CN209943025U - Multi-pump-head constant flow pump automatic system capable of accurately metering - Google Patents
Multi-pump-head constant flow pump automatic system capable of accurately metering Download PDFInfo
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- CN209943025U CN209943025U CN201920729806.2U CN201920729806U CN209943025U CN 209943025 U CN209943025 U CN 209943025U CN 201920729806 U CN201920729806 U CN 201920729806U CN 209943025 U CN209943025 U CN 209943025U
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Abstract
The utility model discloses a but automatic system of accurate measuring multi-pump head constant flow pump belongs to the chemical industry apparatus field, the system includes constant flow pump and weighing device, and constant flow pump and weighing device are connected by the communication line. Constant flow pump includes the box, be equipped with servo motor, driver, PLC controller, the pump body in the box, the weighing device includes weighing platform and weighing module, weighing module and servo motor's signal all is through PLC controller control, installs the touch-sensitive screen outside the box and realizes interactive control, the utility model discloses high accuracy, high intelligence, high pressure resistant, low pulse, can remember, can be in succession the low pulse output liquid of ration, the design flow is big, can contact the corrosion of organic solvent such as the medium material resistant strong acid strong alkali and corrode.
Description
Technical Field
The utility model belongs to the chemical industry apparatus field, in particular to but many pump heads constant flow pump automatic system of accurate measurement.
Background
The constant flow pump is widely applied to various fields of petrochemical industry, pharmaceutical chemical industry, dye chemical industry, pesticide chemical industry, various chemical reactions and the like. The constant flow pump is accurate, durable, stable in conveying flow, continuously adjustable, high in pressure and lift, free of contact of conveyed substances with the outside, pollution-free, capable of feeding liquid and pumping liquid at various flows, micro-conveying and capable of being used for small-sized canning. As CN105986985A discloses a constant flow pump device, which comprises a plunger cylinder, a plunger reciprocating in the plunger cylinder, the plunger dividing the plunger cylinder into a first chamber and a second chamber which are closed, and a first direction valve and a second direction valve respectively connected to the first chamber and the second chamber. And after the first reversing valve and the second reversing valve are connected in parallel, one end of the first reversing valve is communicated with an external liquid inlet, and the other end of the first reversing valve is communicated with an external liquid outlet. The utility model discloses can realize two-way continuous constant current, can also realize simultaneously in dynamic constant voltage flow system, carry out two-way continuous constant current to a plurality of passageways.
CN105986985A discloses a constant pressure and constant flow pump, which can realize stable control of pressure and flow. The two sets of liquid output devices alternately operate, so that continuous output of pressure liquid can be realized; when one set of liquid output device is in an operating state, the controller controls the pressure of the other set of liquid output device to be equal to the pressure liquid, and when the two sets of liquid output devices are switched, no pressure difference exists, so that the stability of the whole output pressure is ensured.
CN109538439A discloses a high-pressure constant-flow pump for a liquid chromatograph, which includes a pump body and a pump cover, wherein a front panel is arranged on the front side wall of the pump cover, the pump body is mounted on the front panel, a servo motor, a cam, a liquid inlet and a liquid outlet are arranged in the pump body, an output shaft of the servo motor is connected with the cam to drive the cam to rotate, a liquid inlet hose is connected to the liquid inlet, a flow meter is connected to the liquid outlet, and a liquid outlet hose is connected to the other port of; the front panel is provided with a touch screen, and a power switch key, a split charging key and a data display screen are arranged in the touch screen; the pump cover is internally provided with a controller, the outside of the pump cover is provided with a foot switch which is an electric contact switch, the power switch key, the split charging key, the foot switch and the flowmeter are respectively connected with the controller, and the controller is respectively connected with the servo motor and the data display screen. The utility model discloses can realize carrying out partial shipment steadily to the play liquid of constant flow pump, reduce artificial work load, the operation is light to job stabilization nature is good.
