Powder weighing and feeding device

Abstract

The utility model provides a powder weighing and feeding device. The powder weighing and feeding device comprises a support, a feeding assembly and a purging assembly. The support comprises a top plate and a bottom plate, and the bottom plate is provided with a channel hole and an annular weighing sensor. The material assembly comprises a feeding connector and a hopper, a containing hole is formed in the top face of the feeding connector, a connecting pipe is arranged on the bottom face of the feeding connector, the hopper is movably arranged in the channel hole, and a splicing ring groove used for containing the connecting pipe is formed in the top end of the hopper. The purging assembly comprises a purging connector, and the purging connector is arranged in the containing hole in a lifting mode. According to the powder weighing and feeding device disclosed by the utility model, a worker can conveniently weigh powder materials, attached materials can be cleaned, and the precision of a subsequent weighing result is improved.

Description

Technical Field

[0001] The utility model belongs to the field of welding material processing equipment, in particular to a powder material weighing and adding device. Background Art

[0002] Flux-cored welding wire, also known as powder-cored welding wire or tubular welding wire, is a common welding consumable. When processing flux-cored welding wire, workers need to first roll the steel strip into a U-shaped cross-section, then add the configured welding powder into the U-shaped steel strip, and then use a rolling mill to compact it, and finally draw it into products of different specifications.

[0003] In order to control the ratio of the components in the welding powder, the staff needs to weigh the materials before adding them. However, since the materials used to configure the welding powder are usually powdered materials, they are easy to adhere to the inner wall of the hopper during weighing. When the previous material is weighed and added, the material attached to the inner wall of the hopper will affect the weighing result of the next material, resulting in a difference between the actual addition amount of the next material and the preset addition amount, which in turn affects the configuration effect of the welding powder. Utility Model Content

[0004] In view of this, the utility model aims to provide a powder weighing and dosing device to solve the above technical problems.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A powder material weighing and dosing device, comprising:

[0007] A bracket, the bracket comprising a top plate and a bottom plate, the bottom surface of the top plate is connected to the top surface of the bottom plate through a connecting rod, a channel hole is provided on the bottom plate, and an annular weighing sensor is provided on the top of the bottom plate and is aligned with the channel hole;

[0008] A feed assembly, the feed assembly comprising a feed joint and a hopper; the feed joint is arranged between the top plate and the bottom plate, a receiving hole is arranged on the top surface of the feed joint, a connecting pipe is arranged on the bottom surface of the feed joint, the inner diameter of the receiving hole is smaller than the inner diameter of the connecting pipe, and the receiving hole is communicated with the connecting pipe; a feed connecting pipe is also arranged on the side wall of the feed joint, and the feed connecting pipe is communicated with the receiving hole; the hopper is movably arranged inside the channel hole, the inner diameter of the hopper is larger than the inner diameter of the receiving hole, a splicing ring groove for accommodating the connecting pipe is arranged on the top of the hopper, and a discharge pipe is arranged at the bottom end of the hopper; a connecting ring is also arranged on the outer side wall of the hopper, and the bottom surface of the connecting ring is in contact with the annular weighing sensor;

[0009] A purge assembly, wherein the purge assembly includes a purge joint, which is liftably arranged inside the accommodating hole, and the outer diameter of the purge joint is equal to the inner diameter of the accommodating hole; the purge joint includes a guide tube and a plugging head, the top of the plugging head is connected to the bottom end of the guide tube through a plurality of arc-shaped guide plates, an air inlet pipe is provided on the side wall of the guide tube, and an air outlet channel is provided between any two adjacent arc-shaped guide plates.

[0010] Furthermore, a flow guiding inner conical surface is provided at the bottom end of the flow guiding tube, and a flow guiding outer conical surface is provided at the top end of the plugging head.

[0011] Furthermore, the inner arc surface of the arc-shaped guide plate is tangent to the inner wall of the guide tube, and the outer arc surface of the arc-shaped guide plate is tangent to the outer wall of the guide tube.

[0012] Furthermore, a sealing ring is provided at the top of the hopper, the outer diameter of the sealing ring is smaller than the inner diameter of the splicing ring groove, and a sealing groove for accommodating the sealing ring is provided on the bottom surface of the feed joint.

