CN2165262Y

CN2165262Y - Electronic metering pump

Info

Publication number: CN2165262Y
Application number: CN 93234040
Authority: CN
Inventors: 黄向阳
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-29
Filing date: 1993-05-29
Publication date: 1994-05-18
Anticipated expiration: 2003-05-29

Abstract

The utility model relates to an electronic metering pump, and belongs to a pump used for electronically and automatically controlling and metering the quantity of liquid. The utility model aims to provide a high-precision and high-pressure quantitative-delivery pump which is provided with a pump body and an electric metering display circuit and has novel structure. The electronic metering pump is suitable for industries of food, chemical engineering, medicine, petrochemical engineering, etc. The electronic metering pump has the advantages of high metering precision, high output pressure, low production cost, convenient operation and wide range of application. The electronic metering pump is composed of the pump body and the electronic metering display circuit. The electronic metering display circuit is composed of a coupling circuit, a frequency dividing circuit, a counting display circuit and a stop control circuit which are connected together in sequence, and the pump body is connected with a motor on a frame via a belt pulley, a triangle belt and a shaft.

Description

Electronic metering pump

The utility model belongs to the pump that electronics is controlled the meter amount of liquid automatically.

In food and chemical industry, use very wide with various pump delivering liquid materials.Along with the continuous development of food, chemical industry processing technology, more and more higher to the pump performance requirement, the development work of pump just develops towards the multifunction direction.Metering conveying pump is exactly a kind of pump series products comparatively novel in food, the chemical industry; as YJB-1025 beverage metering pump; DJB-IV type metering pumps etc., they can also preset and show quantity delivered except that the function that general transfer pump is arranged, and are carrying quantitatively end back autostop.Existing in the market metering pump all is that an additional cover is counted main metering system with flow and combined on the basis of former centrifugal beverage pump.This series products belongs to the upgrading products of centrifugal beverage pump, and it makes centrifugal beverage pump function more become to improving but some defectives are still arranged.At first, the measuring accuracy of this metering pump is not high, and its relative error generally reaches ± and 0.3～0.6%; Secondly delivery side of pump pressure is not high, and maximum is no more than 0.3Mpa, can not adapt to some technological requirement, as: filtration, reverse osmosis, and high-order conveying or the like.

At the problems referred to above, the purpose of this utility model is to provide a kind of pump housing and electronics to measure the highi degree of accuracy of display circuit novel structure, the constant-delivery pump of high pressure, is suitable for industries such as food, chemical industry, medicine, petrochemical industry and widely uses.

Technical solutions of the utility model are as follows: it is made of the pump housing and electronics metering display circuit, and the pump housing is by the motor linkage on

belt pulley

15,14 21 of v belt and the frame.The pump housing is made of pump body and pump seat.The pump body comprises that feed liquor chews 1, pad 2, bolt, end cap 4, middle ring 5, end cap 6, axle 10, gear 20, axle 21, fluid chews 23, two rotating shafts 10,21 are monolateral supporting means, preceding supporting point has 9 two on bearing, back supporting point has 9 one on bearing, gear 20 engagements are in cantilever-shaped, one mechanical seal ring 7 and oil deflector 8 respectively are housed on diaxon, axle 10 is by stifle 12 axial limitings, axle 21 is by saturating lid 13 axial limitings, in axle 21 ends belt pulley 15 and signal porose disc 16 are housed, this signal porose disc 16 usefulness end pad 1 and screw 18 are fastened on axle 21 ends, liquid inlet port 1, fluid mouth 23 is fixed on the end cap 4 by screw thread; Pump seat comprises support 11, stifle 12, covers 13 thoroughly; The pump body links by 6 bolts 3, two straight pins 24 and bearing 9 support 11 with pump seat; 4 screws 22 of support 11 usefulness link to each other with frame; The photoelectric sensor 19(GK of electronics metering display circuit) also is screwed on frame.Electronics metering display circuit is made up of coupling circuit, frequency dividing circuit, counting display circuit, four parts of shutdown control circuit, and coupling circuit connects with frequency dividing circuit; Frequency dividing circuit connects with the counting display circuit by K switch, and the counting display circuit connects with shutdown control circuit.

