CN201425539Y - Airtight detection device of valve face - Google Patents

Abstract

The utility model discloses a valve surface airtightness detection device, which is characterized by comprising a workbench, wherein a detection seat is arranged on the workbench, a detection hole is arranged on the detection seat, a valve to be detected can be inserted into the detection hole, and the end part of the detection hole is provided with a conical binding surface which is bound with the valve surface; one end of the pressurizing cylinder is communicated with the detection hole; the jacking device can be jacked on the end face of the valve inserted into the detection hole; the utility model discloses can detect air valve's air tightness performance effectively, work efficiency is high, and labour saving and time saving saves labour, and is with low costs, still has small, light in weight, simple structure, advantages such as the operation of being convenient for.

Description

An airtight detection device for a gas door surface

technical field

The utility model relates to an airtight detection device, in particular to an airtight detection device for detecting the airtight performance of a valve.

Background technique

After the valve processing is completed and before it is assembled into the engine, the air tightness test of the valve surface must be carried out in advance to confirm the quality of the processed valve products, prevent inferior valves from entering the market, and ensure the working performance of the engine. At present, there is no relevant report on a special airtight detection device for valves. Therefore, it is necessary to develop a kind of air leakage test on the valve surface after the valve is processed and before it is assembled into the engine, so as to confirm the quality of the processed valve. Poor airtight detection device.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides an airtight detection device for performing a bonding air leakage test on the valve surface before the valve is assembled into the engine after the valve is processed, and then confirms the quality of the processed valve.

The technical scheme that the utility model solves its technical problem adopts is:

A valve surface airtight detection device, characterized in that it includes a workbench, a detection seat is installed on the workbench, a detection hole is arranged on the detection seat, the valve to be detected can be inserted into the detection hole, and the end of the detection hole There is a tapered fitting surface attached to the valve surface; a pressurized cylinder, one end of the pressurized cylinder communicates with the detection hole; a pressing device, which can press against the valve inserted into the detection hole end face.

As a preferred embodiment of the present utility model, the pressing device includes a pressing cylinder, the cylinder rod of the pressing cylinder is connected with a sliding rod inserted on the workbench, a connecting plate is installed on the sliding rod, and the connecting plate A push rod that can push against the end face of the valve inserted into the detection hole is provided when the push-press cylinder is retracted.

As an improvement to the above-mentioned embodiment of the present utility model, it also includes a pressing auxiliary device, which includes a pivoting plate pivotally arranged on the workbench and a driving cylinder, one end of the pivoting plate It is hinged with the cylinder rod of the drive cylinder, and the other end is provided with a top block that can be pressed against the end face of the push rod.

As a further improvement of the above-mentioned embodiment of the utility model, an airtight detection oil pipe is installed on the workbench, and the outlet of the airtight detection oil pipe corresponds to the position of the detection hole.

The beneficial effects of the utility model are: when airtight testing, the valve is inserted into the detection hole, the valve surface is fitted with the tapered fitting surface of the detection hole to seal it, and at the same time, the top pressure device is pressed against the end surface of the valve , Inflate the pressurized cylinder, inject a certain gas pressure into the detection hole, and observe the airtightness between the valve surface and the tapered fitting surface to detect the airtightness of the valve, so as to confirm the quality of the processed valve . The utility model can effectively detect the airtight performance of the valve, has high working efficiency, saves time, labor and labor, and is low in cost. It also has the advantages of small size, light weight, simple structure, and convenient operation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is an enlarged schematic view of the detection seat.

Detailed ways

Referring to Fig. 1 and Fig. 2, a valve surface airtight detection device disclosed in the utility model includes a workbench 1, on which a detection seat 2 is installed, and a detection hole 3 is arranged on the detection seat 2. The air valve for testing air tightness can be inserted into the detection hole 3, and the end of the detection hole 3 is provided with a tapered fitting surface 4, and the valve surface is bonded to the tapered fitting surface 4 after the valve is inserted into the detection hole.

