CN215257836U

CN215257836U - Composite drum-shaped sealing ring with rubber elastomer wrapped by double layers of polyurethane

Info

Publication number: CN215257836U
Application number: CN202121762492.XU
Authority: CN
Inventors: 毛永; 刘建文; 郭凯; 李玉萍
Original assignee: Xishan Coal Power Group Co ltd Baijiazhuang Mine Diversified Operation Branch
Current assignee: Xishan Coal Power Group Co ltd Baijiazhuang Mine Diversified Operation Branch
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-21
Anticipated expiration: 2031-07-30

Abstract

The utility model discloses a combined type cydariform sealing washer of double-deck polyurethane parcel rubber elastomer, concretely relates to sealing washer technical field, including rubber elastic component, rubber elastic component cross-section sets up to wavy cydariform, the inside and outside wall of rubber elastic component all is equipped with the wear-resisting layer of polyurethane, wear-resisting layer top of polyurethane and bottom all are equipped with polyformaldehyde Z shape retaining ring, and one of them polyformaldehyde Z shape retaining ring top, another polyformaldehyde Z shape retaining ring bottom all are equipped with polyformaldehyde L shape guide ring. The utility model discloses structure combined seal formula as an organic whole, simple installation, disposable installation are put into power height, and polyformaldehyde L shape guide ring has the effect of the stable plunger of direction, is equipped with polyformaldehyde Z shape retaining ring and can bear bigger operating pressure, in time effectual wearing and tearing to the wear-resisting layer of polyurethane compensate, improves production efficiency greatly in the production, reduces the material waste and reduce economic cost, can provide a reliable effectual sealed product for stand, the jack of mining hydraulic support.

Description

Composite drum-shaped sealing ring with rubber elastomer wrapped by double layers of polyurethane

Technical Field

The utility model relates to a do reciprocating motion in stand, jack of mining hydraulic support, can bear bigger pressure, carry out effective compensation and the combined type drum-shaped sealing washer of the double-deck polyurethane parcel rubber elastomer of being convenient for installation to wearing and tearing.

Background

At present, the composite drum-shaped sealing ring known in the industry is split, and the structure of the composite drum-shaped sealing ring is formed by assembling a polyurethane wear-resistant layer, a rubber elastic body and two polyformaldehyde check rings or polyformaldehyde L-shaped guide rings, and the figure is shown in figure 1. This construction has a good sealing performance, but also has a number of problems: firstly, in the oil cylinder assembly process, due to the fact that interference magnitude is reserved on a main sealing surface, the polyurethane wear-resistant layer can be separated from the rubber elastic body at two ends under the extrusion of the same cylinder wall and is opened outwards, when a plunger is pushed into a cylinder body, the polyurethane wear-resistant layer is easy to turn over and is brought into a gap between the plunger and the cylinder wall to be extruded and damaged; secondly, because the hardness of the rubber elastomer is low, the rubber elastomer can generate irregular creep deformation phenomenon in long-term high-pressure reciprocating motion, and the abrasion to the polyurethane wear-resistant layer cannot be effectively compensated; thirdly, the thickness of the polyformaldehyde check ring is not enough, the Shore hardness of the rubber elastomer is low, and the rubber elastomer cannot work at high pressure for a long time; and fourthly, the processing and manufacturing are respectively formed by carrying out internal and external mechanical turning on the polyurethane pipe fitting and the rubber elastic body pipe fitting, the material waste is serious, and the economic cost is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of sealed installation destroyed, pressure-bearing problem, wearing and tearing compensation problem, it is extravagant to reduce the material, reduces economic cost, the utility model provides a double-deck polyurethane parcel rubber elastomer's combined type cydariform sealing washer.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a combined type cydariform sealing washer of double-deck polyurethane parcel rubber elastomer, includes rubber elastic component, rubber elastic component cross-section sets up to the wavy cydariform, the rubber elastic component inside and outside wall all is equipped with the wear-resisting layer of polyurethane, wear-resisting layer top of polyurethane and bottom all are equipped with polyformaldehyde Z shape retaining ring, and one of them polyformaldehyde Z shape retaining ring top, another polyformaldehyde Z shape retaining ring bottom all are equipped with polyformaldehyde L shape guide ring.

In a preferred embodiment, the polyurethane wear-resistant layer is fixedly connected with both the inner wall and the outer wall of the rubber elastic element.

In a preferred embodiment, the polyoxymethylene Z-shaped retainer ring is movably connected to the polyurethane wear layer.

In a preferred embodiment, the polyoxymethylene L-shaped guide ring and the polyoxymethylene Z-shaped retainer ring are movably connected.

In a preferred embodiment, the two polyoxymethylene Z-shaped securing rings are arranged symmetrically to one another with respect to the polyurethane wear layer and the two polyoxymethylene L-shaped guide rings are arranged symmetrically to one another with respect to the polyurethane wear layer.

The utility model discloses a technological effect and advantage:

the utility model discloses this structure is compound by double-deck polyurethane wear-resistant layer parcel rubber elastomer integral type, behind seal machining center precision finishing, it forms to be equipped with two polyformaldehyde Z shape retaining rings and two polyformaldehyde L shape guide ring assemblies again, this structure composite seal formula as an organic whole, simple installation, disposable installation is installed power height, polyformaldehyde L shape guide ring has the effect of the stable plunger of direction, it can bear bigger operating pressure to be equipped with polyformaldehyde Z shape retaining ring, timely effectual wearing and tearing to the polyurethane wear-resistant layer compensate, improve production efficiency greatly in the production, reduce material waste and reduce economic cost, can be for the stand of mining hydraulic support, the jack provides a reliable effectual sealed product.

Drawings

Fig. 1 is a sectional view of a split composite drum-shaped seal ring.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a sectional view of the rubber elastic member of the present invention.

Fig. 4 is a cross-sectional view of the rubber elastic body wrapped by the double-layer polyurethane wear-resistant layer of the present invention.

FIG. 5 is a schematic view of the preparation of the rubber elastomer of the present invention.

Fig. 6 is a structural diagram of the present invention.

The reference signs are: 1. a rubber elastic member; 2. a polyurethane wear layer; 3. a polyformaldehyde Z-shaped check ring; 4. polyformaldehyde L shape guide ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached fig. 1-6 of the specification, the composite drum-shaped sealing ring of the embodiment, which is a double-layer polyurethane-coated rubber elastomer, comprises a rubber elastic part 1, the section of the rubber elastic part 1 is in a wave-shaped drum shape, the rubber elastic part 1 is in the shape of the wave-shaped drum shape and has good compression resilience, therefore, the rubber elastic part can bear larger working pressure, the inner wall and the outer wall of the rubber elastic part 1 are both provided with polyurethane wear-resistant layers 2, the top and the bottom of each polyurethane wear-resistant layer 2 are both provided with polyformaldehyde Z-shaped check rings 3, a polyformaldehyde L-shaped guide ring 4 is arranged at the top of one polyformaldehyde Z-shaped check ring 3 and the bottom of the other polyformaldehyde Z-shaped check ring 3, the polyformaldehyde L-shaped guide ring 4 has the function of guiding and stabilizing a plunger, and the polyformaldehyde Z-shaped check ring 3 can bear larger working pressure and timely and effectively compensate abrasion of a polyurethane layer.

Polyurethane wear-resistant layer 2 and the equal fixed connection of rubber elastic component 1 inside and outside wall, the wearability of greatly increased rubber elastic component 1, polyformaldehyde Z shape retaining ring 3 and polyurethane wear-resistant layer 2 swing joint, 3 swing joint of polyformaldehyde L shape guide ring 4 and polyformaldehyde Z shape retaining ring, two polyformaldehyde Z shape retaining rings 3 set up about the mutual symmetry of polyurethane wear-resistant layer 2, and two polyformaldehyde L shape guide rings 4 set up about the mutual symmetry of polyurethane wear-resistant layer 2, further increase the use strength and the life of whole sealing washer.

The implementation scenario is specifically as follows: when in use, a special mould (as figure 5) is firstly adopted to manufacture a 'wave drum-shaped' rubber elastic part 1 (as figure 3) with frosted inner and outer walls, the rubber elastic part 1 is in a 'wave drum shape' with good compression resilience, the surface is frosted, the surface roughness is large, the rubber elastic part can be conveniently bonded with a polyurethane wear-resistant layer 2, acetone or industrial methanol is used for cleaning the inner and outer surfaces of the rubber elastic part 1, a special polyurethane adhesive is uniformly coated on the surface of the rubber elastic part, then the rubber elastic part 1 coated with the adhesive is put into a prefabricated casting mould for casting and vulcanizing polyurethane on the inner and outer surfaces, thereby manufacturing an integrated composite pipe fitting (as figure 4) with the rubber elastic part 1 wrapped by double-layer polyurethane, the formed rubber elastic part 1 does not need to be turned, the material waste is reduced, the yield and the production efficiency are improved, great saving manufacturing cost, after the post cure, the no mould machining center of rethread sealing carries out lathe work, it forms to be equipped with two polyformaldehyde Z shape retaining rings 3 and two polyformaldehyde L shape guide rings 4 combinations again, construct into a new-type compound drum type sealing washer of integral type, (as figure 2 and figure 6), this compound sealed formula as an organic whole of structure, simple installation, disposable installation power height, polyformaldehyde L shape guide ring 4 has the effect of the stable plunger of direction, it can bear bigger operating pressure to be equipped with polyformaldehyde Z shape retaining ring 3, in time effectual wearing and tearing to polyurethane wear-resistant layer 2 compensate, improve production efficiency greatly in the production, reduce the material waste and reduce economic cost.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a double-deck polyurethane parcel rubber elastomer's combined type drum-shaped sealing washer, includes rubber elastic component (1), its characterized in that: the cross section of the rubber elastic part (1) is arranged to be wave-shaped, the inner wall and the outer wall of the rubber elastic part (1) are both provided with a polyurethane wear-resistant layer (2), the top and the bottom of the polyurethane wear-resistant layer (2) are both provided with a polyformaldehyde Z-shaped check ring (3), and the top of one polyformaldehyde Z-shaped check ring (3) and the bottom of the other polyformaldehyde Z-shaped check ring (3) are both provided with a polyformaldehyde L-shaped guide ring (4).

2. The composite drum-shaped sealing ring of claim 1, wherein the two layers of polyurethane-coated rubber elastomers are: the polyurethane wear-resistant layer (2) is fixedly connected with the inner wall and the outer wall of the rubber elastic piece (1).

3. The composite drum-shaped sealing ring of claim 1, wherein the two layers of polyurethane-coated rubber elastomers are: the polyformaldehyde Z-shaped check ring (3) is movably connected with the polyurethane wear-resistant layer (2).

4. The composite drum-shaped sealing ring of claim 1, wherein the two layers of polyurethane-coated rubber elastomers are: the polyformaldehyde L-shaped guide ring (4) is movably connected with the polyformaldehyde Z-shaped retainer ring (3).

5. The composite drum-shaped sealing ring of claim 1, wherein the two layers of polyurethane-coated rubber elastomers are: the two polyformaldehyde Z-shaped check rings (3) are symmetrically arranged relative to the polyurethane wear-resistant layer (2), and the two polyformaldehyde L-shaped guide rings (4) are symmetrically arranged relative to the polyurethane wear-resistant layer (2).