Coupling circuit is made up of a photoelectric sensor (GK) and a resistance R 37 that has Schmidt circuit, it be fixed on the signal porose disc 16 of axle on 21 and match, the output terminal 77 of sensor GK links to each other with the clock pulse terminal 1 of IC1 in the frequency dividing circuit, and its power input 78 connects positive source.Resistance R 37 is connected between

terminal

77 and 78;

Frequency dividing circuit comprises four integrated IC1, IC2, IC3, IC4, four toggle switch BK1, BK2, BK3, BK4,18 resistance R 1～R16, R33, R34, two capacitor C 1, C2, two key switch T1, T2.Wherein four intergrated circuit are CC14522---can preset several two---decimal system 1/N counter, its connection is as follows: IC1 clock pulse terminal 1 links with the Out let of coupling circuit; IC1 terminal count output 10 links to each other with IC2 clock pulse terminal 11; IC2 terminal count output 20 links to each other with IC3 clock pulse terminal 21; IC3 terminal count output 30 links to each other with IC4 clock pulse terminal 31; IC1 cascade feedback input end 9 links to each other with IC2 cascade output terminal 18; IC2 cascade feedback input end 19 links to each other with IC3 cascade output terminal 28; IC3 cascade feedback input end 29 links to each other with IC4 utmost point connection output terminal 38; IC4 cascade feedback input end 39 connects positive source; Four integrated initialize data input terminals 4～37 link with toggle switch BK1, BK2, BK3, BK4 respectively, and four terminals are one group, and toggle switch all is connected to positive source, and connecting resistance R1～R16 shields on terminal 4～37 and respectively; Four integrated preset allows end 2,12,22,32 to link to each other jointly with IC1 cascade output terminal 8.This node one end links to each other with positive source through load switch T, the other end is connected to the throw over switch K in the counting display circuit, this node is the frequency dividing circuit Out let, four integrated zero

clearing control end

3,13,23,33 is linked as a bit jointly, this node one end links to each other with positive source through reset switch T2, the other end reaches 5 input terminals 65 of IC6 in the shutdown control circuit, and also each side connects a resistance R 33, R34 shields to be parallel with capacitor C 1, C2 on switch T1, T2;

Counting display circuit main devices IC5 is the reversible counting display device CL412 of four demonstrations, it is a CMOS-LED photoelectricity assembly parts, this circuit also includes four toggle switch BK5, BK6, BK7, BK8,18 resistance R 17, R32, R35, R36 in addition, three K switch, two capacitor C 3 of T3, T4, voltage-stabiliser tube WD of C4, it connects following initialize data input end 41～57; One group on per four pin, respectively with toggle switch BK5, BK6, BK7, BK8 links, and otherly separately meet a resistance R 17～R32 and shield, positive source is connected to toggle switch BK5, BK6, BK7, the power input 40 of BK8 and IC5, IC5 presets number and allows end 62 to be connected to positive source through switch T3, switch T3 goes up a capacitor C 3 in parallel, the side connects the input end 66 that a resistance R 35 terminals 62 are connected to IC6 in the shutdown control circuit simultaneously, IC5 zero clearing control end 61, link to each other with positive source through switch T4, switch T4 goes up a capacitor C 4 in parallel, the side connects a resistance R 36 and shields, the public negative pole 59 serial connection voltage-stabiliser tube WD of display tube link to each other with power cathode terminal 58 among the IC5, and IC5 borrow output terminal 60 links to each other with the input end T3 of IC7 in the shutdown control circuit, is the Out let of counting display circuit;

