阅读说明：本技术 防污千分表 (Anti-pollution dial gauge ) 是由 裴沛 黄欣 于 2021-01-26 设计创作，主要内容包括：本发明属于测量设备,尤其属于千分表。本发明为一种防污千分表,包括千分表,其要点在于,在千分表的外表面设置有进气口,在进气口中接有进气接头。本发明创造性地在千分表外表面设置有进气口,并接有进气接头,对千分表的内腔通入大于环境压力的干净的气体,阻止外部冷却液、润滑油等汽雾或杂质进入,使千分表能适应机加工设备加工的在线测量,保证测量精度,延长使用寿命。(The invention belongs to measuring equipment, in particular to a dial indicator. The invention relates to an antifouling dial indicator, which comprises a dial indicator and is characterized in that an air inlet is arranged on the outer surface of the dial indicator, and an air inlet joint is connected in the air inlet. The invention creatively arranges the air inlet on the outer surface of the dial indicator, is connected with the air inlet joint, and introduces clean air with the pressure higher than the environmental pressure into the inner cavity of the dial indicator to prevent vapor fog or impurities such as external cooling liquid, lubricating oil and the like from entering, so that the dial indicator can adapt to the online measurement of the machining of machining equipment, the measurement precision is ensured, and the service life is prolonged.)

1. An antifouling dial indicator comprises a dial indicator and is characterized in that an air inlet is formed in the outer surface of the dial indicator, and an air inlet joint is connected in the air inlet.

2. An anti-fouling dial gauge according to claim 1, wherein a seal ring is provided between the air inlet connector and the air inlet.

3. An anti-fouling dial gauge according to claim 1, wherein the air inlet is located on the dial gauge back cover.

4. An anti-fouling dial gauge according to claim 1, wherein the gas inlet connector is connected to the high pressure gas generating or storing device through a gas inlet pipe.

5. An anti-fouling dial gauge according to claim 4, wherein the high pressure gas is introduced at a pressure of 0.05 to 0.3 atm greater than the external pressure.

6. An anti-fouling dial gauge according to claim 5, wherein the high pressure gas is introduced at a pressure of 0.1 to 0.15 atm greater than the external pressure.

7. An anti-fouling dial gauge according to any one of claims 1 to 4, wherein the inlet connection is connected to a pressure limiting valve.

Technical Field

The invention belongs to measuring equipment, in particular to a dial indicator.

Background

The dial indicator is a commonly used measuring tool, when the dial indicator is used for online detection of machining equipment, the dial indicator is often fixed in the machining equipment, vapor fog such as cooling liquid and lubricating oil is filled in the machining equipment, the vapor fog easily permeates into the interior of the dial indicator, the interior space of the dial indicator is polluted, the transmission flexibility among various internal parts is reduced, the measuring precision is influenced, and meanwhile, the dial indicator is easy to damage and short in service life.

Disclosure of Invention

The invention aims to provide the anti-fouling dial indicator which can prevent vapor fog from entering the dial indicator, can be well suitable for online detection of machining equipment and has long service life.

The technical scheme adopted by the invention is that the anti-fouling dial indicator comprises a dial indicator and is characterized in that an air inlet is formed in the outer surface of the dial indicator, and an air inlet joint is connected in the air inlet.

The invention is improved on the basis of the existing dial indicator, the air inlet joint is arranged, because most of the existing machining equipment is in the environment, the air inlet joint and the air source can be directly connected through the air pipe, air is introduced into the dial indicator, the air pressure in the dial indicator is larger than the outside, so that the entry of vapor fog and dust such as cooling liquid, lubricating oil and the like in the outside is prevented, and the inside is kept clean.

A sealing ring is arranged between the air inlet joint and the air inlet. Preventing leakage.

The air inlet is positioned on the dial indicator rear cover. Theoretically, go up the air inlet and can be located the optional position of amesdial, the lid after this application preference.

The air inlet joint is connected with a high-pressure gas device through an air inlet pipe.

The high pressure gas is introduced to be 0.05-0.3 atm greater than the external pressure. Because the protecgulum of amesdial is buckled, pressure is too big easily with its back-up, as long as it is big than external pressure, guarantee that inside pressure can block outside material can.

The application preferably comprises the following steps: the high pressure gas is introduced to be 0.1-0.15 atm greater than the external pressure.

The air inlet joint is connected with the pressure limiting valve. The pressure of the incoming gas is regulated by a pressure limiting valve.

The invention creatively arranges the air inlet on the outer surface of the dial indicator, is connected with the air inlet joint, and introduces clean air with the pressure higher than the environmental pressure into the inner cavity of the dial indicator to prevent vapor fog or impurities such as external cooling liquid, lubricating oil and the like from entering, so that the dial indicator can adapt to the online measurement of the machining of machining equipment, the measurement precision is ensured, and the service life is prolonged.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic view of embodiment 2

Wherein: 1 dial indicator, 2 air inlet joint 3 pressure limiting valve, 4 high pressure gas generating or storing device, 5 air inlet pipe.

Detailed Description

The present invention is described in detail below with reference to the drawings, which illustrate examples that enable those skilled in the art to understand the present invention, but do not limit the present invention in any way.

Embodiment 1, as shown in fig. 1, an antifouling dial indicator is an improvement on the existing dial indicator, an air inlet is arranged on the outer surface of the dial indicator 1, the air inlet is positioned on a dial indicator rear cover, an air inlet joint 2 is connected in the air inlet, a sealing ring is arranged between the air inlet joint and the air inlet, high-pressure gas is 0.05-0.3 atmospheric pressure greater than external atmospheric pressure, and the antifouling dial indicator is preferred in the application: the high pressure gas is introduced to be 0.1-0.15 atm greater than the external pressure. The air inlet connector 2 is directly connected with the air source through a pressure limiting valve and a pipeline under the environment with the air source, the pressure limiting valve is used for adjusting and controlling the air inlet pressure, the conventional quick connector can be used as the air inlet connector, the connection between the air inlet connector and the pressure limiting valve and the connection between the air inlet connector and the pipeline belong to the conventional technology, and the pressure limiting valve and the pipeline are not drawn in the drawing. The structure of the dial indicator which is not described is the same as that of the prior art.

Example 2, as shown in fig. 2, in an environment without an air source, an air inlet connector is connected with a pressure limiting valve 3 and a high-pressure gas generating or storing device 4 (such as an air compressor and a high-pressure gas cylinder) through an air inlet pipe 5. The rest of the composition which is not described is the same as that of example 1.

The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modifications and equivalents made on the basis of the technical idea of the present invention fall within the protection scope of the present invention.