Weighing device for powder mill

Abstract

A weighing device for a powder mill comprises a rotary screen device, a discharging device, a feeding device, a finished product discharging device, a finished product box and an overall weighing device, and a pneumatic butterfly valve is arranged in a primary discharging pipe of the discharging device; the feeding device comprises a transverse material passing pipe, a weighing assembly, a material pushing assembly, a material containing assembly and a longitudinal discharging pipe, a lifting table and a supporting table are further arranged in the transverse material passing pipe, the weighing assembly is embedded in the lifting table, the material containing assembly is hinged to the telescopic end of the material pushing assembly, the material containing assembly is matched with the supporting table, and the longitudinal discharging pipe is arranged on the supporting table. Under the condition that the material containing assembly is separated from the supporting table, the material containing assembly rotates in the preset direction, and the material pushing assembly drives the material containing assembly to stretch out and retract back; and the finished product box corresponds to the finished product discharging device, so that the weighing error is effectively avoided in the weighing process of the finished powder coating in the powder coating crushing process, and meanwhile, the working efficiency is also improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder coating production equipment, in particular to a weighing device for a powder grinding machine. BACKGROUND

[0002] Powder coating is a solid powder synthetic resin coating composed of solid resin and pigment, filler and additive, etc. Unlike ordinary solvent-based coatings and water-based coatings, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film forming and low energy consumption.

[0003] In the process of powder coating crushing, the finished powder coating needs to be weighed. In the prior art, the finished powder coating is directly dropped into the finished product box after passing through the pneumatic butterfly valve. Since the entire weight of the finished powder coating directly falls vertically, it has a considerable impact force, which causes a great error in the weighing data of the weighing device. In addition, manual adjustment of the weighing is not efficient and is prone to human error. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides a weighing device for a powder grinding machine, which effectively avoids weighing errors in the weighing process of the finished powder coating in the process of powder coating crushing, and improves the work efficiency.

[0005] To achieve the foregoing object, the present application adopts the following technical solutions:

[0006] A weighing device for a powder grinding machine, characterized in that it comprises

[0007] A rotary screen device;

[0008] A discharging device connected to the rotary screen device, the discharging device comprising a conical discharging assembly and a primary discharging pipe connected to the conical discharging assembly, the interior of the primary discharging pipe being provided with a pneumatic butterfly valve;

[0009] The feeding device is connected to the discharging device, and comprises a transverse passing pipe, a weighing assembly arranged inside the transverse passing pipe, a pushing assembly connected to the inside of the transverse passing pipe, a containing assembly hinged to the pushing assembly, and a longitudinal discharging pipe connected to the transverse passing pipe.

[0010] The finished product discharging device is connected to the discharging device and the feeding device.

[0011] The finished product box corresponds to the finished product discharging device.

[0012] The whole weighing device is connected to the finished product box.

[0013] In some optional embodiments, the front end of the containing assembly is arranged in an arc shape.

[0014] In some optional embodiments, the telescopic end of the pushing assembly is provided with a hinged seat, and the containing assembly is provided with a hinge joint, which is in cooperation with the hinged seat.

[0015] In some optional embodiments, the height of the lifting table is higher than that of the supporting table, and the height difference is L, 1mm < L < 10mm.

[0016] In some optional embodiments, the weighing assembly comprises a weighing support and a weight sensing mechanism connected to the weighing support.

[0017] In some optional embodiments, there is a gap between the weight sensing mechanism and the weighing support in the transverse direction.

[0018] In some optional embodiments, the pushing assembly is fixed to the outer side wall of the C end of the transverse passing pipe, the telescopic end of the pushing assembly penetrates through the C end of the transverse passing pipe, and the telescopic end of the pushing assembly can freely extend and retract inside the transverse passing pipe.

[0019] In some optional embodiments, the containing assembly only contacts the weight sensing mechanism during the weighing process.

[0020] In some alternative embodiments, the overall weighing device is connected to the bottom of the finished product box.

[0021] In some alternative embodiments, the material containing assembly is in the shape of a square dustpan.