[0013] Furthermore, a feed hole is provided on the side wall of the feed connector, a first end of the feed hole is connected to the accommodating hole, a second end of the feed hole is connected to the feed connecting pipe, and the first end of the feed hole is lower than the second end of the feed hole.

[0014] Furthermore, there are multiple feed pipes, and the multiple feed pipes are radially arranged around the axis of the feed connector.

[0015] Furthermore, the purge assembly also includes an electric telescopic rod, one end of which is connected to the top plate, and the other end of which is connected to the top surface of the purge joint.

[0016] Furthermore, a control valve is provided on the discharge pipe.

[0017] Compared with the prior art, the powder weighing and dosing device described in the utility model has the following advantages:

[0018] (1) The utility model discloses a powder weighing and dosing device, wherein the hopper is movably arranged below the feed connector, and a purge connector that can be raised and lowered is provided inside the receiving hole of the feed connector. When in use, the staff can introduce the powdered material into the hopper through the feed connector. Since a connecting ring is provided on the outer wall of the hopper, and the hopper can move axially inside the channel hole, the annular weighing sensor can measure the weight of the material entering the hopper, which is convenient for the staff to judge the amount of material added. After weighing, the staff can drive the purge connector down so that the air outlet channel is connected to the inside of the hopper, thereby driving the material in the hopper out of the device with the help of the purge airflow generated by the purge connector, and cleaning the inner wall of the hopper to prevent the material from adhering to the hopper, thereby improving the accuracy of the subsequent weighing results of the material. In addition, since the outer diameter of the purge connector is equal to the inner diameter of the receiving hole, when the air outlet channel is connected to the inside of the hopper, the guide tube can block the feed connector, thereby preventing the material in the feed connector from being affected by the purge airflow.

[0019] (2) The powder weighing and dosing device described in the utility model can guide the purge airflow leaving the air outlet channel through the arc-shaped guide plate, so that a vortex is formed inside the hopper, thereby improving the cleaning effect of the inner wall of the hopper. At the same time, the device can also guide the purge airflow in a vortex state through the cooperation of the guide inner conical surface and the guide outer conical surface, so that the purge airflow contacts the inner wall of the hopper in a tilted downward state, thereby further improving the cleaning effect of the purge airflow.

[0020] (3) The powder weighing and dosing device described in the utility model can block the gap between the hopper and the feed joint through the cooperation of the sealing ring and the sealing groove and the cooperation of the splicing ring groove and the connecting pipe, so as to prevent the powdered material inside the feed assembly from flowing outward along the splicing gap during the purging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the powder weighing and dosing device according to an embodiment of the utility model;

[0023] Figure 2 It is an exploded diagram of the powder weighing and dosing device described in the embodiment of the utility model;

[0024] Figure 3 It is a cross-sectional view of the purge assembly and the feed assembly according to the embodiment of the utility model;

[0025] Figure 4It is a cut-away internal view of the hopper according to an embodiment of the utility model;

[0026] Figure 5 This is a cut-away internal view of the feed connector according to an embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the flow guide pipe according to an embodiment of the utility model;

[0028] Figure 7 It is a schematic diagram of the top structure of the plugging head described in an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 11-top plate; 12-bottom plate; 121-channel hole; 122-annular weighing sensor; 13-connecting rod; 2-feed connector; 21-accommodating hole; 22-connecting pipe; 23-feed pipe; 24-feed hole; 25-sealing groove; 3-hopper; 31-joining ring groove; 32-discharge pipe; 33-connecting ring; 34-sealing ring; 41-guide pipe; 411-inlet pipe; 412-guide inner cone; 42-sealing head; 421-guide outer cone; 43-arc guide plate; 5-electric telescopic rod; 6-control valve. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] A powder weighing and dosing device, the structure of which can be Figure 1-Figure 7 In this embodiment, the powder weighing and dosing device includes: a bracket, a feeding assembly and a purge assembly, wherein the bracket is used to provide an installation and positioning basis for other components in the device, the feeding assembly is used to accommodate the material to be added and weigh the material, and the purge assembly is used to blow the material out of the device after the material is weighed and clean the feeding assembly to prevent the powdered material from adhering to the inner wall of the feeding assembly and affecting the weighing accuracy of the subsequent material.

