CN203442153U

CN203442153U - Valve

Info

Publication number: CN203442153U
Application number: CN201320553191.5U
Authority: CN
Inventors: 申国强
Original assignee: Individual
Current assignee: Zhengzhou Bonrun Energy Saving Technology Co ltd
Priority date: 2013-09-07
Filing date: 2013-09-07
Publication date: 2014-02-19
Anticipated expiration: 2023-09-07

Abstract

The utility model provides a valve which comprises a valve body (1), a valve seat (2), a valve rod (3), a valve head (4), a valve cover (5), a casing pipe (7), a hand wheel (8) and the like. When the hand wheel (8) rotates, the valve head (4) moves vertically, however, the hand wheel (8) does not move vertically relative to the valve body (1); as the thread structure of the valve head (4) does not make contact with fluid in the valve body (1), jamming does not occur easily. An outer thread tubular structure which is protruding and concentric with the valve rod (3) is arranged at the upper end of the valve cover (5) of the valve. The casing pipe (7) connected with the valve rod (3) is installed on the outer thread tubular structure. A vertical rack structure is arranged on the outer side of the casing pipe (7), and an inner thread corresponding to the valve cover (5) is arranged on the inner side of the casing pipe (7). A rack meshed with the vertical rack on the outer side of the casing pipe (7) is arranged in the hand wheel (8). A groove is formed in the inner side of the lower end of the hand wheel (8). A snap spring (9) is clamped between the groove and a corresponding groove in the upper end of the valve body (1). An end cover (10) is installed at the upper end of the hand wheel (8).

Description

A kind of valve

Technical field

The utility model relates to a kind of control valve for fluids, particularly a kind of water heating system use traffic control valve.

Background technique

Valve is a kind of conventional fluid control device, particularly in water supply piping system, water heating system, has application more widely.In these applications, valve is controlled or Flow-rate adjustment for the switch of fluid.Valve mechanism for realizing flow switch and an adjusting by spool is up and down, it is simple in structure that this structure has, reliable operation, easy to operate feature, is widely used.

In order to regulate direct display, the handwheel part circumference of part valve is with graduation indication, by the indicated number internal valves aperture of scale; More accurate in order to indicate, when requiring hand wheel rotating and valve body do not produce and move up and down, but inner spool will move up and down and realizes regulation and control function.

To achieve these goals, a kind of valve on the market adopts the tube-in-tube structure of internal thread, this valve has a valve rod with valve bonnet seal and axially locating, the lower end of stretching into valve body part on valve rod has outer silk screw thread, the valve head that screw thread matches, outside has prism structure is arranged on herein, the prism structure of valve head mates with corresponding edge columniation structure in valve body, and valve head can not be rotated with respect to valve body.When handwheel band ovable valve stem rotates, valve rod and handwheel be not because axially locating produces and moves up and down, but move up and down by the screw thread promotion valve head of valve rod outside, thereby change the gap length between valve head and valve seat, realize the object of Flow-rate adjustment, now the graduation indication above handwheel goes out valve opening size.

In use there is following problem in the valve of this structure: because the worm structure between valve rod and valve head is arranged in valve inner fluid, when having impurity or producing fouling in fluid, can cause internal whorl bite, the malfunctioning phenomenon of valve regulated easily occurs.

Secondly, the valve head of common valve adopts plane sealing structure conventionally, the upper and lower aperture of valve and flow non-linear relation, and valve opening does not have flow indicative function accurately, is not suitable for accurate Flow-rate adjustment and uses.

Again, for the ease of with pipeline or miscellaneous part connection disassembling, a lot of valves adopt the movable joint that comprises joint, securing means and seal arrangement; But also there is the easily loosening problem that causes sealing configuration to lose efficacy and leak of securing means in this structure when bringing ease of use.

Summary of the invention

For overcoming above-mentioned deficiency, the utility model provides a kind of novel valve: during described valve handle rotation, itself do not produce and move up and down, inner spool moves up and down adjust flux along with handwheel rotation produces, and spool is difficult for bite simultaneously.

The above-mentioned technical problem of valve described in the utility model realizes by technological means below:

, comprising the parts such as valve body, valve seat, valve rod, valve head, valve gap, handwheel, valve seat is arranged in valve body, and valve gap is arranged on valve body, valve rod and be arranged between the valve gap on valve body and be provided with sliding seal, valve head is connected to valve rod lower end; The upper end of described valve gap has projection the outside thread tubulose structure concentric with valve rod; In described outside thread tubulose structure, sleeve pipe is installed; Outside of sleeve has the vertical tooth rack structure parallel with axle, and inner side has the female thread structure corresponding with the outside thread of valve gap projection; Sleeve pipe upper end is connected with valve rod; Handwheel jack shaft is to the vertical tooth rack structure having with outside of sleeve vertical tooth rack engagement, and is vertically slidably mounted on sleeve pipe; Inner side, handwheel lower end has groove, and when it is arranged on valve body, jump ring is stuck between this groove and valve body upper end respective slot; End cap is arranged on handwheel upper end.

