CN2174575Y - Bellows metering pump - Google Patents
Bellows metering pump Download PDFInfo
- Publication number
- CN2174575Y CN2174575Y CN 92238123 CN92238123U CN2174575Y CN 2174575 Y CN2174575 Y CN 2174575Y CN 92238123 CN92238123 CN 92238123 CN 92238123 U CN92238123 U CN 92238123U CN 2174575 Y CN2174575 Y CN 2174575Y
- Authority
- CN
- China
- Prior art keywords
- pump
- plunger
- valve
- worm
- hydraulic chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a diaphragm type metering pump, comprising a box body, a pump body, a drive body, a transmission speed reducing mechanism, a movable joint, a linkage plate, a main plunger piston, an auxiliary plunger piston, a measurement mechanism, a safety valve, an inlet valve, an outlet valve, a hydraulic chamber, etc. The pump utilizes the reciprocating movement of the main plunger piston with constant travel range to change the capacity of hydraulic oil in the hydraulic chamber, and thus a diaphragm pulsates for continually sucking and draining liquid. The aims of regulating flowrate via the measurement mechanism through the conveying action of liquid medium by the inlet valve and the outlet valve are obtained. The pump has simplified structure, the plunger piston makes motion within a fixed travel range, former dead point change is eliminated, the volumetric efficiency and the measuring accuracy of the pump are ensured, the aim of adding the measurement mechanism is obtained, and oil quantity can be regulated accurately, stably and reliably.
Description
The utility model relates to a kind of reciprocating pump that can measure conveying liquid.
Metering pump can not only measure conveying liquid, and in operation process, flow can be on demand near carrying out step-less adjustment in 0%～100% scope, can measure the liquid of being carried, and can satisfy certain measuring accuracy requirement, measuring accuracy is ± 1%, because metering pump has the operational efficiency height, the advantage that suction performance is good, be widely used in metallurgy, electric power, chemical industry, oil, environmental protection, light textile, papermaking, food, plastics, aspects such as pharmacy are commonly used to carry inflammable, explosive, poisonous, radioactivity and high temperature are arranged, high viscosity, suspension, liquid mediums such as liquefaction vapour or liquid metal.The structure of the diaphragm metering pump in the known technology comprises mechanical transmission end and fluid end, it is reciprocating that the structure of driving end adopts prime mover, reducing gear, connecting rod promotes plunger, and by N type bent axle length of stroke controlling mechanism pilot plunger stroke, though this structure can be born bigger piston force, but because preceding dead point changes, influence volumetric efficiency and measuring accuracy, and complex structure, the manufacturing process difficulty is big.Fluid end is made up of diaphragm cavity and three valve members (safety valve, bleed valve, recuperation valve), by the to-and-fro motion of plunger, promotes liquid and makes barrier film do cyclomorphosis through hydraulic driving, thereby reach the purpose of suction fed sheet of a media.This complex structure, the cost height, inconvenient maintenance, the particularly manufacturing of three valve members require and operation is had relatively high expectations.
The purpose of this utility model is to overcome defective of the prior art and provides a kind of simple in structure, volumetric efficiency height, measuring accuracy height, diaphragm metering pump easy to maintenance.
Embodiment of the present utility model is to adopt the reciprocating volumetric pump that diaphragm apparatus is arranged, in the housing cavity that it is made up of casing, pump power end and fluid end are housed, the transmission speed reducer structure of power end connects the pump housing parts and the pump head parts of fluid end by union, pump housing parts comprise main plunger, the plunger bushing that is threaded with union, pair plunger that the interlock plate connects.The top of main plunger is a safety valve, and hydraulic chamber is arranged in the pump housing.The pump head parts comprise pump cover, inlet/outlet valve.And the accent measuring mechanism of regulating flow is set in the pump housing.
Rotatablely moving of transmission speed reducer structure converts straight reciprocating motion main, that pay plunger to, make hydraulic oil produce volume change, thereby make diaphragm produce pulsation and constantly suck and discharge, finish the conveying action of liquid medium, and by transferring measuring mechanism to realize the purpose of Flow-rate adjustment.
The utility model is the improvement of existing diaphragm pump, has cancelled a cover N type bent axle length of stroke controlling mechanism for power end, makes plunger reciprocating with a fixing stroke, has eliminated the variation at preceding dead point, thereby has guaranteed the volumetric efficiency and the measuring accuracy of pump.Fluid end has removed two valve oil cup parts, only with a cover relief valve assembly, sets up the accent measuring mechanism, makes Flow-rate adjustment accurate more, stable, reliable.The design has not only improved volumetric efficiency and measuring accuracy, because designs simplification has reduced parts in addition, so reduced manufacture cost, uses easy to maintenance simultaneously.
Description of drawings.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 transfers measuring mechanism structure enlarged view for Nol.
