CN214466187U - Needle valve device with good sealing - Google Patents
Needle valve device with good sealing Download PDFInfo
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- CN214466187U CN214466187U CN202022837584.1U CN202022837584U CN214466187U CN 214466187 U CN214466187 U CN 214466187U CN 202022837584 U CN202022837584 U CN 202022837584U CN 214466187 U CN214466187 U CN 214466187U
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- valve rod
- hole
- valve
- air inlet
- isolating ring
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Abstract
The utility model relates to a needle valve device with good sealing, including valve rod and disk seat, the disk seat bottom is equipped with the valve rod hole, the valve rod is worn to establish in the valve rod hole, still including fixing the stuffing box that just is located valve rod hole upper end on the disk seat and fixing the gland in the stuffing box upper end, the valve rod passes the stuffing box, sealed filler and isolating ring have between stuffing box and the valve rod, the isolating ring lock hoop is on the valve rod, gland compresses tightly on sealed filler or on the isolating ring, outer air inlet through-hole has been seted up on the stuffing box lateral wall, outer air inlet through-hole is used for communicating with the inert gas source, interior air inlet through-hole has been seted up on the outer peripheral face of isolating ring, interior air inlet through-hole is aligned with outer air inlet through-hole. The needle valve device can effectively prevent gas from leaking between the valve rod and the valve seat, and has good sealing performance and safety performance between the valve rod and the valve seat.
Description
Technical Field
The utility model relates to a needle valve machinery, concretely relates to needle valve device with good sealing.
Background
There is the pressure release procedure in zirconium sponge production process, and pressure in the container can increase along with the volatilizing of chloride among the reaction process, when reaching certain pressure, can carry out the pressure release through the needle type valve, and the action of needle type valve through the valve rod drives corresponding pressure release structure action, carries out the pressure release. The needle valve mainly comprises a valve rod and a valve seat, a certain gap exists between the valve rod and the valve seat, the sealing performance is poor, smoke dust of chloride can escape from the gap in the working process, acid mist can be formed after the needle valve meets water, the health of field personnel is harmed, the working environment is deteriorated, meanwhile, a cylinder and other structures for driving the valve rod can be corroded, the cylinder is frequently replaced, the steel structure and other equipment in a workshop are corroded, and the service life of buildings and other equipment is shortened.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the to-be-solved technical problem of the utility model is to provide a needle valve device with good sealing, the leakproofness is good between valve rod and the disk seat, effectively avoids gaseous leaking from between valve rod and disk seat.
In order to realize the above-mentioned purpose, the utility model provides a needle valve device with good sealing, including valve rod and disk seat, the disk seat bottom is equipped with the valve rod hole, the valve rod is worn to establish in the valve rod hole, still including fixing the stuffing box that just is located valve rod hole upper end on the disk seat and fixing the gland in the stuffing box upper end, the valve rod passes the stuffing box, sealed packing and isolating ring have between stuffing box and the valve rod, the isolating ring lock hoop is on the valve rod, gland compresses tightly on sealed packing or on the isolating ring, outer air inlet through-hole has been seted up on the stuffing box lateral wall, outer air inlet through-hole is used for with the inert gas source intercommunication, interior air inlet through-hole has been seted up on the outer peripheral face of isolating ring, interior air inlet through-hole is aligned with outer air inlet through-hole.
Further, the spacer ring has a packing at both upper and lower ends.
Furthermore, the valve seat is also provided with a plug socket close to the valve rod hole, and the valve seat further comprises a nozzle arranged on the plug socket, the nozzle is aligned with the part of the valve rod extending out of the lower end of the valve rod hole, and the nozzle is used for being communicated with an inert gas source.
Further, the valve rod driving mechanism is arranged on the valve seat.
Further, the valve rod driving mechanism comprises an air cylinder arranged above the valve rod, and a piston rod of the air cylinder is fixedly connected with the top of the valve rod.
Further, the sealing filler is polytetrafluoroethylene woven filler.
As above, the utility model relates to a needle valve device has following beneficial effect:
through setting up the packing box and packing at the sealed packing and the isolating ring between material box and valve rod, during the use, the needle valve device sets up on sponge zirconium production container, and inside the disk seat bottom orientation container, outer air inlet through hole and inert gas source linked to each other well. On one hand, the packing gland compresses the packing to enable the packing to be tightly attached to the valve rod and the valve seat, and the sealing structure formed by the packing box, the packing and the packing gland seals the valve seat and the valve rod well, so that high-pressure gas is prevented from leaking upwards from the bottom through a gap between the valve seat and the valve rod, and chloride dust adhered to the valve rod is scraped by the isolating ring; on the other hand, high-pressure inert gas forms positive pressure higher than the pressure in the container between the stuffing box and the valve rod through the outer air inlet through hole and the inner air inlet through hole, so that the gas in the container is more difficult to enter between the stuffing box and the valve rod, and the sealing effect of the needle valve device is further ensured. The utility model discloses a needle valve device can prevent effectively that gas from leaking between valve rod and the disk seat, and the leakproofness is good between valve rod and the disk seat, and the security performance is good.
