Powder degassing equipment

Abstract

The utility model discloses powder degassing equipment which comprises a main pipeline, a negative pressure source, a main valve, an adjusting valve and a controller, one end of the main pipeline is communicated with a conveying pipeline, the negative pressure source is communicated with the other end of the main pipeline and used for providing degassing pressure for the main pipeline and the conveying pipeline, the main valve is installed on the main pipeline, and the adjusting valve is installed on the main pipeline. The main pipeline is communicated with the controller and used for controlling on-off of the main pipeline, the adjusting valve is communicated with the main pipeline and used for controlling communication and disconnection of the main pipeline and the external environment, and the controller is connected with the main pipeline and the adjusting valve. According to the adjusting valve, the main pipeline can be communicated with the external environment, the degassing pressure in the main pipeline is adjusted, and when the conveying pipeline is blocked, the negative pressure source can enter a self-circulation state and does not need to be shut down. In addition, the controller can automatically control opening and closing of the trunk valve and the adjusting valve, and the automation degree of the powder degassing equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder degassing, and particularly relates to powder degassing equipment. Background Art

[0002] In the chemical, new energy, food and feed, pharmaceutical and other industries, dust often escapes during the packaging of powder products, resulting in serious dust emission. This not only pollutes the environment, but also easily reaches the explosion limit under poor ventilation conditions, creating an explosion hazard. In addition, the escaped dust will also affect the measurement accuracy.

[0003] To address the problem of dust leakage, powder degassing equipment is currently the primary method used to degas powder products. This equipment typically utilizes a vacuum pump to generate negative pressure, creating degassing pressure within the pipeline conveying the powder product. This extracts the gas within the powder product, resulting in a more compact powder product. However, existing powder degassing equipment frequently malfunctions or becomes clogged, requiring frequent startup and shutdown of the vacuum pump for maintenance, which is extremely inconvenient and impacts production. Furthermore, the degassing pressure provided by the powder degassing equipment is difficult to adjust, making it very inconvenient.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide a powder degassing device, which is used to solve the problems that the existing powder degassing equipment needs to frequently start and stop the vacuum pump and has difficulty in adjusting the degassing pressure.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a powder degassing device, which is applied to a powder conveying device, and the powder conveying device includes a conveying pipeline. The powder degassing device includes a main pipeline, a negative pressure source, a main valve, at least one regulating valve and a controller. One end of the main pipeline is connected to the conveying pipeline, and the negative pressure source is connected to the other end of the main pipeline, and is used to provide degassing pressure to the main pipeline and the conveying pipeline. The main valve is installed on the main pipeline and is used to control the opening and closing of the main pipeline. The regulating valve is connected to the main pipeline, and the regulating valve is used to control the connection and disconnection of the main pipeline with the external environment. The controller is connected to the main valve and / or the regulating valve and is used to control the opening and closing of the main valve and / or the regulating valve.

[0007] In one or more embodiments of the present invention, the regulating valve includes a first regulating valve in communication with the main pipeline. The first regulating valve is connected to a controller, and the controller is used to control the opening and closing of the first regulating valve.

[0008] In one or more embodiments of the present invention, the powder degassing equipment includes a first supplementary valve, and both ends of the first regulating valve are respectively connected to the main pipeline and the first supplementary valve.

[0009] In one or more embodiments of the present invention, the powder degassing equipment includes a first regulating pipeline connected to the main pipeline, and the first regulating valve is installed on the first regulating pipeline.

[0010] In one or more embodiments of the present invention, the regulating valve includes a second regulating valve connected to the main pipeline, the second regulating valve is located at one end of the main valve close to the negative pressure source, and the second regulating valve is connected to a controller, which is used to control the opening and closing of the second regulating valve.

[0011] In one or more embodiments of the present invention, the powder degassing device includes a first filter located at an end of the second regulating valve away from the main pipeline.

[0012] In one or more embodiments of the present invention, the powder degassing equipment includes an air supply pipeline connected to the main pipeline, and the second regulating valve is installed on the air supply pipeline.

[0013] In one or more embodiments of the present invention, the powder degassing device includes a second supplementary valve connected to the main pipeline.

