Powder conveying device and production device

Abstract

The embodiment of the utility model discloses a powder conveying device and a production device. The powder conveying device comprises a powder storage tank, a compressed air storage tank, a pneumatic acceleration chamber and a conveying pipeline, the pneumatic acceleration chamber is provided with an acceleration chamber body, and an air inlet, a feed port and a discharge port which are communicated with the acceleration chamber body, the air inlet is used for communicating with a compressed air storage tank, and the feed port is used for communicating with a powder storage tank; one end of the conveying pipeline is used for communicating with the discharge port, and the other end of the conveying pipeline is used for communicating with production equipment, so that the conveying pipeline is used for conveying the powder in the pneumatic acceleration chamber into the production equipment. By arranging the compressed gas storage tank and the pneumatic acceleration chamber, the power for conveying the powder can be improved, the air pressure in the conveying pipeline can be increased, high-speed gas can destroy powder agglomerates and carry out physical destructive dispersion on powder agglomerates, and the conveying efficiency can also be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic conveying technical field especially relates to powder conveying device and production device. BACKGROUND

[0002] When conveying powder by using pneumatic conveying system, the powder as production raw material has the characteristics of large specific gravity, strong viscosity and easy caking, which makes the powder easily remain in the conveying pipeline, which further affects the addition ratio of the powder in the final product, and thus the product quality may be unqualified. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a powder conveying device, which increases the pneumatic force of the powder conveying device by setting a compressed gas storage tank, thereby reducing the residue of the powder in the conveying pipeline.

[0004] The utility model discloses further provide a production device.

[0005] The embodiment provides a powder conveying device, which comprises a powder storage tank, a compressed air storage tank, a pneumatic acceleration chamber and a conveying pipeline; the pneumatic acceleration chamber has an acceleration chamber body and an air inlet, a feed inlet and a discharge outlet communicated with the acceleration chamber body, the air inlet is used for communicating the compressed gas storage tank, and the feed inlet is used for communicating the powder storage tank; one end of the conveying pipeline is used for communicating the discharge outlet, and the other end of the conveying pipeline is used for communicating a production equipment, so that the conveying pipeline is used for conveying the powder in the pneumatic acceleration chamber into the production equipment.

[0006] In some embodiments, the powder conveying device further comprises a pulse air supply valve arranged between the compressed gas storage tank and the pneumatic acceleration chamber, and the pulse air supply valve is used for controlling the conveying flow and air supply pressure of the gas in the compressed gas storage tank to the pneumatic acceleration chamber.

[0007] In some embodiments, the powder conveying device further comprises an air pressure sensor and a control device, the control device is communicatively connected with the air pressure sensor to receive the electrical signal of the air pressure sensor; the air pressure sensor is used for detecting the air pressure in the production equipment; and the control device is electrically connected with the pulse air supply valve and is used for adjusting the pneumatic pulse valve parameters of the pulse air supply valve.

[0008] In some embodiments, the control device is configured to adjust the pneumatic pulse valve parameters of the pulse air supply valve to adjust the conveying flow and air supply pressure of the gas in the compressed gas storage tank to the pneumatic acceleration chamber when the air pressure detected by the air pressure sensor is greater than a preset threshold value.

[0009] In some embodiments, the capacity of the compressed gas storage tank is 0.9 m³ to 1.1 m³.

[0010] In some embodiments, the powder conveying device further includes a gantry and a first weighing device, the first weighing device being fixed on the gantry; a plurality of spaced-apart support lugs are fixedly connected to the outer wall of the powder storage tank, and the powder storage tank is mounted on the first weighing device via the support lugs; the first weighing device is used to weigh the powder storage tank before and after conveying powder.

[0011] In some embodiments, the powder conveying device further includes a rotary feeder fixedly connected below the powder storage tank; the rotary feeder has a powder inlet and a powder outlet; the powder inlet is used to communicate with the powder storage tank; the powder outlet of the rotary feeder faces downward, and the feed port of the pneumatic acceleration chamber is connected through to the powder outlet of the rotary feeder.

