Vacuum continuous feeding device

Abstract

The utility model discloses a vacuum continuous feeding device, which relates to the technical field of metal powder feeding equipment and comprises a feeding system, a transition cabin, a gate valve, a feeding system and a vacuum system. The charging system is communicated with the transition cabin, the transition cabin is communicated with the feeding system through a gate valve, and the vacuum system is respectively connected with the transition cabin and the feeding system through pipelines. According to the scheme, the transition cabin is additionally arranged in a common stock bin, and a new gate valve structure is designed between the transition cabin and the feeding bin, so that damage of metal powder to a sealing structure is effectively reduced, the service life of the continuous feeding mechanism is prolonged, raw material loss and dust pollution are reduced, and production benefits are increased; and a vacuum system used in cooperation can greatly keep a vacuum environment, and oxidation of the active metal powder is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of metal powder feeding equipment, and more specifically to the technical field of a vacuum continuous feeding device. Background Technology

[0002] Metal powders are the main raw materials for powder metallurgy, and their development is driven by the growth of powder metallurgy technology and its downstream demand. Powder metallurgy technology has extremely wide application potential in high-end manufacturing fields such as robotics, aerospace equipment, and new energy vehicles. With the continuous transformation and upgrading of my country's manufacturing industry, there is significant room for future growth in the demand for metal powders.

[0003] In general, powder metallurgy processes involve extruding and pressing metal powder into alloy ingots of the desired shape. However, common feeding devices often cause dust leakage, leading to contamination and oxidation. To address this, vacuum feeders and other sealed feeding mechanisms have been developed. While these solutions alleviate some of the leakage and oxidation issues, damage to the sealed structure from the metal powder is unavoidable. This not only increases powder loss but also accelerates equipment wear and tear, further exacerbating safety hazards such as dust pollution and accumulation. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of existing sealed feeding mechanisms that easily damage the sealing structure, cause dust pollution, and result in low production efficiency during the feeding of metal powder. This solution adds a transition chamber to the structure of a common silo, and through controlling the coordination between the valves and the hopper, transition chamber, and feeding bin, achieves continuous and sustained feeding.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] This utility model provides a vacuum continuous feeding device, including a feeding system, a transition chamber, a gate valve, a feeding system, and a vacuum system;

[0007] The feeding system is connected to the transition chamber, and the transition chamber is connected to the feeding system through a gate valve. The vacuum system is connected to the transition chamber and the feeding system through pipelines respectively.

[0008] This solution adds a transition chamber to the common silo structure and designs a new gate valve structure between the transition chamber and the feeding silo. This effectively reduces the damage to the sealing structure caused by metal powder, thereby increasing the service life of the continuous feeding mechanism, reducing raw material loss and dust pollution, and increasing production efficiency. The vacuum system used in conjunction with this solution can greatly maintain the vacuum environment and reduce the oxidation of active metal powder.

[0009] In one embodiment, the feeding system includes a discharge port, a feeding funnel, a cylinder assembly, and a feed valve. The discharge port is located on the feeding funnel, which is connected to the feed valve via a sliding connection. The feed valve communicates with the interior of the transition chamber. The cylinder assembly is installed on both sides of the feed valve and fixed above the transition chamber. The top piston rod of the cylinder assembly is connected to the feeding funnel.

[0010] Specifically, the vertical movement of the feeding funnel is controlled by a cylinder assembly, and the metal powder enters the transition chamber through the feeding system.

[0011] In one embodiment, a discharge valve is hinged at the discharge port below the transition chamber, and a discharge cylinder for controlling the opening and closing of the discharge valve is provided at the bottom of the transition chamber. The discharge cylinder is vertically downward, and a connecting rod mechanism is hinged to the end of the piston rod at the bottom of the discharge cylinder. The end of the connecting rod mechanism is hinged to the discharge valve.

[0012] Specifically, such as Figure 2 The diagram shows the internal structure of the gate valve. The discharge valve controls the discharge of material from the transition chamber. The discharge valve is controlled to open and close by a linkage mechanism driven by a discharge cylinder.

