The density monitor of band control valve Connection Block
Affiliated technical field
The utility model relates to a kind of density monitor that has the control valve Connection Block.
Background technology
Existing density monitor is directly installed on the pipe joint, must cut off the pipeline source of the gas when maintenance or verification, pulls down density monitor, operating difficulties.
Summary of the invention
Do not cut off the pipeline source of the gas when the purpose of this utility model provides a kind of maintenance or verification, do not need to pull down density monitor, the density monitor that has the control valve Connection Block simple to operate.
The technical solution adopted in the utility model is, 21 places are connected with valve seat 1 at the density monitor air inlet, and valve seat 1 has valve port 2, interface 3 ends to valve 4, ends to valve 5, spool 8, only be fixed on the pipe joint 6 by hex screw 16, only to valve 4 valve seat arranged, spool 12 to valve 5, spring 13 compositions such as grade, only valve seat is arranged, spool 14, spring 15 compositions such as grade to valve 5.
The beneficial effects of the utility model are that density monitor does not need to cut off the pipeline source of the gas when maintenance or verification, do not need to pull down density monitor, and is simple to operate.
Description of drawings
Fig. 1 is that the utility model axle is surveyed schematic diagram
Fig. 2 is the structural scheme of mechanism that the utility model Fig. 1 removes dial 23
Embodiment
The density monitor of band control valve Connection Block shown in Figure 1 has density monitor table body 7, and density monitor table body 7 has C shape bourdon tube 17, sensitive switch 18, pointer 19, movement 20, gas-charging connection 21, cable signal line 22, dial 23 compositions such as grade, be used for exporting the pressure of monitoring the air chamber internal gas by the pointer indication and the signal of telecommunication, valve seat 1 is arranged, valve seat 1 has valve port 2, interface 3 ends to valve 4, ends to valve 5, spool 8, spool 8 has valve rod post 9, O-ring seals 10, rubber blanket 11 is formed, only be fixed on the pipe joint 6 by hex screw 16, only to valve 4 valve seat arranged, spool 12 to valve 5, spring 13 compositions such as grade, only valve seat is arranged, spool 14, spring 15 compositions such as grade to valve 5.
Flat mouthful screwdriver inserts in the slotted eye that has on the spool 8 by valve port 2 during use, moves forward and backward by Spin Control spool 8, controls connection or partition by ending the gas circuit to valve 5.