CN102269285A

CN102269285A - Automatic blowdown valve

Info

Publication number: CN102269285A
Application number: CN 201110044483
Authority: CN
Inventors: 冯宝令; 盛宝祥; 王志涛
Original assignee: ZIBO BOSHAN EXPLOSION-PROOF ELECTRICAL APPARATUS FACTORY Co Ltd
Current assignee: Shandong shield explosion proof equipment Technology Co., Ltd.
Priority date: 2011-02-23
Filing date: 2011-02-23
Publication date: 2011-12-07
Anticipated expiration: 2031-02-23
Also published as: CN102269285B

Abstract

The invention relates to an automatic blowdown valve, and belongs to the field of blowdown valves. The automatic blowdown valve comprises a valve body (5), and is characterized in that: the valve body (5) is divided into an upper part and a lower part which are in threaded connection; the upper part in the valve body (5) is provided with a valve core (3); the valve body (5) above the valve cover (3) is provided with a rubber sealing ring (2); a lining is arranged in the rubber sealing ring (2); three blowdown holes (4) are uniformly distributed at the upper periphery of the upper part valve body (5); a spring (6) is arranged in the valve body (5) at the bottom of the valve core (3); and a jacket (1) is sleeved outside the valve body (5). The automatic blowdown valve has the advantages of sealing reliability, small volume, light weight, good blowdown effect and the like, and is convenient to open.

Description

Automatic blowdown valve

Technical field

Automatic blowdown valve belongs to the sewage draining valve field.

Background technique

The blowdown valve of valve generally is contained in the lumen of valve, the blowdown of existing valve adopts sealing with the plug blowdown of taper pipe thread or with the sealing means of nonmetal sealing material such as teflon and metal mostly, adopt the blowdown valve of sealing with the taper pipe thread plug, in fact be exactly a plug that is processed with sealing with taper pipe thread, when the needs blowdown, plug to be screwed down from valve body, realize that the valve lumen communicates with atmosphere, the dirt of discharge valve lumen, major defect is that plug repeatedly causes the screw thread of sealing usefulness to damage after valve body screws down, it is unreliable to cause sealing, and working life is short, time-consuming taking a lot of work; Another kind of blowdown valve seals owing to nonmetal sealing materials such as having adopted teflon, surpass nonmetallic Applicable scope in temperature or pressure, be that temperature is when surpassing 200 ℃ or pressure medium and surpassing 15MPa, or when being arranged in the medium, just can not use more, bigger hard particles, both made in normal Applicable scope, the life-span of this kind blowdown valve is also shorter relatively, does not realize the function of automatic pollution discharge.

Summary of the invention

The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide that a kind of automatic on-off, the big sealing of blowdown flow rate are reliable, in the filter that is applicable to assorted dirty serious medium, the automatic blowdown valve of long service life.

The technical solution adopted for the present invention to solve the technical problems is: this automatic blowdown valve, comprise valve body, it is characterized in that: valve body is divided into up and down two-part, is threaded, the valve body internal upper part is equipped with spool, on the valve body of spool top rubber seal is housed, lining is housed, uniform three pollutant exhaust holes in border on the valve body of top in the rubber seal, in the valve body of spool bottom spring is housed, the valve body outside is with sheath.

Described spool top is conical surface, and the upper-end surface is provided with spherical concave surface, and upper taper plane of inclination and rubber seal match with the line contact form, and the spool bottom is provided with screw, and the adjustment screw of Regulation spring pressure is housed in the screw.The setting of the spherical concave surface of spool upper-end surface is that to make high pressure liquid open the power of spool more concentrated, the compound rubber seal ring use that is provided with of spool upper taper face has guaranteed excellent sealing performance, make when blowdown, have different assorted dirty and form the soiling solution of particle can be along tiltedly descending, flinging sewage draining exit discharges smoothly fast, and when valve core reset, residue is difficult for being trapped on the mating face of spool and rubber seal, and sealing can more be leaned on.

Described valve body upper end portion is provided with outside thread, and the upper and lower end of sheath is equipped with internal thread.

Compared with prior art, the beneficial effect that the present invention had is:

1, sealing is reliable, filth-discharging effect is good, big flow blowdown makes latus rectum programmable bigger, the sorrow that does not have obstruction, it is more concentrated that the setting of the spherical concave surface of spool upper-end surface makes high pressure liquid open the power of spool, spool upper taper face compound rubber seal ring uses and has guaranteed excellent sealing performance, make when blowdown, have different assorted dirty and form the soiling solution of particle can be along tiltedly descending, flinging sewage draining exit discharges smoothly fast, and when valve core reset, residue is difficult for being trapped on the mating face of spool and rubber seal, blowdown is rapid, thoroughly, do not need to clean, reliability height and cost are low, and it is unreliable to have solved existing blowdown valve sealing effectively, working life is short, defectives such as narrow application range are avoided the valve phenomenons such as evaporating, emitting, dripping or leaking of liquid or gas at sewage draining exit place in use;

2, volume is little, in light weight, and installation, convenient disassembly are opened flexibly, and the trouble that automatic pollution discharge has been saved artificial unlatching, closed is time saving and energy saving.

Description of drawings

Fig. 1 is a plan view sectional view schematic representation of the present invention.

Wherein: 1, sheath 2, rubber seal 3, spool 4, pollutant exhaust hole 5, valve body 6, spring 7, adjustment screw.

Fig. 1 is a most preferred embodiment of the present invention, and the present invention will be further described below in conjunction with accompanying drawing 1:

Embodiment

With reference to accompanying drawing 1:

This blowdown valve; comprise sheath 1; spool 3 and valve body 5; valve body 5 is divided into two-part up and down; be threaded; valve body 5 internal upper parts are equipped with spool 3; on the valve body 5 of spool 3 tops rubber seal 2 is housed; for protection rubber seal 2 is not washed out by highly pressurised liquid; in the rubber seal 2 metal lining is housed; uniform three pollutant exhaust holes 4 in border on the top valve body 5; in the valve body 5 of spool 3 bottoms spring 6 is housed; spool 5 bottoms are provided with screw, the adjustment screw 7 of Regulation spring 6 pressure sizes are housed, in order to fixing spring 6 in the screw; guarantee the stability of spring 6; valve body 5 outsides are with; the underpart all has the sheath 1 of internal thread, and on the outside thread that screws in the filter sewage draining exit, valve body 5 tops are provided with outside thread; on the internal thread that screws in the filter sewage draining exit; spool 3 upper-end surfaces are provided with spherical concave surface, and spool 3 tops are conical surface, and upper taper plane of inclination and rubber seal 2 match with the line contact form.

Working procedure is as follows:

The present invention in use, be installed in the sewage draining exit place of filter, valve body 5 is connected with the internal thread of sewage draining exit, sheath 1 is connected with the sewage draining exit outside thread, soiling solution after the filter flushing is entered in the automatic blowdown valve by the sewage draining exit of filter bottom, soiling solution impacts spool 3 tops, when forming greater than 15MPa pressure, promote spool 3 downward extrusion springs 6, when spool 3 moves down the opening scope that enters three pollutant exhaust holes 4 on the valve body 5, soiling solution is discharged from pollutant exhaust hole 4 with radial along the centrum upper end of spool 3, the lower end of sheath 1 is threaded, in order to connecting the aflter-fillter that is provided with in addition, with this soiling solution of discharging is utilized once more through returning emulsion box after filtering once more, after blowdown finishes, spool 3 comes back to valve body 5 tops and rubber seal 2 identical sealings under the effect of spring 6 restoring forces, blowdown valve cuts out automatically, and the liquid outlet of filter and liquid entering hole are opened automatically again simultaneously, and filter recovers the normal filtration working state.

The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.

Claims

1. automatic blowdown valve, comprise valve body (5), it is characterized in that: valve body (5) is divided into up and down two-part, is threaded, valve body (5) internal upper part is equipped with spool (3), on the valve body (5) of spool (3) top rubber seal (2) is housed, rubber seal is equipped with lining in (2), and top valve body (5) is gone up uniform three pollutant exhaust holes in border (4), in the valve body (5) of spool (3) bottom spring (6) is housed, valve body (5) outside is with sheath (1).

2. automatic blowdown valve according to claim 1, it is characterized in that: described spool (3) top is conical surface, the upper-end surface is provided with spherical concave surface, and upper taper plane of inclination and rubber seal (2) match with the line contact form, spool (3) bottom is provided with screw, and the adjustment screw (7) of Regulation spring (6) pressure is housed in the screw.

3. automatic blowdown valve according to claim 1 is characterized in that: described valve body (5) upper end portion is provided with outside thread, and the upper and lower end of sheath (1) is equipped with internal thread.