CN216951738U

CN216951738U - Combined valve seat structure with pre-tightening adjustable function

Info

Publication number: CN216951738U
Application number: CN202220414060.8U
Authority: CN
Inventors: 周卫华; 张明霞; 陈德亮; 谭秀琼
Original assignee: Chongqing Kete Industrial Valve Co ltd
Current assignee: Chongqing Kete Industrial Valve Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-12
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses a combined valve seat structure with a pre-tightening adjustable function, which belongs to the technical field of mechanical valves and comprises a valve body, wherein a valve core is arranged in the center of the valve body, the valve core is axially arranged along the inner cavity of the valve body, a valve seat is inserted in the right side of the valve body, the valve seat is sleeved outside the valve core, a pre-tightening fixing mechanism is arranged on the right side of the valve body, the pre-tightening fixing mechanism comprises a top ring and a clamping sleeve, the top ring is abutted against the end part of the valve seat, the clamping sleeve is fixedly connected with the right end of the valve body, the top ring is limited by the clamping sleeve, so that the inner end of a jacking bolt presses the outer end of the valve seat to fix the valve seat in the valve body and tightly press the valve seat to prevent the valve seat from loosening, the problem of the axial-flow clamping sleeve type valve structure axial clearance is solved, the axial clearance of the valve can be completely eliminated by adopting the structure, the integral rigidity of the valve is improved, the vibration in the working process is reduced, and the service life of the valve is effectively prolonged, and the noise of the medium flowing in the valve is reduced.

Description

Combined valve seat structure with pre-tightening adjustable function

Technical Field

The utility model relates to the technical field of mechanical valves, in particular to a combined valve seat structure with a pre-tightening adjustable function.

Background

The valves are control parts in fluid delivery systems, have functions of stopping, adjusting, guiding, preventing counter-flow, stabilizing pressure, shunting or overflowing and pressure relief, and the like, are used for valves of fluid control systems, from the simplest stop valves to various valves used in extremely complex automatic control systems, have quite a variety of varieties and specifications, can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and are divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard customized valves and the like according to materials.

Install case and disk seat in the valve, reach the effect of opening and close through the cooperation of case and disk seat, among the prior art, axial compressor cutting ferrule formula valve's disk seat is used for leaving the clearance between cutting ferrule and the axle bed between the mounting, leads to the valve overall rigidity lower, leads to the vibration easily in valve working process, leads to the valve life-span to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a combined valve seat structure with a pre-tightening adjustable function, which can completely eliminate the axial clearance of an axial flow ferrule type valve, so that the valve seat mounting structure is more compact, the integral rigidity of the valve is improved, and the vibration in the working process of the valve is reduced.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a combination formula valve disk seat structure with adjustable function of pretension, includes the valve body, the valve body center is provided with the case, the case sets up along the inner chamber axial of valve body, the valve body right side is inserted and is equipped with the disk seat, the case outside is located to the disk seat cover, the right side of valve body is provided with pretension fixed establishment, pretension fixed establishment includes top circle and cutting ferrule, the top circle offsets with the disk seat tip, cutting ferrule and valve body right-hand member fixed connection.

According to a preferable scheme of the utility model, a plurality of clamping sleeve jacks are formed in the clamping sleeve in an array manner, a plurality of tightening screw holes are uniformly distributed in the tightening sleeve, the tightening screw holes and the clamping sleeve jacks are arranged in a one-to-one correspondence manner, tightening bolts are inserted into the clamping sleeve jacks, and the tightening bolts are in threaded connection with the tightening screw holes.

According to a preferable scheme of the utility model, the aperture of the clamping sleeve jack is larger than the radius of the head of the puller bolt, the inner wall of the clamping sleeve jack is provided with internal threads, the outer end of the inner cavity of the clamping sleeve jack is in threaded connection with a blind plug, and the inner end of the blind plug abuts against the puller bolt.

As a preferable scheme of the utility model, the inner end of each blind plug is provided with a spring washer and a flat gasket, the flat gasket and the spring washer are sequentially arranged from inside to outside, and the flat gasket is propped against the outer end of the jacking bolt.

According to a preferable scheme of the utility model, inner hexagonal grooves are formed in the centers of the outer sides of the puller bolt and the blind plug, a limiting rod is arranged at the inner end of the blind plug, the flat gasket and the spring washer are sleeved on the limiting rod, and the radius of the limiting rod at the inner end of the blind plug is smaller than that of the inner hexagonal groove at the outer end of the puller bolt.

