CN211755909U - System for controlling material flow by using pump speed - Google Patents
System for controlling material flow by using pump speed Download PDFInfo
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- CN211755909U CN211755909U CN202020129243.6U CN202020129243U CN211755909U CN 211755909 U CN211755909 U CN 211755909U CN 202020129243 U CN202020129243 U CN 202020129243U CN 211755909 U CN211755909 U CN 211755909U
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- diaphragm pump
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- pump speed
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Abstract
The utility model relates to a control material flow system with pump speed, including the sand mill, main motor, the grinding vessel, pump speed pulse sensor, the diaphragm pump, the proportional valve, flow automatic control device, the diaphragm pump is installed in the material pipeline, and the grinding vessel of sand mill is connected through the material pipeline, pump speed pulse sensor installs on the diaphragm pump body, pump speed pulse sensor is used for detecting the pulse signal that the diaphragm reciprocating motion of diaphragm pump produced, the inlet end of diaphragm pump is connected with the compressed air admission line that is used for driving its motion, install the proportional valve on the compressed air admission line, the proportional valve is used for controlling the inlet flow of diaphragm pump, pump speed pulse sensor, the proportional valve is respectively through line connection flow automatic control device, pump speed pulse sensor conveys the pulse signal that detects to flow automatic control device; the utility model discloses can detect diaphragm pump flow and solve the unstable technical problem of diaphragm pump sending material through control diaphragm pump speed regulation flow.
Description
[ technical field ]
The utility model belongs to the technical field of pump sending material flow control technique and specifically relates to a with fast material flow control system of pump.
[ background art ]
If the material ground by the sand mill has the characteristics of high viscosity, toxicity, volatility or corrosiveness, a diaphragm pump is often used for conveying the material in an industrial production site. The diaphragm pump has no rotating part and shaft seal, is not easy to leak, has simple structure, few easily-damaged parts, good material passing performance, easy maintenance and no electricity, and is safe and reliable to work particularly in flammable and explosive environments, so the diaphragm pump is widely used. However, the diaphragm pump pushes the diaphragm to reciprocate by an internal pneumatic mechanism, materials are extruded to be conveyed, the materials move forward in a creeping manner, the flow is very unstable, and the fluctuation is very large when a common flowmeter is used for displaying; if the material conductivity is low, an electromagnetic flow meter cannot be used, and an expensive mass flow meter must be used. Therefore, the disadvantage is that the use and maintenance costs are too high for the flow display and control in the case of high process flow requirements.
[ contents of utility model ]
The utility model aims at solving foretell not enough and provide a with pump speed control material flow system, can detect diaphragm pump flow and solve the unstable technical problem of diaphragm pump pumping material through control diaphragm pump speed regulation flow, and use and the maintenance cost is low.
The system for controlling the material flow by using the pump speed comprises a sand mill 1, wherein the sand mill 1 comprises a main motor 2 and a grinding cylinder 3, the grinding cylinder 3 is connected with a material pipeline 4, the system further comprises a pump speed pulse sensor 5, a diaphragm pump 6, a proportional valve 7 and an automatic flow control device 8, the diaphragm pump 6 is installed in the material pipeline 4 and is connected with the grinding cylinder 3 of the sand mill 1 through the material pipeline 4, the pump speed pulse sensor 5 is installed on the body of the diaphragm pump 6, the pump speed pulse sensor 5 is used for detecting a pulse signal generated by the reciprocating motion of a diaphragm of the diaphragm pump 6, the air inlet end of the diaphragm pump 6 is connected with a compressed air inlet pipeline for driving the diaphragm pump to move, the proportional valve 7 is installed on the compressed air inlet pipeline, the proportional valve 7 is used for controlling the air inlet flow of the diaphragm pump 6, and the pump speed pulse sensor 5, The proportional valves 7 are respectively connected with an automatic flow control device 8 through lines, and the pump speed pulse sensor 5 transmits detected pulse signals to the automatic flow control device 8.
