CN205896219U - Filling valve - Google Patents

Abstract

The utility model discloses a filling valve, its piston include casing, base, connecting piece, the elastic support body, and the casing be that a semi -enclosed body structure, its opening position are provided and keep away from the position that provides sealed effect when needing the filling operation, keep away from the position that provides the water conservancy diversion effect when needs rinse the operation, and sole gap of event production behind a casing and base combination formation body structure does not influence the filling operation, does not influence the washing operation, housing face is continuous, seamless structure. So filling valve is through the surface texture with piston design formula as an organic whole to with piston surface sole connecting portion position in the position of keeping away from filling gathering range, thereby guarantee that piston surface is with continuous, seamless Q -character in the region that the material was flowed through. The surperficial clean degree of piston can satisfy the requirement of sterile filling, and the use field of piston obtains enlarging, has thoroughly avoided the use influence of piston surface gap to filling valve.

Description

A kind of filling valve

Technical field

This utility model is related to a kind of filling valve.

Background technology

In piston-type measurement filling valve field, include valve body in filling valve and be located 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, in valve, piston linear moves back and forth and the rotation process with valve element, realizes the conveying purpose of material.As figure Shown in 1, in prior art, piston-type measurement filling valve use piston be all separating component assembling structure, including on cover 24, First sealing ring 25, support block 26, the second sealing ring 27, bottom 28, upper lid 24 is provided with discoid position and protrudes in disk The connecting portion at shape position, bottom 28 is fixedly mounted at the connecting portion of lid 24, the first sealing ring 25, support block 26, the Two sealing rings 27 are sandwiched between which.The piston structure ultimately forming two sealing ring positions obtain for valve body The position being tightly connected, is affected by the reason must forming gap after the connection of sealing ring both sides, on this sealing position surface Arrange at least four road annulus, and it is that during fill, material flows through gap that gap position is related to fill job area Place.So many gap seriously constrains the range of this piston-type measurement filling valve, especially for sanitary cleaning journey Spend 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 many drawbacks of cleaning inconvenience.

Utility model content

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

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 housing, base, connector, elastic support, and described housing is 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 in flat structure, described force part in tubular construction, the outside at described water conservancy diversion position be provided with guide face, The centre position of inner side is connected with one end of force part, and described housing is t-shaped in the cross section of main body section, described connector It is internally threaded for tubular structure, connector, described connector Guan County is contained on force part, the centrage of described connector Overlap with casing centerline, described elasticity position in tubular construction, described elasticity site distribution water conservancy diversion position edge and with Force part is located at the inner side at water conservancy diversion position together, and the outer surface at described elasticity position is linked up with guide face, described elasticity position Including sealing position, moulding position, the side of described sealing position is connected with water conservancy diversion position, the opposite side of described sealing position with Moulding position connects, and described sealing position outer surface is provided with the projection around casing centerline distribution, and described housing is in high spot Largest outside diameter, this side that described projection is connected with water conservancy diversion position positioned at sealing position, the inner surface at described moulding position is provided with Confined planes, form the chamber for accommodating elastic support between described sealing position, moulding position, water conservancy diversion position and force part Room, towards chamber, described chamber is provided with an opening to described confined planes, and described opening is towards between moulding position and force part Region, the distance on the surface of described confined planes to force part opening towards on gradually decrease, described elastic support is horizontal Section is also trapezoidal, and described elastic support is placed within the chamber with compressive state, and described elastic support is only with sealing position even Connect and make sealing position by being extruded from elastic support, in the middle of described base, be provided with through hole, described base is fixedly connected In moulding position, described base is tightly connected with moulding position, and described through hole is connected and through hole with connector inner space Centrage overlap with the centrage of connector, described base, elastic support, moulding position, water conservancy diversion position and force part Between be provided with accommodate elastic support deformation position cavity.

In this technical scheme, housing is semi-enclosed integrative-structure, its opening is arranged far from needing fill to make The position of sealing function is provided during industry, away from needing to provide the position of guide functions during washing and cleaning operation, therefore tie in housing and base Closing the unique connecting portion producing after forming integrative-structure does not affect fill operation, does not affect washing and cleaning operation；Surface of shell is Continuously, seamless structure.So, this utility model is migrated (non-to reasonable position using integral housing and connecting portion Working region) technical scheme, completely eliminate in prior art because gap is present in the health that fill job area leads to Hidden danger and the problem of cleaning inconvenience.

