CN210510326U

CN210510326U - Control valve capable of realizing manual pressure relief and manual emergency closing

Info

Publication number: CN210510326U
Application number: CN201921272362.0U
Authority: CN
Inventors: 潘华敏; 梁先锋
Original assignee: Sichuan Xuanyuan Automatic Control Equipment Co Ltd
Current assignee: Sichuan Xuanyuan Automatic Control Equipment Co Ltd
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-05-12
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a can control valve of manual pressure release and manual emergent valve closing, the valve rod lower extreme is disappointing pipe, the diameter of disappointing pipe is less than the diameter of valve rod, be equipped with the passageway that loses heart No. one along disappointing pipe axis, radially be equipped with the passageway that loses heart No. two with passageway intercommunication that loses heart along disappointing pipe, be equipped with coaxial macropore and aperture on the valve clack, aperture and disappointing pipe cooperation, the diameter of macropore is greater than the diameter of valve rod, macropore and exhaust chamber intercommunication, disappointing pipe forms a step with the valve rod junction, macropore and aperture junction form No. two steps, radially be equipped with along the valve rod with electromagnetic component complex automatic recess and manual recess, be equipped with the hypotenuse No. one on the automatic recess, be equipped with the hypotenuse No. two on the manual recess, the inclination of. The utility model discloses it is more convenient to use, the pressure release is easier, the security is good, can effectively balance the air inlet chamber with the exhaust chamber the pressure differential, can manual emergent close the valve under the dead emergency of solenoid valve card.

Description

Control valve capable of realizing manual pressure relief and manual emergency closing

Technical Field

The utility model relates to a control valve especially relates to a but control valve of manual pressure release and manual emergent shut-off valve.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, is mainly used for adjusting the direction, flow, speed and other parameters of a medium in an industrial control system, can be matched with different circuits to realize expected control, and can ensure the control precision and flexibility. At present, all install the solenoid valve on gas pipeline, the gas stove and the gas heater, the gas solenoid valve among the prior art has following for the problem usually: the electromagnetic force generated by the electromagnetic coil is used for opening or blocking a gas passage, and the iron core on the electromagnetic component is matched with the annular groove on the valve rod, so that the phenomenon of blocking sometimes occurs, the electromagnetic valve is difficult to close quickly in emergency, and great potential safety hazard exists; generally, after the manually opened electromagnetic valve is closed in a ventilation state, air pressure acts on the valve clack, and at the moment, the valve is difficult to open by manpower, so that a pressure relief assembly needs to be designed to balance the pressure difference between the air inlet cavity and the air exhaust cavity, so that the opening force of the valve is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a use more convenient, the pressure release is easier, the security is good, can effectively balance the air inlet chamber with the exhaust chamber the pressure differential, can the control valve of manual emergency shut-off under the dead emergency of solenoid valve card.

The purpose of the utility model is realized through the following technical scheme:

a control valve capable of manually releasing pressure and manually closing a valve in an emergency manner comprises a valve body, a valve clack and a valve rod, wherein a valve cover is fixed on the valve body through bolts, the valve rod is arranged on the valve cover, the valve clack is arranged at the lower end of the valve rod, a compression spring is arranged between the valve clack and the valve cover, the valve clack divides the interior of the valve body into an air inlet cavity and an air outlet cavity, the lower end of the valve rod is an air release pipe, the diameter of the air release pipe is smaller than that of the valve rod, a first air release passage is arranged along the axis of the air release pipe, a second air release passage communicated with the first air release passage is arranged along the radial direction of the air release pipe, the first air release passage is also communicated with the air inlet cavity, coaxial large holes and small holes are arranged on the valve clack, the small holes are matched with the air release pipe, the diameter of the large holes is larger than that of the valve rod, no. two disappointing passageways do not communicate with the macropore, along the valve rod radially be equipped with electromagnetic component complex automatic recess and manual recess, be equipped with the hypotenuse No. one on the automatic recess, be equipped with the hypotenuse No. two on the manual recess, the inclination of No. two hypotenuses is greater than the inclination of a hypotenuse, automatic recess and the transition of manual recess communicate and form the ring channel.

Preferably, the electromagnetic component comprises a movable iron core and a fixed iron core which are coaxially arranged, the axis of the movable iron core is perpendicular to the axis of the valve rod, an electromagnetic coil is arranged inside the movable iron core along the axis of the movable iron core, and the movable iron core is matched with the automatic groove or the manual groove.