Further, the flow automatic control device 8 comprises a PLC controller and an input/output transmitter, the input end of the PLC controller is connected with the pump speed pulse sensor 5, the output end of the PLC controller is connected with the input/output transmitter, and the output end of the input/output transmitter is connected with the proportional valve 7.
Compared with the prior art, the utility model provides a system for realizing flow control with control diaphragm pump speed, thereby utilize the characteristic of diaphragm pump, thereby speed through the proportional valve control diaphragm pump reaches the control to the flow, the diaphragm pump has been solved because the material wriggles, the flow is undulant big, be difficult to accurate measurement's problem, a low-cost solution to diaphragm pump flow ability accurate control relatively is also provided simultaneously, the flowmeter of specialty that this system used and maintenance cost compare will be low a lot of, its control accuracy also can reach the production technology flow control requirement of most of producers, can produce very high economic benefits in-service use, has fine suitability, be worth popularizing and applying.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. the device comprises a sand mill 2, a main motor 3, a grinding cylinder 4, a material pipeline 5, a pump speed pulse sensor 6, a diaphragm pump 7, a proportional valve 8 and an automatic flow control device.
[ detailed description of the invention ]
The invention is further described below with reference to the accompanying drawings:
as shown in the attached figure 1, the utility model provides a system for controlling material flow by pump speed, which comprises a sand mill 1, wherein the sand mill 1 comprises a main motor 2 and a grinding cylinder 3, the grinding cylinder 3 is connected with a material pipeline 4, the system also comprises a pump speed pulse sensor 5, a diaphragm pump 6, a proportional valve 7 and an automatic flow control device 8, the diaphragm pump 6 is arranged in the material pipeline 4 and is connected with the grinding cylinder 3 of the sand mill 1 through the material pipeline 4, the pump speed pulse sensor 5 is arranged on the body of the diaphragm pump 6, the pump speed pulse sensor 5 is used for detecting pulse signals generated by the reciprocating motion of a diaphragm of the diaphragm pump 6, the air inlet end of the diaphragm pump 6 is connected with a compressed air inlet pipeline for driving the motion of the diaphragm pump, the proportional valve 7 is arranged on the compressed air inlet pipeline, the proportional valve 7 is used for controlling the air inlet flow of the diaphragm pump 6, the pump speed pulse sensor 5 and the proportional valve, the pump speed pulse sensor 5 transmits the detected pulse signal to the automatic flow rate control device 8. The flow automatic control device 8 comprises a PLC controller and an input/output transmitter, the input end of the PLC controller is connected with the pump speed pulse sensor 5, the output end of the PLC controller is connected with the input/output transmitter, and the output end of the input/output transmitter is connected with the proportional valve 7.
The utility model belongs to the technical field of the industrial technology of pump sending material flow control and specifically relates to a control system with fast control material flow of pump. In the flow detection control system of the diaphragm pump, a pump speed pulse sensor is arranged on a diaphragm pump body and can detect a pulse signal generated by the reciprocating motion of a diaphragm; the proportional valve is mounted on the inlet line driving the diaphragm pump. Because the extrusion capacity of the diaphragm pump is constant under certain air source pressure and speed, the pulse signal of the diaphragm pump is positively correlated with the material flow, and after the actual flow is calculated by the algorithm of the flow control system, the actual flow is compared with the process set flow, the opening of the proportional valve is adjusted by using the deviation, and the speed of the diaphragm pump is reduced or increased, so that the closed-loop control of the flow of the diaphragm pump is realized.