[0022] The weighing device for a powder grinder provided by the application has the following beneficial effects:

[0023] In the technical scheme adopted by the application, the weighing device for a powder grinder, the feeding device is connected to the rotary screen device, the initial feeding pipe in the feeding device is connected to the conical feeding assembly, and the inside of the initial feeding pipe is provided with a pneumatic butterfly valve; the feeding device is connected to the feeding device, the weighing assembly in the feeding device is arranged in the inside of the horizontal material passing pipe, the material pushing assembly is also connected to the inside of the horizontal material passing pipe, the material containing assembly is hingedly connected to the material pushing assembly, the vertical feeding pipe is connected to the horizontal material passing pipe, the sidewall of the horizontal material passing pipe is provided with a material inlet, the material inlet is in communication with the conical feeding assembly, the inside of the horizontal material passing pipe is further provided with a lifting platform and a supporting platform, the lifting platform is connected to the supporting platform, the weighing assembly is embedded in the inside of the lifting platform, the material pushing assembly is fixed to the C end of the horizontal material passing pipe, the material containing assembly is hingedly connected to the telescopic end of the material pushing assembly, the material containing assembly cooperates with the supporting platform, and the material containing assembly rotates in a preset direction when the material containing assembly is separated from the supporting platform, the material pushing assembly drives the material containing assembly to extend and retract; the finished product feeding device is connected to the feeding device and the feeding device; the finished product box corresponds to the finished product feeding device; and the overall weighing device is connected to the finished product box, which effectively avoids weighing errors in the weighing process of the finished product powder coating in the powder coating crushing process and improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0025] Figure 1 is a structural schematic diagram of a weighing device for a powder grinder according to the application;

[0026] Figure 2 is a partial structural diagram of a feeding device in a weighing device for a powder grinder according to the application;

[0027] Figure 3 is a perspective view of a horizontal material passing pipe in a weighing device for a powder grinder according to the application;

[0028] Figure 4 is a sectional view of the horizontal material passing pipe from another perspective in a weighing device for a powder grinder according to the application;

[0029] Figure 5is a partial structural view of a lifting platform and a supporting platform in a weighing device of a powder grinder;

[0030] Figure 6 is a sectional view of another perspective of a transverse material passing pipe in a weighing device of a powder grinder;

[0031] Figure 7 is a partial structural view of a lifting platform in a weighing device of a powder grinder;

[0032] Figure 8 is Figure 3 is an enlarged view at circle A shown in the figure;

[0033] Figure 9 is Figure 7 is an enlarged view at circle B shown in the figure.

[0034] Reference signs:

[0035] 10, rotary screen device;

[0036] 20, discharging device; 21, conical discharging assembly; 22, initial discharging pipe; 221, pneumatic butterfly valve;

[0037] 30, feeding device; 31, transverse material passing pipe; 31A, feeding port; 311, lifting platform; 312, supporting platform; 32, weighing assembly; 321, weighing support; 322, weight sensing mechanism; 33, pushing assembly; 331, hinged seat; 34, material containing assembly; 34A, arc shape; 341, hinged joint; 35, longitudinal discharging pipe;

[0038] 40, finished product discharging device;

[0039] 50, finished product box;

[0040] 60, integral weighing device. DETAILED DESCRIPTION

[0041] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings and examples, and through the content recorded in the present description, those skilled in the art can clearly and completely understand the technical solutions of the present application, the technical problems solved, and the technical effects produced. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, in order to facilitate the description, only the parts related to the present application are shown in the drawings.

[0042] It should be noted that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content described in the specification, so that those skilled in the art can understand and read, and do not have technical substantial significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, shall fall within the scope of the technical content disclosed by the present application.

[0043] The cited words such as "first", "second", "the" and the like do not represent a quantity limitation, and can represent a single or plural number. The terms "include", "contain", "have" and any variants thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device containing a series of steps or modules is not limited to the listed steps or units, but can also include steps or units not listed, or can also include other steps or units inherent to the process, method, product or device. The words such as "connection", "connection", "coupling" and the like involved in the present application are not limited to physical or mechanical connection, but can also include direct or indirect electrical connection.

[0044] It should also be noted that the longitudinal section corresponding to the embodiment of the present application can be a front view direction section, the transverse section can be a right view direction section, and the horizontal section can be an upper view direction section.

[0045] In addition, the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0046] Reference Figure 1 , Figure 1 is a structural schematic diagram of a weighing device for a powder grinding machine. As Figure 1 shown, a weighing device for a powder grinding machine comprises a rotary screen device 10, a discharging device 20 connected to the rotary screen device 10, a feeding device 30 connected to the discharging device 20, a finished product discharging device 40 connected to the discharging device 20 and the precise feeding device 30, a finished product box 50 and an overall weighing device 60 connected to the finished product box 50.

