CN207112014U - Built-in opening and closing gate valve with anti-interference function - Google Patents

Abstract

The utility model discloses the built-in opening and closing gate valve with anti-interference function, belong to valve field, including valve body, flashboard, valve rod, bonnet, the top of valve body middle chamber and the bottom of bonnet are connected through a screw thread, valve stem top has mechanical lock head, and valve stem top is located in the opening at the top of bonnet through valve body, and stem lower portion is connected with flashboard top by trapezoidal thread, valve body middle chamber is provided with valve seat, and both sides and the valve base sealing of flashboard coordinate；Also include valve element, loose joint and loose joint nut, loose joint is connected through a screw thread with valve body, loose joint nut is socketed on outside the other end of loose joint, valve element one end is coordinated by the end face seal of silicon rubber and valve seat, guide sleeve is set with outside the valve element other end, guide sleeve is connected by gusset with loose joint, and back-moving spring is also set with outside guide sleeve, one end of back-moving spring is socketed with guide sleeve outer wall, the end contact of the back-moving spring other end and valve element；The utility model has the function that to prevent liquid from flowing backwards and preventing that gate valve from arbitrarily being opened.

Description

Built-in opening and closing gate valve with anti-interference function

Technical field

It the utility model is related to gate technical field, more particularly to the built-in opening and closing gate valve with anti-interference function.

Background technology

At present, urban water supply pipe network is formed using the single valve combination installation of the function such as gate valve and anti-interference valve, such Valve carries handwheel, it is not necessary to special tool(s) can with open and close, meanwhile, such valve combination not only installs inconvenience, and Improper easily leakage is sealed at two valve mounting interfaces, is easily opened, not only easily triggers between waters corporation and user Contradiction, pipe downstream medium can be also brought to flow backwards the problem of polluting, situation about being easily opened can also bring scheduling to water supply company Confusion, it is not easy to the problem of management.

Utility model content

The utility model aims to provide the built-in opening and closing gate valve with anti-interference function, and sealed reliable is simple in construction, side Just install, closed maintenance free, will not arbitrarily be opened, can effectively solve prior art valve installation inconvenience, easily leakage, The problems such as refluence.

To reach above-mentioned purpose, the technical solution adopted in the utility model is as follows：Built-in with anti-interference function opens Gate valve, including valve body, flashboard, valve rod, bonnet are closed, the top of the valve body and the bottom of bonnet are connected through a screw thread, bonnet Top is provided with through hole, and valve stem tip is located in the through hole through valve body, and stem lower portion is connected with flashboard top by trapezoidal thread Connect, valve body middle chamber is provided with valve seat, and both sides and the valve base sealing of the flashboard coordinate, and the valve stem top is provided with mechanical lock head, institute State the inwall at the top of bonnet and be provided with screwed hole, screwed hole and through hole coaxial line, screw thread bore dia is more than the diameter of through hole, the valve Bar is provided with the shaft shoulder, and the shaft shoulder is located in the screwed hole, and the diameter of the shaft shoulder is more than the diameter of through hole；Also include trim ring, it is described Trim ring is set in outside the valve rod below the shaft shoulder, and trim ring outer wall is connected through a screw thread with screwed hole, and shaft shoulder diameter is more than the interior of trim ring Footpath；Also including valve element, loose joint and loose joint nut, one end of the loose joint and one end of valve body are connected through a screw thread, and the one of loose joint End is provided with external screw thread, and the loose joint nut is socketed on outside the other end of loose joint, and the valve element includes valve core case and guide rod, valve element Silicon rubber is installed, the end face seal of silicon rubber and valve seat coordinates, and the end face of valve core case and one end of guide rod connect, and lead on seat Guide sleeve is set with to outside bar, guide sleeve is connected by gusset with loose joint, and back-moving spring, back-moving spring are also set with outside guide rod One end and guide sleeve outer wall be socketed, the end contact of the back-moving spring other end and valve core case.

