CN1955525B

CN1955525B - Vacuum safety valve

Info

Publication number: CN1955525B
Application number: CN200510118448A
Authority: CN
Inventors: 金荣万
Original assignee: Unitech Co Ltd
Current assignee: Unitech Co Ltd
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2010-05-12
Anticipated expiration: 2025-10-28
Also published as: CN1955525A

Abstract

A high-safety vacuum valve with light weight for the container or tank of petroleum or chemical products is composed of a main body, a valve rod bearing part installed in the hole at lower part of main body, the closing disc and the annular seat with convex ribs and boss, which are assembled to the upper part of said valve rod bearing part, a sleeve pipe of valve rod, a screen, a screen cover assembled with the lower part of said valve rod, a screen hood under said screen and with central air hole, and a fastening ring assembled to said sleeve pipe for preventing the screen from moving up and down.

Description

Antivoid valve

Technical field

The present invention relates to a kind of the equipment and be used to be loaded with the container of oil or chemical products or the antivoid valve of chemical product jar.

Background technique

Below at the problem and the defective of the antivoid valve of traditional type.

Compare with Fig. 2 the present invention, when the over-saturation gas release in the jar is in air, with the floating pressure smooth conversion that produces in the jar become the safety valve of the traditional type of atmospheric pressure size to comprise all to be positioned at a unit or with the screen lid 670 and the screen cover of main body 600 assemblings, they are cast iron, and defective is that weight is big, is not suitable for very much various containers, the fixed structure complexity of screen 690, and be difficult to make, assembling and maintenance and repairing are inconvenient, the cost height.

Another example of antivoid valve attempts to remedy these problems and defective, compare with Fig. 2 of the present invention, this example is attempted the center of ring-shaped bearing element solder to screen 690, and make valve rod pass through described bearing unit, the weight of bearing unit is applied on the screen 690, therefore like this, along with time lapse, screen 690 is tending towards sagging, and causing thus needs frequent the replacing or repairing, and this is very inconvenient and uneconomic.

Summary of the invention

Antivoid valve 5 comprises:

The valve rod supporting member 610 of hole 603 assemblings of the bottom by main body 600, its top with contact closure disc 630 and have fin 611 and the ring seat of boss 612 620 is assembled; And

Sleeve 640 with the valve rod 660 of boss 612 assemblings of valve rod supporting member 610 and supporting and closure disc 630 assemblings; And

The screen of assembling with the bottom of valve rod supporting member 610 covers 670; And

With the screen 690 of screen lid 670 and 680 assemblings of screen cover, the screen cover be placed under the screen 690 and therein the heart have air hole 681; And

Assemble and prevent the snap ring 650,651 that screen 690 moves up and down with the sleeve 640 at the center of passing screen 690.

Description of drawings

Fig. 1 is the reference-view of expression serviceability of the present invention;

Fig. 2 is the sectional view of antivoid valve of the present invention.

Embodiment

Below with reference to accompanying drawing parts of the present invention and operating device are described.

Fig. 1 refers to the expression serviceability of the present invention and the assembled view of antivoid valve 5 and safety valve 1 closed state of the sidepiece assembling of sub-body 10 wherein.

Antivoid valve 5 below with reference to Fig. 2.

In Fig. 2, to compare with the antivoid valve of traditional type, antivoid valve 5 of the present invention provides the advantage of simple structure more.In other words, screen lid 670 and screen cover 680 are not cast iron, but are formed by the pressing process manufacturing by sheet iron.Therefore, reduce the size of the main body 600 of cast iron greatly.Therefore, compare with the main body of the safety valve of traditional type, the weight of main body 600 reduces about 10%-30%.

And in addition, the fixation method of screen 690 is brand-new and same simple.And solved the problem of motion up and down of the weight that is applied on the screen 690 and screen 690.Because screen lid 670 and screen cover 690 are made by sheet iron, and be therefore in light weight, low cost of manufacture.Therefore, be convenient to main body 600 assembling and carry out maintenance and repair.Certainly, main body 600 sizes reduce help manufacturing, maintenance and repair equally and reduce cost.

In other words, compare with the antivoid valve of traditional type, antivoid valve of the present invention is lighter and littler, has reduced number of components, and simple structure is provided.Therefore, provide the convenience of manufacturing and make its easier assembling, transportation, maintenance and repair.Same it competitive price is provided, particularly under the situation of long-time operation, screen 690 is not sagging or move downward, and therefore increases the serviceability of screen 690 greatly.