Adopt the valve of said structure, when hand wheel rotating, by the vertical tooth rack structure in the middle of handwheel, drive sleeve rotating, and produce and move axially by the protruding outside thread being engaged with on valve gap, band ovable valve stem and valve head knee-action, change gap between valve head and valve seat, thereby control uninterrupted and break-make; Due to the positioning action of jump ring, handwheel can only rotate and can not move up and down with respect to valve body by circumference; By sliding sleeve, can move up and down with respect to handwheel, thereby while having realized handwheel rotation, its external height does not change, but the object of inner spool up-down adjustment.

In described solution, because screwed sleeve pipe is positioned at handwheel inside, do not contact valve internal fluid, therefore can not cause bite because of impurity or fouling, guaranteed valve operation reliably and with long-term.

As a kind of improvement, described valve head has the tubular lobes structure corresponding with valve seat latus rectum, on described tubular lobes structure side, have reverse V-shaped through flow hole, when valve head moves up and down, fluid, by reverse V-shaped through flow hole adjust flux, can obtain better linear flow-adjusting characteristics.

As another kind, improve, on described valve head, have annular groove, seal ring embeds in this groove, when valve head is closed, can obtain better sealing effect.

As another kind, improve, the intake-outlet of described valve adopts and comprises joint part and for joint being connected to the movable connection structure of the tightening nut part of valve body, described joint part has the tubular structure of a protrusion, insert on valve body in corresponding coaxial, parallel pipeline configuration, and by the fastening location of tightening nut, in its insertion portion radial clearance, have radial direction seal ring, it axially approaches position and has axial sealing ring.

The movable joint that adopts this structure, has double sealing structure, and when tightening nut is loosening, radial direction seal ring can slide vertically and not lose sealing effect, has guaranteed the reliability of using.

Accompanying drawing explanation

Fig. 1 is a kind of embodiment's of valve described in the utility model cross-sectional view:

Piece mark explanation in schematic diagram:

1 valve body; 2 valve seats; 3 valve rods; 4 valve heads; 5 valve gaps; Sealing between 6 valve rods and valve gap; 7 sleeve pipes; 8 handwheels; The vertical tooth rack structure matching with sleeve pipe in 9 handwheels; 10 jump rings; 11 end caps; The tubular lobes structure of 12 valve heads; Reverse V-shaped through flow hole on 13 valve heads; Seal ring on 14 valve heads; 15 PPR hot melting connectors; 15 ' metal nipple; The tightening nut of 16 hot melting connectors; The tightening nut of 16 ' metal nipple; 17 hot melt union radial direction seal rings; The outer silk of 17 ' metal union radial direction seal ring; 18 hot melt union axial sealing rings; The outer silk of 18 ' metal union axial sealing ring.

Embodiment

Below in conjunction with specific embodiment, valve described in the utility model is further illustrated:

Valve in embodiment illustrated in fig. 1, comprise the parts such as valve body 1, valve seat 2, valve rod 3, valve head 4, valve gap 5, handwheel 8, valve seat 2 is arranged in valve body 1, valve gap 5 is arranged on valve body 1, valve head 4 is connected to valve rod 3 lower ends, valve rod 3 and be arranged on and be provided with Sealing 6: between the valve gap 5 on valve body 1: the upper end of described valve gap 5 has projection the outside thread tubulose structure concentric with valve rod 3; In described outside thread tubulose structure, sleeve pipe 7 is installed; Sleeve pipe 7 upper ends are connected with valve rod 3; Sleeve pipe 7 outsides have vertical tooth rack structure, and inner side has the female thread structure corresponding with the outside thread of valve gap projection; The jack shaft of handwheel 8 is to having the vertical tooth rack structure 9 meshing with sleeve pipe 7 outside vertical tooth bars, and handwheel 8 is vertically slidably mounted on sleeve pipe 7; Handwheel 8 inner sides, lower end have groove, and when handwheel is arranged on valve body, jump ring 10 is stuck between this groove and valve body upper end respective slot; End cap 11 is arranged on the upper end of handwheel 8.