Preferably, one end of the movable iron core, which is matched with the automatic groove or the manual groove, is provided with a conical chamfer.

Preferably, a through pressure relief channel is further arranged inside the movable iron core along the axis of the movable iron core.

Preferably, the edge of the large hole is provided with an outward inclined conical part.

Preferably, the end part of the air release pipe is provided with a limiting part for preventing the valve rod from being separated from the valve clack, and when the limiting part is contacted with the bottom surface of the valve clack, the second air release channel is communicated with the large hole.

Preferably, the small hole is provided with a sealing ring.

The utility model has the advantages that:

(1) the utility model provides a manual emergent valve closing assembly, set up automatic recess and manual recess on the valve rod, because automatic recess forms the annular groove with manual recess transition intercommunication, when the card is dead when appearing, rotatory valve rod makes movable iron core and automatic recess cooperation gradually transition to with manual recess cooperation, and the inclination of No. two hypotenuses in the manual recess is greater than the inclination of No. one hypotenuse in the automatic recess, it is littleer to make the valve rod descend the resistance that receives, descend more easily and close the valve, in time close for the valve and provide the guarantee.

(2) Move the inside pressure release passageway that is equipped with of iron core and link up, when moving iron core tip card and advancing automatic recess or manual recess, can be sometime because cross sealed the unable discharge of automatic recess or the inside atmospheric pressure of manual recess that causes, improved the valve degree of difficulty of closing, pressure release passageway makes automatic recess or the inside atmospheric pressure of manual recess discharge in time, reduces the valve degree of difficulty of closing, makes things convenient for the quick valve of closing.

(3) The utility model provides a manual pressure release subassembly sets up the passageway of disappointing No. one on the valve rod, No. two the passageway of disappointing, when the valve clack pressurized is difficult for lifting up, make admit air chamber and exhaust chamber through the passageway of disappointing No. one, No. two the passageway of disappointing, the macropore intercommunication through lifting up the valve rod, and then balanced admit air chamber and the pressure differential in exhaust chamber, reach the pressure release purpose, moreover, the steam generator is simple in structure, convenient operation, the pressure release is more easy, avoid the valve clack pressurized to lead to the fact danger more and more greatly, the.

(4) Through setting up a step and No. two steps to and spacing portion, prevent that valve rod and valve clack from breaking away from, spacing portion still increases gravity for the valve rod, when guaranteeing that the valve rod does not receive external force, and a step and No. two steps are laminated all the time, guarantee valve seal nature, and No. two lose heart passageway and macropore intercommunication cause gas leakage when preventing not needing the pressure release.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the electromagnetic component and the automatic groove (when the electromagnetic valve is turned on or locked);

FIG. 3 is a schematic diagram of the electromagnetic component and the manual groove (schematic diagram of the manual valve closing after the electromagnetic valve is powered off);

FIG. 4 is a schematic view of the valve stem and the air release pipe;

FIG. 5 is a schematic view of the valve flap structure;

FIG. 6 is a schematic view of the valve stem and flap in a mated, non-depressurized state;

FIG. 7 is a schematic view showing the state of pressure release by the valve rod and the valve flap;

FIG. 8 is a detail view of the electromagnetic component in cooperation with the automatic groove;

in the figure, 1-valve body, 2-valve clack, 3-valve rod, 4-air inlet cavity, 5-air outlet cavity, 6-air outlet pipe, 7-first air outlet channel, 8-second air outlet channel, 9-big hole, 10-small hole, 11-first step, 12-second step, 13-conical part, 14-limiting part, 15-electromagnetic part, 16-automatic groove, 17-manual groove, 18-first bevel edge, 19-second bevel edge, 20-movable iron core, 21-fixed iron core, 22-electromagnetic coil, 23-conical chamfer, 24-air outlet channel, 25-valve cover and 26-compression spring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution:

