CN206637046U - It may filter that formula single-seat adjusting valve - Google Patents

Abstract

The utility model discloses one kind and may filter that formula single-seat adjusting valve, including valve body, and bonnet is connected with by bolt assembly on the valve body；Valve rod assembly is provided with the bonnet, the valve rod assembly lower end is fixedly connected by guide sleeve with the core assembly being arranged in valve body, and the core assembly is connected by valve seat with valve seal；Filler assembly is provided between the top half and bonnet of the valve rod assembly；The valve rod assembly includes the inner valve stem being arranged in the outer valve rod of outer valve rod and activity；The core assembly includes outer valve element and the inner spool being arranged in the outer valve element of activity；The lower end of the outer valve rod is fixedly connected with the upper end of the outer valve element, and the lower end of the inner valve stem is fixedly connected through the outer valve element with the upper end of the inner spool.Regulating valve of the present utility model can be used as common regulating valve when need not be filtered to liquid medium and use, and when needing to filter liquid medium, can be used as strainer valve.

Description

It may filter that formula single-seat adjusting valve

Technical field

It the utility model is related to one kind and may filter that formula single-seat adjusting valve.

Background technology

There are a valve element and a valve seat in single-seat adjusting valve valve body, there is the characteristics of leakage rate is small.The valve out-of-balance force Greatly, its permissible pressure is small compared with double-beat drop valve, in High Pressure Difference, heavy caliber, preferably mixes valve positioner.Inside nominal diameter >=25mm's Valve is dual-guiding structure, as long as the link position of change valve rod and valve element achieves that the on or off of liquid medium.It is existing Single-seat adjusting valve can only to liquid medium carry out on or off control, if in use, it is necessary to liquid be situated between Matter is filtered, then is needed with changing the regulating valve with filtering function, and the function can not be realized in common regulating valve, such as This also reduces operating efficiency once considerably increasing the use cost of equipment and cost of labor.

Utility model content

The purpose of the utility model is to provide one kind the defects of for prior art presence to may filter that formula single-seat adjusting valve.This reality With it is new to achieve the above object, adopt the following technical scheme that：One kind may filter that formula single-seat adjusting valve, including valve body, the valve Bonnet is connected with by bolt assembly on body；Valve rod assembly is provided with the bonnet, the valve rod assembly lower end passes through guiding Cover and be fixedly connected with the core assembly being arranged in valve body, the core assembly is connected by valve seat with valve seal；The valve Filler assembly is provided between the top half and bonnet of bar assembly；The valve rod assembly includes outer valve rod and movable and is arranged on Inner valve stem in the outer valve rod；The core assembly includes outer valve element and the internal valve being arranged in the outer valve element of activity Core；The lower end of the outer valve rod is fixedly connected with the upper end of the outer valve element, and the lower end of the inner valve stem passes through the outer valve element It is fixedly connected with the upper end of the inner spool；Wherein, the outer valve element is in hollow cylindrical-shaped structure, and it has been internally formed chamber Body；The cavity medium position is provided with spacing ring in the sealing that the cavity can be divided into upper cavity and lower chamber；It is described close The bottom of spacing ring, which is located on the bottom of the outer valve element, in envelope offers multiple coarse filtration holes, and spacing ring is upper in the sealing Portion, which is located on the both sides of the outer valve element, offers multiple thin filter bores；The cylindrical structure of main body of the inner spool, it is described The main body upper end of inner spool, which is prolonged, to be radially arranged and spacing ring outside the sealing that spacing ring is engaged in the sealing；In the sealing The internal diameter of spacing ring is less than the external diameter of the outer spacing ring of the sealing, and more than the body outer diameter of the inner spool.

The beneficial effects of the utility model：Regulating valve of the present utility model liquid medium need not be filtered when Wait and may be used as common regulating valve use, and when needing to filter liquid medium, strainer valve can be used as again Use；Two kinds of valves are combined together, and according to the mode for being actually needed selection filtering or not filtering；Greatly reduce equipment Use cost and cost of labor, improve operating efficiency.

Brief description of the drawings

Fig. 1 main view schematic diagrams of the present utility model.

