Conveying and flushing device and conveying and flushing method based on PLC (Programmable Logic Controller) logic control

Abstract

The invention provides a conveying flushing device and method based on PLC logic control. The conveying flushing device comprises a PLC station and an electric control valve, a conveying pipeline comprises a first discharging pipe, a second discharging pipe and a mixed discharging pipe set, and the first discharging pipe and the second discharging pipe are both communicated with the mixed discharging pipe set; the flushing pipeline is of a three-way structure, two branch channels of the flushing pipeline are communicated with the first discharging pipe and the second discharging pipe respectively, and the other branch channel of the flushing pipeline is communicated with a flushing water source; the electric control valve comprises a first discharging valve, a second discharging valve, a first flushing valve, a second flushing valve and a mixed discharging valve group; the first discharging valve, the second discharging valve, the first flushing valve, the second flushing valve and the mixed discharging valve group are all in signal connection with the PLC station; the first discharging valve is arranged on the first discharging pipe, the second discharging valve is arranged on the second discharging pipe, the first flushing valve is arranged on a channel, communicated with the first discharging pipe, of the flushing pipeline, the second flushing valve is arranged on a channel, communicated with the second discharging pipe, of the flushing pipeline, and the mixed discharging valve set is arranged on the mixed discharging pipe set.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying pipelines, in particular to a material conveying flushing device and a material conveying flushing method based on PLC logic control. Background Art

[0002] In actual production, since the viscosity of the mixed materials transported by pipelines in the process is very high, after long-term feeding in the production process, material residues continue to adhere to the inner wall of the pipeline, causing a large amount of material to adhere to the inner wall; after a certain period of time of transporting materials, the attachments on the inner wall of the pipeline gradually increase and then block the pipeline and harden, making it extremely difficult to clean after the blockage, resulting in the discontinuity of subsequent feeding and discharging processes and a high incidence of equipment failures.

[0003] In the traditional way, a lot of manual cleaning is required after the pipeline is used for a long time. The pipeline flushing system in the existing patented technology is mostly for single-channel pipeline flushing. When applied to dual-channel parallel pipelines, the flushing efficiency is low and the operation is complicated. Summary of the invention

[0004] The object of the present invention is to provide a material feeding and flushing device and a material feeding and flushing method based on PLC logic control, which can conveniently flush two-way pipelines and reduce the complexity of flushing operations;

[0005] The present invention provides a feeding and flushing device based on PLC logic control, comprising a PLC station, an electric control valve, a feeding pipeline and a flushing pipeline; the feeding pipeline comprises a first discharge pipe, a second discharge pipe and a mixed discharge pipe group, and the first discharge pipe and the second discharge pipe are both connected to the mixed discharge pipe group; the flushing pipeline is a three-way structure, wherein two branches are respectively connected to the first discharge pipe and the second discharge pipe, and the other branch is connected to a flushing water source; the electric control valve comprises a first discharge valve, a second discharge valve, a first flushing valve, a second flushing valve and a mixed discharge valve group, and the first discharge valve, the second discharge valve, the first flushing valve, the second flushing valve and the mixed discharge valve group are all connected to the PLC station signal; the first discharge valve is arranged on the first discharge pipe, the second discharge valve is arranged on the second discharge pipe, the first flushing valve is arranged on the passage where the flushing pipeline is connected to the first discharge pipe, the second flushing valve is arranged on the passage where the flushing pipeline is connected to the second discharge pipe, and the mixed discharge valve group is arranged on the mixed discharge pipe group.

[0006] Furthermore, the mixed discharge pipe group includes an upstream pipeline, a first branch pipeline, a second branch pipeline and a downstream pipeline; the first discharge pipe and the second discharge pipe are commonly connected to the upstream port of the upstream pipeline, the first branch pipeline and the second branch pipeline are commonly connected to the downstream port of the upstream pipeline, and the first branch pipeline and the second branch pipeline are commonly connected to the upstream port of the downstream pipeline.

[0007] Furthermore, the first branch pipeline and the second branch pipeline are respectively provided with pumps.

[0008] Furthermore, the mixed discharging valve group includes two first branch valves, and the two first branch valves are respectively arranged on the upstream and downstream sides of the pump on the first branch pipeline.

