CN204310807U - A kind of filling valve - Google Patents

Abstract

The utility model provides a kind of filling valve, comprise valve body and blocked shot, valve body has the inner chamber and reducing that run through the upper and lower two ends of valve body, the bottom of blocked shot is provided with poted assemblies, poted assemblies comprises sealing shroud and is wrapped in the pedestal in sealing shroud, be bolted between poted assemblies and blocked shot, the stud of bolt is threaded with blocked shot through after pedestal and sealing shroud successively from the bottom of sealing shroud, the bottom of blocked shot has for the tapped bore with stud screw thread fit, stud is positioned at bolt cap and is at one end arranged with cushion block, cushion block is clipped between sealing shroud and bolt cap, the top of sealing shroud and the bottom surface of blocked shot offset, the external diameter of sealing shroud reduces on top and bottom end to form reduction section all gradually.The utility model is by sealing shroud fixation, tight with reducing fitted seal, without leakage, the replaceable use of reduction section at sealing shroud upper and lower two ends place.

Description

A kind of filling valve

Technical field

The utility model relates to the filling valve that a kind of filling apparatus uses.

Background technology

Filling valve comprises valve body 1 and blocked shot 2, its structure as shown in Figure 7, it is inner that blocked shot 2 is positioned at valve body 1, and the mode contacted with face by face between blocked shot 2 with valve body 1 forms liquid sealing annexation, and valve body 1 is positioned at the connecting portion of blocked shot 2 this end that valve body 1 is provided with discharging opening; Liquid sealing connection structure described here is made up of the sphere of the sphere on blocked shot, valve inner, and the radius of two spheres is different, therefore forms the connection mode of linear contact lay after contact.Sphere between two different radiis contacts with each other and forms the relation of line connection, and reaches seal request with this, higher to the processing request of sphere; In addition, require harsh to the setting accuracy of blocked shot, if the centre of sphere of two spheres has the situation of the line of centers deviating from blocked shot, the connection tightness degree so between two spheres presents difference at different parts.Just because of this, it is not tight that the filling valve of actual production and processing gained there will be liquid sealing, there is the situation of leakage.

Summary of the invention

Technical problem to be solved in the utility model is the situation that the liquid sealing that the existing filling valve of improvement occurs is not tight, there is leakage, object is to provide a kind of filling valve, sealing shroud fixation, tight with valve body fitted seal, without leakage, the replaceable use of operate portions at sealing shroud upper and lower two ends place.

For solving above-mentioned existing technical matters, the utility model adopts following scheme: a kind of filling valve, comprise valve body and blocked shot, described valve body has inner chamber, described blocked shot is arranged in inner chamber, described valve body reduces to form reducing at inner chamber one end place internal diameter, described blocked shot is being provided with poted assemblies towards one end of reducing, described poted assemblies comprises pedestal and parcel and is attached to the sealing shroud of base-plates surface, be bolted between described pedestal and blocked shot, described sealing shroud one end is clamped between pedestal and bolt, the other end is clamped between pedestal and blocked shot, the external diameter of described sealing shroud reduces at two ends place to form operate portions all gradually, the outside face of described operate portions spherically, the diameter of described pedestal diminishes gradually at each operate portions place of correspondence and forms the support zone in support works portion, in described operate portions, the wall thickness of any position is all equal, described valve body realizes being sealed and matched with poted assemblies by the exterior surface of its wall in reducing place and operate portions.

