CN201170332Y - Valve gate - Google Patents

Abstract

The utility model discloses a valve, including valve gap, valve body, hand wheel, valve rod, float lever and sealed pad, valve gap and valve body sealing connection, the valve rod inserts the valve gap, and the one end that the valve rod stretched into the valve gap is cavity, and the other end and hand wheel connection, the hollow portion of valve rod is stretched into to float lever one end, and the sealed pad is connected to the other end, and the valve body middle part sets up and cuts off, cuts off the centre and sets up the opening, and sealed pad corresponds the opening for seal the opening. By adopting the technical scheme of the utility model, the valve body and the sealing gasket are in non-metal contact, the friction resistance is small, and the sealing effect is good; when the rubber sealing gasket is worn, the rubber sealing gasket is convenient to replace; the valve rod and the floating rod are adopted, the purposes of a stop valve and a check valve can be achieved, the cost is saved, and the efficiency is increased.

Description

a valve

technical field

The utility model relates to a valve.

Background technique

At present, in the valve that can play a cut-off function, when the handle wheel rotates upward, the hand wheel drives the valve disc to move upward through the valve stem, and the valve disc is separated from the valve body, allowing the liquid to pass through the valve body to achieve the function of opening. When the hand wheel rotates downward, the handle drives the valve disc to move down through the valve stem, and the valve disc contacts and seals with the valve body to achieve the function of closing. Although the valve clack is made of stainless steel, the service temperature has increased, but the processing technology is complicated, difficult to process, and the efficiency is particularly low. After the sealing surface is worn, maintenance is difficult. The seal is a hard seal, which is easy to leak, and can only serve the purpose of stopping liquid .

Utility model content

The purpose of the utility model is to propose a valve, which can not only stop the flow of liquid, but also play the function of check and improve the sealing effect at the same time.

For this purpose, the utility model adopts the following technical solutions:

A valve, comprising a valve cover, a valve body, a handwheel, a valve stem, a floating rod and a sealing gasket, the valve cover is in sealing connection with the valve body, the valve stem is inserted into the valve cover, and the valve stem extends One end of the valve cover is hollow, and the other end is connected with the hand wheel. One end of the floating rod extends into the hollow part of the valve stem, and the other end is connected to the sealing gasket. A partition is set in the middle of the valve body. An opening is provided in the middle of the partition, and the sealing gasket corresponds to the opening and is used to close the opening.

The floating rod is a T-shaped rod, and the wide end is connected with the sealing gasket.

The gasket is connected to the floating rod through a nut.

Adopting the technical scheme of the utility model, the valve body and the sealing gasket are in non-metallic contact, with small frictional resistance and good sealing effect; when worn out, the rubber sealing gasket is easy to replace; the form of valve stem and floating rod is adopted, and at the same time it can reach the stop valve The use of two kinds of valves and check valves not only saves costs, but also increases efficiency.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a valve in a specific embodiment of the present invention.

Detailed ways

The technical scheme of the utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

Fig. 1 is a schematic cross-sectional structure diagram of a valve in a specific embodiment of the present invention. As shown in FIG. 1 , the valve includes a valve cover 1 , a valve body 2 , a hand wheel 3 , a valve stem 4 , a floating rod 5 , a gasket 6 and a nut 7 .

The bonnet is tightly connected with the valve body. The valve stem is inserted into the bonnet. One end of the valve stem protruding into the bonnet is hollow and concave. The other end is connected to the handwheel. The floating rod is a T-shaped rod, and the narrow end extends into The hollow part of the valve stem can move up and down, and the other end is installed with a gasket through a nut. A partition is set in the middle of the valve body, and an opening is set in the middle of the partition. The gasket is made of nitrile rubber, which corresponds to the opening and can close the opening.

When rotating the handwheel to drive the valve stem to move upward, the hollow part of the valve stem will provide an upper space for the floating rod, so that the pressure generated by the liquid flowing in from the inlet end of the valve body will overcome the gravity of the floating rod, sealing ring and nut, etc., and push The floating rod and sealing ring move upwards, and a distance is created between the sealing ring and the opening on the partition in the middle of the valve body, so that the liquid flows out to the outlet end of the valve body to achieve the purpose of opening the valve.

At this time, if the liquid flows back, there will be no liquid flowing in from the inlet end of the valve body, and the floating rod and sealing ring will not get pressure from the bottom up, and the liquid flowing back from the outlet end of the valve body will cause a downward pressure on the floating rod and sealing ring. The pressure between the sealing ring and the opening on the partition in the middle of the valve body is sealed to prevent the liquid from flowing back.

When the hand wheel is rotated to drive the valve stem to move downward, the valve stem will push the floating rod to overcome the pressure generated by the liquid flowing in from the inlet end of the valve body, so that the seal between the sealing ring and the opening on the middle partition of the valve body is achieved, achieving The purpose of closing the valve.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, any person familiar with the technology can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (3)

1, a kind of valve, it is characterized in that, comprise valve gap, valve body, handwheel, valve rod, buoyant beam and sealing gasket, described valve gap is connected with described valve seal, described valve rod inserts described valve gap, the end that described valve rod stretches into described valve gap is a hollow, the other end is connected with described handwheel, described buoyant beam one end stretches into the hollow space of described valve rod, the other end connects described sealing gasket, and described valve body middle part is provided with partition, and opening is set in the middle of the described partition, the corresponding described opening of described sealing gasket is used to seal described opening.

2, a kind of valve according to claim 1 is characterized in that, described buoyant beam is a T font rod member, and wide end is connecting described sealing gasket.

3, a kind of valve according to claim 2 is characterized in that, described sealing gasket connects described buoyant beam by nut.

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