CN201121722Y

CN201121722Y - Novel sluice valve

Info

Publication number: CN201121722Y
Application number: CNU2007200605550U
Authority: CN
Inventors: 陈瑞达
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-28
Filing date: 2007-11-28
Publication date: 2008-09-24
Anticipated expiration: 2017-11-28

Abstract

The utility model provides a novel gate valve which has reliable sealing, the novel gate valve comprises a valve body, a valve core arranged in the valve body and a valve rod, the valve body has vertical direction along the liquid inlet and outlet direction, along the vertical direction of the valve body, the height of the bottom part at the inner side of the valve body is uniform, the valve core is composed of a metal valve clack and an elastic layer coated at the outer side of the metal valve clack, the middle of the valve core is provided with a threaded hole, one end of the valve rod is provided with external screw threads and is screwed into the threaded hole, the other end of the valve rod extends to the outer side of the valve body, and a sealing device is arranged between the middle of the valve rod and the valve body. As the elastic outer layer of the valve core can be well fitted with the inner cavity of the valve body to reach the ideal anti-leakage effect, the groove of the valve body inner cavity of the prior gate valve can be omitted, thereby preventing the sediments from being produced at the closed position of the valve core, and being applicable to the throttle as well as the flow adjustment of the liquid flow passage.

Description

A kind of novel gate valve

Technical field

The utility model relates to a kind of novel gate valve, and it is used for the throttling or the flow adjustment of fluid line.

Background technique

In the hot-water heating industry, the pipeline gate valve is applied to the connection of various pipelines more and more, can link together pipeline gate valve and groove pipeline fast easily by groove type hoop tube adaptor and seal ring, and not limited by the fabricating yard, require low to the coaxality between pipeline, convenient for installation and maintenance, though the pipeline gate valve improves aspect installation, but its body cavity still adopts traditional groove structure, when sewage passed through this groove at a slow speed, the dirt in the water was easily in the groove deposition, like this because sedimental existence, spool can not be screwed into the position fully, thereby the generation weeping, perhaps when sediments hardness was big, spool deformed owing to screwing the excessive place that causes contacting with above-mentioned sediments of power, like this after sediments is flushed away, spool can not be fully and the valve body inner seal cause weeping to take place.

Summary of the invention

The purpose of this utility model provides the novel gate valve of a kind of reliable sealing.

The technological scheme that the utility model adopted is such: a kind of novel gate valve, comprise valve body, be located at spool and valve rod in the valve body, described valve body have along the fluid inlet and outlet direction vertically, longitudinal direction along valve body, the height unanimity of described valve body inside bottom, described spool is carried out in the elasitic layer in the metal flap outside by metal flap and bag and is formed, be provided with tapped hole in the middle of the spool, valve rod one end is provided with outside thread and revolves and is located in the described tapped hole, the valve rod the other end extends to the valve body outside, is provided with seal arrangement between described valve rod middle part and the valve body.

Aforementioned novel gate valve, described elastic outer layer is a rubber layer.

Aforementioned novel gate valve, described valve body inboard is coated with the powder epoxy resin layer.

Aforementioned novel gate valve is provided with bearing between described valve rod middle part and the valve body.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: the elastic outer layer of described spool can be well reaches desirable leak preventing effect with body cavity is suitable, thereby save the groove of known gate valve body inner chamber, avoid producing sediments in the spool operating position, sealing is reliable; Further improve, help improving feedwater water quality by being coated with the powder epoxy resin layer in the valve body inboard.

Description of drawings

Fig. 1 is embodiment's a partial sectional view;

Embodiment

With reference to figure 1, embodiment discloses a kind of novel gate valve, it comprises valve body 1, spool 2, valve rod 3, handle 4, thrust bearing 5 and " O " RunddichtringO 6 are formed, described valve body is provided with liquid entering hole and liquid outlet, be provided with the fluid passage that is communicated with described liquid entering hole and liquid outlet in the described valve body 1, defining the direction that the longshore current body is imported and exported in the described fluid passage is vertically, described fluid passage is the height unanimity of bottom vertically, described spool 2 is carried out in the nitrile butadiene rubber in the metal flap outside by metal flap and bag and is formed, metal flap in the middle of the described spool 2 is provided with tapped hole, valve rod 3 one ends are provided with outside thread and revolve and are located in the described tapped hole, valve rod 3 the other ends extend to valve body 1 outside, described handle 4 promptly is located at the end of valve rod 3, be provided with two " O " RunddichtringOs 6 and a thrust-bearing 5 between described valve rod 3 middle parts and the valve body 1, thereby not only have good leak preventing effect, and it is very flexible laborsaving that described valve rod 3 is operated.The outside of described in addition valve body 1 and fluid passage inboard are coated with the powder epoxy resin layer respectively.

In the above-described embodiments; the height of the vertical bottom of described fluid passage is consistent to be a kind of structure of comparative optimization; in fact as long as the fluid passage of spool position bottom is smooth; for the valve body that the inboard is provided with groove; it can fundamentally prevent the solid particle deposition; can realize the purpose of this utility model equally, so structure shown in previous embodiment and the accompanying drawing should be as the reason of restriction the utility model protection domain.Described rubber layer also can be by in ethylene propylene rubber, fluorine rubber or the poly fourfluoroplastics except nitrile butadiene rubber a kind of.

Claims

1, a kind of novel gate valve, comprise valve body, be located at spool and valve rod in the valve body, described valve body have along the fluid inlet and outlet direction vertically, it is characterized in that: along the longitudinal direction of valve body, the height unanimity of described valve body inside bottom, described spool is carried out in the elasitic layer in the metal flap outside by metal flap and bag and is formed, be provided with tapped hole in the middle of the spool, valve rod one end is provided with outside thread and revolves and is located in the described tapped hole, the valve rod the other end extends to the valve body outside, is provided with seal arrangement between described valve rod middle part and the valve body.

2, novel gate valve according to claim 1, it is characterized in that: described elastic outer layer is a rubber layer.

3, novel gate valve according to claim 1 is characterized in that: described valve body inboard is coated with the powder epoxy resin layer.

4, according to claim 1 or 2 or 3 described novel gate valves, it is characterized in that: be provided with bearing between described valve rod middle part and the valve body.