Drawings
Fig. 1 is a schematic structural view of the needle valve device of the present invention.
Fig. 2 is an enlarged view of circle a in fig. 1.
Fig. 3 is a schematic structural view of the valve seat and the stuffing box of the present invention.
Description of the element reference numerals
1 valve seat
1a base plate
1b support steel pipe
1c Top plate
1d valve stem hole
2 valve rod
3 stuffing box
3a outer air inlet through hole
4 packing gland
5 fastening bolt
6 sealing filler
7 isolating ring
7a inner air inlet through hole
8 socket
9 air cylinder
10 shaft coupling
11 hanger
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.
Referring to fig. 1 to 3, the present invention provides a needle valve device with good sealing, comprising a valve rod 2 and a valve seat 1, wherein the bottom of the valve seat 1 is provided with a valve rod hole 1d for the valve rod 2 to pass through, the valve rod 2 is inserted into the valve rod hole 1d, still including fixing on disk seat 1 and being located the stuffing box 3 of valve rod hole 1d upper end, and fix gland 4 in the stuffing box 3 upper end, valve rod 2 passes stuffing box 3, have between stuffing box 3 and the valve rod 2 sealed packing 6 and isolating ring 7, isolating ring 7 lock ring is on valve rod 2, gland 4 compresses tightly on sealed packing 6 or on isolating ring 7, outer air inlet through-hole 3a has been seted up on the stuffing box 3 lateral wall, outer air inlet through-hole 3a is used for communicating with inert gas source, interior air inlet through-hole 7a has been seted up on the outer peripheral face of isolating ring 7, interior air inlet through-hole 7a aligns with outer air inlet through-hole 3 a.
The utility model relates to a needle valve device's basic operating principle does: the needle valve device can be used in a container for producing sponge zirconium. Referring to fig. 1, when in use, the needle valve device is arranged on a zirconium sponge production container, the bottom of the valve seat 1 faces the interior of the container, the bottom end of the valve rod 2 is positioned in the container, and the outer air inlet through hole 3a is connected with an inert gas source. On one hand, the packing gland 4 compresses the packing 6 to ensure that the packing 6 is tightly attached to the valve rod 2 and the valve seat 1, the sealing structure formed by the packing box 3, the packing 6 and the packing gland 4 seals the valve seat 1 and the valve rod 2 well, high-pressure gas is prevented from upwards leaking from the bottom through a gap between the valve seat 1 and the valve rod 2, the isolating ring 7 can scrape chloride dust adhered to the valve rod 2 when the valve rod 2 moves up and down, and chloride dust in a container can be effectively prevented from being brought out by the valve rod 2; on the other hand, high-pressure inert gas enters a gap between the stuffing box 3 and the valve rod 2 through the outer air inlet through hole 3a and the inner air inlet through hole 7a, positive pressure higher than the pressure in the container is formed between the stuffing box 3 and the valve rod 2, and due to the positive pressure, the gas in the container cannot enter between the stuffing box 3 and the valve rod 2, so that the sealing effect of the needle valve device can be further ensured. The utility model discloses a needle valve device can prevent effectively that gas from leaking between valve rod 2 and disk seat 1, and the leakproofness is good between valve rod 2 and the disk seat 1, and the security performance is good. Of course, the needle valve device of the utility model can also be used in other situations requiring good sealing.
Referring to fig. 1 to 3, the present invention is further described below with a specific embodiment:
in the present embodiment, referring to fig. 1 and 2, the valve seat 1 includes a bottom plate 1a, a top plate 1c, and a support connecting the bottom plate 1a and the top plate 1c, a valve rod hole 1d is disposed on the bottom plate 1a, the needle valve device further includes a valve rod 2 driving mechanism disposed on the valve seat 1 and configured to drive the valve rod 2 to open and close, specifically, the valve rod 2 driving mechanism includes a cylinder 9 disposed above the valve rod 2, the cylinder 9 is fixed on the top plate 1c of the valve seat 1, and a piston rod of the cylinder 9 is connected to a top of the valve rod 2 through a coupling 10. Further, the needle valve device further includes a hanger 11 fixed to the top plate 1c of the valve seat 1, the hanger 11 being used to facilitate movement of the needle valve device.