[0012] In some embodiments, a filter is installed at the other end of the conveying pipe to prevent the powder from being discharged.

[0013] In some embodiments, the gas in the compressed gas storage tank is compressed air.

[0014] This utility model also proposes a production device, including production equipment, a second weighing module and the aforementioned powder conveying device, wherein the conveying pipeline is used to convey powder from the powder storage tank to the production equipment; and the second weighing module is used to weigh the production equipment before and after conveying the powder.

[0015] As can be seen from the technical solution, the embodiments provided by this utility model have the following advantages: When the compressed gas in the compressed gas storage tank enters the acceleration chamber body from the inlet, a high-speed airflow region is formed within the acceleration chamber body. The powder enters the acceleration chamber body from the feed inlet, is accelerated by the high-speed airflow, and moves towards the discharge outlet. It is then transported by the high-speed gas to the conveying pipeline, and finally transported to the production equipment through the conveying pipeline to generate the final product. By setting up a compressed gas storage tank and a pneumatic acceleration chamber, the power for conveying the powder and the air pressure within the conveying pipeline can be increased. The high-speed gas can not only break up powder agglomerates and physically disperse powder clusters, but also improve conveying efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a production apparatus according to an embodiment of the present utility model.

[0018] Figure label:

[0019] Production unit 1000, ground 2000;

[0020] Powder conveying device 100, production equipment 200;

[0021] Gantry Frame 1;

[0022] Powder storage tank 2, supporting lug 21;

[0023] Compressed gas storage tank 3, gas inlet 31, gas outlet 32;

[0024] 4. Pneumatic acceleration chamber, 41. Acceleration chamber body, 411. Air inlet, 412. Feed inlet, 413.

[0025] 5. Delivery pipe; 51. Filter.

[0026] Pulse air supply valve 6;

[0027] First weighing device 7;

[0028] 8. Rotary feeder. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The following is for reference. Figure 1 The present invention describes a powder conveying device 100 and a production device 1000 according to embodiments of the present invention.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides a powder conveying device 100, which includes a powder storage tank 2, a compressed gas storage tank 3, a pneumatic acceleration chamber 4, and a conveying pipeline 5.

[0035] The pneumatic acceleration chamber 4 has an acceleration chamber body 41 and an air inlet 411, a feed inlet 412 and a discharge outlet 413 connected to the acceleration chamber body 41. The air inlet 411 is used to connect to the compressed gas storage tank 3, and the feed inlet 412 is used to connect to the powder storage tank 2. One end of the conveying pipe 5 is connected to the discharge outlet 413 of the pneumatic acceleration chamber 4, and the other end of the conveying pipe 5 is used to connect to the production equipment 200, so that the conveying pipe 5 is used to convey the powder in the powder storage tank 2 to the production equipment 200.

[0036] As can be seen from the technical solution, the embodiments provided by this utility model have the following advantages: When the compressed gas in the compressed gas storage tank 3 enters the acceleration chamber body 41 from the air inlet 411, a high-speed airflow region is formed within the acceleration chamber body 41. The powder enters the acceleration chamber body 41 from the feed inlet 412, is accelerated under the action of the high-speed airflow, and moves towards the discharge outlet 413. Subsequently, it is transported by the high-speed gas to the conveying pipeline 5, and finally transported to the production equipment 200 through the conveying pipeline 5 to generate the final product. By setting up the compressed gas storage tank 3 and the pneumatic acceleration chamber 4, the power for conveying the powder and the air pressure within the conveying pipeline 5 can be increased. Not only can the high-speed gas break up powder agglomerates and physically disperse powder clusters, but it can also improve the conveying efficiency.

[0037] In a specific application scenario, the staff uses a screw conveyor to quantitatively transport powder to powder storage tank 2 to store the target amount of powder in powder storage tank 2, and then transports the powder in powder storage tank 2, which has been confirmed to be of the target weight, to production equipment 200.

