CN210860039U - Valve special for fluorine-lined high-risk medium - Google Patents

Abstract

The utility model relates to a special valve of fluorine lining high-risk medium, including last valve body, lower valve body, go up the valve rod, lower valve rod, bellows and valve clack, lower valve body lower part is equipped with feed liquor pipe and drain pipe, be equipped with vertical control chamber in the upper portion of lower valve body, the bellows is in the control intracavity, the feed liquor pipe is connected with the control chamber through vertical feed liquor hole, the drain pipe is through slope drain hole connection control chamber, the top in vertical feed liquor hole is equipped with the ladder platform, ladder platform department is fixed with the disk seat, the valve clack bottom forms sealed external conical surface, the hole top outside of disk seat is equipped with sealed interior conical surface, be equipped with O type circle on the guiding hole lateral wall, the packing indoor packing that is filled, the control chamber, the feed liquor pipe, the drain pipe, be equipped with the. The utility model discloses the valve body inner space is reasonable, has guaranteed the flexible space and the expansibility of bellows, and the runner does not have the dead angle, and the valve clack closely cooperates with the disk seat, ensures sealed safe and reliable, adopts three seal structure, avoids leaking.

Description

Valve special for fluorine-lined high-risk medium

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to special valve of lining fluorine high-risk medium.

Background

With the rapid development of national economy in China, the pipeline control system is suitable for industrial departments such as petroleum, chemical engineering, chemical fertilizers, pesticides, chemical fibers and the like, and the special valve is an important part of the pipeline system.

For valves with toxic media and the like, sealing is the easiest, and the high-pressure resistant bellows stop valve can perform double sealing under the high-pressure condition. The traditional corrugated pipe stop valve is easy to leak, the sealing surface is not wear-resistant and corrosion-resistant, the service life is short, the telescopic space of the corrugated pipe is limited, and the telescopic performance of the corrugated pipe cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special valve of lining fluorine high-risk medium solves the sealed effect of present valve body not good, and life is short, and the limited problem in bellows space that stretches out and draws back.

The utility model discloses a special valve of fluorine lining high-risk medium, including upper valve body, lower valve body, upper valve rod, lower valve rod, bellows and valve clack, upper valve body and lower valve body pass through bolt fixed connection, be equipped with the sealed pad between upper valve body and the lower valve body, upper valve rod connects lower valve rod, lower valve rod bottom fixed connection valve clack, the bellows cover is established on lower valve rod, lower valve body lower part is equipped with horizontal feed liquor pipe and drain pipe that has the flange, be equipped with vertical control chamber in the upper portion of lower valve body, the bellows is in the control chamber, the bellows has the interval with the lateral wall of control chamber, the feed liquor pipe is connected with the control chamber through vertical feed liquor hole, the drain pipe is connected with the control chamber through slope drain hole, the top of vertical feed liquor hole is equipped with the ladder platform, ladder platform department is fixed with the valve seat, be equipped with the annular groove on the lateral wall of ladder platform lower part, the top outside of disk seat forms the spacing turn-ups that can support on ladder mesa, the valve clack bottom forms sealed external conical surface, the hole top outside of disk seat is equipped with sealed inner cone, be equipped with the guiding hole that supplies lower valve rod to pass on the last valve body of control chamber top, be equipped with O type circle on the guiding hole lateral wall, O type circle is fluororubber, it is LCB 16Mn lining PFA to go up the valve body and lower valve body, the top of guiding hole is equipped with the chamber of packing, the packing has the filler in the chamber packing, the top of filler is equipped with the gland of cover on lower valve rod, the top of chamber of packing is equipped with the installing port, the valve rod nut is installed through the flat bearing rotation in installing port top, valve rod nut and last valve rod threaded connection, the valve rod nut top is fixed with the switch hand wheel, the control chamber, the feed liquor. The corrugated pipe is a PFA corrugated pipe formed in one step by sleeving and pressing, the filler is a PTFE material, the lining layer is a PFA fluorine material, the valve flap is 316/S2205 lining PFA, and the valve seat is a PTFE/PFA material.

Go up valve rod and pass through shaft coupling fixed connection with lower valve rod, the lower extreme of going up the valve rod is fixed with the switch indicator, can conveniently indicate the position of valve clack.

The outer tip of feed liquor pipe and the outer tip of drain pipe are equipped with support concave station one, and the cladding of backing layer lower extreme is on supporting concave station one, and the top in control chamber is equipped with support concave station two, and the cladding of backing layer upper end is on supporting recess two. Preventing the backing layer from falling off.