[0047] Continuing to refer to Figure 1 , and referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 2 is a partial structure diagram of a feeding device in a weighing device for a powder grinding machine, Figure 3is a perspective view of a transverse material passing pipe in a weighing device for a powder grinder, Figure 4 is a sectional view of another perspective view of a transverse material passing pipe in a weighing device for a powder grinder, Figure 5 is a partial structural view of a lifting table and a supporting table in a weighing device for a powder grinder, Figure 6 is a sectional view of another perspective view of a transverse material passing pipe in a weighing device for a powder grinder. As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown, the feeding device 20 includes a conical feeding assembly 21 and an initial feeding pipe 22 connected to the conical feeding assembly 21, and the inside of the feeding pipe is provided with a pneumatic butterfly valve 221. The feeding device 30 is connected to the conical feeding assembly 21, and the feeding device 30 includes a transverse material passing pipe 31, a weighing assembly 32 arranged on the transverse material passing pipe 31, a pushing assembly 33 connected to the transverse material passing pipe 31, a material containing assembly 34 hinged to the pushing assembly 33, and a longitudinal feeding pipe 35 connected to the transverse material passing pipe 31. The lateral wall of the transverse material passing pipe 31 is provided with a material inlet 31A which is in communication with the conical feeding assembly 21, and the inside of the transverse material passing pipe 31 is further provided with a lifting table 311 and a supporting table 312. The lifting table 311 is connected to the supporting table 312, and the height of the lifting table 311 is higher than that of the supporting table 312, and the height difference is L, 1mm < L < 10mm, so as to reduce the friction between the material containing assembly 34 and the supporting table 312 during the pushing of the material containing assembly 34 by the pushing assembly 33.

[0048] With reference to Figure 4 , with reference to Figure 7 , Figure 7 is a partial structural view of a lifting table in a weighing device for a powder grinder. As shown in Figure 4 and Figure 7 , the weighing assembly 32 is embedded in the inside of the lifting table 311, and the weighing assembly 32 includes a weighing bracket 321 and a weight sensing mechanism 322 connected to the weighing bracket 321. There is a gap between the weight sensing mechanism 322 and the weighing bracket 321 in the transverse direction, so as to facilitate the normal operation of the weight sensing mechanism 322 and avoid interference of the weighing bracket 321 to the weight sensing mechanism 322. The pushing assembly 33 is fixed to the C end of the material passing pipe, specifically, the pushing assembly 33 is fixed to the outer lateral wall of the C end of the transverse material passing pipe 31, the telescopic end of the pushing assembly 33 penetrates the C end of the material passing pipe, and the telescopic end of the pushing assembly 33 can freely extend and retract in the inside of the material passing pipe.

[0049] With reference to Figure 1 , with reference to Figure 8 and Figure 9 ,Figure 8 is Figure 3 the enlarged view at circle A shown in FIG. 3, Figure 9 is Figure 7 the enlarged view at circle B shown in FIG. 3. As shown in FIG. 3, Figure 1 , Figure 8 and Figure 9 , the material containing assembly 34 is hinged to the telescopic end of the material pushing assembly 33, specifically, the telescopic end of the material pushing assembly 33 is provided with a hinge seat 331, and the material containing assembly 34 is provided with a hinge joint 341, the hinge joint 341 and the hinge seat 331 are matched with each other to realize the mutual hinge of the material containing assembly 34 and the material pushing assembly 33, the material containing assembly 34 is matched with the supporting table 312, and when the material containing assembly 34 is separated from the supporting table 312, the material containing assembly 34 rotates along the preset direction to pour the finished product powder coating with completed weighing into the longitudinal discharging pipe 35, the material pushing assembly 33 drives the material containing assembly 34 to move out and retract, at the same time, the material containing assembly 34 only contacts with the weight sensing mechanism 322 during the weighing process, and does not contact with the weighing support 321, so as to avoid that the weighing support 321 supports the material containing assembly 34 during the weighing process, and causes the inaccurate weighing data, in addition, the front end of the material containing assembly 34 is provided with an arc 34A to avoid the interference caused by the gap between the transverse weight sensing mechanism 322 and the weighing support 321. Here, the shape of the material containing assembly 34 is a square dustpan shape, so as to facilitate the pouring of the finished product powder coating during the pouring process, and the position of the material containing assembly 34 placed on the weighing assembly 32 is the initial position. The finished product discharging device 40 corresponds to the finished product box 50, and the overall weighing device 60 is connected to the bottom of the finished product box 50.

