CN207975270U - A kind of pneumatic control extension upward type bottom valve - Google Patents

Abstract

The utility model discloses a kind of pneumatic control extension upward type bottom valves, are related to extension upward type bottom valve field, it is intended to solve the problems, such as that traditional extension upward type bottom valve safety is low.Its drip irrigation device includes spool, valve seat and the valve body being connect with valve seat, and the spool includes the valve rod that can be contacted with valve seat and the valve rod being connect with valve rod；The valve rod sequentially passes through valve seat and valve body, and the one end for protruding from valve body is connected with can control the pneumatic diaphragn actuating mechanism that valve rod moves reciprocatingly.The utility model has achieved the effect that safety can be improved.

Description

A kind of pneumatic control extension upward type bottom valve

Technical field

The utility model is related to extension upward type bottom valves, more specifically, it relates to a kind of pneumatic control extension upward type bottom valve.

Background technology

Extension upward type bottom valve is mainly used for the bottom discharging of reactor, storage tank and other containers, by means of valve bottom method Orchid is welded in the bottom of storage tank and other containers.

Existing notification number is that the Chinese patent of CN203395228U discloses a kind of extension upward type bottom valve, including valve body, valve Bar, flap and handwheel, valve rod are located in valve body, and flap is connected mounted on body top with valve rod, and handwheel is mounted on valve body bottom Portion is connected with valve rod.

But container occurs leakage or when there is contingency, can be endangered by rotating handwheel to close extension upward type bottom valve And the personal safety of personnel, this problems demand solve.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of pneumatic control extension upward type bottoms Valve has the advantage that can improve safety.

To achieve the above object, the utility model provides following technical solution：

A kind of pneumatic control extension upward type bottom valve, including spool, valve seat and the valve body being connect with valve seat, feature exist In：The spool includes the valve rod that can be contacted with valve seat and the valve rod being connect with valve rod；The valve rod sequentially passes through valve seat And valve body, and the one end for protruding from valve body is connected with can control the pneumatic diaphragn actuating mechanism that valve rod moves reciprocatingly.

By using above-mentioned technical proposal, it is common pneumatic actuator that air bladder, which executes structure, and it is fixed to receive The 20-100KPa standard signal pressure of position device or electropneumatic transducer, band movable valve plug act, and realize adjustment process；It is then pneumatic thin Film executing agency can control valve rod and move reciprocatingly, and then can control contact of the valve rod with valve seat or detach, to realize Bottom valve closes or opens；Pneumatic diaphragn actuating mechanism can be by control centre's remote control, into without personnel on site Operation, so as to improve the safety of bottom valve.

Further, the pneumatic diaphragn actuating mechanism includes push rod and the holder that is connect with valve body, the push rod with Valve rod is connected by fastening assembly.

By using above-mentioned technical proposal, the holder of pneumatic diaphragn actuating mechanism is connect with valve body, can be conveniently pneumatic thin Film executing agency controls bottom valve；Push rod is able to carry out stretching motion, and push rod is connect with valve rod by fastening assembly, from And valve rod can be controlled and moved back and forth；Push rod is connect with valve rod by fastening assembly, can be facilitated and be executed to air bladder Mechanism is replaced or is overhauled.

Further, the fastening assembly includes two in the fastening plates of mirror image setting and is threaded through tight in fastening plates Fixing bolt component offers the first card slot and the second card slot with valve rod and push rod cooperation in the fastening plates respectively.

By using above-mentioned technical proposal, valve rod is embedded between two the first card slots, and push rod is embedded to be blocked at two second Between slot, fastening bolt component can fasten two fastening plates, and then can be bonded valve rod and push rod.

Further, it is embedded with the first non-slip mat and the second non-slip mat respectively in first card slot and the second card slot.

By using above-mentioned technical proposal, the first non-slip mat can increase the frictional force between fastening plates and valve rod, and second Non-slip mat can increase the frictional force between fastening plates and push rod, and then can increase the stability that valve rod is connect with push rod, from And the stability of pneumatic diaphragn actuating mechanism control can be increased.

Further, several first skid resistance strips have been uniformly arranged on the side wall that the valve rod is contacted with the first non-slip mat, Several second skid resistance strips have been uniformly arranged on the side wall that the push rod is contacted with the second non-slip mat.

By using above-mentioned technical proposal, the first skid resistance strip can increase the friction between valve rod and the first non-slip mat Power, the second skid resistance strip can increase the frictional force between push rod and the second non-slip mat, and then can increase valve rod and connect with push rod The stability connect, so as to increase the stability of pneumatic diaphragn actuating mechanism control.