Illustrate in greater detail, the present invention's employing is by the screen lid 670 of pressing process manufacturing and the method for screen cover 680, and screen lid 670 and screen cover 680 separate with main body 600 to be made and assemble by screw bolt and nut and main body 600.

Bottom section in main body 600 has hole 603, and the hole makes a jar air outside enter a jar inside.Valve rod supporting member 610 is assembled with hole 603 as shown in the figure.In the case, very natural is with valve rod supporting member 610 and ring seat 620 assemblings that contact with closure disc 630.But in some cases, can remove ring seat 620, and use valve rod supporting member 610.In other words, ring seat 620 can form single-piece with valve rod supporting member 610.In addition, boss 612 is formed on the center of the fin 611 in the valve rod supporting member 610.Sleeve 640 passes the inboard of described boss 612.Sleeve 640 has hook row 641, and hook row 641 is hooked the upper surface of boss 612 with boss 612 assemblings the time, and can eliminate sagging problem.

Then, the lower surface of sleeve 640 passes screen 690 centers.Therefore, need be formed centrally the hole in screen 690, this hole has the diameter bigger slightly than the outer diameter of sleeve 640.In addition, fan-shaped screen lid 670 is placed on the lower surface of described valve rod supporting member 610.For this reason, screen lid 670 and valve rod supporting member 610 are by on the lower surface that is bolted to main body 600.

Subsequently, the upper surface of snap ring 650 and sleeve 640 assembling.And screen 690 inserts, so that assemble the then lower surface of another snap ring 651 and sleeve 640 assembling with sleeve 640.Therefore, the position of screen 690 can be securely fixed on the sleeve 640, as shown in Figure 2.For this reason, the fixing screen 690 of upper and lower snap ring 650,651.As next step, screen cover 680 is placed on the lower surface of screen 690, and then screen lid 670, screen 690 and screen cover 680 are fixed together by bolt 608 and nut 609.

Insert valve rod 660 subsequently, so that penetrate the center of sleeve 640, and 661 assembling valve rod 660 and the closure disc 630 of the screw thread by valve rod 660.Certainly, with the lid 605 be assembled in main body 600 upper surface be known technology.

The present invention with described structure uses to has very sleeve 640 and two snap rings 650,651 of length and assembles screen 690, does not therefore apply any weight on screen 690.By held stationary screen 690 in this way, even long-time operation, screen 690 is not sagging yet.Because screen 690 is motion up and down not, has improved serviceability greatly.And have the effect that the sleeve 640 of length plays guiding very much, so that guiding valve rod 660 correctly moves up and down, and side direction upset, and therefore make screen 690 not be exposed under the excessive pressure, and make closure disc 630 accurately operate.

Antivoid valve of the present invention is simple in structure, be convenient to make, safeguard, and it is in light weight, therefore be highly suitable for as the safety valve that comprises the storage tank of the container that is used for oil or chemical products. and because structure in light weight and that simplify, not only be convenient to assembling, but be convenient to cleaning, therefore very economical. same by using sleeve and snap ring held stationary screen, and eliminate the problem that screen is sagging and move up and down. same, make valve rod correctly move up and down, and do not overturn, therefore improve the serviceability of screen greatly.

Claims

1. antivoid valve (5) comprising:

The valve rod supporting member (610) of hole (603) assembling of the bottom by main body (600), assemble with the ring seat that contacts closure disc (630) (620) on its top, and this valve rod supporting member (610) has fin (611) and boss (612); And

With the sleeve (640) that the boss (612) of valve rod supporting member (610) is assembled, the valve rod (660) of this sleeve (640) supporting and closure disc (630) assembling; And

The screen of assembling with the bottom of valve rod supporting member (610) covers (670); And

With the screen (690) that screen lid (670) and screen cover (680) are assembled, the screen cover be placed under the screen (690) and therein the heart have air hole (681); And

Assemble and prevent the snap ring (650,651) that screen (690) moves up and down with the sleeve (640) at the center of passing screen (690),

Screen lid (670) and screen cover (680) are to be made by pressing process by sheet iron to form; Sleeve (640) has hook row (641), and hook row (641) is hooked the upper surface of boss (612) when assembling with boss (612).