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

The effect of elastic support be maintain sealing position deformation tendency and undertake external force effect (this external force is mainly The counteracting force of other component feedback).Elastic support is not located at enclosure interior with natural expansion mode in an initial condition, And be affected by from the package action of sealing position be in be extruded state, it is closely connected with sealing position；For accommodating The effect of the chamber of elastic support is to accommodate elastic support and so that elastic support is deformed it is ensured that elastic support Sealing position can be promoted to deform laterally and protrude.

The key of control elastic support deformation tendency is the shape of chamber, confined planes in the technical scheme of the application Effect is not only to guarantee that the position of elastic support is restricted it is often more important that controlling elastic support to have to close all the time The trend that envelope position is stretched, reaches the purpose promoting sealing position to deform laterally.

When using this piston, interference fit state forces sealing position toward contract, so, promotes inside sealing position So that elastic support deformation, after elastic support deformation, part is to base, elastic support, moulding for elastic support Cavity migration between position, water conservancy diversion position and force part.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.

Sealing position is located between moulding position and water conservancy diversion position, and sealing position side and water conservancy diversion position be connected as a single entity, 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, sealing position has more elasticity than moulding position.Elastic support easily makes sealing position in the case of pushing sealing position Outwards lateral bend, shows as outwards heaving in sealing position on housing.Therefore, the deformation behaviour of sealing position is to ensure that this work The key factor being tightly connected relation that plug can be set up with other parts, it makes raised and other parts foundation more closely connect Connect relation.Most of all, piston obtains compensation function in high spot, because larger displacement ensure that after such setting The raised response mechanism that can be stretched out by deformation acquisition under state of wear, thus permissible in the case of raised abrasion 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 situation in the direction of motion for the centerline dip of piston, but in implementation process this situation can be subject to many Reason and cause, for example install that not in place, manufacturing deficiency, part are impaired, manipulating object unstable etc..Once piston occurs incline Oblique situation, except raised other positions (especially end) have situation about contacting with the surface of other parts on housing, The frictional force that piston movement is subject to therefore increases.But, now the projection on housing remain to the surface of other parts set up close Envelope connects that is to say, that sealing position is still in effective working condition.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 of the external diameter less than sealing position, so defines rank at the elastic position of housing Ladder-shaper structure, in tilting of the piston, the end of housing can be away from the surface of other parts, thus it is extra to avoid piston can be subject to Frictional force.

Moulding position is the position that housing is connected with base.The internal diameter at moulding position for the housing is slightly larger than the external diameter of base, Firmly specify together by binding agent when both are combined together, 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 got over Greatly, pliability is poorer, and wall thickness value is less, pliability is better.For making moulding position reach rational pliability, described moulding position Wall thickness be designed to the wall thickness in high spot more than sealing position, but still need to keep the external diameter of sealing position to be more than moulding position External diameter.

Base is disc-shaped structure, and it is only fixedly connected with moulding position in its side, by setting inside moulding position Put the stopper slot of annular, the side of described base is stepped；When the maximum position of the diameter at the edge of base be embedded in spacing In groove, base establishes, with housing, the relation being fixedly connected by interference fit.The design of stopper slot can effectively improve 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, described groove 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 and 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 is located between force part and base on the centrage bearing of trend of piston.

As of the present utility model preferably, described guide face is in the shape being made up of side and the upper bottom surface of round platform.Water conservancy diversion The structure in face is conducive to liquid to flow to casing peripheral under gravity and leave piston it is ensured that guide face will not heap hydrops Body, is easy to thoroughly cleaning piston.Equally for thoroughly cleaning piston, described base is provided with guide face, described guide face 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.

Piston extend in the connector of piston except surface is set threaded connecting rod when using, and reaches installation purpose Outward, using entire body can also be all screw thread bolt, described bolt passes through through hole and one end to be flexibly connected with connector, described The bolt other end is located at susceptor surface.So can also be established a connection with piston by setting female connecting rod, reach To installation purpose.

This utility model adopts technique scheme: filling valve pass through by plunger designs for integral type surface texture, and Unique for piston face connecting portion is disposed away from the position of fill job area, thus ensure piston face with continuous, The region that seamless feature flows through positioned at material.The clean surface degree of piston can meet the requirement of sterile filling, piston Expanded using field, thoroughly avoided piston face gap to filling valve using impact.

Brief description

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

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

Fig. 2 is the structural representation 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 piston of the first embodiment of this utility model；

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

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

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

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

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

Figure 11 is the structural representation of this utility model second embodiment.

