CN210014086U

CN210014086U - Inverted sealing structure of stop valve

Info

Publication number: CN210014086U
Application number: CN201920630217.9U
Authority: CN
Inventors: 陆应海; 何永涛; 李怀英
Original assignee: Valve Co Ltd Hangzhou Fu Still
Current assignee: Valve Co Ltd Hangzhou Fu Still
Priority date: 2019-05-06
Filing date: 2019-05-06
Publication date: 2020-02-04
Anticipated expiration: 2029-05-06

Abstract

The utility model discloses a sealing structure that falls of stop valve, including valve body, case, valve rod, support, the sealing mechanism that falls is including falling sealed, the sealed clamp plate that falls, packing gasket, filler, the upper end of valve body is equipped with the support, the upper end of support is equipped with the valve rod cover, be equipped with the valve rod hole in the valve body, the valve rod cover is passed to the upper end of valve rod, and the lower extreme sets up in the valve rod downthehole, the valve rod hole includes first hole section, second hole section and the third hole section that gradually becomes big by lower supreme internal diameter. Through the setting of the inverted sealing mechanism, the problem of separation of the valve rod and the filler is effectively solved, the use safety of the valve is improved, the service life of the valve is prolonged, the production and processing difficulty is reduced, and the cost is reduced.

Description

Inverted sealing structure of stop valve

Technical Field

The utility model relates to a valve field specifically indicates a Y type stop valve's structure of falling seal.

Background

After the valves such as the Y-shaped stop valve are used for a long time or when the upper gland is detached, the situation that the valve rod and the packing are separated exists, potential safety hazards exist, and the service life of the valves is influenced. The traditional solution is to set up in the valve body and prevent deviating from the step, prevents that the valve rod from deviating from, sets up the clamp plate in the valve body upper end, prevents that the filler from deviating from for the consumptive material improves, and the operation degree of difficulty is big, and the cost increases, and especially the valve setting of the less valve of bore or valve body valve gap integral type prevents deviating from the step degree of difficulty bigger.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stop valve's structure of falling seal through the setting of falling sealing mechanism, has effectively solved the problem of deviating from of valve rod, filler, has improved the safety in utilization of valve, has prolonged the life of valve, has reduced the production and processing degree of difficulty, the cost is reduced.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a reversing seal structure of stop valve, includes valve body, case, valve rod, support, reversing seal mechanism is including reversing seal, reversing seal clamp plate, packing gasket, filler, the upper end of valve body is equipped with the support, the upper end of support is equipped with the valve rod cover, be equipped with the valve rod hole in the valve body, the valve rod cover is passed to the upper end of valve rod, and the lower extreme sets up in the valve rod hole, the valve rod hole includes first hole section, second hole section and the third hole section that gradually becomes big by lower supreme internal diameter, be equipped with the case in the first hole section, the junction of first hole section and second hole section is equipped with the reversing seal, be equipped with threaded connection's reversing seal clamp plate in the second hole section, be equipped with packing gasket, filler in the third hole section.

Preferably, the upper end of the inverted sealing pressure plate is provided with an expanding end corresponding to the inner diameter of the third hole section, and the expanding end is provided with a fixing hole.

Preferably, the support is in threaded connection with the valve body.

The utility model has the advantages that: through the setting of the inverted sealing mechanism, the problem of separation of the valve rod and the filler is effectively solved, the use safety of the valve is improved, the service life of the valve is prolonged, the production and processing difficulty is reduced, and the cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the valve body.

Fig. 3 is a cross-sectional view of the inverted sealing platen.

Fig. 4 is a top view of the inverted seal platen.

1. A valve body; 2. a valve core; 3. a valve stem; 4. a support; 41. a valve stem sleeve; 5. pouring and sealing; 6. reversing the sealing pressure plate; 61. a diameter expanding end; 62. a fixing hole; 7. packing gasket; 8. a filler; 9. a valve stem bore; 91. a first bore section; 92. a second bore section; 93. a third bore section.

Detailed Description

The reverse sealing structure of the stop valve according to the present invention will be further described with reference to the accompanying drawings, and the following embodiments are exemplary and not intended to limit the technical scope.

Referring to fig. 1 to 4, a reversing seal structure of a stop valve, including a valve body 1, a valve core 2, a valve rod 3, a support 4, a reversing seal mechanism includes a reversing seal 5, a reversing seal pressing plate 6, a packing gasket 7, and a packing 8, an upper end of the valve body 1 is provided with the support 4, an upper end of the support 4 is provided with a valve rod sleeve 41, a valve rod hole 9 is arranged in the valve body 1, the upper end of the valve rod 3 passes through the valve rod sleeve 41, a lower end is arranged in the valve rod hole 9, the valve rod hole 9 includes a first hole section 91 with gradually increased inner diameter from bottom to top, a second hole section 92 and a third hole section 93, a valve core 2 is arranged in the first hole section 91, a junction of the first hole section 91 and the second hole section 92 is provided with the reversing seal 5, a reversing seal pressing plate 6 connected by a thread is arranged in the second hole section 92, a packing gasket.

As a modification, the upper end of the reverse sealing pressure plate 6 is provided with an expanding end 61 corresponding to the inner diameter of the third hole section, and the expanding end 61 is provided with a fixing hole 62. The arrangement of the diameter expanding end 61 is convenient for the packing 8 to better realize sealing; through the setting of fixed orifices 62, be convenient for fall the tightness degree of seal pressing plate 6 and third hole section 93 threaded connection and adjust, improve assembly efficiency.

As a modification, the bracket 4 is screwed with the valve body 1. The support 4 is convenient to mount and dismount, and the assembly efficiency is improved.

When the product is assembled, install case 2 in 3 lower extremes of valve rod earlier, valve rod 3 inserts valve rod hole 9 for 2 butt disk seats of case will fall sealed 5 and fall sealed clamp plate 6 and overlap in proper order on valve rod 3 and will fall sealed clamp plate 6 and screw up, lock the position of falling sealed 5, then place packing gasket 7 and filler 8 in third hole section 93, be connected fixedly with support 4 and valve body 1. Through the threaded connection mode of the inverted seal pressing plate 6 and the second hole section 92, the installation efficiency of the inverted seal 5 is effectively improved, the installation difficulty is reduced, and the use safety of the whole inverted seal mechanism is improved; the packing gasket 7 and the packing 8 are arranged, so that the sealing performance of the valve rod and the valve body is ensured, the leakage amount is reduced, and the packing gasket 7 and the packing 8 are more simply and safely assembled and disassembled through the arrangement of the inverted sealing pressure plate 6; the support 4 realizes the function of a packing gland, the valve rod sleeve 41 has the guiding function, the left and right movement of the valve rod 3 is avoided, the performance of the valve is improved, and the service life of the valve is prolonged.

The scope of the present invention is not limited to the above embodiments and their variations. The present invention is not limited to the above embodiments, and other modifications and substitutions may be made by those skilled in the art.

Claims

1. The utility model provides a reversing seal structure of stop valve which characterized in that: the valve comprises a valve body (1), a valve core (2), a valve rod (3), a support (4) and a reverse sealing mechanism, wherein the reverse sealing mechanism comprises a reverse seal (5), a reverse sealing pressing plate (6), a packing gasket (7) and a packing (8), the support (4) is arranged at the upper end of the valve body (1), a valve rod sleeve (41) is arranged at the upper end of the support (4), a valve rod hole (9) is formed in the valve body (1), the upper end of the valve rod (3) penetrates through the valve rod sleeve (41), the lower end of the valve rod hole is arranged in the valve rod hole (9), the valve rod hole (9) comprises a first hole section (91), a second hole section (92) and a third hole section (93), the inner diameter of the first hole section (91) is gradually increased from bottom to top, the valve core (2) is arranged in the first hole section (91), the reverse seal (5) is arranged at the joint of the first hole section (91) and the second hole section (92), the reverse sealing pressing plate (, and a packing gasket (7) and a packing (8) are arranged in the third hole section (93).

2. The inverted seal structure of a shut-off valve according to claim 1, wherein: the upper end of the reverse sealing pressure plate (6) is provided with an expansion end (61) corresponding to the inner diameter of the third hole section, and the expansion end (61) is provided with a fixing hole (62).

3. The inverted seal structure of a shut-off valve according to claim 1, wherein: the support (4) is in threaded connection with the valve body (1).