Fig. 3 is a principle schematic.
Below will be further elaborated according to above-mentioned accompanying drawing embodiment.
The housing of diaphragm metering pump (seeing Fig. 1～3) connects into the housing with chamber by casing (11), the pump housing (3) with locating stud and screw, and the transmission speed reducer structure of power end and the pump housing parts and the pump head parts of fluid end are housed in the chamber.The transmission speed reducer structure is with prime mover ac three-phase asynchronous motor outputting power, worm screw (16) is housed on the motor shaft, worm screw (16) and worm gear (12) engagement driving, and worm gear (12) is connected with worm-wheel shaft (8) by key (13), worm-wheel shaft (8) is bearing on casing (11) ball bearing (15), on the axle eccentric wheel (14) is housed, utilize the transmission that matches of the protruding key of eccentric wheel (14) and the groove on the worm gear (12), back-up ring (10) and plane bearing (9) also are housed on the worm-wheel shaft (8), and effect is the axial displacement of control worm-wheel shaft (8).Connecting rod (7) one ends slide on the eccentric wheel (14), and the other end is hinged by straight pin (6) and union (4).
Pump housing parts comprise the main plunger (19) that is threaded with union (4); plunger bushing (18) is arranged outward; lock by nut (17); safety valve (21) is equipped with on its top; when outlet pressure was higher than setting value, safety valve (21) was opened, and hydraulic oil enters fuel tank; pump quits work, and has protected whole system.The interlock plate (5) fixing with union (4) is connected a pair plunger (23).In the pump housing (3), a hydraulic chamber is arranged, it has two confinement plates (33) of configuration relatively, be provided with diaphragm (37) between the two poles of the earth, have 4 axial aperture (34) on the confinement plate (33), hydraulic chamber (32) in the confinement plate on the left side (33) forms with the pump housing (3), this chamber communicate with the principal post consent and via through holes (31) communicates with transferring measuring mechanism (1).
Transfer measuring mechanism (1) to comprise that handwheel (30) fixedlys connected by propping up a head screw with moving dial drum (29), screw rod (26), screw rod (26) matches with nut (27) the screw thread slip that is fixed on the pump housing (3) simultaneously, outer being equipped with of nut (27) decided dial drum (28), the other end of screw rod (26) is connected with control amount circle tube (24) by straight pin (25), and this circle tube is slidingly matched with a pair plunger (23).Have many rows a plurality of by-pass holes (22) on the control amount circle tube (24), this pore size distribution on cross section separated by a distance and circumference uniform distribution, and the by-pass hole on the adjacent cross section (22) mutually dislocation arrange.
The pump head parts are overcurrent liquid parts, comprise pump cover (36) and inlet/outlet valve (20), (2), and the confinement plate (33) on pump cover (36) and the right constitutes the fluid passage (35) of outer hydraulic chamber.Unidirectional cone valve of two pass or ball valve can be adopted in inlet/outlet valve (20), (2), and this pump adopts the two pass cone valve structure.
The course of action of this pump is as follows: motor power transmits the straight reciprocating motion that will be rotatablely moved and be converted to the master, pay plunger (19), (23) by eccentric wheel (14), connecting rod (7) mechanism through worm screw (16) and worm gear (12).The stroke reciprocating that main plunger (19) fixes acts in the hydraulic chamber with regard to the hydraulic oil that sucks (discharge) one fixed capacity, makes flexible polytetrafluoroethylene diaphragm (37) produce the front and back pulsation, thereby makes the pump action.Regulate oil mass and be by paying plunger (23) and open by-pass hole (22) on (closing) control amount circle tube (24), promptly press and decide, move the scale value on dial drum (28), (29) by handwheel (30), regulate the relative position of control amount circle tube (24), change the capacity of hydraulic oil, reach the purpose of Flow-rate adjustment.Flexible diaphragm (37) is separated into inside and outside two Room with hydraulic chamber, and moves between the overcurrent liquid under hydraulic oil and the pumping action, i.e. overcurrent liquid hydraulic chamber suction outside and discharge.The hydraulic chamber bypass circulation enters fuel tank then by interior hydraulic chamber (32) via through holes (31), by-pass hole (22) and control amount circle tube (24).Pay plunger (23) the direct linkage that links to each other with main plunger (19), regulate control amount circle tube (24) and the relative position of paying plunger (23), in 0～100% running length scope, bottle up by-pass hole (22), reach the actual volume that changes hydraulic chamber, control the relative suction and the discharge flow rate of the overcurrent liquid in the outer hydraulic chamber.