[0014] In one or more embodiments of the present invention, the powder degassing equipment includes a back-blowing valve and a back-blowing gas source. The two ends of the back-blowing valve are respectively connected to the main pipeline and the back-blowing gas source. The back-blowing valve is connected to a controller, and the controller is used to control the opening and closing of the back-blowing valve.

[0015] In one or more embodiments of the present invention, the powder degassing equipment includes a backflush pipeline connected between the main pipeline and the backflush gas source, and the backflush valve is installed on the backflush pipeline.

[0016] In one or more embodiments of the present invention, the powder degassing device includes an air pressure detector installed on the conveying pipeline or the trunk pipeline, and the air pressure detector is electrically connected to the controller.

[0017] In one or more embodiments of the present invention, the powder degassing device includes a second filter installed on the main pipeline and close to the negative pressure source.

[0018] In one or more embodiments of the present invention, the powder degassing device includes a third filter installed on the trunk pipeline and close to the conveying pipeline.

[0019] In one or more embodiments of the present invention, the powder degassing equipment can provide multiple degassing pressures into the conveying pipeline.

[0020] Compared to existing technologies, the regulating valve of this utility model connects the main pipeline with the external environment, regulating the degassing pressure within the main pipeline and the conveying pipeline. Furthermore, in the event of a blockage in the conveying pipeline, a blockage in the main pipeline, or backflushing of the conveying pipeline, the regulating valve connects the negative pressure source with the external environment, allowing the negative pressure source to enter a self-circulating state, eliminating the need to shut down the negative pressure source. Furthermore, a controller automatically controls the opening and closing of the main valve and regulating valve, improving the automation level of the powder degassing equipment, making operation more convenient and degassing more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0022] Figure 1 This is a schematic structural diagram of a powder degassing device in one embodiment of the present invention.

[0023] Explanation of main reference numerals: 1. Conveying pipeline, 2. Main pipeline, 3. Negative pressure source, 4. Main valve, 5. Regulating valve, 501. First regulating valve, 502. Second regulating valve, 6. Controller, 7. First supplementary valve, 8. First regulating pipeline, 9. First filter, 10. Air supply pipeline, 11. Second supplementary valve, 12. Second regulating pipeline, 13. Back-blowing valve, 14. Back-blowing air source, 15. Back-blowing pipeline, 16. Air pressure detector, 17. Second filter, 18. Third filter. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0025] In one embodiment, referring to Figure 1 As shown, the utility model provides a powder degassing device, which is applied to a powder conveying device. The powder conveying device includes a conveying pipeline 1, and the powder degassing device includes a main pipeline 2, a negative pressure source 3, a main valve 4, at least one regulating valve 5 and a controller 6.

[0026] Specifically, one end of the trunk pipeline 2 is connected to the delivery pipeline 1, and a negative pressure source 3 is connected to the other end of the trunk pipeline 2, providing degassing pressure within the trunk pipeline 2 and the delivery pipeline 1. A vacuum pump can be used as the negative pressure source 3. A trunk valve 4 is mounted on the trunk pipeline 2 and controls the flow of gas through the trunk pipeline 2. A regulating valve 5 is connected to the trunk pipeline 2 and controls the flow of gas through the trunk pipeline 2. A controller 6 is connected to the trunk valve 4 and regulating valve 5 to control the flow of gas through the trunk pipeline 2.

[0027] According to the above structural design, the regulating valve 5 has two functions. One of them is to regulate the degassing pressure in the main pipeline 2 and the delivery pipeline 1. When the degassing pressure in the delivery pipeline 1 and the main pipeline 2 exceeds the preset degassing pressure, the regulating valve 5 can be opened to connect the main pipeline 2 with the external environment, and the external air enters the main pipeline 2 to reduce the degassing pressure in the main pipeline 2 and the delivery pipeline 1. When the degassing pressure in the delivery pipeline 1 and the main pipeline 2 returns to the preset degassing pressure, the regulating valve 5 can be closed to keep the degassing pressure in the delivery pipeline 1 and the main pipeline 2 always within a range.

