CN208886052U - A kind of mechanical sealing valve assembly - Google Patents

Abstract

The utility model relates to a kind of mechanical sealing valve assemblies, including mechanical sealing valve, oil filling pipe and Ya Quan, and wherein mechanical sealing valve pocket is located at one end of oil filling pipe, and tooth circle is located at the other end of oil filling pipe and the outer of tooth circle is connected together with oil filling pipe.The utility model has the beneficial effects that mechanical sealing valve preferably limits in oil filling pipe, circumferentially opposed movement will not occur, simultaneously, mechanical guide groove is arranged in conveniently to be inserted into fixed direction into shell, the inner peripheral surface of buckling parts equipped with the limit fin cooperated with the limiting slot, it is therefore prevented that the circumferentially opposed movement between tooth circle and oil filling pipe.

Description

A kind of mechanical sealing valve assembly

Technical field

The utility model relates to oil filling pipe technical field more particularly to a kind of mechanical sealing valve assemblies.

Background technique

The promulgation of six regulation of state is more harsh to the requirement of fuel system discharge vaporization, in order to reduce the carbon in refueling process Hydrogen (C, H) discharge amount, guarantee ORVR test by generally using liquid-seal type or being mechanically sealed to oil filling orifice of fuel tank, because There is no the abrasion of sealing element for liquid-seal type, there is no the problem of durability, advantage of lower cost, so possessing on the market very high Occupation rate.But for some commercial vehicles and light truck since oil filling pipe is shorter, fluid-tight cannot achieve, therefore can only be using machinery Formula sealing, but mechanical seal valve installs positioning in oil filling pipe and is a problem, therefore mechanical seal valve assembly comes into being.

Mechanical sealing valve is the valve for preventing oil gas volatilization in refueling process, is mounted in oil filling pipe.It refuels Pipe will carry out high temperature after being welded on fuel tank, but be affected after mechanical seal valve high-temperature baking to mechanical seal valve performance, and In view of mechanical seal valve replacement problem after sale, and the tooth circle of conventional gasoline pipe assembly is replaced, is capable of fixing fuel door and refueling nozzle It can hang arms, need a set of mechanical seal valve assembly effective solution problem above of R & D design.

Utility model content

The purpose of this utility model is to provide a kind of mechanical sealing valve assembly for above-mentioned status.

The technical solution adopted in the utility model: a kind of mechanical sealing valve assembly, including mechanical sealing valve, oil filling pipe With tooth circle.

The sealing valve shell is formed with circular upper opening and under shed, and both upper opening and under shed eccentric setting make The sealing valve shell has first surface and the second curved surface, and the medial surface of the first surface and the second curved surface is collectively formed slotting Entering the channel of fuel oil gun mouth, opens up venthole on the first surface, the venthole is equipped with the pressure relief device, and described the Mounting groove is opened up on the inside of the upper end of two curved surfaces, the outer peripheral surface of second curved surface is equipped with guide groove, the outer wall edge of the under shed It extends radially outwardly to form the mistake proofing portion of annular, the medial surface of the second curved surface described in the lower end edge of the mounting groove is equipped with to described Seal center two boss outstanding of valve shell, the radially inwardly extending formation annular convex platform of the lower edge of the under shed, institute Sealing ring is stated to be arranged on the annular convex platform；

The lower end of the sealing valve liner is liner base portion, and upper end is liner lip, wherein the lower end of the liner base portion At a notch corresponding with the venthole, the upper edge part of the liner lip is fastened in the mounting groove；

The oil filling pipe is from top to bottom successively arranged upper section, middle section and lower section, the upper section for accommodating tooth circle, it is described on The upper end at end is equipped with limiting slot, the middle section for accommodating the mechanical sealing valve, the inner wall in the middle section be equipped with it is described Guide groove mutual cooperation convex block；

The tooth circle includes insertion section and buckling parts, and the internal diameter of the insertion section is identical as the internal diameter of the upper section, described Ring sets a rubber pad between the lower end of insertion section and the upper opening of the sealing valve shell, and the inner peripheral surface of the insertion section is equipped with The upper end of the insertion section, the inner peripheral surface of the buckling parts and the insertion section periphery is arranged in spiral burr, the buckling parts There are spacing, the buckling parts is equipped at intervals at least one buckle teeth, the upper end of the inner peripheral surface of the buckling parts and the insertion in face The limit fin cooperated with the limiting slot is equipped between the upper end in portion.

