CN2397095Y - Liquid precision filling valve - Google Patents

Abstract

The utility model relates to a liquid precision filling valve which has the structure that the bottom part of a liquid storing tank is provided with a valve body and a valve head arranged on the valve body. The upper end of the valve head is provided with a guide hole, the middle part is provided with a liquid inlet window, and the lower end is provided with a tapered liquid inlet. A limiting lug boss, a piston and a sealing ring are arranged in a piston cavity of one side of the valve body. An upper and a lower valve cores and a spring, which are sheathed together, are arranged in the guide hole of the valve head, and the upper end of the lower valve core is provided with a gas pipe and is sheathed with a sliding sleeve. The bottom part of the liquid storing tank is also provided with a guide pipe, and a top rod is arranged in the guide pipe. The bellows seal exists between the top rod and the guide pipe and between the gas pipe of the sliding sleeve and the upper valve core. The utility model has the advantages of high speed of filling and high precision.

Description

A kind of liquid precise quantity perfusion valve

The utility model relates to the liquid filling device technical field of liquid being injected (hereinafter to be referred as bottle) in the containers such as bottle.

At present, the quantitative perfusion valve that uses in filling liquid machinery is owing to be subjected to the influence of its structure, liquid is residual and wall built-up in valve pocket, and the bubble that is produced by turbulent flow, in the more delay valve pocket, cause filling accuracy not high enough, speed is fast inadequately, and damages bottle easily.

The purpose of this utility model is will provide a kind of to increase work efficiency and the liquid precise quantity perfusion valve of filling accuracy.

For achieving the above object, the technical solution of the utility model is: it comprises and is fixedly installed in fluid reservoir bottom, its lower end has the valve body of liquid outlet channel and is installed on the valve body its upper end and has pilot hole, middle part and have the valve head that feed liquor window, bottom have the taper inlet, the inwall formation stream line pattern valve pocket of valve head and valve body.In the pilot hole of valve head upper end the upper valve core that the lower end that can slide up and down has conical surface plush copper is housed, is with valve pad on the conical surface plush copper, be used to seal the taper inlet on the valve head.The bottom spool that can slide up and down is housed in the upper valve core, and the bottom spool lower end also has conical surface plush copper, is with down valve pad on it, is used for the liquid outlet channel of closed valve lower end.Between the conical surface plush copper of upper and lower spool the valve-closing spring that is sleeved on the bottom spool is arranged.Above upper valve core, there is its outside that is sleeved on bottom spool to have the sliding sleeve of annular groove.There is nut, packing ring and the tracheae that is contained in the bottom spool upper end sliding sleeve top.The ventilation orifice at bottom spool middle part communicates with atmosphere by this tracheae, between upper valve core, tracheae and sliding sleeve, by the sylphon seal of end chucking.Side at valve body also has a plunger shaft that communicates with main valve chamber, and piston and seal ring are housed in the plunger shaft, and plunger shaft is equipped with lid outward.Piston and plunger shaft are spacing by a boss.Also be installed with conduit in the fluid reservoir bottom, the conduit bottom is set with retracing spring, and the push rod of slippage up and down is housed in the conduit, and the push rod upper end is equipped with upper shift fork, pitch in the annular groove of sliding sleeve the end of upper shift fork, the sylphon seal that is also tightened by two ends between push rod upper end and conduit.Lower shift fork is equipped with in the lower end of push rod, outside the fluid of valve body lower end is logical, be set with the orientating device that the outside has translot, the end fork of lower shift fork is in the translot of orientating device, the translot downside of orientating device is equipped with steel ball and holder ball pin, have a tapered guide surface in it, above tapered guide surface, have vertical air flue, annular gas tank and pore.When orientating device is up when heading on flange on the valve body, liquid outlet channel does not enter bottleneck and just liquid is injected bottle.

