Counter-pull pressure detection apparatus for a casting having a cavity with an opening in a cavity wall

A detection device and cavity wall technology, which is applied in the direction of measuring the increase and decrease rate of the fluid, and using the liquid/vacuum degree to measure the liquid tightness, etc., which can solve the problems such as the inconvenience of the pressure detection method

Inactive Publication Date: 2015-11-25
KOCEL EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of inconvenient pressure detection method for castings with openings on the cavity wall in the prior art, the present invention prov

Method used

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  • Counter-pull pressure detection apparatus for a casting having a cavity with an opening in a cavity wall

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Embodiment Construction

[0012] Such as figure 1 Shown is the anti-pull type pressure detection device for a casting with an opening on the cavity wall of the present invention, including an eccentric pull plate 12 arranged against the inner opening of the casting opening, and a pressing plate 3 is provided on the outer end of the opening, and the pressing plate 3 and the opening A rubber pad 2 is provided between the outer end faces, and the pressure plate 3 is provided with an inlet pipe 10 and an outlet pipe 14 communicating with the cavity 13 of the casting. It is tightened by the tension screw 9 that runs through the pressure plate 3 and the rubber pad 2. The tension screw 9 on the upper side of the pressure plate 3 is connected with a compression nut 6. The eccentric tension plate 12 is in the shape of a triangle or a trapezoid with a small top and a large bottom. 12 upper ends and the lower end of strong connecting screw rod 9 are connected through a piercing pin 11, and the eccentric pull plat...

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Abstract

The invention relates to a counter-pull pressure detection apparatus for a casting having a cavity with an opening in a cavity wall. The apparatus comprises an eccentric draw plate abutting against in an opening of a casting. A press plate is arranged on the outer transverse plane of the opening. A rubber gasket is arranged between the press plate and the outer transverse plane of the opening. The press plate is provided with an inlet pipe and an outlet pipe that are communicated with a cavity of the casting. The outlet pipe is connected to a pressure gauge. The eccentric draw plate and the press plate are tightly drawn by a forcible pull screw that penetrates the press plate and the rubber gasket. The forcible pull screw, above the press plate, is connected to a compression nut. The eccentric draw plate is shaped like a triangle or a trapezoid that becomes increasingly larger from top to bottom. The upper end of the eccentric draw plate is in rotatable connection with the lower end of the forcible pull screw through a penetrating pin. When the eccentric draw plate rotates about the penetrating pin to a corresponding angle, the eccentric draw plate can pass through the opening of the casting along with the lower end of the forcible pull screw. The length of the bottom edge of the eccentric draw plate is greater than the caliber of the opening of the casting, the bottom edge corresponding to the penetrating pin.

Description

technical field [0001] The invention relates to a sealing detection technology of a casting cavity, in particular to a back-pull pressure detection device for a casting with an opening on the wall of the cavity. Background technique [0002] For some castings with cavities in the foundry industry, the cavities are generally used as oil cavities, circulating water cavities, compression cavities, etc. Therefore, pressure inspection should be carried out on them during quality inspection to ensure that the cavities are well sealed and there is no leakage. risk. At present, the pressure test for this type of casting cavity is to process the bolt holes on the flange surface of the cavity opening after the casting is finished, and connect the plate and the opening of the cavity with bolts, and then perform hydraulic pressure testing. However, for rough castings, the surface of the opening of the cavity is rough and uneven. When using this method for pressure testing, water and ai...

Claims

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Application Information

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IPC IPC(8): G01M3/26
Inventor 刘杰
Owner KOCEL EQUIP
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