Safe chemical powder conveying device

Abstract

The present application relates to chemical powder conveying technology, disclose a kind of safety type chemical powder closed conveying device, including the temporary storage of powder for powder tank;Further comprising: power pipe, segmentedly equidistantly installed on the feed pipe, power pipe is communicated with feed pipe, power pipe is double-layer cavity type as a whole, power vane shaft is rotatably installed in it, while the inner layer cavity of power pipe is also fixed with elastic sleeve;Pneumatic drive component is arranged in the power pipe, wherein power vane shaft is driven to rotate by pneumatic drive component, changes the deformation and positioning of elastic sleeve, prevents the backflow of powder gravity, while the gap between the double cavity of power pipe is also provided with pressure accumulation chamber at the top. The effective conveying of chemical powder is realized by using the control and adjustment of airflow and air pressure, and in the large-span powder conveying path, the deposition and backflow problem of powder conveying will not occur due to the air pressure regulation and the self-action of powder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical powder conveying, in particular to a safe chemical powder closed conveying device. BACKGROUND

[0002] Chemical powder conveying generally adopts bagged powder conveying or pipeline type powder conveying application, wherein the bagged powder conveying synchronously conveys the packaged powder and its packaging bag components by using a conveying belt, which has high conveying efficiency, but also causes powder leakage in the conveying process. Meanwhile, the bagged powder conveying needs to realize powder packaging, and the bag needs to be disassembled when the powder is applied, which is cumbersome and inefficient. Therefore, the existing chemical powder also adopts a tubular structure driven by airflow to convey the powder, which adjusts and controls the airflow and air pressure to achieve the conveying purpose of the chemical powder. The single powder conveying efficiency depends on the adjustment and control of air pressure and airflow, which has the advantages of continuous and uninterrupted powder conveying and the closed and safe nature of the powder conveying process.

[0003] The existing airflow controlled pipeline type powder conveying has good use effect, but also has limitations and deficiencies in conveying use, such as using airflow driving control to realize powder conveying in the pipeline, the driving power source of the powder completely depends on the airflow, and in the process of long distance and large span powder conveying, especially the continuous conveying of the powder from low to high in the pipeline, due to the influence of atmospheric pressure and other external loads, the powder is prone to stagnation of conveying efficiency due to airflow turbulence in the continuous conveying process, and the powder is prone to local deposition and backflow in the pipeline due to the use limitation of airflow, thereby causing low powder conveying efficiency and easy damping and clogging in the long distance pipeline type powder airflow conveying process, thereby affecting the processing and packaging treatment application of the powder in the subsequent processing process.

[0004] In view of the above problems, the original chemical powder closed conveying device is innovatively designed. SUMMARY

[0005] The present application aims to provide a safe chemical powder closed conveying device to solve the above-mentioned problems of the existing chemical powder closed conveying device, which adopts airflow driving control, and has low powder conveying efficiency and easy damping and clogging in the process of long distance and large span powder conveying.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a safe chemical powder closed conveying device, comprising a material tank for temporary storage of powder, and a material conveying pipe connected and installed at the bottom of the material tank, and a gas flow type master pump for gas flow conveying and regulation is arranged at the connection between the two.

[0007] Further comprising: a power pipe segmentally and equidistantly installed on the conveying pipe, the power pipe being in communication with the conveying pipe, the power pipe being provided with a double-layer cavity, a power blade shaft being rotatably installed in the double-layer cavity, and an elastic sleeve being fixed in the inner cavity of the power pipe; and a gas pressure driving component being installed in the power pipe, wherein the power blade shaft is driven to rotate by the gas pressure driving component to change the deformation and positioning of the elastic sleeve, thereby preventing the powder from flowing back due to gravity, and a pressure storage cavity being provided at the top of the gap between the double-layer cavities of the power pipe, the pressure storage cavity storing the conveying gas flow of the gas pressure driving component, the conveying gas flow being pressurized and discharged through an electrically-controlled valve body embedded on the inner wall of the power pipe, thereby providing the powder in the power pipe with conveying kinetic energy.

[0008] Preferably, the power pipe and the conveying pipe are coaxially and throughly arranged, wherein the whole of the conveying pipe is provided with a deformable bending structure, and the conveying pipe is internally provided with a gas flow introduced by a gas flow type total pump.

[0009] Preferably, the power blade shaft is located in the outer cavity of the double-layer cavity component of the power pipe, wherein the power blade shaft is arranged in a "Y" shape and is equidistantly and uniformly distributed along the vertical central axis of the power pipe, and the end of the power blade shaft is provided with a roller.