Shutdown control circuit by integrated IC6(or the door CC4075), the anti-phase C4069 of IC7(), IC8(D trigger CO43); resistance R 38, R39; triode DK1, DK2 diode D; relay J QX forms; its connection is as follows: IC6, output terminal 67 are put number with IC8 and are allowed end 74 to link to each other, IC8 input end 69 and the reversed-phase output of self ( End) 68 link to each other, IC7 output terminal 72 and IC8 clock pulse are dashed end 71 and are linked to each other, and IC8 output terminal 70 links to each other with triode DK1 base stage through resistance R 38, between DK1 base stage and the emitter and connect a resistance R 39, DK1, DK2 collector electrode link to each other, and link to each other with positive source after being connected in series relay again.Relay two ends parallel diode D shields.

The utility model advantage is as follows:

1, measuring accuracy height, delivery pressure height.The measuring accuracy of electronics metering pump exceeds more than 10 times than existing centrifugal metering pump in food, the chemical industry.And only need change individual part, also denumerable 10 times of the precision of this pump, hundred times of one-tenth even thousandfold ground improve.This is one of major advantage of electronics metering pump metering system, can be described as " infinite precision metering system ".The place one's entire reliance upon precision of sensing instrument (flowmeter) in the metering system of the measuring accuracy of existing centrifugal metering pump, its relative error generally reaches ± and 0.3～0.6%, from this point, its precision of metering system of counting sensor with flow is limited, can not arbitrarily improve.This novel electron metering pump has overcome the low two big weakness of the low delivery pressure of existing product measuring accuracy, compares with existing metering pump, and this electronics metering pump relative error value is dwindled (± 0.046%) more than 10 times; Delivery pressure reaches as high as 0.8Mpa, is 2.6 times of existing product.

2, cost of production is low.The cost of production of electronics metering pump metering system only is 1/20 of existing centrifugal metering pump metering system (counting main metering system with flow), and owing to extensively adopt integrated component, stable and reliable for performance.

3, easy to use.The electronics metering pump can be by adding up or two kinds of patterns metering of successively decreasing shows, and autostop.Unit of measurement can be by usage requirement conversion (as: liter, kilogram, ton etc.)

4, of many uses.The maximum outlet pressure of electronics metering pump reaches 0.8Mpa, is 2.66 times of existing centrifugal metering pump.The delivery pressure height makes this machine purposes more extensive, can be used for filtering technologies such as processing, reverse osmosis, high-order conveying, this be centrifugal metering pump can't be obtained.

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 is the utility model pump body structure figure, is plan view;

Fig. 2 is the utility model pump body structure figure, is left view;

Fig. 3 is that the K of Fig. 1 is to view;

Fig. 4 is an electronics metering display circuit skeleton diagram;

Fig. 5 is electronics metering display circuit figure.

With reference to Fig. 5, circuit main devices model and pin code name are as follows:

19(GK) the photoelectric sensor GK985L of band Schmidt circuit

77 sensor output terminals

78 probe power ends

IC1, IC2, IC3, IC4: can preset several two---decimal system 1/N counter CC14522

1,11,21,31 each integrated package clock pulse terminal

2,12,22,32 each integrated package preset and allow end

9,19,29,39 cascade feedback input ends

8,18,28,38 cascade output terminals

10,20,30 terminal count outputs

3,13,23,33 zero clearing control ends

4～37 initialize data input ends

IC5 reversible counting display device CL412 is a CMOS-LED photoelectricity assembly parts, four demonstrations

41～57 initialize data input ends

40 power-s are extreme

58 power inputs

The public negative pole end of 59 display tubes

60 counter borrow output terminals

61 counter O reset control ends

62 preset number allows end

63 plus coujnt clock pulse input terminals

64 subtraction counting clock pulse input ends

IC6 33 input ends or door integrated package C4075

65,66 input ends

67 output terminals

IC7 hex inverter C4069

73 input ends

72 output terminals

The two principal and subordinate's D flip-flop CO43 of IC8

69 input ends

70 output terminals

71 clock pulse terminals

68 reversed-phase outputs ( End)

