CN210318513U

CN210318513U - Quick-change type labyrinth regulating valve

Info

Publication number: CN210318513U
Application number: CN201920986302.9U
Authority: CN
Inventors: 徐喜龙; 张耀华; 张明明; 马小春; 马军
Original assignee: Wuzhong Instrument Engineering Technology Service Co ltd; Wuzhong Instrument Co Ltd
Current assignee: Wuzhong Instrument Engineering Technology Service Co ltd; Wuzhong Instrument Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-04-14
Anticipated expiration: 2029-06-27

Abstract

The utility model relates to the technical field of valves, in particular to a quick-change labyrinth regulating valve, which comprises a valve body, and further comprises a valve rod, a valve core and a sleeve component, wherein a cavity body matched with the sleeve component is arranged in the valve body; the utility model relates to a quick change formula labyrinth governing valve is when using, through bolt and nut with sleeve, clamp plate, labyrinth piece and lower base fixed connection, changes the welding between original sleeve, clamp plate, labyrinth piece and the lower base into bolt and nut fixed connection, is convenient for maintain like this, and the first flow path that sleeve lower extreme circumference was established down simultaneously is as first order decompression, and it can protect the labyrinth piece effectively to prolong the life of labyrinth piece, reduced cost of maintenance.

Description

Quick-change type labyrinth regulating valve

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to a quick change formula labyrinth adjusting valve is related to.

Background

As shown in fig. 1 and 2, the labyrinth structure in the conventional labyrinth regulating valve is integral, the labyrinth structure comprises an upper end cover, a labyrinth piece and a lower end cover which are connected and fixed through brazing, although the structure is stable in use, the structure has a long processing period due to large brazing difficulty, long period and low success rate, and once the labyrinth piece is damaged by washing and cannot be partially replaced, the labyrinth piece needs to be completely replaced when being damaged, so that the maintenance difficulty is large, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems that the labyrinth structure in the traditional labyrinth regulating valve is integral, the labyrinth structure comprises an upper end cover, labyrinth pieces and a lower end cover which are fixedly connected through brazing, the structure is stable in use, but the structure has large brazing difficulty, long period and low success rate, so that the processing period of the structure is too long, once the labyrinth pieces are scoured and damaged and cannot be partially replaced, one labyrinth piece is damaged, and then the labyrinth regulating valve needs to be completely replaced, thereby causing large maintenance difficulty and high maintenance cost, the quick-change type labyrinth regulating valve is provided.

The utility model provides a technical scheme that its technical problem adopted is: a quick-change type labyrinth regulating valve comprises a valve body, a valve rod, a valve core and a sleeve assembly, wherein a cavity body matched with the sleeve assembly is arranged in the valve body, a valve seat is arranged in the cavity body, the sleeve assembly is arranged on the valve seat, a channel matched with the cavity body is formed in the valve body, the valve rod is arranged in the valve body, the valve core is arranged at one end of the valve rod, and the valve core is arranged in the sleeve assembly;

the sleeve component comprises a sleeve, a lower base, a plurality of labyrinth pieces and a pressing plate, the sleeve is provided with a cover plate and a boss arranged on the cover plate, the sleeve is provided with a first through hole matched with a valve core, the first through hole extends from one end of the boss to the other end of the cover plate, the valve core is arranged in the first through hole, the outer peripheral surface of the boss is radially provided with a plurality of first flow channels along the through hole, the plurality of first flow channels extend inwards from the outer peripheral surface of the boss and are communicated with the first through hole, the labyrinth pieces are sequentially overlapped and sleeved on the boss, the labyrinth pieces are provided with labyrinth type second flow channels, one end of each second flow channel is communicated with one end of each first flow channel, the other end of each second flow channel is communicated with a cavity body, the pressing plate is arranged between the labyrinth pieces and the cover plate, the lower base is arranged at one end, far away, the sleeve, the pressing plate, the labyrinth piece and the lower base are fixedly connected through bolts and nuts, and the lower base is arranged on the valve seat. The sleeve, the pressing plate, the labyrinth plate and the lower base are fixedly connected through the bolts and the nuts, so that when the labyrinth plate is damaged, only the damaged labyrinth plate needs to be replaced, and the labyrinth plate is convenient to maintain.

Further, sleeve, clamp plate, maze piece and lower base all seted up with bolt assorted second through-hole, the one end of bolt passes sleeve, clamp plate, maze piece and the second through-hole on the base down and with nut threaded connection.

In order to facilitate the installation of the nut at one end of the screw, the sleeve comprises an upper barrel and a lower barrel, the boss is arranged on the lower barrel, the upper barrel is arranged at one end, away from the boss, of the lower barrel, a third through hole is formed in the upper barrel, a fourth through hole is formed in the lower barrel, and the third through hole and the fourth through hole are oppositely arranged and form the first through hole.

