Safe closed conveying device for chemical powder

Abstract

The invention relates to a chemical powder conveying technology, and discloses a safe chemical powder closed conveying device which comprises a material tank used for temporarily storing powder. The power pipe fittings are installed on the material conveying pipe at equal intervals in a sectional mode, the power pipe fittings are communicated with the material conveying pipe, the power pipe fittings are integrally arranged in a double-layer cavity mode, power blade shafts are rotatably installed in the power pipe fittings in a penetrating mode, and meanwhile elastic bag sleeves are further fixed in inner layer cavities of the power pipe fittings; the pneumatic driving component is arranged in the power pipe fitting, the power blade shaft is driven by the pneumatic driving component to rotate so as to change deformation and positioning of the elastic bag sleeve, powder is prevented from flowing back due to gravity, and meanwhile, a pressure storage cavity is further formed in the top of a gap between the double cavities of the power pipe fitting. By means of control and adjustment of air flow and air pressure, effective conveying of chemical powder is achieved, and meanwhile in a large-span powder conveying path, the problems of deposition and backflow of powder conveying due to air pressure adjustment and control and the action of the powder are solved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical powder conveying, in particular to a safe closed chemical powder conveying device. Background Art

[0002] Chemical powder conveying generally adopts bagged powder conveying or pipeline powder conveying application. Among them, bagged powder conveying uses a conveyor belt to synchronously convey the packaged powder and its packaging bag components. Its conveying efficiency is high, but it also leads to powder leakage during the conveying process. At the same time, bagged powder conveying requires the powder to be packaged, and the bag must be disassembled when the powder is used. The operation is cumbersome and inefficient. Therefore, existing chemical powders are also conveyed by airflow-driven tubular structures, which use the adjustment and control of airflow pressure to achieve the purpose of chemical powder conveying through the driving effect of airflow and air pressure. The efficiency of single powder conveying depends on the adjustment and control of air pressure and airflow. It has the characteristics of continuous and uninterrupted powder conveying, as well as airtightness and safety during powder conveying.

[0003] The existing airflow-controlled pipeline powder conveying has good use effects, but it also has limitations and shortcomings in its use. For example, the use of airflow drive control to realize the transportation of powder in the pipeline, the driving power source of the powder depends entirely on the action of the airflow. When conveying powder over long distances and large spans, especially the continuous transportation of powder from low to high in the pipeline, due to the influence of external loads such as atmospheric pressure, the powder is prone to stagnation of conveying efficiency due to the turbulence of the airflow during the continuous transportation process. The powder is prone to local deposition inside the pipeline due to the limitations of the airflow, as well as backflow of the powder transportation. As a result, during the long-distance pipeline powder airflow transportation process, the powder conveying and discharging efficiency is low and it is easy to be damped and blocked, thereby affecting the processing and packaging of the powder in the subsequent processing process.

[0004] In response to the above problems, an innovative design was carried out based on the original chemical powder closed conveying device. Summary of the Invention

[0005] The purpose of the present invention is to provide a safe closed conveying device for chemical powders to solve the problems of the existing closed conveying device for chemical powders proposed in the above background technology, which adopts airflow drive control, and has low powder conveying and discharging efficiency and is prone to damping and clogging when conveying powders over long distances and large spans.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a safe closed conveying device for chemical powder, comprising a material tank for temporary storage of powder, and a conveying pipe connected to the discharge valve at the bottom of the material tank, and an air flow master pump for air flow conveying and regulation is provided at the connection between the two; It also includes: a power pipe, which is installed on the conveying pipe in sections and at equal intervals. The power pipe is connected to the conveying pipe. The power pipe is arranged in a double-cavity manner as a whole, and a power blade shaft is installed therein for rotation. At the same time, an elastic bag sleeve is fixed in the inner cavity of the power pipe; an air pressure driving component is arranged in the power pipe, wherein the power blade shaft is driven by the air pressure driving component to rotate and change the deformation and positioning of the elastic bag sleeve to prevent the gravity backflow of the powder. At the same time, a pressure storage chamber is provided at the top of the gap between the two cavities of the power pipe. The pressure storage chamber stores the conveying airflow of the air pressure driving component, and is pressurized and discharged through an electrically controlled valve body embedded in the inner wall of the power pipe, thereby providing conveying kinetic energy for the powder inside the power pipe.

[0007] Preferably, the power pipe and the material delivery pipe are coaxially connected, wherein the material delivery pipe can be deformed and bent as a whole, and there is airflow introduced by the airflow master pump inside the material delivery pipe.

