CN202597721U

CN202597721U - Stop valve

Info

Publication number: CN202597721U
Application number: CN 201220217063
Authority: CN
Inventors: 鞠荣华; 张帮云
Original assignee: Pangang Group Panzhihua Steel and Vanadium Co Ltd
Current assignee: Pangang Group Panzhihua Steel and Vanadium Co Ltd
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2012-12-12
Anticipated expiration: 2022-05-15

Abstract

The utility model discloses a stop valve. The utility model provides the stop valve with a valve element which can be replaced. The stop valve comprises a valve body and the valve element, wherein the valve core is arranged in the valve body; the valve body consists of a body and a short pipe; the valve core consists of an upper valve core and a lower valve seat; the lower valve seat is hermetically and detachably arranged between a connecting end surface of the body and a connecting end surface of the short pipe; the upper valve core is arranged in the valve body and can be moved up and down; and a sealing end surface of the lower valve seat and a sealing end surface of the upper valve core mutually correspond and are matched. According to the stop valve, because the valve body is of a split structure, and the lower valve seat of the valve element is detachably arranged, when the valve core is damaged, the valve body can be directly separated to replace the valve element, and finally, the replaced valve element is maintained or scrapped according to the circumstances; and the structure of the stop valve has the advantages that the whole stop valve is unnecessary to be replaced, so that a large quantity of cost is saved, and even during maintenance, because the valve element is separated, the operation of maintenance is easier.

Description

Stop valve

Technical field

The utility model relates to a kind of stop valve.

Background technique

Stop valve in use, the reason that most critical defects, maintenance position and whole valve are scrapped is because the mangetic core assembly mating face is not tight.The upper valve core of stop valve mangetic core assembly or lower valve base mating face, particularly lower valve base because the temperature difference, the pressure of medium fluid, wash away, wear and tear, corrode and cause the mangetic core assembly spot corrosion, damaged, cave in, and then cause the poorly sealed situation of junction plane.And lower valve base be built-up welding, processing in valve chamber, do not have special tool and material can't take off processing.

What treatment measures were in the past taked mainly contains:

1, earlier the stop valve valve from system's replacing, disassemble, after opening the stop valve valve gap and taking off upper valve core, with instrument and abrasive material at indoor grinding upper valve core of stop valve body cavity and lower valve base, reach desirable state after, give over to subsequent use.Not only consume great amount of time and energy owing to grind a cover mangetic core assembly, but also be confined to the little latent top layer of spool junction plane defective, just can carry out grinding disposing.

2, in case be belong to spot corrosion, damaged, notch area, situation that the degree of depth is big is just directly played whole stop valve and is scrapped.Because lower valve base and upper valve core junction plane are one deck alloy material generally speaking.Particularly lower valve base through inlaying, built-up welding, processing be indoor at the valve body flowing lumen, maintenance expenses is bought a new valve than newly also big, and maintenance difficulty is very big, consuming time, consumption power.So: when big defective appears in this layer of material, in the ordinary course of things can be big, maintenance difficulty big and abandon handling because of maintenance expenses, whole deck valve door is directly scrapped.

The model utility content

The utility model technical problem to be solved provides a kind of stop valve of replaceable spool.

The utility model solves the stop valve that its technical problem adopted; Comprise valve body and spool, said spool is arranged in the valve body, and said valve body is made up of body and short tube; Said spool is made up of upper valve core and lower valve base; Said lower valve base sealing detachably is installed in the connection end face of body and being connected between the end face of short tube, and said upper valve core is arranged in the valve body and can moves up and down, the seal face of said lower valve base and the mutual corresponding coupling of the seal face of said upper valve core.

Further be, said body is provided with upper flange, and said short tube is provided with and the corresponding lower flange of upper flange, and said lower valve base clips is held between upper flange and the lower flange, and said upper flange is connected through bolt with said lower flange.