[0036] Specifically, Figure 2 As shown, the bracket includes a top plate 11 and a bottom plate 12, wherein the bottom surface of the top plate 11 is connected to the top surface of the bottom plate 12 through a connecting rod 13, and a channel hole 121 is provided on the bottom plate 12. The feed assembly includes a feed connector 2 and a hopper 3, wherein the feed connector 2 is arranged between the top plate 11 and the bottom plate 12, and the hopper 3 is movably arranged inside the channel hole 121. The purge assembly includes a purge connector for guiding the airflow. Figure 4 and Figure 5 As shown, in order to facilitate the purge assembly to purge the inside of the feed assembly, a receiving hole 21 is provided on the top surface of the feed connector 2 in this embodiment, and the outer diameter of the purge connector is equal to the inner diameter of the receiving hole 21. In order to facilitate the material to enter the feed connector 2, a feed pipe 23 connected to the receiving hole 21 is provided on the side wall of the feed connector 2. In order to facilitate the material inside the feed connector 2 to enter the hopper 3, a connecting pipe 22 connected to the receiving hole 21 is also provided on the bottom surface of the feed connector 2, and the inner diameter of the receiving hole 21 is smaller than the inner diameter of the connecting pipe 22. Accordingly, the inner diameter of the hopper 3 should be larger than the inner diameter of the receiving hole 21, and a splicing ring groove 31 for accommodating the connecting pipe 22 is provided at the top of the hopper 3, and a discharge pipe 32 is provided at the bottom end of the hopper 3.

[0037] When adding powdery materials, the staff can connect the conveying pipe of the powdery materials with the feed pipe 23, so that the powdery materials enter the receiving hole 21 along the feed pipe 23. Since the two ends of the connecting pipe 22 are respectively connected with the receiving hole 21 and the hopper 3, the powdery materials in the receiving hole 21 will enter the hopper 3, and finally leave the device along the discharge pipe 32 and enter the subsequent processing equipment of the flux-cored welding wire.

[0038] Optionally, in order to improve the smoothness of the material inside the feed pipe 23 entering the receiving hole 21, a feed hole 24 may be provided on the side wall of the feed connector 2 in this embodiment. Figure 5 As shown, the first end of the feed hole 24 is connected to the receiving hole 21, the second end of the feed hole 24 is connected to the feed pipe 23, and the first end of the feed hole 24 should be lower than the second end of the feed hole 24. Due to the height difference between the two ends of the feed hole 24, the material inside the feed hole 24 will smoothly enter the receiving hole 21 under the action of gravity, thereby improving the efficiency of the material entering the receiving hole 21. At the same time, the height difference between the two ends of the feed hole 24 can also prevent the material from remaining inside the feed hole 24, ensuring that the material introduced into the feed connector 2 along the feed pipe 23 completely enters the receiving hole 21.

[0039] In addition, in order to facilitate the staff to introduce various types of materials into the device, multiple feed pipes 23 can be provided, and multiple feed pipes 23 are radially arranged around the axis of the feed connector 2. In actual work, multiple feed pipes 23 can be respectively connected to the conveying pipelines of various materials, so that the staff can complete the feeding of various materials through the device, thereby simplifying the number of equipment in the flux-cored wire processing system.

[0040] As an optional implementation of this embodiment, in order to conveniently control the timing of the material inside the device entering the flux-cored wire processing equipment, a control valve 6 can be provided on the discharge pipe 32. The staff can switch the on-off state of the control valve 6 according to the actual work progress to control the time node when the material leaves the device.

[0041] In order to facilitate the staff to judge the weight of the material entering the hopper 3, the present device is provided with an annular weighing sensor 122 on the top of the bottom plate 12 which is aligned with the channel hole 121, and a connecting ring 33 is provided on the outer wall of the hopper 3. After the assembly is completed, the bottom surface of the connecting ring 33 will contact the annular weighing sensor 122. Since the hopper 3 is movably arranged inside the channel hole 121, when the material enters the hopper 3, the hopper 3 will move downward along the axis direction of the channel hole 121, so that the gravity of the connecting ring 33 acts on the annular weighing sensor 122. The staff can record the reading of the annular weighing sensor 122 before the material enters the hopper 3, and record the reading of the annular weighing sensor 122 again after the material enters the hopper 3, so as to calculate the weight of the material according to the change of the reading, so as to control the actual dosage of the material.