[0008] Preferably, the power blade shaft is located in the outer chamber of the double-layer cavity component of the power pipe, wherein the power blade shaft is arranged in a "Y" shape and is evenly distributed along the vertical center axis of the power pipe, and rollers are provided at the ends of the power blade shaft.

[0009] Preferably, the elastic bag sleeve is provided in a cylindrical structure, the upper and lower ends of the elastic bag sleeve are evenly fixed to the inner wall of the inner cavity of the power pipe, and the inner wall of the elastic bag sleeve is also provided with elastic folds.

[0010] Preferably, magnets are evenly distributed on the outer wall of the elastic bag and the inner wall of the power tube corresponding to the elastic bag on the same projection plane at equal intervals, and the magnets on the power tube and the elastic bag at corresponding positions have the same magnetic configuration.

[0011] Preferably, the pneumatic drive component includes an external air valve port fixed on the outer wall of the bottom of the power pipe, and the external air valve port is used for an external gas pressurized delivery pipeline. It also includes a gas pipeline inside the power pipe for gas diversion, wherein the power impeller shaft and the middle section of the gas pipeline are relatively rotating structures connected by a rotating shaft, and the power impeller shaft is located inside the gas pipeline and an impeller is fixed on the outside of the rotating shaft.

[0012] Preferably, the pressure storage chamber is arranged in a separate manner inside the power pipe, adjacent pressure storage chambers are isolated from each other, and the pressure storage chamber is connected to the upper end of the gas pipeline; at the same time, the pressure storage chamber is connected to the powder conveying space inside the power pipe through the electric control valve body.

[0013] Preferably, the top of the pressure storage chamber is also connected to an elastic bag in a through-type manner. The elastic bag is fixedly installed with an electromagnetic lifting component on the outer wall of the power pipe to control deformation and compression. The electromagnetic lifting component controls the internal gas of the pressure storage chamber to flow into the electric control valve body.

[0014] Preferably, a movable elastic bag is coaxially fixed in the internal powder conveying space of the power pipe. The movable elastic bag is arranged in a cylindrical structure, and the internal cavity of the movable elastic bag is connected to the air port of the electric control valve body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the safe chemical powder enclosed conveying device utilizes the control and regulation of airflow and air pressure to achieve effective conveying of chemical powder. At the same time, in a large-span powder conveying path, the problem of powder deposition and backflow due to air pressure regulation and the action of the powder itself will not occur. The specific contents are as follows: 1. Through the segmented assembly and splicing of power pipes, the airflow and air pressure inside the power pipes are regulated to provide auxiliary power for the chemical powder conveying inside the pipeline. It utilizes the pressure accumulation effect of the airflow inside the pressure accumulation chamber, and the combined effect of the gas pressure accumulation and electromagnetic lifting components to quickly introduce the gas into the powder conveying space inside the power pipes, and perform the gas impact effect, so that the powder can be quickly conveyed when local deposition occurs inside, achieving stable material conveying; Furthermore, the flow of air can also cause the power blade shaft to rotate and limit, so that the power blade shaft can be adjusted and controlled by the elastic bag sleeve under the rotation and limiting action. The reciprocating adjustment of the elastic bag sleeve can clear the powder blocked in the pipeline, and at the same time it can also limit the powder to prevent the powder from gravity reflux during the large-span bottom-up powder transportation process, thereby affecting the transportation stability.

[0016] 2. An auxiliary movable elastic bag is provided. The gas pressurized in the pressure accumulator chamber and delivered to the powder conveying space inside the power pipe changes the position reached by the gas delivery so that the gas is only introduced into the movable elastic bag. The movable elastic bag is pushed by the airflow to deform and pressurize from bottom to top. Under the action of extrusion and peristalsis, the powder is pushed and conveyed inside the movable elastic bag. The original airflow in the feeding pipe is used to achieve a closed conveying effect assisted by the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 It is a side structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal front structure of the power pipe in Example 1 of the present invention; Figure 4 This is a schematic diagram of the internal side structure of the power pipe in Example 1 of the present invention; Figure 5 This is a schematic diagram of the distribution state of the pressure accumulator chambers of the present invention; Figure 6 This is a schematic diagram of the external front structure of the power pipe of the present invention; Figure 7 This is a schematic bottom view of the exterior of the power pipe of the present invention; Figure 8 This is a schematic diagram of the elastic cuff structure of the present invention; Figure 9 This is a schematic diagram of the installation structure of the gas pipeline and the external gas valve port of the present invention; Figure 10 Schematic diagram of the internal structure of the power pipe in the second embodiment of the present invention.