a control valve capable of manually releasing pressure and manually closing a valve in an emergency manner comprises a valve body 1, a valve clack 2 and a valve rod 3, wherein a valve cover 25 is fixed on the valve body 1 through bolts, the valve rod 3 is arranged on the valve cover 25, the lower end of the valve rod 3 is provided with the valve clack 2, a compression spring 26 is arranged between the valve clack 2 and the valve cover 25, the valve clack 2 divides the interior of the valve body 1 into an air inlet cavity 4 and an air exhaust cavity 5, the lower end of the valve rod 3 is an air release pipe 6, the diameter of the air release pipe 6 is smaller than that of the valve rod 3, a first air release passage 7 is arranged along the axis of the air release pipe 6, a second air release passage 8 communicated with the first air release passage 7 is radially arranged along the air release pipe 6, the first air release passage 7 is also communicated with the air inlet cavity 4, a large hole 9 and a small hole 10 which are coaxial are arranged on the valve clack 2, the small hole 10 is matched with the air release pipe 6, the junction of the large hole 9 and the small hole 10 forms a second step 12, when a step 11 is attached to the second step 12, the second air leakage channel 8 is not communicated with the large hole 9, an automatic groove 16 and a manual groove 17 matched with the electromagnetic component 15 are radially arranged along the valve rod 3, a first bevel edge 18 is arranged on the automatic groove 16, a second bevel edge 19 is arranged on the manual groove 17, the inclination angle of the second bevel edge 19 is larger than that of the first bevel edge 18, and the automatic groove 16 and the manual groove 17 are in transition communication to form an annular groove.

Further, the electromagnetic component 15 includes a movable iron core 20 and a fixed iron core 21 which are coaxially arranged, the axis of the movable iron core 20 is perpendicular to the axis of the valve rod 3, an electromagnetic coil 22 is arranged inside the movable iron core 20 along the axis of the movable iron core 20, and the movable iron core 20 is matched with the automatic groove 16 or the manual groove 17.

Furthermore, the tapered chamfer 23 is arranged at one end of the movable iron core 20 matched with the automatic groove 16 or the manual groove 17, so that the end part of the movable iron core 20 can be conveniently clamped into the automatic groove 16 or the manual groove 17, and the clamping probability is reduced.

Furthermore, a through pressure relief channel 24 is further arranged inside the movable iron core 20 along the axis of the movable iron core 20, when the end of the movable iron core 20 is clamped into the automatic groove 16 or the manual groove 17, sometimes the air pressure inside the automatic groove 16 or the manual groove 17 cannot be discharged due to over-sealing, the valve closing difficulty is improved, the air pressure inside the automatic groove 16 or the manual groove 17 can be timely discharged due to the pressure relief channel 24, the valve closing difficulty is reduced, and the valve is conveniently and quickly closed.

Furthermore, the edge of the large hole 9 is provided with a conical part 13 which inclines outwards, the conical part 13 is more beneficial to gas circulation, and the pressure difference between the air inlet cavity and the air exhaust cavity is conveniently and quickly balanced.

Further, 6 tip of disappointing pipe be equipped with the spacing portion 14 that prevents valve rod 3 and valve clack 2 and break away from, when spacing portion 14 and the contact of valve clack 2 bottom surfaces were guaranteed to the length of spacing portion 14, No. two lose heart passageway 8 just communicate with macropore 9, spacing portion 14 still increases gravity for valve rod 3, when guaranteeing that valve rod 2 does not receive external force, step 11 and No. two step 12 laminate all the time, guarantee valve seal nature, No. two lose heart passageway 8 and macropore 9 intercommunication cause gas leakage when preventing not needing the pressure release.

Furthermore, the small hole 10 is provided with a sealing ring, so that the air tightness between the small hole 10 and the air leakage pipe 6 is improved, and the integral sealing performance of the valve is ensured.

The utility model discloses the theory of operation as follows:

when the valve is opened, the electromagnetic component 15 is electrified, the electromagnetic coil 22 is electrified to apply force to the movable iron core 20 all the time, the movable iron core 20 is clamped into the automatic groove 16 on the valve rod 3, at the moment, the valve clack 2 opens the valve, and the valve is always in an opening state;

when the valve needs to be closed, the electromagnetic component 15 is powered off, the valve rod 3 has a descending trend under the self gravity, the gravity of the valve clack 2 and the restoring force of the compression spring 26, the first inclined edge 18 divides the descending force into a component force for enabling the movable iron core 20 to retract, therefore, the movable iron core 20 is enabled to leave the automatic groove 16, the valve rod 3 descends to close the valve, the valve clack 2 seals the valve under the self gravity of the valve rod 3, the gravity of the valve clack 2 and the restoring force of the compression spring, and the first step 11 is enabled to be always attached to the second step 12 under the self gravity of the valve rod 3 and the gravity of the limiting part 14, so that the valve is;

