CN215401013U - High-potential-difference chute buffering device - Google Patents

Abstract

The utility model provides a height position difference elephant trunk buffer, includes upper chamber (2) and lower chamber (7), and the upper chamber lateral wall is opened has the feed through mouth, and lower chamber (7) are connected with above-mentioned feed through mouth, leads to and is equipped with between the feed through mouth bottommost and upper chamber (2) bottom and fills the buffer zone, and characterized in that, lower chamber (7) axis and upper chamber (2) axis acutangulate, and lower chamber (7) cross-sectional area is greater than upper chamber (2) cross-sectional area. The blanking device divides a section of blanking with higher potential difference into two sections of blanking with lower potential difference, reduces the impact force of subsequent materials, and prolongs the service life of the device; the increase of the buffering material section does not influence the material flow and the conveying efficiency, and the secondary buffering effect greatly reduces the equipment maintenance cost and reduces the field dust and noise pollution.

Description

High-potential-difference chute buffering device

Technical Field

The utility model belongs to the field of buffering devices, and particularly relates to a buffering device for a high-position chute.

Background

The chute has wide application in the process of transporting and transferring coal, soda ash, grain and other powder materials, and the powder materials are conveyed through the chute to realize the loading, unloading or storing purposes. Because the unique flow characteristic of powder material, in its transportation process, in order to avoid the emergence of putty phenomenon, require that the pipeline is installed perpendicularly as far as possible, nevertheless have big discrepancy of elevation operating mode often among the actual industrial process, when causing the powder material to pass through the elephant trunk and carry, can produce great impact force in blanking department, cause equipment wearing and tearing and dust and noise pollution to influence the life and the staff occupational health of equipment, cause economic loss.

Disclosure of Invention

The utility model aims to provide a buffering device which is continuously operated, can effectively relieve the impact force of powder materials in a chute due to high-level fall, prolongs the service life of equipment and optimizes the working environment of a factory.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a high potential difference elephant trunk buffer, through flange joint in high potential difference elephant trunk middle part position, buffer includes upper chamber and lower chamber, and the top of upper chamber is equipped with the last flange that links to each other with the elephant trunk material section, and the material mouth has been seted up to the upper chamber lateral wall, and the lower chamber is connected with the material mouth that leads to of upper chamber lateral wall, lead to the material mouth the lower extreme with leave between the upper chamber bottom and fill the buffer zone, its characterized in that, the axis of lower chamber and upper chamber becomes the acute angle to the cross-sectional area of lower chamber is greater than the cross-sectional area of upper chamber.

Furthermore, an acute angle formed by the lower chamber and the axis of the upper chamber is smaller than a complementary angle of a material sliding angle, namely the complementary angle of the material sliding angle is 90 degrees to the material sliding angle, so that good flowability of the material is guaranteed. The sliding angle is the minimum slope angle when the material starts to slide, namely the minimum included angle between the axis of the lower chamber and the horizontal plane when the material slides in the lower chamber. The acute angle formed by the lower chamber and the axis of the upper chamber is preferably half of the complementary angle of the sliding angle of the materials. The cross-sectional area of the lower chamber is 1.2 times or more the cross-sectional area of the upper chamber. Furthermore, a buffer substance is arranged in the filling buffer area, and the buffer substance can be polystyrene foam, or polyethylene foam, or polyurethane foam. The bottom of the buffer substance is provided with a pressure sensor.

Furthermore, the middle part of the lower chamber is provided with an electric gate valve which is electrically connected with the pressure sensor and can receive a pressure signal transmitted by the pressure sensor to change the opening degree of the lower chamber.

Furthermore, the top of the filling buffer area is provided with a movable inclined plate which is preferably connected to the side wall of the upper chamber by a hinge, and one end of the inclined plate is a free end.

The bottom of the upper chamber is provided with a detachable baffle plate, and the bottom of the lower chamber is provided with a lower flange connected with the discharge section of the chute.

