CN215334782U - Regulating valve packing sealing structure - Google Patents

Abstract

The utility model belongs to the technical field of packing sealing structures, and particularly relates to a packing sealing structure of an adjusting valve, which comprises a valve body, wherein a valve seat is fixedly arranged at the upper end of the valve body, a valve rod is longitudinally arranged inside the valve seat, an annular cavity is formed in the position, in which the inside of the valve seat is in contact with the valve rod, an annular ring is arranged inside the annular cavity and outside the valve rod, rubber sealing layers are arranged at two ends of the annular ring, graphite packing layers are arranged at two ends of each of the two rubber sealing layers, polytetrafluoroethylene packing layers are arranged at two ends of each of the two graphite packing layers, and synthetic fiber sealing layers are arranged at two ends of each of the two polytetrafluoroethylene packing layers, so that the sealing property between the valve rod and the valve seat is ensured efficiently, and the phenomenon of water seepage between the valve seat and the valve rod after the valve seat is used for a period of time is prevented, and the use of the adjusting valve is prevented from being influenced.

Description

Regulating valve packing sealing structure

Technical Field

The utility model relates to the technical field of packing seal structures, in particular to a packing seal structure of a regulating valve.

Background

The low temperature control valve is a control valve used in low temperature and deep cooling, and a high quality sealing performance is excellently ensured at a joint of a valve seat and a valve rod, so that a sealing structure needs to be arranged inside to ensure the sealing performance of the valve rod.

But the current seal structure seals the effect relatively poor, and after a period, the governing valve is when using, and the condition that the infiltration appears in valve rod and disk seat junction easily influences the use, consequently provides a governing valve packing structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a regulating valve packing sealing structure to solve the problem that the sealing performance of the sealing structure is poor and the phenomenon of water seepage occurs after a valve rod and a valve seat are used for a period of time, so that the use is influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an adjusting valve packing structure, includes the valve body, the fixed disk seat that is provided with in upper end of valve body, the inside of disk seat vertically is provided with the valve rod, annular cavity has been seted up with valve rod contact position to the inside of disk seat, the inside of annular cavity and the outside that is located the valve rod are provided with annular ring, annular ring's both ends all are provided with the rubber sealing layer, two the both ends of rubber sealing layer all are provided with the graphite packing layer, two the both ends of graphite packing layer all are provided with the tetrafluoro packing layer, two the both ends of tetrafluoro packing layer all are provided with the synthetic fiber sealing layer.

Preferably, the upper end of the valve rod wall is provided with a connecting plate in a sliding manner, the two connecting plates are internally and respectively connected with a first bolt in a threaded manner, and the connecting plates are fixedly connected with the upper side wall of the valve seat through the first bolts.

Preferably, the outside of valve rod wall cup joints and is provided with the clamp plate, the lower lateral wall of clamp plate with the last lateral wall contact of synthetic fiber sealing layer, the fixed mounting panel that is provided with the symmetry of last lateral wall of clamp plate, two the mounting panel all through the second bolt with the lower lateral wall fixed connection of connecting plate.

Preferably, both ends of the valve body are fixedly provided with flange seats.

Preferably, the valve body and the valve seat are externally provided with epoxy zinc-rich primer.

Compared with the prior art, the utility model has the beneficial effects that:

through the common cooperation of annular ring, rubber sealing layer, graphite packing layer, tetrafluoro packing layer and synthetic fiber sealing layer, the leakproofness between valve rod and the disk seat is guaranteed to the high efficiency of being convenient for, prevents to use after a period, and the phenomenon that the infiltration appears between disk seat and the valve rod influences the use of governing valve.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the valve comprises a valve body 1, a valve seat 2, a valve rod 3, an annular ring 4, a rubber sealing layer 5, a graphite packing layer 6, a polytetrafluoroethylene packing layer 7, a synthetic fiber sealing layer 8, a connecting plate 9, a first bolt 10, a pressing plate 11, a mounting plate 12, a second bolt 13 and a flange seat 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an governing valve packing structure, including valve body 1, the fixed disk seat 2 that is provided with in upper end of valve body 1, disk seat 2's inside vertically is provided with valve rod 3, the annular cavity has been seted up with valve rod 3 contact position to disk seat 2's inside, the inside of annular cavity and the outside that is located valve rod 3 are provided with annular ring 4, the both ends of annular ring 4 all are provided with rubber seal layer 5, two rubber seal layer 5's both ends all are provided with graphite packing layer 6, the both ends of two graphite packing layers 6 all are provided with tetrafluoro packing layer 7, the both ends of two tetrafluoro packing layers 7 all are provided with synthetic fiber sealing layer 8, effectively guarantee the leakproofness between valve rod 3 and the disk seat 2, after preventing a period of use, the phenomenon of infiltration appears, influence the use of governing valve.

The upper end of the rod wall of the valve rod 3 is provided with a connecting plate 9 in a sliding manner, the inside of the two connecting plates 9 is connected with a first bolt 10 in a threaded manner, and the connecting plate 9 is fixedly connected with the upper side wall of the valve seat 2 through the first bolt 10.

The outside of 3 pole walls of valve rod cup joints and is provided with clamp plate 11, and the lower lateral wall of clamp plate 11 contacts with the last lateral wall of synthetic fiber sealing layer 8, and the fixed mounting panel 12 that is provided with the symmetry of the last lateral wall of clamp plate 11, and two mounting panels 12 all are through the lower lateral wall fixed connection of second bolt 13 with connecting plate 9.

Both ends of the valve body 1 are fixedly provided with flange seats 14.

And epoxy zinc-rich primer is arranged outside the valve body 1 and the valve seat 2.

The working principle is as follows: when using, at first with the valve seat 2 and valve body 1 between the assembly fastening, peg graft the inside at valve seat 2 with valve rod 3, with annular ring 4, rubber seal layer 5, graphite packing layer 6, tetrafluoro packing layer 7, synthetic fiber sealing layer 8 sets up respectively in the outside of valve rod 3 according to the order in the picture, after the installation is accomplished, it is fixed to pass through installation between second bolt 13 and connecting plate 9 with two mounting panels 12, overlap the outside of valve rod 3 with clamp plate 11 and press down the upper end at synthetic fiber sealing layer 8, the rethread two first bolts 10 with the installation between connecting plate 9 and the valve seat 2 fixed, guarantee the leakproofness between valve rod 3 and the valve seat 2, avoid appearing the phenomenon of infiltration.

While there have been shown and described the fundamental principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an governing valve packing structure, includes valve body (1), its characterized in that, the fixed disk seat (2) that is provided with in upper end of valve body (1), the inside of disk seat (2) vertically is provided with valve rod (3), the annular cavity has been seted up with valve rod (3) contact position to the inside of disk seat (2), the inside of annular cavity and the outside that is located valve rod (3) are provided with annular ring (4), the both ends of annular ring (4) all are provided with rubber seal layer (5), two the both ends of rubber seal layer (5) all are provided with graphite packing layer (6), two the both ends of graphite packing layer (6) all are provided with tetrafluoro packing layer (7), two the both ends of tetrafluoro packing layer (7) all are provided with synthetic fiber sealing layer (8).

2. A regulator valve packing structure according to claim 1, wherein: the upper end of the rod wall of the valve rod (3) is provided with a connecting plate (9) in a sliding mode, the two connecting plates (9) are connected with first bolts (10) in a threaded mode, and the connecting plates (9) are fixedly connected with the upper side wall of the valve seat (2) through the first bolts (10).

3. A regulator valve packing structure according to claim 2, wherein: valve rod (3) pole wall's outside cup joints and is provided with clamp plate (11), the lower lateral wall of clamp plate (11) with synthetic fiber sealing layer (8) go up the lateral wall contact, the last lateral wall of clamp plate (11) is fixed and is provided with mounting panel (12) of symmetry, two mounting panel (12) all through second bolt (13) with the lower lateral wall fixed connection of connecting plate (9).

4. A regulator valve packing structure according to claim 1, wherein: and flange seats (14) are fixedly arranged at two ends of the valve body (1).

5. A regulator valve packing structure according to claim 1, wherein: and epoxy zinc-rich primer is arranged outside the valve body (1) and the valve seat (2).

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