The middle part of the valve core case is provided with along its circumferential groove, the silicon rubber and is located in the groove, silicon rubber Diameter is more than the intracavity diameter of valve seat, and one end of valve core case is additionally provided with chamfering, and the diameter of the chamfering is straight less than the inner chamber of valve seat Footpath.

The upper end of the trim ring has stepped hole, and shaft shoulder diameter is less than step bore dia, and the depth of stepped hole is more than the shaft shoulder Width.

Preferably, the section of the mechanical lock head is regular polygon.

Preferably, the back-moving spring is tapered return spring, and the small end of back-moving spring is set in outside guide sleeve, resets bullet The big end of spring and the end contact of valve core case.

Further, the valve seat includes the ram seal face coordinated with flashboard and the seal spool coordinated with silicon rubber Face.

Preferably, the axis of the valve core case, the axis of guide rod, the axis of guide sleeve overlap.

Further, the top of the bonnet is provided with opening, and opening and through hole coaxial line, mechanical lock head are located at the opening It is interior.

Further, in addition to it is used for the dust cap for closing the opening, the dust cap is adapted with opening.

Further, the other end of the loose joint is interior all directions structure, and the other end of the valve body is provided with close nipple.

Further, it is respectively positioned on the shaft shoulder provided with two sealing rings a, described two sealing ring a between the valve rod and bonnet Top, sealing ring b is provided between the loose joint and valve body.

Preferably, the sealing ring a and sealing ring b is O-ring seals.

The beneficial effects of the utility model are：

1st, trim ring fixes valve rod by being threaded into the screwed hole of bonnet, and structure is more simple, valve rod demolition, installation convenience, It is fixed, while trim ring is difficult for drop-off, extends valve service life；

2nd, the setting of valve element, guide sleeve, back-moving spring and silicon rubber, make gate valve of the present utility model that there is anti-medium interference Function, while add Gate-valve sealing performance, be easy to solve because interfering with each other between water meter to draw between Running-water Company and user The contradiction of hair, can also solve the problems, such as that pipe downstream medium flows backwards pollution；

3rd, the utility model has a wide range of application, and available for different bore gate valve series of products, can meet water supply industry not With pressure and the needs of latus rectum；

4th, the setting of valve stem tip mechanical lock head, number and frequency that gate valve is planned outer opening can be effectively reduced, is had Effect reduces the detection difficulty of water supply side.

Brief description of the drawings

Fig. 1 is the utility model structure diagram.

In figure：1- valve bodies, 2- flashboards, 3- valve rods, 31- mechanical lock heads, 4- bonnets, 5- trim rings, 6- sealing rings a, 7- are dust-proof Lid, 8- silicon rubber, 9- valve elements, 10- back-moving springs, 11- sealing ring b, 12- loose joint, 13- loose joints nut, 14- valve core cases, 15- are led To bar, 16- guide sleeves, 17- valve seats,.

Embodiment

In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality It is further elaborated with new.

As shown in figure 1, the built-in opening and closing gate valve with anti-interference function, including valve body 1, flashboard 2, valve rod 3, bonnet 4, The top and the bottom of bonnet 4 of the valve body 1 are connected through a screw thread, and the top of bonnet 4 is provided with through hole, and the top of valve rod 3 passes through valve Body 1 is located in the through hole, and the bottom of valve rod 3 is connected with the top of flashboard 2 by trapezoidal thread, and the lumen of valve body 1 is provided with valve seat 17, valve Seat 17 is provided with ram seal face and valve core sealed cover, and the both sides of the flashboard 2 coordinate with the ram seal face sealing of valve seat 17, institute State the top of valve rod 3 and be provided with mechanical lock head 31, the section of mechanical lock head 31 is equilateral triangle, and the top of bonnet 4 is provided with opening, opening With through hole coaxial line, the mechanical lock head 31 is located in opening, and gate valve includes being used for the dust cap 7 for closing the opening, dust-proof Lid 7 is adapted with opening.

