 5, a material bin comprises a material bin body 1 and an arch breaking mechanism installed on the material bin body 1, wherein the arch breaking mechanism comprises a rotating shaft 3 and a driving device 5, and the driving device 5 is used for driving the rotating shaft 3 to rotate around the axis of the rotating shaft 3;
the rotating shaft 3 is a hollow shaft and also comprises an air outlet 4 communicated with the inner space of the rotating shaft 3;
the air outlet 4 is positioned in the material bin body 1, the outlet end of the air outlet 4 faces the inner wall of the material bin body 1, and the air outlet 4 can rotate along with the rotating shaft 3.
In the prior art, in the feeding process of a conventional storage container, an arch is very easily formed in the positive direction of a feeding hole, and after the arch is formed, the material release of the feeding hole is interrupted, so that the normal production and processing are seriously influenced.
Aiming at the problems, the prior art realizes the knot arch relieving in the modes of manual knocking, vibration applied by the vibration motor 2, vibration generated by the operation of the air cannon and/or direct action on materials, direct action of a stirring mechanism on the knot arch position, a surface modification method and the like by the air cannon arranged on the warehouse-type container. However, surface modification is generally used for arch prevention and is not suitable for arch prevention of all materials.
However, taking the concrete production industry as an example, the concrete such as sand, mineral powder and the like has the characteristics of high density, high humidity, rough surface and high surface free energy; meanwhile, the surface is rough and the relative sliding resistance is large; along with the dilatation of current enterprise's scale, the volume in ore deposit powder storehouse, sand silo is also constantly increasing: the storage capacity of such a common storage chamber can reach more than 2000T, and the height of the storage chamber is increasing continuously to reduce the floor area, and the height of the storage chamber is about 10m (the diameter is 8-10 m). Meanwhile, considering the manufacturing cost of the corresponding bin bodies and the capability of being reused in different places, the bin bodies are also mostly arranged into a plate and section splicing type structure. If the traditional vibration arch breaking mode is adopted, the vibration energy required to be input is larger, the energy consumption is higher and the requirement on power source equipment is high in order to achieve the vibration effect due to the storage volume, density and the like; under the condition of not considering vibration input cost and consumption, because reasons such as storage volume, density, great energy input is great to the influence of storehouse body structural strength itself, higher to the requirement of storehouse body structural strength itself, higher to the reliability requirement of the restraint of the storehouse body itself, even the big vibration energy input for the storehouse body goes on can cause the storehouse body to collapse etc. there is great potential safety hazard. Therefore, the existing blasting type vibration mode, air cannon arch breaking mode and mechanical vibration arch breaking mode are not suitable for the development of the industry of concrete production stations.
The arch breaking mode is characterized in that an arch breaking mode is aimed at that air flow directly acts on materials, if an air cannon is installed at a fixed position on the outer wall of a bin body, the existing common material stacking layer is high in thickness (the height of a storage space in the corresponding bin body in the concrete industry can reach more than 10m), high in material density and high in humidity (when the moisture content of coal ash powder reaches about 20%, the binding force between the coal ash powder and the bin body and between the coal ash powder and the coal ash powder is large), and after the discharging process is interrupted due to arching, the compaction degree in the material stacking layer is large, the arch breaking mode that the air flow directly acts on the materials is adopted, the acting force of the air flow on the local positions of the materials can further cause the materials to be further compacted.
Aiming at the problems, the scheme provides a technical scheme for realizing arch breaking based on the following conception: the method is characterized in that gas is used as power, a continuous gas injection action area is formed in the material in a rotary gas injection mode, and the gas injection action area is used as a breaking surface of a compaction layer in the material to realize arch breaking of the material. In the specific technical scheme, the material bin comprises a rotating shaft 3 which is a hollow shaft, the rotating shaft 3 can rotate around the axis of the rotating shaft 3 under the action of a driving device 5, an air outlet which is connected with the inner space of the rotating shaft 3 is arranged, the outlet end of the air outlet faces the side wall of the material bin body 1, and an air outlet hole 4 can rotate along with the rotating shaft 3, so that if air is fed into the inner space of the rotating shaft 3 through a rotary joint, the air outlet hole 4 is used as an air outlet hole of the inner space, the action area of the air outlet hole is linear along the air flow direction in a specific time, in the process that the air outlet hole 4 rotates along with the rotating shaft 3, the air discharged from the air outlet hole 4 can form a continuous air injection action area, the air injection action area is expanded to a surface from a line, the air injection action area can finally form a breaking surface in the material, when the breaking surface reaches, and (3) the materials on the lower side and/or the materials on the upper side of the breaking surface collapse, and finally the materials are interlocked to be integrally collapsed, so that the purposes of arching and arch breaking are achieved.
So this scheme of adoption can effectively avoid the broken circumstances of encircleing effect unsatisfactory, further compaction material that leads to because material type, material nature, material layer are too thick that present pneumatic injection broken way exists. Simultaneously, a single air outlet 4 can cover a circle of rotation range, and under the condition that the action area is considered, the scheme also has the characteristics of simple structure and low setting cost.
As a person skilled in the art, the above air outlet 4 can be directly a through hole arranged on the side wall of the rotating shaft 3; also can be through corresponding branch pipe, the branch pipe is switched on with 3 inner spaces of pivot by 3 optional positions of pivot, and finally branch pipe and 3 synchronous rotations of pivot form the jet hole towards 3 outsides of pivot, like 6 drainage schemes of blast pipe that propose below.
Meanwhile, in consideration of the problem of the air outlet flow, the aperture of the air outlet 4 is suitably set to be larger, in order to avoid the influence of the air injection caused by the falling of the material into the rotating shaft 3, the scheme that the through hole arranged on the side wall of the rotating shaft 3 is directly adopted for the air outlet 4, in consideration of the problems of processing difficulty and the like, the air outlet 4 is preferably adopted to be a straight hole, and the orifice of the outer end of the air outlet is inclined downwards; aiming at the exhaust pipe 6 drainage scheme provided below, because the exhaust pipe 6 can be longer than the wall thickness of the rotating shaft 3, the exhaust pipe 6 is arranged straightly, the free end of the exhaust pipe inclines downwards, and the exhaust pipe 6 is provided with a bending section, so that the materials can be better prevented from entering the rotating shaft 3.
Example 2:
this example was further optimized on the basis of example 1:
as one kind in structural design, inject to prevent to a certain extent through the shape to material storehouse body 1 and tie and encircle the position, consider common material storehouse body 1 exit position and concrete knot simultaneously, be convenient for realize dividing the section and lieing in the regional technical scheme in material storehouse body 1 central authorities as far as possible, set up to: the material bin body 1 is a columnar bin body, the upper side of which is provided with a cylindrical bin body section, and the lower side of which is provided with a conical bin body section; the large end of the conical bin body section is connected with the lower end of the cylindrical bin body section; the rotating shaft 3 is coaxial with the material bin body 1. Preferably, in order to further optimize the effect of the shape design of the material bin body 1 on the anti-arching, the conical bin body section adopts a multi-curve conical body.
Example 3:
this example was further optimized on the basis of example 1:
considering that the design height of the existing material bin is continuously increased, an outlet is generally positioned at the lower end, and arching generally occurs at the lower end of the material bin, in order to reduce energy consumption of a driving device during working, the length of the rotating shaft 3 is shortened as much as possible, so that the phenomenon that the rotating shaft 3 is bent due to uneven lateral force, the constraint difficulty of the rotating shaft 3 is reduced, and the rotating shaft 3 is damaged due to overlarge acting force of the material in the rotating process is avoided. The driving device 5 is damaged and is set as: the material bin body 1 is a vertical container with an outlet end arranged at the lower end; pivot 3 and drive and change device 5 and all install in the inside of material storehouse body 1: the driving and rotating device 5 is arranged at the position of the outlet end, and the rotating shaft 3 is arranged on the upper side of the driving and rotating device 5.
Example 4:
this example was further optimized on the basis of example 1:
for if the not serious condition of compaction condition, for the realization under the circumstances that the realization is allowed at the vibrations power for this scheme can realize breaking the arch under the effect of shock dynamo that can quick response, sets up to: the arch breaking mechanism further comprises a plurality of vibration motors 2 arranged on the material bin body 1. When in specific use, the pneumatic arch breaking of the air outlet 4 can be combined with the work of the vibration motor. So as to realize high-efficiency and reliable arch breaking under the action of the sectioning surface.
Example 5:
this example was further optimized on the basis of example 1:
for making can form a plurality of sections on the direction of height on material layer to improve broken efficiency of encircleing and reduce the power input of encircleing, set up to: the number of the air outlet holes 4 is multiple; and a plurality of air outlet holes 4 are arranged at intervals along the axial direction of the rotating shaft 3. Aiming at the material types and the storage conditions in the existing concrete production industry, the interval between two adjacent air outlets 4 is preferably set to be 1-2m along the axial direction of the rotating shaft 3.
