CN208024854U - Pneumatic chlorine cast steel stop valve - Google Patents

Abstract

The utility model discloses a kind of pneumatic chlorine cast steel stop valves, including：Cast steel valve body, the lower end of the cast steel valve body is provided with intake channel and exit passageway, the upper end of the cast steel valve body is provided with cast steel valve deck, it is provided with valve rod in the valve body, the upper end of the valve rod connects pneumatic control component, the lower end of the valve rod connects flap component, it is provided with airtight and watertight padding and pressing plate between valve rod and cast steel valve deck, it is equipped with bellows in the hypomere outer sheath of valve rod, one end of the bellows is welded on cast-steel valve and covers, the other end of the bellows is welded on valve rod, and the pneumatic control component includes：Pneumatic actuator, filtering pressure reducing valve, solenoid valve and flange bracket, the upper end of the valve rod is connected with pneumatic actuator, the filtering pressure reducing valve and solenoid valve are fixed on pneumatic actuator, and the filtering pressure reducing valve is connected by the first air inlet pipe with solenoid valve.

Description

Pneumatic chlorine cast steel stop valve

Technical field

The utility model is related to a kind of valve more particularly to a kind of pneumatic chlorine cast steel stop valves.

Background technology

Chlorine cutoff valve is a kind of common valve for controlling and adjusting the deep-etchings flow media such as chlorine in chemical industry Door.Existing chlorine ends：Valve body is provided with intake channel and exit passageway, in institute in the lower end of the valve body The upper end for stating valve body is provided with valve deck, valve rod is provided in the valve body, the upper end of the valve rod connects hand wheel component, described The lower end of valve rod connects flap component, airtight and watertight padding and pressing plate is provided between valve rod and cast steel valve deck, in the hypomere of valve rod Outer sheath is equipped with bellows, and one end of the bellows is welded on cast-steel valve and covers, and the other end of the bellows is welded on valve On bar.Existing chlorine cutoff valve is all that could realize the opening and closing of valve by manually pulling hand wheel component, automation Degree is low, and labor intensity is big, meanwhile, existing chlorine cutoff valve flap be structure as a whole with valve rod it is non-dismountable, on flap Gasket is also non-exchange, once damaging, valve will directly be scrapped for flap or gasket.

Utility model content

Technical problem to be solved in the utility model is：A kind of pneumatic chlorine cast steel cut-off of high degree of automation is provided Valve.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：Pneumatic chlorine cast steel stop valve, packet It includes：Cast steel valve body is provided with intake channel and exit passageway, in the upper end of the cast steel valve body in the lower end of the cast steel valve body It is provided with cast steel valve deck, valve rod is provided in the valve body, the upper end of the valve rod connects pneumatic control component, the valve rod Lower end connect flap component, airtight and watertight padding and pressing plate are provided between valve rod and cast steel valve deck, on the outside of the hypomere of valve rod It is arranged with bellows, one end of the bellows is welded on cast-steel valve and covers, and the other end of the bellows is welded on valve rod, The pneumatic control component includes：Pneumatic actuator, filtering pressure reducing valve, solenoid valve and flange bracket, the upper end of the valve rod with Pneumatic actuator is connected, and the filtering pressure reducing valve and solenoid valve are fixed on pneumatic actuator, the filtering pressure reducing valve It is connected with solenoid valve by the first air inlet pipe, the solenoid valve is connected by the second air inlet pipe with pneumatic actuator, described Flange bracket is fixed at the lower end of pneumatic actuator, and the flange bracket is connected by column with cast steel valve deck, in institute State be provided on valve rod with the mutually matched guide plate of column, be provided on the flange bracket mutually matched with guide plate Limit switch, is provided with bushing between the pressing plate, valve rod and airtight and watertight padding, and the flap component includes：Flap and flap Nut is provided with mounting groove on the flap, is provided in the lower end of the valve rod and is connect with the mutually matched T-type of mounting groove Head, T-type connection head is fixed on by flap nut in mounting groove to be fixedly connected with flap, in the flap and flap It is provided with flap gasket between nut, is provided on the forged steel valve body between the intake channel and exit passageway and flap phase The valve port mutually coordinated, is provided with soft seal ring on the contact surface of the flap and valve port, and the soft seal ring passes through retaining ring It is fastened on flap, the retaining ring is threadedly coupled with flap, method in being provided between the cast steel valve body and cast steel valve deck Blue gasket.

