CN214578864U

CN214578864U - Stop valve

Info

Publication number: CN214578864U
Application number: CN202022026090.5U
Authority: CN
Inventors: 范存武
Original assignee: Haogong Valve Co ltd
Current assignee: Haogong Valve Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-11-02
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a stop valve, which comprises a valve pipe, wherein the top end of the valve pipe is embedded and communicated with an upper valve casing, connecting flanges are welded at the two ends of the valve pipe, a valve cover is installed on the top bolt of the upper valve casing, a valve wheel is installed on the top end of the valve cover in a latch way, a valve rod is embedded at the bottom end of the valve wheel, one end of the valve rod is positioned in the valve pipe, a valve plug is installed on the bottom bolt of the valve rod, a valve seat is welded in the valve pipe, and the valve plug is positioned right above the valve port of the valve seat, the utility model discloses a filter screen plate which is installed in a buckling way in a liquid inlet cavity is convenient for filtering liquid or gas which is discharged from the liquid inlet cavity to a liquid outlet cavity by utilizing the filter screen plate, thereby avoiding the blockage of impurities along with the liquid or gas entering the liquid outlet cavity and the valve seat, causing the valve seat to be blocked, and improving the service life and sealing effect of the whole stop valve, and liquid or gas can be filtered, so that the requirement of the stop valve on the quality of the discharged liquid and gas is met.

Description

Stop valve

Technical Field

The utility model relates to a stop valve field specifically is a stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The connection mode is divided into three types: flange connection, screw thread connection and welding connection. After the self-sealing valve appears, the medium flow direction of the stop valve is changed to enter the valve cavity from the upper part of the valve clack, at this time, under the action of medium pressure, the force for closing the valve is small, the force for opening the valve is large, and the diameter of the valve rod can be correspondingly reduced. At the same time, this type of valve is also relatively tight under the action of the medium. The valve of China has been specified in the 'three-transformation and three-transformation' way, and the flow direction of the stop valve is uniformly from top to bottom. When the stop valve is opened, the opening height of the valve clack is 25% -30% of the nominal diameter, the flow reaches the maximum, and the valve reaches the full-open position. Therefore, the fully open position of the shut-off valve is determined by the stroke of the valve clack.

However, the existing shut-off valve has the following disadvantages:

1. the existing stop valve has poor sealing effect, and sundries are easily accumulated in the valve seat to influence the sealing effect of the valve.

2. The existing stop valve is difficult to maintain and repair the interior of the stop valve, and the service life of the stop valve is short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stop valve to solve current stop valve among the above-mentioned background art, sealed effect is relatively poor, and the inside easy long-pending debris that stays of disk seat influences the valve seal effect, and current stop valve is difficult to maintain the maintenance to its inside, the shorter problem of life.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a stop valve, includes the valve pipe, the intercommunication is inlayed on valve pipe top has last valve casing, the linking flange has all been welded at valve pipe both ends, go up valve casing top bolt and install the valve gap, valve gap top eye-splice is installed the valve wheel, valve wheel bottom is inlayed and is had the valve rod, valve rod one end is located valve intraduct, valve rod bottom bolt installs the valve plug, valve intraduct welding has the disk seat, the valve plug is located directly over the disk seat valve port.

Preferably, the feed liquor chamber and play liquid chamber have been seted up to the valve pipe is inside, the disk seat is located the feed liquor chamber and goes out between the liquid chamber, feed liquor intracavity portion buckle is installed and is filtered the otter board, through the filter otter board of feed liquor intracavity portion buckle installation, conveniently utilize to filter the otter board and discharge to the liquid or the gas that goes out the liquid chamber to the feed liquor chamber and filter to avoid impurity along with liquid or gas entering into in liquid chamber and the disk seat, cause the jam to the disk seat, the condition that influences the sealed disk seat of valve plug appears, the life and the sealed effect of whole stop valve have been improved, can also filter liquid or gas, the demand of stop valve to the gaseous quality of discharge liquid has been satisfied.