As described above, the prior art discloses various types of constant flow pump devices, which cannot realize continuous and accurate metering, cannot output liquid in a continuous and quantitative manner with low pulse, lacks versatility in combination with other systems, and has an open control interface capable of communicating with other autonomous systems to monitor flow rate and alarm deviation in real time.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem, the utility model discloses the people has carried out the deep research to this, after having paid out a large amount of creative work, provides a but many pump heads constant flow pump automatic system of accurate measurement who is different from prior art scheme, the utility model discloses high accuracy, high intelligence, high pressure resistant, low pulse, can remember, can be in succession quantitative low pulse output liquid, the design flow is big, can contact the corrosion of organic solvent such as medium material resistant strong acid alkali.
The utility model provides a technical scheme specifically do, but a many pump heads constant flow pump automatic system of accurate measurement, including constant flow pump and weighing device, constant flow pump and weighing device are connected by the communication line.
The constant flow pump comprises a box body, wherein a servo motor, a driver, a PLC (programmable logic controller) and a pump body are arranged in the box body, the weighing device comprises a weighing platform and a weighing module, the weighing module is arranged below the weighing platform, an aviation plug is arranged outside the box body, and the weighing platform is connected with the aviation plug through a communication line. Signals of the weighing module and the servo motor are controlled by the PLC, and the driver controls communication between the servo motor and the PLC. A touch screen is installed outside the box body to achieve interactive control, and the touch screen is provided with a display screen and a power switch.
The servo motor is provided with a small synchronous belt pulley, the pump body is provided with a bearing, a crankshaft is arranged between the bearings at two ends, the crankshaft is provided with a large synchronous belt pulley, the large synchronous belt pulley and the small synchronous belt pulley drive the power of the servo motor to the crankshaft through a synchronous belt, the crankshaft is provided with a plurality of cams, the cams are provided with connecting rods, the connecting rods are provided with plungers, the front ends of the plungers are provided with pump heads, and the pump heads are fixed on the outer side of the box body.
The pump head is equipped with check valve and lower check valve from top to bottom respectively, the last check valve of pump head passes through the interface connection of high-pressure corrugated hose with last horizontal bar, the lower check valve of pump head passes through the interface connection of high-pressure corrugated hose with horizontal bar down, go up horizontal bar, horizontal bar respectively from top to bottom relatively fixed outside the box, have a plurality of interfaces on the horizontal bar from top to bottom, every interface communicates with each other, goes up the horizontal bar front end and is equipped with the liquid outlet, and horizontal bar front end is equipped with the inlet down.
The pressure sensor is installed at the rear end of the upper transverse strip, a feedback signal of the pressure sensor is connected to the PLC, the highest pressure upper limit set value is set on the display screen, when the pressure of the upper transverse strip liquid outlet and a pipeline correspondingly connected with the upper transverse strip liquid outlet is blocked up to the upper limit set value, the PLC can pause the operation of the servo motor until the pressure drops below the upper limit, and abnormal overpressure protection can be realized.
When the plunger moves backwards, the lower check valve opens the valve ball of the lower check valve through the backward suction of the plunger, liquid is sucked into the cavity of the pump head through the liquid inlet and the high-pressure corrugated pipe through the suction of the pump head, when the plunger moves forwards, the valve ball of the upper check valve is opened by the liquid in the cavity of the pump head, and the liquid is conveyed to a designated place through the high-pressure corrugated pipe and the liquid outlet, and so on.
Preferably, the crankshaft is provided with a plurality of cams which can be increased according to requirements, when the cams are at the final position, the positions of other cams are changed back and forth correspondingly through the rotation of the crankshaft, and the more cams, the smaller the liquid pulse is delivered.
Set for every minute pump output flow on the display screen, the PLC controller calculates current velocity of flow and the deviation value of setting for the velocity of flow through weighing module feedback signal when the pump operates, gives servo motor control signal in real time to the rotational speed of adjustment servo motor realizes accurate measurement.
Preferably, the inner hole of the pump head is provided with a sealing ring, and the sealing ring is sealed with the front end of the plunger.
Preferably, the rear end of the plunger and the pump body are guided by linear bearings, so that the precision of linear motion is greatly improved, and the service life of the sealing ring is prolonged.
Preferably, the plunger, the upper check valve and the lower check valve are made of zirconia ceramics.