74 put number allows end

JQX DC relay JQX-10F/2Z

75,76 input end pin

DK1 triode 3DK2B

DK2 triode 3DK4B

D diode 2CP12

With reference to Fig. 1～Fig. 5; it is the characteristic of steady state value that this electronics metering pump makes full use of gear pump revolution Theoretical flowing capacity; take the mode of photoelectricity coupling to obtain pulse electrical signal from a rotating shaft of pump; again this signal being carried out frequency division handles; finally make between electrical pulsing signal and the practical unit of measurement (as: kilogram, ton, rise, cubic meter etc.) and set up relation one to one, and drive count display with this and dynamically show quantity delivered and regularly shut down.Working principle and running are as follows: each teeth groove of pump middle gear 20 and pump body inwall all form the small confined space of a constant volume, the liquid of ingress rotates under the suction function that forms full in these enclosed spaces at gear 20, pushed to liquid outlet along with gear 20 rotations.The small confined space volume sum that all teeth groove and pump body inwall form on the gear 20 just constitutes the Theoretical flowing capacity of pump, the i.e. quantity delivered of pump revolution.For the gear pump of a fixed structure, Theoretical flowing capacity is a steady state value.Owing in a rotating shaft 21 of pump signal porose disc 16 is installed, the moving circle of gear pump revolution just can be obtained a pulse signal by the photoelectricity coupling, has therefore set up the corresponding relation between the quantity delivered of electrical pulsing signal and pump.Be the conveying liquid of the corresponding discharge capacity of each pulse signal in the coupling circuit.Pump delivery designs very for a short time, practical unit of measurement, as: kilogram, ton, liter, cubic meter etc. are equivalent to the summation (several times that promptly are equivalent to pump delivery) of some discharge capacities, because the pulse signal that is coupled to is only corresponding one by one with the conveying liquid of a discharge capacity, thereby can not directly be used for driving count display, between coupling circuit and counting display circuit, be provided with frequency dividing circuit for this reason.The effect of frequency dividing circuit is that the pulse signal that coupling circuit is exported is carried out calculation process, set up relation one to one between the practical unit of measurement that makes final pulse signal and select, and with sort signal drive straight the counting display circuit count (amount) and dynamically the demonstration quantity delivered can preset divider ratio owing to frequency dividing circuit, thereby can arbitrarily change unit of measurement, can compensate error in dipping effectively, keep enough accuracy.After predetermined quantity delivered was finished, the counting display circuit just sent a pulse signal to shutdown control circuit, and it is electric that relay in the shutdown control circuit is got, relay get electric after, its normally closed interlock that is connected on the motor power disconnects, and blocks motor power and shuts down.

Running:

The first step: frequency dividing circuit is put number

Determine the divider ratio N that frequency dividing circuit should preset according to the proportionate relationship between the design discharge capacity of employed unit of measurement and pump.With divider ratio N, ten, hundred, kilobit insert by toggle switch BK1, BK2, BK3, BK4 integrated IC1, IC2, IC3, IC4 data input pin 4～37.Then, press load switch T1, just finish and put number.If do not change unit of measurement, only need put number once in the use.Change unit of measurement and must put number again frequency dividing circuit.

Second step: configure the metering display mode

The just replaceable quantitative model of throw over switch K between contact 63,64.K is left the subtraction quantitative model, and promptly display device is shut down to zero by presetting digital countdown.K is to the right the addition quantitative model, and promptly display device returns zero also shutdown after being added to preset quantity from zero.

The 3rd step: preset quantity delivered.

Terminal 57～54,53～50,49～45,44～41 be respectively quantity delivered, ten, hundred, kilobit put the number end.Through toggle switch BK8, BK7, BK6, BK5 with quantity delivered, ten, hundred, kilobit puts respectively, then by underlying numerical control system switch T3, total data enters counter and demonstration.Put count up to complete.

The 4th step: primer pump:

(380V, 50f), motor drives the pump rotation through belt 14 and belt pulley 15 to connect motor power.Being transferred liquid begins to flow to fluid mouth 23 from liquid inlet port 1 after one's death through pump.Meanwhile signal porose disc 16 whenever turns around with axle 21, photoelectric sensor 19(GK) just obtain a pulse signal.This pulse signal reaches the counting display circuit behind frequency dividing circuit, make display device dynamically show delivery value and count automatically in inside.

The 5th step: shut down

When arriving, presets when several the inner counting of counting display circuit; end pin 60 outputs one pulse signal reaches the clock pulse terminal 71 of IC8, thereby makes the output terminal 70 of IC8 be in high petential to No. 73 terminals of halt circuit after IC7 is anti-phase; so triode DK1, DK2 conducting, relay J QX gets.Relay gets its normally closed interlock that is connected on the motor power road of electric back and disconnects, and motor power is blocked and shuts down.

More than be proper functioning circular flow process, if when operation, it is wrong to put logarithmic data, presses nulling button T2 and can remove the frequency dividing circuit data and put number again, presses switch T4, and the data that then can remove in the count display are put number again.Cause exceeding standard of measuring accuracy as wearing and tearing or other reason, can compensate by the divider ratio of suitable adjustment frequency dividing circuit because of pump.

Claims

1, a kind of electronics metering pump is characterized in that: it is made of the pump housing and electronics metering display circuit, and the pump housing is by the motor linkage of belt pulley (15), v belt (14), axle (21) and frame;

The pump housing is made of pump body and pump seat; The pump body comprises liquid inlet port (1), pad (2), bolt (3), end cap (4), middle ring (5), end cap (6), axle (10), gear (20), axle (21), fluid mouth (23), two rotating shafts (10), (21) be monolateral supporting means, preceding supporting point has (9) 2 on bearing, back supporting point has (9) 1 on bearing, gear (20) engagement is in cantilever-shaped, 1 mechanical seal ring (7) and oil deflector (8) respectively are housed on diaxon, axle (10) is by stifle (12) axial limiting, axle (21) is by saturating lid (13) axial limiting, in axle (21) end belt pulley (15) is housed, with signal porose disc (16), this signal porose disc (16) is fastened on axle (21) end, liquid inlet port (1) with end pad (17) and screw (18), fluid mouth (23) is fixed on the end cap (4) by screw thread; Pump seat comprises support (11), stifle (12), saturating lid (13); The pump body is fixing with the support (11) of pump seat by 6 bolts (3), 2 straight pins (24) and bearing (9); Support (11) links with 4 screws (22) and frame; The photoelectric sensor " 19 " of electronics metering display circuit (GK) also is screwed on frame;

Electronics metering display circuit is made up of coupling circuit, frequency dividing circuit, counting display circuit, four parts of shutdown control circuit, coupling circuit connects with frequency dividing circuit, frequency dividing circuit connects with the counting display circuit by K switch, and the counting display circuit connects with shutdown control circuit;

Coupling circuit is made up of a photoelectric sensing road (GK) and a resistance (R37) that has Schmidt circuit, it be fixed on the signal porose disc (16) of axle on (21) and match, the output terminal 77 of sensor (GK) links to each other with the clock pulse terminal 1 of (IC1) in the frequency dividing circuit, and its power input 78 connects positive source.Resistance (R37) is connected between terminal 77 and 78;