[0010] Preferably, the elastic sleeve is provided in a cylindrical structure, the upper and lower cylinder ends of the elastic sleeve are fixed to the inner wall of the inner cavity of the power pipe, and the inner wall of the elastic sleeve is further provided with elastic folds.

[0011] Preferably, the outer wall of the elastic sleeve and the inner wall of the power pipe corresponding to the same projection plane are equidistantly and uniformly provided with magnets, and the magnets on the power pipe and the elastic sleeve at the corresponding positions are magnetically arranged in the same manner.

[0012] Preferably, the gas pressure driving component comprises an external gas valve port fixed to the outer wall of the bottom of the power pipe, the external gas valve port being used for external connection of a gas pressurized conveying pipeline, and the gas pressure driving component further comprises a gas pipeline in the power pipe for gas flow guiding, wherein the power blade shaft and the middle segment of the gas pipeline are in a relative rotation structure connected by a rotating shaft, and an impeller is fixed to the outside of the rotating shaft located in the gas pipeline.

[0013] Preferably, the pressure storage cavities are partitioned in the power pipe, the interiors of adjacent pressure storage cavities are isolated from each other, and the pressure storage cavities are throughly connected to the upper end of the gas pipeline; and the pressure storage cavities are throughly connected to the powder conveying space in the power pipe by the electrically-controlled valve body.

[0014] Preferably, the top of the pressure storage cavity is further throughly connected to an elastic bag, the elastic bag is controlled to be deformed and compressed by an electromagnetic lifting assembly fixedly installed on the outer wall of the power pipe, and the electromagnetic lifting assembly controls the gas in the pressure storage cavity to flow into the electrically-controlled valve body.

[0015] Preferably, the inside powder conveying space of the power pipe is also coaxially fixed with an active elastic bag, the active elastic bag is in a cylindrical structure, and the internal cavity of the active elastic bag is in communication with the gas port of the electric control valve body.

[0016] Compared with the prior art, the safe chemical powder closed conveying device has the advantages that the effective conveying of the chemical powder is realized by controlling and adjusting the airflow and the air pressure, and the problems of deposition and backflow of the powder during the conveying of the powder in a large-span conveying path are avoided due to the air pressure regulation and the self action of the powder.

[0017] 1. By the segmented assembly and splicing of the power pipe, the airflow and the air pressure in the power pipe are utilized to provide auxiliary power for the conveying of the chemical powder in the pipe, the air pressure accumulation of the airflow in the pressure accumulation cavity is utilized, the air is quickly introduced into the powder conveying space in the power pipe under the joint action of the air pressure accumulation and the electromagnetic lifting assembly, the impact of the air is realized, and the powder is quickly conveyed when the powder is locally deposited in the power pipe, so that the stable conveying of the powder is realized.

[0018] Further, the flow of the airflow can also make the power vane shaft rotate and be limited, so that the elastic bag sleeve is adjusted and controlled under the rotation and limitation of the power vane shaft, the elastic bag sleeve is reciprocally adjusted, the blocked powder in the pipe is dredged, and the powder is limited to prevent the gravity backflow of the powder during the conveying of the powder from bottom to top in a large span, and the conveying stability is affected.

[0019] 2. The active elastic bag is additionally arranged, the gas pressurized in the pressure accumulation cavity and conveyed to the powder conveying space in the power pipe is changed in position, the gas is only introduced into the active elastic bag, the active elastic bag is deformed and pressurized from bottom to top by the pushing of the airflow, the powder is pushed and conveyed in the active elastic bag under the extrusion and peristalsis, the original airflow in the conveying pipe is matched, and the auxiliary closed conveying effect of the powder is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front structure schematic view of the present application;

[0021] Figure 2 It is a side structure schematic view of the present application;

[0022] Figure 3 It is a front structure schematic view of the power pipe in the first embodiment of the present application;

[0023] Figure 4 It is a side structure schematic view of the power pipe in the first embodiment of the present application;

[0024] Figure 5The distribution state of the pressure storage cavity of the application is shown in the schematic diagram.

[0025] Figure 6 The external front structure of the power pipe is shown in the schematic diagram.

[0026] Figure 7 The external bottom view of the power pipe is shown in the schematic diagram.

[0027] Figure 8 The elastic bag sleeve structure is shown in the schematic diagram.

[0028] Figure 9 The gas pipeline and external gas valve port mounting structure is shown in the schematic diagram.

