CN218938067U

CN218938067U - Air permeability check out test set of tube-shape gypsum spare

Info

Publication number: CN218938067U
Application number: CN202223091724.0U
Authority: CN
Inventors: 韩桂强; 李辰; 徐菊; 王祥; 王辉; 杜娟
Original assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Current assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-28
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses a detection device for the air permeability of a cylindrical gypsum piece, which belongs to the technical field of compressors and comprises a base, wherein a sealing cavity is arranged on the base, a supporting body is arranged in the sealing cavity, and the cylindrical gypsum piece can be placed on the supporting body; an air inlet connecting channel and a testing channel are arranged on one side of the sealing cavity, the testing channel is connected with a pressure testing device, and the air inlet connecting channel is connected with an air inlet device; a lifting upper cover is arranged above the sealing cavity, a sealing gasket is arranged at the bottom of the upper cover, a negative pressure channel is arranged on the upper cover, one end of the negative pressure channel is positioned at the bottom of the upper cover, and the other end of the negative pressure channel is positioned above the upper cover and is connected with a vacuumizing device; the sealing gasket at the bottom of the upper cover can simultaneously contact the upper top surface of the cylindrical gypsum piece and the upper top surface of the sealing cavity after the upper cover descends, and the vacuumizing equipment is communicated with the cylindrical gypsum piece through a negative pressure channel. According to the utility model, through the structure, the air permeability of the gypsum piece can be detected in advance, and the quality judgment of castings is not needed.

Description

Air permeability check out test set of tube-shape gypsum spare

Technical Field

The utility model relates to the field of detection devices, in particular to a tubular gypsum piece air permeability detection device.

Background

The gypsum type precision casting has the advantages of high precision, good surface quality and the like, but the casting still has the defect of air holes, and the finished casting material is greatly restricted.

The defects of the casting air holes are tightly connected with the air permeability of the gypsum, if the high-temperature gas generation and the gas precipitation of the metal liquid of the gypsum type cannot be removed in time, the air holes can be formed on the surface or under the surface layer of the casting. The repair welding treatment or scrapping is selected according to the severity and the appearance position of the air hole, so that the production cost is increased.

The gypsum air permeability can be adjusted through multiple modes, and because gypsum type air permeability is poor, conventional air permeability detector can't survey, can only judge according to the casting result, consequently causes unnecessary waste.

In order to solve the problems in the prior art, the utility model designs and manufactures a tubular gypsum piece air permeability detection device to overcome the defects.

Disclosure of Invention

For the problems in the prior art, the cylindrical gypsum piece air permeability detection equipment provided by the utility model can detect the air permeability of the gypsum piece in advance without judging the quality of castings.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the air permeability detection equipment for the cylindrical gypsum piece comprises a base, wherein a sealing cavity is arranged on the base, a supporting body is arranged in the sealing cavity, and the cylindrical gypsum piece can be placed on the supporting body;

an air inlet connecting channel and a test channel are arranged on one side of the sealing cavity, the test channel is connected with a pressure test device, and the air inlet connecting channel is connected with an air inlet device;

the sealing cavity is characterized in that a lifting upper cover is arranged above the sealing cavity, a sealing gasket is arranged at the bottom of the upper cover, a negative pressure channel is arranged on the upper cover, one end of the negative pressure channel is positioned at the bottom of the upper cover, and the other end of the negative pressure channel is positioned above the upper cover and connected with a vacuumizing device;

the sealing gasket at the bottom of the upper cover can simultaneously contact the upper top surface of the cylindrical gypsum piece and the upper top surface of the sealing cavity after the upper cover descends, and the vacuumizing equipment is communicated with the cylindrical gypsum piece through a negative pressure channel.

Preferably, a first contact sensing device is arranged on the upper top surface of the sealing cavity.

Preferably, a second contact sensing device is arranged at the bottom of the sealing gasket corresponding to the bottom of the upper cover of the cylindrical gypsum piece.