[0042] In order to prevent the powdered material from adhering to the inner wall of the feed assembly, the device will deliver a purge airflow to the inside of the feed assembly through the purge assembly. Specifically, the purge assembly includes a purge joint, and the outer diameter of the purge joint is equal to the inner diameter of the receiving hole 21. Figure 6 and Figure 7 As shown, the purge joint includes a guide tube 41 and a plugging head 42, wherein the top end of the plugging head 42 is connected to the bottom end of the guide tube 41 through a plurality of arc-shaped guide plates 43, an air inlet pipe 411 is provided on the side wall of the guide tube 41, and an air outlet channel is provided between any two adjacent arc-shaped guide plates 43.

[0043] When it is necessary to introduce materials into the feed assembly, the purge assembly should move upward so that the plugging head 42 moves above the feed hole 24 to prevent the purge assembly from obstructing the process of the material entering the feed assembly. After the material is weighed, the purge assembly should move downward so that the air outlet channel is connected to the internal space of the hopper 3, and the feed hole 24 is blocked by the side wall of the guide tube 41. At this time, the gas entering the purge joint along the air inlet pipe 411 will enter the hopper 3 through the air outlet channel, thereby accelerating the speed of the material leaving the hopper 3 and cleaning the inner wall of the hopper 3. The material attached to the inner wall of the hopper 3 can fall off through the cleaning process, thereby preventing the device from affecting the accuracy of the subsequent weighing results due to the attachment of the material. At the same time, since the guide tube 41 can block the feed hole 24 during the purge process, it can prevent the purge airflow from entering the feed pipe 23 along the feed hole 24, thereby preventing other components in the device from being improperly affected by the purge work.

[0044] Optionally, in order to improve the purging effect of the purge airflow, the inner arc surface of the arc guide plate 43 in this embodiment should be tangent to the inner side wall of the guide tube 41, and the outer arc surface of the arc guide plate 43 should be tangent to the outer side wall of the guide tube 41. The arc guide plate 43 of the above shape can guide the flow direction of the purge airflow, so that the purge airflow forms a swirl inside the hopper 3. Compared with the common purging method, the purge airflow in the swirl state has a higher cleaning speed and better cleaning effect, thereby completing the cleaning work of the hopper 3 with high efficiency and quality.

[0045] In addition, the device may be provided with a flow guiding inner conical surface 412 at the bottom end of the flow guiding tube 41, and a flow guiding outer conical surface 421 at the top end of the plugging head 42. The cooperation between the flow guiding inner conical surface 412 and the flow guiding outer conical surface 421 enables the purge airflow to contact the inner wall of the hopper 3 in a state of tilting downward, thereby further improving the cleaning ability of the purge assembly.

[0046] Since there is a joint gap between the hopper 3 and the feed connector 2 in the present device, and the hopper 3 has the ability to move inside the channel hole 121, in order to prevent the material inside the feed assembly from escaping outward along the joint gap during the purge process, the present device may also be provided with a sealing ring 34 at the top of the hopper 3 and a sealing groove 25 on the bottom surface of the feed connector 2. Figure 4 and Figure 5 As shown, the outer diameter of the sealing ring 34 should be smaller than the inner diameter of the splicing ring groove 31. After the hopper 3 and the feed connector 2 are assembled, the sealing ring 34 will be inserted into the sealing groove 25. The cooperation between the sealing ring 34 and the sealing groove 25 and the cooperation between the connecting pipe 22 and the splicing ring groove 31 can increase the contact area between the hopper 3 and the feed connector 2, thereby reducing the probability of material escaping outward.

[0047] As another optional implementation of this embodiment, in order to facilitate the lifting and lowering of the purge joint, the purge assembly may further include an electric telescopic rod 5, and one end of the electric telescopic rod 5 is connected to the top plate 11, and the other end is connected to the top surface of the purge joint. When the purge joint needs to be lifted or lowered, the staff can control the electric telescopic rod 5 to shorten or lengthen, thereby reducing the difficulty of the purge joint movement and improving the automation of the device.