Pedestal plays a part to support and fix to sealing shroud, sealing shroud is attached on pedestal, as sealing shroud by adhesion, that deadlocked and Shooting Technique is directly injection-moulded in pedestal is first-class, make between sealing shroud and pedestal, to form compact siro spinning technology relation, unless under stripping state, otherwise sealing shroud can not opposite base generation relative motion, sealing shroud good fixing effect; The stud of bolt from sealing shroud deviate from blocked shot one end successively through sealing shroud this end wall body, through pedestal, pass sealing shroud other end wall body after be threaded with blocked shot, sealing shroud, pedestal all have the through hole for making stud pass, sealing shroud fixation, convenient disassembly, sphere is arranged on operate portions surface can guarantee that the surface of operate portions can tightly be covered on wall that valve body is positioned at reducing place to ensure sealing effectiveness; Pedestal forms the support zone in support works portion at operate portions place, operate portions can be increased and contact dynamics with the wall in reducing place on valve body to increase sealing effectiveness, torsional deflection degree in operate portions working process can be reduced to extend the service life of sealing shroud, operate portions torsional deflection direction in the course of the work can also be controlled, the crushed element of sealing shroud is made to be close to wall in reducing place on valve body, and along the direction being parallel to this wall to away from reducing Direction distortion.In the utility model, sealing shroud upper and lower two ends place all arranges operate portions, replaceable use; Sphere can be the face identical with spherome surface, also can be the level and smooth cambered surface being similar to spherome surface.

As preferably, the stud of described bolt is positioned at bolt cap and is at one end provided with packing ring, described packing ring is clipped between sealing shroud and bolt cap.Bolt cap is avoided to contact with sealing shroud and damage sealing shroud when the effect of packing ring is screws.

As preferably, the two ends end face of described sealing shroud all has the first flange of cyclic structure, two the first flanges are symmetrical arranged, described blocked shot all has the first groove for coordinating with the first flange towards the end face of reducing one end and packing ring towards the end face of blocked shot one end, the two ends end face of described pedestal all has the second groove of cyclic structure, on the inwall of described sealing shroud, corresponding each second groove all has for the second flange with this second groove fit, the external diameter of described first flange is greater than the external diameter of the second flange, the internal diameter of described first flange is greater than the internal diameter of the second flange.First flange at sealing shroud two ends and the second flange form fixed sturcture with the first groove and the second groove fit respectively, sealing shroud is located at this position, can reduce the torsional deflection of sealing shroud at this position and to be connected firmly to reach, to increase the object of the sealing effectiveness between pedestal and packing ring; External diameter due to the first flange is greater than the external diameter of the second flange, the internal diameter of the first flange is greater than the internal diameter of the second flange, make the first flange and the second flange in being dislocatedly distributed, pedestal has the application force of sealing shroud top to the first groove on blocked shot being at one end positioned at the part outside this end second groove towards blocked shot, pedestal has the application force of sealing shroud top to the first groove on packing ring being at one end positioned at the part outside this end second groove towards packing ring, can control the torsional deflection of sealing shroud at the first flange and the second position, flange place further.

As preferably, be sealed and matched between described packing ring and bolt cap.Be sealed and matched and can prevent filling liquid from entering between sealing shroud and pedestal from gap therebetween, can health be guaranteed, also can prevent sealing shroud and pedestal from mutually peeling off and the sealing effectiveness of sealing shroud and service life are affected.

As preferably, the end face that described bolt cap deviates from blocked shot one end is plane.The reason being arranged to plane is that bolt outside does not have the channel-shaped structure such as cross recess, flat recess as screw, can avoid incrustation like this, ensure health.

As preferably, the diameter of described pedestal all first diminishes gradually to become gradually at upper and lower two ends place again and forms neck structure greatly, and on the madial wall of described sealing shroud, corresponding neck structure place has the bulge-structure for coordinating with neck structure.At pedestal, neck structure is set near two ends place, limits the deformation range of sealing shroud, the deformation range of sealing shroud can be controlled, sealing shroud crushed element is leaned on as far as possible on the sphere of valve inner, increase area of contact, lift-off seal effect.

As preferably, described base-plates surface has trickle screw thread.Trickle screw thread, for increasing face area, makes sealing shroud can firmly connect after injection molded on pedestal.

Beneficial effect:

A kind of filling valve that the utility model adopts technique scheme to provide, by arranging operate portions at the two ends of sealing shroud, arranging support zone at the two ends of pedestal, sealing shroud fixedly secures on pedestal, operate portions and valve body fitted seal is tight, without leakage, the replaceable use of operate portions at sealing shroud two ends place.

