CN2392041Y

CN2392041Y - Strong sealing, self-balancing slurry valve

Info

Publication number: CN2392041Y
Application number: CN 99224952
Authority: CN
Inventors: 侯安平; 姜广俊; 姜富高; 王石栋
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-27
Filing date: 1999-08-27
Publication date: 2000-08-16
Anticipated expiration: 2009-08-27

Abstract

The utility model relates to a strong sealing and self-balancing slurry valve. An inner ring and an outer ring are respectively arranged inside and outside of an O-shaped ring. The outer ring is provided with a plurality of outer ring positioning blocks which are connected with the outer ring and are fixed in slotted holes on a valve body. The inner ring is provided with inner ring positioning blocks which are in one-to-one correspondence with the outer ring positioning blocks and are fixed in the slotted holes on the valve body. Besides, a connecting rod, the upper end of which is fixed on a gate and the vertical part of which is provided with a rack, can be engaged with a gear which is arranged on the top of a balance valve. The balance valve is connected onto a connecting pipe, one end of the balance valve is communicated with the inlet part of a slag slurring valve and the other end of the balance valve is communicated with a valve cavity. The utility model has the advantages of reliable sealing performance and long service life, and can be used as an adjusting valve.

Description

Strong sealing self balancing slurry valve

The utility model relates to a kind of valve, particularly gate valve.

In the pipeline of conveying solid substance particle, slurry valve is housed all generally at present.Its structure mainly is: by the two halves valve body that fastening piece is fixed together, its vertical valve body lower portion has corresponding valve opening, establishes flanged (FLGD) short tube on it, establishes flashboard between the two halves valve body, and the through hole corresponding with the valve body valve opening arranged on it.The screw rod that links to each other with the flashboard upper end passes the nut that is meshed with it, and this nut is fixed on the support of valve body upper end.On the valve body of an adjacent side, all establish two annular recess, establish body sealing ring in itself and the valve body edge corresponding groove, and establish the O RunddichtringO in the valve opening corresponding groove with flashboard.The deficiency of above-mentioned slurry valve is: in the moment of valve opening, along with the inflow valve pocket internal pressure of the big flow velocity slurry of high pressure increases severely suddenly, the O RunddichtringO is rushed out valve pocket because of not bearing its impacting with high pressure, causes valve invalidation.Also there is same problem in this valve when closing, just the degree of O RunddichtringO damage is a little bit smaller relatively.

The purpose of this utility model is to provide the strong sealing self balancing slurry valve that still has good seal performance, long service life under a kind of high pressure.

The purpose of this utility model can realize by following measure: a kind of strong sealing self balancing slurry valve, it includes valve body, flashboard, screw rod, support, nut, handwheel, body sealing ring and O RunddichtringO, it is characterized in that: at the O RunddichtringO peripheral hardware outer shroud corresponding with its external diameter, in the O RunddichtringO, establish the interior ring corresponding with its internal diameter, on outer shroud, establish 3～8 coupled outer shroud positioning blocks, they are fixed in the slotted eye of valve body by fastening piece, on interior ring, be provided with the outer shroud positioning block one to one in the loop mapping piece, they are fixed on by fastening piece in the slotted eye of valve body, and corresponding inside and outside ring positioning block is on same radial line.The upper end is fixed on lower end, flashboard top and places the interior connecting rod of bounding means through hole, its vertical portion is arranged with tooth bar, it can be meshed with the gear at equilibrium valve top, this equilibrium valve is connected on the PRESSURE PIPE, the one end is connected with the slurry valve intake section, and the other end passes valve body and is connected with valve pocket between flashboard and valve body.Be provided with 3 outer shroud positioning blocks and 3 the interior loop mapping pieces corresponding at the O RunddichtringO first half with it.The gear at equilibrium valve top is an operative gear.

The utility model mainly is to set position mechanism and valve pocket internal and external pressure balance mechanism on the O of former gate valve RunddichtringO.Wherein O RunddichtringO positioning means mainly includes: inner and outer rings, inner and outer rings positioning block and fastening piece.At the O RunddichtringO peripheral hardware metal cirque corresponding with its external diameter is outer shroud, establishes the metal cirque corresponding with its internal diameter and encircle promptly in the O RunddichtringO.Being provided with 3～8 coupled sluies on outer shroud is the outer shroud positioning block, and they are fixed in the slotted eye of valve body by fastening piece.Above-mentioned outer shroud positioning block can be uniform, also can be all to be located at the O RunddichtringO first half.On interior ring, be provided with the outer shroud positioning block one to one in the loop mapping piece.They are fixed in the slotted eye of valve body by fastening piece, and corresponding inside and outside ring positioning block is on same radial line.Interior loop mapping piece and interior ring can connect together, and also can be to thereon.Inside and outside ring is clamped the O RunddichtringO, by inside and outside positioning block it is fixed on the valve body firmly again, also can not be subjected to displacement phenomenon even the O RunddichtringO is subjected to impacting with high pressure, has guaranteed the reliable sealing of valve.