Preferably, the support body is provided as a liftable platform.

Preferably, a third contact sensing device is arranged on the upper top surface of the liftable platform.

Preferably, a support is arranged on the base, a lifting driving device is arranged on the support, and the lifting driving device is connected with the upper cover.

Preferably, the minimum dimension of the upper cover is larger than the maximum dimension of the top of the sealing cavity.

Preferably, a cross beam is arranged on the bracket, and the lifting driving device can horizontally move on the cross beam.

Preferably, the cross beam is provided with a limiting piece, and the limiting piece can limit the moving position of the lifting driving device.

Preferably, a fourth contact sensing device is arranged on the limiting piece.

The utility model has the advantages that:

1. in the process of casting development, the quality of gypsum performance is not required to be judged through casting quality, and the gypsum piece can be judged in advance through the equipment, so that the process is improved.

2. The utility model uses the negative pressure channel on the upper cover to communicate with the tubular gypsum piece for vacuumizing, and then introduces gas into the sealing cavity to observe the numerical change of the pressure in the sealing cavity, thereby judging the tightness of the tubular gypsum piece, having high detection efficiency and simple method, and being capable of realizing batch detection.

Drawings

FIG. 1 is a schematic diagram of a device for detecting air permeability of a tubular gypsum piece.

In the figure: 1-base, 2-support, 3-supporter, 4-sealed cavity, 5-inlet connection passageway, 6-test channel, 7-tube-shape gypsum spare, 8-first contact induction system, 9-sealing pad, 10-upper cover, 11-negative pressure passageway, 12-second contact induction system, 13-lift drive, 14-locating part.

Detailed Description

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

As shown in fig. 1, the air permeability detection device for the cylindrical gypsum piece comprises a base 1, wherein a sealing cavity 4 is arranged on the base 1, a supporting body 3 is arranged in the sealing cavity 4, the cylindrical gypsum piece 7 can be placed on the supporting body 3, the supporting body 3 is preferably arranged as a liftable platform, and a third contact induction device is arranged on the upper top surface of the liftable platform so as to conveniently detect whether the gypsum piece is placed or not, and the automatic control is convenient to realize;

according to the utility model, one side of a sealing cavity 4 is provided with an air inlet connecting channel 5 and a testing channel 6, the testing channel 6 is connected with a pressure testing device, the air inlet connecting channel 5 is connected with the air inlet device, a liftable upper cover 10 is arranged above the sealing cavity 4, the minimum size of the upper cover 10 is larger than the maximum size of the top of the sealing cavity 4, a sealing gasket 9 is arranged at the bottom of the upper cover 10, a negative pressure channel 11 is arranged on the upper cover 10, one end of the negative pressure channel 11 is positioned at the bottom of the upper cover 10, the other end of the negative pressure channel 11 is positioned above the upper cover 10 and is connected with a vacuumizing device, after the upper cover 10 descends, the sealing gasket 9 at the bottom of the upper cover 10 can simultaneously contact the upper top surface of a cylindrical gypsum piece 7 and the upper top surface of the sealing cavity 4, the vacuumizing device is communicated with the cylindrical gypsum piece 7 through the negative pressure channel 11 and then vacuumizes, and then gas is introduced into the sealing cavity 4 through the air inlet connecting channel 5, and the pressure testing device observes the numerical value change of the pressure in the sealing cavity 4, so that the tightness of the cylindrical gypsum piece 7 is judged, the detection efficiency is high, and the method is simple, and the aim of realizing batch detection is achieved.

In order to ensure the tightness of the sealed cavity 4, a first contact sensing device 8 is arranged on the upper top surface of the sealed cavity 4, so as to judge whether the upper cover 10 seals the sealed cavity 4; a second contact sensing device 12 is provided at the bottom of the gasket 9 corresponding to the bottom of the upper cover 10 of the tubular gypsum member 7, thereby judging whether the upper cover 10 closes the tubular gypsum member 7.

