Mistake proofing device of metal powder screening equipment

Abstract

The utility model discloses a mistake proofing device of metal powder screening equipment, belongs to the technical field of mistake proofing structures, and is used for providing a device capable of avoiding valve opening sequence errors. A mistake proofing assembly comprises a fixed part which is fixedly arranged, the fixed part is connected with a movable part through a hinge, the movable part is located on the left side of the fixed part, and the movable part is located on the right side of the fixed part. A blocking plate is arranged on the left side of the movable part and suitable for interfering with the upper valve handle in the closed state, and a baffle is arranged on the right side of the movable part and suitable for preventing the lower valve handle from rotating in the closing direction. According to the utility model, the baffle plate positioned behind the handle of the upper valve and the baffle plate positioned in front of the handle of the lower valve are arranged on the rotatable movable part, so that only when the upper valve for controlling the discharge end of the screening device is closed, the movable part can relieve the limiting effect on the lower valve for controlling the feed end of the storage tank; and the problem of material leakage or air leakage caused by the fact that the valve below is closed firstly due to misoperation is effectively avoided.

Description

Technical Field

[0001] The present application relates to the technical field of error-proofing structures, and in particular to an error-proofing device for metal powder screening equipment. Background Art

[0002] In order to prevent metal powder from being oxidized by contact with air, a valve structure is usually installed at the discharge end of the metal powder screening equipment and the feed end of the storage tank. However, if the valve closing sequence is incorrect during the replacement of the storage tank, it may cause leakage of metal powder and protective gas, or cause the vacuum state inside the metal powder screening equipment to be destroyed, or even inhale impurities in the environment. Even if both valves are closed, it is still possible for metal powder to enter the conveying pipeline due to incorrect closing sequence, and contact with oxygen when the open end of the pipeline is exposed after the storage tank is unloaded, resulting in material waste. This is also a leakage. Summary of the invention

[0003] The purpose of the present application is to provide a device that can avoid errors in the valve opening sequence.

[0004] To achieve the above purpose, the present application provides an error-proofing device for metal powder screening equipment: it includes a working component and an error-proofing component that cooperate with each other, the working component includes a connected storage tank and a material pipe, the storage tank is located below the material pipe, an upper valve handle is provided on the front side of the material pipe, and a lower valve handle is provided on the right side of the storage tank, and the rotation axis of the lower valve handle is skewed and perpendicular to the rotation axis of the upper valve handle; the error-proofing component includes a fixed portion that is fixedly arranged, the fixed portion is connected to a movable portion by a hinge, the movable portion is located on the left side of the fixed portion, the movable portion has a baffle on the left side, which is suitable for interfering with the upper valve handle in a closed state, and the movable portion has a baffle on the right side, which is suitable for preventing the lower valve handle from rotating in a closing direction. Under the condition that the upper valve is not closed, the lower valve cannot be closed, and the restriction that the upper valve must be closed first can avoid leakage of material and air leakage at the discharge end of the metal powder screening equipment.

[0005] Preferably, the fixed part includes a connecting plate fixedly connected to the frame of the working component, the movable part includes a swinging plate, the right side of the swinging plate has a top plate extending backward, the baffle is located at the rear end of the top plate, and the blocking plate is located on the left side of the swinging plate, close to the upper valve handle.

[0006] As a preferred embodiment, the planes where the baffle plate and the top plate are located are parallel to the plane where the swing plate is located, and the movable part of the error-proofing component can be formed very regularly through stamping and bending.

[0007] Preferably, the left side of the connecting plate has a rib plate bent backwards, and the left side of the rib plate has a limit plate extending leftwards, and the limit plate is located above the top plate, and there is a height difference between the two, and they do not interfere with each other.

[0008] Preferably, a clearance groove is formed between the upper side of the baffle and the left side of the swing plate, suitable for the upper valve handle in the closing direction to pass through, and the upper side of the baffle also has a support plate extending backwards to improve the deformation resistance of the baffle.

[0009] Preferably, the hinge comprises a first hinge plate fixedly connected to the connecting plate, and a second hinge plate fixedly connected to the swinging plate, the first hinge plate and the second hinge plate are rotatably connected via a hinge shaft, and the hinge shaft is located between the left side surface of the connecting plate and the right side surface of the swinging plate, so that the hinge will be more stable when moving.