[0028] Another function of the regulating valve 5 is that when the conveying pipeline 1 is blocked or the main pipeline 2 is blocked or the conveying pipeline 1 is backflushed, the main valve 4 can be closed and the regulating valve 5 can be opened to connect the negative pressure source 3 with the external environment, so that the negative pressure source 3 enters a self-circulating state, and thus there is no need to frequently start and stop the negative pressure source 3 when the degassing equipment needs to be repaired.

[0029] In addition, the controller 6 can realize automatic control of the opening and closing of the main valve 4 and the regulating valve 5, thereby improving the automation level of the powder degassing equipment, making the operation more convenient and the degassing efficiency higher.

[0030] In one embodiment, referring to Figure 1 As shown, the regulating valve 5 includes a first regulating valve 501 , which is connected to the trunk pipeline 2 and is used to regulate the degassing pressure in the trunk pipeline 2 .

[0031] Preferably, the powder degassing equipment further includes a first replenishing valve 7, which is disposed at the end of the first regulating valve 501 away from the main pipeline 2 and is used to supplement and adjust the degassing pressure in the main pipeline 2. The powder degassing equipment further includes a first regulating pipeline 8 connected to the main pipeline 2, and the first regulating pipeline 8 is used to connect the first regulating valve 501 and the first replenishing valve 7 to the same pipeline.

[0032] Preferably, the first regulating valve 501 is used for coarsely adjusting the degassing pressure, and the first supplementary valve 7 is used for finely adjusting the degassing pressure. The variation range of the degassing pressure is relatively large when the degassing pressure is coarsely adjusted within a unit time, and the variation range of the degassing pressure is relatively small when the degassing pressure is finely adjusted within a unit time.

[0033] Furthermore, the first supplementary valve 7 can be a knob-type valve.

[0034] Preferably, the first regulating valve 501 is connected to the controller 6 , and the operator can control the opening and closing of the first regulating valve 501 through the controller 6 .

[0035] In one embodiment, referring to Figure 1 As shown, the regulating valve 5 includes a second regulating valve 502, which is connected to the main pipeline 2 and located at the end of the main valve 4 near the negative pressure source 3. The second regulating valve 502 is used to connect the negative pressure source 3 with the external environment. The powder degassing equipment also includes a first filter 9, which is located at the end of the second regulating valve 502 away from the main pipeline 2. The first filter 9 is used to filter the air entering the main pipeline 2 to prevent external impurities such as dust from entering the negative pressure source 3 through the main pipeline 2. The powder degassing equipment also includes an air supply pipeline 10, which is connected to and communicates with the main pipeline 2 and is used to connect the second regulating valve 502 and the first filter 9 to the same pipeline.

[0036] Similarly, an end of the first replenishing valve 7 away from the main pipeline 2 may also be connected to a filter for filtering the air entering the main pipeline 2 .

[0037] Preferably, the second regulating valve 502 is connected to the controller 6 , and the operator can control the opening and closing of the second regulating valve 502 through the controller 6 .

[0038] In one embodiment, referring to Figure 1 As shown, the powder degassing equipment includes a second replenishing valve 11 connected to the main pipeline 2. This valve is used to fine-tune the degassing pressure within the main pipeline 2, such as during factory settings. The powder degassing equipment also includes a second regulating pipeline 12 connected to the main pipeline 2. The second replenishing valve 11 is mounted on the second regulating pipeline 12.

[0039] Specifically, when performing factory settings, first start the negative pressure source 3, then detect the current degassing pressure in the main pipeline 2, and then adjust the opening of the second supplementary valve 11 through the controller 6. When the degassing pressure in the main pipeline 2 reaches the factory degassing pressure, lock the second supplementary valve 11.

[0040] In one embodiment, referring to Figure 1As shown, the powder degassing equipment includes a backflush valve 13, a backflush gas source 14 and a backflush pipe 15. The backflush gas source 14 can be a gas storage tank, the backflush pipe 15 is connected between the main pipeline 2 and the backflush gas source 14, and the backflush valve 13 is installed on the backflush pipe 15.

[0041] When backflushing is required in the conveying pipeline 1 , the main valve 4 is closed, the backflushing valve 13 is opened, the backflushing gas source 14 is started to output the backflushing airflow, and the backflushing airflow enters the conveying pipeline 1 through the backflushing pipe 15 and the main pipe 2 to backflush the conveying pipeline 1 .

