CN205207700U - Dark pole stop valve - Google Patents

Abstract

A concealed stem stop valve, the valve stem is driven to rotate by turning the hand wheel, the valve stem only rotates and does not move up and down, the valve stem is connected to the stem nut on the valve disc through trapezoidal threads, and the valve disc passes through the The guide ribs are fixed, and only move up and down without rotation. When the valve stem rotates, the trapezoidal thread drives the valve clack to move up and down. If the valve stem only rotates, the sealing reliability of the stuffing between the valve stem and the valve body is increased to ensure the sealing performance of the valve.

Description

A dark stem globe valve

technical field

The utility model relates to the field of valves, in particular to a dark stem stop valve.

Background technique

In the prior art, the conventional stop valve drives the rotation of the valve stem by turning the handwheel, thereby driving the valve flap to rotate and rise. The sealing performance of the packing between them is greatly reduced.

Contents of the invention

In order to solve the deficiencies of the prior art, the utility model provides a dark stem stop valve.

The technical solution adopted by the utility model is: a dark rod stop valve, including a valve body, a valve disc, a valve rod and a hand wheel, the valve body is provided with a valve cover, and the valve cover is fixed on the On the valve body, the valve disc is installed on the top of the valve stem, and a valve stem nut is also provided between the valve disc and the valve stem, and the valve disc is fixed on the valve disc through the valve stem nut. The valve stem nut is threadedly connected with the valve stem. The valve clack is provided with a vertical guide groove, and the valve body is provided with a vertical guide rib cooperating with the guide groove. The guide groove Limit and slide fit with the guide rib.

The valve stem nut is connected with the valve stem through trapezoidal thread.

The valve clack is provided with a mounting groove, and the valve stem nut is clamped in the mounting groove.

The bottom of the installation groove is also provided with a chute for the valve stem to slide up and down, and the top of the valve stem is slidingly fitted with the chute.

The top of the bonnet is also provided with a bracket, the bracket is provided with a stuffing cavity, the stuffing cavity is provided with a filler, the stuffing cavity is also provided with a gland, and the gland is also provided with a A pressing plate is provided, and the pressing plate is fixed on the support by bolts.

The beneficial effects of the utility model are: the utility model provides a closed stem stop valve, the rotation of the valve stem is driven by turning the hand wheel, the valve stem only rotates, does not move up and down, and the valve stem connects with the valve disc through the trapezoidal thread. The valve stem and nut are connected, and the valve disc is fixed by the guide rib on the valve body, and only moves up and down without rotation. When the valve stem rotates, the trapezoidal thread drives the valve disc to move up and down. If the valve stem only rotates, the sealing reliability of the stuffing between the valve stem and the valve body is increased to ensure the sealing performance of the valve.

Description of drawings

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

Fig. 2 is a schematic cross-sectional view of the utility model in K direction.

In the figure 1-valve body, 2-disc, 3-valve stem, 4-valve stem nut, 5-bonnet, 6-bracket, 7-press plate, 11-guide rib, 21-guide groove, 22-installation groove , 23-chute, 61-stuffing cavity, 62-pressure sleeve.

detailed description

The utility model is further described in conjunction with Fig. 1 and Fig. 2. A dark stem globe valve includes a valve body 1, a valve flap 2, a valve stem 3 and a hand wheel. The valve body 1 is provided with a valve cover 5, The valve cover 5 is fixed on the valve body 1 by bolts, the valve disc 2 is installed on the top of the valve stem 3, and a valve stem nut 4 is also arranged between the valve disc 2 and the valve stem 3. The valve clack 2 is fixed on the valve clack 2 by the valve stem nut 4, the valve clack 2 is provided with a mounting groove 22, and the valve stem nut 4 is clamped in the mounting groove 22. The bottom of the installation groove 22 is also provided with a slide groove 23 for the valve stem 3 to slide up and down, and the top of the valve stem 3 is slidingly fitted with the slide groove 23 . The trapezoidal screw connection between the valve stem nut 4 and the valve stem 3, the valve disc 2 is provided with a vertical guide groove 21, and the valve body 1 is provided with a vertical guide groove 21 matched with the guide groove 21. Straight guide ribs 11, the guide groove 21 and the guide ribs 11 limit and slide fit. The utility model drives the rotation of the valve stem through the hand wheel, the valve stem 3 only rotates, does not move up and down, the valve stem 3 is connected with the valve stem nut 4 on the valve disc 2 through the trapezoidal thread, and the valve disc 2 passes through the valve body 1. The guide rib 11 is fixed and only moves up and down without rotating. When the valve stem 3 rotates, the trapezoidal thread drives the valve disc 2 to move up and down. If the valve stem 3 only rotates, the sealing reliability of the stuffing between the valve stem 3 and the valve body 1 is increased to ensure the sealing performance of the valve.

The top of the bonnet 5 is also provided with a bracket 6, the bracket 6 is provided with a stuffing cavity 61, the stuffing cavity 61 is provided with stuffing, and the stuffing cavity 61 is also provided with a gland 62, The pressure sleeve 62 is also provided with a pressure plate 7, and the pressure plate 7 is fixed on the bracket 6 by bolts.

The above descriptions are only preferred implementations of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model all belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims (5)

1. a rising stem stop valve, comprise valve body (1), flap (2), valve rod (3) and handwheel, described valve body (1) is provided with valve gap (5), described valve gap (5) is bolted on valve body (1), described flap (2) is arranged on valve rod (3) top, it is characterized in that, Stem Mut (4) is also provided with between described flap (2) and valve rod (3), described flap (2) is fixed on flap (2) by Stem Mut (4), described Stem Mut (4) is threaded with between valve rod (3), described flap (2) is provided with the guiding groove (21) of vertical direction, described valve body (1) is provided with the vertical guiding rib (11) coordinated with guiding groove (21), and the slippage spacing with guiding rib (11) of described guiding groove (21) coordinates.

2. a kind of rising stem stop valve according to claim 1, is characterized in that, described Stem Mut (4) is connected by trapezoidal thread with between valve rod (3).

3. a kind of rising stem stop valve according to claim 1, is characterized in that, described flap (2) is provided with mounting groove (22), and described Stem Mut (4) is connected in mounting groove (22).

4. a kind of rising stem stop valve according to claim 3, is characterized in that, described mounting groove (22) bottom is also provided with the chute (23) for the upper and lower slippage of valve rod (3), and described valve rod (3) top coordinates with slippage between chute (23).

5. a kind of rising stem stop valve according to claim 1, it is characterized in that, described valve gap (5) top is also provided with support (6), described support (6) is provided with packing cavity (61), filler is provided with in described packing cavity (61), described packing cavity (61) is also provided with gland (62), described gland (62) is also provided with pressing plate (7), described pressing plate (7) is bolted on support (6).