The inner walls of the control cavity, the liquid inlet pipe, the liquid outlet pipe and the liquid outlet hole are provided with trapezoidal grooves, the lining layer extends into the trapezoidal grooves, and the lining layer is more firmly fixed and prevented from loosening and falling.

The top threaded connection of valve-stem nut has waterproof nut, is equipped with waterproof pad between waterproof nut outside bottom and the valve-stem nut.

Compared with the prior art, the utility model has the advantages of:

the valve body has reasonable inner space, ensures the expansion space and the expansion performance of the corrugated pipe, has no dead angle in a flow channel, ensures the safety and the reliability of sealing by closely matching the valve clack with the valve seat, adopts the first sealing of the corrugated pipe, the second sealing of the O-shaped ring and the third sealing of the packing, has better sealing effect and avoids leakage.

Drawings

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

in the figure: 1. switch hand wheel, 2, waterproof nut, 3, waterproof pad, 4, tank filler, 5, go up the valve stem, 6, go up the valve body, 7, gland, 8, packing, 9, bellows, 10, lining layer, 11, drain pipe, 12, dovetail groove, 13, support concave station one, 14, disk seat, 15, annular fixture block, 16, feed liquor pipe, 17, valve clack, 18, lower valve body, 19, lower valve stem, 20, O type circle, 21, shaft coupling, 22, switch indicator, 23, valve stem nut, 24, flat bearing.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in figure 1, the fluorine-lined high-risk medium special valve comprises an upper valve body 6, a lower valve body 18, an upper valve rod 5, a lower valve rod 19, a corrugated pipe 9 and a valve clack 17, wherein the upper valve body 6 and the lower valve body 18 are fixedly connected through bolts, a sealing gasket is arranged between the upper valve body 6 and the lower valve body 18, the upper valve rod 5 is connected with the lower valve rod 19, the bottom of the lower valve rod 19 is fixedly connected with the valve clack 17, the corrugated pipe 9 is sleeved on the lower valve rod 19, the lower part of the lower valve body 18 is provided with a horizontal liquid inlet pipe 16 and a liquid outlet pipe 11 which are provided with flanges, the upper part of the lower valve body 18 is internally provided with a vertical control cavity, the corrugated pipe 9 is positioned in the control cavity, the corrugated pipe 9 and the side wall of the control cavity have a distance, the liquid inlet pipe 16 is connected with the control cavity through a vertical liquid inlet hole, the liquid outlet pipe 11 is connected with the, an annular fixture block 15 matched with an annular groove is fixed on the outer side wall of the lower part of the valve seat 14, a limiting flanging which can be supported on the table surface of a step table is formed on the outer side of the top of the valve seat 14, a sealing outer conical surface is formed at the bottom of a valve clack 17, a sealing inner conical surface is arranged on the outer side of the top of an inner hole of the valve seat 14, a guide hole for a lower valve rod 19 to pass through is formed in an upper valve body 6 above a control cavity, an O-shaped ring 20 is arranged on the side wall of the guide hole, a packing chamber is arranged above the guide hole, packing 8 is filled in the packing chamber, a gland 7 sleeved on the lower valve rod 19 is arranged above the packing 8, an installation opening is arranged above the packing chamber, a valve rod nut 23 is rotatably arranged at the top of the installation opening through a plane, the inner walls of the liquid outlet pipe 11, the vertical liquid inlet hole and the liquid outlet hole are provided with a lining layer 10.

The upper valve rod 5 and the lower valve rod 19 are fixedly connected through a coupler 21, and a switch indicator 22 is fixed at the lower end of the upper valve rod 5.

The outer end of the liquid inlet pipe 16 and the outer end of the liquid outlet pipe 11 are provided with a first supporting concave platform 13, the lower end of the lining layer 10 is coated on the first supporting concave platform 13, the top of the control cavity is provided with a second supporting concave platform, and the upper end of the lining layer 10 is coated on the second supporting groove.

The inner walls of the control cavity, the liquid inlet pipe 16, the liquid outlet pipe 11 and the liquid outlet hole are provided with trapezoidal grooves 12, and the lining layer 10 extends into the trapezoidal grooves 12.

The top threaded connection of valve-stem nut 23 has waterproof nut 2, is equipped with waterproof pad 3 between waterproof nut 2 outside bottom and the valve-stem nut 23, is equipped with the tank filler sleeve 4 for the oiling of valve-stem nut 23 on the upper valve body 6.