[0029] Figure 10 The internal structure of the power pipe in the second embodiment of the application is shown in the schematic diagram.

[0030] In the figure: 1, material tank; 2, material conveying pipe; 3, gas flow type master pump; 4, power pipe; 401, external gas valve port; 402, gas pipeline; 403, impeller; 5, power vane shaft; 6, elastic bag sleeve; 601, magnet; 7, pressure storage cavity; 8, electric control valve body; 801, elastic bag; 802, electromagnetic lifting assembly; 9, movable elastic bag. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0032] Embodiment one: please refer to Figures 1-9The application provides a technical scheme: a safe chemical powder closed conveying device, which comprises a powder tank 1 used for temporarily storing powder, a conveying pipe 2 communicated and installed at a bottom discharge valve of the powder tank 1, and an airflow type general pump 3 arranged at a connecting position of the powder tank 1 and the conveying pipe 2 and used for airflow conveying and regulation. A crawling ladder is arranged outside the powder tank 1, so that personnel can conveniently perform maintenance work. A tank cover is arranged at the top of the powder tank 1 and can be opened and closed in a hinged mode. The tank cover can block and seal the powder in the powder tank 1, so that the powder is prevented from overflowing during conveying. An opening used for feeding control is arranged on the powder tank 1, and monitoring elements used for monitoring the pressure, temperature and humidity in the powder tank 1 are arranged on the powder tank 1, so that the safety of the powder sealed conveying of the powder tank 1 is improved. A stirring structure can be installed in the powder tank 1 in a matched mode. The chemical powder stored in the powder tank 1 can be gathered at the position of the discharge valve at the bottom of the powder tank 1 under the action of external force, so that the powder can be conveniently conveyed and the powder is prevented from gathering at a local position in the powder tank 1 and being blocked due to the damping action between the powders. The power pipe 4 and the conveying pipe 2 are coaxially and throughly arranged. The conveying pipe 2 can be deformed and bent as a whole. The conveying pipe 2 has airflow introduced by the airflow type general pump 3. In the technical scheme, the power pipe 4 is connected through the conveying pipe 2. The power pipe 4 arranged in a segmented and sectionalized mode can output auxiliary power at different positions of the powder conveying pipeline, so that the powder conveying effect is improved.

[0033] The main creative point of the technical scheme further comprises the power pipe 4 which is installed on the conveying pipe 2 in a segmented and equidistant mode, the power pipe 4 is communicated with the conveying pipe 2, the power pipe 4 is arranged in a double-layer cavity mode as a whole, a power blade shaft 5 is throughly and rotatably installed in the power pipe 4, and an elastic sleeve 6 is fixed in the inner cavity of the power pipe 4. The air pressure driving member is arranged in the power pipe 4. The power blade shaft 5 is driven to rotate by the air pressure driving member, so that the deformation and positioning of the elastic sleeve 6 are changed, the powder gravity backflow is prevented, a pressure accumulation cavity 7 is arranged at the top of the gap between the double cavities of the power pipe 4, the pressure accumulation cavity 7 accumulates the conveying airflow of the air pressure driving member, the air pressure driving member is pressurized and discharged through the electric control valve 8 embeddedly installed on the inner wall of the power pipe 4, and the conveying kinetic energy of the powder in the power pipe 4 is provided.

[0034] The use of the above scheme is as follows: the gas pressure driving member is connected with the gas pressurizing assembly, so that the gas can be externally adjusted and controlled, and the gas provides power for the rotation of the power blade shaft 5 during internal transmission, so that the power blade shaft 5 can push the elastic sleeve 6 inwardly during rotation, so that the elastic sleeve 6 is extruded to reduce the interval through which the chemical powder passes. In the process of large-span powder conveying, due to insufficient power or downward powder conveying, the powder backflow descends, which affects the powder conveying efficiency. At the same time, the rotation of the power blade shaft 5 and the deformation and resetting of the elastic sleeve 6 can also push the powder deposited in the pipeline by external force to prevent the powder from causing blockage.