[0009] Furthermore, the mixed discharging valve group includes two second branch valves, and the two second branch valves are respectively arranged on the upstream and downstream sides of the pump on the second branch pipeline.

[0010] Furthermore, the mixed discharging valve group includes a downstream valve, and the downstream valve is arranged on the downstream pipeline.

[0011] Furthermore, the downstream pipeline is connected with a main material delivery pipeline of the equipment, and the connection point is located at the upstream side of the downstream valve; the main material delivery pipeline of the equipment is connected with a first material delivery branch pipeline and a second material delivery branch pipeline.

[0012] Furthermore, the mixed material discharging valve group includes a first material delivery branch valve and a second material delivery branch valve, the first material delivery branch valve is arranged on the first material delivery branch pipeline, and the second material delivery branch valve is arranged on the second material delivery branch pipeline.

[0013] Furthermore, the PLC station includes a PLC controller and an operation screen.

[0014] The present invention also provides a material feeding flushing method of a material feeding flushing device based on PLC logic control, comprising the following steps: during the material feeding process, the first flushing valve, the second flushing valve and the downstream valve are closed; the material is conveyed through the first discharge valve, the two first branch valves and the first material feeding branch valve, or the material is conveyed through the second discharge valve, the two second branch valves and the second material feeding branch valve; during the flushing process, the first discharge valve, the second discharge valve, the first material feeding branch valve and the second material feeding branch valve are closed; the flushing water is flushed through the first flushing valve, the two first branch valves and the downstream valve, or the flushing water is flushed through the second flushing valve, the two second branch valves and the downstream valve.

[0015] The technical solution of the present invention adopts a double-tube feeding structure of a first discharge pipe and a second discharge pipe, so that the feeding path can be adjusted according to user needs, and the feeding method is more flexible; and a flushing water source is connected to the first discharge pipe and the second discharge pipe through a flushing pipe with a three-way structure, and an electric control valve controlled by a PLC station is arranged on the flushing pipe, so that the flushing water can automatically control the flushing path through the PLC station. The present invention realizes the automation transformation of the equipment and realizes the logical switching between the feeding valve and the flushing valve, which greatly improves the continuity of production and creates good conditions for subsequent processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Description of reference numerals:

[0019] 1-first discharge pipe; 101-first discharge valve;

[0020] 2-second discharge pipe; 201-second discharge valve;

[0021] 301-upstream pipeline; 302-first branch pipeline; 303-second branch pipeline; 304-downstream pipeline; 305-pump; 306-equipment material delivery main pipeline; 307-first material delivery branch pipeline; 308-second material delivery branch pipeline;

[0022] 4-flushing pipeline; 401-first flushing valve; 402-second flushing valve;

[0023] 501-first branch valve; 502-second branch valve; 503-downstream valve; 504-first material delivery branch valve; 505-second material delivery branch valve;

[0024] 6-PLC station; 601-PLC controller; 602-operation screen. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In addition, the terms "first" and "second" 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, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" 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 indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Example 1

[0029] like Figure 1 As shown, the present invention provides a feeding and flushing device based on PLC logic control, including a PLC station 6, an electric control valve, a feeding pipeline and a flushing pipeline 4; the feeding pipeline includes a first discharge pipe 1, a second discharge pipe 2 and a mixed discharge pipe group, and the first discharge pipe 1 and the second discharge pipe 2 are both connected to the mixed discharge pipe group; the flushing pipeline 4 is a three-way structure, in which two branches are respectively connected to the first discharge pipe 1 and the second discharge pipe 2, and the other branch is connected to the flushing water source; the electric control valve includes a first discharge valve 101, a second discharge valve 201, a first flushing valve 401, a first discharge valve 102, a second discharge valve 103, a first flushing valve 104, a second discharge valve 105, a first flushing valve 106, a second flushing valve 107, a first flushing valve 108, a first flushing valve 109, a first flushing valve 110, a second flushing valve 111, a first flushing valve 112, a first flushing valve 113, a first flushing valve 114, a first flushing valve 115, a first flushing valve 116, a first flushing valve 117, a first flushing valve 118, a first flushing valve 119, a first flushing valve 120, a first flushing valve 121, a first flushing valve 122, a first flushing valve 123, a first flushing valve 124, a first flushing valve 125, a first flushing valve 126, a first flushing valve 127, a first flushing valve 128, a first flushing valve 129, a first flushing valve 129, a first flushing valve 129, a first flushing valve 129, a first flushing valve 121, a first flushing valve 129, a first flushing valve 121, a The second flushing valve 402 and the mixed discharge valve group, the first discharge valve 101, the second discharge valve 201, the first flushing valve 401, the second flushing valve 402 and the mixed discharge valve group are all connected to the PLC station 6 by signal; the first discharge valve 101 is arranged on the first discharge pipe 1, the second discharge valve 201 is arranged on the second discharge pipe 2, the first flushing valve 401 is arranged on the passage connecting the flushing pipeline 4 to the first discharge pipe 1, the second flushing valve 402 is arranged on the passage connecting the flushing pipeline 4 to the second discharge pipe 2, and the mixed discharge valve group is arranged on the mixed discharge pipe group. The PLC station 6 includes a PLC controller 601 and an operation screen 602.

[0030] Specifically, the PLC station 6 includes a PLC controller 601 with several PLC function modules, a power distribution cabinet, a PLC touch operation screen 602, and each valve is an electric ball valve, which is connected to the PLC station 6 through electrical signals or other wireless network signals to operate and detect the on-site ball valves and perform alarm monitoring on the site. The PLC module sets functional units and on-site ball valves according to the needs of the on-site positions, and can also perform one-key production or one-key cleaning through the logical control of the PLC. The PLC station 6 and several PLC function modules and power distribution cabinets are placed in the power distribution room, and the touch operation screen 602 is placed in the on-site control box to facilitate the inspection and operation of the workers. The PLC module sets functional units according to the needs of the on-site positions and can be adjusted according to user needs.

[0031] The first discharge pipe 1 and the second discharge pipe 2 are parallel structures, with their upstream inlet ends connected to the stirring barrel and their downstream outlet ends commonly connected to the mixing discharge pipe group.

[0032] During production of the present invention, the mixed material in the mixing barrel is conveyed to the ball mill through the first discharge valve 101 on the first discharge pipe 1 (or the second discharge valve 201 on the second discharge pipe 2) and the mixed discharge valve group on the mixed discharge pipe group. At the same time, the first flushing valve 401 and the second flushing valve 402 on the flushing pipeline 4 are closed. Thus, by adopting the double-tube feeding structure of the first discharge pipe 1 and the second discharge pipe 2, the feeding path can be adjusted according to user needs, for example, when the two mixing drums can be used alternately (when the mixing drum connected to the first discharge pipe 1 does not meet the discharge requirements, the discharge drum connected to the second discharge pipe 2 is opened); or the material mixing and transportation of the two mixing drums can be realized (for example, the material A in the mixing drum connected to the first discharge pipe 1 and the material B in the discharge drum connected to the second discharge pipe 2 are mixed and fed); or when one of the two mixing drums is repaired or fails, the other mixing drum can be opened to work. Therefore, the feeding method of the present invention is more flexible.

[0033] During flushing, the flushing water source is connected to the first discharge pipe 1 and the second discharge pipe 2 through the flushing pipe 4 of the three-way structure, and an electric control valve controlled by the PLC station 6 is arranged on the flushing pipe 4, so that the flushing water can automatically control the flushing path through the PLC station 6, and it is only necessary to control the opening of the first flushing valve 401 or the second flushing valve 402 to control the flushing water to flush along the first discharge pipe 1 or along the second discharge pipe 2. Thus, the present invention realizes the automation transformation of the equipment, realizes the logical switching between the feeding valve and the flushing valve, greatly improves the continuity of production, and creates good conditions for subsequent processes.

[0034] Example 2

[0035] The mixed discharge pipe group includes an upstream pipeline 301, a first branch pipeline 302, a second branch pipeline 303 and a downstream pipeline 304; the first discharge pipe 1 and the second discharge pipe 2 are connected to the upstream port of the upstream pipeline 301, the first branch pipeline 302 and the second branch pipeline 303 are connected to the downstream port of the upstream pipeline 301, and the first branch pipeline 302 and the second branch pipeline 303 are connected to the upstream port of the downstream pipeline 304. Pumps 305 are respectively provided on the first branch pipeline 302 and the second branch pipeline 303. The mixed discharge valve group includes two first branch valves 501, which are respectively arranged on the upstream and downstream sides of the pump 305 on the first branch pipeline 302. The mixed discharge valve group includes two second branch valves 502, which are respectively arranged on the upstream and downstream sides of the pump 305 on the second branch pipeline 303. The mixed material discharging valve group includes a downstream valve 503, which is arranged on the downstream pipeline 304. The downstream pipeline 304 is connected with the equipment material delivery main pipeline 306, and the connection is located on the upstream side of the downstream valve 503; the equipment material delivery main pipeline 306 is connected with the first material delivery branch pipeline 307 and the second material delivery branch pipeline 308. The mixed material discharging valve group includes a first material delivery branch valve 504 and a second material delivery branch valve 505, the first material delivery branch valve 504 is arranged on the first material delivery branch pipeline 307, and the second material delivery branch valve 505 is arranged on the second material delivery branch pipeline 308.

[0036] Specifically, the first branch pipeline 302 and the second branch pipeline 303 are parallel structures, and their upstream inlet ends are connected to the first discharge pipe 1 and the second discharge pipe 2 through the upstream pipeline 301, and the downstream outlet ends are connected to the equipment material delivery main pipeline 306 through the downstream pipeline 304.

[0037] The material delivery pressure can be provided and guaranteed by the first branch pipeline 302, the second branch pipeline 303 and the branch valve of the parallel structure; for example, when the material delivery pressure is insufficient, the pump 305 and the branch valve on the first branch pipeline 302 and the second branch pipeline 303 are opened at the same time, and when the material delivery pressure is too high, the pump 305 and the branch valve on the first branch pipeline 302 or the second branch pipeline 303 are selectively closed.

[0038] In addition, the material transportation process can also be guaranteed by the first branch pipeline 302, the second branch pipeline 303 and the branch valve of the parallel structure; for example, when the pump 305 on the first branch pipeline 302 fails, the two first branch valves 501 can be closed in time to inspect or replace the pump 305, and the pump 305 and the two second branch valves 502 on the second branch pipeline 303 can be opened at the same time to ensure that the transportation process will not be shut down.

[0039] When the downstream valve 503 is closed, the material enters the main material delivery pipeline 306 of the equipment, and the first material delivery branch pipeline 307 and the second material delivery branch pipeline 308 are connected in parallel to the main material delivery pipeline 306 of the equipment, and the materials are transported to different ball mills respectively; thus, by switching the first material delivery branch valve 504 or the second material delivery branch valve 505 to open, the material transportation to different ball mills can be switched.

[0040] When the downstream valve 503 is opened, flushing water is flushed out from the downstream pipeline 304.

[0041] Example 3

[0042] The present invention also provides a material feeding flushing method of a material feeding flushing device based on PLC logic control, comprising the following steps: during the feeding process, the first flushing valve 401, the second flushing valve 402 and the downstream valve 503 are closed; the material is conveyed through the first discharge valve 101, the two first branch valves 501, and the first material feeding branch valve 504, or the material is conveyed through the second discharge valve 201, the two second branch valves 502, and the second material feeding branch valve 505; during the flushing process, the first discharge valve 101, the second discharge valve 201, the first material feeding branch valve 504 and the second material feeding branch valve 505 are closed; the flushing water is flushed through the first flushing valve 401, the two first branch valves 501 and the downstream valve 503, or the flushing water is flushed through the second flushing valve 402, the two second branch valves 502 and the downstream valve 503.

[0043] Specifically, Figure 1 As shown, during production, the mixed material in the mixing barrel is transported to the ball mill through the first discharge valve 101, two first branch valves 501 and the first feed branch valve 504 (or the second discharge valve 201, two second branch valves 502, and the second feed branch valve 505). At the same time, the first flushing valve 401, the second flushing valve 402 and the downstream valve 503 are closed.

[0044] After production is completed, the pipeline will be flushed and the first flushing valve 401, two first branching valves 501 and downstream valve 503 (or the second flushing valve 402, two second branching valves 502 and downstream valve 503) will be opened. At the same time, the first discharge valve 101, the second discharge valve 201, the first feed branching valve 504 and the second feed branching valve 505 will be closed. After the pipeline is flushed, the flushing water enters the mixing barrel for the next raw material use.