Accompanying drawing explanation

Fig. 1 is cutaway view of the present utility model;

Fig. 2 is the enlarged drawing at A place in Fig. 1;

Fig. 3 is the cutaway view of valve body in Fig. 2;

Fig. 4 is the cutaway view of sealing shroud;

Fig. 5 is the cutaway view of pedestal;

Fig. 6 is the cutaway view of packing ring;

Fig. 7 is the structural representation of existing filling valve.

Detailed description of the invention

Be a kind of embodiment of a kind of filling valve of the utility model as shown in Figures 1 to 6, it comprises valve body 1 and blocked shot 2, valve body 1 has inner chamber 11, valve body 1 reduces gradually to form reducing 12 at inner chamber 11 bottom end internal diameter on the axial direction of valve body 1, valve body is similar to the side of a frustum cone structure at the wall at reducing 12 place, blocked shot 2 be arranged in inner chamber 11 and can inner chamber 11 up-and-down movement with near or away from reducing 12, the bottom of blocked shot 2 is provided with poted assemblies, it sealing component integration is axially symmetric structure, be bolted between itself and blocked shot 2, the pedestal 4 that sealing assembly comprises sealing shroud 3 and is wrapped in sealing shroud 3, sealing shroud 3 has the cavity 31 for holding pedestal 4, the stud 51 of bolt is threaded with blocked shot 2 from the bottom of sealing shroud 3 through after sealing shroud 3 and pedestal 4, the bottom wall body of sealing shroud 3, the top wall body of pedestal 4 and sealing shroud 3 all has the through hole 7 for making stud 51 pass, the bottom of blocked shot 2 has for the tapped bore 21 with stud 51 screw thread fit, stud 51 is positioned at bolt cap 52 and packing ring 6 is at one end installed, packing ring 6 also has the through hole 7 for making stud 51 pass, packing ring 6 is clipped between sealing shroud 3 and bolt cap 52, the top of sealing shroud 3 and the bottom surface of blocked shot 2 offset, the external diameter of sealing shroud 3 reduces on top and bottom end to form operate portions 32 all gradually, valve body realizes being sealed and matched with poted assemblies by the exterior surface of its wall at reducing 12 place and operate portions 32.The top of sealing shroud 3 and bottom end face all have around stud first flange 33 in the form of a ring of 51 1 weeks, two the first flanges 33 are symmetrical arranged, the first groove 8, first groove 8 that the bottom end face of blocked shot 2 and the top end face of packing ring 6 all have for coordinating with the first flange 33 is the annular groove that structure is mated with the first flange 33.The top end face of pedestal 4 has around stud second groove 41 of 51 1 weeks, and on the inner roof wall of sealing shroud 3, corresponding second groove 41 place has the second flange 34 for coordinating with the second groove 41.The bottom end face of pedestal 4 has around stud second groove 41 of 51 1 weeks, and on the interior diapire of sealing shroud 3, corresponding second groove 41 place has the second flange 34 for coordinating with the second groove 41.Second groove 41 is annular groove, and the second flange 34 is the annular lip with the second groove 41 structure matching.Along pedestal 4 axially from the middle part of pedestal 4 to the direction that the two ends of pedestal 4 extend, the external diameter of pedestal 4 all first diminishes gradually at the two ends place of pedestal 4 and becomes large formation neck structure 42 more gradually, the madial wall of sealing shroud 3 all has the bulge-structure 35 for coordinating with neck structure 42 at corresponding two neck structure 42 places, coordinated by neck structure and bulge-structure, limit and control the deformation range of sealing shroud, sealing shroud crushed element is leaned on as far as possible on the sphere of valve inner, increase area of contact, lift-off seal effect.Be sealed and matched by seal ring 9 between packing ring 6 and bolt cap 52, packing ring 6 has the annular groove 61 for installing seal ring.The bottom end face of bolt cap 52 is plane, can avoid incrustation, ensures health.The outside face of operate portions 32 is sphere, pedestal 4 on the surface at operate portions 32 place also for being parallel to the sphere of operate portions 32 outside face, after being arranged to the parallel structure of two spheres, spacing between two spheres is equal, in operate portions 32, the wall thickness of any position is all equal, the sphere of sealing shroud and valve body easily form tangent position relationship at the wall of reducing place, guarantee on the sphere that sealing shroud can tightly be covered in valve body after deformation, pedestal 4 pairs of operate portions 32 application forces are even, can control operate portions 32 torsional deflection degree in the course of the work.The surface of pedestal 4 arranges fine thread and forms fold face, increases the face area of pedestal 4, increases and the area of contact of seal ring 9, the Joint strenght increasing pedestal 4 and seal ring 9 with this.