Preferably, the inner side of the box body is provided with a cooling fan, and the outer side of the corresponding box body is provided with a vent hole.
Preferably, a wire groove is formed in the box body.
Preferably, the number of the pump heads is at least three. Three pump heads, with very small pulses, the number of pump heads can be increased if smaller pulses are required.
Preferably, the weighing module has two pieces.
The utility model has the advantages that:
1. the liquid is high in precision, and low-pulse output liquid can be continuously quantified;
2. the application range is wide, and the method can be used in the micro-chemical engineering process, various preparation liquid phases, a micro-channel reactor, a fluidized bed, a fixed bed, a hydrogenation reactor and a dosing and dripping system;
3. the low pulse adopts a three-plunger structure, the service life of the sealing ring is long, and the plunger, the upper check valve and the lower check valve all adopt zirconia ceramics, so that the tolerance is strong;
4. the intelligent control system is high in intelligence, adopts a PLC control system, can communicate with a computer 485, and can freely add programs and modules;
5. the system can memorize, display flow and pressure in real time, and set memorize, pressure alarm, error alarm, remote control and short message notification;
6. the design flow is large, the high pressure is resistant, and the contact medium material is resistant to corrosion of organic solvents such as strong acid, strong alkali and the like.
Drawings
Fig. 1 is a schematic structural diagram of an automation system according to an embodiment of the present invention;
fig. 2 and fig. 3 are schematic structural diagrams of a constant flow pump in an embodiment of the present invention;
wherein: 1. the device comprises a box body, 11, a cooling fan, 12, a ventilation opening, 13, a wire groove, 2, a servo motor, 21, a large synchronous pulley, 22, a small synchronous pulley, 23, a synchronous belt, 3, a driver, 4, a PLC controller, 5, a pump body, 51, a bearing, 52, a crankshaft, 53, a cam, 54, a connecting rod, 55, a plunger, 6, a pump head, 61, an upper check valve, 62, a lower check valve, 63, a high-pressure corrugated hose, 64, an upper cross bar, 65, a lower cross bar, 66, a liquid outlet, 67, a pressure sensor, 68, a liquid inlet, 7, a touch screen, 71, a display screen, 72, a power switch, 8, a weighing device, 81, a weighing platform, 82 and a weighing module.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. However, the use and purpose of these embodiments are merely to exemplify the present invention, and do not constitute any limitation to the actual scope of the present invention in any form, and do not limit the scope of the present invention.
As shown in fig. 1 and 2, a but automatic system of accurate metering's multiple-pump-head constant flow pump, including constant flow pump and weighing device 8, weighing device 8 includes weighing platform 81 and two weighing module 82, the constant flow pump includes box 1, be equipped with servo motor 2 in the box 1, driver 3, PLC controller 4, the pump body 5, weighing module 82 all controls through PLC controller 4 with servo motor 2's signal, install touch-sensitive screen 7 outside box 1 and realize mutual control, touch-sensitive screen 7 is equipped with display screen 71 and switch 72, the box inboard is equipped with cooling fan 11, it is equipped with ventilation hole 12 to correspond the box outside, be equipped with wire casing 13 in the box.
The servo motor 2 is provided with a small synchronous belt wheel 22, the pump body 5 is provided with a bearing 51, a crankshaft 52 is arranged between the bearings 51 at two ends, the crankshaft 52 is provided with a large synchronous belt wheel 21, the large synchronous belt wheel 21 and the small synchronous belt wheel 22 are driven by a synchronous belt 23 to drive the power of the servo motor 2 to the crankshaft 52, the crankshaft 52 is provided with a plurality of cams 53, the cams 53 are provided with connecting rods 54, the connecting rods 54 are provided with plungers 55, the front ends of the plungers 55 are provided with pump heads 6, the number of the pump heads 6 is three, the pump heads 6 are fixed on the outer side of the box body 1, inner holes of the pump heads 6 are provided with sealing rings, the sealing rings are sealed. The upper and lower parts of the pump head 6 are respectively provided with an upper one-way valve 61 and a lower one-way valve 62, and the plunger 55, the upper one-way valve 61 and the lower one-way valve 62 are made of zirconia ceramics.