The beneficial effect of the utility model is: because valve body is split type structure; And the lower valve base of spool also is detachable the installation, therefore when spool damages, can directly take valve body apart; Change spool, last more according to circumstances with the spool maintenance of changing or scrap.The benefit of this structure just is to change whole stop valve, has therefore practiced thrift a large amount of costs, even in maintenance, because spool has been separated, therefore operation also is more prone to.Two sub-components of valve body can adopt flange to connect, and sealing is reliable, dismantles also more or less freely.

Description of drawings

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

Fig. 2 is the schematic representation of lower valve base;

Component, position and numbering among the figure: short tube 1, body 2, upper valve core 3, lower valve base 4, upper flange 5, lower flange 6, ring surface 7, through hole 8.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

As shown in Figure 1; The utility model comprises valve body and spool, and said spool is arranged in the valve body, and said valve body is made up of body 2 and short tube 1; Said spool is made up of upper valve core 3 and lower valve base 4; Said lower valve base 4 sealings detachably are installed in the connection end face of body 2 and being connected between the end face of short tube 1, and said upper valve core 3 is arranged in the valve body and can moves up and down, the seal face of said lower valve base 4 and the mutual corresponding coupling of the seal face of said upper valve core 3.In the utility model stop valve profile and existing stop valve do not have too big difference; Its difference is that valve body is made up of two sub-components; Be body 2 and short tube 1, body 2 is the position of the lower valve base 4 of conventional valves with the joint of short tube 1, and is different with conventional valves; Lower valve base 4 in the utility model is detachably to be installed between body 2 and the short tube 1; Itself be dismantled and assembled upper valve core 3, whole stop valve is all removable in addition, after assembled, does not have different with the function of existing stop valve.Owing to be the structural type that upper valve core 3 and lower valve base 4 are changed in the lump, can also carry out underhand polish processing for the mangetic core assembly that changes in pairs, also feasibility and reliability conditions are provided for various mechanicalness reparations; No longer for being the little defective of a mangetic core assembly, feasibility is provided for from now on and scrap whole deck valve door; Economical with materials, spare part expense to greatest extent when saving working time, energy and reducing labor intensity.Its structural type the time is just considered from design does not have a bolt in the valve pocket, the place of one group of spring or threaded connection, so be specially adapted to the use of high temperature, high pressure, big caliber pipe network, its maintenance form also is minimum for the influence of production system.

Concrete; As shown in Figure 1, said body 2 is provided with upper flange 5, and said short tube 1 is provided with and upper flange 5 corresponding lower flanges 6; Said lower valve base 4 clips are held between upper flange 5 and the lower flange 6, and said upper flange 5 and said lower flange 6 are connected through bolt.The upper flange 5 of body 2 does not directly match with the lower flange 6 of short tube 1, and respectively with lower valve base 4 fitted seal, after connection, form an integral body.The structure of lower valve base 4 is as shown in Figure 2; It is roughly ring, and it is corresponding that the ring surface 7 around its central through bore 8 and upper valve core 3 match, when upper valve core 3 is fallen, to seal whole valve; The upper and lower of its outer shroud respectively with upper flange 5 and lower flange 6 fitted seal, thereby form sealing is installed.The form that adopts flange to connect, more or less freely dismounting and installation therefore can better fast spools.

Claims

1. stop valve; Comprise valve body and spool; Said spool is arranged in the valve body; It is characterized in that: said valve body is made up of body (2) and short tube (1), and said spool is made up of upper valve core (3) and lower valve base (4), and said lower valve base (4) sealing detachably is installed in the connection end face of body (2) and being connected between the end face of short tube (1); Said upper valve core (3) is arranged in the valve body and can moves up and down, the seal face of said lower valve base (4) and the mutual corresponding coupling of the seal face of said upper valve core (3).

2. stop valve as claimed in claim 1; It is characterized in that: said body (2) is provided with upper flange (5); Said short tube (1) is provided with and the corresponding lower flange of upper flange (5) (6); Said lower valve base (4) clips is held between upper flange (5) and the lower flange (6), and said upper flange (5) is connected through bolt with said lower flange (6).