CN2489113Y - Peristaltic pump head - Google Patents

Abstract

The utility model discloses a pump head of peristaltic pump. A groove cam plate 5 which is arranged on a bearing base of a body 1 swings positive or negative 20 degrees in relative to a vertical center line of a spindle 4. By use of a pine 6, the utility model can drive a pressing block 2 to ascend and descend to limit place and then to be positioned in a tooth space A by use of the spring point 10. The utility model has the function of fine adjusting the clamping tube clearance in a changing range of 1 millimeter and in an interval of 0.1 millimeter.

Description

The peristaltic pump pump head

The utility model relates to a kind of peristaltic pump pump head.Be that swing by the grooved cam plate drives the briquetting upper and lower displacement, finish pump head the compressing and loosen of elastic hose, and peristaltic pump pump head that can micro-adjustable clamp ligament.

At present mostly the pump head of similar products at home and abroad is to drive that eccentric wheel is finished the rising of briquetting, decline and in upper and lower limit position location by moving rod.The clamp gap that forms between the roller of the limit position pair roller device that briquetting descends is a definite value, is nonadjustable.The adjustment in clamp gap is to finish by other auxiliary device.

The purpose of this utility model is to have own intellectual property and have the peristaltic pump pump head of finely tuning the clamp gap function for exploitation.(hereinafter to be referred as pump head).

The utility model pump head is to constitute external shape by body, briquetting, supporting three big entities.The rotary roller level that rolling bearing is equipped with at two ends is installed in body and the supporting, and briquetting can be done displacement vertically on body.The utility model is to use the swing of grooved cam plate to drive the displacement vertically of briquetting and has the function of micro-adjustable clamp ligament.

So-called clamp gap is meant after briquetting drops to the limit position location and the gap value that forms between the rotation excircle track of rotary roller, the optimum value of this gap value should be to work as to compress elastic hose (hereinafter to be referred as flexible pipe), and pump head is started working promptly can be transported to the container of the other end reliably by flexible pipe by suction operation medium in the container.If the actual gap amount is a bit larger tham this numerical value,, promptly can destroy normal pumping action, cisco unity malfunction as defining with 0.1 millimeter.No matter flexible pipe, its clamp gap width of which kind of material or wall thickness dimension all can be less than 2 times thickness of soft tube actual sizes as can be known in actual measurement.Certainly, if actual clamp gap value during, be the excessive flexible pipe that compresses less than optimum value.This moment, pump head can proper functioning suction operation medium, but amount of over-pressurization is bigger, and the driver output power is bigger, and flexible pipe is lower working life.Also belong to non-the optimum state.Because the thickness of soft tube actual size that the supplier provides often has 0.1 millimeter dimensional variations amount, also owing to make every product pump head the variation in actual clamp gap can occur inevitably in pump head design and the manufacture process.For this reason, just must give the clamp gap value of an amount of over-pressurization when pump head designs in theoretical dimensional chain, generally be 0.1 millimeter value of several times.Only in this way could guarantee that every Tianwan businessman's product pump head is delivered to can both proper functioning in user's hand.

The utility model pump head is like this work: be installed on body and the bearing support the grooved cam plate can around the rotary roller alignment of shafts swing respectively 20 ° (relative body vertical center line ± 20 ° of scopes) in 20 ° of scopes of grooved cam plate upper edge rotating center scholar, have the groove of spiral of Archimedes, its groove adopts large pressure angle in 25 ° of scopes, can promote to be slidingly fitted in bearing pin in the groove after swinging 25 ° along 16 millimeters of body displacements vertically; And after 15 ° of scopes adopted little pressure angle to swing 15 ° in addition, groove can promote bearing pin along 1 millimeter of body displacement vertically.Article two, curve links to each other, and bearing pin is connected with briquetting, 16 millimeters lifting functions of finishing briquetting so the drive briquetting moves in 25 ° of scopes, 1 millimeter function of finishing fine setting clamp gap of motion in 15 ° of scopes.Method is that the motion of 15 ° of scopes is divided into 10 five equilibriums, be whenever to swing 1.5 ° and can make 0.1 millimeter of briquetting vertical up-or-down movement, make it in suitable angular range, to locate, can reach and in 1 millimeter scope, have 0.1 millimeter every grade totally 10 grades clamp gap adjustment amount.