[0045] The present invention can convey materials and clean pipelines more accurately and intuitively; the operating status and shutdown position of each valve position in the process can be easily controlled and observed, and the device can gradually realize the automation transformation of the equipment, focusing on solving the problem of unstable equipment operation caused by objective factors (human reaction time, manual valve switching errors). The logical control between the conveying valve and the cleaning valve is basically realized through technical means, which greatly improves the continuity of production and creates good conditions for subsequent processes.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The feeding and flushing device based on PLC logic control is characterized by: Including PLC station, electric control valve, material delivery pipeline and flushing pipeline; The material delivery pipeline includes a first discharge pipe, a second discharge pipe and a mixed discharge pipe group, and the first discharge pipe and the second discharge pipe are both connected to the mixed discharge pipe group; The flushing pipeline is a three-way structure, wherein two passages are respectively connected to the first discharge pipe and the second discharge pipe, and the other passage is connected to the flushing water source; The electric control valve comprises a first discharge valve, a second discharge valve, a first flushing valve, a second flushing valve and a mixed discharge valve group, and the first discharge valve, the second discharge valve, the first flushing valve, the second flushing valve and the mixed discharge valve group are all connected to the PLC station signal; The first discharge valve is arranged on the first discharge pipe, the second discharge valve is arranged on the second discharge pipe, the first flushing valve is arranged on the passage connecting the flushing pipeline to the first discharge pipe, the second flushing valve is arranged on the passage connecting the flushing pipeline to the second discharge pipe, and the mixed discharge valve group is arranged on the mixed discharge pipe group.

2. The material feeding and flushing device based on PLC logic control according to claim 1 is characterized in that: The mixed material discharging pipe group includes an upstream pipeline, a first branch pipeline, a second branch pipeline and a downstream pipeline; The first discharge pipe and the second discharge pipe are commonly connected to the upstream port of the upstream pipeline, the first branch pipeline and the second branch pipeline are commonly connected to the downstream port of the upstream pipeline, and the first branch pipeline and the second branch pipeline are commonly connected to the upstream port of the downstream pipeline.

3. The material feeding and flushing device based on PLC logic control according to claim 2 is characterized in that: The first branch pipeline and the second branch pipeline are respectively provided with pumps.

4. The material feeding and flushing device based on PLC logic control according to claim 3 is characterized in that: The mixed discharging valve group includes two first branch valves, and the two first branch valves are respectively arranged on the upstream and downstream sides of the pump on the first branch pipeline.

5. The material feeding and flushing device based on PLC logic control according to claim 4 is characterized in that: The mixed discharging valve group includes two second branch valves, and the two second branch valves are respectively arranged on the upstream and downstream sides of the pump on the second branch pipeline.

6. The material feeding and flushing device based on PLC logic control according to claim 5 is characterized in that: The mixed discharging valve group comprises a downstream valve, and the downstream valve is arranged on the downstream pipeline.

7. The material feeding and flushing device based on PLC logic control according to claim 6 is characterized in that: The downstream pipeline is connected with a main material delivery pipeline of the equipment, and the connection point is located on the upstream side of the downstream valve; the main material delivery pipeline of the equipment is connected with a first material delivery branch pipeline and a second material delivery branch pipeline.

8. The material feeding and flushing device based on PLC logic control according to claim 7 is characterized in that: The mixed material discharging valve group includes a first material delivery branch valve and a second material delivery branch valve. The first material delivery branch valve is arranged on the first material delivery branch pipeline, and the second material delivery branch valve is arranged on the second material delivery branch pipeline.

9. The material feeding and flushing device based on PLC logic control according to claim 8 is characterized in that: The PLC station includes a PLC controller and an operation screen.

10. A material feeding and flushing method based on the material feeding and flushing device based on PLC logic control according to claim 9, characterized in that: The steps include: During the material feeding process, the first flushing valve, the second flushing valve and the downstream valve are closed; the material is fed through the first discharge valve, the two first branch valves and the first material feeding branch valve, or the material is fed through the second discharge valve, the two second branch valves and the second material feeding branch valve; During the flushing process, the first discharge valve, the second discharge valve, the first feed branch valve and the second feed branch valve are closed; the flushing water is used to flush the pipeline through the first flushing valve, the two first branch valves and the downstream valve, or the flushing water is used to flush the pipeline through the second flushing valve, the two second branch valves and the downstream valve.

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