[0010] Preferably, the material pipe comprises a tube body, the outer side surface of the tube body has a flange fixedly connected to the frame of the working component, the outer side surface of the tube body also has a coaxial upper connecting plate, the rotating cylinder of the upper valve handle extends from the front side surface of the tube body to the front edge of the upper connecting plate, and the upper valve handle is suitable for controlling the on-off of the internal channel of the tube body to ensure that metal powder can pass through, and prevent air from passing through when metal powder is not required to pass through.

[0011] Preferably, the main part of the storage tank is a tank body, the upper end of the tank body is provided with a material receiving pipe, the outer side surface of the material receiving pipe is provided with a coaxial lower connecting plate, the rotating cylinder of the lower valve handle extends from the right side surface of the material receiving pipe to the side edge of the lower connecting plate, and the lower valve handle is suitable for controlling the on-off of the internal channel of the material receiving pipe, and also allows metal powder to pass through when opened, and prevents air from passing through when closed.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] (1) By arranging a baffle plate located behind the upper valve handle and a baffle plate located in front of the lower valve handle on the rotatable movable part, the movable part can release the restrictive effect on the lower valve controlling the feed end of the storage tank only after the upper valve controlling the discharge end of the screening device is closed, thereby effectively avoiding the problem of material leakage or air leakage caused by closing the lower valve first due to erroneous operation;

[0014] (2) The design has a simple structure, is easy to operate, has good stability, occupies little space, is highly compatible with metal powder screening equipment, and has relatively low configuration and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a first stereoscopic schematic diagram of the configuration state of the error-proofing device of the working component (1).

[0016] Figure 2 It is a second stereoscopic schematic diagram of the configuration state of the error-proofing device of the working component (1).

[0017] Figure 3 It is a three-dimensional schematic diagram of the independent state of the error-proofing device of the working component (1).

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing part of the error-proofing device of the working component (1).

[0019] Figure 5 This is a first view of the three-dimensional structure of the movable part of the error-proofing device of the working component (1).

[0020] Figure 6 This is a second view of the three-dimensional structure of the movable part of the error-proofing device of the working component (1).

[0021] Figure 7 A three-dimensional layout diagram of a handle structure adapted for the error-proofing device on a metal powder screening device.

[0022] In the figure: 1. working component; 110. storage tank; 111. tank body; 112. material receiving pipe; 113. lower connecting plate; 114. lower valve handle; 120. material pipe; 121. pipe body; 122. flange; 123. upper connecting plate; 124. upper valve handle; 2. error-proofing component; 210. fixed part; 211. connecting plate; 212. rib plate; 213. limit plate; 220. movable part; 221. swing plate; 222. baffle plate; 223. support plate; 224. make way groove; 225. top plate; 226. baffle plate; 230. hinge; 231. first hinge plate; 232. second hinge plate; 233. hinge shaft. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0027] like Figure 1-7 The error-proofing device of the metal powder screening equipment shown in the figure comprises a working component 1 and an error-proofing component 2 that cooperate with each other. The function of the error-proofing component 2 is to prevent the working component 1 from being operated in a wrong order. The working component 1 comprises a connected storage tank 110 and a material pipe 120. Usually, the storage tank 110 is located below the material pipe 120. The material pipe 120 is actually a discharge end pipe of the metal powder screening equipment. An upper valve handle 124 is provided on the front side of the material pipe 120. The main part of the material pipe 120 is a pipe body 121. The outer side of the body 121 has a flange 122, which is used to be fixedly connected to the frame of the working component 1 through bolts and other connecting parts. The outer side of the tube body 121 also has a coaxial upper connecting plate 123. The rotating cylinder of the upper valve handle 124 extends from the front side of the tube body 121 to the front edge of the upper connecting plate 123, so that the upper valve handle 124 can rotate around the axis in the front and rear directions. The upper valve handle 124 is used to control the on-off of the internal channel of the tube body 121, that is, to control whether the discharge end of the metal powder screening equipment continues to discharge metal powder.