According to a preferable scheme of the utility model, the inner wall of the right end of the valve body is provided with an annular clamping groove, the outer wall of the clamping sleeve is provided with a fixed clamping edge, and the fixed clamping edge is clamped and fixed in the annular clamping groove.

As a preferable scheme of the present invention, the ferrule includes a main ring and a connecting edge, and the main ring and the connecting edge are fixedly connected by a connecting bolt.

As a preferred scheme of the utility model, the side wall of the cutting sleeve is provided with an open-loop notch, and the cutting sleeve is made of hard spring steel.

As a preferable scheme of the utility model, clamping grooves are formed in the two sides, corresponding to the open-loop notch, of the inner ring of the cutting sleeve.

As a preferred scheme of the utility model, a wear-resistant backing ring is padded between the valve seat and the top ring, a butt-joint ring groove is formed in one side of the wear-resistant backing ring, which faces the top ring, and the butt-joint ring groove is arranged corresponding to the inner end of the puller bolt.

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

this scheme is through setting up pretension fixed establishment, the cutting ferrule in the pretension fixed establishment is fixed with the valve body, after the puller bolt passed cutting ferrule screw in puller screw hole, the inner end of puller bolt offsets with the outer end of disk seat, carry on spacingly to the top circle through the cutting ferrule, make the inner end of puller bolt exert pressure to the outer end of disk seat, fix the disk seat in the valve body, and jack up the disk seat, prevent that the disk seat is not hard up, the structure axial clearance problem of axial compressor cutting ferrule formula valve has been solved, adopt this structure can eliminate valve axial clearance completely, the valve bulk rigidity has been improved, reduce the vibration in the course of the work, and then effectively improved the life of valve, and the noise that the medium flows in the valve has been reduced.

Drawings

Fig. 1 is a perspective view of a pretensioning fixing mechanism in a first embodiment of the present invention.

Fig. 2 is a sectional view structural view of the present invention.

Fig. 3 is an enlarged view of the utility model at a in fig. 2.

Fig. 4 is a perspective view of a ferrule in accordance with an embodiment of the present invention.

Fig. 5 is a perspective view of a pretension fixing mechanism in a second embodiment of the present invention.

Fig. 6 is a left perspective view of a ferrule in a second embodiment of the utility model.

The reference numbers in the figures illustrate:

1. a valve body; 2. a valve core; 3. a valve seat; 4. pre-tightening the fixing mechanism; 5. a top ring; 6. a card sleeve; 7. tightly propping the screw hole; 8. a ferrule insertion hole; 9. jacking the bolt; 10. blind plugs; 11. a flat gasket; 12. a spring washer; 13. an annular neck; 14. fixing the clamping edge; 15. opening a ring gap; 16. a clamping groove; 17. a wear-resistant backing ring; 18. butting ring grooves; 19. a main ring; 20. a connecting edge; 21. and connecting the bolts.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1-4, a combined valve seat structure with a pre-tightening adjustable function includes a valve body 1, a valve core 2 is disposed in the center of the valve body 1, the valve core 2 is axially disposed along an inner cavity of the valve body 1, a valve seat 3 is inserted in the right side of the valve body 1, the valve seat 3 is sleeved outside the valve core 2, a pre-tightening fixing mechanism 4 is disposed on the right side of the valve body 1, the pre-tightening fixing mechanism 4 includes a top ring 5 and a clamping sleeve 6, the top ring 5 abuts against the end of the valve seat 3, and the clamping sleeve 6 is fixedly connected with the right end of the valve body 1.

Specifically, a plurality of cutting ferrule jacks 8 are formed in the cutting ferrule 6 in an array mode, a plurality of jacking screw holes 7 are evenly distributed in the jacking ring 5, the jacking screw holes 7 and the cutting ferrule jacks 8 are arranged in a one-to-one mode, jacking bolts 9 are inserted into the cutting ferrule jacks 8, and the jacking bolts 9 are in threaded connection with the jacking screw holes 7.

In this embodiment, through the tight screw 7 in top of the cooperation of the tight bolt 9 in top that sets up for the inner end of the tight bolt 9 of top exerts pressure to the outer end of disk seat 3, compresses tightly disk seat 3, makes pretension fixing mechanism 4 keep the tight effect in top to the outer end of disk seat 3.