[0050] Here, the blanking device 20 is connected to the rotary screen device 10, the initial blanking pipe 22 in the blanking device 20 is connected to the conical blanking assembly 21, the inside of the initial blanking pipe 22 is provided with a pneumatic butterfly valve 221; the feeding device 30 is connected to the conical blanking assembly 21 in the blanking device 20, the weighing assembly 32 in the feeding device 30 is arranged in the inside of the transverse material passing pipe 31, the pushing assembly 33 is also connected to the inside of the transverse material passing pipe 31, the material containing assembly 34 is hinged to the pushing assembly 33, the longitudinal blanking pipe 35 is connected to the transverse material passing pipe 31, the side wall of the transverse material passing pipe 31 is provided with a material inlet 31A, the material inlet 31A is communicated with the conical blanking assembly 21, and the inside of the transverse material passing pipe 31 is also provided with a lifting table 311 and a supporting table 312, the lifting table 311 is connected to the supporting table 312, the weighing assembly 32 is embedded in the inside of the lifting table 311, the pushing assembly 33 is fixed to the C end of the transverse material passing pipe 31, the material containing assembly 34 is hinged to the telescopic end of the pushing assembly 33, the material containing assembly 34 cooperates with the supporting table 312, and the material containing assembly 34 rotates in a preset direction when it is separated from the supporting table 312, the pushing assembly 33 drives the material containing assembly 34 to move outward and retract; the finished product blanking device 40 connected to the blanking device 20 and the feeding device 30; the finished product box 50 corresponds to the finished product blanking device 40; the overall weighing device 60 connected to the finished product box 50, which realizes effective avoidance of weighing error in the weighing process of the finished product powder coating in the powder coating crushing process, and also improves work efficiency.

[0051] In order to facilitate understanding, the working principle of the present application is further described as follows: the weighing device for the powder grinder, first, a parameter smaller than the target weight is set for the weighing assembly 32, the parameter value is weighed by the feeding mechanism, and finally the weighing value of the overall weighing device reaches the required powder coating weight value, in some optional embodiments, the final target value is set to 25KG, the parameter directly blanked by the conical blanking assembly 21, the initial blanking pipe 22 and the pneumatic butterfly valve 221 is set to 24.7KG, and the remaining 300G is completed by the feeding device 30, the specific steps are that the coating powder flows into the finished product box 50 through the pneumatic butterfly valve 221, under the weighing of the overall weighing device 60, when the coating powder reaches 24.7KG, the overall weighing device 60 transmits a signal to the external control unit, and after the control unit controls the pneumatic butterfly valve 221 to close, the control unit continues to control the feeding device 30 to start, and 300G of coating powder is accurately supplemented into the finished product box 50 through the feeding device 30, so that the weighing value of the overall weighing device 60 reaches 25KG, and finally 25KG of powder coating is obtained;

[0052] The process of the feeding device 30 to obtain 300G coating powder is that, first, the feeding device 30 is started by the external control device, the material is weighed by the weighing assembly 32 after falling into the material containing assembly 34 through the flow control device (not shown in the figure) arranged at the inlet 31A of the feeding device 30, and when the weighing value of the coating powder reaches or approaches 300G, the weighing assembly 32 transmits a signal to the external control unit, the control unit controls the flow control device to stop discharging, then the external control unit transmits a signal to the pushing assembly 33, the pushing assembly 33 drives the material containing assembly 34 to move towards the longitudinal discharging pipe 35, and the material containing assembly 34 is flipped in the preset direction under the action of the hinge seat 331 and the hinge joint 341, so that the coating powder is poured into the finished product box 50 through the finished product discharging device 40, that is, the feeding of the feeding device 30 is completed. It should be noted that the worker can judge whether the flow control device stops discharging when the weighing value of the weighing assembly 32 reaches 300G or approaches 300G according to the actual situation, if there is slight discharging during the closing process of the flow control device, the flow control device can be controlled to stop discharging when the weighing value approaches 300G, if there is no slight discharging, the flow control device can be controlled to stop discharging when the weighing value of the weighing assembly 32 reaches 300G, which effectively improves the production efficiency and the stability of the product.