[0028] A lower valve handle 114 is provided on the right side of the storage tank 110. Both the lower valve handle 114 and the upper valve handle 124 are closed clockwise and opened counterclockwise. Therefore, in order to configure a more simple error-proofing component 2, the rotation axis of the lower valve handle 114 and the rotation axis of the upper valve handle 124 are skewed and perpendicular. The main body of the storage tank 110 is a hollow tank body 111 for storing metal powder. The upper end of the tank body 111 is provided with a material receiving pipe 112. The outer side surface of the material receiving pipe 112 is provided with a coaxial lower connecting plate 113. The lower connecting plate 113 and the upper connecting plate 123 are connected by a screw. The bolts and other connectors are tightened to align and seal the receiving pipe 112 with the tube body 121, so that the metal powder will not be exposed to air and oxidized when entering the storage tank 110 from the material pipe 120. The rotating cylinder of the lower valve handle 114 extends from the right side of the receiving pipe 112 to the edge of one side of the lower connecting plate 113, that is, the lower valve handle 114 will rotate around the axis in the left and right directions. The lower valve handle 114 is used to control the on-off of the internal channel of the receiving pipe 112. Before the receiving pipe 112 is disconnected from the tube body 121, the lower valve handle 114 must be rotated to a closed state.

[0029] The error-proofing component 2 includes a fixed portion 210, which is connected to a movable portion 220 via a hinge 230. The movable portion 220 is usually located on the left side of the fixed portion 210. The fixed portion 210 includes a connecting plate 211 fixedly connected to the frame of the working component 1, and the movable portion 220 includes a swinging plate 221. The hinge 230 includes a first hinge plate 231 fixedly connected to the connecting plate 211, and a second hinge plate 232 fixedly connected to the swinging plate 221. The first hinge plate 231 and the second hinge plate 232 are rotatably connected via a hinge shaft 233. The hinge shaft 233 is located between the left side surface of the connecting plate 211 and the right side surface of the swinging plate 221. Since the hinge shaft 233 is usually set to be vertical, the swinging plate 221 can swing back and forth in the horizontal direction.

[0030] The right side of the movable part 220 is provided with a baffle 226, which is actually the right side of the swing plate 221 having a top plate 225 extending backwards, and the baffle 226 is located at the rear end of the top plate 225, very close to the lower valve handle 114, and the plane where the baffle 226 is located is parallel to the plane where the swing plate 221 is located, just preventing the lower valve handle 114 from rotating in the closing direction, and the left side of the connecting plate 211 is also provided with a rib plate 212 bent backwards, and the left side of the rib plate 212 is provided with a limit plate 213 extending leftwards, so the limit plate 213 is also parallel to the connecting plate 211, and is used to limit the maximum swing range of the swing plate 221, when the back side of the swing plate 221 is in contact with the limit plate 213, the swing plate 221 will be in the same plane as the connecting plate 211, and usually, the limit plate 213 will be located above the top plate 225, and the two are respectively formed by stamping and bending different alloy plates.

[0031] The movable part 220 has a baffle 222 on the left side. In fact, the baffle 222 is located on the left side of the swing plate 221. The baffle 222 is usually in the same plane as the swing plate 221, and is used to interfere with the upper valve handle 124 in the closed state. A clearance groove 224 is formed between the upper side edge of the baffle 222 and the left side surface of the swing plate 221, so that the upper valve handle 124 in the closing direction can pass through. The upper side edge of the baffle 222 also has a support plate 223 extending backwards, which can improve the bending and twisting resistance of the baffle 222.