The last check valve 61 of pump head 6 passes through the interface connection of high-pressure corrugated hose 63 with last horizontal bar 64, the lower check valve 62 of pump head 6 passes through the interface connection of high-pressure corrugated hose 63 with lower horizontal bar 65, go up horizontal bar 64, lower horizontal bar 65 is relative fixed respectively from top to bottom outside box 1, have a plurality of interfaces on the upper and lower horizontal bar, every interface communicates with each other, it is equipped with liquid outlet 66 to go up the horizontal bar 64 front end, go up horizontal bar 64 rear end and install pressure sensor 67, lower horizontal bar 65 front end is equipped with inlet 68.
Use the utility model discloses during the constant flow pump, put the material on weighing module's weighing platform, inlet 68 through liquid inlet pipeline and horizontal bar 65 down is connected, every interface passes through high-pressure corrugated hose 63 and is connected with pump head 6's lower check valve 65, along with bent axle 52's rotation, plunger 55 moves in the front and back, when plunger 55 is back, check valve 65 is opened down through the valve pearl of check valve 65 to the backward suction of plunger 55 down, liquid passes through inlet 68 through pump head 6's suction, high-pressure corrugated pipe 63 is inhaled in pump head 6's the cavity, when plunger 55 impels forward, the valve pearl of going up check valve 61 is opened by the liquid in pump head 6 cavity, liquid passes through high-pressure corrugated pipe 63, appointed place is carried to liquid outlet 66.
Set for the output flow of every minute pump on display screen 71, PLC controller 4 calculates the current velocity of flow and the deviation value of setting for the velocity of flow through weighing module feedback signal when the pump operates, gives servo motor 2 control signal in real time to the rotational speed of adjustment servo motor 2 realizes accurate measurement.
The pressure transmitter 67 arranged at the rear end of the upper cross bar 64 of the pump head 6 has a feedback signal connected to the PLC controller 4, a maximum pressure upper limit setting value is set on the display screen 71, when the liquid outlet 66 on the upper cross bar 64 is blocked with a pipeline correspondingly connected with the liquid outlet, the PLC controller 4 stops the operation of the servo motor 2 until the pressure drops below the upper limit, and abnormal overpressure protection can be realized.
As shown in fig. 3, the specific steps implemented by the apparatus of the present invention are as follows:
s1, starting the equipment: the device is powered on by connecting the power cord of the device to the AC220V power supply, and the power switch 72 button on the lower right of the device is pressed to complete the power-on, after the power-on, the display screen 71 enters the program main interface.
S2, setting flow rate: before operation, the operation flow rate needs to be set, the interface for inputting the flow rate can be popped up by clicking the flow rate input box, and the flow rate setting is finished by clicking the 'Enter' button after the flow rate value is input
S3, upper limit pressure setting: the setting is used for protecting the normal operation of the pump under the pressure, the setting main interface is entered after the pump is started, the interface entering the set pressure value is clicked in the input frame on the right side of the upper pressure limiting force, the range of the upper limit pressure value is reached, and the 'Enter' button is clicked to complete the pressure setting after the required pressure is input.
S4, timing closing: the function is used for setting the pump to operate within a specified time, and the pump can automatically stop operating after the specified time.
The setting method comprises the following steps: the input box on the right side of the timing is clicked to Enter an interface for setting timing time, an Enter button is clicked after a value (minutes) to be timed is input to finish time setting, then a start button is clicked, the system automatically counts time when the start button is clicked, and the system automatically stops when the time is reached.
S5, start/stop operation: before clicking to start running, whether the flow rate setting and the pressure setting are normal or not is checked, whether the pipeline is connected perfectly or not is checked, then, a 'start running' button is clicked to start running, and if the 'stop running' button needs to be clicked, the running can be started.