[0038] like Figure 1 As shown, in some examples, the powder conveying device 100 includes a support frame for support on the ground 2000, and the powder storage tank 2 is mounted on the support frame. The support frame can provide stable support for the powder storage tank 2, which is beneficial to the stability of the powder conveying device 100 in conveying powder. The support frame here can be a gantry frame 1.

[0039] like Figure 1 As shown, in some examples, the compressed gas storage tank 3 and the pneumatic acceleration chamber 4 are arranged adjacent to each other and connected by a connecting pipe. The compressed gas storage tank 3 supplies compressed gas to the pneumatic acceleration chamber 4 through the air inlet 411 connected to the pneumatic acceleration chamber 4. By placing the compressed gas storage tank 3 and the pneumatic acceleration chamber 4 adjacent to each other, the length of the connecting pipe is reduced, thereby reducing the kinetic energy loss of the compressed gas.

[0040] Example 2

[0041] like Figure 1As shown, the powder conveying device 100 further includes a pulse air supply valve 6. The compressed gas storage tank 3 and the pneumatic acceleration chamber 4 are connected through the pulse air supply valve 6. The pulse air supply valve 6 is used to control the flow rate and supply pressure of the gas from the compressed gas storage tank 3 to the pneumatic acceleration chamber 4. The pulse air supply valve 6 opens and closes periodically according to preset pneumatic valve pulse parameters, forming a pulse airflow. Under the control of the pulse air supply valve 6, the gas supply from the compressed gas storage tank 3 to the pneumatic acceleration chamber 4 is intermittent and periodic. The duration and frequency of each opening of the pulse air supply valve 6 can be adjusted. In the powder conveying device, pulse air supply can more effectively accelerate and convey the powder, avoiding problems such as powder accumulation, blockage, or uneven conveying that may be caused by continuous air supply. Under different production needs, such as conveying different types of powder or according to the feeding speed requirements of the production equipment 200, controlling the flow rate and supply pressure of the gas input to the pneumatic acceleration chamber 4 through the pulse air supply valve 6 can ensure that the powder is conveyed at a suitable speed and state. For example, finer powders may require a smaller gas flow rate to prevent excessive dispersion; while coarser or easily agglomerated powders may require a larger gas flow rate for better acceleration and dispersion. By setting the pulse gas supply valve 6, the gas flow rate entering the pneumatic acceleration chamber 4 from the compressed gas storage tank 3 and the instantaneous gas source for pneumatic conveying can be adjusted, thus providing sufficient initial kinetic energy. Simultaneously, the pulse gas supply valve 6 can adjust the flow rate and time to ensure a smoother entry of compressed gas into the pneumatic acceleration chamber 4, maintaining stable pressure and helping to avoid pressure surges in the acceleration chamber body 41 and the conveying pipeline 5. It should be further noted that the pneumatic valve pulse parameters of the pulse gas supply valve 6 include pulse frequency setting and pulse duration. For the pulse frequency setting, a lower frequency can be started to observe the powder conveying situation. If the conveying speed is slow, the frequency can be gradually increased until a satisfactory conveying effect is achieved. For example, starting from 5 times per second, gradually increasing to 10 or 15 times per second, and observing the effect. Similarly, regarding the pulse duration, experiments can begin with a shorter duration (e.g., 5 milliseconds), gradually adjusting it based on the delivery effect, potentially reaching a maximum of 100 milliseconds or even longer, until a good delivery effect is achieved. Adjusting the gas delivery from the pulse supply valve 6 to the pneumatic acceleration chamber 4 by controlling the pulse frequency and pulse duration are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is merely to illustrate the beneficial effects achievable by this hardware structure improvement in conjunction with common knowledge. The effects achieved in this novel embodiment do not depend on the implementation of these illustrative methods.