[0013] In one embodiment, the gate valve includes a valve body and a gate valve core disposed within the valve body and located below the discharge valve. Both the upper and lower surfaces of the gate valve core are provided with PTFE pressure strips.

[0014] Specifically, the gate valve core is located below the discharge valve, and both the upper and lower surfaces of the gate valve core are equipped with PTFE pressure strips, which ensure that the valve core can be effectively sealed during operation.

[0015] In one embodiment, the feeding system is located below the gate valve and is connected to the outlet of the gate valve via a connecting cylinder.

[0016] In one embodiment, the feeding system includes a powder feeding bin and a powder feeding cylinder, wherein the inlet of the powder feeding bin is connected to the connecting cylinder, and the outlet of the powder feeding bin is connected to the inlet of the powder feeding cylinder.

[0017] In one embodiment, the powder feeding cylinder is arranged horizontally, and an auger is installed inside the powder feeding cylinder.

[0018] Specifically, the powder feeding hopper can store materials, and the auger inside the powder feeding cylinder rotates to achieve uniform feeding.

[0019] In one embodiment, the vacuum system includes a first vacuum line, a second vacuum line, a transition chamber vacuum pump, a feed chamber vacuum pump, and a balancing valve.

[0020] One end of the first vacuum line is connected to the inside of the transition chamber, and the other end is connected to the inside of the powder delivery cylinder. A balance valve is installed on the first vacuum line to balance the air pressure between the transition chamber and the powder delivery cylinder. The vacuum pump of the transition chamber is connected to the first vacuum line.

[0021] One end of the second vacuum line is connected to the powder feeding cylinder via two branch pipes, and the other end is connected to the first vacuum line. The vacuum pump of the feeding hopper is connected to the second vacuum line.

[0022] In one embodiment, a first filter is provided on the first vacuum line; a second filter is provided on the second vacuum line; and a third filter and a fourth filter are respectively provided on the two branch lines.

[0023] In one embodiment, the vacuum system further includes a vacuum breaking valve that is connected to the interior of the transition chamber.

[0024] Specifically, such as Figure 1 As shown, the vacuum pipeline system is formed by the vacuum pumps in the transition chamber and the feeding chamber. The balance valve is used to balance the air pressure between the two chambers (transition chamber and powder feeding cylinder), and the vacuum breaking valve is used to purify the pipeline and prevent metal powder from entering.

[0025] Compared to direct vacuum feeders, this device employs a transition chamber design, utilizing vacuum system valves to achieve continuous feeding under vacuum conditions.

[0026] The beneficial effects of this utility model are as follows:

[0027] 1. The metal powder vacuum continuous feeding device provided by this utility model adds a transition chamber to the structure of a common silo. A new gate valve structure is designed between the transition chamber and the feeding silo, which effectively reduces the damage of metal powder to the sealing structure, thereby increasing the service life of the continuous feeding mechanism, reducing raw material loss and dust pollution, and increasing production efficiency. The vacuum system used in conjunction with it can greatly maintain the vacuum environment and reduce the oxidation of active metal powder.

[0028] 2. The discharge valve controls the discharge of material from the transition chamber. The discharge valve is controlled to open and close by a linkage mechanism driven by a discharge cylinder.

[0029] 3. The vacuum pipeline system is formed by the vacuum pumps in the transition chamber and the feeding chamber. The balance valve is used to balance the air pressure between the two chambers (transition chamber and powder feeding cylinder), and the vacuum breaking valve is used to purify the pipeline and prevent metal powder from entering. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 yes Figure 1 A schematic diagram of a partial structure;

[0033] Attached reference numerals: 1-discharge port, 2-feeding funnel, 3-cylinder assembly, 4-feed valve, 5-transfer chamber, 6-discharge cylinder, 7-discharge valve, 8-gate valve, 9-connecting cylinder, 10-powder hopper, 11-powder cylinder. Detailed Implementation

[0034] To make the technical problems, technical solutions, and technical effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0038] Example 1

[0039] like Figures 1 to 2 As shown, this embodiment provides a vacuum continuous feeding device, including a feeding system, a transition chamber 5, a gate valve 8, a feeding system, and a vacuum system; the feeding system is connected to the transition chamber 5, the transition chamber 5 is connected to the feeding system through the gate valve 8, and the vacuum system is connected to the transition chamber 5 and the feeding system through pipelines respectively.

[0040] This solution adds a transition chamber 5 to the common silo structure. A new gate valve 8 structure is designed between the transition chamber 5 and the feeding silo, which effectively reduces the damage of metal powder to the sealing structure, thereby increasing the service life of the continuous feeding mechanism, reducing raw material loss and dust pollution, and increasing production efficiency. The vacuum system used in conjunction can greatly maintain the vacuum environment and reduce the oxidation of active metal powder.

[0041] Example 2

[0042] like Figures 1 to 2 As shown, this embodiment provides a vacuum continuous feeding device, including a feeding system, a transition chamber 5, a gate valve 8, a feeding system, and a vacuum system; the feeding system is connected to the transition chamber 5, the transition chamber 5 is connected to the feeding system through the gate valve 8, and the vacuum system is connected to the transition chamber 5 and the feeding system through pipelines respectively.

[0043] The feeding system includes a discharge port 1, a feeding funnel 2, a cylinder assembly 3, and a feed valve 4. The discharge port 1 is located on the feeding funnel 2. The feeding funnel 2 is connected to the feed valve 4 by a sliding plug-in connection. The feed valve 4 is connected to the interior of the transition chamber 5. The cylinder assembly 3 is installed on both sides of the feed valve 4 and fixed above the transition chamber 5. The piston rod at the top of the cylinder assembly 3 is connected to the feeding funnel 2.

[0044] Specifically, the vertical movement of the feeding hopper 2 is controlled by the cylinder assembly 3, and the metal powder enters the transition chamber 5 through the feeding system.

[0045] Example 3

[0046] This embodiment is a further optimization based on embodiment 2, specifically:

[0047] A discharge valve 7 is hinged at the discharge port below the transition chamber 5. A discharge cylinder 6 is installed at the bottom of the transition chamber 5 to control the opening and closing of the discharge valve 7. The discharge cylinder 6 is set vertically downward, and a connecting rod mechanism is hinged to the bottom piston rod of the discharge cylinder 6. The end of the connecting rod mechanism is hinged to the discharge valve 7.

[0048] Specifically, such as Figure 2 The diagram shows the internal structure of the gate valve 8. The discharge valve 7 controls the discharge of material from the transition chamber 5. The discharge valve 7 is controlled to open and close by a linkage mechanism driven by the discharge cylinder 6.

[0049] Example 4

[0050] This embodiment is a further optimization based on embodiment 3, specifically:

[0051] The gate valve 8 includes a valve body and a gate valve core disposed within the valve body and located below the discharge valve 7. Both the upper and lower surfaces of the gate valve core are provided with PTFE pressure strips.

[0052] Specifically, the gate valve 8 core is located below the discharge valve 7. Both the upper and lower sides of the gate valve 8 core are equipped with PTFE pressure strips, which ensure that the valve core can be effectively sealed during operation.

[0053] Example 5

[0054] This embodiment is a further optimization based on embodiment 4, specifically:

[0055] The feeding system is located below the gate valve 8 and is connected to the outlet of the gate valve 8 via the connecting cylinder 9. The feeding system includes a powder feeding bin 10 and a powder feeding cylinder 11. The inlet of the powder feeding bin 10 is connected to the connecting cylinder 9, and the outlet of the powder feeding bin 10 is connected to the inlet of the powder feeding cylinder 11. The powder feeding cylinder 11 is horizontally positioned, and an auger is installed inside the powder feeding cylinder 11.