Embodiment

Fig. 1 is illustrated, and be relate to one kind and be may filter that formula single-seat adjusting valve, including valve body 2, passes through bolt group on the valve body 2 Part 3 is connected with bonnet 1；Valve rod assembly is provided with the bonnet 1, the valve rod assembly lower end is by guide sleeve 44 with being arranged on Core assembly in valve body 2 is fixedly connected, and the core assembly is tightly connected by valve seat 59 and valve body 2；The valve rod assembly Top half and bonnet 1 between be provided with filler assembly 43；The valve rod assembly includes outer valve rod 41 and movable and is arranged on Inner valve stem 42 in the outer valve rod 41；The core assembly includes outer valve element 51 and movable and is arranged in the outer valve element 51 Inner spool 52；The lower end of the outer valve rod 41 is fixedly connected with the upper end of the outer valve element 51, the lower end of the inner valve stem 42 It is fixedly connected through the outer valve element 51 with the upper end of the inner spool 52；Wherein, the outer valve element 51 is in hollow cylindric Structure, it has been internally formed cavity；The cavity medium position, which is provided with, can divide into the cavity upper cavity 53 and lower chamber Spacing ring 55 in 56 sealing；In the sealing bottom of spacing ring 55 be located on the bottom of the outer valve element 51 offer it is multiple Coarse filtration hole 57, the top of spacing ring 55, which is located on the both sides of the outer valve element 51, in the sealing offers multiple thin filter bores 58；The cylindrical structure of main body of the inner spool 52, the main body upper end of the inner spool 52 prolong be radially arranged with it is described close The outer spacing ring 54 of sealing that spacing ring 55 is engaged in envelope；The internal diameter of spacing ring 55 is less than spacing outside the sealing in the sealing The external diameter of ring 54, and more than the body outer diameter of the inner spool 52.

Operation principle is as follows：Liquid medium is from left side valve port inlet port to valve body, in original state, core assembly and valve Seat, which matches, to be combined, and valve body is in cut-off state.When that need not be filtered to liquid medium, the driving of external drive unit Outer valve rod 41 moves up, and outer valve rod 41 drives outer valve element 51 to move up, now inner spool also can in sealing spacing ring 55 Moved up when being driven similarly hereinafter with the cooperation for sealing outer spacing ring 54；Core assembly and valve seat separation, liquid medium enter from valve body Mouth smoothly enters valve outlet.When needing to filter liquid medium, external drive unit driving inner valve stem 42 is upward Mobile, now sealing outer spacing ring 54 can separate with spacing ring in sealing 55, and inner spool 52 also enters from the original state of bottommost Enter into the upper cavity 53 of outer valve element 51；Now, liquid medium will enter outer from the coarse filtration hole 57 of the outer bottom of valve element 51 In lower chamber 56 in valve element 51, and entered by the through hole among spacing ring in sealing 55 in upper cavity 53 and complete liquid The first time filtering of medium, final liquid medium are flowed into the outlet of valve body 2 by the thin filter bores 58 of the both sides of upper cavity 53, and Complete second of filtering of liquid medium.

Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in Within the scope of shield.

Claims (1)

1. one kind may filter that formula single-seat adjusting valve, including valve body, bonnet is connected with by bolt assembly on the valve body；The valve Valve rod assembly is provided with lid, the valve rod assembly lower end is fixed by guide sleeve and the core assembly being arranged in valve body to be connected Connect, the core assembly is connected by valve seat with valve seal；It is provided between the top half and bonnet of the valve rod assembly Filler assembly；Characterized in that, the valve rod assembly includes the inner valve stem being arranged in the outer valve rod of outer valve rod and activity； The core assembly includes outer valve element and the inner spool being arranged in the outer valve element of activity；The lower end of the outer valve rod and institute The upper end for stating outer valve element is fixedly connected, and the lower end of the inner valve stem is fixed through the upper end of the outer valve element and the inner spool to be connected Connect；Wherein, the outer valve element is in hollow cylindrical-shaped structure, and it has been internally formed cavity；The cavity medium position is provided with The cavity can be divided into spacing ring in the sealing of upper cavity and lower chamber；The bottom of spacing ring is positioned at described outer in the sealing Offer multiple coarse filtration holes on the bottom of valve element, the top of spacing ring, which is located on the both sides of the outer valve element, in the sealing opens Provided with multiple thin filter bores；The cylindrical structure of main body of the inner spool, the main body upper end of the inner spool, which is prolonged, to be radially arranged Have and spacing ring outside the sealing that spacing ring is engaged in the sealing；The internal diameter of spacing ring is less than outside the sealing in the sealing The external diameter of spacing ring, and more than the body outer diameter of the inner spool.