When the valve is in operation, the valve rod nut is rotated through the switch hand wheel, so that the valve rod nut rotates, then the valve rod nut drives the upper valve rod and the lower valve rod to directly ascend or descend through the rotary threads matched with the upper valve rod, at the moment, pure up-and-down sliding friction exists between the upper valve rod and the lower valve rod and the sealing filler, the valve clack rises and falls off to be in contact with the valve seat when the valve is opened, the liquid inlet pipe is communicated with the liquid outlet pipe, liquid normally flows, the valve clack descends when the valve is closed, the upper sealing conical surface and the lower sealing conical surface are matched to complete.

To sum up, the utility model discloses the valve body inner space is reasonable, has guaranteed the flexible space and the expansibility of bellows, and the runner does not have the dead angle, and the valve clack closely cooperates with the disk seat, ensures sealed safe and reliable, has adopted the bellows first sealed together, and O type circle second is sealed, and the third of packing is sealed, and sealed effect is better, avoids leaking.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims (5)

1. The utility model provides a special valve of lining fluorine high-risk medium, including last valve body (6), lower valve body (18), go up valve rod (5), lower valve rod (19), bellows (9) and valve clack (17), go up valve body (6) and lower valve body (18) and pass through bolt fixed connection, go up and be equipped with sealed the pad between valve body (6) and lower valve body (18), go up valve rod (5) and connect lower valve rod (19), lower valve rod (19) bottom fixed connection valve clack (17), bellows (9) cover is established under on valve rod (19), its characterized in that: the lower part of the lower valve body (18) is provided with a horizontal liquid inlet pipe (16) with a flange and a liquid outlet pipe (11), the upper part of the lower valve body (18) is internally provided with a vertical control cavity, a corrugated pipe (9) is positioned in the control cavity, a space is reserved between the corrugated pipe (9) and the side wall of the control cavity, the liquid inlet pipe (16) is connected with the control cavity through a vertical liquid inlet hole, the liquid outlet pipe (11) is connected with the control cavity through an inclined liquid outlet hole, the top of the vertical liquid inlet hole is provided with a step platform, a valve seat (14) is fixed at the step platform, the side wall of the lower part of the step platform is provided with an annular groove, an annular clamping block (15) matched with the annular groove is fixed on the outer side wall of the lower part of the valve seat (14), a limiting flanging capable of being supported on the platform surface of the step platform is formed on the outer side, be equipped with the guiding hole that confession lower valve rod (19) passed on last valve body (6) of control chamber top, be equipped with O type circle (20) on the guiding hole lateral wall, the top of guiding hole is equipped with the packing chamber, the packing has packing (8) in the packing chamber, the top of packing (8) is equipped with gland (7) of cover on lower valve rod (19), the top of packing chamber is equipped with the installing port, valve-stem nut (23) are installed in the rotation of plane bearing (24) through the installing port top, valve-stem nut (23) and last valve rod (5) threaded connection, valve-stem nut (23) top is fixed with switch hand wheel (1), the control chamber, feed liquor pipe (16), drain pipe (11), be equipped with on the inner wall in vertical feed liquor hole and the drain.

2. The special valve for the fluorine-lined high-risk medium as claimed in claim 1, wherein: the upper valve rod (5) is fixedly connected with the lower valve rod (19) through a coupler (21), and a switch indicator (22) is fixed at the lower end of the upper valve rod (5).

3. The special valve for the fluorine-lined high-risk medium as claimed in claim 2, wherein: the outer end of liquid inlet pipe (16) and the outer end of liquid outlet pipe (11) are equipped with support concave station one (13), and the cladding of lining layer (10) lower extreme is on support concave station one (13), and the top of control chamber is equipped with support concave station two, and the cladding of lining layer (10) upper end is on support recess two.

4. The special valve for the fluorine-lined high-risk medium as claimed in claim 3, wherein: the inner walls of the control cavity, the liquid inlet pipe (16), the liquid outlet pipe (11) and the liquid outlet hole are provided with trapezoidal grooves (12), and the lining layer (10) extends into the trapezoidal grooves (12).

5. The special valve for the fluorine-lined high-risk medium as claimed in claim 3, wherein: the top threaded connection of valve-stem nut (23) has waterproof nut (2), is equipped with waterproof pad (3) between waterproof nut (2) outside bottom and valve-stem nut (23), is equipped with on last valve body (6) and gives oil filler hole (4) of valve-stem nut (23) oiling.

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