CN205937902U - Y type gate valve - Google Patents

Abstract

The utility model discloses a Y-type gate valve, which comprises a support pipe, a middle pipe and a valve body pipe, the middle pipe is connected to the upper end of the valve body pipe, the support pipe is arranged on the upper end of the middle pipe, and the valve stem passes through the support pipe and the middle pipe. The pipe is connected to the hand wheel set on the upper end of the bracket pipe, and the gate is connected to the lower end of the valve stem. The clockwise or counterclockwise rotation of the hand wheel drives the valve stem to move down or up, and then drives the gate to move down or up. The valve body The inner wall of the left end of the pipe is provided with a ring of valve seat sealing ring. The diameter of the gate is larger than the inner diameter of the opening at the right end of the valve seat seal. The gate is rotated clockwise or counterclockwise by the hand wheel to adjust the degree of sealing connection with the valve seat seal. Fully airtight connection or partially airtight connection or non-airtight connection. The utility model has the advantages of: valve seat seal ring structure, stable flow state, reliable sealing; two-way sealing, adjustable flow, no cross-flow in the flow direction; compact structure, rapid opening and closing, smooth flow channel, small fluid resistance; good sealing performance ;Wide range of applications.

Description

A Y-type gate valve

technical field

The utility model relates to a Y-shaped gate valve, which belongs to the technical field of gate valves.

Background technique

Ordinary gate valves are large in size and cannot be installed and used in special positions of the pipeline. The maintenance is cumbersome, the cost is extremely high, and the reason for the difficulty in processing is that the opening and closing part of the gate valve is a gate, and the direction of movement of the gate and the direction of the fluid. Open and fully closed, can not be adjusted and throttling, and the airtightness is not very good, it is easy to cause cross flow.

Utility model content

The technical problem to be solved by the utility model is to provide a Y-shaped gate valve with two-way sealing, adjustable flow, and absolutely no cross-flow in the flow direction.

The utility model is realized through the following scheme: a Y-type gate valve, which includes a bracket pipe, a middle pipe and a valve body pipe, the middle pipe is connected to the upper end of the valve body pipe, and is clamped with the valve body pipe The angle is 45 degrees, the bracket pipe is arranged on the upper end of the middle pipe, and the included angle with the middle pipe is 0 degree, the valve stem passes through the bracket pipe and the middle pipe and is connected to the The hand wheel at the upper end of the bracket pipe, the gate plate is connected to the lower end of the valve stem, the hand wheel rotates clockwise to drive the valve stem to move down, and then drives the gate plate to move down, and the hand wheel rotates counterclockwise to drive The valve stem moves up, and then drives the gate to move up. The inner wall of the left end of the valve body tube is provided with a ring of valve seat sealing ring. The diameter of the plate is larger than the inner diameter of the opening at the right end of the valve seat sealing ring, and the gate plate is rotated clockwise or counterclockwise by the handwheel to adjust the degree of sealing connection with the valve seat sealing ring, completely or partially Sealed connection or non-sealed connection, the inner wall of the right end of the valve body tube is provided with a support ring.

The valve seat sealing ring forms an integral structure with the inner wall of the valve body pipe, and there is an end distance between the valve seat sealing ring and the left end port of the valve body pipe.

The upper end of the bracket pipe is provided with a valve stem nut, the valve stem passes through the valve stem nut, the handwheel is connected with the valve stem by being sleeved on the valve stem nut, and the upper end of the handwheel is provided with A round nut is sleeved on the outer wall of the stem nut.

The lower end of the hand wheel is provided with bearings, and the bearings are arranged on both sides of the valve stem nut. The upper end of the bearing is provided with a bearing and cap, and the bearing and cap are sleeved on the valve stem nut. The bearing cap is arranged between the bearing and the hand wheel, and both the bearing cap and the bearing are arranged inside the support tube.

The upper end of the middle pipe is provided with a valve cover, and the valve cover is connected to the upper end of the middle pipe through middle flange bolts and middle flange gaskets.

The lower end of the bracket pipe is connected to the upper end of the valve cover through a gland, the valve rod passes through the gland and the valve cover, and the gland is fixed by gland bolts.

Filling is provided at the joint between the gland and the valve cover and the valve stem.

The left end port of the valve body pipe is provided with a valve seat and cap, and the valve seat and cap are connected with the valve seat sealing ring, and the inner diameter of the valve seat and cap decreases sequentially from outside to inside.

Multiple O-rings are arranged between the valve seat sealing ring and the inner wall of the valve body pipe.

A screw plug is provided between the sealing ring of the valve seat and the inner wall of the bottom of the valve body tube.