[0032] Working principle: The opening direction of the two valve handles is the vertical direction parallel to the material pipe 120, and the closing direction is the first horizontal position after clockwise rotation. The state in which the error-proofing device can work is: the baffle 222 is located behind the upper valve handle 124 in the vertical direction, and the baffle 226 is located in front of the lower valve handle 114. If you want to remove the storage tank 110, you must first rotate the upper valve handle 124 clockwise to make it in the horizontal direction. At this time, the discharge end of the metal powder screening equipment will be blocked, and there will be no air leakage or material leakage, and the baffle 222 will not block The entire movable portion 220 can be opened outward, and the top plate 225 will synchronously move the baffle plate 226 away from the lower valve handle 114 in a counterclockwise direction when viewed from above, so that the open end of the storage tank 110 will be blocked and will not leak. Finally, the bolted connection between the upper connecting plate 123 and the lower connecting plate 113 can be removed to remove the storage tank 110 filled with materials; the operation sequence for replacing a new storage tank 110 is the opposite of the above steps, which can effectively avoid the problem of air leakage and material leakage caused by forgetting to close the valve at the discharge end of the screening equipment when replacing the storage tank 110.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An error-proofing device for metal powder screening equipment, comprising a working component (1) and an error-proofing component (2) that cooperate with each other, characterized in that: The working assembly (1) comprises a storage tank (110) and a material pipe (120) connected to each other, the storage tank (110) being located below the material pipe (120), an upper valve handle (124) being arranged on the front side of the material pipe (120), and a lower valve handle (114) being arranged on the right side of the storage tank (110), wherein the rotation axis of the lower valve handle (114) is skewed and perpendicular to the rotation axis of the upper valve handle (124); The error-proofing component (2) includes a fixed portion (210) which is connected to a movable portion (220) via a hinge (230). The movable portion (220) is located on the left side of the fixed portion (210). The movable portion (220) has a baffle (222) on the left side, which is suitable for interfering with the upper valve handle (124) in a closed state. The movable portion (220) has a baffle (226) on the right side, which is suitable for preventing the lower valve handle (114) from rotating in a closing direction.

2. The error-proofing device for metal powder screening equipment according to claim 1, characterized in that: The fixed portion (210) comprises a connecting plate (211) fixedly connected to a frame of the working assembly (1); the movable portion (220) comprises a swing plate (221); the right side of the swing plate (221) comprises a top plate (225) extending backwards; the baffle plate (226) is located at the rear end of the top plate (225); and the blocking plate (222) is located at the left side of the swing plate (221).

3. The error-proofing device for metal powder screening equipment according to claim 2, characterized in that: The planes where the baffle plate (222) and the top plate (225) are located are parallel to the plane where the swing plate (221) is located.

4. The error-proofing device for metal powder screening equipment according to claim 3, characterized in that: The left side of the connecting plate (211) is provided with a rib edge plate (212) bent backwards, and the left side of the rib edge plate (212) is provided with a limit plate (213) extending leftwards, and the limit plate (213) is located above the top plate (225).

5. The error-proofing device for metal powder screening equipment according to claim 4, characterized in that: A clearance groove (224) is formed between the upper side of the baffle (222) and the left side of the swing plate (221), suitable for allowing the upper valve handle (124) in the closing direction to pass through, and the upper side of the baffle (222) also has a supporting plate (223) extending backwards.

6. The error-proofing device for metal powder screening equipment according to any one of claims 2 to 5, characterized in that: The hinge (230) comprises a first hinge plate (231) fixedly connected to the connecting plate (211), and a second hinge plate (232) fixedly connected to the swinging plate (221); the first hinge plate (231) and the second hinge plate (232) are rotatably connected via a hinge shaft (233); and the hinge shaft (233) is located between the left side surface of the connecting plate (211) and the right side surface of the swinging plate (221).

7. The error-proofing device for metal powder screening equipment according to any one of claims 1 to 5, characterized in that: The material pipe (120) comprises a pipe body (121), the outer side surface of the pipe body (121) comprises a flange (122) fixedly connected to the frame of the working assembly (1), the outer side surface of the pipe body (121) also comprises a coaxial upper connecting plate (123), the rotating cylinder of the upper valve handle (124) extends from the front side surface of the pipe body (121) to the front edge of the upper connecting plate (123), and the upper valve handle (124) is suitable for controlling the opening and closing of the internal channel of the pipe body (121).

8. The error-proofing device for metal powder screening equipment according to claim 7, characterized in that: The main part of the storage tank (110) is a tank body (111), the upper end of the tank body (111) is provided with a material receiving pipe (112), the outer side surface of the material receiving pipe (112) is provided with a coaxial lower connecting plate (113), the rotating cylinder of the lower valve handle (114) extends from the right side surface of the material receiving pipe (112) to the side edge of the lower connecting plate (113), and the lower valve handle (114) is suitable for controlling the opening and closing of the internal channel of the material receiving pipe (112).

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