[0042] like Figure 1As shown, the powder conveying device 100 further includes a pressure sensor (not shown) and a control device (not shown). The control device is communicatively connected to the pressure sensor; this communication connection is possible. The pressure sensor is used to detect the air pressure in the production equipment 200. The control device is electrically connected to the pulse air supply valve 6 and is used to control the operating state of the pulse air supply valve 6. By detecting the air pressure in the production equipment 200 through the pressure sensor and feeding the data back to the control device, the control device can control the operating state of the pulse air supply valve 6 based on the received air pressure data, adjusting the pneumatic valve pulse parameters (pulse frequency and pulse width) of the pulse air supply valve 6, thereby automating the entire powder conveying process. For example, when the air pressure in the production equipment 200 is lower than the set value, the control device can adjust the pulse air supply valve 6 to increase the gas flow rate, providing more compressed gas to the pneumatic acceleration chamber 4 to accelerate the powder conveying speed, thereby improving conveying efficiency. Conversely, when the air pressure is too high, the control device can reduce the gas flow rate or even close the pulse air supply valve 6 to avoid damage to the production equipment 200 due to excessive air pressure.

[0043] It should be noted that in the above embodiments, the control device and the pressure sensor are both hardware foundations for adjusting the flow rate and input time of the compressed gas storage tank 3 into the pneumatic acceleration chamber 4. This embodiment focuses on the hardware connection structure between the pressure sensor, the control device, and the pulse air supply valve 6, and the beneficial effects of this structure on the automated control of the powder conveying process. Specifically, the control device is electrically connected to the pressure sensor, which transmits an electrical signal to the control device. The control device converts this electrical signal into a pressure value, compares the pressure value with a set value, and then controls the pulse frequency and pulse width of the pulse air supply valve 6 to adjust the gas delivery from the pulse air supply valve 6 to the pneumatic acceleration chamber 4. The conversion of electrical signals to pressure values, the comparison of pressure values ​​with set values, and the control device controlling the input flow rate and input time of the pulse air supply valve 6 involved in the above embodiments are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is merely to illustrate the beneficial effects that this hardware structure improvement can achieve in conjunction with common knowledge. The effects achieved in this novel embodiment do not depend on the implementation of these illustrative methods. Furthermore, the control device is configured to adjust the pneumatic valve pulse parameters of the pulse air supply valve 6 to regulate the delivery of gas from the compressed gas storage tank 3 to the pneumatic acceleration chamber 4 when the air pressure detected by the air pressure sensor exceeds a preset threshold. The powder conveying device 100 is used to convey powder and operates under positive pressure. When the inlet air volume exceeds the outlet air volume, positive pressure will form in the production equipment 200. Exceeding a certain value will damage the seal of the production equipment 200. Therefore, when the air pressure in the production equipment 200 is too high, the control device can reduce the gas flow or even close the pulse air supply valve 6 to prevent damage to the production equipment 200 due to excessive air pressure.

[0044] Furthermore, the control device is used to adjust the pneumatic valve pulse parameters of the pulse air supply valve 6 to make the pressure at the air inlet 411 of the pneumatic acceleration chamber 4 0.5MPa~0.6MPa. In related technologies, the air source pressure of powder conveying devices is generally between 0.6MPa and 0.8MPa, but the instantaneous pressure at the powder storage tank is too low to meet the requirements, resulting in powder residue in the conveying pipeline. In this embodiment, the compressed air storage tank is added to pressurize the air supply, and the flow rate and conveying time of the gas in the compressed gas storage tank 3 to the pneumatic acceleration chamber 4 are controlled by the pulse air supply valve 6 to make the pressure at the air inlet 411 of the pneumatic acceleration chamber 4 0.5MPa~0.6MPa. The inlet pressure in this range can increase the power of powder conveying and reduce the accumulation or blockage of powder in the conveying pipeline 5.

[0045] Example 3

[0046] like Figure 1 As shown, the powder conveying device 100 further includes a gantry frame 1 and a first weighing device 7, which is fixed to the gantry frame 1. Multiple spaced support lugs 21 are fixedly connected to the outer wall of the powder storage tank 2, and the powder storage tank 2 is placed on the first weighing device 7 via the support lugs 21. The first weighing device 7 is used to weigh the powder storage tank 2 before and after powder conveying. Thus, by weighing the mass of the powder storage tank 2 before and after powder conveying, the first weighing device 7 can obtain the amount reduced in the powder storage tank 2. The production equipment 200 has a second weighing module, which can weigh the production equipment 200 before and after powder conveying to obtain the amount increased in the production equipment 200. By comparing the amount reduced in the powder storage tank 2 with the amount increased in the production equipment 200, the mass of residual powder in the conveying pipeline 5 can be obtained. Based on this data, staff can further adjust the parameters of the pulse air supply valve 6 to increase the pressure at the air inlet 411 of the pneumatic acceleration chamber 4, thereby further reducing powder residue in the conveying pipeline 5.

[0047] Specifically, for powder storage tank 2, before powder is conveyed to production equipment 200 through conveying pipe 5, the first weighing device 7 weighs the powder storage tank 2, which has a certain initial amount of powder at this time, and records this initial weight value. This is a baseline data, representing the total weight of powder storage tank 2 before the powder conveying operation begins.

[0048] For production equipment 200, before receiving powder from conveying pipe 5, the second weighing module will weigh it to obtain the initial weight of production equipment 200 at this time. This weight mainly includes the weight of production equipment 200 itself and the weight of other materials that may already be in it, but does not include the weight of the powder that is about to be conveyed.

[0049] After the powder conveying process is completed, the first weighing device 7 weighs the powder storage tank 2 again. At this time, since some of the powder has been conveyed out, the weight of the powder storage tank 2 will decrease. Theoretically, the decrease in weight should be the weight of the powder that has been conveyed out.

[0050] Simultaneously, after receiving the powder from the conveying pipe 5, the second weighing module weighs the powder. At this point, the weight of the production equipment 200 will increase, theoretically representing the weight of the powder conveyed from the powder storage tank 2. However, in reality, some powder may remain in the conveying pipe 5, causing the weight loss in the powder storage tank 2 and the weight gain in the production equipment 200 to be different. Therefore, by comparing the weight loss in the powder storage tank 2 and the weight gain in the production equipment 200, the amount of powder remaining in the conveying pipe 5 can be determined.

[0051] like Figure 1 As shown, the powder conveying device 100 further includes a rotary feeder 8, which is fixedly connected below the powder storage tank 2. The rotary feeder 8 has a powder inlet and a powder outlet. The powder inlet is used to connect to the powder storage tank 2. The powder outlet of the rotary feeder 8 faces downward, and the feed port 412 of the pneumatic acceleration chamber 4 is connected through to the powder outlet of the rotary feeder 8. On the one hand, the rotary feeder 8 can control the speed at which the powder enters the pneumatic acceleration chamber 4 from the powder storage tank 2. On the other hand, by placing the rotary feeder 8 on the feed port 412 of the pneumatic acceleration chamber 4, it is possible to prevent gas from backflowing into the powder storage tank 2 and to force the powder to be fed into the pneumatic acceleration chamber 4.

[0052] In conjunction with the above embodiments, the powder storage tank 2, the rotary feeder 8, and the pneumatic acceleration chamber 4 are connected sequentially from top to bottom and suspended on the gantry frame 1. The powder storage tank 2, the rotary feeder 8, and the pneumatic acceleration chamber 4 do not contact the ground 2000. Thus, the powder storage tank 2 can be placed on the first weighing device 7 through the supporting lug 21, which can more accurately weigh the change in powder weight of the powder storage tank 2.

[0053] like Figure 1 As shown, in a specific example, a funnel is connected below the powder storage tank 2. The funnel is inverted cone shape and its outlet is used to connect to the powder inlet of the rotary feeder 8.

