CN205802969U - A kind of filling valve - Google Patents

Abstract

The utility model discloses a kind of filling valve, its piston includes housing, base, connector, elastic support, the position of sealing function is provided when housing is semi-enclosed integrative-structure, its opening is arranged far from needing fill operation, away from providing the position of guide functions when needing washing and cleaning operation, therefore unique gap of generation does not affect fill operation, does not affect washing and cleaning operation after housing is combined formation integrative-structure with base；Surface of shell is continuous print, seamless structure.So, filling valve is by being the surface texture of integral type by plunger designs, and unique for piston face connecting portion is disposed away from the position of fill job area, thus ensures that piston face is positioned at, with continuous print, seamless feature, the region that material flows through.The clean surface degree of piston can meet the requirement of sterile filling, and the use field of piston is expanded, and thoroughly avoiding piston face gap affects the use of filling valve.

Description

A kind of filling valve

Technical field

This utility model relates to a kind of filling valve.

Background technology

In piston-type measurement filling valve field, filling valve includes valve body and is positioned at the rotary valve of valve inner, piston.Example The Chinese patent of Publication No. CN101767760A as disclosed in 7 days July in 2010, discloses a kind of food filling charging and goes out The switching valve of material, piston linear reciprocating motion the rotation process with spool in valve, it is achieved the conveying purpose of material.Such as figure Shown in 1, in prior art, piston-type measurement filling valve use piston be all separating component assembling structure, including upper cover 24, First sealing ring 25, bracer the 26, second sealing ring 27, bottom 28, upper cover 24 is provided with discoid position and protrudes at disk The connecting portion at shape position, bottom 28 is fixedly mounted at the connecting portion of upper cover 24, the first sealing ring 25, bracer 26, the Two sealing rings 27 are sandwiched between which.The piston structure ultimately formed obtain two sealing ring positions for valve body The position being tightly connected, the reason that must form gap after being connected by sealing ring both sides is affected, at this sealing portion faces Arrange at least four annulus, road, and when position, gap relates to the i.e. fill of fill job area, material flows through gap Place.So many gap seriously constrains the range of this piston-type measurement filling valve, especially for sanitary cleaning journey Spending higher sterile filling field, gap certainly will produce health concerns, even if distinct issues are to take cleaning measure the most Eliminate health concerns, still can there is the many drawbacks cleaning inconvenience.

Utility model content

The technical problems to be solved in the utility model is that the gap of the piston face how eliminating filling valve is to fill operations Impact, thus provide that a kind of to have piston at fill job area be surface continuous print, seamless filling valve.

For solving above-mentioned technical problem, this utility model adopts the following technical scheme that this filling valve is provided with valve body and piston, Described piston is movably arranged in valve body, and described piston includes that housing, base, connector, elastic support, described housing are one Body formula structure, described housing are provided with main body section and elastic position, and described main body section includes water conservancy diversion position and force part, institute State water conservancy diversion position be flat structure, described force part in tubular construction, the outside at described water conservancy diversion position be provided with guide face I, The centre position of inner side is connected with one end of force part, and described housing is T-shaped at the cross section of main body section, described connector Being provided with flange for bolt, connector, described connector Guan County is contained on force part, in the centrage of described connector and housing Heart line overlaps, and in tubular construction, described elastic position is distributed in edge and and the force part at water conservancy diversion position at described elastic position Being positioned at the inner side at water conservancy diversion position together, the outer surface at described elastic position links up with guide face I, and described elastic position includes sealing Position, moulding position, the side at described sealing position is connected with water conservancy diversion position, the opposite side at described sealing position and moulding position Connecting, described sealing position outer surface is provided with the projection around casing centerline distribution, described housing high spot external diameter Greatly, the inner surface at described moulding position is provided with confined planes, described sealing position, moulding position, water conservancy diversion position and force part it Between formed for accommodating the chamber of elastic support, described confined planes is towards chamber, and the cross section of described chamber is trapezoidal, described Chamber is provided with an opening, and described opening is towards the region between moulding position and force part, and described confined planes is to forced section Position surface distance opening towards on gradually decrease, described elastic support cross section is the most trapezoidal, described resilient support Body is placed in chamber with compressive state, and described elastic support is all connected with sealing position, water conservancy diversion position, force part and makes close Envelope position, water conservancy diversion position, force part are all extruded by from elastic support, are provided with through hole in the middle of described base, described Base is fixedly connected in moulding position, and described base is tightly connected with moulding position, and described flange prolongs at the centrage of piston Stretching on direction between force part and base, one end of described connector is positioned at the side of base, the described end through through hole Seat, elastic support, be provided with between moulding position and force part accommodate elastic support deformation position cavity.