[0053] Although the present application has been described and illustrated with reference to the particular embodiments, the descriptions and illustrations of these embodiments are not limiting and are intended solely for purposes of exemplification, where those skilled in the art can readily devise variations and equivalents without departing from the true spirit and scope of the application as defined by the appended claims. The illustrations depicted can not be drawn to scale. There can be variations to the techniques described in the present application, and there can be variations to the figures that are not specifically described herein. Other embodiments of the present application can be disclosed. The specification and drawings should be considered as illustrative only and not restrictive in character. Modifications can be made by those skilled in the art to adapt a particular situation, material, composition of matter, process or process actuation to the purpose, spirit and scope of the present application. All such modifications are considered within the scope of the claims appended hereto. Although the methods disclosed herein have been described with reference to particular sequences for performing certain operations, it will be understood that the sequences can be altered and still be in accordance with the teachings of the application without departing from the scope of the present application. Accordingly, unless specifically indicated herein, the order and grouping of operations are not limiting.

Claims

1. A weighing device for a powder mill, characterized in that, The application relates to a rotary screen device (10); A feeding device (20) connected to the rotary screen device (10), wherein the feeding device (20) comprises a conical feeding assembly (21) and an initial feeding pipe (22) connected to the conical feeding assembly (21), and the initial feeding pipe (22) is internally provided with a pneumatic butterfly valve (221); A feeding device (30) connected to the feeding device (20), wherein the feeding device (30) comprises a transverse feeding pipe (31), a weighing assembly (32) arranged in the transverse feeding pipe (31), a pushing assembly (33) connected to the transverse feeding pipe (31), a material containing assembly (34) hingedly connected to the pushing assembly (33), and a longitudinal feeding pipe (35) connected to the transverse feeding pipe (31), the transverse feeding pipe (31) is provided with an inlet (31A) on the side wall, the inlet (31A) is communicated with the conical feeding assembly (21), and the transverse feeding pipe (31) is further provided with a lifting table (311) and a supporting table (312), the lifting table (311) is connected with the supporting table (312), the weighing assembly (32) is embedded in the lifting table (311), the pushing assembly (33) is fixed to the C end of the transverse feeding pipe (31), the material containing assembly (34) is hingedly connected to the telescopic end of the pushing assembly (33), the material containing assembly (34) is matched with the supporting table (312), and the material containing assembly (34) rotates in a preset direction when the material containing assembly (34) is separated from the supporting table (312), the pushing assembly (33) drives the material containing assembly (34) to extend and retract; A finished product feeding device (40) connected to the feeding device (20) and the feeding device (30); A finished product box (50) corresponding to the finished product feeding device (40); An overall weighing device (60) connected to the finished product box (50). The front end of the material containing assembly (34) is provided with an arc (34A).

2. The weighing device for a powder mill according to claim 1, characterized in that, The telescopic end of the pushing assembly (33) is provided with a hinged seat (331), and the material containing assembly (34) is provided with a hinge joint (341), and the hinge joint (341) is matched with the hinged seat (331).

3. A weighing device for a powder mill according to claim 2, characterized in that The height of the lifting table (311) is higher than that of the supporting table (312), and the height difference is L, 1mm < L < 10mm.

4. The weighing device for a powder mill according to claim 1 or 3, characterized in that, The weighing assembly (32) comprises a weighing support (321) and a weight sensing mechanism (322) connected to the weighing support (321).

5. A weighing device for a powder mill according to claim 4, characterized in that The weight sensing mechanism (322) and the weighing support (321) have a gap in the transverse direction.

6. A weighing device for a powder mill according to claim 5, characterized in that The pushing assembly (33) is fixed to the outer side wall of the C end of the transverse feeding pipe (31), the telescopic end of the pushing assembly (33) penetrates through the C end of the transverse feeding pipe (31), and the telescopic end of the pushing assembly (33) can freely extend and retract in the transverse feeding pipe (31).

7. The weighing device for a powder mill according to claim 1, characterized in that, ​ 8. The weighing device for a powder mill according to claim 5, characterized in that, The material containing assembly (34) only contacts the weight sensing mechanism (322) during the weighing process.

9. The weighing device for a powder mill according to claim 1, characterized in that, The integrated weighing device (60) is connected to the bottom of the finished product box (50).

10. A weighing device for a powder mill according to claim 9, characterized in that The material containing assembly (34) is in the shape of a square dustpan.

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