Discharging mechanism with atmosphere protection function

Abstract

The utility model discloses a blanking mechanism with an atmosphere protection function. The blanking mechanism comprises a blanking hopper, a transition pipe, a blanking pipe, an upper powder valve and a lower powder valve, the bottom of the discharging hopper is fixedly communicated with the upper powder valve, the top of the transition pipe is fixedly communicated with the upper powder valve, the bottom of the transition pipe is fixedly communicated with the lower powder valve, the top of the discharging pipe is fixedly communicated with the lower powder valve, a gas inlet and a gas outlet are formed in the side wall of the transition pipe, and the gas inlet is used for inputting atmosphere protection gas. And the air outlet is used for discharging air in the transition pipe and outputting part of the atmosphere protection gas. According to the scheme, the problems that in an existing discharging mechanism with a double-powder-valve structure, when pressure adjustment is conducted on a transition pipe through an exhaust part, air in the external environment possibly enters the transition pipe through reverse osmosis of the exhaust part and makes direct contact with powder in the transition pipe, the powder is oxidized, and the purity and quality of the powder are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder production, in particular to a material discharge mechanism with atmosphere protection. Background Art

[0002] In the prior art, a dual-powder valve discharge mechanism includes a hopper, a transition pipe, a feed pipe, an upper powder valve, and a lower powder valve. The upper and lower powder valves are fixedly connected via a transition pipe. A vent is fixedly connected to one side of the transition pipe. The hopper is fixedly connected to the upper powder valve, and the feed pipe is fixedly connected to the lower powder valve. By opening the upper powder valve, powder in the hopper can pass through the upper powder valve into the transition pipe. Simultaneously, by opening the lower powder valve, powder in the transition pipe can pass through the lower powder valve into the feed pipe, where the powder is transported. Before the powder passes through the lower powder valve and enters the feed pipe, pressure regulation with the vent is often required to balance the pressure within the transition pipe and prevent blockage or leakage. However, during the venting process, air from the external environment can reversely permeate through the vent and enter the transition pipe, directly contacting the powder within. This can cause oxidation of the powder, thereby affecting its purity and quality. Utility Model Content

[0003] In response to the above-mentioned defects, the utility model proposes a feeding mechanism with atmosphere protection, which aims to solve the problem that in the existing feeding mechanism with a double powder valve structure, when the transition pipe is pressure-regulated through the exhaust part, the air in the external environment may reversely penetrate into the interior of the transition pipe through the exhaust part and directly contact the powder therein, causing the powder to be oxidized, thereby affecting the purity and quality of the powder.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A material discharge mechanism with atmosphere protection, comprising a material discharge hopper, a transition pipe, a material discharge pipe, an upper powder valve and a lower powder valve;

[0006] The bottom of the lower hopper is fixedly connected to the upper powder valve, the top of the transition pipe is fixedly connected to the upper powder valve, the bottom of the transition pipe is fixedly connected to the lower powder valve, the top of the lower pipe is fixedly connected to the lower powder valve, and the side wall of the transition pipe is provided with an air inlet and an air outlet, the air inlet is used to input atmosphere protection gas, and the air outlet is used to discharge the air in the transition pipe and output part of the atmosphere protection gas.

[0007] Preferably, two first material level gauges are further included, and both of the first material level gauges are arranged through the side wall of the transition pipe, and the two first material level gauges are distributed up and down.

[0008] Preferably, two second material level gauges are further included, and both of the second material level gauges are penetrated through the side wall of the lower hopper, and the two second material level gauges are distributed up and down.

[0009] Preferably, the upper powder valve and the lower powder valve are both rotary valves, or the upper powder valve and the lower powder valve are both gate valves, or the upper powder valve is a rotary valve and the lower powder valve is a gate valve, or the upper powder valve is a gate valve and the lower powder valve is a rotary valve.

[0010] Preferably, the gate valve includes a gate plate, a valve seat and a cylinder, the cylinder is fixed to the valve seat, the gate plate is arranged in the valve seat so as to be movable left and right, and the gate plate is installed at the driving end of the cylinder.

[0011] Preferably, the gate valve further includes two sealing blocks, and the top surface and the bottom surface of the gate plate are respectively connected to the valve seat through the respective sealing blocks.

[0012] Preferably, the gas outlet is provided with a control valve, and the control valve is used to adjust the discharge amount of gas in the transition pipe.

[0013] Preferably, the control valve comprises a valve body and a valve handle, and the valve handle is mounted on the valve body.

[0014] Preferably, it also includes a plurality of screws, the bottom of the lower hopper is fixed to the upper powder valve by the screws, the top of the transition pipe is fixed to the upper powder valve by the screws, the bottom of the transition pipe is fixed to the lower powder valve by the screws, and the top of the lower pipe is fixed to the lower powder valve by the screws.