[0054] It should be further explained that the first weighing device 7 is provided with a supporting lug fixing structure, and the powder storage tank 2 is fixed on the supporting lug fixing structure. Specifically, the first weighing device 7 includes an upper pad, a weighing module, and a lower pad; the weighing module is used for weighing and is located between the upper pad and the lower pad; the upper pad has an upper bolt hole, and the lower pad has a lower bolt hole, which together form the supporting lug fixing structure; the supporting lug of the powder storage tank has a threaded hole, and during installation, fasteners are sequentially passed through the threaded hole, the upper bolt hole, and the lower bolt hole for fixing; after the lower pad is positioned on the gantry frame 1, the lower pad is welded to the gantry frame 1.

[0055] In a specific example, a certain weight of powder is first added to the powder storage tank 2, and the weight is recorded. The pulse air supply valve 6 is set to open for 3 seconds and close for 3 seconds according to the pneumatic valve pulse program parameters. During the powder conveying process, the pressure status of the production equipment 200 is observed, and the air supply pressure of the pneumatic acceleration chamber 2 and the pneumatic valve pulse parameters are adjusted in a timely manner. After the conveying is completed, the weight of the powder in the powder storage tank 2 is recorded, the amount of powder conveyed is calculated, and the powder entering the production equipment 200 is weighed to obtain the increase in powder in the production equipment 200. The increase in powder in the production equipment 200 is compared with the decrease in powder storage tank 2 to obtain the residual amount in the conveying pipeline.

[0056] Example 4

[0057] like Figure 1 As shown, a filter 51 is further installed at the other end of the conveying pipe 5 to prevent dust from being discharged. Because the conveyed material is powder and is under positive pressure, a filter 51 is provided at the other end of the conveying pipe 5 to prevent dust from being discharged.

[0058] Furthermore, the gas in the compressed gas storage tank 3 is compressed air. Compressed air is relatively inexpensive to obtain, which can reduce costs.

[0059] Furthermore, the capacity of the compressed gas storage tank is 0.9 m³ to 1.1 m³. The compressed gas storage tank 3 has a gas inlet 31 for replenishing compressed gas and a gas outlet 32 ​​connected to the pulse gas supply valve 6. The gas outlet 32 ​​of the compressed gas storage tank 3 is connected to the gas inlet 411 of the gas acceleration chamber through a connecting pipe and the pulse gas supply valve 6.

[0060] Example 5

[0061] like Figure 1 As shown, this embodiment provides a production apparatus 1000, which includes a production device 200, a second weighing module (not shown in the figure), and the aforementioned powder conveying device 100. The conveying pipe 5 is used to convey the powder in the powder storage tank 2 to the production device 200; the second weighing module is used to weigh the production device 200 before and after conveying the powder.

[0062] As can be seen from the above embodiments, the first weighing device 7 can determine the amount of powder reduction in the powder storage tank 2 by weighing the powder storage tank 2 before and after powder conveying. The production equipment 200 has a second weighing module, which can weigh the production equipment 200 before and after powder conveying to determine the amount of powder increase in the production equipment 200. By comparing the amount of powder reduction in the powder storage tank 2 with the amount of powder increase in the production equipment 200, the residual powder mass in the conveying pipeline 5 can be obtained. Based on this data, the operator can further adjust the parameters of the pulse air supply valve 6 to increase the pressure at the air inlet 411 of the pneumatic acceleration chamber 4, further reducing the residual powder mass in the conveying pipeline 5.