In the present embodiment, referring to fig. 1, it is preferable that the isolation ring 7 is located at a position lower than the middle of the gap between the valve stem 2 and the stuffing box 3, the isolation ring 7 has the packing 6 at both the upper end and the lower end, and the packing gland 4 is pressed against the packing 6. The sealing filler 6 is a polytetrafluoroethylene woven filler, but of course, other suitable materials can be used.
In the present embodiment, referring to fig. 1, the valve seat 1 is preferably further provided with a socket 8 near the valve stem hole 1d, the socket 8 being obliquely fixed to the bottom plate 1a, and a nozzle (not shown in the drawings) mounted on the socket 8, the nozzle being aligned with a portion of the valve stem 2 protruding out of the lower end of the valve stem hole 1d, the nozzle being adapted to communicate with an inert gas source. During the use, inert gas spouts through the nozzle and blows to valve rod hole 1d lower extreme, on the one hand, can sweep and clear away the chloride dust that glues sticky on the valve rod 2 and valve rod hole 1d lower extreme department, further avoids chloride to leak, and on the other hand forms inert gas protection in valve rod hole 1d lower extreme department, can further avoid the interior gas of container to leak away from the clearance between valve rod hole 1d and the valve rod 2.
In this embodiment, referring to fig. 1, as a preferred design, the packing gland 4 is fixed at the upper end of the packing box 3 by using the fastening bolt 5, the upper end of the packing box 3 is provided with a threaded hole, and the fastening bolt 5 passes through the packing gland 4 and is screwed into the threaded hole, so that the tightness of the sealing packing 6 in the packing box can be conveniently adjusted by adjusting the tightening degree of the fastening bolt 5, and the sealing effect is ensured.
From the above, needle valve device in this embodiment sweeps sealedly through gland packing 6, inert gas malleation and inert gas, has guaranteed the leakproofness between valve rod 2 and the disk seat 1 from three aspects, when being used for the pressure release of zirconium sponge production container, can not have chloride smoke and dust to escape during the pressure release, has improved the rate of recovery, and the cost is reduced has protected the environment, has improved the work safety nature, has reduced the pollution and has corroded other equipment.
To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. The utility model provides a needle valve device with good sealing, includes valve rod (2) and disk seat (1), disk seat (1) bottom is equipped with valve rod hole (1d), its characterized in that is worn to establish in valve rod hole (1d) in valve rod (2): the valve rod (2) penetrates through the stuffing box (3), a sealing stuffing (6) and an isolating ring (7) are arranged between the stuffing box (3) and the valve rod (2), the isolating ring (7) is tightly hooped on the valve rod (2), the stuffing cover (4) is tightly pressed on the sealing stuffing (6) or the isolating ring (7), an outer air inlet through hole (3a) is formed in the side wall of the stuffing box (3), the outer air inlet through hole (3a) is communicated with an inert gas source, an inner air inlet through hole (7a) is formed in the outer peripheral surface of the isolating ring (7), and the inner air inlet through hole (7a) is aligned with the outer air inlet through hole (3 a).
2. The needle valve device according to claim 1, characterized in that: the upper end and the lower end of the isolating ring (7) are provided with sealing packing (6).
3. The needle valve device according to claim 1, characterized in that: the valve seat (1) is also provided with a plug socket (8) at a position close to the valve rod hole (1d), and further comprises a nozzle installed on the plug socket (8), the nozzle is aligned with the part of the valve rod (2) extending out of the lower end of the valve rod hole (1d), and the nozzle is used for being communicated with an inert gas source.
4. The needle valve device according to claim 1, characterized in that: the packing gland (4) is fixed at the upper end of the packing box (3) by using a fastening bolt (5), a threaded hole is formed in the upper end of the packing box (3), and the fastening bolt (5) penetrates through the packing gland (4) and is screwed into the threaded hole.
5. The needle valve device according to claim 1, characterized in that: the valve rod driving mechanism is arranged on the valve seat (1).
6. The needle valve device according to claim 5, characterized in that: the valve rod driving mechanism comprises an air cylinder (9) arranged above the valve rod (2), and a piston rod of the air cylinder (9) is fixedly connected with the top of the valve rod (2).
7. The needle valve device according to claim 1, characterized in that: the sealing filler (6) is a polytetrafluoroethylene woven filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837584.1U CN214466187U (en) | 2020-12-01 | 2020-12-01 | Needle valve device with good sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837584.1U CN214466187U (en) | 2020-12-01 | 2020-12-01 | Needle valve device with good sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214466187U true CN214466187U (en) | 2021-10-22 |
Family
ID=78185261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022837584.1U Active CN214466187U (en) | 2020-12-01 | 2020-12-01 | Needle valve device with good sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214466187U (en) |
-
2020
- 2020-12-01 CN CN202022837584.1U patent/CN214466187U/en active Active
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