[0018] In the figure: 1. Material tank; 2. Material delivery pipe; 3. Air flow master pump; 4. Power pipe; 401. External air valve port; 402. Gas pipeline; 403. Impeller; 5. Power impeller shaft; 6. Elastic bag; 601. Magnet; 7. Pressure storage chamber; 8. Electric control valve body; 801. Elastic bag; 802. Electromagnetic lifting assembly; 9. Movable elastic bag. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-9The present invention provides a technical solution: a safe chemical powder sealed conveying device, comprising a material tank 1 for temporary storage of powder, and a conveying pipe 2 connected and installed at the discharge valve at the bottom of the material tank 1, and an air flow master pump 3 for air flow conveying and regulation is provided at the connection between the two; a ladder is provided on the outside of the material tank 1 to facilitate maintenance work for personnel, and a cover body is provided on the top of the material tank 1 that is opened and closed in a hinged manner, and the tank cover can isolate and seal the powder inside the material tank 1 to prevent the powder from overflowing during the conveying process, and an opening for feed control and a monitoring element for monitoring the internal pressure, temperature and humidity of the material tank 1 are provided on the material tank 1, thereby improving the safety of the material tank 1 for sealed powder conveying, and at the same time, the material tank 1 can also be equipped with a stirring structure. By continuously driving the stirring structure, the chemical powder stored in the material tank 1 can be gathered to the discharge valve position at the bottom of the material tank 1 under the action of external force, which is convenient for the transportation of the powder and avoids the powder from gathering at a local position inside the material tank 1, which causes congestion due to the damping effect between the powders; the power pipe 4 and the feed pipe 2 are coaxially connected, wherein the feed pipe 2 is deformable and bendable as a whole, and at the same time, the feed pipe 2 has an airflow introduced by the airflow master pump 3; at the same time, in the present technical solution, the power pipe 4 is connected through the feed pipe 2, and the power pipe 4 arranged at intervals can perform auxiliary power output at different positions of the powder conveying pipeline, thereby improving the powder conveying effect.

[0021] The main innovations of the present technical solution also include: a power pipe 4, which is installed on the feed pipe 2 in sections and at equal intervals, the power pipe 4 is connected to the feed pipe 2, and the power pipe 4 is arranged as a double-cavity as a whole, in which a power blade shaft 5 is rotatably installed, and an elastic bag sleeve 6 is also fixed in the inner cavity of the power pipe 4; an air pressure driving component is arranged in the power pipe 4, wherein the power blade shaft 5 is driven by the air pressure driving component to rotate and change the deformation and positioning of the elastic bag sleeve 6 to prevent the gravity backflow of the powder, and at the same time, a pressure storage chamber 7 is also provided at the top of the gap between the two cavities of the power pipe 4, and the pressure storage chamber 7 stores the conveying airflow of the air pressure driving component, and is pressurized and discharged through the electric control valve body 8 embedded in the inner wall of the power pipe 4, thereby providing conveying kinetic energy for the powder inside the power pipe 4; The above-mentioned scheme is used as follows: a pneumatic driving component is connected to an external gas pressurizing component, so that the gas can be externally regulated and controlled by the air pressure, so that the gas can provide rotational power for the power blade shaft 5 during transportation inside the pneumatic driving component, so that the power blade shaft 5 can use external force to push the elastic bag sleeve 6 to deform inward during rotation, so that the elastic bag sleeve 6 is squeezed to reduce the interval through which the chemical powder passes. In the transportation of powder with a large span, due to insufficient power or the powder being transported from bottom to top, the powder flows back and falls, affecting the powder transportation efficiency. At the same time, the rotation of the power blade shaft 5 and the deformation and resetting of the elastic bag sleeve 6 can also push the powder deposited in the pipeline with external force to prevent the powder from causing blockage.

[0022] 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 component of the power pipe 4, wherein the power blade shaft 5 is arranged in a "Y" shape and is evenly distributed along the vertical center axis of the power pipe 4. At the same time, a roller is provided at the end of the power blade shaft 5; the elastic bag sleeve 6 is arranged in a cylindrical structure, and its upper and lower cylinder ends are evenly fixed to the inner wall of the inner cavity of the power pipe 4, and the inner wall of the elastic bag sleeve 6 is also provided with elastic folds; the outer wall of the elastic bag sleeve 6 is evenly distributed with magnets 601 on the inner wall of the power pipe 4 corresponding to the same projection plane. The magnets 601 on the power pipe 4 and the elastic bag sleeve 6 at the corresponding positions have the same magnetic settings; the elastic bag sleeve 6 and the power blade shaft 5 of this function enable the power blade shaft 5 to control the movement and limitation of the elastic bag sleeve 6 under the action of rotation and self-limiting, thereby achieving the effect of blocking powder backflow and assisting in clearing powder blockages, and the magnet 601 adopts a soft magnetic sheet, which is configured to facilitate the resetting of the elastic bag sleeve 6 under the elastic action, so that the elastic bag sleeve 6 can stably maintain the space for powder transportation inside it after the expansion is completed and is not pushed by the power blade shaft 5.