In this technical scheme, housing is that semi-enclosed integrative-structure, its opening are arranged far from needing fill to make The position of sealing function is provided during industry, away from providing the position of guide functions when needing washing and cleaning operation, therefore tie with base at housing Close the unique connecting portion produced after forming integrative-structure not affect fill operation, do not affect washing and cleaning operation；Surface of shell is Continuous print, seamless structure.So, it is (non-that this utility model uses integral housing and connecting portion to migrate to reasonable position Working region) technical scheme, completely eliminate in prior art because gap is present in the health that fill job area causes Hidden danger and the problem cleaning inconvenience.

Piston is tightly connected relation with the foundation of other parts, is dependent on the surface of other parts of piston press, and then shape Becoming close annexation, this annexation refers to set up interference fit between piston and other parts, thus produces the company of sealing The effect connect.The sealing position of housing is piston and other parts form the sole site of the relation that is tightly connected, close in order to be able to allow Envelope position is the tightst with other component contact, first seals position and is designed to the position that whole piston wall thickness is the thinnest, makes close Envelope position obtains elastic deformation ability；Second, elastic support is arranged in housing, and after installation, elastic support is in contraction-like State is also in the trend of expansion and continual crush seal position outwards deforms.Finally, seal member protrudes laterally, its Projection is tightly pressed against the valve interior surface on the surface of other parts, such as filling valve.

The effect of elastic support is to maintain the deformation tendency sealing position, and (this external force is mainly with undertaking External Force Acting The counteracting force of other component feedback).Elastic support is not positioned at enclosure interior with natural expansion mode in an initial condition, And be affected by from seal position, water conservancy diversion position, the package action of force part and in the state being extruded, it and sealing Position, water conservancy diversion position, force part compact siro spinning technology；It is to accommodate elastic support also for accommodating the effect of the chamber of elastic support And making elastic support deform, it is ensured that elastic support can promote sealing position to deform laterally and protrude.

Control elastic support deformation tendency it is crucial that the shape of chamber, confined planes in the technical scheme of the application Effect is not only that the position guaranteeing elastic support is restricted, it is often more important that controls elastic support and has all the time to close The trend that envelope position is stretched, reaches to promote sealing the purpose that position deforms laterally.

When using this piston, interference fit state forces sealing position to be shunk inside, so, seals and promotes inside position Elastic support so that resilient support body deformability, after resilient support body deformability, part is to base, elastic support, moulding Cavity between position and force part migrates.Cavity is most important during piston applications, and it serves direct buffering elastic Property supporter the effect of deflection, to producing interference fit, there is pivotal role.

The perfect condition of reciprocating motion of the pistons is to maintain fixed pose, and the centerline parallel of piston is in the motion side of piston To, it should avoid the centerline dip situation in the direction of motion of piston, but this situation can be by many in implementation process Reason and cause, such as install not in place, manufacturing deficiency, parts are impaired, manipulating object is unstable etc..Once occur that piston inclines Oblique situation, housing has, except protruding other position (especially end), the situation that the surface with other parts contacts, Therefore the frictional force that piston movement is subject to increase.But, now the projection on housing remains to the surface with other parts and sets up close Envelope connects, say, that seal position still in effective duty.In order to eliminate the impact of frictional force, moulding in the application The external diameter of the main part at position has all been configured to the structure less than the external diameter sealing position, so at the elastic position of housing Place defines step structure, and when tilting of the piston, piston away from the surface of other parts, thus can be avoided in the end of housing Can be by extra frictional force.

Moulding position is the position that housing is connected with base.Interference fit can be passed through between base and moulding position Fix connection, can also connect by binding agent is fixing.Which kind of connected mode all pliabilities for moulding position have Particular requirement, and pliability depends on the wall thickness degree at moulding position, wall thickness value is the biggest, pliability is the poorest, and wall thickness value is the least, soft Toughness is the best.For making moulding position reach rational pliability, the wall thickness at described moulding position is designed to more than sealing position At the wall thickness of high spot, but still need to the external diameter the keeping sealing position external diameter more than moulding position.

Seal position between moulding position and water conservancy diversion position, seal side, position be connected as a single entity with water conservancy diversion position, close Envelope position opposite side is connected as a single entity with moulding position.The pliability that sealing position shows will be more than the pliability at moulding position Pliable and tough, seal position more elastic than moulding position.Elastic support is pushed in the case of sealing position and is easily made sealing position Bend laterally, housing shows as rise at sealing position outward bulge.Therefore, the deformation behaviour sealing position is to ensure that this work The key factor of the relation that is tightly connected that plug can be set up with other parts.Seal and obtain maximum displacement by deformation on position Position should seal position centre position, by projection be arranged at seal position zone line, it is possible to make projection and its Its parts sets up the most close annexation.The most important thing is, back piston is so set and obtains compensation function at high spot, Because bigger displacement ensure that the protruding deformation outward extending response mechanism of acquisition that can pass through under state of wear, thus Compensation can be obtained by self-deformation in the case of projection is worn and torn.

Base is disc-shaped structure, and it is only fixed in its side and moulding position and is connected, by setting inside moulding position Put the stopper slot of annular, and stopper slot width is equal to the thickness at the edge of base；When the edge of base is embedded in stopper slot, The side of base directly contacts with housing and is limited by housing, and the surface of base opposite side is just coherent with the surface of housing and shape Integral.The design of stopper slot can be effectively improved efficiency and the installation accuracy of mounting seat.

In order to improve the contiguity of base and housing, the centre of described base is provided with groove, and described groove is with logical Hole connects, and described force part is embedded in groove.Force part is embedded in groove, and force part and base are set up closely Annexation；Make to be connected between housing with base more firm.The design of flange can increase equally connector and force part with And the contiguity between base.

As of the present utility model preferably, described guide face I is in the shape being made up of side and the upper bottom surface of round platform.Water conservancy diversion The structure in face I beneficially liquid leaves piston to casing peripheral flowing under gravity, it is ensured that guide face I will not heap hydrops Body, it is simple to thoroughly cleaning piston.

Same for thorough cleaning piston, described base is provided with guide face II, the described guide face II side in round platform Shape, the outer surface at described moulding position and guide face II links up.

In order to avoid producing the potential situation in gap, make no matter whole piston face is in fill job area or remote All it is rendered as continuous, seamless feature from fill job area, between edge and the moulding position of described base, passes through binding agent Fixing connection, the outer surface at described moulding position links up with the outer surface of base.This binding agent can be filled up completely with housing with In small gaps between base, obtain at position, binding agent place by the way of removing and overflowing at the binding agent of surface of shell The surface that can link up with the outer surface of the outside at moulding position, base.The whole surface of piston presents continuous, seamless spy Levy, completely eliminate the impact in gap.

This utility model uses technique scheme: filling valve by being the surface texture of integral type by plunger designs, and Unique for piston face connecting portion is disposed away from the position of fill job area, thus ensure piston face with continuous print, Seamless feature is positioned at the region that material flows through.The clean surface degree of piston can meet the requirement of sterile filling, piston Use field is expanded, and thoroughly avoiding piston face gap affects the use of filling valve.

Accompanying drawing explanation

The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.

Fig. 1 is the structural representation of prior art filling valve；

Fig. 2 is use schematic diagram of the present utility model；

Fig. 3 is piston structure schematic diagram of the present utility model；

Fig. 4 is the structural representation of the housing of piston of the present utility model；

Fig. 5 is the structural representation of the main body section of the housing of piston of the present utility model；

Fig. 6 is the structural representation at the elastic position of the housing of piston of the present utility model；

Fig. 7 is the structural representation sealing position at the elastic position of the housing of piston of the present utility model；

Fig. 8 is the structural representation at the moulding position at the elastic position of the housing of piston of the present utility model；

Fig. 9 is the structural representation of the connector of piston of the present utility model；

Figure 10 is the structural representation of the base of piston of the present utility model.

Detailed description of the invention

As Fig. 2 is to shown in 10, and filling valve is provided with valve body 1 and piston 2, valve body 1 inner hollow is for accommodating piston 2 and thing Material.Piston 2 is movably arranged in valve body 1, and is tightly connected relation with valve body 1 formation.As it is shown on figure 3, this piston includes shell Body 3, base 4, connector 5, elastic support 6.Housing 3 and base 4 be food grade plastic, connector 5 be metal parts, elasticity Supporter 6 is for having resilient rubber components.Base 4 and elastic support 6 are all arranged in housing 3, whole piston 2 Outer surface is made up of the outer surface of housing 3 and a side of base 4；Although connector 5 is also mounted in housing 3, but its There is one end to protrude in the side of base 4, i.e. protrude from the outer surface of housing 3.

As shown in Figure 3,4, housing 3 is integral type structure, and it has main body section 7 and elastic position 8, and main body section 7 is again Including water conservancy diversion position 9 and force part 10, elastic position 8 includes again sealing position 11 and moulding position 12.

As it is shown in figure 5, the cross section of the main body section 7 of housing 3 is T-shaped structure, water conservancy diversion position 9 in flat structure, stress Position 10 is in tubular construction.Water conservancy diversion position 9 is in truncated conical shape, and the surface at water conservancy diversion position 9 is in by the side of round platform and upper bottom surface group The shape become and guide face I 13 that this surface is water conservancy diversion position 9, guide face I 13 belongs to the outer surface of housing 3；Force part 10 Being positioned at inside water conservancy diversion position 9 and in the centre position at water conservancy diversion position 9, one end of force part 10 is connected with water conservancy diversion position 9, overall On see, both belong to two parts of integrative-structure.The centrage of force part 10 overlaps with the centrage at water conservancy diversion position 9, and The centrage of both all centrages with piston 2 overlap.

As shown in Fig. 3,5,9, connector 5 is fixing with force part 10 to be connected, and the surface of connector 5 is provided with external screw thread, even The external screw thread of fitting 5 one end engages with the female thread of force part 10, makes connector 5 fix with force part 10 and is connected；Even The middle part of fitting 5 is provided with flange 14, and the external diameter of flange 14 is identical with the external diameter of force part 10, and flange 14 is close to stress This end that the end at position 10 is not connected with water conservancy diversion position 9.Flange 14 is in body and the force part 10 relying on connector 5 Closely annexation achieves the close-connected purpose with the end of force part 10, therefore connector 5 on the whole with housing 3 Define annexation closely.Connector 5 other end also is provided with external screw thread.

As shown in Fig. 3,4,6, elastic position 8 is distributed in the edge at water conservancy diversion position 9, the outer surface at elastic position 8 and water conservancy diversion Face I 13 links up, and elastic position 8 is all located at the same side at water conservancy diversion position 9 together with force part 10, on the whole, Elastic position 8 and force part 10 are all located at the inner side at water conservancy diversion position 9.

Sealing position 11, the moulding position 12 at elastic position 8 is all the tubular structure that wall thickness is relatively thin.Seal position 11 to be provided with The position of wall thickness minimum and the position of largest outside diameter.It is provided with around housing 3 centrage i.e. as it is shown in fig. 7, seal position 11 The projection 15 of the centrage distribution of force part 10, on the bearing of trend of piston 2 centrage, protruding 15 are distributed in sealing position The zone line of 11, this make seal position 11 cross section be convex, seal position 11 except projection 15 in addition to position be wall The thinnest thick position, and the external diameter one-tenth of protruding 15 is that whole piston 2 is maximum.Seal the side at position 11 directly and water conservancy diversion position 9 Connecting, the opposite side sealing position 11 is connected with moulding position 12.Such as Fig. 6, shown in 8, moulding position 12 with seal position 11 Connect this side be provided with progressive structure, its external diameter and internal diameter on the bearing of trend along piston 2 centrage all in gradually becoming The state changed.Moulding position 12 is being less than or equal to the external diameter at elastic position 8 with the external diameter sealing this side that position 11 is connected, and moulds Shape position 12 exists in the distance with the inner surface i.e. inner surface sealing this side that position 11 is connected to the surface of force part 10 In the state gradually changed on the bearing of trend of piston 2 centrage, this inner surface is the confined planes 16 at moulding position 12.Mould The external diameter of the main body at shape position 12 is less than the external diameter at sealing position 11, and the wall thickness at moulding position 12 is more than sealing position 11 in projection Wall thickness at 15.The inner side at moulding position 12 is provided with the stopper slot 17 of annular, and moulding position 12 is in stopper slot 17 position Cross-sectional profiles is L-shaped.

As shown in Fig. 3,4,8, sealing position 11, moulding position 12, water conservancy diversion position 9, force part 10 together form chamber Room 18, the cross section of this chamber 18 is trapezoidal, be used for accommodating elastic support 6.Elastic support 6 is circulus, and it is transversal Face is trapezoidal, the cross section of elastic support 6 is identical with the shape of cross section of chamber 18 and the cross section of elastic support 6 Area is more than the area of the cross section of chamber 18.Elastic support 6 can be limited by housing 3 and is in being arranged on chamber 18 Compressive state, the surface at elastic support 6 only crush seal position 11, the confined planes 16 at moulding position 12, force part 10 Surface, the surface at water conservancy diversion position 9, elastic support 6 is in extruding the sealing position 11 of housing 3, water conservancy diversion position 9 and be subject to all the time The state at power position 10.Owing to sealing position 11, there is pliable and tough elastically-deformable feature, therefore at the extruding work of elastic support 6 Arching upward with the lower direction to the centrage away from piston 2, the projection 15 sealing position 11 is placed in away from piston 2 centrage Position.

Chamber 18 is provided only with an opening so that chamber 18 is semi-enclosed structure.Opening is towards moulding position 12 and is subject to Region between power position 10 and opening towards parallel with the bearing of trend of the centrage of piston 2, confined planes 16 to forced section Position 10 surface distance opening towards on gradually decrease.The effect of confined planes 16 makes the chamber 18 width on opening direction Degree is gradually reduced, and limits the range of activity of elastic support 6.

Such as Fig. 3, shown in 10, base 4 is in the form of annular discs, and centre is provided with through hole 19 and groove 20, the centrage of through hole 19 and recessed The centrage of groove 20 overlaps, and groove 20 connects with through hole 19, and through hole 19, groove 20 make the cross section in the space in the middle of base 4 T-shaped, the diameter of groove 20 is identical with the external diameter of force part 10, and the thickness at the edge of base 4 is equal to the width of stopper slot 17. During installation, only smear binding agent in the side of base 4, then the edge of base 4 is embedded in stopper slot 17, make base 4 fix It is arranged on housing 3；One end of force part 10 is embedded in groove 20 so that flange 14 is in the centrage extension side of piston 2 Upwards between force part 10 and base 4；The other end of connector 5 passes through hole 19, thus connector 5 is provided with external screw thread One end protrude in the side of base 4.

After installation, the edge on a surface of base 4 is limited, at base 4, bullet by the stop at moulding position 12 Property supporter 6, yet forms both between moulding position 12 and force part 10 and accommodate elastic support 6 and deform the cavity 23 at position. Another surface of base 4 is positioned at the outside of housing 3 and a part for the outer surface as housing 3, and this outer surface is guide face II 21, guide face II 21 is the shape of the side of round platform, and the outer surface at moulding position 12 links up with guide face II 21；And base 4 Be plane in the centre on this surface, in use for set female connecting rod and dock.

Piston 2 is arranged in housing 3, the effect of protruding 15 elastically supported bodies 6 and tight contact between with housing 3, piston 2 Formed with housing 3 and be tightly connected.Elastic support 6 is squeezed and deforms, deformation make elastic support 6 have position to Migrate in cavity 23.Now, elastic support 6 is collected compression, therefore, promotes the exposure level between protruding 15 and housing 3 Closely.Due to, elastic support 6 is in compressive state, once seals the annexation at position 11 and changes, this A little situations including protruding 15 abrasions that change, just can continue to press on residue protruding 15 by elastic support 6 and tightly be squeezed in On housing 3, and continuously form the relation that is tightly connected closely.Most importantly the connecting portion on piston 2 surface is positioned at valve body 1 Being not involved in the region of fill operation, the connecting portion on piston 2 will not contacting material and only piston 2 continuous print, bright and clean table Face can contacting material.

Claims (9)

1. a filling valve, it is characterised in that: this filling valve is provided with valve body (1) and piston (2), and described piston (2) is movable to be installed In valve body (1), described piston (2) includes housing (3), base (4), connector (5), elastic support (6), described housing (3) being that integral type structure, described housing (3) are provided with main body section (7) and elastic position (8), described main body section (7) includes leading Stream position (9) and force part (10), described water conservancy diversion position (9) in flat structure, described force part (10) tie in a tubular form Structure, the outside of described water conservancy diversion position (9) is provided with guide face I (13), the centre position of inner side connects with one end of force part (10) Connecing, described housing (3) is T-shaped at the cross section of main body section (7), and described connector (5) is that bolt, connector (5) are provided with convex Edge (14), described connector (5) Guan County is contained on force part (10), the centrage of described connector (5) and housing (3) center Line overlaps, described elastic position (8) in tubular construction, described elastic position (8) be distributed in water conservancy diversion position (9) edge and be subject to Power position (10) is positioned at the inner side of water conservancy diversion position (9) together, and the outer surface of described elastic position (8) links up with guide face I (13), Described elastic position (8) includes sealing position (11), moulding position (12), the side of described sealing position (11) and water conservancy diversion position (9) connect, the opposite side at described sealing position (11) is connected with moulding position (12), and described sealing position (11) outer surface is provided with Around the projection (15) of housing (3) centrage distribution, described housing (3) is in the largest outside diameter at protruding (15) place, described moulding portion The inner surface of position (12) is provided with confined planes (16), described sealing position (11), moulding position (12), water conservancy diversion position (9) and stress Being formed between position (10) and be used for accommodating the chamber (18) of elastic support (6), described confined planes (16) is towards chamber (18), institute The cross section stating chamber (18) is trapezoidal, and described chamber (18) is provided with an opening, described opening towards moulding position (12) and Region between force part (10), described confined planes (16) to force part (10) surface distance opening towards on by The fewest, described elastic support (6) cross section is the most trapezoidal, and described elastic support (6) is placed in chamber with compressive state (18), in, described elastic support (6) is all connected with sealing position (11), water conservancy diversion position (9), force part (10) and makes sealing Position (11), water conservancy diversion position (9), force part (10) are all subject to the extruding from elastic support (6), in described base (4) Between be provided with through hole (19), in described base (4) is fixedly connected on moulding position (12), described base (4) and moulding position (12) Be tightly connected, described flange (14) be positioned on the centrage bearing of trend of piston (2) force part (10) and base (4) it Between, one end of described connector (5) is positioned at the side of base (4), described base (4), elastic support through through hole (19) (6) cavity (23) at receiving elastic support (6) deformation position, it is provided with between moulding position (12) and force part (10).

Filling valve the most according to claim 1, it is characterised in that: described moulding position (12) is provided with external diameter less than sealing The position of the external diameter of position (11).

Filling valve the most according to claim 2, it is characterised in that: the wall thickness of described moulding position (12) is more than sealing position (11) at the wall thickness at protruding (15) place.

Filling valve the most according to claim 1, it is characterised in that: described projection (15) is positioned at the mesozone sealing position (11) Territory.

Filling valve the most according to claim 1, it is characterised in that: described moulding position (12) inner side is provided with the stopper slot of annular (17), described stopper slot (17) width is equal to the thickness at the edge of base (4), and the edge of described base (4) is embedded in stopper slot (17) in.

6. according to filling valve described in claim 1 or 5, it is characterised in that: the centre of described base (4) is provided with groove (20), institute Stating groove (20) to connect with through hole (19), described force part (10) are embedded in groove (20).

Filling valve the most according to claim 1, it is characterised in that: described guide face I (13) is in by the side of round platform and the upper end The shape of face composition.

Filling valve the most according to claim 1, it is characterised in that: described base (4) is provided with guide face II (21), described in lead The shape of the stream interface II (21) side in round platform.

Filling valve the most according to claim 1, it is characterised in that: between edge and moulding position (12) of described base (4) Connecting by binding agent is fixing, the outer surface of described moulding position (12) links up with the outer surface of base (4).