CN201386857Y

CN201386857Y - Valve

Info

Publication number: CN201386857Y
Application number: CN200920116844U
Authority: CN
Inventors: 祝文耀; 熊军红; 成加民
Original assignee: JIEKELONG VALVE CO Ltd NINGBO
Current assignee: Ningbo Jiekelong Precision Manufacturing Co Ltd
Priority date: 2009-04-03
Filing date: 2009-04-03
Publication date: 2010-01-20
Anticipated expiration: 2019-04-03

Abstract

Disclosed is a valve which comprises a valve body (1), a valve rod (8) and a valve core (4), wherein the valve rod (8) is rotatably arranged inside the valve body (3), and the valve core (4) positioned inside an inner cavity (32) of the valve body is interlocked with the valve rod (8). The valve is characterized in that a control device capable of adjusting set-pressure and displaying values of the set-pressure is disposed on the valve body (3). Compared with the prior art, the valve has the advantages of being capable of conveniently setting the required set-pressure via an adjusting sleeve, enabling a user to finish adjustment of the set -pressure without using a special set-pressure adjusting device, enabling adjustment values of the set-pressure to be directly, visually and conveniently read from a scale, improving suitability of products, and leading the products to be adaptable to occasions requiring to change pressure.

Description

A kind of valve

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of having and adjusts cracking pressure and can show the adjustable digital display pressure-limit valve of adjusting numerical value.

Background technique

For the interior pressure that guarantees some system is no more than certain pressure, generally need to install pressure-limit valve; When pressure reached setup pressure value, pressure-limit valve was opened, thus guarantee system in be pressed in the scope of permission.And present most of pressure-limit valve has all mixed up Set pressure before dispatching from the factory; Because of there not being device and the professional pressure regulation apparatus that shows Set pressure, the user generally can't adjust Set pressure, and this brings influence for applicability of pressure-limit valve, can't be applied in the occasion that Set pressure need change, and has caused inconvenience for user's use.

Existing a kind of application number has proposed a kind of structure for the Chinese invention patent that the CN200410096821.6 name is called " digital display device of valve ", this digital display device of valve is applicable to the opening state that shows various valves, can show by numeral directly to show the unlatching number of turns, calculate flow according to flow coefficient.This device adopts the friction driving principle.Form transmission system by the friction idle wheel between dial and the valve rod.It has solved the error that has back lash, engagement dead band in the gear train assembly in the past, throws switch and cause, and adopts monodentate to stir display panel owing to cross the error of position or generation not in place in the gear train assembly.But its shortcoming is that the function that it just shows promptly shows the data of pressure, and do not have the function of regulating valve Set pressure, so its structure awaits to improve in the process of valve opening or pass small flow.

Summary of the invention

Technical problem to be solved in the utility model be provide at above-mentioned prior art present situation a kind of rational in infrastructure, easy to use and can regulation valve body Set pressure and can show the valve of adjusted value.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this valve, include valve body, valve rod and spool, described valve rod is arranged in the valve body rotationally, and described spool be arranged in valve body inner chamber and with valve rod interlock together, it is characterized in that: it is provided with the control gear that can adjust Set pressure and can show Set pressure numerical value described valve body.

As improvement, described control gear includes adjustment sleeve, display unit and transfer mechanism, described adjustment sleeve is placed on the top of valve body rotationally, and described display unit comprises scale value and tag block, described scale value is arranged on the outer surface of adjustment sleeve, and on adjustment sleeve, having bar-shaped trough, described tag block is placed in the bar-shaped trough movably, and this tag block is set together by transfer mechanism and spool.

Improve again, described transfer mechanism includes spring, spring seat, described spring seat can slide up and down to be arranged in the inner chamber of valve body, and the lower end and the spool of spring seat are set together, described spring one end contacts mutually with spring seat, and its other end contacts mutually with the inwall of stem cavity, and the upper end portion of described tag block and valve rod is fixed together, and the internal thread of described valve rod by outside thread and body cavity is connected together.

Improve again, described spring seat also can be provided with a nose bar in it, spring seat bottom and nose bar form annular cavity, described spring is for being placed in the nose bar, one end of this spring contacts mutually with the inwall of stem cavity, and the lower end of spring contacts in the bottom of the annular cavity of spring seat, and spring can be positioned in the spring seat better.

Improve again, described spool (4) is a sealing gasket, sealing pad lid places on the sealing seat of valve body MEDIA FLOW ingress, and the sealing pad is for being placed in the guide rod, one end of this guide rod is connected with spring seat, and its other end extends in the MEDIA FLOW inlet, and is inserted in movably in the interior pilot hole of sealing seat, described sealing gasket and spring seat contact together mutually, and described sealing seat and valve body are by being threaded togather.

Improve again, be equipped with the O-ring seals that can seal with body cavity on the outer circumferential face of above-mentioned valve rod its underpart.