[0035] In the above scheme, the following technical scheme is adopted: the power blade shaft 5 is located in the outer chamber of the double-layer cavity member of the power pipe 4, wherein the power blade shaft 5 is arranged in the shape of “Y” and is uniformly distributed along the vertical central axis of the power pipe 4 at equal intervals, and the end of the power blade shaft 5 is provided with a roller; the elastic sleeve 6 is arranged in a cylindrical structure, and the upper and lower cylinder ends are fixed to the inner wall of the inner cavity of the power pipe 4, and the inner wall of the elastic sleeve 6 is further provided with elastic wrinkles; the outer wall of the elastic sleeve 6 is uniformly distributed with magnets 601 at equal intervals on the inner wall of the power pipe 4 at the same projection plane, and the corresponding positions of the power pipe 4 and the elastic sleeve 6 are magnetically arranged in the same way. The elastic sleeve 6 and the power blade shaft 5 act on each other, so that the power blade shaft 5 can control the movement and limiting of the elastic sleeve 6 under the action of rotation and self-limiting, realize the effect of blocking powder backflow and assisting powder blockage dredging, and the magnets 601 are made of soft magnetic sheets, which are arranged to facilitate the resetting of the elastic sleeve 6 under the action of elasticity, so that the elastic sleeve 6 can stably maintain the space for internal powder conveying after completion of expansion without being pushed by the power blade shaft 5.

[0036] In the technical scheme, the gas pressure driving component comprises an external gas valve port 401 fixed on the bottom outer wall of the power pipe 4, the external gas valve port 401 is used for external connection of a gas pressurized conveying pipeline, and the gas pressure driving component further comprises a gas pipeline 402 in the power pipe 4 for gas flow guiding, wherein the power blade shaft 5 and the middle section of the gas pipeline 402 are in a relative rotation structure of shaft connection, and the outer shaft of the power blade shaft 5 located in the gas pipeline 402 is fixed with an impeller 403; the pressure storage cavities 7 are arranged in a partitioned manner in the power pipe 4, the interiors of adjacent pressure storage cavities 7 are isolated from each other, and the pressure storage cavities 7 are penetrated by the upper end of the gas pipeline 402; meanwhile, the pressure storage cavities 7 are penetrated by the electric control valve body 8 and the powder conveying space in the power pipe 4; the pressure storage cavities 7 provided with the matched gas pressure driving component are connected with the gas flow guiding, the gas flow drives the power blade shaft 5 to rotate through the impeller 403, and the gas flow continuously guides the pressure storage in the pressure storage cavities 7, so that the gas pressure in the pressure storage cavities 7 is increased, wherein the thickness of the inner wall of the pressure storage cavities 7 is increased to prevent damage caused by high pressure, when the gas pressure in the pressure storage cavities 7 reaches an extreme value, the gas is discharged through the opened electric control valve body 8, the gas forms a high pressure impact and is guided into the powder conveying space in the power pipe 4, so that the powder is impacted and the blocked pipeline can be dredged, and the rapid impact of the gas pressure can also assist the powder in the power pipe 4 to move forward and be stably conveyed.

[0037] Further, in the scheme, the top of the pressure storage cavity 7 is also provided with a corresponding penetration type elastic bag 801, the elastic bag 801 is controlled to deform and compress by the electromagnetic lifting assembly 802 fixedly installed on the outer wall of the power pipe 4, and the electromagnetic lifting assembly 802 controls the gas in the pressure storage cavity 7 to flow through the electric control valve body 8; through the elastic bag 801, the gas amount of the gas pressure storage can be increased, and when the gas is discharged through the electric control valve body 8, the synchronous use of the electromagnetic lifting assembly 802 can guide the gas into the power pipe 4 more quickly, more comprehensively and more stably, so as to impact and convey the powder.

[0038] Embodiment two: based on the embodiment one, another structure for assisting in pushing and impacting the powder is designed, and the specific content is as follows:

[0039] The pressure storage cavities 7 are arranged in a partitioned manner in the power pipe 4, the interiors of adjacent pressure storage cavities 7 are isolated from each other, and the pressure storage cavities 7 are penetrated by the upper end of the gas pipeline 402; meanwhile, the pressure storage cavities 7 are penetrated by the electric control valve body 8 and the powder conveying space in the power pipe 4; the power pipe 4 further coaxially fixes an active elastic bag 9 in the powder conveying space, the active elastic bag 9 is arranged in a cylindrical structure, and the cavity in the active elastic bag 9 is penetrated by the gas port of the electric control valve body 8;

[0040] In the scheme, the gas is delivered from the pressure storage cavity 7 to the inside of the power pipe 4 by the electric control valve 8, and the gas is only introduced into the movable elastic bag 9. Due to the gas pressure, the movable elastic bag 9 expands and deforms, so that the movable elastic bag 9 expands as a whole. Since the elasticity of the bottom of the movable elastic bag 9 is less than that of the upper part, the bottom expands first when it expands, and then the upper part expands from bottom to top, so that the movable elastic bag 9 realizes the downward and upward pushing and conveying of the powder in the pipeline during the expansion. At the same time, due to the isolation of the movable elastic bag 9, the gas only flows back and forth in the movable elastic bag 9 and the pressure storage cavity 7 under the action of the electric control valve 8, and the gas cannot impact into the power pipe 4 to directly contact with the powder. The powder in the power pipe 4 has the driving energy originally driven by the gas flow, and the powder in the power pipe 4 also cannot directly contact with the electric control valve 8, so that the powder cannot enter the electric control valve 8.