[0048] The effects of the above scheme are described below:

[0049] The present embodiment provides a powder weighing and dosing device, which can measure the weight of the material entering the hopper 3 through the annular weighing sensor 122, and can purge the inside of the hopper 3 through the purge assembly, thereby preventing the material from adhering and improving the accuracy of the subsequent weighing results of the material. Secondly, the present device can guide the flow direction of the purge airflow through the cooperation of the arc-shaped guide plate 43, the guide inner cone 412 and the guide outer cone 421, thereby improving the cleaning effect of the purge assembly. In addition, the present device can also block the splicing gap through the cooperation of the sealing ring 34, the sealing groove 25, the splicing ring groove 31 and the connecting pipe 22 to prevent the material in the present device from escaping to the outside.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder weighing and dosing device, characterized in that: include: A bracket, the bracket comprising a top plate (11) and a bottom plate (12), the bottom surface of the top plate (11) being connected to the top surface of the bottom plate (12) via a connecting rod (13), a channel hole (121) being provided on the bottom plate (12), and an annular weighing sensor (122) being provided on the top of the bottom plate (12) and being aligned with the channel hole (121); A feed assembly, the feed assembly comprising a feed connector (2) and a hopper (3); the feed connector (2) is arranged between a top plate (11) and a bottom plate (12); a receiving hole (21) is arranged on the top surface of the feed connector (2); a connecting pipe (22) is arranged on the bottom surface of the feed connector (2); the inner diameter of the receiving hole (21) is smaller than the inner diameter of the connecting pipe (22), and the receiving hole (21) is connected to the connecting pipe (22); a feed connecting pipe (23) is also arranged on the side wall of the feed connector (2) , and the feed pipe (23) is connected to the receiving hole (21); the hopper (3) is movably arranged inside the channel hole (121), the inner diameter of the hopper (3) is larger than the inner diameter of the receiving hole (21), a splicing ring groove (31) for accommodating the connecting pipe (22) is provided at the top of the hopper (3), and a discharge pipe (32) is provided at the bottom of the hopper (3); a connecting ring (33) is also provided on the outer side wall of the hopper (3), and the bottom surface of the connecting ring (33) is in contact with the annular weighing sensor (122); A purge assembly, the purge assembly comprising a purge joint, the purge joint being movably arranged inside a receiving hole (21), and the outer diameter of the purge joint being equal to the inner diameter of the receiving hole (21); the purge joint comprising a flow guide tube (41) and a plugging head (42), the top end of the plugging head (42) being connected to the bottom end of the flow guide tube (41) via a plurality of arc-shaped flow guide plates (43), an air inlet pipe (411) being provided on the side wall of the flow guide tube (41), and an air outlet channel being provided between any two adjacent arc-shaped flow guide plates (43).

2. A powder weighing and dosing device according to claim 1, characterized in that: The bottom end of the flow guide tube (41) is provided with a flow guide inner conical surface (412), and the top end of the plugging head (42) is provided with a flow guide outer conical surface (421).

3. A powder weighing and dosing device according to claim 1, characterized in that: The inner arc surface of the arc-shaped flow guide plate (43) is tangent to the inner side wall of the flow guide tube (41), and the outer arc surface of the arc-shaped flow guide plate (43) is tangent to the outer side wall of the flow guide tube (41).

4. A powder weighing and dosing device according to claim 1, characterized in that: A sealing ring (34) is provided at the top of the hopper (3), the outer diameter of the sealing ring (34) being smaller than the inner diameter of the splicing ring groove (31), and a sealing groove (25) for accommodating the sealing ring (34) is provided on the bottom surface of the feed joint (2).

5. A powder weighing and dosing device according to claim 1, characterized in that: A feed hole (24) is provided on the side wall of the feed connector (2), a first end of the feed hole (24) is connected to the receiving hole (21), a second end of the feed hole (24) is connected to the feed pipe (23), and the first end of the feed hole (24) is lower than the second end of the feed hole (24).

6. A powder weighing and dosing device according to claim 1, characterized in that: There are a plurality of feed pipes (23), and the plurality of feed pipes (23) are radially arranged on the circumferential side of the axis of the feed connector (2).

7. A powder weighing and dosing device according to claim 1, characterized in that: The purge assembly further comprises an electric telescopic rod (5), one end of which is connected to the top plate (11) and the other end of which is connected to the top surface of the purge joint.

8. A powder weighing and dosing device according to claim 1, characterized in that: The discharge pipe (32) is provided with a control valve (6).

Images