Improve, the structure choice that described adjustment sleeve is placed on the top of valve body rotationally is: the adjustment sleeve cover is buckled in valve body top again, and the lower lumen of adjustment sleeve is stuck in the convex annular edge of valve body.

Improve again, the bar-shaped trough of described adjustment sleeve has two, these two bar-shaped troughs are for opening symmetrically on adjustment sleeve, and described tag block is a disc, both sides convex with clamping part symmetrically, tag block middle part fixes by screw and valve rod top, and two clamping parts respectively correspondence be placed in the bar-shaped trough movably; And on described adjustment sleeve, also can have the breach of bar shaped, its quantity is 4 to 10, is convenient to assembling.

Improve, described valve also includes Female connector fittings, collar again, and described Female connector fittings is for being placed on the import and the outlet port of valve body rotationally, and described collar is arranged in the inner chamber of Female connector fittings, is convenient to be connected with pipeline.

Compared with prior art, the utility model valve body is provided with the control gear that can adjust Set pressure and can show Set pressure numerical value, can set needed Set pressure by adjustment sleeve easily, the user does not need special-purpose Set pressure commissioning device can finish the adjustment of Set pressure, and the adjustment numerical value of Set pressure can directly be read from scale, and is directly perceived, convenient, improved the applicability of product, made product can be applicable to the occasion that pressure need change.

Description of drawings

Fig. 1 is the utility model embodiment's a sectional structure schematic representation;

Fig. 2 is the structural representation of adjustment sleeve among Fig. 1;

Fig. 3 is the plan view of tag block among Fig. 1.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1, Fig. 2 and shown in Figure 3, the valve of present embodiment, include valve body 3, valve rod 8 and spool 4, described valve rod 8 is arranged in the valve body 3 rotationally, this spool 4 is arranged in the inner chamber 32 of valve body and links together with valve rod 8, and valve body 3 is provided with the control gear that can adjust Set pressure and can show Set pressure numerical value.This control gear includes adjustment sleeve 7, display unit and transfer mechanism, adjustment sleeve 7 is placed on the top of valve body 3 rotationally, and described display unit comprises scale value 73 and tag block 9, and scale value 73 is arranged on the outer surface of adjustment sleeve 7, and has bar-shaped trough 71 on adjustment sleeve 7.Tag block 9 is placed in the bar-shaped trough 71 movably, and this tag block 9 is set together by transfer mechanism and spool 4.Above-mentioned transfer mechanism includes spring 6, spring seat 5, spring seat 5 can slide up and down to be arranged in the inner chamber 32 of valve body, and the lower end of spring seat 5 and spool 4 are set together, and spring 6 one ends contact mutually with spring seat 5, and the other end of spring 6 contacts mutually with the inwall of stem cavity 81, and tag block 9 is fixed together with the upper end portion of valve rod 8, and valve rod 8 is connected together by the internal thread of outside thread and body cavity 32.

As shown in Figure 1, spring seat 5 is provided with a nose bar 51 in it, and spring seat 5 bottoms and nose bar 51 form annular cavities 52, and spring 6 is for being placed in the nose bar 51, one end of this spring 6 contacts mutually with the inwall of stem cavity 81, and the lower end of spring 6 contacts in the bottom of the annular cavity 52 of spring seat.

Above-mentioned spool (4) is a sealing gasket, sealing pad lid places valve body 3 MEDIA FLOW to enter the mouth on the sealing seat 100 at 31 places, and the sealing pad is for being placed in the guide rod 41, one end of this guide rod 41 is connected with spring seat 5, and its other end extends in the MEDIA FLOW inlet 31, and be inserted in movably in the pilot hole 101 in the sealing seat 100, described sealing gasket and spring seat 5 contact together mutually, and described sealing seat 100 and valve body 3 are by being threaded togather.For sealing better, on the outer circumferential face of valve rod 8 bottoms, be equipped with the O-ring seals 82 that can seal with body cavity 32.

The structure that above-mentioned adjustment sleeve 7 is placed on the top of valve body 3 rotationally is: adjustment sleeve 7 is buckled in valve body 3 tops for cover, and the lower lumen of adjustment sleeve 7 is stuck in the convex annular of valve body 3 along in 33.Bar-shaped trough 71 on this adjustment sleeve 7 has two, these two bar-shaped troughs 71 are for opening symmetrically on adjustment sleeve 7, tag block 9 is a disc, both sides convex with clamping part 92 symmetrically, tag block 9 middle parts fix by screw 91 and valve rod 8 tops, and two clamping parts 92 respectively correspondence be placed in movably in the bar-shaped trough 71.Also have the breach 72 of bar shaped on adjustment sleeve 7, its quantity is 4 to 10.In order better to be connected with pipeline, also include Female connector fittings 1, collar 2 at above-mentioned valve, Female connector fittings 1 is import and the outlet port that is placed on valve body 3 rotationally, and collar 2 is arranged in the inner chamber of Female connector fittings 1.