[0041] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A safe closed conveying device for chemical powder, comprising a material tank (1) for temporary storage of powder, and a conveying pipe (2) connected to the discharge valve at the bottom of the material tank (1), and an airflow main pump (3) for airflow conveying and control is provided at the connection between the two. Its features are, Also includes: The power pipe (4) is installed on the conveying pipe (2) in segments at equal intervals. The power pipe (4) is connected to the conveying pipe (2). The power pipe (4) is set in a double-layer cavity as a whole. A power blade shaft (5) is installed through and rotated inside it. At the same time, an elastic sleeve (6) is fixed in the inner cavity of the power pipe (4). The power blade shaft (5) is located in the outer chamber of the double-layer cavity component of the power pipe (4). The power blade shaft (5) is arranged in a "Y" shape and is evenly distributed at equal intervals along the vertical central axis of the power pipe (4). At the same time, rollers are provided at the end of the power blade shaft (5). A pneumatic drive component is installed inside the power pipe (4). The power blade shaft (5) is driven by the pneumatic drive component to rotate and change the deformation and positioning of the elastic sleeve (6) to prevent the powder from flowing back due to gravity. At the same time, a pressure accumulator (7) is provided at the top of the gap between the two cavities of the power pipe (4). The pressure accumulator (7) stores the conveying airflow of the pneumatic drive component and discharges it under pressure through the electrically controlled valve body (8) embedded in the inner wall of the power pipe (4), providing conveying kinetic energy for the powder inside the power pipe (4). The pneumatic drive component includes an external air valve port (401) fixed to the outer wall of the bottom of the power pipe (4). The external air valve port (401) is used for... The external gas pressurization and conveying pipeline also includes a gas pipeline (402) for gas guidance inside the power pipe fitting (4), wherein the power blade shaft (5) and the middle section of the gas pipeline (402) are a relative rotating structure connected by a rotating shaft, and an impeller (403) is fixed outside the rotating shaft inside the gas pipeline (402); the pressure accumulator (7) is set in a partitioned manner inside the power pipe fitting (4), and the adjacent pressure accumulators (7) are isolated from each other, and the pressure accumulator (7) is connected to the upper end of the gas pipeline (402); at the same time, the pressure accumulator (7) is connected to the powder conveying space inside the power pipe fitting (4) through the electric control valve body (8).

2. The safe closed conveying device for chemical powder according to claim 1, characterized in that: The power pipe (4) and the material conveying pipe (2) are coaxially connected. The material conveying pipe (2) is deformable and bendable as a whole. At the same time, the material conveying pipe (2) has airflow introduced by the airflow type master pump (3).

3. The safe closed conveying device for chemical powder according to claim 1, characterized in that: The elastic sleeve (6) is cylindrical in shape, with its upper and lower ends fixed to the inner wall of the power pipe (4). The inner wall of the elastic sleeve (6) is also provided with elastic folds.

4. The safe closed conveying device for chemical powder according to claim 3, characterized in that: On the outer wall of the elastic sleeve (6) and the inner wall of the power pipe (4) which are located on the same projection plane, magnets (601) are evenly distributed at equal intervals. The magnets (601) on the power pipe (4) and the elastic sleeve (6) at the corresponding positions have the same magnetic properties.

5. A safe, enclosed conveying device for chemical powders according to claim 1, characterized in that: The top of the accumulator (7) is also connected to an elastic bladder (801) in a through-type manner. An electromagnetic lifting assembly (802) is fixedly installed on the outer wall of the power pipe (4). The electromagnetic lifting assembly (802) controls the deformation and compression of the elastic bladder (801). The electromagnetic lifting assembly (802) controls the gas inside the accumulator (7) to flow into the electronically controlled valve body (8).

6. The safe closed conveying device for chemical powder according to claim 1, characterized in that: The internal powder conveying space of the power pipe (4) is also coaxially fixed with a movable elastic bladder (9). The movable elastic bladder (9) is cylindrical in shape and the internal cavity of the movable elastic bladder (9) is connected to the air port of the electric control valve body (8).

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