Its embodiment is: the spring clip point is installed above the curve cam plate, above body and bonnet, 10 five equilibrium teeth groove that adapt with spring clip point position are arranged corresponding to doing in the 15 ° little pressure angle hunting ranges of grooved cam plate, the spring clip point can insert one of them teeth groove tightly under the pressure spring effect, also just make curve cam strip dynamic pressure piece be positioned at this tooth slot position, after the dead spring card point that press...withes one's finger makes it teeth groove, just can in 15 ° of pivot angle scopes, choose teeth groove that another is fit to wantonly with finger push grooved cam plate, unclamp finger and make the spring clip point spring into this teeth groove location, finish the adjustment of a gap value.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail

Accompanying drawing 1: be the vertical section schematic side view of the utility model easy assembling type pump head,

Fig. 2: be the schematic rear view of removing behind the bonnet 9,

Fig. 3: be front elevational schematic.

But pump head is by the briquetting 2 of body 1, upper and lower displacement on body, the supporting 3 of fixedlying connected with body, is installed in body and the supporting two ends and the rotary roller 4 of rolling bearing is housed and is sleeved on the back bearing support of body 1, with several main parts compositions such as grooved cam plate 5 that manually can make it around ± 20 ° of pump head alignment of shafts swings.Pump head shown in each figure is to be in the maximum crush state of elastic hose.When pushing the spring clip point 10 that slides in the grooved cam plate 5 top guide grooves downwards with finger, can make card point withdraw from corresponding consistent 10 A such as teeth groove such as branch such as grade that are distributed in 15 ° of scopes that all have on body 1 and bonnet 9, drive lobe plates 5 with finger push spring clip point 10 this moment can swing arbitrarily in 40 ° of scopes.The spiral of Archimedes of lobe plate 5 drives briquetting 2 by bearing pin 6 and rises to the high limit position place when being pushed to dead-centre position B clockwise, this moment, but pull-off spring card point 10, make it to spring among the teeth groove B, briquetting 2 just is positioned at the highest lifting position, can change, adjust the operation of elastic hose 7.5 reversing motions of actuating cam plate are when being distributed in 15 ° of scope internal spline section A but adjustment finishes, and can begin by maximum flow whenever to move the desirable about 0.1 millimeter clamp gap variable quantity of tooth slot position to minimum flow fine setting clamp gap.When pump head begins the suction operation medium, promptly best clamp gap location, pull-off spring card point 10 makes it to enter corresponding teeth groove location, and pump head drops into proper functioning.Adjust once more or when changing elastic hose, repeat said process and get final product.

For being stablized, elastic hose 7 is installed on the pump head, the roller 8 that can not be rotated when pump head is worked is being with play, so the spring card device is arranged: when briquetting 2 declines compress elastic hose 7, on the opening slot 13 that pressure spring 11 effect lower slider cards 12 also firmly are pressed on elastic hose 7 in the supporting 3 in the briquetting both sides.During work the play phenomenon can not take place.

Claims (4)

1, a kind of peristaltic pump pump head, by briquetting, the supporting of fixedlying connected of body, displacement vertically on body with body, form the gabarit shape, between body and supporting, the rotary roller that rolling bearing is equipped with at two ends is installed, it is characterized in that: being set with on the bearing support of body back can be around the grooved cam plate of the spiral of Archimedes type that has of pump head alignment of shafts swing, and the pin slide on the briquetting is engaged in the groove of lobe plate.

2, peristaltic pump pump head according to claim 1 is characterized in that: the groove curve of grooved cam plate is made up of two sections continuous spiral of Archimedes with different pressures angle.

3, peristaltic pump pump head according to claim 1, it is characterized in that: the spring clip point is housed above the grooved cam plate, when the wobble groove lobe plate, the spring clip point can be chosen in arbitrary teeth groove in one group of teeth groove that body and bonnet top is fan-shaped distribution and insert the location or withdraw from.

4, peristaltic pump pump head according to claim 1, it is characterized in that: in the die cavity of briquetting both sides, respectively be equipped with one and compress by pressure spring, the slip card that can stretch vertically, corresponding position has the opening slot that can hold the turnover of slip card in supporting.

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