Frequency dividing circuit comprises four integrated (IC1), (IC2), (IC3), (IC4), four toggle switch (BK1), (BK2), (BK3), (BK4), 18 resistance (R1)～(R16), (R33), (R34), two electric capacity (C1), (C2), two key switches (T1), (T2), wherein four intergrated circuit are CC14522-and can preset several binary coded decimal 1/N counters, and its connection is as follows: (IC1) clock pulse terminal 1 links to each other with the Out let of coupling circuit; (IC1) terminal count output 10 links to each other with (IC2) clock pulse terminal 11; (IC2) terminal count output 20 links to each other with (IC3) clock pulse terminal 21; (IC3) terminal count output 30 links to each other with (IC4) clock pulse terminal 31; (IC1) cascade feedback input end 9 links to each other with (IC2) cascade output terminal 18; (IC2) cascade feedback input end 19 links to each other with (IC3) cascade output terminal 28; (IC3) cascade feedback input end 29 links to each other with (IC4) cascade output terminal 38; (IC4) cascade feedback input end 39 connects positive source; Four integrated initialize data input terminals 4～37 link with toggle switch (BK1), (BK2), (BK3), (B4K) respectively, and per four terminals are one group; Toggle switch all is connected to positive source, connecting resistance (R1)～(R16) on terminal 4～37 and by distinguishing; Four integrated preset allows end 2,12,22,32 link to each other jointly with (IC1) cascade output terminal 8, this node one end links to each other with positive source through load switch (T1), the other end is connected to the throw over switch (K) in the counting display circuit, this node is the frequency dividing circuit Out let, zero clearing control end 3 with four integrated, 13,23,33 are linked as a bit jointly, this node one end links to each other with positive source through reset switch (T2), the other end reaches the input terminal 65 of (IC6) in the shutdown control circuit, at switch (T1), (T2) be parallel with electric capacity (C1) on, (C2) and each other resistance (R33) that connects, (R34);

Counting display circuit main devices (IC5) is the reversible counting display device (CL412) of four demonstrations, it is a CMOS-LED photoelectricity assembly parts, this circuit also includes four toggle switch (BK5) in addition, (BK6), (BK7), (BK8), 18 resistance (R17)～(R32), (R35), (R36), three switches (K), (T3), (T4) two electric capacity (C3), (C4) voltage-stabiliser tube (WD), its connection is as follows: initialize data input end 41～57, one group on per four pin, respectively with toggle switch (BK5), (BK6), (BK7), (BK8) link, and an other separately resistance (R17)～(R32) positive source is connected to toggle switch (BK5), (BK6), (BK7), (BK8) and power input (IC5) 40, (IC5) presetting number allows end 62 to be connected to positive source through switch (T3), switch (T3) is gone up an electric capacity in parallel (C3), the side connects a resistance (R35), terminal 62 is connected to the input end 66 of (IC6) in the shutdown control circuit simultaneously, (IC5) the zero clearing control end 61, (T4) links to each other with positive source through switch, switch (T4) is gone up an electric capacity in parallel (C4), the side connects a resistance (R36) and shields, (IC5) the public negative pole of display tube 59 serial connection voltage-stabiliser tubes (WD) (IC5) borrow output terminal 60 that links to each other with power cathode terminal 58 links to each other with the input end 73 of (IC7) in the shutdown control circuit in, is the Out let of counting the display line circuit;

Shutdown control circuit is by integrated (IC6) (or door CC4075); (IC7) (phase inverter C4069); (IC8) (d type flip flop CO43); resistance (R38) (R39); triode (DK1); (DK2) diode (D); relay (JQX) is formed; its connection is as follows: (IC6) output terminal 67 is put to count with (IC8) and is allowed end 74 to link to each other; (IC8) input end 69 links to each other with the reversed-phase output (Q end) 68 of self; (IC7) output terminal 72 links to each other with (IC8) clock pulse terminal 71; (IC8) output terminal 70 links to each other with three B utmost point pipe (DK1) base stages through resistance R 38; (DK1) emitter with (DK2) link; between (DK2) base stage and emitter and connect a resistance (R39); (DK1); (DK2) collector electrode links to each other; link to each other with the positive level of power supply after being connected in series relay again, relay two ends parallel diode (D) shield.