Compared with the prior art, the high-potential-difference chute buffer device has the following advantages:

according to the high-potential-difference chute buffering device, the filling buffering area is arranged at the bottom of the upper chamber of the device, so that the initial impact force of falling materials can be reduced, a certain amount of buffering material sections are always kept in the chute by controlling the opening of the flashboard valve through the pressure sensor, one section of high-potential-difference blanking is divided into two sections of lower-potential-difference blanking, the impact force of subsequent materials is reduced, and the service life of equipment is prolonged; the increase of the buffering material section does not influence the material flow and the conveying efficiency, and the secondary buffering effect greatly reduces the equipment maintenance cost and reduces the field dust and noise pollution.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural view of a high-head chute buffering device according to an embodiment of the present invention;

fig. 2 is an exploded view of the operation cycle of the high-head chute buffer according to the embodiment of the utility model.

The notation in the figure is: 1. the device comprises an upper flange, 2, an upper chamber, 3, a hinge, 4, an inclined plate, 5, a buffer substance, 6, a pressure sensor, 7, a lower chamber, 8, an electric gate valve, 9 and a lower flange.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the utility model. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the utility model, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model will be described in detail with reference to the following embodiments with reference to the attached drawings.

As shown in figure 1, the top end of the upper chamber 2 is fixedly connected with an upper flange 1 connected with a feeding chute, the cylinder bottom plate of the upper chamber 2 is a sloping plate 4 connected with the outer wall of the device through a hinge 3, and the other end of the sloping plate 4 is a free end. An included angle between the axis of the upper chamber 2 and the axis of the lower chamber 7 is 45 degrees, a feed opening communicated with the lower chamber 7 is formed in the side wall of the upper chamber 2, the cross section area of the lower chamber is 1.2 times of that of the upper chamber, the electric gate valve 8 is connected to the wall body of the lower chamber 7 through a flange, and the electric gate valve 8 can selectively seal the material flow in the lower chamber 7; a filling buffer area is reserved between the lowest end of the material passing port and the bottom of the upper chamber 2, a buffer substance 5 is filled in the filling buffer area, the buffer substance 5 is polystyrene foam, a pressure sensor 6 is arranged at the bottom of the filling buffer area, the pressure sensor 6 can receive pressure generated by the gravity of materials in the upper chamber 2, the pressure sensor 6 transmits a pressure signal to a driving device of the electric gate valve 8, and the driving device adjusts the opening degree of the electric gate valve 8 according to the pressure signal; a lower flange 9 connected with the discharging chute is fixed at the bottom end part of the lower chamber 7.

One operating cycle of the high head chute buffer is shown in figure 2:

in the initial stage (a), the electric gate valve 8 is in a closed state, materials come from a material inlet chute connected with the upper flange 1 and fall onto an inclined plate 4 with one hinged end and one free end, material accumulation with a certain height is formed in the upper chamber, and a buffer area below the inclined plate is filled with buffer substances 5. The combination of the inclined plate 4 with one free end and the buffer substance 5 has two main functions, firstly, the free end of the inclined plate generates weak displacement under the impact force of falling materials to release pressure to the buffer substance to play a buffer role, secondly, the structure of the free end of the inclined plate can well transmit the pressure of the materials in the upper chamber 2 to the pressure sensor 6 through the buffer substance 5, and the pressure sensor 6 starts to work after receiving a pressure signal;

in the critical state (b), a critical pressure value can be calculated according to material physical properties and a required buffer height H (the buffer height is the distance between the top surface of the material in the upper chamber and the lowest edge of the material through hole) before the high-potential-difference slide pipe buffer device is used, the critical pressure value is set to the pressure sensor 6, when the material height in the upper chamber 2 reaches the buffer height H, the pressure sensor sends a signal to enable a driving device of the electric slide valve 8 to work, the opening of the initial electric slide valve 8 is set to be 1/2 of the cross section area of the lower chamber, and the area of the material through hole serving as the oblique cross section area of the lower chamber 7 is also inevitably larger than the cross section area of the upper chamber 2 due to the fact that the cross section area of the lower chamber 7 is larger than the cross section area of the upper chamber 2, and the maximum material supply amount of the slide pipe is ensured to be within the operation range of the electric slide valve;

