CN87210541U

CN87210541U - Cylinder valve type metering distributor for liquid state medium

Info

Publication number: CN87210541U
Application number: CN 87210541
Authority: CN
Inventors: 刘世光
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-09-11
Filing date: 1987-09-11
Publication date: 1988-07-27

Abstract

The utility model discloses a cylinder valve type metering separate loading machine for liquid state medium, which is suitable for the precise separate loading of fluid medium. The machine of the utility model is characterized in that a cylinder valve type master cylinder and a stepless limiting system are designed; the cylinder valve type master cylinder comprises an outer sleeve, a cylinder main body, a piston, a Y-shaped sealing ring and an O-shaped sealing ring. The outer sleeve is equal to a valve body; the cylinder main body is equal to a valve core for the outer sleeve; the cylinder main body is equal to the cylinder body of a hydraulic cylinder for the piston, and thus the cylinder valve type master cylinder is a remodeled two-position three-way sliding valve. The separate loading precision of the machine of the utility model can reach (+/-) 0.5, and the utility model can be used for the precise separate loading of liquid cosmetic and the fluid medium such as the beverage, the sauce, etc.

Description

Cylinder valve type metering distributor for liquid state medium

The utility model belongs to the technological improvement of fluid medium racking machine.

Some fluid finished products, the half-blank of industries such as food, household chemicals, medicine, chemical industry belong to non-oily matter at present, have that viscosity is low, corrosive power is strong, characteristics such as health conditions requiring height in production and the packaging process, be equipped with the simplest machine installing, realizing the high-precision measuring packing of this class semifluid or fluid medium, is to fail a production key issue of fine solution for a long time.There are a lot of shortcomings in existing check valve or stop valve type fluid medium racking machine, and when not opening as change-over valve, pressure medium rises very highly in the cylinder, and pressure medium descended rapidly after valve was opened; By the pressure of medium itself, valve port has leakage to the change-over valve normal operation slightly fully, system media pressure out of reach certain numerical value, and change-over valve is not opened, and can cause racking machine malfunctioning; No matter be check valve or non-return valve, fluid medium has backflow in various degree during commutation, so the packing measuring accuracy is lower.

Task of the present utility model, provide a kind of packing precision height, no leak, commutation flexibly, reliable operation, the liquid medium metering and separate loading machine that can not be polluted by the liquid medium of packing.

Task of the present utility model is to realize by design-calculated cylinder valve formula master cylinder and the stepless system of limiting the quantity of, and cylinder valve formula master cylinder comprises overcoat 9, cylinder main body 4, cylinder cap 3, cylinder cap 17 and piston.Wherein overcoat 9 is equivalent to valve body, and cylinder main body 4 is equivalent to spool for overcoat 9, and piston is made of piston body 18 and piston rod 13, and piston body 18 is connected by connecting pin 11 with piston rod 13.Cylinder main body 4 is equivalent to the cylinder body of hydraulic actuating cylinder for piston.Therefore, master cylinder can be described as the two-bit triplet guiding valve of a remodeling.The commutation of cylinder main body 4, be to realize greater than the friction force that the clearance seal bearing fit between cylinder main body 4 and the overcoat 9 forms by being arranged on the friction force that y-shaped ring 10 on the piston body 18 and O-ring seals 12 and cylinder main body 4 interference fit form, the cylinder chamber 23 that liquid medium enters cylinder main body 4 is to finish by the interior negative pressure in cylinder chamber 23 and the deadweight of liquid medium.Therefore, the utility model commutation is flexible, and liquid medium does not have backflow and leakage phenomenon when 4 commutations of cylinder main body, and commutation can not reached ± 0.5 gram by liquid medium pressure variable effect, working stability, packing precision, and liquid medium can be not contaminated during packing.The stepless system of limiting the quantity of comprises handwheel 25, the lateral pin 26 of limiting the quantity of, limit the quantity of mechanism 27 and scale 28.This system can determine to enter liquid medium amount in the cylinder chamber 23 according to the packing needs.

Fig. 1 is the master cylinder of a kind of embodiment of the present utility model and the cutaway view of stepless loading cartridge, and wherein 1 is hopper, and 2 is feed pipe, 3 is cylinder cap, and 4 is the cylinder main body, and 5 is lining, 6 is jam nut, and 7 for dividing packaging container, and 8 is discharge nozzle, 9 is overcoat, and 10 is y-shaped ring, and 11 is connecting pin, 12 is O-ring seals, and 13 is piston rod, and 14 is locating dowel pin, 15 is frame, and 16 is copper sheathing, and 17 is cylinder cap, 18 is piston body, and 19 is discharging opening, and 20 is transverse passageway, 21 are perpendicular passage, and 22 is inlet point, and 23 is the cylinder chamber, 24 is spacing keyway, and 25 is handwheel, and 26 are the lateral pin of limiting the quantity of, 27 measuring mechanisms that exceed, 28 is scale.

Fig. 2 is the master cylinder cutaway view of another kind of embodiment of the present utility model, wherein 29 is nylon keystone ring seal ring, 30 are the perpendicular pin of power transmission, and 31 is jam nut, and 32 is the open annular pad, 33 are the perpendicular key seat of power transmission, 34 is packing seal, and 35 is the y-shaped ring governing screw, and 36 is lock screw, 37 are y-shaped ring adjusting power transmission pin, and 38 are the power transmission keystone ring.

Now the utility model is described in further detail in conjunction with Fig. 1, Fig. 2.Cylinder valve formula liquid medium metering and separate loading machine shown in Figure 1 is particularly suitable for the quantitative packing of semifluid and lotion medium, and this machine cylinder cap 3 is fixed on the upper end of overcoat 9 with jam nut 6.Overcoat 9 is provided with inlet point 22 and discharging opening 19.Inlet point 22 communicates with hopper 1 by feed pipe 2, and discharging opening 19 communicates with dividing packaging container 7 by discharge nozzle 8.On the upper inside wall of overcoat 9, be lined with lining 5, between lining 5 and the cylinder main body 4 with the clearance seal bearing fit.On cylinder main body 4, have transverse passageway 20 and perpendicular passage 21.Erect passage 21 perpendicular to transverse passageway 20, and transverse passageway 20 is communicated with the cylinder chamber 23 of cylinder main body 4.Be provided with spacing keyway 24 in cylinder main body 4 bottoms, the height of spacing keyway 24 is cylinder main body 4 reciprocating ranges.For good seal with make piston body 18 and cylinder main body 4 interference fit, piston body 18 is provided with y-shaped ring 10 and O-ring seals 12.

Cylinder cap 17 is fixed on overcoat 9 lower ends with screw thread, between cylinder cap 17 and piston rod 13 copper sheathing 16 is set, piston rod 13 and copper sheathing 16 running-fits.Whole cylinder valve formula master cylinder is arranged on the frame 15.

The lateral pin 26 of limiting the quantity of of mechanism of limiting the quantity of is fixed on the piston rod 13, before the packing liquid medium, can the pointer of the mechanism 27 that limits the quantity of be referred on the predetermined gram number of scale 28 according to packing needs rotation hand wheel 25.Like this, the position that piston rod 13 moves down just by being fixed on the lateral pin 26 of limiting the quantity of on the piston rod 13, is limited by loading cartridge 27, thereby has determined the quantity of liquid medium in the suction cylinder chamber 23.

Drive system of the present utility model can adopt known manually foot-operated, also can adopt known electrodynamic type system.

When packing, when cylinder main body 4, when piston body 18 is in pole location, (being position shown in Figure 1), horizontal logical 20 communicate with discharging opening 19, at this moment are the states of finishing packing.When piston rod 13 is driven when moving down, because piston body 18 have certain friction force, so cylinder main body 4 moves down with piston body 18 by y-shaped ring 10 and O-ring seals 12 and cylinder main body 4 interference fit.When the locating dowel pin 14 on the overcoat 9 that the upper end of spacing keyway 25 is set up blocked, cylinder main body 4 stopped to move down, and at this moment cylinder main body 4 is in pole location down, and this moment, the left end of transverse passageway 20 was sealed by the inwall of cylinder main body 4, and right-hand member then communicates with inlet point 22.When piston body 18 continued to move down under external force drives, cylinder chamber 24 effective volumes increased, and liquid medium enters in the cylinder chamber 23 through feed pipe 2, inlet point 22, transverse passageway 20 and perpendicular passage 21 from hopper 1.It is to finish by the negative pressure in the cylinder chamber and the deadweight of liquid medium that liquid medium enters cylinder chamber 23.Enter what of liquid mediums in the cylinder chamber 23, move down distance by piston rod 13 and decide, and piston rod 13 moves down the size of distance, is fixed by stepless loading cartridge 27.Before packing, at first rotation hand wheel 25, the pointer of the mechanism 27 that limits the quantity of is referred on the predetermined packing gram degree of scale 28, at this moment the limit the quantity of position of the cross bar of limiting the quantity of of mechanism 27 has been determined, therefore the range of piston rod 13 also has been determined, and piston rod 13 drives piston body 18 and moves down under external force, the lateral pin 26 of limiting the quantity of on being fixed on piston rod 13 is run into limiting the quantity of during cross bar of the mechanism 27 that limits the quantity of, and piston rod 13 is forced to stop to move downward.When piston rod 13 under external force drives during upward movement, because piston body 18 is interference fit by y-shaped ring disposed thereon 10 and O-ring seals 12 with cylinder main body 4, therefore cylinder main body 4 moves up with piston body 18 by the friction force that forms with piston body 18 interference fit, and the two ends, the left and right sides of transverse passageway 20 are all sealed by the inwall of cylinder main body 4.When cylinder main body 4 upper ends contact with cylinder cap 3, cylinder main body 4 stops upward movement, the left end of the transverse passageway 20 of cylinder main body 4 communicates with discharging opening 19 at this moment, but piston can continue upward movement, relative motion takes place with lining 5 in piston body 18, liquid medium in cylinder chamber 23 volume-diminished, cylinder chamber 23 is through perpendicular passage 21, transverse passageway 20, discharging opening 19, discharge nozzle 8, be extruded in minute packaging container 7.Reciprocating action makes the quantitative packing that can realize liquid medium like this.

The reversing principle of this cylinder valve formula liquid medium metering and separate loading machine is: the y-shaped ring 10 of piston body 18 and O-ring seals 12 are far longer than cylinder main body 4 with the friction force that cylinder main body 4 interference fit form and cooperate the friction force that forms with the clearance seal of lining 5.So during piston reciprocates, can drive cylinder main body 4 and do the commutation motion, thereby guarantee the racking machine normal operation, and liquid medium no leak.

Cylinder valve formula liquid medium metering and separate loading machine shown in Figure 2, seal clearance between cylinder main body 4 and the overcoat 9 can be controlled in 20 microns, therefore not only be suitable for the quantitative packing of semifluid and lotion medium, and be suitable for the packing fluid medium, as shampoo, soy sauce, beverage etc.

Seal clearance between cylinder main body 4 and the overcoat 9 being controlled in 20 microns, guaranteeing the good seal and the technical guarantee flexibly that commutates, is that cylinder main body keystone ring seal ring compensating device is set on cylinder main body 4; The y-shaped ring compensating device is set on piston body 18.

Cylinder main body keystone ring seal ring compensating device, by power transmission keystone ring 38, nylon keystone ring seal ring 29, the perpendicular pin 30 of power transmission, jam nut 31, the perpendicular key seat 33 of power transmission constitutes.Compensation process is as follows, when find that keystone ring sealed nylon circle 29 causes because of wearing and tearing and overcoat between gap increase when influencing clearance seal, but backspin is arranged on the jam nut 31 on the cylinder main body, by the perpendicular pin 30 of power transmission, power transmission keystone ring 38 is moved down, because the wedge surface mating reaction between power transmission keystone ring and the nylon keystone ring, make nylon keystone ring seal ring 29 cross travels, thereby keystone ring sealed nylon loop diameter increases, thereby the gap between keystone ring sealed nylon circle 29 and the overcoat is dwindled, guaranteed good clearance seal.

Y-shaped ring compensating device on the piston body 18 is set, by packing seal 34, y-shaped ring governing screw 35, lock screw 36, y-shaped ring regulate power transmission pin 37 and open annular pad 32 is formed.When making the y-shaped ring diameter, needs increase, make it to seal better and when increasing friction force between piston body 18 and the cylinder main body 4, can unclamp lock screw 36 earlier, regulate y-shaped ring governing screw 35 then, make its inclined-plane force y-shaped ring to regulate power transmission pin 37 outside side travels, make open annular pad 32 enlarged-diameter, thereby also force y-shaped ring 10 enlarged diameter.Like this, not only improved sealing property, and increased the friction force between piston body 18 and the cylinder main body 4, the commutation action of cylinder main body 4 is reliably guaranteed.The effect of packing seal 34 is set, and is to make fluid medium can not enter gap between governing screw 35 and the piston body 18, guarantees that micro-adjusting mechanism is not corroded.Liquid medium metering and separate loading machine embodiment shown in Figure 2, higher than liquid medium metering and separate loading machine embodiment packing precision shown in Figure 1, it is also more reliable to work, and adjusts more conveniently, but structure is complicated.The drive system of embodiment illustrated in figures 1 and 2 is prior art, therefore omits.

Claims

1, cylinder valve formula liquid medium metering and separate loading machine, comprise hopper 1, feed pipe 2, discharge nozzle 8, divide packaging container 7, frame 15, cylinder valve formula master cylinder, stepless system and the drive system of limiting the quantity of, it is characterized in that said cylinder valve formula master cylinder is by overcoat 9, cylinder main body 4, cylinder cap 3, cylinder cap 17, y-shaped ring 10, O-ring seals 12, piston body 18, piston rod 13 constitutes, loam cake 3 is fixed on the upper end of overcoat 9 with jam nut 6, overcoat 9 is provided with inlet point 22 and discharging opening 19, inlet point 22 communicates with hopper 1 by feed pipe 2, and discharging opening 19 communicates with dividing packaging container 7 by discharge nozzle 8; Cylinder main body 4 is arranged in the overcoat 9, with the clearance seal bearing fit, is provided with locating dowel pin 14 in overcoat 9 bottoms between overcoat 9 and the cylinder main body 4; On cylinder main body 4, have transverse passageway 20 and perpendicular passage 21, perpendicular passage 21 perpendicular to transverse passageway 20, and transverse passageway 20 is communicated with the cylinder chamber 23 of cylinder main body 4, be provided with spacing keyway 24 in cylinder main body 4 bottoms, the height of spacing keyway 24 is cylinder main body 4 reciprocating ranges, when cylinder main body 4 is in pole location, transverse passageway 20 communicates with discharging opening 19, and when cylinder main body 4 was in pole location, transverse passageway 20 communicated with inlet point 22; Piston body 18 is provided with y-shaped ring 10 and O-ring seals 12, and piston body 18 is by y-shaped ring disposed thereon 10 and O-ring seals 12 and cylinder main body 4 interference fit, and piston body 18 is connected with piston rod 13 by connecting pin 11; Cylinder cap 17 is fixed on overcoat 9 lower ends with screw thread; The said stepless system that limits the quantity of is made of handwheel 25, the lateral pin 26 of limiting the quantity of, limit the quantity of mechanism 27 and scale 28, and the lateral pin 26 of limiting the quantity of is fixed on the piston rod 13.

2, according to the described racking machine of claim 1, it is characterized in that on the upper inside wall of overcoat 9, being lined with lining 5, between lining 5 and the cylinder main body 4 with the clearance seal bearing fit; Between cylinder cap 17 and piston rod 13, copper sheathing 16 is set, piston rod 13 and copper sheathing 16 running-fits.

3,, it is characterized in that on cylinder main body 4, being provided with the cylinder main body keystone ring seal ring compensating device that constitutes by power transmission keystone ring 38, nylon keystone ring seal ring 29, the perpendicular pin 30 of power transmission, jam nut 31, the perpendicular key seat 33 of power transmission according to the described racking machine of claim 1; The y-shaped ring compensating device that is made of packing seal 34, y-shaped ring governing screw 35, lock screw 36, y-shaped ring adjusting power transmission pin 37 and open annular pad 32 is being set on piston body 18.