[0056] Specifically, the powder feeding hopper 10 can store materials, and the powder is fed evenly through the rotation of the auger inside the powder feeding cylinder 11.

[0057] Example 6

[0058] This embodiment is a further optimization based on embodiment 5, specifically:

[0059] The vacuum system includes a first vacuum line 12, a second vacuum line, a transition chamber vacuum pump A1, a feeding chamber vacuum pump A7, and a balance valve A2;

[0060] One end of the first vacuum line 12 is connected to the interior of the transition chamber 5, and the other end is connected to the interior of the powder feeding cylinder. The balance valve A2 is installed on the first vacuum line 12 to balance the air pressure between the transition chamber 5 and the powder feeding cylinder. The transition chamber vacuum pump A1 is connected to the first vacuum line 12.

[0061] One end of the second vacuum pipeline is connected to the powder feeding cylinder through two branch pipes, and the other end is connected to the first vacuum pipeline 12. The vacuum pump A7 of the feeding hopper is connected to the second vacuum pipeline.

[0062] A first filter A8 is installed on the first vacuum pipeline 12; a second filter A3 is installed on the second vacuum pipeline; and a third filter A4 and a fourth filter A5 are installed on the two branch pipelines respectively.

[0063] The vacuum system also includes a vacuum breaking valve A6, which is connected to the interior of the transition chamber 5.

[0064] Specifically, such as Figure 1 As shown, the vacuum pipeline 12 is formed by the transition chamber vacuum pump A1 and the feed chamber vacuum pump A7 to form a vacuum system. The balance valve A2 is used to balance the air pressure between the two chambers (transition chamber and powder feeding cylinder), and the vacuum breaking valve A6 is also included. The filters (A8, A3, A4, A5) are used to purify the pipeline and prevent metal powder from entering.

[0065] Compared to direct vacuum feeders, this device employs a transition chamber design, utilizing vacuum system valves to achieve continuous feeding under vacuum conditions.

[0066] The working process is as follows: In the initial stage, the vacuum pump A7 of the feeding hopper is turned on to draw a vacuum environment, the vacuum pump A1 of the transition chamber is turned off, the balance valve A2 is turned off, the gate valve 8 is turned off, the discharge valve 7 is turned off, the feeding system, the powder feeding hopper 10 and the powder feeding cylinder 11 are feeding normally, there is no metal powder in the transition chamber 5, and at the same time the vacuum breaking valve A6 is turned off.

[0067] In the first cycle, the vacuum breaking valve A6 opens to make the air pressure in the transition chamber 5 equal to the atmospheric pressure. Then, the feed valve 4 opens, and the cylinder assembly 3 drives the feeding funnel 2 to fall. The long neck of the feeding funnel 2 passes completely through the feed valve of the transition chamber, which can reduce the damage of metal powder to the valve. The discharge port 1 of the vacuum feeder falls and feeding begins. The metal powder enters the transition chamber 5 from the discharge port 1 of the vacuum feeder through the feeding funnel 2. When the transition chamber 5 is fully fed, the vacuum feeder stops working. After the feeding funnel 2 and the discharge port 1 of the vacuum feeder are raised, the feed valve of the transition chamber 5 closes, the vacuum breaking valve A6 closes, and the vacuum pump A1 of the transition chamber is turned on, so that the transition chamber 5 can maintain a vacuum environment.

[0068] When there is no material in the powder feeding hopper 10, first open the balance valve A2 to equalize the air pressure in both hoppers, then open the gate valve 8. Next, the discharge cylinder 6 drives the linkage mechanism 701 to open the discharge valve 7. Timing begins simultaneously as the metal powder enters the powder feeding hopper 10. Once the estimated time is reached, the discharge valve 7, gate valve 8, balance valve A2, and transition chamber vacuum pump A1 are closed, completing one feeding cycle. At this point, the entire feeding system returns to its initial state and begins cycling again to achieve continuous feeding.

[0069] As described above, the powder feeding bin 10 and the vacuum pump A7 in the feeding bin are always running, so that the metal powder is in a vacuum environment during storage in the feeding bin and feeding by the auger. The continuous feeding process in the vacuum environment is completed through the cooperation of the valve in the transition chamber 5.

Claims

1. A vacuum continuous feeding device, characterized in that, Includes a feeding system, a transition chamber (5), a gate valve (8), a feeding system, and a vacuum system; The feeding system is connected to the transition chamber (5), the transition chamber (5) is connected to the feeding system through the gate valve (8), and the vacuum system is connected to the transition chamber (5) and the feeding system through pipelines respectively.

2. The vacuum continuous feeding device according to claim 1, characterized in that, The feeding system includes a discharge port (1), a feeding funnel (2), a cylinder assembly (3), and a feed valve (4). The discharge port (1) is located on the feeding funnel (2). The feeding funnel (2) is connected to the feed valve (4) by a sliding plug-in method. The feed valve (4) is in communication with the interior of the transition chamber (5). The cylinder assembly (3) is installed on both sides of the feed valve (4) and fixed above the transition chamber (5). The top piston rod of the cylinder assembly (3) is connected to the feeding funnel (2).

3. The vacuum continuous feeding device according to claim 1, characterized in that, A discharge valve (7) is hinged at the discharge port below the transition chamber (5). A discharge cylinder (6) for controlling the opening and closing of the discharge valve (7) is provided at the bottom of the transition chamber (5). The discharge cylinder (6) is set vertically downward, and a connecting rod mechanism is hinged to the bottom piston rod of the discharge cylinder (6). The end of the connecting rod mechanism is hinged to the discharge valve (7).

4. The vacuum continuous feeding device according to claim 3, characterized in that, The gate valve (8) includes a valve body and a gate valve (8) core disposed in the valve body and located below the discharge valve (7). Both the upper and lower surfaces of the gate valve (8) core are provided with PTFE pressure strips.

5. A vacuum continuous feeding device according to claim 4, characterized in that, The feeding system is located below the gate valve (8), and the feeding system is connected to the outlet of the gate valve (8) through the connecting cylinder (9).

6. A vacuum continuous feeding device according to claim 5, characterized in that, The feeding system includes a powder feeding bin (10) and a powder feeding cylinder (11). The inlet of the powder feeding bin (10) is connected to the connecting cylinder (9), and the outlet of the powder feeding bin (10) is connected to the inlet of the powder feeding cylinder (11).

7. A vacuum continuous feeding device according to claim 6, characterized in that, The powder feeding cylinder (11) is arranged horizontally, and an auger is installed inside the powder feeding cylinder (11).

8. A vacuum continuous feeding device according to claim 6, characterized in that, The vacuum system includes a first vacuum line (12), a second vacuum line, a transition chamber vacuum pump (A1), a feed chamber vacuum pump (A7), and a balance valve (A2); One end of the first vacuum pipeline (12) is connected to the interior of the transition chamber (5), and the other end is connected to the interior of the powder delivery cylinder. The balance valve (A2) is installed on the first vacuum pipeline (12) to balance the air pressure between the transition chamber (5) and the powder delivery cylinder. The transition chamber vacuum pump (A1) is connected to the first vacuum pipeline (12). One end of the second vacuum pipeline is connected to the powder feeding cylinder through two branch pipes, and the other end is connected to the first vacuum pipeline (12). The feed hopper vacuum pump (A7) is connected to the second vacuum pipeline.

9. A vacuum continuous feeding device according to claim 8, characterized in that, The first vacuum line (12) is provided with a first filter (A8); the second vacuum line is provided with a second filter (A3); and the two branch lines are respectively provided with a third filter (A4) and a fourth filter (A5).

10. A vacuum continuous feeding device according to claim 8, characterized in that, The vacuum system also includes a vacuum breaking valve (A6), which is connected to the interior of the transition chamber (5).

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