Today, I will introduce a national invention authorized patent-a double needle pressure gauge for mining. The patent was applied for by Guizhou University, and the authorization was announced on December 8, 2017.
Content descriptionThe invention relates to the technical field related to mine pressure, in particular to a dual-needle pressure gauge for mines.
Background of the inventionFor production in mines, the most worrying thing is your own life safety. Under normal circumstances, the deeper the mine, the more serious the accident caused by its collapse, and the deeper the mine, the more serious the accident. The oxygen content in the cave is also lower. In order to measure the pressure value in the mine, the mine pressure gauge was researched and invented. The pressure gauge can measure the pressure in the mine to assess the level of oxygen content in the mine. .
However, the existing mining pressure gauge does not have a heat dissipation device, which makes the mining pressure gauge use in an environment higher than its normal use temperature, which will cause relatively large errors.
Summary of the inventionThe purpose of the present invention is to provide a dual-needle pressure gauge for mining to solve the problem that the existing pressure gauge for mining proposed in the background art does not have a heat dissipation device.
In order to achieve the above objective, the present invention provides the following technical solutions: a dual needle pressure gauge for mining, including a protective shell, a watch body is installed inside the protective shell, and a watch cover is connected to the upper end of the watch body, and a watch cover is installed inside the watch cover. Tempered glass, a dial is arranged under the tempered glass, a first connecting tube is connected to the outer side of the watch body, a key hole is provided on the outer surface of the first connecting tube, and a second connecting tube is connected to the outer end of the first connecting tube, And the outer surface of the second connecting pipe is provided with a lock block, the protective shell is connected to the watch body through the connecting hole, and the inner surface of the connecting hole is connected with a sealing screw, and the outer surface of the sealing screw and the inner surface of the connecting hole are both provided with a rubber ring , The lower surface of the watch body is connected with an ice bag.
The lower surface of the protective shell has a porous structure, and the protective shell is connected with the watch body through an ice bag. The tempered glass is connected to the watch cover by bonding, and the height of the watch cover is greater than the height of the tempered glass. The surface of the dial is made of phosphor, and the dial is connected to the cover by inlay. The second connecting pipe has a telescopic structure, and the outer surface of the second connecting pipe has a threaded structure. The sealing screw is connected with the connecting hole in a threaded connection, and the sealing screw and the connecting hole form a sealing structure.
Compared with the prior art, the beneficial effect of the present invention is that the dual-needle pressure gauge for mining adopts the design of the dial, the second connecting tube, the sealing screw and the ice pack, and the dial made of phosphor material is beneficial for users in dim underground mines. Used in the hole, it is convenient for the user to see the value indicated by the pointer. The retractable second connecting pipe can protect the sensitive pressure sensor when the pressure gauge is not in use, and can make the pressure sensor and the pressure gauge be in contact with the pressure gauge when the pressure gauge is in use. Adequate air contact is beneficial to increase the measurement accuracy of the pressure gauge. The sealing screw can solve the problem that the temperature in the mine is too high, the pointer of the pressure gauge does not return to zero or the displayed value is out of tolerance, and avoids directly cutting the sealing rubber in the past. This causes unnecessary waste of resources. The ice bag can balance the temperature of the pressure gauge, facilitate its heat dissipation, and facilitate the normal use of the pressure gauge.
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