[0042] Preferably, the blowback valve 13 is connected to the controller 6 , and the operator can control the opening and closing of the blowback valve 13 through the controller 6 .

[0043] In one embodiment, referring to Figure 1 As shown, the powder degassing equipment includes an air pressure detector 16 mounted on the main pipeline 2 for detecting the degassing pressure within the main pipeline 2. The air pressure detector 16 is electrically connected to the controller 6 and is configured to transmit the degassing pressure within the main pipeline 2 to the controller 6 in real time, thereby facilitating the controller 6 to determine when to open or close the first regulating valve 501.

[0044] In other embodiments, the air pressure detector 16 may also be installed on the delivery pipeline 1 .

[0045] Preferably, the air pressure detector 16 can be a pressure gauge.

[0046] In one embodiment, referring to Figure 1 As shown, the powder degassing device includes a second filter 17, which is installed on the main pipeline 2 and is arranged close to the negative pressure source 3. The third filter 18 is used to filter the gas from the main pipeline 2 to prevent impurities such as dust in the main pipeline 2 from entering the negative pressure source 3.

[0047] Preferably, the second filter 17 is installed at the connection between the main pipeline 2 and the negative pressure source 3 .

[0048] Furthermore, the powder degassing device includes a third filter 18, which is installed on the main pipeline 2 and is arranged near the conveying pipeline 1. The third filter 18 is used to filter the gas extracted from the conveying pipeline 1 to prevent impurities such as powder product or dust in the conveying pipeline 1 from entering the negative pressure source 3.

[0049] The conveying pipeline 1 is generally configured to have multiple conveying speeds, and different conveying speeds should be adapted to different degassing pressures to avoid pipeline blockage due to excessive degassing pressure and insufficient degassing due to insufficient degassing pressure. To adapt to the various conveying speeds of the conveying pipeline 1, in one embodiment, the powder degassing equipment is configured to provide multiple degassing pressures within the conveying pipeline 1. The multiple degassing pressures are different and correspond one-to-one with the multiple conveying speeds of the conveying pipeline 1.

[0050] According to the above structural design, when the powder degassing equipment of the present invention degases the powder product in the conveying pipeline 1, the controller 6 opens the main valve 4 and closes the first regulating valve 501, the second regulating valve 502, the first replenishing valve 7 and the back-blowing valve 13. At the same time, the negative pressure source 3 is synchronously started to generate degassing pressure in the conveying pipeline 1 and the main pipeline 2, degassing the powder product in the conveying pipeline 1 and extracting the gas in the powder product.

[0051] During the degassing process of the powder product in the conveying pipeline 1, when the degassing pressure in the conveying pipeline 1 and the main pipeline 2 exceeds a preset value, the controller 6 opens the first regulating valve 501 and the first supplementary valve 7, allowing external air to enter the main pipeline 2, thereby reducing the degassing pressure in the conveying pipeline 1 and the main pipeline 2. When the degassing pressure in the conveying pipeline 1 and the main pipeline 2 has essentially returned to the preset value, the controller 6 closes the first regulating valve 501 and the first supplementary valve 7. Furthermore, during the degassing pressure adjustment process, the first regulating valve 501 is used for coarse adjustment of the degassing pressure, while the first supplementary valve 7 is used for fine adjustment of the degassing pressure. The operator or the controller 6 can freely adjust the opening of the first regulating valve 501 or the first supplementary valve 7 to adjust the degassing pressure according to actual conditions.

[0052] When the delivery pipeline 1 is blocked or the main pipeline 2 is blocked or the delivery pipeline 1 is backflushed, the controller 6 closes the main valve 4 and opens the second regulating valve 502, connecting the negative pressure source 3 with the external environment, so that the negative pressure source 3 enters a self-circulating state, and thus there is no need to frequently start and stop the negative pressure source 3 when the degassing equipment needs to be repaired.

[0053] In addition, when backflushing the conveying pipeline 1, the controller 6 also needs to close the main valve 4, open the backflushing valve 13 and start the backflushing air source 14, generate a backflushing airflow through the backflushing air source 14, and convey the backflushing airflow into the conveying pipeline 1 to backflush the filter screen and other filter devices installed in the conveying pipeline 1.