Claims (5)
1, a kind of diaphragm metering pump, connect into housing by the casing (11) and the pump housing (3) with chamber, transmission speed reducer structure as power end is housed in the housing cavity, it is by the pump housing parts of union (4) connection as fluid end, these parts comprise the main plunger (19) that is threaded with union (4), plunger bushing (18) is arranged outward, and the interlock plate (5) that is connected with union (4) connects pays plunger (23); Safety valve (21) is equipped with on the top of main plunger (19); One hydraulic chamber of being made up of diaphragm (37), confinement plate (33) is arranged in the pump housing (3); By the pump head parts that pump cover (36), inlet/outlet valve (20), (2) are formed, it is characterized in that in the pump housing (3), being provided with the accent measuring mechanism (1) that communicates with hydraulic chamber.
2, metering pump as claimed in claim 1, it is characterized in that described transmission speed reducer structure comprises that worm screw (16) is housed on the motor output shaft to be meshed with worm gear (12) on the worm-wheel shaft (8), worm-wheel shaft (8) is bearing on casing (11) ball bearing (15), the groove of the protruding key of eccentric wheel (14) and worm gear (12) matches, back-up ring (10) and plane bearing (9) are housed on the worm-wheel shaft (8), connecting rod (7) slides on the eccentric wheel (14), and hinged by straight pin (6) and union (4).
3, metering pump as claimed in claim 1, it is characterized in that described accent measuring mechanism (1) comprises that handwheel (30) and moving dial drum (29), screw rod (26) are fixing, screw rod (26) matches with nut (17) the screw thread slip that is fixed on the pump housing (3), outer being equipped with of nut (17) decided dial drum (28), the other end of screw rod (26) is connected with control amount circle tube (24) by straight pin (25), and this circle tube is slidingly matched with a pair plunger (23).
4, metering pump as claimed in claim 3 is characterized in that having by-pass hole (22) on the control amount circle tube (24), and this pore size distribution is on cross section separated by a distance and circumference uniform distribution, and the by-pass hole on the adjacent cross section (22) dislocation mutually.
5,, it is characterized in that inlet/outlet valve (20), (2) employing two pass cone valve or ball valve as claim 1 or 2 or 3 or 4 described metering pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92238123 CN2174575Y (en) | 1992-10-09 | 1992-10-09 | Bellows metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92238123 CN2174575Y (en) | 1992-10-09 | 1992-10-09 | Bellows metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2174575Y true CN2174575Y (en) | 1994-08-17 |
Family
ID=33779226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92238123 Expired - Fee Related CN2174575Y (en) | 1992-10-09 | 1992-10-09 | Bellows metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2174575Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518574A (en) * | 2012-01-09 | 2012-06-27 | 马鞍山基业环保科技有限公司 | Dual-regulating low-pulse diaphragm metering pump with two pump heads |
-
1992
- 1992-10-09 CN CN 92238123 patent/CN2174575Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518574A (en) * | 2012-01-09 | 2012-06-27 | 马鞍山基业环保科技有限公司 | Dual-regulating low-pulse diaphragm metering pump with two pump heads |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102175387B (en) | Rolling friction cylinder hydraulic type force standard machine | |
| CN111173725B (en) | Device is verified in vice technological research of plunger pump key friction | |
| CN202520500U (en) | Precision metering pump driven by ultrasonic motor | |
| CN2174575Y (en) | Bellows metering pump | |
| CN2818842Y (en) | Electromagnetic diaphragm metering pump | |
| CN208277515U (en) | A kind of hydraulic pressure-mounting machine Hydraulic Power Transmission System | |
| CN213655331U (en) | Hydraulic system for condenser forming machine | |
| CN201013549Y (en) | Metering pump | |
| CN207513811U (en) | A kind of hydraulic pump of adjustable pressure | |
| CN2338506Y (en) | Directly controlled type diaphragm metering pump | |
| CN214888086U (en) | Hydraulic equipment with oil leakage early warning device for production of mining machine parts | |
| CN101701581A (en) | Intelligent adjustable variable flow gear pump device | |
| CN213064668U (en) | Novel valve capable of adjusting flow velocity | |
| CN110043526B (en) | Direct-acting overflow motor and hydraulic source loop thereof | |
| CN209604344U (en) | A kind of feeding hydraulic system | |
| CN112377645A (en) | Beverage quantitative distribution valve | |
| CN212458748U (en) | Piston pressure gauge | |
| CN206522231U (en) | Motor overhead hydraulic pump | |
| CN101761521A (en) | Precision load positioner | |
| CN218062855U (en) | Power device with energy recycling and speed regulating functions | |
| CN217129763U (en) | Valve assembly device of petroleum pump | |
| CN2055820U (en) | Electric fuelling device with doublegun electronic counter | |
| CN109268245A (en) | A kind of vacuum oil pumping system | |
| CN208311017U (en) | A kind of booster-type membrane pump outlet flow and stable water pressure device | |
| CN204061122U (en) | A kind of diaphragm metering pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |