CN2491620Y

CN2491620Y - Efficiency metering diaphragm pump

Info

Publication number: CN2491620Y
Application number: CN 01245153
Authority: CN
Inventors: 李雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-31
Filing date: 2001-07-31
Publication date: 2002-05-15
Anticipated expiration: 2011-07-31

Abstract

The utility model discloses a high efficient metering-diaphragm pump comprising a motor, a stand, a gearbox, a pump head, a piston rod, a diaphragm, a flow controlling mechanism and the like. The flow controlling mechanism is composed of a stroke controlling screw, a ram, a handle disposed in the stroke controlling screw, and the like, wherein a spring is mounted on the stroke controlling screw, the ram is positioned in the stroke controlling screw, the front end of the ram presses the piston rod and the rear end is connected to the handle. The bottom of a pump shell is equipped with balancing holes. The utility model has compact and reasonable structure, high transferring pressure, reliable driving, convenient and accurate flow adjustment, long durability, and can effectively prevent material pollution resulting from hydraulic-oil.

Description

Efficient metering diaphragm pump

The utility model belongs to the improvement of measuring diaphragm pump.

Existing metering diaphragm pump, must conduct power with oil medium as No. 92238123 disclosed a kind of diaphragm pumps of utility model patent, after radially power changes straight line power into motor, by straight-line plunger or piston power is sent to hydraulic oil, be sent to diaphragm of diaphragm pump through hydraulic oil again.The major defect of above-mentioned diaphragm pump: 1, be the diaphragm cracky, in case diaphragm breakage, the hydraulic oil of conduction power can enter transported substance by damaged diaphragm, contaminated material.At dye industry, can make inventory disposal by the gross especially, cause the tremendous economic loss.2, Flow-rate adjustment is operated by rule of thumb, and is very inconvenient, and for fear of diaphragm breakage, contaminated material at industry people such as coating, dyestuff, printing ink gear pump commonly used or gear hobbing pump, is carried the slurry pump as brush sander.Use gear pump and gear hobbing pump to carry the major defect of slurry to be: 1, easily produce mechanical wear, working life is short; 2, material suction vacuum and slurry carry to press less, can not transfer of highly viscous and contain the slurry of solid particle; 3, must use speed-adjustable motor, corollary equipments such as speed control switch, it is big to take up room, cost an arm and a leg, and fragile; 4, can only regulate flow by rule of thumb, validity is poor; 5, leak the material phenomenon because the wearing and tearing of stuffing box packing or mechanical seal unavoidably can produce wearing and tearing, can cause loss of material and place to pollute.

The purpose of this utility model provides a kind of compact structure, installing space is little, and the slurry discharge pressure is big, reliable transmission, Flow-rate adjustment accurately, convenient, can effectively avoid contaminated material, long service life and the efficient metering diaphragm pump that does not leak.

The utility model comprises pump head 4, lay respectively at the feeding valve 5 and the discharge valve 2 at pump head 4 two ends, with pump head 4 affixed all-in-one-piece pump cases 9, setting sleeve 10 and transmission case 11, diaphragm 7 in the pump case 9, liner 8, the piston rod 13 that is connected with diaphragm 7, and driving mechanism, flow control device, uprightly be fixed on the motor 15 on the support 16, be set with spring 12 on the setting sleeve 10, said flow control device 19 is by the stroke adjustment nut 19-5 that is packed in transmission case 11 lower right parts, push rod 19-1 in the stroke adjustment nut 19-5 and handle 19-7 form, be set with spring 19-4 in the stroke adjustment nut 19-5, push rod 19-1 is positioned at stroke adjustment nut 19-5, the front end of push rod 19-1 withstands piston rod 13, the affixed handle 19-7 in rear end.Housing 9 bottoms have additional liquid small opening 9 ', oil hole 14 is set up on transmission case 11 tops, the bottom is provided with oil extraction double-screw bolt 20.The working surface of diaphragm 7 is provided with fluorine plastics combined layer.

Piston rod drives the diaphragm to-and-fro motion during the utility model work, and the volume of pump head cavity is changed, and under the cooperation of unidirectional charging and discharging valve, when volume increases, produces negative pressure in the pump head, and slurry sucks pump head by feeding valve 5; When volume reduced, slurry was oppressed by diaphragm, produced malleation, made slurry pass through discharge valve 2 and discharged pump head.The handle of rotating distance controlling mechanism makes the push rod to-and-fro motion, because of the front end of push rod directly withstands the piston rod right-hand member, plays the effect of the limited piston throw of lever, in order to regulate flow.Be marked with the graduation line of 10% unit as the stroke adjustment Nut column, handle is marked with 1% unit scale, just can control metering accurately and visually.The effect of equalizing orifice both can make air balance in the pump case chamber, found during postscript the diaphragm breakage to prevent the medium pollution material.In a word, the utility model compact structure, to occupy the space little.Mass transport pressure is big, and Flow-rate adjustment is accurately convenient, long working life.

Accompanying drawing 1 is the utility model example structure schematic representation.

Accompanying drawing 2 is the flow control device structural representation.

Further describe the utility model below in conjunction with drawings and Examples.

The utility model adopts the vertical mounting type of motor, and motor 15 uprightly is fixed on the motor cabinet 16, and joint seals with the O RunddichtringO, and motor cabinet 16 is connected with transmission case 11.A pair of miniature couplings is installed in the motor cabinet 16, is used for connecting, transmitting the power of 11 interior worm gears, worm screw from motor 15 to transmission case.This driving mechanism is a prior art, and 17 is that eccentric shaft, 18 is bearing seen in the figure.Worm gear is fixed on the eccentric shaft 17, E level 6202 bearings are installed at eccentric shaft 17 two ends, the eccentric part of eccentric shaft 17 is installed 6107 bearings, worm gear and eccentric shaft 17 rotate simultaneously, make 6107 bearings make eccentric rotary, directly promote piston rod 13 motions, the off-centre of eccentric shaft 16 can be 5mm, and the maximum piston row throw of lever can be 10mm.Piston rod 13 is installed in the setting sleeve 10, and pocketed springs 12 on the setting sleeve 10, and copper sheathing is housed in the setting sleeve, and offers oil groove, to guarantee piston column operation balance, resets in time.Piston rod 13 tops connect alloy aluminum liner 8 and diaphragm 7 piston rods 13 promote diaphragm 7 smooth reciprocation in pump case 9.Pump head 4 is affixed with pump case 9, the pump case bottom have equalizing orifice 9 '.Pump case 9, pump head 4 two ends connect unidirectional feeding valve 5 and discharge valve 2 respectively.3 is valve ball.Be connected respectively on feeding valve 5 and the discharge valve 2 charging take over 6 and discharging go out pipe 1.Transmission case 11 upper ends are provided with oil hole 14, and the bottom is provided with oil extraction double-screw bolt 20.Frontal left can be established Mirror for indicating oil level, so that refuel, drain the oil, control the oil mass of lubricant oil, guarantees the lubricated of transmission case 11 interior workpieces.Oil resistant O RunddichtringO all should be adorned in the position that whole transmission case need seal.19-2, the 19-3 of accompanying drawing 2 flow control devices, 19-6 are the O RunddichtringO.

Claims

1, a kind of efficient metering diaphragm pump, comprise pump head (4), lay respectively at the feeding valve (5) at pump head (4) two ends, discharge valve (2), with the affixed all-in-one-piece pump case of pump head (4) (9), setting sleeve (10) and transmission case (11), diaphragm (7) in the pump case (9), the piston rod (13) that liner (8) is connected with diaphragm (7), and driving mechanism, flow control device and uprightly be fixed on motor (15) on the support (16), it is characterized by and be set with spring (12) on the setting sleeve (10), said flow control device (19) is by the stroke adjustment nut (19-5) that is packed in transmission case (11) lower right part, push rod (19-1) in the stroke adjustment nut (19-5) and handle (19-7) are formed, be set with spring (19-4) in the stroke adjustment nut (19-5), push rod (19-1) is positioned at capable adjusting nut (19-5), the front end of push rod (19-1) withstands piston rod (13), the affixed handle in rear end (19-7).

2, by the described a kind of efficient metering diaphragm pump of claim 1, it is characterized by pump case (9) bottom and be provided with equalizing orifice (9 '), transmission case (11) top is provided with oil hole (14), and the bottom is provided with oil extraction double-screw bolt (20).

3, by the described a kind of efficient metering diaphragm pump of claim 1, the working surface that it is characterized by diaphragm (7) is provided with fluorine plastics combined layer.