The utility model has the advantages that：Above-mentioned pneumatic chlorine cast steel stop valve, valve body are designed using cast steel, can be suitable for The heavy caliber of 20cm~150cm conveys, meanwhile, it is capable to be controlled external air source in 4bar sizes by filtering pressure reducing valve, passes through The switch of the switch drive valve rod and flap of solenoid valve Pneumatic automatic-control actuator, to realize the open and close of valve, High degree of automation reduces the labor intensity of worker, in addition, the connection between flap and valve rod can dismantle completely, it is soft close Connection between seal ring and flap can also dismantle completely, and easy maintenance and replacement improves the service life of valve.

Description of the drawings

Fig. 1 is the structural schematic diagram of the pneumatic chlorine cast steel stop valve of the utility model.

Fig. 2 is the right side structural representation of Fig. 1.

In figure：1, cast steel valve body, 2, intake channel, 3, exit passageway, 4, cast steel valve deck, 5, valve rod, 6, airtight and watertight padding, 7, Pressing plate, 8, bellows, 9, pneumatic actuator, 10, filtering pressure reducing valve, 11, solenoid valve, 12, flange bracket, the 13, first air inlet pipe, 14, the second air inlet pipe, 15, column, 16, guide plate, 17, limit switch, 18, bushing, 19, flap, 20, flap nut, 21, T Type connects head, and 22, flap gasket, 23, soft seal ring, 24, retaining ring, 25, middle flange gasket.

Specific implementation mode

The particular content of the utility model is described in detail in the following with reference to the drawings and specific embodiments.

As shown in Figure 1 and Figure 2, pneumatic chlorine cast steel stop valve, including：Cast steel valve body 1, in the lower end of the cast steel valve body 1 It is provided with intake channel 2 and exit passageway 3, the upper end of the cast steel valve body 1 is provided with cast steel valve deck 4, in the valve body 1 It is provided with valve rod 5, the upper end of the valve rod 5 connects pneumatic control component, and the lower end of the valve rod 5 connects flap component, in valve It is provided with airtight and watertight padding 6 and pressing plate 7 between bar 5 and cast steel valve deck 4, bellows 8 is equipped in the hypomere outer sheath of valve rod 5, it is described One end of bellows 8 is welded on cast steel valve deck 4, and the other end of the bellows 8 is welded on valve rod 5, the pneumatic control Component includes：Pneumatic actuator 9, filtering pressure reducing valve 10, solenoid valve 11 and flange bracket 12, the upper end of the valve rod 5 with it is pneumatic Actuator 9 is connected, and the filtering pressure reducing valve 10 and solenoid valve 11 are fixed on pneumatic actuator 9, the filtering decompression Valve 10 is connected by the first air inlet pipe 13 with solenoid valve 11, and the solenoid valve 11 passes through the second air inlet pipe 14 and pneumatic actuator 9 are connected, and the flange bracket 11 is fixed at the lower end of pneumatic actuator 9, the flange bracket 11 by column 15 with Cast steel valve deck 4 is connected, be provided on the valve rod 5 with 15 mutually matched guide plate 16 of column, in the flange bracket Be provided on 11 with 16 mutually matched limit switch 17 of guide plate, be arranged between the pressing plate 7, valve rod 5 and airtight and watertight padding 6 There are the bushing 18, the flap component to include：Flap 19 and flap nut 20, mounting groove is provided on the flap 19, in institute The lower end for stating valve rod 5 is provided with and connect head 21 with the mutually matched T-type of mounting groove, and T-type connection head 21 passes through flap Nut 20 is fixed in mounting groove and is fixedly connected with flap 19, and flap pad is provided between the flap 19 and flap nut 20 Piece 22, be provided on the forged steel valve body 1 between the intake channel 2 and exit passageway 3 with 19 mutually matched valve port of flap, It is provided with soft seal ring 23 on the contact surface of the flap 19 and valve port, the soft seal ring 23 is fastened on by retaining ring 24 On flap 19, the retaining ring 24 is threadedly coupled with flap 19, in being provided between the cast steel valve body 1 and cast steel valve deck 4 Flange gasket 25.