An airtight detection oil pipe 5 is installed on the workbench 1. The outlet of the airtight detection oil pipe 5 corresponds to the position of the detection hole 3. The airtight detection oil pipe 5 can inject a certain amount of liquid oil into the tapered joint surface of the valve and the detection hole. .

A pressurized cylinder 6 is installed below the workbench 1, and one end of the pressurized cylinder 6 communicates with the detection hole 3, and a certain pressure of gas can be injected into the detection hole by the pressurized cylinder when the valve is airtight tested.

A pressing device is installed on the workbench 1, and the pressing device can press against the end face of the valve inserted into the detection hole.

As shown in the figure, the pressing device used in this embodiment includes a pressing cylinder 7, the cylinder rod 8 of the pressing cylinder 7 is connected with a sliding rod 9 inserted on the workbench, and a connecting rod 9 is installed on the sliding rod 9. Plate 10, the connecting plate 10 is provided with a push rod 11 that can push against the end face of the valve inserted into the detection hole when the push cylinder retracts.

As shown in the figure, a pressing auxiliary device is also installed on the workbench 1, and the pressing auxiliary device includes a pivot plate 12 pivotally arranged on the workbench 1 and a driving cylinder 13, wherein one end of the pivot plate 12 It is hinged with the cylinder rod of the drive cylinder 13, and the other end is provided with a top block 14 that can be pressed against the end surface of the push rod.

The working principle of the utility model is: during the airtight detection, insert the valve into the detection hole, make the valve surface and the conical fitting surface of the detection hole fit to seal, and at the same time press the top pressure device on the end surface of the valve , and then press the top block of the top pressure auxiliary device on the top pressure device, use the airtight detection oil pipe to inject a certain amount of liquid oil into the tapered joint surface of the valve and the detection hole, inflate the pressurized cylinder, and inject it into the detection hole Inject a certain gas pressure and observe the airtightness between the valve surface and the conical fitting surface to detect the airtightness of the valve. If there is no bubble overflow between the valve surface and the conical fitting surface, the detected valve The airtight performance of the valve is good, otherwise the airtight performance of the detected valve is poor, so that the quality of the processed valve can be confirmed.

The utility model can effectively detect the airtight performance of the valve, has high working efficiency, saves time, labor and labor, and is low in cost. It also has the advantages of small size, light weight, simple structure, and convenient operation.

Claims (4)

1. airtight pick-up unit of valve face, it is characterized in that it comprises a worktable, be equipped with on the worktable and detect seat that this detection seat is provided with and detects the hole, valve to be detected can insert in this detection hole, and the end in detection hole is provided with the taper binding face of fitting with valve face; One pressurising cylinder, an end of this pressurising cylinder communicates with the detection hole; One jack unit, but this jack unit roof pressure is inserting the valve end face that detects in the hole.

2. the airtight pick-up unit of a kind of valve face according to claim 1, it is characterized in that described jack unit comprises a roof pressure cylinder, the slide bar that the cylinder rod of this roof pressure cylinder and interts on worktable is connected, web joint is installed on the slide bar, and roof pressure inserts the push rod that detects the valve end face in the hole when the roof pressure cylinder bounces back but web joint is provided with.

3. the airtight pick-up unit of a kind of valve face according to claim 2, it is characterized in that described its also comprises a roof pressure servicing unit, this roof pressure servicing unit comprises that a pivot plate and that is hubbed on the worktable drives cylinder, one end of described pivot plate is hinged with the cylinder rod that drives cylinder, but the other end is provided with the jacking block of roof pressure at the push rod end face.

4. according to claim 1 or the airtight pick-up unit of 2 or 3 described a kind of valve faces, it is characterized in that being equipped with on the described worktable an airtight detection oil pipe, the outlet of airtight detection oil pipe is corresponding with the position of detecting the hole.

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