The inwall at the top of bonnet 4 is provided with screwed hole, screwed hole and through hole coaxial line, and screw thread bore dia is more than through hole Diameter, the valve rod 3 are provided with the shaft shoulder, and the shaft shoulder is located in the screwed hole, and the diameter of the shaft shoulder is more than the diameter of through hole；Also wrap Trim ring 5 is included, the trim ring 5 is set in outside the valve rod 3 below the shaft shoulder, and outer wall and the screwed hole of trim ring 5 are connected through a screw thread, trim ring 5 upper end is provided with stepped hole, and shaft shoulder diameter is more than the internal diameter of trim ring, and the diameter of the shaft shoulder is less than the diameter of stepped hole, stepped hole Depth is more than the height of the shaft shoulder, and when screwing trim ring 5 and screwed hole, the shaft shoulder can be limited in stepped hole, while again will not Influence valve rod 3 to rotate, valve rod 3 is sealed with bonnet 4 by two O-ring seal a6, and two sealing ring a6 are located at the top of the shaft shoulder Through hole in.

Also include valve element 9, loose joint 12 and loose joint nut 13, the both ends of the valve body 1 are equipped with close nipple, the work The one end and one end of valve body 1 for connecing 12 are connected through a screw thread, and O-ring seal b11, loose joint 12 are provided between loose joint 12 and valve body 1 One end be provided with external screw thread, the other end of loose joint 12 has interior all directions structure, and the loose joint nut 13 is socketed on the another of loose joint 12 Outside one end, the valve element 9 includes valve core case 14 and guide rod 15, and the end face of valve seat 17 is provided with valve core sealed cover, valve core case 14 Middle part is provided with along its circumferential groove, and the groove is interior to be provided with silicon rubber 8, and the diameter of silicon rubber 8 is straight more than the inner chamber of valve seat 17 Footpath, one end of valve core case 14 are additionally provided with chamfering, and the diameter of the chamfering is less than the intracavity diameter of valve seat 17, and valve core case 14 passes through silicon Rubber 8 coordinates with the valve core sealed cover sealing on the end face of valve seat 17, and the end face of valve core case 14 is connected with one end of guide rod 15, led Guide sleeve 16 is set with to outside bar 15, guide sleeve 16 is connected by gusset with the inwall of loose joint 12, is also set with outside guide rod 15 Tapered return spring 10, small end and the outer wall of guide sleeve 16 of back-moving spring 10 are socketed, big end and the valve core case 14 of back-moving spring 10 End contact, when silicon rubber 8 contacts with valve seat 17, back-moving spring 10 has certain decrement, the axle of the valve core case 14 Line, the axis of guide rod 15, the axis of guide sleeve 16 overlap.

When needing to open gate valve, user opens dust cap 7, is fastened using special tool(s) and mechanical lock head 31, rotates Mechanical lock head 31, so that valve rod 3 rotates, valve rod 3 drives flashboard 2 to rise by the trapezoidal thread of its underpart, valve seat 17 it is interior Chamber path is opened, and now liquid flows into from gate valve one end, and under hydraulic pressure effect, valve core case 14 can promote tapered return spring 10 Mobile, guide rod 15 is moved in guide sleeve 16, and liquid is flowed out by the faying face of valve core case 14 and valve seat 17；When needing to close During gate valve, reverse turn mechanical lock head, flashboard 2 declines, and two sides of flashboard 2 connect with the ram seal face sealing of valve seat 17 Touch, liquid is blocked, and now valve element 9 moves under the elastic force of tapered return spring 10, silicon rubber 8 finally with the end face of valve seat 17 Valve core sealed cover contact, liquid is not reversely flow backwards.

Certainly, the utility model can also have other various embodiments, without departing substantially from the utility model spirit and its essence In the case of, those skilled in the art can make various corresponding changes and deformation, but these phases according to the utility model The change and deformation answered should all belong to the scope of the claims appended by the utility model.