Above-mentioned pneumatic chlorine cast steel stop valve in use, filtering pressure reducing valve 10 is connected with external air supply source air compressor machine, Filtering pressure reducing valve 10 can control air source in 4bar sizes, open solenoid valve 11, and air source passes through 13 He of the first air inlet pipe successively Second air inlet pipe 14 enters in pneumatic actuator 9, and it is upward to open band ovable valve stem 5 for pneumatic actuator 9 under the action of gas pressure Mobile, valve rod 5 connects head 21 by T-type and flap 19 is driven to be detached with valve port, at this point, intake channel 2 is mutual with exit passageway 3 Connection conveys chlorine；Solenoid valve 11 is closed, air source is blocked between the first air inlet pipe 13 and the second air inlet pipe 14, gas Dynamic actuator 9 is not moved down by bleed pressure reset strap ovable valve stem 5, valve rod 5 by T-type connect head 21 drive flap 19 with Valve port offsets, and can not be connected at this point, intake channel 2 is cut off with exit passageway 3.

Above-mentioned pneumatic chlorine cast steel stop valve, valve body are designed using cast steel, can be suitable for the heavy caliber of 20cm~150cm Conveying is held meanwhile, it is capable to be controlled external air source in 4bar sizes by filtering pressure reducing valve by solenoid valve Pneumatic automatic-control The switch drive valve rod of row device and the switch of flap, to realize that the open and close of valve, high degree of automation reduce work The labor intensity of people, in addition, the connection between flap and valve rod can dismantle completely, the connection between soft seal ring and flap It can dismantle completely, easy maintenance and replacement, improve the service life of valve.

Claims (1)

1. pneumatic chlorine cast steel stop valve, it is characterised in that：Including：Cast steel valve body（1）, in the cast steel valve body（1）Lower end It is provided with intake channel（2）And exit passageway（3）, in the cast steel valve body（1）Upper end be provided with cast steel valve deck（4）, institute State valve body（1）Inside it is provided with valve rod（5）, the valve rod（5）Upper end connect pneumatic control component, the valve rod（5）Lower end Flap component is connected, in valve rod（5）With cast steel valve deck（4）Between be provided with airtight and watertight padding（6）And pressing plate（7）, in valve rod（5）'s Hypomere outer sheath is equipped with bellows（8）, the bellows（8）One end be welded on cast steel valve deck（4）On, the bellows（8） The other end be welded on valve rod（5）On, the pneumatic control component includes：Pneumatic actuator（9）, filtering pressure reducing valve（10）, electricity Magnet valve（11）And flange bracket（12）, the valve rod（5）Upper end and pneumatic actuator（9）It is connected, the filtering pressure reducing valve （10）And solenoid valve（11）It is fixed at pneumatic actuator（9）On, the filtering pressure reducing valve（10）Pass through the first air inlet pipe （13）With solenoid valve（11）It is connected, the solenoid valve（11）Pass through the second air inlet pipe（14）With pneumatic actuator（9）It is connected, The flange bracket（12）It is fixed at pneumatic actuator（9）Lower end, the flange bracket（12）Pass through column（15）With Cast steel valve deck（4）It is connected, in the valve rod（5）On be provided with and column（15）Mutually matched guide plate（16）, described Flange bracket（12）On be provided with and guide plate（16）Mutually matched limit switch（17）, in the pressing plate（7）, valve rod（5） And airtight and watertight padding（6）Between be provided with bushing（18）, the flap component includes：Flap（19）With flap nut（20）, institute State flap（19）On be provided with mounting groove, in the valve rod（5）Lower end be provided with and the mutually matched T-type connector of mounting groove Portion（21）, T-type connection head（21）Pass through flap nut（20）It is fixed in mounting groove and flap（19）It is fixedly connected, The flap（19）With flap nut（20）Between be provided with flap gasket（22）, in the intake channel（2）And exit passageway （3）Between forged steel valve body（1）On be provided with and flap（19）Mutually matched valve port, in the flap（19）With connecing for valve port Soft seal ring is provided in contacting surface（23）, the soft seal ring（23）Pass through retaining ring（24）It is fastened on flap（19）On, it is described Retaining ring（24）With flap（19）It is threadedly coupled, in the cast steel valve body（1）With cast steel valve deck（4）Between be provided with middle flange gasket Piece（25）.