[0023] In the above technical solution, the pneumatic drive component includes an external air valve port 401 fixed on the outer wall of the bottom of the power pipe 4, and the external air valve port 401 is used for external gas pressurized delivery pipeline, which also includes a gas pipeline 402 for gas diversion in the power pipe 4, wherein the power blade shaft 5 and the middle section of the gas pipeline 402 are relatively rotating structures connected by a rotating shaft, and the power blade shaft 5 is located inside the gas pipeline 402, and an impeller 403 is fixed on the outside of the rotating shaft; the pressure storage chamber 7 is separated and arranged inside the power pipe 4, and the adjacent pressure storage chambers 7 are isolated from each other, and the pressure storage chamber 7 is connected with the upper end of the gas pipeline 402; at the same time, the pressure storage chamber 7 is connected with the powder conveying space inside the power pipe 4 through the electric control valve body 8; it is provided The pressure storage chamber 7 of the matching pneumatic drive component, when the external air valve port 401 is connected to the gas introduction, the air flow passes through the impeller 403 to rotate the power impeller shaft 5, and at the same time the air flow is continuously introduced into the pressure storage chamber 7 to accumulate pressure, so that the air pressure inside the pressure storage chamber 7 increases, wherein the thickness of the inner wall of the pressure storage chamber 7 is increased to prevent damage caused by high pressure. When the air pressure inside the pressure storage chamber 7 reaches the extreme value, the gas is discharged through the opened electric control valve body 8, and the gas forms a high-pressure impact and is introduced into the powder conveying space inside the power pipe 4, so that the powder is impacted and can clear the blocked pipeline. At the same time, the rapid impact of air pressure can also assist the powder driven by the air flow inside the power pipe 4 to move forward, and assist in the stable conveying of the powder.

[0024] Furthermore, in the above scheme, an elastic bag 801 is provided at the top of the pressure storage chamber 7 and is connected in a through-type manner. The elastic bag 801 is controlled by an electromagnetic lifting component 802 fixedly installed on the outer wall of the power pipe 4 to control deformation and compression. The electromagnetic lifting component 802 controls the internal gas of the pressure storage chamber 7 to be introduced into the electric control valve body 8 for circulation; by setting the elastic bag 801, the amount of gas stored can be increased. At the same time, when the gas is discharged through the electric control valve body 8, the synchronous use of the electromagnetic lifting component 802 can more quickly, comprehensively and stably introduce the gas into the interior of the power pipe 4 to impact and transport the powder.