Claims (10)

1. the built-in opening and closing gate valve with anti-interference function, including valve body (1), flashboard (2), valve rod (3), bonnet (4), described The top of valve body (1) and the bottom of bonnet (4) are connected through a screw thread, and the top of bonnet (4) is provided with through hole, and valve rod (3) top is worn Cross valve body (1) to be located in the through hole, valve rod (3) bottom is connected with flashboard (2) top by trapezoidal thread, valve body (1) lumen Provided with valve seat (17), both sides and valve seat (17) sealing of the flashboard (2) coordinate, it is characterised in that：Set at the top of the valve rod (3) There is a mechanical lock head (31), the inwall at the top of the bonnet (4) is provided with screwed hole, screwed hole and through hole coaxial line, screw thread bore dia More than the diameter of through hole, the valve rod (3) is provided with the shaft shoulder, and the shaft shoulder is located in the screwed hole, and the diameter of the shaft shoulder, which is more than, to be led to The diameter in hole；Also include trim ring (5), the trim ring (5) is set in valve rod (3) below the shaft shoulder outside, trim ring (5) outer wall and screw thread Hole is connected through a screw thread, and shaft shoulder diameter is more than the internal diameter of trim ring (5)；Also include valve element (9), loose joint (12) and loose joint nut (13), one end of the loose joint (12) and one end of valve body (1) are connected through a screw thread, and one end of loose joint (12) is provided with external screw thread, The loose joint nut (13) is socketed on outside the other end of loose joint (12), and the valve element (9) includes valve core case (14) and guide rod (15) silicon rubber (8), is installed, the silicon rubber (8) and the end face seal of valve seat (17) coordinate, valve core case on valve core case (14) (14) end face is connected with the one end of guide rod (15), is set with guide sleeve (16) outside guide rod (15), guide sleeve (16) passes through Gusset is connected with loose joint (12), and guide rod (15) is also set with back-moving spring (10), one end of back-moving spring (10) and guiding outside Cover the socket of (16) outer wall, the end contact of back-moving spring (10) other end and valve core case (14).

2. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The valve core case (14) middle part is provided with along its circumferential groove, and in the groove, the diameter of silicon rubber (8) is more than the silicon rubber (8) The intracavity diameter of valve seat (17), one end of valve core case (14) are additionally provided with chamfering, and the diameter of the chamfering is less than the interior of valve seat (17) Chamber diameter.

3. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The trim ring (5) upper end has stepped hole, and shaft shoulder diameter is less than step bore dia, and the depth of stepped hole is more than the width of the shaft shoulder.

4. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The valve rod (3) two sealing ring a (6) are provided between bonnet (4), described two sealing ring a (6) are respectively positioned on the top of the shaft shoulder, the work Connect and sealing ring b (11) is provided between (12) and valve body (1)；The sealing ring a and sealing ring b is O-ring seals.

5. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The mechanical lock The section of head (31) is regular polygon.

6. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The loose joint (12) the other end is interior all directions structure, and the other end of the valve body (1) is provided with close nipple.

7. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The reset bullet Spring (10) is tapered return spring, and the small end of back-moving spring (10) is set in guide sleeve (16) outside, the big end of back-moving spring (10) With the end contact of valve core case (14).

8. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The bonnet (4) top is provided with opening, and opening and through hole coaxial line, the mechanical lock head (31) are located in the opening；Also include being used for The dust cap (7) of the opening is closed, dust cap (7) is adapted with opening.

9. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The valve core case (14) axis, the axis of guide rod (15), the axis of guide sleeve (16) overlaps.

10. the built-in opening and closing gate valve according to claim 1 with anti-interference function, it is characterised in that：The valve seat (17) the ram seal face coordinated with flashboard (2) and the valve core sealed cover coordinated with silicon rubber (8) are included.