The beneficial effects of the utility model are:

1. A Y-type gate valve of the utility model adopts a movable valve seat sealing ring structure, stable flow state, and reliable sealing; two-way sealing design, adjustable flow rate, no cross-flow in the flow direction, and the internal flow path design of the valve is suitable for abrasive conditions ;

2. A Y-type gate valve of the utility model has the advantages of compact structure, rapid opening and closing, small torque, smooth flow channel and small fluid resistance;

3. A Y-type gate valve of the utility model has good sealing performance: the movable valve seat at one end is automatically and closely matched with the gate plate with the force of the pipeline medium, and the seal is tight without leakage;

4. A Y-shaped gate valve of the utility model can be used for multiple purposes: it can replace ordinary gate valves, stop valves, and flow adjustment functions;

5. A Y-type gate valve of the present utility model has a wide range of applications, and is widely used in water supply, petrochemical, metallurgy, mining, textile, energy, papermaking, food, steel and other pipeline systems to switch the flow direction of the medium and to control the flow of the medium. Split or mix fluids.

Description of drawings

Fig. 1 is a schematic structural diagram of a Y-type gate valve of the present invention.

In the figure: 1 is the bracket pipe, 2 is the middle pipe, 3 is the valve body pipe, 4 is the valve stem, 5 is the hand wheel, 6 is the gate plate, 7 is the valve seat sealing ring, 8 is the support ring, and 9 is the valve stem Nut, 10 is a round nut, 11 is a bearing, 12 is a bearing cap, 13 is a valve cover, 14 is a middle flange bolt, 15 is a middle flange gasket, 16 is a gland, 17 is a gland bolt, 18 is Packing, 19 is a valve seat and cap, 20 is an O-ring, and 21 is a screw plug.

detailed description

Below in conjunction with Fig. 1, the utility model is further described, but the protection scope of the utility model is not limited to the content.

Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer "Respectively refer to the direction toward or away from the geometric center of a specific component, and the drawings are all in a very simplified form and use inaccurate ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

For the sake of clarity, not all features of an actual embodiment are described, and in the following description, well-known functions and constructions are not described in detail since they would obscure the invention with unnecessary detail, and should be considered in the development of any actual embodiment. in which a great deal of implementation detail must be worked out to achieve the developer's specific goals, such as changing from one embodiment to another in accordance with system-related or business-related constraints, and furthermore, it should be recognized that such development work may be complex and costly Timely, but merely routine work for those skilled in the art.

A Y-type gate valve, which includes a bracket tube 1, a middle tube 2 and a valve body tube 3, the middle tube 2 is connected to the upper end of the valve body tube 3, and the included angle with the valve body tube 3 is 45 degrees, and the bracket tube 1 is set At the upper end of the middle pipe 2, and the included angle with the middle pipe 2 is 0 degrees, the valve stem 4 passes through the bracket pipe 1 and the middle pipe 2 and is connected to the handwheel 5 arranged at the upper end of the bracket pipe 1, and the gate 6 is connected to the valve At the lower end of the stem 4, the hand wheel 5 rotates clockwise to drive the valve stem 4 to move down, which in turn drives the gate 6 to move down, and the counterclockwise rotation of the hand wheel 5 drives the valve stem 4 to move up, which in turn drives the gate 6 to move up. The inner wall of the left end of 3 is provided with a valve seat sealing ring 7, the opening of the right end of the valve seat sealing ring 7 is 45 degrees from the whole, the diameter of the gate plate 6 is larger than the inner diameter of the right end opening of the valve seat sealing ring 7, and the gate plate 6 passes through the handwheel 5 Rotate clockwise or counterclockwise to adjust the degree of sealing connection with the valve seat sealing ring 7, complete sealing connection or partial sealing connection or non-seal connection, the inner wall of the right end of the valve body tube 3 is provided with a circle of support ring 8.

The valve seat sealing ring 7 forms an integral structure with the inner wall of the valve body pipe 3 , and there is an end distance between the valve seat sealing ring 7 and the left end port of the valve body pipe 3 .

The upper end of the bracket pipe 1 is provided with a valve stem nut 9, the valve stem 4 passes through the valve stem nut 9, the hand wheel 5 is connected with the valve stem 4 by being sleeved on the valve stem nut 9, and the upper end of the hand wheel 5 is provided with a round nut 10, The round nut 10 is sleeved on the outer wall of the stem nut 9 .

The lower end of the hand wheel 5 is provided with a bearing 11, the bearing 11 is arranged on both sides of the valve stem nut 9, the upper end of the bearing 11 is provided with a bearing and cap 12, the bearing and cap 12 is set on the valve stem nut 9, and the bearing and cap 12 is set Between the bearing 11 and the hand wheel 5 , the bearing and the cap 12 and the bearing 11 are both arranged inside the support pipe 1 .

The upper end of the middle pipe 2 is provided with a bonnet 13 , and the bonnet 13 is connected to the upper end of the middle pipe 2 through a middle flange bolt 14 and a middle flange gasket 15 .

The lower end of the bracket pipe 1 is connected to the upper end of the valve cover 13 through the gland 16, the valve stem 4 passes through the gland 16 and the valve cover 13, and the gland 16 is fixed by the gland bolt 17.

A filler 18 is provided at the joint between the gland 16 and the valve cover 13 and the valve stem 4 .

The left end port of the valve body pipe 3 is provided with a valve seat and cap 19, the valve seat and cap 19 is connected with the valve seat sealing ring 7, and the inner diameter of the valve seat and cap 19 decreases sequentially from outside to inside.