Adopt the valve of said structure, when handwheel 8 rotates, by the vertical tooth rack structure 9 in handwheel 8, drive sleeve pipe 7 rotations, the rotation of sleeve pipe 7 is produced and is axially moved up and down by the protruding outside thread coordinating with it on valve gap 5, and be with ovable valve stem 3 and valve head 4 knee-actions, change the distance between valve head 4 and valve seat 2, thereby control through-current capacity size and break-make; Positioning action due to jump ring 10, handwheel 8 can only rotate and can not move up and down with respect to valve body 1 by circumference, the sleeve pipe 7 being engaged with can slide up and down with respect to handwheel 8, thereby while having realized handwheel 8 rotation, inner valve rod 3 and valve head 4 move up and down but the indeclinable object of handwheel 8 external height.

Described in above-described embodiment, in valve, because screwed sleeve pipe 7 is positioned at handwheel 8 inside, do not contact the fluid of valve body 1 inside, therefore can not produce bite because of impurity or fouling, guaranteed valve operation reliably and with long-term.

In embodiment illustrated in fig. 1, described valve head 4 has the tubular lobes structure 12 corresponding with valve seat 2 latus rectums, on the side of described tubular lobes structure 12, have reverse V-shaped through flow hole 13, when valve head 4 moves up and down, fluid, by reverse V-shaped through flow hole 13 adjust fluxes, can obtain better flow-adjusting characteristics.

In embodiment illustrated in fig. 1, on described valve head 4, have annular groove, seal ring 14 embeds in these grooves, when valve head 4 moves down while contacting with valve seat 2, can obtain better sealing effect.

In the embodiment shown in fig. 1, the water intake of described valve is the movable connection structure that comprises PPR hot melting connector 15 and tightening nut 16, described PPR hot melting connector 15 has the tubular structure of a protrusion, insert on valve body 1 in coaxial, parallel pipeline configuration, and by fastening 16 location of tightening nut, in its insertion portion radial clearance, have radial direction seal ring 17, the position that its boss axially approaches valve body 1 has axial sealing ring 18.

The water outlet of described valve is the movable connection structure that comprises metal nipple 15 ' and tightening nut 16 ', described metal nipple 15 ' has the pipeline configuration of a protrusion, insert on valve body 1 in coaxial, parallel pipeline configuration, and by the fastening 16 ' location of tightening nut, in its insertion portion radial clearance, have radial direction seal ring 17 ', the position that its axial top approaches valve body 1 has axial sealing ring 18 '.

The movable connection structure that adopts said structure, has double seal effect, and when tightening nut 16,16 ' is loosening, radial direction seal ring 17,17 ' can slide vertically and not lose sealing effect, has guaranteed the reliability of sealing.

Described in Fig. 1, embodiment just understands technological scheme described in the utility model for better, but it is not construed as limiting, for some apparent variations, within being included in protection domain.Such as valve body 1 structure be straight or three-way valve form, the variation of using one or more union connection mouth, spool 4 shapes and material, embodiment in the variation of PPR hot melt union 15 materials and the variation of non-functional surface structure etc., be included in the utility model protection domain.

Claims

1. a valve, comprises the parts such as valve body, valve seat, valve rod, valve head, valve gap, handwheel, and valve seat is arranged in valve body, valve gap is arranged on valve body, valve rod and be arranged between the valve gap on valve body and be provided with sliding seal, valve head is connected to valve rod lower end, it is characterized in that:

The upper end of described valve gap has projection the outside thread tubulose structure concentric with valve rod; In described outside thread tubulose structure, sleeve pipe is installed; Outside of sleeve has the vertical tooth rack structure parallel with axle, and inner side has the female thread structure corresponding with the outside thread of valve gap projection; Sleeve pipe upper end is connected with valve rod; Handwheel jack shaft is to the vertical tooth rack structure having with outside of sleeve vertical tooth rack engagement, and is vertically slidably mounted on sleeve pipe; Inner side, handwheel lower end has groove, and when it is arranged on valve body, jump ring is stuck between this groove and valve body upper end respective slot; End cap is arranged on handwheel upper end.

2. valve as claimed in claim 1, is characterized in that: described valve head has the tubular lobes structure corresponding with valve seat latus rectum, on described tubular lobes texture edge, has reverse V-shaped through flow hole.

3. valve as claimed in claim 2, is characterized in that: on described valve head, have annular groove, seal ring embeds in this groove, and can form sealing surface with valve seat.

4. valve as claimed in claim 1, it is characterized in that: the intake-outlet of described valve adopts and comprises joint and for joint being connected to the movable connection structure of the tightening nut of valve body, described joint part has the tubular structure of a protrusion, insert on valve body in corresponding coaxial, parallel pipeline configuration, and by the fastening location of tightening nut, in its insertion portion radial clearance, have radial direction seal ring, it axially approaches position and has axial sealing ring.