CN2352730Y

CN2352730Y - Vacuum pumping machine set for smelting with additional oil filter

Info

Publication number: CN2352730Y
Application number: CN 98209756
Authority: CN
Inventors: 祁孙成
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-22
Filing date: 1998-04-22
Publication date: 1999-12-08
Anticipated expiration: 2008-04-22

Abstract

The utility model relates to a vacuum pumping machine set for smelting with additional oil filter, which comprises a slide valve pump, an oil filter, a roots vacuum pump, a valve, a corrugate pipe and an exhaustion loop system which is formed by the connection of pipelines. The oil filter is arranged in the vacuum pumping machine set, which realizes the secondary, purifying and equipment attrition reducing of pumped gases with dust, meets the requirement of vacuum melting, and extends the service life of vacuum equipment. The utility model can play the role of a gas tank and protect a roots pump when suddenly power cut or disorderly closedown.

Description

Increase the smelting vacuum unit of oil strainer

Increase the smelting vacuum unit of oil strainer, belong to mechanical vacuum equipment industry field, be applied to metal smelt.

At present; most Roots pump+slide valve pump vacuum units of using; do not have oil strainer, the fault that increases the existence from produce of oil strainer vacuum unit proposes, and its working principle is identical with being suitable for; the latter solves; because of hot dusts a large amount of in smelting produces wearing and tearing to the running of its precision, expensive vacuum equipment, play purifying and protective measure, because of the critical piece of these equipment is cast iron manufacturings; wearing and tearing can make too early scrapping, and cause economic loss.

The purpose of this utility model; provide oil strainer to be applied in the vacuum unit, or use filter separately, be placed on vacuum unit front; make the gas purification of being taken out with hot dust; filter, reduce the wearing and tearing of vacuum pump, satisfy the requirement of vacuum when smelting again; simultaneously because of sudden power or disorderly closedown; also play the effect of gas holder, the protection Roots pump runs well, and brings about tangible results.

The realization of technical solutions of the utility model:

1, oil strainer is increased between Roots pump (12) and the slide valve pump (11), relief opening (18) rubber sealing of the top suction port (1) of its straight-through type oil strainer and Roots pump, the a chain for binding criminals bolt is fixed, the relief opening of oil strainer (3) is connected with the suction port rubber sealing of slide valve pump (11), the centre accompanies valve (13), bellows (15) auxiliary forms the bleeding of vacuum line, exhaust vacuum system.

2, oil strainer being placed on vacuum unit front separately and using, also is a kind of of the simple and easy realization of technology.

3, (bypass type) oil strainer (Fig. 2) is to increase by-pass pipe suction port (9) on suction tude (2) on straight-through type oil strainer (Fig. 1) basis and container side, realizes increasing oil strainer and is using on the vacuum unit on the bypass duct.

Oil strainer is divided into upper container and bottom oil tray two-part, the suction tude of upper container inside (2), container side is welded with exhaust pipe mouth (3), suction tude (2) at internal tank, be provided with circular cone ladder filtrating equipment (7), should do the circular cone ladder-shaped frame earlier, the pipe outer wall is close in the top, container inner wall is close in the below, it is fixing again to wrap filter cloth on its circular cone ladder, form the filter cloth filtration, the circular cone trapezoid shaped is postponed the impurity that is filtered and is flowed down, reduce the detained matter on the filter cloth, they are two years old, when suction tude (2) and container weld fixedly, following Transverse plane and the upper container welded flange lower end plan range of suction tude in container is less than or equal to 30mm (reference character A), the bottom is an oil tray, its bottom surface is with fuel outlet valve (5), the side is welded with oil filler (10), Transverse plane on Transverse plane on the oil filler and the flange in one plane (reference character B) should be connected upper container and bottom oil tray, when the vacuum unit begins to start in the time of fixedly, pumping speed is just big, the lacuna that impacts pasta is just big, and along with the time lengthening pumping speed of bleeding diminishes gradually, it is just little to impact the pasta lacuna, the stream size of bleeding is impacted the lacuna difference, make pasta put row by force and catch dust, play dedusting, the effect that purifies, this gap distance should be not return oil for good when stopping vacuum pump, when last, after lower seal connects, when operator refuel at oil filler,, be convenient to operate control with volume read-out with till the not overflow, they are three years old, the oil strainer welding, be tightly connected, should do air tightness test, guarantee that leak rate is not higher than 1 * 10 ^-3Pa, oil strainer upper container profile (8) and bottom oil tray (6) internal structure, whole formation oil strainer.

Be described further in conjunction with the accompanying drawings and embodiments:

Fig. 1, (straight-through type) oil strainer

Fig. 2, (bypass type) oil strainer (accompanying drawing makes an abstract)

Smelting (straight-through type) the vacuum unit embodiment of Fig. 3, increase oil strainer

Smelting (bypass type) the vacuum unit embodiment of Fig. 4, increase oil strainer

Embodiment 1, (straight-through type) oil strainer (Fig. 1) neutralization is applied to increase oil strainer (straight-through type) vacuum unit (Fig. 3), be mainly used in old Plant reconstruction plant modernization, simply, province's expense, accompanying drawing, dotted portion is old unit equipment material object, solid line partly is to increase oil strainer and mounting point, guiding valve (11) and Roots pump (12) all are fixed on the support on (19), its slide valve pump bleeding point, by bellows (15) and control valve (13), receive on the relief opening (18) of Roots pump (12) whole formation vacuum suction unit mutually with the relief opening (3) shown in the filter (20).

Embodiment 2; be applied to vacuum unit (Fig. 4) in (bypass type) oil strainer (Fig. 2) with bypass duct; be to smelt reasonable vacuum unit in the operation; it connects the suction port of Roots pump (12); connect valve (13) by elbow; pumped gas passes through from Roots pump when opening; (straight-through type) vacuum unit is identical; when valve (13) ends; gas vertically descends pipe to pass through from threeway; through bellows (15); the suction tude (9) that valve (13) enters the side of bypass bend (16) and oil strainer is connected; gas is through its self-filtering; purify; take away or discharge by slide valve pump (11); here use two valves (13); it is to Roots pump (12) starting and alternately opens respectively when shutting down or end; purpose protection Roots pump reduces the pollution dust when quitting work and is damaged, and the band bypass duct is good here all right.

Embodiment 3, use oil strainer (Fig. 1) separately, can be placed on vacuum unit front, be to using the vacuum unit need not transform simple and easy use way, before only oil strainer being received the vacuum unit, oil strainer relief opening (3) is connected the vacuum machine assembly air-exhausting mouth, and its air inlet mouth of pipe (1) access is taken out pipeline and is got final product.

Claims

1, increases the smelting vacuum unit that oil filters, it comprises sliding valve vacuum pump, Roots pump, valve and oil strainer part, it is characterized in that increasing oil strainer, be divided into upper container and bottom vacuum oil tray, upper container outer has suction port and relief opening, there are trapezoidal filter cloth of circular cone and bottom vacuum oil tray, whole formation oil strainer in the inside of container.

2, the smelting vacuum unit of increase oil strainer according to claim 1, its feature: oil strainer is that suction tude puts in the following Transverse plane and the clearance space position that adds the vacuum oil plane of container.

3, the vacuum unit of increase oil strainer according to claim 1, its feature: oil strainer is to increase between container inner wall the trapezoidal filter cloth of circular cone.

4, the vacuum unit of increase filter according to claim 1, its feature: oil strainer be the outer tank filler sleeve (10) of bottom vacuum oil tray go up flange (4) upper-end surface of Transverse plane and oil tray will same plane on.