when the movable iron core 20 is clamped with the automatic groove 16, the movable iron core cannot be separated in time to cause an emergency situation that the valve cannot be closed, the valve rod 3 is manually rotated by 180 degrees, the movable iron core 20 is matched with the automatic groove 16 to gradually transit to be matched with the manual groove 17, and because the manual groove 17 is provided with the second bevel edge 19 and the inclination angle of the second bevel edge 19 is larger than that of the first bevel edge 18, the valve rod 3 is lower in resistance to descending, the valve is easier to descend to close the valve, and the valve is ensured to be closed in time;

when the pressure is required to be relieved before the valve is opened, the valve rod 3 is lifted upwards to enable the second air leakage channel 8 to be communicated with the large hole 9, the air inlet cavity 4 and the air exhaust cavity 5 are communicated through the first air leakage channel 7, the second air leakage channel 8 and the large hole 9, the pressure difference between the air inlet cavity and the air exhaust cavity is balanced, the pressure relief purpose is achieved, the valve clack 2 is not subjected to air pressure any more, the valve rod 3 is continuously lifted upwards at the moment, and the valve clack 2 is lifted easily, so that the valve can be opened conveniently and easily.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a but control valve of manual pressure release and manual emergent valve of closing, includes valve body (1), valve clack (2), valve rod (3), has valve gap (25) through the bolt fastening on valve body (1), valve rod (3) set up on valve gap (25), valve rod (3) lower extreme is equipped with valve clack (2), is equipped with compression spring (26) between valve clack (2) and valve gap (25), and valve clack (2) are with valve body (1) inside be divided into admit air chamber (4) and exhaust chamber (5), its characterized in that: the lower end of the valve rod (3) is provided with an air release pipe (6), the diameter of the air release pipe (6) is smaller than that of the valve rod (3), a first air release channel (7) is arranged along the axis of the air release pipe (6), a second air release channel (8) communicated with the first air release channel (7) is radially arranged along the air release pipe (6), the first air release channel (7) is also communicated with the air inlet cavity (4), the valve clack (2) is provided with a large hole (9) and a small hole (10) which are coaxial, the small hole (10) is matched with the air release pipe (6), the diameter of the large hole (9) is larger than that of the valve rod (3), the large hole (9) is communicated with the air exhaust cavity (5), the joint of the air release pipe (6) and the valve rod (3) forms a first step (11), the joint of the large hole (9) and the small hole (10) forms a second step (12), when the first step (11) is attached to the second step (12), the second air release channel (8), follow valve rod (3) radially be equipped with electromagnetic component (15) complex automatic recess (16) and manual recess (17), be equipped with No. one hypotenuse (18) on automatic recess (16), be equipped with No. two hypotenuses (19) on manual recess (17), the inclination of No. two hypotenuses (19) is greater than the inclination of a hypotenuse (18), automatic recess (16) and manual recess (17) transition intercommunication form the ring channel.

2. A control valve according to claim 1, wherein the control valve is operable to be manually depressurized and manually emergency closed, and wherein: the electromagnetic component (15) comprises a movable iron core (20) and a fixed iron core (21) which are coaxially arranged, the axis of the movable iron core (20) is perpendicular to the axis of the valve rod (3), an electromagnetic coil (22) is arranged inside the movable iron core (20) along the axis of the movable iron core (20), and the movable iron core (20) is matched with the automatic groove (16) or the manual groove (17).

3. A control valve for a manually depressible and manually emergency closeable valve according to claim 2, wherein: and one end of the movable iron core (20) matched with the automatic groove (16) or the manual groove (17) is provided with a conical chamfer (23).

4. A control valve for a manually depressible and manually emergency closeable valve according to claim 2, wherein: and a through pressure relief channel (24) is also arranged inside the movable iron core (20) along the axis of the movable iron core (20).

5. A control valve according to claim 1, wherein the control valve is operable to be manually depressurized and manually emergency closed, and wherein: the edge of the big hole (9) is provided with a conical part (13) which inclines outwards.

6. A control valve according to claim 1, wherein the control valve is operable to be manually depressurized and manually emergency closed, and wherein: the end part of the air release pipe (6) is provided with a limiting part (14) for preventing the valve rod (3) from being separated from the valve clack (2), and when the limiting part (14) is contacted with the bottom surface of the valve clack (2), the second air release channel (8) is communicated with the large hole (9).

7. A control valve according to claim 1, wherein the control valve is operable to be manually depressurized and manually emergency closed, and wherein: and a sealing ring is arranged on the small hole (10).