[0025] Example 2: Based on Example 1, this example is different from Example 1 in that another structure for auxiliary pushing and impacting of powder is designed. The specific contents are as follows: The pressure accumulator chambers 7 are arranged in a compartmentalized manner within the power pipe 4. Adjacent pressure accumulator chambers 7 are isolated from each other and communicate with the upper end of the gas pipeline 402. Furthermore, the pressure accumulator chambers 7 communicate with the powder conveying space within the power pipe 4 via the electrically controlled valve body 8. A movable elastic bladder 9 is coaxially fixed within the powder conveying space within the power pipe 4. The movable elastic bladder 9 has a cylindrical structure, and the internal cavity of the movable elastic bladder 9 communicates with the gas port of the electrically controlled valve body 8. In this scheme, gas is transported from the pressure accumulation chamber 7 to the inside of the power pipe 4 through the electric control valve body 8, and the gas is only introduced into the movable elastic bag 9, where due to the action of air pressure, the movable elastic bag 9 expands and deforms, causing the movable elastic bag 9 to expand as a whole. Since the elasticity of the bottom of the movable elastic bag 9 is less than the elasticity of its upper part, the bottom expands first during expansion, and then the upper part expands from the bottom to the top, so that the movable elastic bag 9 can realize the push and transport of the powder in the pipeline from the bottom to the top during the expansion process. At the same time, due to the isolation of the movable elastic bag 9, the gas only circulates back and forth in the movable elastic bag 9 and the pressure accumulation chamber 7 under the action of the electric control valve body 8. The gas will not impact the power pipe 4 and directly contact the powder. The powder in the power pipe 4 has the driving kinetic energy originally driven by the airflow. Similarly, the powder in the power pipe 4 will not directly contact the electric control valve body 8, causing the powder to enter the electric control valve body 8.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safe closed conveying device for chemical powders, comprising a material tank (1) for temporary storage of powders, and a conveying pipe (2) connected to a discharge valve at the bottom of the material tank (1), and an air flow master pump (3) for air flow conveying and regulation is provided at the connection between the two; It is characterized by: Also includes: The power pipe (4) is installed on the material delivery pipe (2) in sections at equal intervals. The power pipe (4) is connected to the material delivery pipe (2). The power pipe (4) is arranged as a double-layer cavity. A power blade shaft (5) is installed in a rotating manner through the power pipe (4). An elastic bag sleeve (6) is also fixed in the inner cavity of the power pipe (4). The pneumatic drive component is arranged in the power pipe (4), wherein the power blade shaft (5) is driven by the pneumatic drive component to rotate and change the deformation and positioning of the elastic bag sleeve (6), thereby preventing the powder from flowing back due to gravity. At the same time, a pressure storage chamber (7) is provided at the top of the gap between the two cavities of the power pipe (4). The pressure storage chamber (7) stores the conveying airflow of the pneumatic drive component and discharges it under pressure through the electric control valve body (8) embedded in the inner wall of the power pipe (4), thereby providing conveying kinetic energy for the powder inside the power pipe (4).

2. A safe chemical powder closed conveying device according to claim 1, characterized in that: The power pipe (4) and the material delivery pipe (2) are coaxially connected, wherein the material delivery pipe (2) is configured to be deformable and bendable as a whole, and the material delivery pipe (2) has an airflow introduced by the airflow master pump (3) inside.

3. A safe closed conveying device for chemical powder according to claim 1 or 2, characterized in that: The power blade shaft (5) is located in the outer chamber of the double-layer cavity component of the power pipe (4), wherein the power blade shaft (5) is arranged in a "Y" shape and is evenly distributed at equal intervals along the vertical center axis of the power pipe (4), and a roller is provided at the end of the power blade shaft (5).

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

5. A safe closed conveying device for chemical powder according to claim 4, characterized in that: Magnets (601) are evenly distributed on the outer wall of the elastic bag sleeve (6) and the inner wall of the power pipe (4) corresponding to the elastic bag sleeve (6) on the same projection plane, with equal spacing. The magnets (601) on the power pipe (4) and the elastic bag sleeve (6) at corresponding positions have the same magnetic configuration.

6. A safe closed conveying device for chemical powder according to claim 1, characterized in that: The pneumatic drive component comprises an external air valve port (401) fixed on the outer wall of the bottom of the power pipe (4), the external air valve port (401) being used for connecting to an external gas pressurized delivery pipeline, and further comprising a gas pipeline (402) for gas diversion within the power pipe (4), wherein the power blade shaft (5) and the middle section of the gas pipeline (402) are relatively rotating structures connected to a rotating shaft, and an impeller (403) is fixed to the outside of the rotating shaft of the power blade shaft (5) located inside the gas pipeline (402).

7. A safe closed conveying device for chemical powder according to claim 6, characterized in that: The pressure accumulator chamber (7) is arranged in a partitioned manner inside the power pipe (4), the interiors of adjacent pressure accumulator chambers (7) are isolated from each other, and the pressure accumulator chamber (7) is connected to the upper end of the gas pipeline (402); at the same time, the pressure accumulator chamber (7) is connected to the powder conveying space inside the power pipe (4) through the electric control valve body (8).

8. A safe closed conveying device for chemical powder according to claim 7, characterized in that: The top of the pressure storage chamber (7) is also connected in a corresponding through-type manner to an elastic bag (801), and the elastic bag (801) is controlled by an electromagnetic lifting component (802) fixedly installed on the outer wall of the power pipe (4) to control deformation and compression. The electromagnetic lifting component (802) controls the internal gas of the pressure storage chamber (7) to be introduced into the electric control valve body (8) for circulation.

9. The safe closed conveying device for chemical powder according to claim 7, characterized in that: A movable elastic bag (9) is coaxially fixed in the internal powder conveying space of the power pipe (4). The movable elastic bag (9) is arranged in a cylindrical structure, and the internal cavity of the movable elastic bag (9) is connected to the air port of the electric control valve body (8).

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