The beneficial effects of the utility model are: mechanical sealing valve preferably limits in oil filling pipe, axial direction will not occur With circumferential relative motion, meanwhile, be arranged that mechanical guide groove is convenient to be inserted into fixed direction into shell, buckling parts it is interior Circumferential surface equipped with the limit fin cooperated with the limiting slot, it is therefore prevented that the circumferentially opposed movement between tooth circle and oil filling pipe；? After the fuel tank assembly pyrolytic coating for having welded oil filling pipe, then mechanical sealing valve is installed again, is replaced by the tooth circle of redesign The function (fixed fuel door, refueling nozzle are hung arms) of traditional tooth circle, and can be fixed with oil filling pipe by buckle structure.

Detailed description of the invention

Attached drawing involved in the utility model embodiment description is simply introduced, in order to the utility model reality It applies the technical solution in example to be become apparent from, completely illustrated, some implementations of following attached drawing only for the utility model Example, is not intended to limit the utility model, under the premise of without other creative works, it is clear that can be according to these attached drawings Obtain other accompanying drawings.

Fig. 1 is a kind of explosive view of mechanical sealing valve assembly of the utility model；

Fig. 2 is the perspective view of mechanical sealing valve in Fig. 1；

Fig. 3 is the structural schematic diagram of sealing valve shell shown in Fig. 2；

Fig. 4 is the structural schematic diagram at another visual angle of sealing valve shell shown in Fig. 3；

Fig. 5 is the structural schematic diagram of sealing valve liner shown in Fig. 2；

Fig. 6 is the structural schematic diagram of pressure relief device；

Fig. 7 is the structural schematic diagram of oil filling pipe shown in FIG. 1；

Fig. 8 is the structural schematic diagram of tooth circle shown in FIG. 1；

The rearview of Fig. 9 tooth circle shown in Fig. 8；

Figure 10 is the perspective view of mechanical sealing valve assembly.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figure 1, the utility model provides a kind of mechanical sealing valve assembly, including mechanical sealing valve 1, oil filling pipe 2 and tooth circle 3, wherein mechanical sealing valve 1 is set in one end of oil filling pipe 2, and tooth circle 3 is located at the other end and tooth of oil filling pipe 2 The outer of circle 3 is connected together with oil filling pipe 2.It should be noted that mechanical sealing valve 1 is set in close to oil filling pipe 2 such as Fig. 1 Lower end position, and tooth circle 3 is fastened on the upper end of oil filling pipe 2.

In conjunction with Fig. 2, mechanical sealing valve 1 includes the sealing valve shell 11 of coaxial arrangement, sealing valve liner 12, sealing ring 13 With pressure relief device 14, one end of sealing ring 13 is connected to the inside of the lower end of sealing valve shell 11, the upper end of sealing valve liner 12 Be threaded in the upper end inner edge of sealing valve shell 11, lower end abuts with sealing ring 13, the side of sealing valve liner 12 with it is close The inner wall for sealing valve shell 11 limits cooperation, and sealing valve shell 11 is equipped with venthole 113, and pressure relief device 14 is threaded through the venthole In 113.

In conjunction with Fig. 2~3, seals valve shell 11 and be formed with circular upper opening 11A and under shed 11B, upper opening 11A is under Both opening 11B eccentric setting makes to seal valve shell 11 with first surface 111 and the second curved surface 112,111 He of first surface The channel of insertion fuel oil gun mouth is collectively formed in the medial surface of second curved surface 112, opens up the venthole on first surface 111 113, the upper end inside of the second curved surface 112 opens up mounting groove 1120, and the outer wall of the under shed 11B extends radially outward to be formed The mistake proofing portion 11C of annular, the medial surface of the second curved surface of lower end edge 112 of mounting groove 1120 are equipped with the center to sealing valve shell 11 Two boss 1121 outstanding；The radially inwardly extending formation annular convex platform 11B1 of the lower edge of under shed 11B.Preferably, Fig. 4, The outer peripheral surface of second curved surface 112 is equipped with guide groove 112`, and the depth of guide groove 112` from top to bottom is gradually reduced.