Example 6:
this example was further optimized on the basis of example 1:
as an usable blast pipe 6 forms the shearing stirring effect, and can prevent the material to get into pivot 3, according to concrete knot hunch condition, nimble adjustment shearing stirring effect regional scope and the regional scope of jet-propelled effect, and under the unnecessary condition, shorten through blast pipe 6, reduce the influence of blast pipe 6 to the unloading and to the power loss of driving device 5, set up to: the device also comprises an exhaust pipe 6, one end of which is connected with the rotating shaft 3, and the inner space of which is communicated with the inner space of the rotating shaft 3, and a pipe orifice at the other end of the exhaust pipe 6 is used as the outlet end; the length of the exhaust pipe 6 is adjustable.
As 3 rotational speeds of accessible control pivot, through control air input size, realize 6 linear regulation of length of blast pipe to reach under the prerequisite that realizes adjusting the purpose, simplify material storehouse inner structure design, make things convenient for this material storehouse technical scheme of the resistance of unloading, set up to: the exhaust pipe 6 is of a multi-section series connection structure: is formed by connecting a plurality of straight pipe sections 8 in series in sequence; the two straight pipe sections 8 which are arbitrarily matched are in a splicing matching relationship; any two matched straight pipe sections 8 can slide relatively along the axial direction of the straight pipe sections 8; a return spring 9 is arranged between any two matched straight pipe sections 8, and the return spring 9 can elastically deform in the axial direction of the straight pipe sections 8; the return spring 9 is stretched when the length of the exhaust pipe 6 increases, and the return spring 9 serves as a power source for automatically shortening the length of the exhaust pipe 6. When the scheme is specifically applied, for example, through the rotation speed adjustment of the rotating shaft 3, different centrifugal forces are generated on the outer straight pipe section 8, and finally the return spring 9 has different elongation lengths, so that the purpose of adjusting the length of the exhaust pipe 6 is achieved; similarly, the length of the exhaust pipe 6 can be adjusted by controlling the gas injection amount of the rotating shaft 3 and utilizing the gas pressure acting on the end part of the outer straight pipe section 8. In view of the serial connection type design provided by the scheme, when the axial sealing between two adjacent straight pipe sections 8 is considered, the packing made of polytetrafluoroethylene is preferably adopted for sealing, so that the axial sealing can better adapt to working vibration, and meanwhile, after the material enters the sliding surface, the sealing structure has the characteristics of relative wear resistance and low use cost.
In order to push and extrude the materials in local areas when the rotating shaft 3 rotates, so as to destroy the stress environment in the materials and facilitate the realization of arch breaking; meanwhile, the existing components are utilized, the deformation resistance of the helical blade 7 is enhanced under the condition of reducing the strength requirement on the helical blade 7, and the method is characterized in that: the spiral blade 7 is fixed on the rotating shaft 3 and extends spirally along the axis of the rotating shaft 3; the exhaust pipe 6 is fixedly connected or contacted with the suspended part of the helical blade 7, and the exhaust pipe 6 is used as a deformation-resistant restraining piece of the helical blade 7. When the exhaust pipe is specifically used, the exhaust pipe 6 can be arranged on any side of the helical blade 7 under the condition of fixed connection, and the exhaust pipe 6 can be arranged on the back side of the pressure-bearing surface of the helical blade 7 at the position of the exhaust pipe in a matching mode that only the helical blade 7 is contacted with each other and can form single-side support stress. In consideration of the influence of the exhaust pipe 6 on the discharge resistance, it is preferable to arrange the exhaust pipe 6 at the position on the side of the pressure receiving surface of the helical blade 7, that is, the helical blade 7 and the exhaust pipe 6 are connected by welding.
Example 7:
this embodiment provides a specific application of embodiment 1:
the embodiment provides a concrete raw material system, which comprises a raw material bin for storing powder or granular raw materials, wherein the raw material bin is the material bin in embodiment 1. This scheme provides the concrete application of more than one kind material storehouse, and during concrete application, the material storehouse is used for saving like fine aggregate, powder raw materials. However, the material bin is not limited to be used for storing concrete production raw materials, such as flour processing, temporary storage of lime powder in other fields, and the like.
Example 8:
this example provides a material arch breaking concept similar to that of example 1:
the implementation provides a material arch breaking method, which is used for breaking an arch of a stored material, and the method adopts gas as power, forms a continuous gas injection action area in the material in a rotary gas injection mode, and realizes the arch breaking of the material by using the gas injection action area as a breaking surface of a compaction layer in the material. As mentioned above, by adopting the method, the arch breaking of the materials can be reliably and efficiently completed under the condition of simple structure, and the method is not limited to the existing storage mode and the material type: the gas is taken as a power source, so that the arch can not be broken effectively, and the material is compacted further.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the gist of the invention are intended to be within the scope of the invention.