Further, the valve rod and the valve core are integrally formed. The valve core and the valve rod are integrated, so that the overall strength is improved, and the stable and reliable use of the valve core and the valve rod is ensured.

The utility model has the advantages that: the utility model relates to a quick-change type labyrinth adjusting valve, when in use, the sleeve, the pressing plate, the labyrinth piece and the lower base are fixedly connected through the bolt and the nut, the original welding between the sleeve, the pressing plate, the labyrinth piece and the lower base is changed into the bolt and the nut, thereby being convenient for maintenance, simultaneously, a first flow passage arranged at the lower end circumference of the lower sleeve is used as the first-stage decompression, which can effectively protect the labyrinth piece, prolong the service life of the labyrinth piece, reduce the maintenance cost, avoid the integral labyrinth structure in the traditional labyrinth adjusting valve, the labyrinth structure comprises an upper end cover, the labyrinth piece and a lower end cover, although the structure is stable in use, because the brazing difficulty of the structure is large, the period is long, the success rate is low, the processing period of the structure is too long, and once the labyrinth piece is damaged by washing and can not be partially replaced, one piece is damaged, and needs to be completely replaced, thereby causing the problems of high maintenance difficulty and high maintenance cost.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a front view of a prior valve body;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a front view of the present invention;

fig. 4 is a partially enlarged view of B in fig. 3.

In the figure: 1. the valve comprises a valve body, 101, a cavity body, 102, a channel, 2, a valve rod, 3, a valve core, 4, a valve seat, 5, a sleeve, 501, a first through hole, 502, a first flow channel, 6, a lower base, 7, a labyrinth plate, 701, a second flow channel, 8, a pressure plate, 9, a bolt, 10, a nut, 11, an upper cylinder, 12 and a lower cylinder.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Examples

As shown in fig. 3 and 4, the quick-change labyrinth regulating valve comprises a valve body 1, a valve rod 2, a valve core 3 and a sleeve assembly, wherein a cavity 101 matched with the sleeve assembly is arranged in the valve body 1, a valve seat 4 is arranged in the cavity 101, the sleeve assembly is arranged on the valve seat 4, a channel 102 matched with the cavity 101 is formed in the valve body 1, the valve rod 2 is arranged in the valve body 1, the valve core 3 is arranged at one end of the valve rod 2, and the valve core 3 is arranged in the sleeve assembly;

the sleeve component comprises a sleeve 5, a lower base 6, a plurality of labyrinth pieces 7 and a pressing plate 8, wherein the sleeve 5 is provided with a cover plate and a boss arranged on the cover plate, the sleeve 5 is provided with a first through hole 501 matched with the valve core 3, the first through hole 501 extends from one end of the boss to the other end of the cover plate, the valve core 3 is arranged in the first through hole 501, the peripheral surface of the boss is radially provided with a plurality of first flow channels 502 along the through hole, the first flow channels 502 extend inwards from the peripheral surface of the boss and are communicated with the first through hole 501, the labyrinth pieces 7 are sequentially overlapped and sleeved on the boss, the labyrinth pieces 7 are provided with a labyrinth second flow channel 701, one end of the second flow channel 701 is communicated with one end of the first flow channel 502, the other end of the second flow channel 701 is communicated with the cavity body 101, the pressing plate 8 is arranged between the labyrinth pieces 7 and the cover plate, the lower base 6 is arranged at one end, far away from the cover plate, of the labyrinth plate 7, the sleeve 5, the pressing plate 8, the labyrinth plate 7 and the lower base 6 are fixedly connected through bolts 9 and nuts 10, and the lower base 6 is arranged on the valve seat 4.

The sleeve 5, the pressing plate 8, the labyrinth piece 7 and the lower base 6 are all provided with second through holes matched with the bolts 9, and one end of each bolt 9 penetrates through the second through holes in the sleeve 5, the pressing plate 8, the labyrinth piece 7 and the lower base 6 and is in threaded connection with the nut 10.

The sleeve 5 comprises an upper barrel 11 and a lower barrel 12, the boss is arranged on the lower barrel 12, the upper barrel 11 is arranged at one end, far away from the boss, of the lower barrel 12, a third through hole is formed in the upper barrel 11, a fourth through hole is formed in the lower barrel 12, and the third through hole and the fourth through hole are oppositely arranged and form the first through hole 501.

The valve rod 2 and the valve core 3 are integrally formed. Meanwhile, the valve core 3 and the valve rod 2 can also be of a split structure, and the split structure is determined according to the use condition.