[0015] The technical solution provided by the utility model may have the following beneficial effects:

[0016] In this solution, an air inlet and an air outlet are opened on the side wall of the filter tube, and atmosphere protective gas is introduced into the air inlet. The atmosphere protective gas enters the interior of the transition tube and is evenly distributed. The atmosphere protective gas can discharge the air inside the transition tube from the air outlet. When external air attempts to enter the interior of the transition tube from the air outlet, the atmosphere protective gas can effectively isolate the external air, thereby preventing external air from entering the interior of the transition tube, thereby preventing the powder from being oxidized, and thus improving the purity and quality of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of a blanking mechanism with atmosphere protection;

[0018] Figure 2 It is a schematic diagram of one embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 A partial enlarged view of area A in the middle.

[0020] Figure 4 It is a schematic diagram of one embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of one embodiment of the present utility model;

[0022] Figure 6 It is a schematic diagram of one embodiment of the present utility model;

[0023] Figure 7 It is a schematic diagram of one embodiment of the present invention.

[0024] Among them, 1. hopper; 2. transition pipe; 3. discharge pipe; 4. upper powder valve; 5. lower powder valve; 6. atmosphere protection furnace; 7. first material level meter; 8. second material level meter; 9. rotary valve; 10. gate valve; 11. screw; 21. air inlet; 22. air outlet; 91. motor; 92. valve core; 101. gate; 102. valve seat; 103. cylinder; 104. sealing block; 220. control valve; 2201. valve body; 2202. valve handle; DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] In the description of the present invention, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means more than two.

[0028] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "installation," "splicing," and "connection" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] A material discharge mechanism with atmosphere protection, comprising a discharge hopper 1, a transition pipe 2, a discharge pipe 3, an upper powder valve 4 and a lower powder valve 5;

[0030] The bottom of the lower hopper 1 is fixedly connected to the upper powder valve 4, the top of the transition pipe 2 is fixedly connected to the upper powder valve 4, the bottom of the transition pipe 2 is fixedly connected to the lower powder valve 5, and the top of the lower pipe 3 is fixedly connected to the lower powder valve 5. The side wall of the transition pipe 2 is provided with an air inlet 21 and an air outlet 22. The air inlet 21 is used to input atmosphere protection gas, and the air outlet 22 is used to discharge the air in the transition pipe 2 and to output part of the atmosphere protection gas.

[0031] This solution has a blanking mechanism with atmosphere protection, such as Figure 1-2 As shown, in this embodiment, the upper powder valve 4 and the lower powder valve 5 both have a rotary valve 9. The lower hopper 1 is connected to the atmosphere protection furnace 6, and the air inlet 21 is connected to the atmosphere protection gas pump (not shown) via a pipeline. In the initial state, the upper powder valve 4 and the lower powder valve 5 are both closed. When the powder that has passed through the atmosphere protection furnace 6 needs to be discharged, the powder first enters the lower hopper 1, and then the upper powder valve 4 and the lower powder valve 5 are rotated so that both the upper powder valve 4 and the lower powder valve 5 are opened. The powder enters the transition pipe 2 through the upper powder valve 4. At the same time, the atmosphere protection gas pump is started, and the atmosphere protection gas is input into the interior of the transition pipe 2 through the air inlet 21. The atmosphere protection gas contacts the powder in the transition pipe 2, which can effectively protect the surface quality of the powder. In this embodiment, the atmosphere protection gas is an inert gas, such as nitrogen, argon, etc. The powder in the transition pipe 2 enters the discharge pipe 3 through the lower powder valve 5, and the powder is transported and discharged in the discharge pipe 3. Furthermore, the flow rate of the powder passing through the upper powder valve 4 and the lower powder valve 5 is adjusted by adjusting the opening degree of the upper powder valve 4 and the lower powder valve 5.

[0032] In this solution, an air inlet 21 and an air outlet 22 are opened on the side wall of the transition pipe 2, and atmosphere protective gas is introduced into the air inlet 21. The atmosphere protective gas enters the interior of the transition pipe 2 and is evenly distributed. The atmosphere protective gas can discharge the air inside the transition pipe 2 from the air outlet 22. When external air attempts to enter the interior of the transition pipe 2 from the air outlet 22, the atmosphere protective gas can effectively isolate the external air, thereby preventing the external air from entering the interior of the transition pipe 2, thereby preventing the powder from being oxidized, and thus improving the purity and quality of the powder.

[0033] Preferably, two first material level meters 7 are further included. Both of the first material level meters 7 are arranged through the side wall of the transition pipe 2, and the two first material level meters 7 are distributed up and down.