Specific embodiment

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

As shown in Fig. 2 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 shown in figure 3, this piston 2 includes housing 3rd, base 4, connector 5, elastic support 6.Housing 3 and base 4 are food grade plastic, connector 5 is metal parts, elasticity Support body 6 is to have resilient rubber components.Base 4, connector 5 and elastic support 6 are all arranged in housing 3, entirely live The outer surface of plug 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 sealing position 11 and moulding position 12 again.

As shown in figure 5, the cross section of the main body section 7 of housing 3 is t shape structure, water conservancy diversion position 9 is 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 becoming and this surface is the guide face 13 at water conservancy diversion position 9, guide face 13 belongs to the outer surface of housing 3；Force part 10 Positioned at water conservancy diversion position 9 inner side and the centre position at water conservancy diversion position 9, one end of force part 10 is connected with water conservancy diversion position 9, integrally On see, both belong to two parts of integrative-structure.The centrage of force part 10 is overlapped with the centrage at water conservancy diversion position 9, and The centrage of both is all overlapped with the centrage of piston 2.

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 is engaged with the female thread of force part 10；It is provided with flange 14, the external diameter of flange 14 and stress 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 Achieve in the close annexation relying on the body of connector 5 and force part 10 and closely connect with the end of force part 10 The purpose connecing, therefore connector 5 define annexation closely on the whole with housing 3.In being additionally provided with inside connector 5 Screw thread.It is screwed into that connector 5 is internal just to 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 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.

The sealing position 11 at elastic position 8, moulding position 12 are all the relatively thin tubular structure of wall thickness.Sealing position 11 is provided with The position of largest outside diameter.As shown in fig. 7, sealing position 11 be provided with around housing 3 centrage be force part 10 centrage The projection 15 of distribution, raised 15 are distributed at whole sealing position 11, and raised 15 external diameter is the external diameter of whole piston 2 maximum, So raised 15 are just directly connected with water conservancy diversion position 9, that is, projection is positioned at being somebody's turn to do that sealing position 11 is connected with water conservancy diversion position 9 Side.The side of sealing position 11 is directly connected with water conservancy diversion position 9, and the opposite side of sealing position 11 is connected with moulding position 12.As Fig. 6, shown in 8, moulding position 12 is provided with stepped construction in this side being connected with sealing position 11, and its external diameter is than sealing position 11 external diameters at raised 15 are much smaller, and this also makes raised 15 architectural features more with obvious 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 raised 15 Wall thickness.The inner surface in this side being connected with sealing position 11 for the moulding position 12 is the surface to force part 10 for the inner surface Distance be in the state that gradually changes on the bearing of trend along piston 2 centrage, 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-shape.

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 is arranged in chamber 18 and can be subject to It is 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 of the sealing position 11 of extruding housing 3 eventually.Because sealing position 11 has pliable and tough elastically-deformable feature, therefore Arch upward to the direction of the centrage away from piston 2 under the squeezing action of elastic support 6, the projection 15 of 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 towards moulding position 12 and is subject to Towards parallel with the bearing of trend of the centrage of piston 2, confined planes 16 arrive forced section for region between power position 10 and opening The distance on the surface of position 10 gradually decreases in opening direction.The effect of confined planes 16 makes width on opening direction for the chamber 18 Degree is gradually reduced, and limits the range of activity of elastic support 6.

As shown in Fig. 3,10, 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 is connected 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 will be embedding for this larger for base 4 external diameter end Enter in stopper slot 17, so that base 4 is fixedly mounted on housing 3；One end of force part 10 is embedded in groove 20 so that convex Edge 14 is located between force part 10 and base 4 on the centrage bearing of trend of piston 2；Connect inside through hole 19 and connector 5 Logical, through hole 19, the centrage of connector 5 are all overlapped with the centrage of piston 2.The end face at this larger end of external diameter for the base 3 sets 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 Need adaptive to increase the quantity of limited block 29 and around stopper slot 17 setting distribution according to actual condition, for example spacing Block 29 quantity is three, four, thus obtains the embodiment of alternate manner.Limited block 29 is located at the opening 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, in base 4, bullet by the stop at moulding position 12 Property supporter 6, moulding position 12, yet forms both receiving elastic support 6 deformation position between water conservancy diversion position 9 and force part 10 Cavity 23.Another end face of base 4 and its surface are located at the one of the outside of housing 3 and the outer surface as housing 3 Part, another end face of this base 4 is guide face 21, and guide face 21 is the shape of the side of round platform；And base 4 is at this The centre on surface is in plane, when using for be provided with externally threaded connecting rod and dock.