Below the utility model is described further.

Because adjustment sleeve has breach, can be on valve body during assembling with adjustment sleeve, adjustment sleeve can rotate, and can not move up and down.When needs are adjusted Set pressure, rotary regulating sleeve, owing to tag block is stuck in the groove of adjustment sleeve, so the adjustment sleeve rotation drives the tag block rotation; Because tag block and valve rod are by screw attachment together, so tag block drives the valve rod rotation; Because valve rod and body cavity pass through scyewed joint, therefore along with the rotation of valve rod, the valve rod band and is moved on the tag block or move down, distance between the inner chamber of spring seat and valve rod is increased or reduce, the decrement of spring reduces thereupon or increases, because the compressive force and the amount of deformation of spiral cylinder pressure spring are proportional, spring action also reduces thereupon or increases in the pressure of sealing gasket, the pressure that is to say its setting reduces or increases, by calculating, adjustment sleeve is provided with corresponding scale value, can directly read and adjust the force value that the back is set.

Claims

1, a kind of valve, include valve body (3), valve rod (8) and spool (4), described valve rod (8) is arranged in the valve body (3) rotationally, and described spool (4) be arranged in valve body inner chamber (32) and with valve rod (8) interlock together, it is characterized in that: it is provided with the control gear that can adjust Set pressure and can show Set pressure numerical value described valve body (3).

2, valve according to claim 1, it is characterized in that: described control gear includes adjustment sleeve (7), display unit and transfer mechanism, described adjustment sleeve (7) is placed on the top of valve body (3) rotationally, and described display unit comprises scale value (73) and tag block (9), described scale value (73) is arranged on the outer surface of adjustment sleeve (7), and on adjustment sleeve (7), have a bar-shaped trough (71), described tag block (9) is placed in the bar-shaped trough (71) movably, and this tag block (9) is set together by transfer mechanism and spool (4).

3, valve according to claim 2, it is characterized in that: described transfer mechanism includes spring (6), spring seat (5), described spring seat (5) can slide up and down to be arranged in the inner chamber (32) of valve body, and the lower end of spring seat (5) and spool (4) are set together, described spring (6) one ends contact mutually with spring seat (5), and its other end contacts mutually with the inwall of stem cavity (81), and the upper end portion of described tag block (9) and valve rod (8) is fixed together, and the internal thread of described valve rod (8) by outside thread and body cavity (32) is connected together.

4, valve according to claim 3, it is characterized in that: described spring seat (5) is provided with a nose bar (51) in it, spring seat (5) bottom and nose bar (51) form annular cavity (52), described spring (6) is for being placed in the nose bar (51), one end of this spring (6) contacts mutually with the inwall of stem cavity (81), and the lower end of spring (6) contacts in the bottom of the annular cavity (52) in spring seat.

5, valve according to claim 4, it is characterized in that: described spool (4) is a sealing gasket, on sealing pad lid place interior the MEDIA FLOW of valve body (3) to enter the mouth the sealing seat (100) that (31) locate, and the sealing pad is for being placed in the guide rod (41), one end of this guide rod (41) is connected with spring seat (5), and its other end extends in the MEDIA FLOW inlet (31), and be inserted in movably in the interior pilot hole (101) of sealing seat (100), described sealing gasket and spring seat (5) contact together mutually.

6, valve according to claim 5 is characterized in that: described sealing seat (100) and valve body (3) are by being threaded togather.

7, according to the described valve of arbitrary claim in the claim 1 to 6, it is characterized in that: be equipped with the O-ring seals (82) that can seal with body cavity (32) on the outer circumferential face of described valve rod (8) its underpart.

8, according to the described valve of arbitrary claim in the claim 2 to 6, it is characterized in that: the structure that described adjustment sleeve (7) is placed on the top of valve body (3) rotationally is: described adjustment sleeve (7) cover is buckled in valve body (3) top, and the lower lumen of adjustment sleeve (7) is stuck in the convex annular of valve body (3) along in (33).

9, according to the described valve of arbitrary claim in the claim 2 to 6, it is characterized in that: the bar-shaped trough (71) of described adjustment sleeve (7) has two, these two bar-shaped troughs (71) are for opening symmetrically on adjustment sleeve (7), and described tag block (9) is a disc, both sides convex with clamping part (92) symmetrically, tag block (9) middle part fixes by screw (91) and valve rod (8) top, and two clamping parts (92) respectively correspondence be placed in movably in the bar-shaped trough (71).

10, according to the described valve of arbitrary claim in the claim 2 to 6, it is characterized in that: described adjustment sleeve (7) also has the breach (72) of bar shaped on it, and its quantity is 4 to 10.