[0063] By setting up the powder conveying device 100, when the compressed gas in the compressed gas storage tank 3 enters the acceleration chamber body 41 from the air inlet 411, a high-speed airflow area is formed within the acceleration chamber body 41. The powder enters the acceleration chamber body 41 from the feed inlet 412, is accelerated under the action of the high-speed airflow, and moves towards the discharge outlet 413. Subsequently, it is conveyed by the high-speed gas to the conveying pipeline 5, and finally conveyed to the production equipment 200 through the conveying pipeline 5 to generate the final product. By setting up the compressed gas storage tank 3 and the pneumatic acceleration chamber 4, the power of conveying the powder and the air pressure in the conveying pipeline 5 can be increased. This not only breaks up powder agglomerates and physically disperses powder clusters, but also improves conveying efficiency, thereby reducing powder residue in the conveying pipeline 5, ensuring the required amount of powder for the production formula, and improving product quality.

[0064] Other configurations and operations of the production apparatus 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of the features. The vertical, horizontal, and front-back directions are defined as shown in the figures.

[0065] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powder conveying device, characterized in that, include: Powder storage tank (2); Compressed gas storage tank (3); The pneumatic acceleration chamber (4) has an acceleration chamber body (41) and an air inlet (411), a feed inlet (412) and a discharge outlet (413) connected to the acceleration chamber body (41). The air inlet (411) is used to connect to the compressed gas storage tank (3), and the feed inlet (412) is used to connect to the powder storage tank (2). The conveying pipe (5) is connected at one end to the discharge port (413) and at the other end to the production equipment (200), so that the conveying pipe (5) is used to convey the powder in the pneumatic acceleration chamber (4) to the production equipment (200).

2. The powder conveying device according to claim 1, characterized in that, It also includes a pulse gas supply valve (6), which is located between the compressed gas storage tank (3) and the pneumatic acceleration chamber (4). The pulse gas supply valve (6) is used to control the flow rate and supply pressure of the gas in the compressed gas storage tank (3) to the pneumatic acceleration chamber (4).

3. The powder conveying device according to claim 2, characterized in that, It also includes a pressure sensor and a control device, wherein the control device is communicatively connected to the pressure sensor to receive electrical signals from the pressure sensor; The pressure sensor is used to detect the pressure in the production equipment (200); The control device is used to be electrically connected to the pulse air supply valve (6) and to adjust the pneumatic pulse valve parameters of the pulse air supply valve (6).

4. The powder conveying device according to claim 3, characterized in that, The control device is configured to adjust the pneumatic pulse valve parameters of the pulse gas supply valve (6) to adjust the gas flow rate and supply pressure from the compressed gas storage tank (3) to the pneumatic acceleration chamber (4) when the gas pressure detected by the gas pressure sensor is greater than a preset threshold.

5. The powder conveying device according to claim 1, characterized in that, The capacity of the compressed gas storage tank is 0.9m³ to 1.1m³.

6. The powder conveying device according to claim 1, characterized in that, It also includes a gantry frame (1) and a first weighing device (7), the first weighing device (7) being fixed on the gantry frame (1); The powder storage tank (2) has a plurality of spaced support lugs (21) fixedly connected to its outer side wall, and the powder storage tank (2) is mounted on the first weighing device (7) via the support lugs (21). The first weighing device (7) is used to weigh the powder storage tank (2) before and after conveying the powder.

7. The powder conveying device according to claim 1 or 6, characterized in that, It also includes a rotary feeder (8) fixedly connected below the powder storage tank (2); The rotary feeder (8) has a powder inlet and a powder outlet; The powder inlet is used to connect to the powder storage tank (2). The powder outlet of the rotary feeder (8) faces downwards, and the feed inlet (412) of the pneumatic acceleration chamber (4) is connected through to the powder outlet of the rotary feeder (8).

8. The powder conveying device according to claim 1, characterized in that, A filter (51) is installed at the other end of the conveying pipe (5), which is used to prevent powder from being discharged.

9. The powder conveying device according to claim 1, characterized in that, The gas in the compressed gas storage tank (3) is compressed air.

10. A production apparatus, characterized in that, include: Production equipment (200); According to any one of claims 1-9, the powder conveying device (100) is used to convey the powder in the powder storage tank (2) to the production equipment (200); The second weighing module is used to weigh the production equipment (200) before and after conveying powder.

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