The utility model discloses in, pump speed pulse sensor is the proximity switch who installs on the diaphragm pump body, and it can detect the position that promotes diaphragm motion to at the diaphragm pump at the during operation, can pick up the duty cycle pulse of diaphragm pump, this pulse signal conveys flow automatic control device. The flow automatic control device consists of a PLC controller containing a flow monitoring algorithm and a related input/output transmitter, can obtain the current flow by calculating the pulse frequency and comparing the technical data of the diaphragm pump with a conveying characteristic curve, and then outputs the control to the proportional valve by means of a PID closed-loop control algorithm according to the set value of the flow; the proportional valve is installed on a compressed air inlet pipeline for driving the diaphragm pump to operate and is used for controlling the air inlet flow of the diaphragm pump, so that the purposes of controlling the pump speed and indirectly controlling the material conveying flow are achieved.
The system for controlling the diaphragm pump speed to realize flow control provides a low-cost solution which can relatively accurately control the flow of the diaphragm pump, the system comprises a small number of control components, the control is complex and not high, the use and maintenance cost is much lower than that of a professional flowmeter, the control precision can meet the flow control requirements of production processes of most manufacturers, very high economic benefits can be generated in actual use, and particularly the problems that the diaphragm pump has large flow fluctuation and is difficult to accurately measure due to material creeping are solved.
The present invention is not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and are all included in the protection scope of the present invention.
Claims (2)
1. A system for controlling material flow with pump speed, comprising a sand mill (1), said sand mill (1) comprising a main motor (2) and a grinding cylinder (3), said grinding cylinder (3) being connected to a material conduit (4), characterized in that: the automatic flow control device is characterized by further comprising a pump speed pulse sensor (5), a diaphragm pump (6), a proportional valve (7) and an automatic flow control device (8), wherein the diaphragm pump (6) is installed in the material pipeline (4) and is connected with a grinding cylinder (3) of the sand mill (1) through the material pipeline (4), the pump speed pulse sensor (5) is installed on the body of the diaphragm pump (6), the pump speed pulse sensor (5) is used for detecting a pulse signal generated by the reciprocating motion of a diaphragm of the diaphragm pump (6), the air inlet end of the diaphragm pump (6) is connected with a compressed air inlet pipeline used for driving the diaphragm pump to move, the proportional valve (7) is installed on the compressed air inlet pipeline, the proportional valve (7) is used for controlling the air inlet flow of the diaphragm pump (6), and the pump speed pulse sensor (5) and the proportional valve (7) are respectively connected with the automatic flow control device (, the pump speed pulse sensor (5) transmits the detected pulse signal to the automatic flow control device (8).
2. The system for controlling material flow with pump speed as claimed in claim 1, wherein: the flow automatic control device (8) comprises a PLC controller and an input/output transmitter, the input end of the PLC controller is connected with the pump speed pulse sensor (5), the output end of the PLC controller is connected with the input/output transmitter, and the output end of the input/output transmitter is connected with the proportional valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020129243.6U CN211755909U (en) | 2020-01-20 | 2020-01-20 | System for controlling material flow by using pump speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020129243.6U CN211755909U (en) | 2020-01-20 | 2020-01-20 | System for controlling material flow by using pump speed |
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| Publication Number | Publication Date |
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| CN211755909U true CN211755909U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020129243.6U Active CN211755909U (en) | 2020-01-20 | 2020-01-20 | System for controlling material flow by using pump speed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622158A (en) * | 2021-08-13 | 2021-11-09 | 山东海格科技信息有限责任公司 | Powder-liquid dual-purpose washing system and method for adding washing materials to washing clothes |
| CN115489213A (en) * | 2022-11-21 | 2022-12-20 | 季华实验室 | OLED (organic light emitting diode) jet printing ink path flow control method and system |
-
2020
- 2020-01-20 CN CN202020129243.6U patent/CN211755909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622158A (en) * | 2021-08-13 | 2021-11-09 | 山东海格科技信息有限责任公司 | Powder-liquid dual-purpose washing system and method for adding washing materials to washing clothes |
| CN115489213A (en) * | 2022-11-21 | 2022-12-20 | 季华实验室 | OLED (organic light emitting diode) jet printing ink path flow control method and system |
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