CN205173498U - Self sealss formula Y type stop valve - Google Patents

Abstract

The utility model discloses a self-sealing Y-type stop valve. The Y-type stop valve comprises an upper valve body, a lower valve body, and a valve seat arranged between the upper valve body and the lower valve body. A sealing ring is provided between the contact surfaces of the valve body, and a valve stem guide hole is provided in the middle of the valve seat; the valve disc, the valve disc is arranged in the cavity of the lower valve body, and is located below the valve seat, and one end of the valve disc Through the guide hole of the valve stem, it extends into the cavity of the upper valve body; the valve stem, one end of the valve stem is connected to the valve disc, and the two are fixed by a connecting sleeve; the stuffing box, the stuffing box is set on the valve stem The upper part, above the stuffing box, is provided with a packing gland; the bracket, which is used to compress the stuffing box, is connected to the upper valve body by bolts; the cylinder, which is connected to the upper end of the valve stem, is used to drive the valve The rod turns. The utility model has the advantages of simple structure, good sealing performance, long service life, small working stroke and short opening and closing time.

Description

A self-sealing Y-type globe valve

technical field

The utility model relates to a stop valve, in particular to a self-sealing Y-type stop valve.

Background technique

RQJ41F-16P self-sealing Y-type globe valve is suitable for cutting off or connecting media in pipelines in various working conditions such as petroleum, chemical, pharmaceutical, chemical fertilizer, and electric power industries. Since the globe valve products in the past all used one-piece valve body, the seal was completely sealed by the top force of the valve stem. The outer diameter of the solid valve stem was required to be relatively large, and the torque force was relatively heavy, especially when the working pressure was relatively high. The relative seal is not very reliable or even leaks, and the relative life of use is relatively short.

The valve disc of the existing stop valve is above the valve seat. When the pressure at the inlet increases, the valve disc will move away from the valve seat under the thrust of the medium, and it can only be sealed completely by the jacking force of the valve stem.

Utility model content

The technical problem to be solved by the utility model is to provide a self-sealing Y-shaped stop valve with good sealing effect, lighter torque force and unlimited installation position.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A self-sealing Y-type stop valve, said Y-type stop valve comprising:

upper valve body;

lower valve body;

The valve seat is arranged between the upper valve body and the lower valve body, a sealing ring is provided between the contact surface of the valve seat and the upper and lower valve bodies, and a valve stem guide hole is provided in the middle of the valve seat;

The valve clack is arranged in the cavity of the lower valve body and is located below the valve seat, and one end of the valve clack extends into the cavity of the upper valve body through the guide hole of the valve stem;

A valve stem, one end of the valve stem is connected to the valve disc, and the two are fixed by a connecting sleeve;

A stuffing box, the stuffing box is arranged on the upper part of the valve stem, and a stuffing gland is arranged above the stuffing box;

A bracket, which is used to compress the stuffing box, and is connected to the upper valve body by bolts;

The air cylinder is connected with the upper end of the valve stem and is used to drive the valve stem to rotate.

In one embodiment of the present utility model, the Y-shaped stop valve is also provided with a travel switch.

In one embodiment of the present utility model, the valve disc is provided with a guide hole.

In one embodiment of the present utility model, the support is a column support.

Through above-mentioned technical scheme, the beneficial effect of the utility model is:

1. Compact and simple structure, beautiful appearance, convenient manufacture and maintenance;

2. The working stroke is small and the opening and closing time is short;

3. Good sealing performance, no friction between sealing surfaces, and long service life;

4. Good sealing effect, erosion and corrosion resistance;

5. The installation position is not limited, and the applicable temperature is high.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the utility model;

The corresponding part names indicated by numbers and letters in the figure:

10. Upper valve body 20, lower valve body 30, valve seat 31, sealing ring 32, valve stem guide hole 40, valve disc 50, valve stem 60, connecting sleeve 70, stuffing box 80, packing gland 90, bracket 100, Bolt 110, cylinder 120, travel switch.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

Referring to Fig. 1, the utility model discloses a self-sealing Y-type stop valve. The Y-type stop valve includes an upper valve body 10, a lower valve body 20, and a valve body arranged between the upper valve body 10 and the lower valve body 20. Valve seat 30, valve disc 40, valve stem 50, stuffing box 70, bracket 90 and cylinder 110; a sealing ring 31 is provided between the contact surface of the valve seat 30 and the upper and lower valve bodies, and a valve seat is provided in the middle of the valve seat 30. Rod guide hole 32; valve flap 40 is arranged in the cavity of lower valve body 20, and is positioned at the below of valve seat 30, and one end of valve flap 40 stretches into the cavity of upper valve body 10 through valve stem guide hole 32; Valve stem One end of 50 is connected to the disc 40, and the two are fixed by the connecting sleeve 60; the stuffing box 70 is arranged on the upper part of the valve stem, and the stuffing gland 80 is arranged above the stuffing box 70; the bracket 90 is used to compress the stuffing box 70, It is connected with the upper valve body 10 by bolts 100; the cylinder 110 is connected with the upper end of the valve stem to drive the valve stem to rotate.

The valve body of the utility model adopts a split structure. The valve seat is between the two valve bodies. There is a sealing ring 31 between the valve body and the valve seat for sealing. The valve disc 40 is sealed under the valve seat 30. When the valve stem 50 drives the valve disc 40 When it moves upward in a straight line, the valve closes; when it closes, the disc presses harder against the valve seat under the thrust of the medium at the inlet. When the working pressure increases, the higher the pressure, the better the sealing effect, so there is no need to worry about Leakage due to increased pipeline pressure.

The valve stem guide hole 32 in the middle of the valve seat 30 of the utility model makes the valve stem 50 and the valve disc 40 not deviate from the sealing surface at any position and angle, so the sealing effect is better and more reliable; It can be installed horizontally, vertically or at any angle of inclination without worrying about seal leakage.

The Y-type stop valve is also equipped with a travel switch 120, which can remotely control the opening and closing of the valve through the power signal, greatly reducing labor intensity, improving production efficiency, and increasing service life; the valve has the advantages of existing stop valves. In addition, it also has the advantages of better sealing effect, lighter torque force, and unlimited installation position.

The valve clack of the utility model is sealed from bottom to top, with reliable sealing and sensitive action. The support adopts off-column support, which is convenient for installing travel switches, easy to realize automatic control, greatly reduces labor intensity, and can adapt to work in harsh environments.

The valve clack 40 of the utility model is provided with a guide hole, the setting of the guide hole makes the valve clack always within the sealing effect of the valve seat, and no leakage will occur because the valve clack deviates from the center of the valve seat.

Due to the small friction force between the sealing surfaces during the opening and closing process, the utility model is relatively durable, the opening height is small, easy to manufacture and convenient to maintain, and is not only suitable for medium and low pressure, but also suitable for high pressure.

When the utility model is working, the cylinder drives the valve stem and the valve clack to move up and down in a straight line. When the valve clack lifts up, the valve is closed; otherwise, the valve is opened.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A self-sealing Y-type stop valve, characterized in that, said Y-type stop valve comprises: upper valve body; lower valve body; The valve seat is arranged between the upper valve body and the lower valve body, a sealing ring is provided between the contact surface of the valve seat and the upper and lower valve bodies, and a valve stem guide hole is provided in the middle of the valve seat; The valve clack is arranged in the cavity of the lower valve body and is located below the valve seat, and one end of the valve clack extends into the cavity of the upper valve body through the guide hole of the valve stem; A valve stem, one end of the valve stem is connected to the valve disc, and the two are fixed by a connecting sleeve; A stuffing box, the stuffing box is arranged on the upper part of the valve stem, and a stuffing gland is arranged above the stuffing box; A bracket, which is used to compress the stuffing box, and is connected to the upper valve body by bolts; The air cylinder is connected with the upper end of the valve stem and is used to drive the valve stem to rotate. 2. A self-sealing Y-type stop valve according to claim 1, characterized in that the Y-type stop valve is also provided with a travel switch. 3. A self-sealing Y-shaped globe valve according to claim 1, wherein a guide hole is provided on the valve flap. 4. A self-sealing Y-shaped globe valve according to claim 1, wherein the bracket is a column bracket.