In the present embodiment, sealing shroud adopts Shooting Technique injection molded on pedestal, poted assemblies is a laterally zygomorphic symmetrical structure on the whole, the two ends up and down of sealing shroud all form operate portions 32, one end makes to have damaged, change another end on station, such poted assemblies with twice, can extend its replacement cycle.

Claims (7)

1. a filling valve, comprise valve body (1) and blocked shot (2), described valve body (1) has inner chamber (11), described blocked shot (2) is arranged in inner chamber (11), described valve body (1) reduces to form reducing (12) at inner chamber (11) one end place internal diameter, described blocked shot (2) is being provided with poted assemblies towards one end of reducing (12), it is characterized in that: described poted assemblies comprises pedestal (4) and wraps up and be attached to the surperficial sealing shroud (3) of pedestal (4), be bolted between described pedestal (4) and blocked shot (2), described sealing shroud one end is clamped between pedestal and bolt, the other end is clamped between pedestal and blocked shot, the external diameter of described sealing shroud (3) at two ends place reduces to form operate portions (32) all gradually, the outside face of described operate portions (32) spherically, the diameter of described pedestal (4) diminishes gradually at each operate portions of correspondence (32) place and forms the support zone in support works portion, the wall thickness of the upper any position of described operate portions (32) is all equal, described valve body (1) realizes being sealed and matched with poted assemblies by the exterior surface of its wall at reducing (12) place and operate portions (32).

2. a kind of filling valve according to claim 1, it is characterized in that: the stud (51) of described bolt is positioned at bolt cap (52) and is at one end provided with packing ring (6), described packing ring (6) is clipped between sealing shroud (3) and bolt cap (52).

3. a kind of filling valve according to claim 2, it is characterized in that: the two ends end face of described sealing shroud (3) all has first flange (33) of cyclic structure, two the first flanges (33) are symmetrical arranged, described blocked shot (2) all has the first groove (8) for coordinating with the first flange (33) towards the end face of reducing (12) one end and packing ring (6) towards the end face of blocked shot (2) one end, the two ends end face of described pedestal (4) all has second groove (41) of cyclic structure, on the inwall of described sealing shroud (3), corresponding each second groove (41) place all has the second flange (34) for coordinating with this second groove (41), the external diameter of described first flange (33) is greater than the external diameter of the second flange (34), the internal diameter of described first flange (33) is greater than the internal diameter of the second flange (34).

4. a kind of filling valve according to Claims 2 or 3, is characterized in that: be sealed and matched between described packing ring (6) and bolt cap (51).

5. a kind of filling valve according to Claims 2 or 3, is characterized in that: the end face that described bolt cap (51) deviates from blocked shot (2) one end is plane.

6. a kind of filling valve according to claim 1, it is characterized in that: the diameter of described pedestal (4) becomes gradually again and forms greatly neck structure (42) after support zone place diminishes gradually, and on the madial wall of described sealing shroud (3), corresponding neck structure (42) place has the bulge-structure (35) for coordinating with neck structure (42).

7. a kind of filling valve according to claim 1, is characterized in that: described pedestal (4) surface has trickle screw thread.