Claims (10)
1. A material bin comprises a material bin body (1) and an arch breaking mechanism arranged on the material bin body (1), and is characterized in that the arch breaking mechanism comprises a rotating shaft (3) and a driving and rotating device (5), and the driving and rotating device (5) is used for driving the rotating shaft (3) to rotate around the axis of the rotating shaft (3);
the rotating shaft (3) is a hollow shaft and also comprises an air outlet (4) communicated with the inner space of the rotating shaft (3);
the air outlet hole (4) is located in the material bin body (1), the outlet end of the air outlet hole (4) faces towards the inner wall of the material bin body (1), and the air outlet hole (4) can rotate along with the rotating shaft (3).
2. The material bin according to claim 1, wherein the material bin body (1) is a cylindrical bin body with a cylindrical bin body section on the upper side and a conical bin body section on the lower side; the large end of the conical bin body section is connected with the lower end of the cylindrical bin body section; the rotating shaft (3) is coaxial with the material bin body (1).
3. The material bin according to claim 1, wherein the material bin body (1) is a vertical container with an outlet end arranged at the lower end; pivot (3) and drive commentaries on classics device (5) and all install in the inside of material storehouse body (1): the driving and rotating device (5) is arranged at the position of the outlet end, and the rotating shaft (3) is arranged on the upper side of the driving and rotating device (5).
4. A material bin according to claim 1 wherein the arch breaking mechanism further comprises a plurality of vibration motors (2) mounted on the bin body (1).
5. A bin according to claim 1, wherein the number of said outlet holes (4) is multiple; and a plurality of air outlet holes (4) which are arranged at intervals are arranged along the axial direction of the rotating shaft (3).
6. The material bin according to claim 1, further comprising an exhaust pipe (6) with one end connected with the rotating shaft (3) and an inner space communicated with the inner space of the rotating shaft (3), wherein a pipe orifice at the other end of the exhaust pipe (6) is used as the outlet end; the length of the exhaust pipe (6) is adjustable.
7. A material silo according to claim 6 characterized in that blast pipe (6) is of multi-section tandem construction: is formed by connecting a plurality of straight pipe sections (8) in series in sequence; the two straight pipe sections (8) which are matched arbitrarily are in a splicing matching relationship; any two matched straight pipe sections (8) can slide relatively along the axial direction of the straight pipe sections (8); a return spring (9) is arranged between any two matched straight pipe sections (8), and the return spring (9) can elastically deform in the axial direction of the straight pipe sections (8); the return spring (9) is stretched when the length of the exhaust pipe (6) is increased, and the return spring (9) is used as a power source for automatically shortening the length of the exhaust pipe (6).
8. A material bin according to claim 6 further comprising a helical blade (7) fixed to the shaft (3) and extending helically along the axis of the shaft (3); the exhaust pipe (6) is fixedly connected or contacted with the suspended part of the helical blade (7), and the exhaust pipe (6) is used as a deformation-resistant restraining part of the helical blade (7).
9. Concrete feed system comprising a feed bin for storing powder or granular feed material, characterized in that the feed bin is a feed bin according to any one of claims 1 to 8.
10. A material arch breaking method is used for breaking an arch of a stored material and is characterized in that gas is used as power, a continuous air injection action area is formed in the material in a rotary air injection mode, and the air injection action area is used as a breaking surface of a compaction layer in the material to realize material arch breaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110361178.9A CN113003017A (en) | 2021-04-02 | 2021-04-02 | Material bin, concrete material system and material arch breaking method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110361178.9A CN113003017A (en) | 2021-04-02 | 2021-04-02 | Material bin, concrete material system and material arch breaking method |
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| CN113003017A true CN113003017A (en) | 2021-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013849A (en) * | 2021-11-15 | 2022-02-08 | 华南理工大学 | Arch breaking device |
| CN114534286A (en) * | 2022-03-02 | 2022-05-27 | 湖南晨光新材料科技有限公司 | Automatic feeding device for flash evaporation dryer |
-
2021
- 2021-04-02 CN CN202110361178.9A patent/CN113003017A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114013849A (en) * | 2021-11-15 | 2022-02-08 | 华南理工大学 | Arch breaking device |
| CN114534286A (en) * | 2022-03-02 | 2022-05-27 | 湖南晨光新材料科技有限公司 | Automatic feeding device for flash evaporation dryer |
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