Valve pocket internal and external pressure balance mechanism mainly includes: connecting rod, tooth bar, gear, equilibrium valve and PRESSURE PIPE.Wherein small end is fixed on flashboard top, and the lower end places in the through hole of its bounding means.Vertical portion at connecting rod is arranged with tooth bar, and it can be meshed with the gear at equilibrium valve top.This equilibrium valve is stopcock substantially, and just the handle that will link to each other with the valve rod upper end changes gear into, this gear and spool coaxial line.Above-mentioned equilibrium valve is connected on the PRESSURE PIPE, and this PRESSURE PIPE one end is connected with the slurry valve intake section, and the other end passes valve body and the flashboard energy that links to each other with valve pocket between valve body.When rotation hand wheel is opened above-mentioned slurry valve, the flashboard drivening rod that rises moves upward thereupon, and the tooth bar that connecting rod drives on it when moving upward is synchronized with the movement with it, the gear that this tooth bar orders about again on the equilibrium valve rotates, so equilibrium valve is opened gradually, the PRESSURE PIPE two ends are communicated with, promptly the slurry valve inlet duct is connected with valve pocket, two place's pressure are tended to balance, and the O RunddichtringO no longer bears the impact of high pressure.When flashboard was all opened, the gear half-twist was also all opened equilibrium valve.When slurry valve is closed also in like manner.Preferably the gear on the equilibrium valve is an operative gear.

The utility model has following advantage compared to existing technology:

1, no matter O RunddichtringO of the present utility model all has excellent sealing performance at switch or half-open off status, thereby can guarantee the ground operation of the long-time normal reliable of whole slurry valve.

2, the utility model not only can be used as the gate valve use, also can be used as modulating valve and uses.

Drawing is described as follows:

Fig. 1 is that the utility model master looks generalized section.

Fig. 2 is the local enlarged diagram of Fig. 1 I.

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is a schematic side view of the present utility model.

Fig. 5 is the local enlarged diagram of Fig. 1 II.

Fig. 6 is the cross-sectional schematic of the utility model equilibrium valve.

The utility model is described in further detail to utilize the example shown in the accompanying drawing.In the schematic representation of Fig. 1, Fig. 2 and strong sealing self balancing slurry valve shown in Figure 3, by the two halves valve body 1 that fastening piece is fixed together, its vertical valve body lower portion has corresponding valve opening, establishes flanged (FLGD) short tube on it.Between the two halves valve body, establish flashboard 2, have on it and the corresponding through hole of short tube internal diameter.The flashboard upper end links to each other with screw rod 3 lower ends.The screw rod that handwheel 4 is established in this upper end passes the nut 5 that is meshed with it, and this nut is fixed on the support 6 of valve body upper end.On the valve body of an adjacent side, all establish two annular recess, establish body sealing ring 7 in itself and the valve body edge corresponding groove, and establish O RunddichtringO 8 in the valve opening corresponding groove with flashboard.At the O RunddichtringO peripheral hardware metal outer shroud 9 corresponding, in the O RunddichtringO, establish in the metal corresponding and encircle 10 with its internal diameter with its external diameter.Be welded with 3 outer shroud positioning blocks 11 on outer shroud, they are fixed in the slotted eye of valve body by fastening piece.On interior ring, establish with the outer shroud positioning block one to one in loop mapping piece 12, corresponding inside and outside ring positioning block is on same radial line.On the ring, they were fixed in the slotted eye of valve body by fastening piece in interior loop mapping piece was against.

In the schematic representation of Fig. 1, Fig. 4 and strong sealing self balancing slurry valve shown in Figure 5, the upper end is fixed on lower end, flashboard top and places connecting rod 13 in the bounding means through hole, and its vertical portion is arranged with tooth bar 14, and it can be meshed with the gear 16 at equilibrium valve 15 tops.This equilibrium valve is a stopcock, and it includes valve body 17, spool 18, valve rod 19, loam cake 20, setting sleeve 21, lower cover 22, Returnning spring 23 and operative gear, as shown in Figure 6.Above-mentioned equilibrium valve is connected on the PRESSURE PIPE 24, and this PRESSURE PIPE one end links to each other with the slurry valve intake section, and the other end passes valve body and is connected with valve pocket between flashboard and the valve body.

Claims

1, a kind of strong sealing self balancing slurry valve, it includes valve body (1), flashboard (2), screw rod (3), support (6), nut (5), handwheel (4), body sealing ring (7) and O RunddichtringO (8), it is characterized in that: at the O RunddichtringO peripheral hardware outer shroud corresponding (9) with its external diameter, in the O RunddichtringO, establish the interior ring (10) corresponding with its internal diameter, on outer shroud, establish 3～8 coupled outer shroud positioning blocks (11), they are fixed in the slotted eye of valve body by fastening piece, on interior ring, be provided with the outer shroud positioning block one to one in loop mapping piece (12), they are fixed on by fastening piece in the slotted eye of valve body, and corresponding inside and outside ring positioning block is on same radial line.

2, strong sealing self balancing slurry valve according to claim 1, it is characterized in that: the upper end is fixed on lower end, flashboard top and places the interior connecting rod (13) of bounding means through hole, its vertical portion is arranged with tooth bar (14), it can be meshed with the gear (16) at equilibrium valve (15) top, this equilibrium valve is connected on the PRESSURE PIPE (24), the one end is connected with the slurry valve intake section, and the other end passes valve body and is connected with valve pocket between flashboard and valve body.

3, strong sealing self balancing slurry valve according to claim 1 and 2 is characterized in that: be provided with 3 outer shroud positioning blocks and 3 the interior loop mapping pieces corresponding with it at the O RunddichtringO first half.

4, strong sealing self balancing slurry valve according to claim 2, it is characterized in that: the gear at equilibrium valve top is an operative gear.