When the quick-change type labyrinth adjusting valve is installed, one end of a bolt 9 penetrates through a second through hole on a lower base plate, labyrinth plates 7 are sequentially stacked together, meanwhile, the second through holes on the labyrinth plates 7 are in one-to-one correspondence, one end of the bolt 9 penetrates through the second through hole on the labyrinth plate 7, then the second through hole on a pressure plate 8 is aligned with the bolt 9 and is placed in, at the moment, the lower base 6, the labyrinth plates 7 and the pressure plate 8 are sleeved on a boss of a sleeve 5, the bolt 9 penetrates through the second through hole on the sleeve 5, finally, the bolt 9 is in threaded connection with a nut 10, the lower base 6, the labyrinth plates 7, the pressure plate 8 and the sleeve 5 are fixedly connected together, at the moment, one end of a second flow passage 701 on the labyrinth plate 7 is communicated with a first flow passage 502 on the sleeve 5, installation of a sleeve assembly is completed, and then the sleeve assembly is placed on a valve seat 4 in, the valve rod 2 is arranged on the valve body 1, the valve rod 2 and the valve core 3 are fixedly connected, and the valve core 3 is inserted into the first flow channel 502 to complete the installation of the valve body 1;

during maintenance, only the sleeve assembly needs to be taken out, the nut 10 on the bolt 9 is loosened, the lower base 6, the labyrinth piece 7, the pressing plate 8 and the sleeve 5 are disassembled, the worn labyrinth piece 7 is replaced, and the lower base 6, the labyrinth piece 7, the pressing plate 8 and the sleeve 5 are fixedly connected together through the bolt 9 and the nut 10 after replacement, so that the maintenance is convenient, and the maintenance cost is reduced;

the first flow channel 502 arranged on the circumference of the lower end of the lower cylinder 12 is used as a first stage of pressure reduction, which can effectively protect the labyrinth plate 7, prolong the service life of the labyrinth plate 7 and reduce the maintenance cost.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A quick-change labyrinth regulating valve comprises a valve body (1), and is characterized in that: the valve comprises a valve body (1), a cavity body (101) matched with the sleeve assembly, a valve seat (4) is arranged in the cavity body (101), the sleeve assembly is arranged on the valve seat (4), a channel (102) matched with the cavity body (101) is formed in the valve body (1), the valve body (2) is arranged in the valve body (1), the valve core (3) is arranged at one end of the valve body (2), and the valve core (3) is arranged in the sleeve assembly;

the sleeve component comprises a sleeve (5), a lower base (6), a plurality of labyrinth pieces (7) and a pressing plate (8), wherein the sleeve (5) is provided with a cover plate and a boss arranged on the cover plate, the sleeve (5) is provided with a first through hole (501) matched with a valve core (3), the first through hole (501) extends from one end of the boss to the other end of the cover plate, the valve core (3) is arranged in the first through hole (501), the peripheral surface of the boss is radially provided with a plurality of first flow channels (502) along the through hole, the first flow channels (502) extend inwards from the peripheral surface of the boss and are communicated with the first through hole (501), the labyrinth pieces (7) are sequentially overlapped and sleeved on the boss, the labyrinth pieces (7) are provided with second flow channels (701) in a labyrinth manner, one end of each second flow channel (701) is communicated with one end of each first flow channel (502), the other end and the cavity body (101) intercommunication of second runner (701), clamp plate (8) set up between labyrinth piece (7) and apron, lower base (6) set up and keep away from the one end of apron at labyrinth piece (7), through bolt (9) and nut (10) fixed connection between sleeve (5), clamp plate (8), labyrinth piece (7) and lower base (6), lower base (6) set up on disk seat (4).

2. A quick-change labyrinth regulating valve as claimed in claim 1, wherein: sleeve (5), clamp plate (8), maze piece (7) and lower base (6) all seted up with bolt (9) assorted second through-hole, the second through-hole on sleeve (5), clamp plate (8), maze piece (7) and lower base (6) is passed and nut (10) threaded connection is passed to the one end of bolt (9).

3. A quick-change labyrinth regulating valve as claimed in claim 1 or 2, characterized in that: the sleeve (5) comprises an upper barrel body (11) and a lower barrel body (12), the boss is arranged on the lower barrel body (12), the upper barrel body (11) is arranged at one end, far away from the boss, of the lower barrel body (12), a third through hole is formed in the upper barrel body (11), a fourth through hole is formed in the lower barrel body (12), and the third through hole and the fourth through hole are oppositely arranged and formed in the first through hole (501).

4. A quick-change labyrinth regulating valve as claimed in claim 3, wherein: the valve rod (2) and the valve core (3) are integrally formed.