Preferably, the guiding gutter has been seted up to feed liquor chamber bottom surface, valve pipe bottom rotary mounting has the dirt storage tank, dirt storage tank top and the inside intercommunication each other of guiding gutter, the guiding gutter of seting up through feed liquor chamber bottom surface facilitate to filter the otter board and filter accumulational impurity water conservancy diversion to the inside bottom of guiding gutter, and through the dirt storage tank of the rotatory installation of valve pipe bottom, the dirt dust of the impurity that the otter board was separated is conveniently stayed to the long-pending accumulation to carry out periodic cleaning to it, guarantee the inside cleanness of stop valve.

Preferably, valve pipe top surface mosaic has spacing pipe, spacing pipe box is detained in the valve rod surface, valve rod surface mosaic has spacing lug, spacing lug buckle and spacing intraductal, through the spacing pipe of valve pipe top surface mosaic, do benefit to the spacing lug that cooperation valve rod surface was inlayed, highly inject the valve pipe displacement, avoid its excessive condition that rises to cause the stop valve to damage to take place.

Preferably, valve gap bottom surface bolt installs the waterproof ring cover, valve gap top surface welding has spacing seat, and through the waterproof ring cover of valve gap bottom surface bolt installation, the condition that liquid spills over the stop valve through the valve rod appears, simultaneously through the spacing seat of valve gap top surface welded, can prescribe a limit to valve wheel descending distance, avoids excessively rotatory valve wheel to lead to the valve rod to descend excessively to lead to the condition emergence of the impaired sealed effect of influence of disk seat.

Preferably, go up the valve casing inner wall bonding and have sealed gum cover, valve pipe bottom swivelling joint has the access cover, the access cover is located under the disk seat, through last valve casing inner wall bonded sealed gum cover, can further improve the sealed effect of whole valve body, through the access cover of valve pipe bottom swivelling joint installation, conveniently does benefit to and takes off the access cover according to the demand is rotatory, maintains the clearance to valve inside, has improved the maintenance convenience of whole stop valve.

The utility model provides a stop valve possesses following beneficial effect:

(1) the utility model discloses a filter plate of feed liquor intracavity portion buckle installation, the liquid or the gas that do benefit to utilize filter plate to discharge to the feed liquor chamber filters to the discharge liquid chamber to avoid impurity to lead to the fact the jam to the disk seat along with liquid or gaseous entering into the discharge liquid chamber and disk seat in, influence the condition appearance of the sealed disk seat of valve plug, improved the life and the sealed effect of whole stop valve, can also filter liquid or gas, satisfied the demand of stop valve to the gaseous quality of discharge liquid.

(2) The utility model discloses a guiding gutter that feed liquor chamber bottom surface was seted up, just, it filters accumulational impurity water conservancy diversion to the inside bottom of guiding gutter to do benefit to cross filter plate, through the dirty jar of storage of the rotatory installation of valve tube bottom, just, do benefit to long-pending impurity dust of filtering the separation of filter plate, so that regularly clear up it, guarantee the inside cleanness of stop valve, through the spacing pipe of valve pipe top surface inlay, just, do benefit to the spacing lug of cooperation valve rod surface inlay, highly inject the valve pipe displacement, avoid its excessive condition that rises to cause the stop valve to damage to take place.

(3) The utility model discloses a waterproof ring cover of valve gap bottom surface bolt installation, can avoid the condition that liquid spills over the stop valve through the valve rod to appear, simultaneously through the spacing seat of valve gap top surface welding, can inject valve wheel descending distance, avoid excessively rotatory valve wheel to lead to the valve rod to descend and excessively lead to the condition emergence of the impaired sealed effect of influence of disk seat, through last valve casing inner wall adhesive rubber sleeve, can further improve the sealed effect of whole valve body, through the access cover of valve pipe bottom swivelling joint, conveniently do benefit to and take off the access cover according to the demand rotation, maintain the clearance to valve inside, the maintenance convenience of whole stop valve has been improved.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the valve tube of the present invention;

fig. 3 is a schematic view of the valve cover structure of the present invention;

fig. 4 is a schematic view of the internal structure of the upper valve casing of the present invention.

In the figure: 1. a valve tube; 2. connecting flanges; 3. an upper valve shell; 4. a valve cover; 5. a limiting seat; 6. a valve wheel; 7. a valve stem; 8. a valve plug; 9. a limiting pipe; 10. a limiting bump; 11. a liquid inlet cavity; 12. a liquid outlet cavity; 13. a valve seat; 14. a filter screen plate; 15. a diversion trench; 16. an access cover; 17. a sewage storage tank; 18. a waterproof ring sleeve; 19. and (5) sealing the rubber sleeve.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-4, the utility model provides a technical solution: the utility model provides a stop valve, includes valve pipe 1, the intercommunication is inlayed on 1 top of valve pipe has last valve casing 3, linking flange 2 has all been welded at 1 both ends of valve pipe, go up 3 top bolts of valve casing and install valve gap 4, valve gap 4 top eye-splice installs valve wheel 6, valve wheel 6 bottom is inlayed and is had

valve rod

7, 7 one end of valve rod are located valve pipe 1 inside, valve rod 7 bottom bolts

install valve plug

8, 1 internal weld of valve pipe has disk seat 13, valve plug 8 is located directly over the disk seat 13 valve port.

Preferably, feed liquor chamber 11 and play liquid cavity 12 have been seted up to valve pipe 1 inside, disk seat 13 is located between feed liquor chamber 11 and the play liquid cavity 12, filter plate 14 is installed to the inside buckle in feed liquor chamber 11, and filter plate 14 through the inside buckle installation of feed liquor chamber 11 facilitates utilizing filter plate 14 to filter the liquid or the gas that feed liquor chamber 11 discharged to play liquid cavity 12 to avoid impurity along with liquid or gas entering into in liquid cavity 12 and disk seat 13, cause the jam to disk seat 13, the condition that influences 8 sealed disk seats 13 of valve plug appears, improved the life and the sealed effect of whole stop valve, can also filter liquid or gas, satisfied the demand of stop valve to the gaseous quality of discharge liquid.

Preferably, guiding gutter 15 has been seted up on 11 bottom surfaces in feed liquor chamber, valve pipe 1 bottom is rotatory installs and is stored up dirty jar 17, store up dirty jar 17 top and 15 inside intercommunication each other of guiding gutter, through the guiding gutter 15 that 11 bottom surfaces in feed liquor chamber were seted up, conveniently do benefit to and filter 14 and filter accumulational impurity water conservancy diversion to the inside bottom of guiding gutter 15, through the dirty jar 17 of storage of 1 bottom rotation of valve pipe, conveniently do benefit to long-pending impurity dust of leaving filter 14 institute separation to regularly clear up it, guarantee the inside cleanness of stop valve.

Preferably, 1 top surface mosaic of valve pipe has spacing pipe 9, spacing pipe 9 cover is detained in valve rod 7 surface, 7 surface mosaic of valve rod have spacing lug 10, in spacing lug 10 buckle and the spacing pipe 9, through the spacing pipe 9 of 1 top surface mosaic of valve pipe, conveniently do benefit to the spacing lug 10 of 7 surface mosaics of cooperation valve rod, highly inject valve pipe 7 displacement, avoid its excessive circumstances that rises and cause the stop valve to damage to take place.

Preferably, waterproof ring cover 18 is installed to valve gap 4 bottom surface bolt, valve gap 4 top surface welding has spacing seat 5, and waterproof ring cover 18 through valve gap 4 bottom surface bolt installation can avoid liquid to spill over the condition of stop valve through valve rod 7 and appear, simultaneously through valve gap 4 top surface welding's spacing seat 5, can prescribe a limit to valve wheel 4 descending distance, avoids excessively rotatory valve wheel 4 to lead to the valve rod 7 to descend and excessively to lead to the condition emergence of the impaired sealed effect of influence of disk seat 13.

Preferably, 3 inner walls of upper valve casing are bonded with sealed

gum cover

19, 1 bottom swivelling joint of valve pipe has access cover 16, access cover 16 is located under disk seat 13, through 3 inner walls of upper valve casing adhesive sealed gum covers 19, can further improve the sealed effect of whole valve body, through the access cover 16 of 1 bottom swivelling joint of valve pipe, conveniently do benefit to and take off access cover 16 according to the demand is rotatory, maintains the clearance to 1 inside of valve pipe, has improved the maintenance convenience of whole stop valve.

It should be noted that, when the stop valve works, the height of the valve rod 7 is adjusted by rotating the valve wheel 6 installed on the top end of the valve cover 4 in a buckling manner, so as to change the gap between the valve plug 8 and the valve seat 13 and adjust the flow of the stop valve, the filter screen plate 14 installed in the liquid inlet cavity 11 in a buckling manner is convenient to filter the liquid or gas discharged from the liquid inlet cavity 11 to the liquid outlet cavity 12 by using the filter screen plate 14, so as to avoid the situation that impurities enter the liquid outlet cavity 12 and the valve seat 13 along with the liquid or gas to block the valve seat 13 and influence the valve plug 8 to seal the valve seat 13, improve the service life and the sealing effect of the whole stop valve, and filter the liquid or gas, so as to meet the requirement of the stop valve on the quality of the discharged liquid or gas, and the impurities filtered and accumulated by the filter screen plate 14 are conveniently guided to the inner bottom end of the guide groove 15 by the guide groove 15 arranged on the bottom end surface of the liquid inlet cavity 11, the dirt storage tank 17 rotatably mounted at the bottom end of the valve tube 1 is convenient for accumulating and retaining impurity dust separated by the filter screen plate 14 so as to clean the dirt storage tank regularly and ensure the cleanness of the inside of the stop valve, the limit tube 9 embedded on the surface of the top end of the valve tube 1 is convenient for being matched with the limit lug 10 embedded on the surface of the valve rod 7 to limit the displacement height of the valve tube 7 so as to avoid the damage of the stop valve caused by excessive rise of the valve tube, the waterproof ring sleeve 18 mounted on the surface of the bottom end of the valve cover 4 is used for avoiding the liquid from overflowing the stop valve through the valve rod 7, meanwhile, the descending distance of the valve wheel 4 is limited by the limit seat 5 welded on the surface of the top end of the valve cover 4, the condition that the valve seat 13 is damaged and the sealing effect is influenced by excessively rotating the valve wheel 4 so as to excessively descend the valve rod 7 is avoided, and the sealing rubber sleeve 19 bonded on the inner wall of the valve housing 3 is used for further improving the sealing effect of the whole valve body, through the access cover 16 of the rotatory installation in valve pipe 1 bottom, conveniently do benefit to and take off the access cover 16 according to the demand is rotatory, maintain the clearance to valve pipe 1 inside, improved the maintenance convenience of whole stop valve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A shut-off valve comprising a valve tube (1), characterized in that: the valve comprises a valve pipe (1), wherein an upper valve casing (3) is embedded and communicated at the top end of the valve pipe (1), linking flanges (2) are welded at two ends of the valve pipe (1), a valve cover (4) is installed at the top end of the upper valve casing (3) through bolts, a valve wheel (6) is installed at the top end of the valve cover (4) through eye-splicing, a valve rod (7) is embedded at the bottom end of the valve wheel (6), one end of the valve rod (7) is located inside the valve pipe (1), a valve plug (8) is installed at the bottom end of the valve rod (7) through bolts, a valve seat (13) is welded inside the valve pipe (1), the valve plug (8) is located right above a valve port of the valve seat (13), a liquid inlet cavity (11) and a liquid outlet cavity (12) are formed inside the valve pipe (1), the valve seat (13) is located between the liquid inlet cavity (11) and the liquid outlet cavity (12), a screen plate (14) is installed inside the liquid inlet cavity (11) through buckle, a diversion groove (15) is formed in the bottom surface of the liquid inlet cavity (11), the valve pipe (1) bottom is rotatory to be installed and is stored up dirty jar (17), store up dirty jar (17) top and guiding gutter (15) inside intercommunication each other.

2. A shut-off valve as claimed in claim 1, wherein: valve pipe (1) top surface mosaic has spacing pipe (9), spacing pipe (9) cover is detained in valve rod (7) surface, valve rod (7) surface mosaic has spacing lug (10), in spacing lug (10) buckle and the spacing pipe (9).

3. A shut-off valve as claimed in claim 1, wherein: waterproof ring sleeves (18) are installed on the surface of the bottom end of the valve cover (4) through bolts, and limiting seats (5) are welded on the surface of the top end of the valve cover (4).

4. A shut-off valve as claimed in claim 1, wherein: go up valve casing (3) inner wall bonding has sealed gum cover (19), valve pipe (1) bottom swivelling joint has access cover (16), access cover (16) are located valve seat (13) under.