Further, it is provided with stroke indicator in the fastening plates, is provided on the holder and matches with stroke indicator The stroke indicator scale of conjunction.

By using above-mentioned technical proposal, stroke indicator can facilitate the fortune of adjustment valve rod with the cooperation of stroke indicator scale Dynamic scalar, so as to improve the stability of pneumatic diaphragn actuating mechanism control.

Further, be provided with the first annular conical surface on the valve rod, on the valve seat setting contacted with the first annular conical surface Second annular conical surface.

By using above-mentioned technical proposal, on the one hand the first annular conical surface and the cooperation of the second annular conical surface can facilitate valve rod and valve Seated connection touches or separation, on the other hand can increase the leakproofness that valve rod is contacted with valve seat, so as to increase the peace of bottom valve Quan Xing.

Further, it is coated with sealing film on the valve rod.

By using above-mentioned technical proposal, sealing film can increase the leakproofness that valve rod is contacted with valve seat, so as to Increase the safety of bottom valve.

In conclusion the utility model has the advantages that：

1, pneumatic diaphragn actuating mechanism is used, to generate the effect that can improve safety；

2, the first non-slip mat and the second non-slip mat are used, to generate the effect for increasing valve rod and push rod stable connection Fruit；

3, the first annular conical surface, the second annular conical surface and sealing film are used, to generate the effect that can improve safety.

Description of the drawings

Fig. 1 is a kind of overall structure diagram of pneumatic control extension upward type bottom valve in embodiment；

Fig. 2 is the sectional view of valve body, valve seat and spool in embodiment；

Fig. 3 is the enlarged diagram of part B in Fig. 2；

Fig. 4 is the exploded perspective view of valve rod, push rod and fastening assembly in embodiment；

Fig. 5 is the enlarged diagram of part A in Fig. 1；

Fig. 6 is the structural schematic diagram of stroke indicator scale and holder in embodiment.

In figure：1, valve body；2, valve seat；21, the second annular conical surface；3, spool；31, valve rod；311, the first annular conical surface；32, valve Bar；321, the first skid resistance strip；4, pneumatic diaphragn actuating mechanism；41, membrane cover；42, holder；43, push rod；431, the second tread plate Line；5, fastening assembly；51, fastening plates；511, the first card slot；512, the second card slot；513, the first non-slip mat；514, second is anti-skidding Pad；52, fastening bolt component；6, stroke indicator；61, stroke indicator scale；611, fixing groove；62, fixed plate；621, fixed Bolt；622, fixing nut；7, sealing film.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Embodiment：

A kind of pneumatic control extension upward type bottom valve, referring to Fig.1 comprising valve body 1, valve seat 2 and spool 3, in the present embodiment Valve body 1 is connect with valve seat 2 by six bolt and nut components；Spool 3 passes through valve body 1 and valve seat 2, and 3 one end of spool and valve seat 2 It abuts, the other end protrudes from valve body 1.

Referring to Fig.1, spool 3 protrudes from one end of valve body 1 and is connected with pneumatic diaphragn actuating mechanism 4, and air bladder executes machine Structure 4 includes membrane cover 41, holder 42 and push rod 43；42 one end of holder is fixedly connected with membrane cover 41, and the other end is connect with valve body 1, and Holder 42 is connect with valve body 1 by four bolt and nut components in the present embodiment；Push rod 43 can do flexible relative to membrane cover 41 Movement, and push rod 43 is connect with spool 3 by fastening assembly 5；Pneumatic diaphragn actuating mechanism 4 is arranged in membrane cover 41 in the present embodiment Interior structure, such as pressurize connector, diaphragm, actuator spring, spring base and spring adjustor, do not show in this attached drawing Go out.

With reference to Fig. 2, spool 3 includes valve rod 31 and valve rod 32, and valve rod 31 is abutted with 2 opening of valve seat, and valve rod 32 passes through valve Seat 2 and valve body 1, and the one end of valve rod 32 far from valve rod 31 protrudes from valve body 1；3 outer wall of spool, valve seat 2 are in circle in the present embodiment The inside and outside wall and 1 inner wall of valve body of column casing part are both provided with sealing film 7, and 7 material of sealing film is polytetrafluoroethylene (PTFE).

With reference to Fig. 3, it is provided with the first annular conical surface 311 on valve rod 31, is provided on valve seat 2 and coordinates with the first annular conical surface 311 The second annular conical surface 21；It is both provided with sealing film 7 on the first annular conical surface 311 and the second annular conical surface 21 in the present embodiment, is sealed 7 material of film is polytetrafluoroethylene (PTFE), with good leakproofness, and then can improve the first annular conical surface 311 and the second ring cone Leakproofness between face 21.