Bottle rises, at first by the orientating device correcting and head on orientating device and rise together, make lower shift fork, push rod, upper shift fork and sliding sleeve with on move, under the effect of valve-closing spring power, upper valve core is closed inlet with moving on the sliding sleeve, and then sliding sleeve is mentioned bottom spool, open liquid outlet channel, liquid injects bottle, and gas is then discharged through pore by vertical air flue and annular gas tank in the bottle.Otherwise bottom spool moves down, and closes liquid outlet channel, and upper valve core is depressed by sliding sleeve, open inlet, and liquid enters valve pocket by the feed liquor window on the valve head, changes the valve pocket volume by adjusting piston, can realize changing the purpose of groundwater increment and accurate adjustment.

The utlity model has following advantage: the one, by piston energy precise adjustment valve pocket capacity, the adjustment capacity is big, and is widely applicable, and piston can be avoided piston to deviate from seal ring by reliably spacing.The 2nd, the circular conical surface of valve head bottom and valve interior wall constitute the streamline contour valve pocket, and liquid is difficult for producing turbulent flow, are difficult in the valve pocket being detained bubble, so further improved the perfusion precision.The 3rd, orientating device adopts vertical air flue and annular gas tank structure, and liquid outlet channel does not advance bottleneck, has avoided broken bottle to spill liquid.

Accompanying drawing is a longitudinal sectional view of the present utility model, and adopts semi-sictional view on orientating device, shows its integral structure.

Below in conjunction with drawings and Examples structure of the present utility model is further described.

In the embodiment that accompanying drawing provides, valve body of the present utility model (6) connects with the fluid reservoir bottom by bolt (29) and packing seal (14).Conduit (17) connects with the fluid reservoir bottom by nut (16) and seal ring (15).Valve body (6) upper end is equipped with valve head (12), valve head (12) top has pilot hole, the middle part has the feed liquor window, the bottom has the taper inlet, one side of valve body (6) has plunger shaft, piston (31) and seal ring (30) are housed in the plunger shaft, and there have boss to be used for to piston (31) to be spacing, plunger shaft is equipped with lid (32) outward.The taper inlet of the inwall of valve body (6) and valve head (12) constitutes the streamline contour valve pocket, the valve-closing spring (9) that bottom spool (8), upper valve core (10) and two ends head on bottom spool (8) and upper valve core (10) respectively is housed in valve pocket, bottom spool (8) is enclosed within the upper valve core (10), there is conical surface plush copper its lower end and is with down valve pad (7), upper valve core (10) is sleeved in the pilot hole of valve head (12) upper end, and the lower end also has conical surface plush copper and is with valve pad (11).The upper end of upper valve core (10) and bottom spool (8) is stretched in the fluid reservoir together.There is the sliding sleeve (28) that is sleeved on outside the bottom spool (8) upper valve core (10) upper end, there is nut (26), packing ring (25) and the tracheae (24) that is contained in bottom spool (8) upper end sliding sleeve (28) upper end, outside at tracheae (24), sliding sleeve (28) and upper valve core (10), with bellows (27) sealing of two ends chucking, valve body (6) lower end is the liquid outlet channel that has bell.Be set with orientating device (1) on the liquid outlet channel.Orientating device (1) has translot, and the downside of translot is equipped with steel ball (3) and holder ball pin (2).Orientating device (1) lower end has tapered guide surface, and has vertical air flue, annular gas tank and deflation hole.Guide pin bushing (18) and push rod (19) are housed in the conduit (17), bellows (20) with the two ends chucking between push rod (19) and the conduit (17) seals, upper shift fork (21) and packing ring (22), nut (23) are housed on the push rod (19), and another end yoke of upper shift fork (21) is in the annular groove of sliding sleeve (28).Screw (5) and lower shift fork (4) are equipped with in push rod (19) lower end.Another end yoke of lower shift fork (4) is in the translot of orientating device (1).Conduit (17) lower end is set with retracing spring (13)

Bottle rises during work, and it is up to promote orientating device (1), and promotes to move on the lower shift fork (4) by holder ball pin (2), steel ball (3), and lower shift fork (4) is upwards passed upper shift fork (21) and sliding sleeve (28) by screw (5), push rod (19) simultaneously.Under the effect of valve-closing spring (9), at first make on the upper valve core (10) and move, by the taper inlet sealing of last valve pad (11) with valve head (12), sliding sleeve (28) touching nut (26) is mentioned bottom spool (8) then, open the liquid outlet channel of valve body (6) lower end, liquid flows into bottle, and the gas in the bottle is discharged through vertical air flue, annular gas tank and the deflation hole of orientating device (1).Atmosphere enters in the valve pocket by the ventilation orifice on tracheae (24) and the bottom spool (8).Bottle descends, under retracing spring (13) effect, by lower shift fork (4), screw (5), push rod (19) upper shift fork (21) and sliding sleeve (28) are moved down, under the effect of valve-closing spring (9), bottom spool (8) descends, by the liquid outlet channel sealing of following valve pad (7) with valve body (6) lower end.Then, sliding sleeve (28) is touched upper valve core (13) and it is pressed down, open the taper inlet of valve head (12), the feed liquor window of liquid on valve head (12) in the fluid reservoir flows in the valve pocket, gas in the valve pocket is then by ventilation orifice and tracheae (24) exhaust to atmosphere in the middle part of the bottom spool (8), when the liquid in the valve pocket flooded the ventilation orifice at bottom spool (8) middle part, a small amount of gas passed the liquid exhaust to atmosphere in the fluid reservoir by the feed liquor window of valve head (12).Can change the valve pocket volume by adjusting piston (31), can adapt to the container of different capabilities, and reach the can of smart amount.

Claims (4)

1, a kind of liquid precise quantity perfusion valve, it is characterized in that comprising and be fixedly installed in the valve body (6) that its lower end, fluid reservoir bottom has liquid outlet channel, valve head (12) is installed on the valve body (6), being equipped with in the pilot hole of valve head (12) is nested together can slide up and down upper valve core (10) and bottom spool (8), upper valve core (10) lower end has conical surface plush copper, valve pad (11) is housed on the conical surface plush copper, be used to seal the inlet of valve head (12), also there is the conical surface plush copper bottom spool (8) lower end, and be with down valve pad (7), the liquid outlet channel that is used for the closed valve lower end, on, the valve-closing spring (9) that is sleeved on the bottom spool (8) is arranged between two conical surface plush coppers of bottom spool, there is its outside that is sleeved on the bottom spool (8) to have the sliding sleeve (28) of annular groove in the top of upper valve core (13), there is nut (26) and the tracheae (24) that is contained in bottom spool (8) upper end sliding sleeve (28) top, the ventilation orifice at bottom spool middle part communicates with atmosphere by this tracheae (24), upper valve core (10), bellows (27) by the end chucking between tracheae (24) and sliding sleeve (28) seals, also be installed with conduit (17) in the fluid reservoir bottom, the push rod (19) of slippage up and down is housed in the conduit (17), push rod (19) upper end is equipped with upper shift fork (21), the end fork of upper shift fork (21) is in the annular groove of sliding sleeve (28), bellows (20) by the two ends chucking between push rod (19) upper end and conduit (17) seals, lower shift fork (4) is equipped with in push rod (19) lower end, the orientating device (1) that has translot outside the liquid outlet channel of valve body (8) lower end outside being set with, the end fork of lower shift fork (4) is in the translot of orientating device (1).Conduit (17) bottom is set with retracing spring (13).

2, liquid precise quantity perfusion valve according to claim 1 is characterized in that valve head (12) upper end has pilot hole, and the middle part has the feed liquor window, and the bottom has the taper inlet, and the inwall of the taper inlet of valve head (12) and valve body (6) constitutes the streamline contour valve pocket.

3, liquid precise quantity perfusion valve according to claim 1, feature is all to have positive stop lug boss on plunger shaft and piston altogether.

4, liquid precise quantity perfusion valve according to claim 1, it is characterized in that orientating device has a tapered guide surface, have vertical air flue, annular gas tank and pore above tapered guide surface, liquid outlet channel do not advance bottleneck just liquid is injected bottle when orientating device is up when heading on flange on the valve body.