[0034] In this embodiment, Figure 1 As shown, the provision of the first material level meter 7 facilitates measurement of the height of the powder in the transition duct 2. Specifically, when the first material level meter 7 located at the bottom detects powder, it indicates that the amount of powder in the transition duct 2 is small, and it is necessary to appropriately increase the valve opening of the upper powder valve 4 and decrease the valve opening of the lower powder valve 5 to increase the amount of powder flowing into the transition duct 2 and reduce the amount of powder flowing out of the transition duct 2. When the first material level meter 7 located at the top detects powder, it indicates that the amount of powder in the transition duct 2 has reached a limit, and it is necessary to appropriately decrease the valve opening of the upper powder valve 4 and increase the valve opening of the lower powder valve 5 to reduce the amount of powder flowing into the transition duct 2 and increase the amount of powder flowing out of the transition duct 2. This ensures that the powder in the transition duct 2 is not filled up, thereby ensuring the effective filling of the atmosphere protective gas.

[0035] Preferably, two second material level meters 8 are further included, and the two second material level meters 8 are both arranged through the side wall of the lower hopper 1, and the two second material level meters 8 are distributed up and down.

[0036] In this embodiment, Figure 1 As shown, the second level gauge 8 facilitates measuring the height of the powder in the lower hopper 1. Specifically, when the second level gauge 8 located at the bottom detects powder, it indicates that the amount of powder in the lower hopper 1 is small, and the opening degree of the upper powder valve 4 can be appropriately reduced to reduce the amount of powder flowing into the transition pipe 2. When the second level gauge 8 located at the top detects powder, it indicates that the amount of powder in the lower hopper 1 is sufficient, and the opening degree of the upper powder valve 4 can be appropriately increased to increase the amount of powder flowing into the transition pipe 2.

[0037] Preferably, the upper powder valve 4 and the lower powder valve 5 are both rotary valves 9, or the upper powder valve 4 and the lower powder valve 5 are both gate valves 10, or the upper powder valve 4 is a rotary valve 9 and the lower powder valve 5 is a gate valve 10, or the upper powder valve 4 is a gate valve 10 and the lower powder valve 5 is a rotary valve 9. In one embodiment, Figure 4 As shown, the upper powder valve 4 and the lower powder valve 5 are both designed as rotary valves 9, which can control the opening and closing degree of the valve disc by rotating the valve stem, thereby achieving precise control and regulation of the powder flow rate. Figure 5 As shown, the upper powder valve 4 and the lower powder valve 5 both adopt the design of gate valve 10. Since the medium channel in the gate valve 10 is longitudinal, the medium does not change the direction of movement when flowing through the valve, so the flow resistance is small. This is particularly beneficial for the transportation of powder, which can reduce energy consumption and improve transportation efficiency. Figure 6 As shown, the upper powder valve 4 adopts a rotary valve 9, and the lower powder valve 5 adopts a gate valve 10. The rotary valve 9 can control the flow of powder into the transition pipe 2. When the gate valve 10 is to be closed, the rotary valve 9 can stop rotating first to prevent the powder from falling into the transition pipe 2 and getting stuck in the gate gap of the gate valve 10, thereby affecting the sealing effect of the gate valve 10. When the gate valve 10 is completely closed, the rotary valve 9 starts to rotate to discharge the powder. In one embodiment, as Figure 7 As shown, the upper powder valve 4 adopts a gate valve 10, and the lower powder valve 5 adopts a rotary valve 9, which can simultaneously control the opening and closing degrees of the gate valve 10 and the rotary valve 9, thereby ensuring that the powder can be discharged continuously and stably at a preset rate.

[0038] Preferably, the rotary valve 9 includes a motor 91 and a valve core 92, and the valve core 92 is connected to the driving end of the motor 91. Figure 4 As shown, by starting the motor 91 , the motor 91 can drive the valve core 92 to rotate, thereby controlling the size of the valve channel (not shown) of the rotary valve 9 , thereby controlling the flow of powder through the rotary valve 9 .

[0039] Preferably, the gate valve 10 includes a gate plate 101, a valve seat 102 and a cylinder 103, wherein the cylinder 103 is fixed to the valve seat 102, the gate plate 101 is arranged in the valve seat 102 so as to be movable left and right, and the gate plate 101 is installed at the driving end of the cylinder 103. Figure 5 As shown, by starting the cylinder 103 , the cylinder 103 can drive the gate 101 to move left and right in the valve seat 102 , thereby controlling the degree of opening or closing of the gate 102 , thereby controlling the flow of powder through the gate valve 10 .

[0040] Preferably, the gate valve 10 further includes two sealing blocks 104, and the top surface and the bottom surface of the gate plate 101 are connected to the valve seat 102 through the respective sealing blocks 104. Figure 5 As shown, the arrangement of the sealing block 104 can ensure the sealing of the entire gate valve 10 and prevent the powder from leaking when passing through the gate valve 10 .

[0041] Preferably, the gas outlet 22 is provided with a control valve 220, and the control valve 220 is used to adjust the discharge amount of the gas in the transition pipe 2. In this embodiment, Figure 3 As shown, by adjusting the control valve 220 , the opening and closing degree of the gas outlet 22 can be controlled, so that the discharge amount of air and part of the atmosphere protection gas in the transition pipe 2 can be accurately adjusted.

[0042] Preferably, the control valve 220 includes a valve body 2201 and a valve handle 2202, wherein the valve handle 2202 is mounted on the valve body 2201. In this embodiment, since the valve handle 2202 is mounted on the valve body 2201, an operator can control the opening and closing of a valve (not shown) of the valve body 2201 by controlling the valve handle 2202, thereby achieving precise control of the air and a portion of the atmosphere protective gas in the transition duct 2.

[0043] Preferably, it further comprises a plurality of screws 11, the bottom of the lower hopper 1 is fixed to the upper powder valve 4 by the screws 11, the top of the transition pipe 2 is fixed to the upper powder valve 4 by the screws 11, the bottom of the transition pipe 2 is fixed to the lower powder valve 5 by the screws 11, and the top of the lower feeding pipe 3 is fixed to the lower powder valve by the screws 11. In this embodiment, Figure 2 As shown, the lower hopper 1, the upper powder valve 4, the transition pipe 2, the lower powder valve 5, and the lower pipe 3 are fixed sequentially from top to bottom by the screws 11. This ensures a tight fit and stability between the various components, thereby effectively reducing powder leakage between various parts. In addition, it also facilitates the installation and removal of the various components.

[0044] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A blanking mechanism with atmosphere protection, characterized in that: It includes a lower hopper, a transition pipe, a lower feed pipe, an upper powder feed valve and a lower powder feed valve; The bottom of the lower hopper is fixedly connected to the upper powder valve, the top of the transition pipe is fixedly connected to the upper powder valve, the bottom of the transition pipe is fixedly connected to the lower powder valve, the top of the lower pipe is fixedly connected to the lower powder valve, and the side wall of the transition pipe is provided with an air inlet and an air outlet, the air inlet is used to input atmosphere protection gas, and the air outlet is used to discharge the air in the transition pipe and output part of the atmosphere protection gas.

2. The blanking mechanism with atmosphere protection according to claim 1, characterized in that: It also includes two first material level meters, which are both arranged through the side wall of the transition pipe and are distributed up and down.

3. The blanking mechanism with atmosphere protection according to claim 1, characterized in that: It also includes two second material level meters, which are both arranged through the side walls of the lower hopper and are distributed up and down.

4. The blanking mechanism with atmosphere protection according to claim 1, characterized in that: The upper powder valve and the lower powder valve are both rotary valves, or the upper powder valve and the lower powder valve are both gate valves, or the upper powder valve is a rotary valve and the lower powder valve is a gate valve, or the upper powder valve is a gate valve and the lower powder valve is a rotary valve.

5. The blanking mechanism with atmosphere protection according to claim 4, characterized in that: The rotary valve comprises a motor and a valve core, wherein the valve core is connected to a driving end of the motor.

6. The blanking mechanism with atmosphere protection according to claim 4, characterized in that: The gate valve includes a gate plate, a valve seat and a cylinder. The cylinder is fixed to the valve seat. The gate plate is arranged in the valve seat so as to be movable left and right. The gate plate is installed at the driving end of the cylinder.

7. The blanking mechanism with atmosphere protection according to claim 6, characterized in that: The gate valve further comprises two sealing blocks, and the top surface and the bottom surface of the gate plate are respectively connected to the valve seat through the respective sealing blocks.

8. The blanking mechanism with atmosphere protection according to claim 1, characterized in that: The gas outlet is provided with a control valve, and the control valve is used to adjust the discharge amount of gas in the transition pipe.

9. The blanking mechanism with atmosphere protection according to claim 8, characterized in that: The control valve includes a valve body and a valve handle, and the valve handle is installed on the valve body.

10. The blanking mechanism with atmosphere protection according to claim 1, characterized in that: It also includes a plurality of screws, the bottom of the lower hopper is fixed to the upper powder valve by the screws, the top of the transition pipe is fixed to the upper powder valve by the screws, the bottom of the transition pipe is fixed to the lower powder valve by the screws, and the top of the lower pipe is fixed to the lower powder valve by the screws.

Images