Preferably, two boss 1121 are arranged relative to venthole 113 with 90 °.

Such as Fig. 5, the lower end of sealing valve liner 12 is liner base portion 121, and upper end is liner lip 122, wherein liner lip 122 upper edge part is arranged in mounting groove 1120 and abuts with the limit of boss 1121, and the lower end of liner base portion 121 is at one A notch 1210, notch 1210 are correspondingly arranged with venthole 113；Liner lip 122 has labial surface 1221 and two bearing surfaces 1222, the minimum value of the outer diameter of the outer peripheral surface of labial surface 1221 is not less than the outer diameter of liner base portion 121, bearing surface 1222 be on to Lower extension is simultaneously smoothly connected to liner base portion 121 and the class triangle longitudal section that is formed, the spacing etc. between two boss 1121 Spacing between two bearing surfaces 1222.

With continued reference to Fig. 5, in 12 seal with screwed joint valve shell 11 of sealing valve liner, the upper surface of boss 1121 is equipped with Screw hole, the upper edge of two bearing surfaces 1222 extend radially outward to form interconnecting piece 1222` respectively, and interconnecting piece 1222` is equipped with Through-hole, wears interconnecting piece 1222` through-hole by screw and the screw hole for going deep into boss 1121 is fixed.

Sealing valve liner 12 is put in sealing valve shell 11, and boss 1121 can be non-interference or mutual with bearing surface 1222 It abuts, since interconnecting piece 1222` is limited in mounting groove, while the minimum value of the outer diameter of the outer peripheral surface of labial surface 1221 is greater than interior Serve as a contrast base portion 121 outer diameter so that sealing valve liner 12 and sealing valve shell 11 between will not occur it is relatively slipping in the circumferential direction, and then have There is preferable stability.

In conjunction with Fig. 4, venthole 113 includes centre bore 1131 and the side hole 1132 for being arranged at intervals on 1131 periphery of centre bore.

It include compression bar 141 and diaphragm 142 in conjunction with Fig. 6 pressure relief device 14, wherein compression bar 141 wears centre bore 1131, diaphragm 142 are installed on compression bar, and diaphragm 142 can switch in the state of blocking and opening side hole 1132.

It should be noted that compression bar 141 is by the way of riveting, welding or bonding in centrally disposed hole 1131.When When air pressure in fuel system is excessive, varus can occur for diaphragm 142, and gas leakage completes pressure release.It will also be appreciated that diaphragm 142 can be by control, and varus, which actively occurs, makes gas leakage complete pressure release.

In a preferred embodiment, the posterior edges of the upper end of sealing valve liner 12 and sealing valve shell 11 after Side edge radian is identical, to realize the two preferably cooperation, and the further circumferentially opposed movement of both limitations generation.

Further, as shown in figure 5, the medial surface of liner base portion 121 be equipped at intervals with it is multiple to 122 direction of liner lip extend Fin 1212.Preferably, if there are four fin 1212, four fins 1212 are used to guide the rifle mouth of refueling nozzle.

As shown in figure 3, distance (i.e. the depth of mounting groove 1120) etc. of the upper surface of boss 1121 apart from upper opening 11A In the thickness of interconnecting piece 1211`, in this way when sealing valve liner 12 is inserted into sealing valve shell 11, the upper surface of sealing valve liner 12 It is concordant with the sealing upper surface of valve shell 11.

With continued reference to Fig. 2, the lower end of sealing ring 13 is abutted with annular convex platform 11B1, and upper end is abutted with liner base portion 121, i.e., Sealing ring 13 is fastened between annular convex platform 11B1 and liner base portion 121.

Preferably, sealing valve shell 11 is equipped with annular groove in one end close to its upper opening 11A, is embedded in the annular groove There is O-ring seal, to further enhance the sealing effect of the mechanical sealing valve.

Preferably, the lateral surface of first surface 111 is additionally provided with two fin 111` axially extended, and two fins The two sides of venthole 113 are arranged in 111`.Increase the intensity that fin 111` further increases mechanical sealing valve 1.

The mounting means of the mechanical sealing valve 1 is, first by the alignment sealing valve shell 11 of labial surface 1221 of liner lip 122 The first circumferential surface 111, by sealing valve liner 12 be pushed into sealing valve shell 11 in, then by screw wear interconnecting piece 1222` lead to Hole and the screw hole for going deep into boss 1121 are completed to install.

Referring to Fig. 7, oil filling pipe 2 is from top to bottom successively arranged upper section 21, middle section 22 and lower section 23, and upper section 21 is for partially holding Receive tooth circle 3, middle section 22 is for accommodating mechanical sealing valve 1, wherein the top ring of upper section 21 sets skirt 211, and middle section 22 is used for It is arranged mechanical sealing valve 1, the inner wall in middle section 22 is equipped with a convex block 221, and the convex block 221 cooperates with guide groove 1120, For guiding the mechanical alignment of sealing valve 1 and the circumferentially opposed movement of limit mechanical formula sealing valve 1 and limit mechanical formula sealing valve 1 Continue slide downward.

It should be noted that the outer diameter of mistake proofing portion 11C is slightly less than the internal diameter in middle section 22.Mechanical sealing valve can only court in this way Fixed-direction is inserted into tight oil filling pipe 2.

Further, the distance of the lower section 23 of oil filling pipe 2 can carry out the adjustment of length according to the actual situation, for example, working as liquid When face height is lower than the end of lower section 23, then lower section 23, which can re-start design, makes it have longer length, with deeply To liquid level.

Further, skirt 211 is equipped with limiting slot 2111, it is preferable that limiting slot 2111 there are two setting.

Further, two limiting slots are symmetrical about the central axis of oil filling pipe 2.

Such as Fig. 8~9, tooth circle 3 includes insertion section 31 and buckling parts 32, the lower end of the insertion section and the sealing valve shell Upper opening between ring set a rubber pad (not shown), the internal diameter of insertion section 31 is identical as the internal diameter of upper section 21, insertion section 31 Inner peripheral surface be equipped with spiral burr 311, the upper end of insertion section 31, the inner peripheral surface of buckling parts 32 and insertion is arranged in buckling parts 32 31 outer peripheral surface of portion has spacing, and the spacing is not less than the thickness of oil filling pipe 2, and buckling parts 32 is equipped at intervals with multiple buckle teeth 321, institute Stating buckle teeth 321 can be fastened and connected with the upper limb of upper end 21, between the upper end of the inner peripheral surface of buckling parts 32 and the upper end of insertion section 31 Equipped with the limit fin 322 cooperated with the limiting slot.

Preferably, if there are two limiting slots 2111 of different size, while two limit convexes of different size being correspondingly provided with Rib 322.The installation direction of tooth circle is intuitively defined in this way, and the cooperation of limiting slot and limit fin prevents tooth circle simultaneously Circumferentially opposed movement between oil filling pipe.

Further, the length of insertion section 31 limits in this way: when buckling parts 32 fastens upper end 21, insertion section 31 Lower end abuts the upper end of sealing valve shell 11.

In conjunction with Figure 10, the installation diagram of mechanical sealing valve assembly, the buckle teeth 321 and oil filling pipe 2 of the buckling parts 32 of tooth circle 3 The upper limb of upper section 21 be fastened and connected, the lower end of insertion section 31 is connected to the upper end of sealing valve shell 11, sealing valve shell 11 Lower end is connected to the upper end of sealing ring 13, meanwhile, the convex block 221 and guide groove 112`'s of sealing valve shell 11 in middle section 22 is most upper End cooperates, meanwhile, sealing valve liner 12 is located in sealing valve shell 11, and boss 1121 is mutually abutted with bearing surface 1222, Venthole 113 is opposed with notch 1210.

Therefore, the advantage of the utility model is: mechanical sealing valve preferably limits in oil filling pipe, and axis will not occur To the relative motion with radial direction, meanwhile, mechanical guide groove is set and is conveniently inserted into fixed direction into shell, buckling parts Inner peripheral surface equipped with the limit fin cooperated with the limiting slot, it is therefore prevented that the circumferentially opposed fortune between tooth circle and oil filling pipe It is dynamic；After having welded the fuel tank assembly pyrolytic coating of oil filling pipe, then mechanical sealing valve is installed again, passes through the tooth circle of redesign Instead of the function (fixed fuel door, refueling nozzle are hung arms) of traditional tooth circle, and can be fixed with oil filling pipe by buckle structure.

The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, all in the utility model Spirit and principle within, any modification, equivalent replacement, improvement and so on should be included in the protection model of the utility model Within enclosing.

Claims (10)

1. a kind of mechanical sealing valve assembly, including mechanical sealing valve, oil filling pipe and Ya Quan, it is characterised in that:

The mechanical sealing valve includes sealing valve shell, sealing valve liner, sealing ring and the pressure relief device of coaxial arrangement, In,

The sealing valve shell is formed with circular upper opening and under shed, and both the upper opening and under shed eccentric setting make The sealing valve shell has first surface and the second curved surface, and the medial surface of the first surface and the second curved surface is collectively formed slotting Entering the channel of fuel oil gun mouth, opens up venthole on the first surface, the venthole is equipped with the pressure relief device, and described the Mounting groove is opened up on the inside of the upper end of two curved surfaces, the outer peripheral surface of second curved surface is equipped with guide groove, the outer wall edge of the under shed It extends radially outwardly to form the mistake proofing portion of annular, the medial surface of the second curved surface described in the lower end edge of the mounting groove is equipped with to described Seal center two boss outstanding of valve shell, the radially inwardly extending formation annular convex platform of the lower edge of the under shed, institute Sealing ring is stated to be arranged on the annular convex platform；

The lower end of the sealing valve liner is liner base portion, and upper end is liner lip, wherein the lower end of the liner base portion is at one A notch corresponding with the venthole, the upper edge part of the liner lip are removably fastened on the mounting groove In；

The oil filling pipe is from top to bottom successively arranged upper section, middle section and lower section, and the upper section is used to accommodate tooth circle, the upper section Upper end is equipped with limiting slot, and the middle section is equipped with and the guiding for accommodating the mechanical sealing valve, the inner wall in the middle section Slot mutual cooperation convex block；

The tooth circle includes insertion section and buckling parts, and the internal diameter of the insertion section is identical as the internal diameter of the upper section, the insertion Ring sets a rubber pad between the lower end in portion and the upper opening of the sealing valve shell, and the inner peripheral surface of the insertion section is equipped with spiral The upper end of the insertion section is arranged in burr, the buckling parts, and the inner peripheral surface of the buckling parts is deposited with the insertion section outer peripheral surface In spacing, the buckling parts is equipped at intervals at least one buckle teeth, the upper end of the inner peripheral surface of the buckling parts and the insertion section The limit fin cooperated with the limiting slot is equipped between upper end.

2. a kind of mechanical sealing valve assembly according to claim 1, which is characterized in that the liner lip has labial surface With two bearing surfaces.

3. a kind of mechanical sealing valve assembly according to claim 2, which is characterized in that the upper surface of the boss is equipped with Screw hole, the upper end-face edge of two bearing surfaces extend radially outward to form interconnecting piece respectively, and the interconnecting piece is fastened on institute It states in mounting groove, the interconnecting piece is threadedly coupled with the boss.

4. a kind of mechanical sealing valve assembly according to claim 2, which is characterized in that the bearing surface is from the top down Extend and be smoothly connected to liner base portion and the class triangle longitudal section that is formed, the spacing between two boss is equal to two Spacing between the bearing surface.

5. a kind of mechanical sealing valve assembly according to claim 2, which is characterized in that outside the outer peripheral surface of the labial surface The minimum value of diameter is not less than the outer diameter of liner base portion.

6. a kind of mechanical sealing valve assembly according to claim 1, which is characterized in that the venthole includes centre bore With the side hole for being arranged at intervals on centre bore periphery.

7. a kind of mechanical sealing valve assembly according to claim 6, which is characterized in that the pressure relief device includes compression bar And diaphragm, the compression bar wear the centre bore, the diaphragm is installed on compression bar, and the diaphragm can block and open institute It states and switches in the state of side hole.

8. a kind of mechanical sealing valve assembly according to claim 1, which is characterized in that the upper end of the sealing valve liner Posterior edges it is identical as the sealing posterior edges radian of valve shell.

9. a kind of mechanical sealing valve assembly according to claim 1, which is characterized in that there are two the limiting slot is total, Two limiting slots are symmetrical about the central axis of the oil filling pipe.

10. a kind of mechanical sealing valve assembly according to claim 9, which is characterized in that the width of two limiting slots Degree is different, and the tooth circle sets that there are two the limit fins of different size.