Multiple O-rings 20 are provided between the valve seat sealing ring 7 and the inner wall of the valve body pipe 3 .

A screw plug 21 is provided between the valve seat sealing ring 7 and the inner wall at the bottom of the valve body pipe 3 .

Working: In one case, under the clockwise rotation of the hand wheel 5, the valve stem 4 is driven to push the gate plate 6 to move to the closed position, the medium enters from the left end to pressurize, and the valve seat sealing ring 7 is automatically connected to the gate due to the force of the medium. The plate 6 is tightly combined to make it sealed; another situation: under the action of the clockwise rotation of the hand wheel 5, the valve stem 4 is driven to push the gate plate 6 to shift to the closed position, and the medium enters from the right end to pressurize the gate plate due to the force of the medium 6 is automatically tightly combined with the valve seat sealing ring 7 to make it airtight.

Although the technical solutions of the present utility model have been elaborated and enumerated in detail, it should be understood that for those skilled in the art, it is necessary for those skilled in the art to make modifications to the above-mentioned embodiments or adopt equivalent alternatives. It is obvious that these modifications or improvements made on the basis of not departing from the spirit of the utility model all belong to the protection scope of the utility model.

Claims (10)

1. a kind of Y type gate valve it is characterised in that：It includes stand tube（1）, central tube（2）And valve body tube（3）, described central tube （2）It is connected to described valve body tube（3）Upper end, and with described valve body tube（3）Angle be 45 degree, described stand tube（1）Setting In described central tube（2）Upper end, and with described central tube（2）Angle be 0 degree, valve rod（4）Through described stand tube（1）With Described central tube（2）It is connected to and be arranged on described stand tube（1）The handwheel of upper end（5）, flashboard（6）It is connected to described valve rod（4） Lower end, described handwheel（5）Turn clockwise the described valve rod of drive（4）Move down, and then drive described flashboard（6）Move down, described Handwheel（5）Rotate counterclockwise drives described valve rod（4）Upper shifting, and then drive described flashboard（6）Upper shifting, described valve body tube（3）'s Left end inwall is provided with a circle valve seat insert（7）, described valve seat insert（7）Right-end openings integrated therewith be in 45 degree, described Flashboard（6）With diameter greater than described valve seat insert（7）Right-end openings internal diameter, described flashboard（6）By described handwheel（5） Turn clockwise or rotate counterclockwise is adjusted and described valve seat insert（7）Be tightly connected degree, fully seal connection or Person's part is tightly connected or blow-by connects, described valve body tube（3）Right-hand member inwall be provided with a circle bracing ring（8）.

2. a kind of Y type gate valve according to claim 1 it is characterised in that：Described valve seat insert（7）With valve body tube（3） Inwall formed integral structure, described valve seat insert（7）With described valve body tube（3）Left end port leave one end distance.

3. a kind of Y type gate valve according to claim 1 it is characterised in that：Described stand tube（1）Upper end be provided with valve rod spiral shell Female（9）, described valve rod（4）Through described valve stem nut（9）, described handwheel（5）By being enclosed within described valve stem nut（9）Go up and valve Bar（4）Connect, described handwheel（5）Upper end be provided with round nut（10）, described round nut（10）It is enclosed within described valve stem nut（9）'s Outer wall.

4. a kind of Y type gate valve according to claim 3 it is characterised in that：Described handwheel（5）Lower end be provided with bearing （11）, described bearing（11）It is arranged on described valve stem nut（9）Both sides, described bearing（11）Upper end be provided with bearing cap （12）, described bearing cap（12）It is enclosed within described valve stem nut（9）On, described bearing cap（12）It is arranged on described bearing（11） With described handwheel（5）Between, described bearing cap（12）With described bearing（11）It is arranged at described stand tube（1）Inside.

5. a kind of Y type gate valve according to claim 1 it is characterised in that：Described central tube（2）Upper end be provided with valve gap （13）, described valve gap（13）By middle flange bolt（14）With middle flange gasket（15）It is connected to described central tube（2）Upper end.

6. a kind of Y type gate valve according to claim 5 it is characterised in that：Described stand tube（1）Lower end pass through gland （16）It is connected to described valve gap（13）Upper end, described valve rod（4）Through described gland（16）With described valve gap（13）, described pressure Lid（16）By gland bolt（17）Fixing.

7. a kind of Y type gate valve according to claim 6 it is characterised in that：Described gland（16）With described valve gap（13）With Described valve rod（4）Junction be provided with filler（18）.

8. a kind of Y type gate valve according to claim 1 it is characterised in that：Described valve body tube（3）Left end port be provided with valve Seat cap（19）, described valve seat cap（19）With described valve seat insert（7）It is connected, and described valve seat cap（19）Internal diameter It is sequentially reduced from outside to inside.

9. a kind of Y type gate valve according to claim 1 it is characterised in that：Described valve seat insert（7）With described valve body tube （3）Inwall between be provided with many O-ring（20）.

10. a kind of Y type gate valve according to claim 1 it is characterised in that：Described valve seat insert（7）With described valve body Pipe（3）It is provided with plug screw between the inwall of bottom（21）.