With reference to Fig. 4, fastening assembly 5 includes two in the fastening plates 51 of mirror image setting and for connecting two fastening plates 51 The fastening bolt component 52 connect, the quantity of fastening bolt component 52 is two in the present embodiment；It is offered respectively in fastening plates 51 The first card slot 511 and the second card slot 512 coordinated with valve rod 32 and push rod 43, valve rod 32 and push rod 43 and fastening in the present embodiment The section diameter that plate 51 contacts is identical, then the first card slot 511 is identical with 512 internal diameter of the second card slot.

With reference to Fig. 4, it is embedded with the first non-slip mat 513 and the second non-slip mat respectively in the first card slot 511 and the second card slot 512 514,514 equal preferred rubber pad of the first non-slip mat 513 and the second non-slip mat；The part that valve rod 32 is contacted with the first non-slip mat 513 Uniformly distributed protrusion is provided with several first skid resistance strips 321, if the part that push rod 43 is contacted with the second non-slip mat 514 has been uniformly arranged Dry second skid resistance strip 431.

With reference to Fig. 5, end face of any fastening plates 51 far from valve rod 32 is provided with stroke indicator 6, holder in the present embodiment The stroke indicator scale 61 opposite with stroke indicator 6 is provided on 42, stroke indicator scale 61 passes through fixed plate with holder 42 62 connections.

With reference to Fig. 6, fixed plate 62 is fixedly connected with holder 42, and there are two fixing bolt 621, strokes for setting in fixed plate 62 The fixing groove 611 coordinated with fixing bolt 621 is offered on indicator scale 61；It is installed on fixing bolt 621 and is indicated with stroke The fixing nut 622 that scale 61 contacts, and then stroke indicator scale 61 can be fixedly connected with fixed plate 62.

Operation principle is as follows：

Valve rod 32 is fastenedly connected by fastening assembly 5 and the push rod 43 of pneumatic diaphragn actuating mechanism 4, and push rod 43 can carry out Stretching motion, and then valve rod 32 can be controlled and moved back and forth, so as to control the opening or closure of bottom valve；

Pneumatic diaphragn actuating mechanism 4 can be operated, and then can carry by control centre's remote control without personnel on site The safety of high bottom valve.

Claims (8)

1. a kind of pneumatic control extension upward type bottom valve, including spool（3）, valve seat（2）And and valve seat（2）The valve body of connection（1）, It is characterized in that：The spool（3）Including can be with valve seat（2）The valve rod of contact（31）And and valve rod（31）The valve rod of connection （32）；The valve rod（32）Sequentially pass through valve seat（2）And valve body（1）, and protrude from valve body（1）One end be connected with and can control Valve rod（32）The pneumatic diaphragn actuating mechanism to move reciprocatingly（4）.

2. pneumatic control extension upward type according to claim 1 bottom valve, it is characterised in that：The pneumatic diaphragn actuating mechanism （4）Including push rod（43）And and valve body（1）The holder of connection（42）, the push rod（43）With valve rod（32）Pass through fastening assembly （5）Connection.

3. pneumatic control extension upward type according to claim 2 bottom valve, it is characterised in that：The fastening assembly（5）Including Two fastening plates in mirror image setting（51）And it is threaded through fastening plates（51）On fastening bolt component（52）, the fastening plates （51）It is upper to offer respectively and valve rod（32）And push rod（43）First card slot of cooperation（511）With the second card slot（512）.

4. pneumatic control extension upward type according to claim 3 bottom valve, it is characterised in that：First card slot（511）With Second card slot（512）It is inside embedded with the first non-slip mat respectively（513）With the second non-slip mat（514）.

5. pneumatic control extension upward type according to claim 4 bottom valve, it is characterised in that：The valve rod（32）It is anti-with first Skidding（513）Several first skid resistance strips have been uniformly arranged on the side wall of contact（321）, the push rod（43）With the second non-slip mat （514）Several second skid resistance strips have been uniformly arranged on the side wall of contact（431）.

6. the pneumatic control extension upward type bottom valve according to any claim in claim 3-5, it is characterised in that：It is described Fastening plates（51）On be provided with stroke indicator（6）, the holder（42）On be provided with and stroke indicator（6）The stroke of cooperation Indicator scale（61）.

7. the pneumatic control extension upward type bottom valve according to any claim in claim 1-5, it is characterised in that：It is described Valve rod（31）On be provided with the first annular conical surface（311）, the valve seat（2）Upper setting and the first annular conical surface（311）The second of contact Annular conical surface（21）.

8. the pneumatic control extension upward type bottom valve according to any claim in claim 1-5, it is characterised in that：It is described Valve rod（31）On be coated with sealing film（7）.