[0054] The specific embodiments described above in conjunction with the accompanying drawings describe exemplary embodiments, but do not represent all embodiments that can be implemented or fall within the scope of protection of the claims. The term "exemplary" used throughout this specification means "used as an example, instance or illustration" and does not mean "preferred" or "having advantages" over other embodiments. For the purpose of providing an understanding of the described technology, the specific embodiments include specific details. However, these technologies can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0055] The foregoing description of the present disclosure is provided to enable any person skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is intended to be consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A powder degassing device, wherein the powder degassing device is applied to a powder conveying device, wherein the powder conveying device comprises a conveying pipe (1), characterized in that: The powder degassing equipment includes: A trunk pipeline (2), one end of which is connected to the delivery pipeline (1); a negative pressure source (3) connected to the other end of the trunk pipeline (2) and used to provide degassing pressure to the trunk pipeline (2) and the delivery pipeline (1); A main valve (4) is installed on the main pipeline (2) and is used to control the opening and closing of the main pipeline (2); at least one regulating valve (5), the regulating valve (5) being in communication with the trunk pipeline (2), the regulating valve (5) being used to control the connection and disconnection between the trunk pipeline (2) and the external environment; The controller (6) is connected to the main circuit valve (4) and / or the regulating valve (5) and is used to control the opening and closing of the main circuit valve (4) and / or the regulating valve (5).

2. The powder degassing equipment according to claim 1, characterized in that: The regulating valve (5) comprises a first regulating valve (501) in communication with the main pipeline (2), wherein the first regulating valve (501) is connected to a controller (6), and the controller (6) is used to control the opening and closing of the first regulating valve (501).

3. The powder degassing equipment according to claim 2, characterized in that: The powder degassing device comprises a first supplementary valve (7), and both ends of the first regulating valve (501) are respectively connected to the main pipeline (2) and the first supplementary valve (7); and / or, The powder degassing equipment comprises a first regulating pipeline (8) connected to the trunk pipeline (2), and the first regulating valve (501) is installed on the first regulating pipeline (8).

4. The powder degassing equipment according to claim 1, characterized in that: The regulating valve (5) includes a second regulating valve (502) connected to the main pipeline (2), the second regulating valve (502) is located at one end of the main valve (4) close to the negative pressure source (3), and the second regulating valve (502) is connected to a controller (6), and the controller (6) is used to control the opening and closing of the second regulating valve (502).

5. The powder degassing equipment according to claim 4, characterized in that: The powder degassing device comprises a first filter (9) located at an end of the second regulating valve (502) away from the trunk pipeline (2); and / or, The powder degassing equipment comprises an air supply pipeline (10) connected to the trunk pipeline (2), and the second regulating valve (502) is installed on the air supply pipeline (10).

6. The powder degassing equipment according to claim 1, characterized in that: The powder degassing device comprises a second supplementary valve (11) in communication with the trunk pipeline (2).

7. The powder degassing equipment according to claim 1, characterized in that: The powder degassing equipment includes a back-blowing valve (13) and a back-blowing gas source (14), wherein both ends of the back-blowing valve (13) are respectively connected to the trunk pipeline (2) and the back-blowing gas source (14), and the back-blowing valve (13) is connected to a controller (6), and the controller (6) is used to control the opening and closing of the back-blowing valve (13).

8. The powder degassing equipment according to claim 7, characterized in that: The powder degassing equipment comprises a backflush pipe (15) connected between the trunk pipe (2) and the backflush gas source (14), and the backflush valve (13) is installed on the backflush pipe (15).

9. The powder degassing equipment according to claim 1, characterized in that: The powder degassing device comprises an air pressure detector (16) installed on the conveying pipeline (1) or the trunk pipeline (2), and the air pressure detector (16) is electrically connected to the controller (6).

10. The powder degassing equipment according to claim 1, characterized in that: The powder degassing device includes a second filter (17) installed on the trunk pipeline (2) and close to the negative pressure source (3); and / or, The powder degassing device comprises a third filter (18) installed on the trunk pipeline (2) and close to the conveying pipeline (1).

11. The powder degassing equipment according to claim 1, characterized in that: The powder degassing equipment is capable of providing multiple degassing pressures into the conveying pipeline (1).

Images