the critical pressure value is approximately equal to the gravity of the material acting on the buffer material under the buffer height H, namely the critical pressure P is equal to rho Vg, wherein rho is the bulk density of the material, V is the volume of the material acting on the buffer material (which can be calculated according to the cross section area of the upper chamber of the chute and the buffer height H), and g is the gravity acceleration;

in the operation state (c), after the electric gate valve 8 is opened, the material flows into the discharging chute through the lower chamber 7, when the material flow of the material passing hole is larger than the material flow of the chute, the height of the material in the upper chamber 2 is reduced, at the moment, the pressure sensor receives a pressure value smaller than a critical value, the pressure sensor sends a signal to control the driving device of the electric gate valve 8 to reduce the opening of the electric gate valve 8, and vice versa, the opening degree of the electric gate valve 8 is adjusted (the limit opening degree of the operation state is one fifth to all of the cross section area of the lower chamber) to control the material flow of the material passing hole to be consistent with the material flow of the chute, so that a buffer material section with the height of H dynamic balance is maintained in the upper chamber 2, and the material fall is shortened;

and (d) in the ending state, when the incoming material chute finishes the incoming material, the height of the material in the upper chamber 2 is smaller than the buffer height H, the opening of the electric gate valve 8 is gradually reduced to the operation limit opening (the cross section area of the lower chamber 1/5) and then stops closing, after all the residual materials in the upper chamber 2 are completely discharged, the pressure sensor 6 receives a zero-pressure signal, and the electric gate valve 8 driving device is controlled to enable the electric gate valve 8 to be recovered to the closing state, so that the next incoming material is waited to enter a new operation period.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the utility model, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims (9)

1. The utility model provides a height position difference elephant trunk buffer, includes upper chamber (2) and lower chamber (7), and the upper chamber lateral wall is opened has the feed through mouth, and lower chamber (7) are connected with above-mentioned feed through mouth, leads to and is equipped with between the feed through mouth bottommost and upper chamber (2) bottom and fills the buffer zone, and characterized in that, lower chamber (7) axis and upper chamber (2) axis acutangulate, and lower chamber (7) cross-sectional area is greater than upper chamber (2) cross-sectional area.

2. A high head chute damping device according to claim 1 characterised in that the acute angle between the axis of the lower chamber (7) and the axis of the upper chamber (2) is less than the complement of the sliding angle of the material.

3. A high head chute damping device according to claim 2 characterised in that the acute angle between the axis of the lower chamber (7) and the axis of the upper chamber (2) is one half of the complement of the sliding angle of the material.

4. A high head chute damping device according to claim 1, characterised in that the buffer substance (5) is provided in the filling buffer zone.

5. A high head chute damping device according to claim 4, characterised in that the damping substance (5) is: polystyrene foam, or polyethylene foam, or polyurethane foam.

6. A high head chute damping device according to claim 4, characterised in that the bottom of the damping material (5) is provided with a pressure sensor (6) for receiving pressure from the weight of the material in the upper chamber (2).

7. The high-potential-difference chute buffering device as claimed in claim 6, wherein an electric gate valve (8) is arranged in the middle of the lower chamber (7), the electric gate valve (8) is electrically connected with the pressure sensor (6) and can receive a pressure signal transmitted by the pressure sensor (6) to change the opening degree of the electric gate valve (8).

8. A high head chute damping device according to any one of claims 1 to 7, characterised in that a movable ramp (4) is provided at the top of the filling and damping zone.

9. A high head chute damping device according to claim 8, characterised in that the ramp (4) is hinged at one end to the side wall of the upper chamber (2) by means of a hinge (3).

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