It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes, modifications and/or alterations to the present invention may be made by those skilled in the art after reading the technical disclosure of the present invention, and all such equivalents may fall within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The automatic system for the multi-pump-head constant flow pump capable of accurately metering is characterized by comprising a constant flow pump and a weighing device, wherein the constant flow pump and the weighing device are connected through a communication line;
the automatic feeding device comprises a box body, wherein a servo motor, a driver, a PLC (programmable logic controller) and a pump body are arranged in the box body, a small synchronous belt pulley is arranged on the servo motor, bearings are arranged on the pump body, a crankshaft is arranged between the bearings at two ends, a large synchronous belt pulley is arranged on the crankshaft, the large synchronous belt pulley and the small synchronous belt pulley drive the power of the servo motor to the crankshaft through synchronous belt driving, a plurality of cams are arranged on the crankshaft, connecting rods are arranged on the cams, plungers are arranged on the connecting rods, pump heads are arranged at the front ends of the plungers;
the upper check valve and the lower check valve are respectively arranged at the upper part and the lower part of the pump head, the upper check valve of the pump head is connected with the interface of the upper transverse bar through a high-pressure corrugated hose, the lower check valve of the pump head is connected with the interface of the lower transverse bar through a high-pressure corrugated hose, the upper transverse bar and the lower transverse bar are respectively and oppositely fixed outside the box body from top to bottom, a plurality of interfaces are arranged on the upper transverse bar and the lower transverse bar, each interface is communicated, a liquid outlet is arranged at the front end of the upper transverse bar, a pressure sensor is arranged at the rear end of the upper transverse bar, and;
the box is equipped with the touch-sensitive screen outward, the touch-sensitive screen is equipped with display screen and switch.
2. The automated system according to claim 1, wherein the weighing device comprises a platform and a weighing module, the weighing module is disposed below the platform, an aviation plug is disposed outside the box, and the platform and the aviation plug are connected by a communication line.
3. The automated system for a multi-pump-head constant flow pump capable of accurate metering of claim 1, wherein the pump head inner bore is fitted with a sealing ring, and the sealing ring is sealed with the plunger front end.
4. The automated, precision-metered multiple-pump-head constant flow pump system of claim 3, wherein the plunger back end and pump body are guided using linear bearings.
5. The automated system for a multi-pump-head constant flow pump capable of achieving accurate metering according to claim 1, wherein the plunger, the upper check valve and the lower check valve are made of zirconia ceramics.
6. The automated, precision-metered multiple-pump-head constant flow pump system of claim 1, wherein the crankshaft is provided with a plurality of cams.
7. The automated system for precisely metered multi-pump-head constant flow pumps of claim 1, wherein the interior of the housing is provided with a cooling fan and the exterior of the housing is provided with a vent.
8. The automated system for accurately metered multi-pump-head constant flow pumps of claim 1, wherein a wireway is provided within the housing.
9. The automated system according to claim 1, wherein the number of pump heads is at least three.
10. The automated system for precisely metered multi-head constant flow pumps of claim 2 wherein there are two weighing modules.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729806.2U CN209943025U (en) | 2019-05-21 | 2019-05-21 | Multi-pump-head constant flow pump automatic system capable of accurately metering |
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| CN201920729806.2U CN209943025U (en) | 2019-05-21 | 2019-05-21 | Multi-pump-head constant flow pump automatic system capable of accurately metering |
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| CN209943025U true CN209943025U (en) | 2020-01-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030172A (en) * | 2019-05-21 | 2019-07-19 | 菲立化学工程(遂昌)有限公司 | It is a kind of can accurate measurement more pump head constant flow pump automated systems |
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2019
- 2019-05-21 CN CN201920729806.2U patent/CN209943025U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030172A (en) * | 2019-05-21 | 2019-07-19 | 菲立化学工程(遂昌)有限公司 | It is a kind of can accurate measurement more pump head constant flow pump automated systems |
| CN110030172B (en) * | 2019-05-21 | 2024-03-29 | 菲立化学工程(遂昌)有限公司 | Multi-pump head constant flow pump automatic system capable of accurately metering |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An automatic system of multi pump head constant flow pump with accurate metering Effective date of registration: 20210927 Granted publication date: 20200114 Pledgee: Zhejiang Tailong Commercial Bank Co., Ltd. Lishui Suichang sub branch Pledgor: FRAPP'S CHEMICAL ENGINEERING (SUICHANG) Co.,Ltd. Registration number: Y2021330001778 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |