CN205802970U - A kind of filling valve piston - Google Patents

Abstract

The utility model discloses a kind of filling valve piston, it 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, this utility model uses integral housing and link position i.e. gap to migrate to the technical scheme at reasonable position, completely eliminates in prior art because gap and is present in the health concerns that fill job area causes and the problem cleaning inconvenience.

Description

A kind of filling valve piston

Technical field

This utility model relates to a kind of filling valve piston.

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 the gap how the eliminating piston face impact on fill operations, by This provides a kind of can be surface continuous print, seamless filling valve piston at fill job area.

For solve above-mentioned technical problem, this utility model adopt the following technical scheme that this filling valve piston include housing, Base, connector, elastic support, described housing is that integral type structure, described housing are provided with main body section and elastic position, institute State main body section include water conservancy diversion position and force part, described water conservancy diversion position be flat structure, described force part in a tubular form Structure, the outside at described water conservancy diversion position is provided with guide face I, the centre position of inner side is connected with one end of force part, described shell Body is T-shaped at the cross section of main body section, and described connector is that tubular structure, connector are internally threaded, described connector Guan County is contained on force part, and the centrage of described connector overlaps with casing centerline, described elastic position in tubular construction, Described elastic position is distributed in the edge at water conservancy diversion position and is positioned at the inner side at water conservancy diversion position together with force part, described elastic The outer surface of position links up with guide face I, and described elastic position includes sealing position, moulding position, the side at described sealing position Be connected with water conservancy diversion position, the opposite side at described sealing position is connected with moulding position, described sealing position outer surface be provided with around The projection of casing centerline distribution, described housing is at the largest outside diameter of high spot, and described projection is positioned at sealing position and diversion division This side that position connects, the inner surface at described moulding position is provided with confined planes, described sealing position, moulding position, water conservancy diversion position and Forming the chamber for accommodating elastic support between force part, described confined planes is towards chamber, and described chamber is provided with one Opening, described opening towards the region between moulding position and force part, the surface of described confined planes to force part away from From opening towards on gradually decrease, described elastic support cross section is the most trapezoidal, and described elastic support is with compressive state Being placed in chamber, described elastic support is only connected with sealing position and makes sealing position be squeezed by from elastic support Pressure, is provided with through hole in the middle of described base, described base is fixedly connected in moulding position, and described base seals even with moulding position Connecing, described through hole connects with connector inner space and the centrage of through hole overlaps with the centrage of connector, described base, Elastic support, moulding position, be provided with between water conservancy diversion 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 package action and in the state being extruded, it with seal position compact siro spinning technology；For accommodating The effect of the chamber of elastic support is to accommodate elastic support and make elastic support deform, it is ensured that elastic support Sealing position can be promoted 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 Position, cavity between water conservancy diversion position and force part migrate.Cavity is most important during piston applications, and it serves directly Connect the effect of the deflection of snubber elastomeric supporter, to producing interference fit, there is pivotal role.

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, it makes protruding foundation with other parts connect the most closely Connect relation.The most important thing is, back piston is so set and obtains compensation function at high spot, because bigger displacement ensure that Protruding can passing through under state of wear deforms the outward extending response mechanism of acquisition, thus permissible in the case of projection is worn and torn Compensation is obtained by self-deformation.

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 at position has all been configured to the structure less than the external diameter sealing position, and so elastic position at housing defines rank Ladder-shaper structure, when tilting of the piston, the end of housing away from the surface of other parts, thus can avoid piston can be subject to additionally Frictional force.

Moulding position is the position that housing is connected with base.The housing internal diameter at moulding position is slightly larger than the external diameter of base, Firmly being specified together by binding agent when both combine, base is only connected with housing at the moulding position of housing.Cause This, the pliability for moulding position has particular requirement, and pliability depends on the wall thickness degree at moulding position, and wall thickness value is more Greatly, pliability the poorest, wall thickness value is the least, pliability the best.For making moulding position reach rational pliability, described moulding position Wall thickness be designed to more than sealing position at the wall thickness of high spot, but the external diameter still needing to keep sealing position is more than moulding position External diameter.

Base is disc-shaped structure, and it is only fixed in its side and moulding position and is connected, by setting inside moulding position Putting the stopper slot of annular, the side of described base is stepped；The position maximum when the diameter at the edge of base is embedded in spacing In groove, base establishes the fixing relation being connected with housing by interference fit.The design of stopper slot can be effectively improved installation The efficiency of base and installation accuracy.

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.

In order to be able to increase the contiguity between connector and force part and base, one end of described connector is provided with Flange, described flange on the centrage bearing of trend of piston between force part and 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, described guide face II The shape of the side in round platform.

For controlling the deformation range of elastic support further, base is provided with the limit of elastic support position Position block, limited block is introduced into chamber, and it simply serves the effect further determining that chamber scope, and it is the foundation of chamber boundary One of.

It extend in the connector of piston except surface being set threaded connecting rod when piston uses, reach purpose is installed Outward, it is also possible to using entire body is all the bolt of screw thread, described bolt be flexibly connected through through hole and one end with connector, described The bolt other end is positioned at susceptor surface.So can also establish a connection with piston by setting female connecting rod, reach To installing purpose.

This utility model uses technique scheme: filling valve piston is provided with the surface texture of integral type, and by table The unique connecting portion in face is disposed away from the position of fill job area, thus ensures that piston face is with continuous print, seamless spy Levy and be positioned at the region that material flows through.The clean surface degree of piston can meet the requirement of sterile filling, the use field of piston Expanded.

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 piston；

Fig. 2 is the use schematic diagram of the first embodiment of this utility model；

Fig. 3 is the piston structure schematic diagram of the first embodiment of this utility model；

Fig. 4 is the structural representation of the housing of the piston of the first embodiment of this utility model；

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

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

Fig. 7 is the structural representation sealing position at the elastic position of the housing of the piston of the first embodiment of this utility model Figure；

Fig. 8 is the structural representation at the moulding position at the elastic position of the housing of the piston of the first embodiment of this utility model Figure；

Fig. 9 is the structural representation of the connector of the piston of the first embodiment of this utility model；

Figure 10 is the structural representation of the base of the piston of the first embodiment of this utility model；

Figure 11 is the use schematic diagram of this utility model the second embodiment.

Detailed description of the invention

If Fig. 2 is to shown in 10, the first embodiment of this utility model.

As in figure 2 it is shown, filling valve is provided with valve body 1 and piston 2, valve body 1 inner hollow is for accommodating piston 2 and 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 filling valve piston includes Housing 3, base 4, connector 5, elastic support 6.Housing 3 and base 4 be food grade plastic, connector 5 be metal parts, Elastic support 6 is for having resilient rubber components.Base 4, connector 5 and elastic support 6 are all arranged in housing 3, The outer surface of whole piston 2 is made up of the outer surface of housing 3 and the part surface of base 4.

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 fixedly mounted in force part 10, and the surface of connector 5 is provided with external screw thread, This external screw thread engages with the female thread of force part 10；Flange 14, the external diameter of flange 14 and stress it is provided with in one end of connector 5 The external diameter at position 10 is identical, and flange 14 is close to this end that the end of force part 10 is not connected with water conservancy diversion position 9.Flange 14 The end achieved with force part 10 in the close annexation of the body with force part 10 that rely on connector 5 closely connects The purpose connect, therefore connector 5 defines annexation closely with housing 3 on the whole.In connector 5 inside is additionally provided with Screw thread.It is screwed into that connector 5 is internal just can install this piston 2 by being provided with externally threaded connecting rod.

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 largest outside diameter.It is provided with around the housing 3 centrage i.e. centrage of force part 10 as it is shown in fig. 7, seal position 11 The projection 15 of distribution, protruding 15 are distributed at whole sealing position 11, and the external diameter of protruding 15 is the external diameter of whole piston 2 maximum, So protruding 15 are just directly connected with water conservancy diversion position 9, namely protruding be positioned at that sealing position 11 is connected with water conservancy diversion position 9 be somebody's turn to do Side.The side sealing position 11 is directly connected with water conservancy diversion position 9, and the opposite side sealing position 11 is connected with moulding position 12.As Fig. 6, shown in 8, moulding position 12 with seal this side that position 11 is connected and be provided with stepped construction, its external diameter ratio sealing position 11 external diameters at protruding 15 are much smaller, and this also makes protruding 15 architectural features more with substantially protrusion.Although moulding portion The external diameter of position 12 is less than the external diameter at elastic position 8, but the wall thickness at moulding position 12 is more than sealing position (11) at protruding 15 Wall thickness.Moulding position 12 is on the surface with the inner surface i.e. inner surface sealing this side that position 11 is connected to force part 10 Distance on the bearing of trend along piston 2 centrage in the state gradually changed, this inner surface is the limit at moulding position 12 Plane 16.The inner side at moulding position 12 is provided with the stopper slot 17 of annular, and moulding position 12 is transversal stopper slot 17 position Facial contour is C-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, this chamber 18 is used for accommodating elastic support 6.Elastic support 6 is circulus, trapezoidal, elastic of its cross section The area of the cross section of support body 6 is far smaller than the area of the cross section of chamber 18.Elastic support 6 can be subject in being arranged on chamber 18 Being in compressive state to the restriction of housing 3, the surface at elastic support 6 only crush seal position 11, elastic support 6 begins It is in the state sealing position 11 of extruding housing 3 eventually.Owing to sealing position 11 there is pliable and tough elastically-deformable feature, therefore Under the squeezing action of elastic support 6, arch upward in the direction to the centrage away from piston 2, and the projection 15 sealing position 11 is just set to In the position away from piston 2 centrage.

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.The side of base 3 is stepped, outside one end of base 3 Footpath is more than the external diameter of the other end.During installation, only smear binding agent in the side of base 4, then by embedding for this bigger for base 4 external diameter end Enter in stopper slot 17, make base 4 be fixedly mounted on housing 3；One end of force part 10 is embedded in groove 20 so that convex Edge 14 on the centrage bearing of trend of piston 2 between force part 10 and base 4；Through hole 19 is internal with connector 5 to be connected Logical, through hole 19, centrage all centrages with piston 2 of connector 5 overlap.Base 3 sets at the end face of bigger this end of external diameter Limited location block 29, limited block 29 is distributed around stopper slot 17, in the present embodiment the quantity only one of which of limited block 29.Certainly root According to actual condition need can also the quantity of adaptive increase limited block 29 distribution is set around stopper slot 17, the most spacing Block 29 quantity is three, four, thus obtains the embodiment of alternate manner.Limited block 29 is positioned at the opening part of chamber (18), limit Position block 29 is towards elastic support 6 position.

After installation, the edge of an end face of base 4 is limited, at base 4, bullet by the stop at moulding position 12 Property supporter 6, moulding position 12, yet forms both between water conservancy diversion position 9 and force part 10 receiving elastic support 6 deform position Cavity 23.Another end face of base 4 and its surface be positioned at the outside of housing 3 and one of the outer surface as housing 3 Part, another end face of this base 4 is guide face II 21, and guide face II 21 is the shape of the side of round platform；And base 4 is at this The centre on surface is plane, in use for be provided with externally threaded 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.

This utility model the second embodiment.

As shown in figure 11, this embodiment and the first embodiment difference are that this piston 2 also includes bolt 22.Bolt 22 two ends are designed with screw thread, and bolt 22 is through through hole 19 and one end is flexibly connected with connector 5, bolt 22 other end protrudes On base 4 surface.

Claims (9)

1. a filling valve piston, it is characterised in that: this filling valve piston includes housing (3), base (4), connector (5), elastic support (6), described housing (3) is that integral type structure, described housing (3) are provided with main body section (7) and elastic Position (8), described main body section (7) includes that water conservancy diversion position (9) and force part (10), described water conservancy diversion position (9) are tied in flat In tubular construction, the outside of described water conservancy diversion position (9) is provided with guide face I (13), the centre of inner side for structure, described force part (10) Position is connected with the one end of force part (10), and described housing (3) is T-shaped at the cross section of main body section (7), described connector (5) being that tubular structure, connector (5) are internally threaded, described connector (5) Guan County is contained on force part (10), described The centrage of connector (5) overlaps with housing (3) centrage, described elastic position (8) in tubular construction, described elastic position (8) it is distributed in the edge at water conservancy diversion position (9) and is positioned at the inner side of water conservancy diversion position (9) together with force part (10), described elasticity The outer surface at position (8) links up with guide face I (13), and described elastic position (8) includes sealing position (11), moulding position (12), the side of described sealing position (11) be connected with water conservancy diversion position (9), the opposite side at described sealing position (11) and moulding portion Position (12) connects, and described sealing position (11) outer surface is provided with the projection (15) around the distribution of housing (3) centrage, described housing (3) at the largest outside diameter at protruding (15) place, described projection is positioned at and seals this side that position (11) is connected with water conservancy diversion position (9), institute The inner surface stating moulding position (12) is provided with confined planes (16), described sealing position (11), moulding position (12), water conservancy diversion position (9) and being formed between force part (10) and be used for accommodating the chamber (18) of elastic support (6), described confined planes (16) is towards chamber Room (18), described chamber (18) is provided with an opening, and described opening is towards between moulding position (12) and force part (10) Region, the distance of described confined planes (16) to the surface of force part (10) opening towards on gradually decrease, described elasticity is propped up Support body (6) cross section is the most trapezoidal, and described elastic support (6) is placed in chamber (18) with compressive state, described resilient support Body (6) is only connected with sealing position (11) and makes sealing position (11) by the extruding from elastic support (6), described base (4) being provided with through hole (19) in the middle of, described base (4) is fixedly connected in moulding position (12), described base (4) and moulding position (12) being tightly connected, described through hole (19) connects with connector (5) inner space and the centrage of through hole (19) and connector (5) centrage overlaps, described base (4), elastic support (6), moulding position (12), water conservancy diversion position (9) and force part (10) cavity (23) accommodating elastic support (6) deformation position it is provided with between.

Filling valve piston the most according to claim 1, it is characterised in that: the upper external diameter of described moulding position (12) is less than Seal the external diameter at position (11).

Filling valve piston 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) is at the wall thickness at protruding (15) place.

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

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

Filling valve piston the most according to claim 1, it is characterised in that: one end of described connector (5) is provided with flange (14), described flange (14) is positioned between force part (10) and base (4) on the centrage bearing of trend of piston (2).

Filling valve piston the most according to claim 1, it is characterised in that: described guide face I (13) is in by the side of round platform With the shape of upper bottom surface composition, described base (4) is provided with guide face II (21), the described guide face II (21) side in round platform Shape.

Filling valve piston the most according to claim 1, it is characterised in that: it is provided with resilient support on described base (4) The limited block (29) of body (6) position.

Filling valve piston the most according to claim 1, it is characterised in that: this filling valve piston also includes bolt (22), Described bolt (22) is through through hole (19) and one end is flexibly connected with connector (5), described bolt (22) other end is positioned at the end Seat (4) surface.