The base 1 is provided with a support 2, the support 2 is provided with a lifting driving device 13, the lifting driving device 13 is connected with the upper cover 10 and can drive the upper cover 10 to move up and down, in order to reduce the lifting stroke of the lifting driving device 13 and simultaneously facilitate the gypsum piece to be placed on the support body 3 of the sealing cavity 4.

The specific controller is preferably a PLC, the PLC is in signal connection with the first contact sensing device 8, the second contact sensing device 12, the third contact sensing device, the fourth contact sensing device, the liftable platform, the pressure testing device, the air inlet device, the vacuumizing equipment and the lifting driving device 13, and the PLC receives signals transmitted by the contact sensing devices and controls the actions of related devices and equipment

The working process comprises the following steps:

when the cylindrical gypsum piece 7 is placed, the upper cover 10 is moved to the side far away from the sealing cavity 4 along the cross beam, the cylindrical gypsum piece 7 is placed on the supporting body 3, then a third contact sensing device on the supporting body 3 transmits signals to the PLC, the upper cover 10 is moved to the upper part of the sealing cavity 4 along the cross beam until the limiting piece 14 is touched, a fourth contact sensing device on the limiting piece 14 transmits signals to the PLC, and the PLC controls the lifting driving device 13 to drive the upper cover 10 to move downwards until the bottom surface of the upper cover 10 contacts the upper end of the sealing cavity 4;

the first contact sensing device 8 senses that the upper cover 10 falls down, then signals are transmitted to the PLC controller, the PLC controller controls the lifting driving device 13 to stop moving downwards, and simultaneously controls the lifting platform to move upwards until the top of the cylindrical gypsum piece 7 contacts the bottom of the upper cover 10, the second contact sensing device 12 at the bottom of the upper cover 10 transmits signals to the PLC controller, and the PLC controller controls the lifting platform to stop moving upwards;

at this time, the air in the hollow part of the tubular gypsum piece 7 is pumped by the vacuumizing device of the upper cover 10 to be in a negative pressure state, and then the air is inflated inwards through the air inlet connecting channel 5 on the wall of the sealing cavity 4, so that the pressure in the space outside the gypsum piece in the sealing cavity 4 is increased, the pressure is displayed by the pressure testing device on the wall of the sealing cavity 4, and then the change of the internal pressure is displayed by the pressure testing device along with the time extension, so that the related numerical value is obtained to judge and improve the process in advance.

It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of protection defined in the claims appended hereto.

Claims

1. The air permeability detection equipment for the cylindrical gypsum piece is characterized by comprising a base, wherein a sealing cavity is arranged on the base, a supporting body is arranged in the sealing cavity, and the cylindrical gypsum piece can be placed on the supporting body;

2. The apparatus for detecting air permeability of a tubular gypsum piece according to claim 1, wherein the upper top surface of the sealing chamber is provided with a first contact sensing device.

3. The apparatus according to claim 2, wherein a second contact sensing means is provided at a bottom of the gasket corresponding to a bottom of the upper cover of the tubular gypsum member.

4. The apparatus according to claim 1, wherein the support is provided as a liftable platform.

5. The apparatus of claim 4, wherein the third contact sensing means is provided on the upper top surface of the liftable platform.

6. The apparatus according to claim 1, wherein a bracket is provided on the base, and a lifting driving device is provided on the bracket, and the lifting driving device is connected with the upper cover.

7. The apparatus for detecting air permeability of a tubular gypsum piece according to claim 1, wherein the minimum dimension of the upper cover is larger than the maximum dimension of the top of the sealed cavity.

8. The apparatus according to claim 6, wherein the bracket is provided with a cross member, and the elevation driving means is horizontally movable on the cross member.

9. The apparatus according to claim 8, wherein the cross member is provided with a stopper capable of restricting the movement position of the lifting drive device.

10. The apparatus for detecting air permeability of tubular gypsum piece according to claim 9, wherein the limiting member is provided with a fourth contact sensing device.