Piston 2 is arranged in housing 3, the effect of raised 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 Migration in cavity 23.Now, elastic support 6 is collected compressing, and therefore, promotes the exposure level between raised 15 and housing 3 Closely.Due to, elastic support 6 is in compressive state, once the annexation at sealing position 11 changes, this A little change includes raised 15 situations about wearing and tearing, and just can continue to press on remaining raised 15 by elastic support 6 and tightly be squeezed in On housing 3, and continuously form the relation that is closely tightly connected.Most importantly the connecting portion on piston 2 surface is located at valve body 1 It is not involved in the region of fill operation, the connecting portion on piston 2 will not contacting material and only continuous, the bright and clean table of piston 2 Face can contacting material.

This utility model 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 passes 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 kind of filling valve it is characterised in that: this filling valve is provided with valve body (1) and piston (2), and described piston (2) activity is installed In valve body (1), described piston (1) includes housing (3), base (4), connector (5), elastic support (6), described housing (3) it is provided with main body section (7) and elastic position (8) for integral type structure, described housing (3), described main body section (7) includes leading Stream position (9) and force part (10), described water conservancy diversion position (9) is 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 one end company of guide face (13), the centre position of inner side and force part (10) Connect, described housing (3) is t-shaped in the cross section of main body section (7), described connector (5) is tubular structure, connector (5) is interior Portion is provided with screw thread, and described connector (5) Guan County is contained on force part (10), the centrage of described connector (5) and housing (3) Centrage overlap, described elasticity position (8) in tubular construction, described elasticity position (8) be distributed in water conservancy diversion position (9) edge and It is located at the inner side at water conservancy diversion position (9), the outer surface of described elasticity position (8) and guide face (13) together with force part (10) Coherent, described elasticity position (8) includes sealing position (11), moulding position (12), the side of described sealing position (11) with lead Stream position (9) connects, the opposite side of described sealing position (11) is connected with moulding position (12), described sealing position (11) appearance Face is provided with the projection (15) around the distribution of housing (3) centrage, and described housing (3) is in the largest outside diameter at raised (15) place, described This side of being connected with water conservancy diversion position (9) positioned at sealing position (11) of projection, the inner surface of described moulding position (12) is provided with spacing Face (16), described sealing position (11), moulding position (12), formed for holding between water conservancy diversion position (9) and force part (10) Receive the chamber (18) of elastic support (6), described confined planes (16) are provided with one and open towards chamber (18), described chamber (18) Mouthful, described opening arrives force part towards the region between moulding position (12) and force part (10), described confined planes (16) (10) distance on surface gradually decreases in opening direction, and described elastic support (6) cross section is also trapezoidal, described elasticity Supporter (6) is placed in chamber (18) with compressive state, and described elastic support (6) is only connected with sealing position (11) and makes close Envelope position (11) is subject to the extruding from elastic support (6), is provided with through hole (19), described base (4) in the middle of described base (4) Be fixedly connected in moulding position (12), described base (4) and moulding position (12) are tightly connected, described through hole (19) be connected Part (5) inner space connects and the centrage of through hole (19) is overlapped with the centrage of connector (5), described base (4), elasticity Supporter (6), moulding position (12), be provided with receiving elastic support (6) deformation between water conservancy diversion position (9) and force part (10) The cavity (23) at position.

2. according to claim 1 filling valve it is characterised in that: the upper external diameter of described moulding position (12) be less than sealing The external diameter of position (11).

3. according to claim 2 filling valve it is characterised in that: the wall thickness of described moulding position (12) be more than sealing position (11) in the wall thickness at raised (15) place.

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

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

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

7. according to claim 1 filling valve it is characterised in that: described guide face (13) is in by the side of round platform and upper bottom The shape of face composition, described base (4) is provided with guide face (21), and described guide face (21) is in the shape of the side of round platform Shape.

8. according to claim 1 filling valve it is characterised in that: be provided with elastic support (6) institute on described base (4) Limited block (29) in position.

9. according to claim 1 filling valve it is characterised in that: this filling valve also includes bolt (22), described bolt (22) Through through hole (19) and one end be flexibly connected with connector (5), described bolt (22) other end be located at base (4) surface.