Specifically, the aperture of cutting ferrule jack 8 is greater than the radius of puller bolt 9 head, and the inner wall of cutting ferrule jack 8 is provided with the internal thread, and 8 inner chamber outer ends threaded connection of cutting ferrule jack have blind stopper 10, and the inner end and the puller bolt 9 of blind stopper 10 offset.

In this embodiment, through the blind plug 10 that sets up, tightly seal the tight bolt 9 top, the tight bolt 9 corrosion of limit top when effectively avoiding the tight bolt 9 of top not hard up.

Specifically, the inner end of each blind plug 10 is provided with a spring washer 12 and a flat washer 11, the flat washers 11 and the spring washers 12 are sequentially arranged from inside to outside, and the flat washers 11 abut against the outer end of the puller bolt 9.

In this embodiment, the flat gasket 11 and the spring washer 12 are arranged to ensure the tightening effect of the blind plug 10 on the tightening bolt 9.

Specifically, the outer side centers of the puller bolt 9 and the blind plug 10 are both provided with hexagon socket head cap grooves, the inner end of the blind plug 10 is provided with a limiting rod, the limiting rod is sleeved with the flat gasket 11 and the spring washer 12, and the radius of the limiting rod at the inner end of the blind plug 10 is smaller than the hexagon socket head cap grooves at the outer end of the puller bolt 9.

In this embodiment, through the hexagon socket head cap recess that sets up, be convenient for at clamping sleeve jack 8's narrow and small space internal rotation puller bolt 9 and blind stopper 10 to the tight bolt 9 outside in top can be inserted to the inner end gag lever post of blind stopper 10, guarantees the tight effect in top of blind stopper 10.

Specifically, the inner wall of the right end of the valve body 1 is provided with an annular clamping groove 13, the outer wall of the clamping sleeve 6 is provided with a fixing clamping edge 14, and the fixing clamping edge 14 is clamped and fixed in the annular clamping groove 13.

In this embodiment, through ring groove 13 and the fixed card limit 14 that sets up for cutting ferrule 6 can the joint be fixed in 1 outer end of valve body, guarantees cutting ferrule 6's normal work.

Specifically, the ferrule 6 comprises a main ring 19 and a connecting edge 20, and the main ring 19 and the connecting edge 20 are fixedly connected through a connecting bolt 21.

In this embodiment, the circular cutting ferrule 6 formed by the main ring 19 and the connecting edge 20 is convenient to install, the main ring 19 is firstly clamped into the right section of the valve body 1, and then the main ring 19 is fixed by the connecting edge 20.

Specifically, a wear-resistant backing ring 17 is padded between the valve seat 3 and the top ring 5, a butt-joint annular groove 18 is formed in one side, facing the top ring 5, of the wear-resistant backing ring 17, and the butt-joint annular groove 18 corresponds to the inner end of the puller bolt 9.

In this embodiment, through the wear-resisting backing ring 17 that sets up, reduce the extrusion in the 9 inner ends of puller bolt to the disk seat 3 outside, effectively avoided the deformation of disk seat 3 that 9 inner ends of puller bolt and disk seat 3 contact position stress concentration lead to, improved disk seat 3's life, effectively reduced cost of maintenance.

Example two:

referring to fig. 5-6, in the present embodiment, other structures are the same as those in the first embodiment, except that the side wall of the cutting ferrule 6 is provided with an open-loop notch 15, and the cutting ferrule 6 is made of hard spring steel. Through the open-loop notch 15 that sets up for cutting ferrule 6 forms open-loop structure, the installation of the cutting ferrule 6 of being convenient for.

Specifically, the clamping grooves 16 are formed in the two sides of the inner ring of the clamping sleeve 6 corresponding to the open-loop notch 15.

In this embodiment, the clamping groove 16 is provided to facilitate the butt joint of the cutting ferrule 6 and the tool.

The working principle is as follows: when the valve is installed, the valve seat 3 is inserted from the right side of the valve body 1, the valve seat 3 is sleeved on the outer wall of the valve core 2, then the top ring 5 is inserted into the right section of the valve body 1, then the snap spring clamp is inserted into the clamping groove 16, the clamping sleeve 6 is contracted, the clamping sleeve 6 is inserted into the right end of the valve body 1, the snap spring clamp is released after the fixing clamping edge 14 is aligned with the annular clamping groove 13, the fixing clamping edge 14 is clamped into the annular clamping groove 13, the clamping sleeve 6 is fixed at the right end of the valve body 1, the clamping sleeve jacks 8 are aligned with the jacking screw holes 7 one by one, the jacking bolts 9 are inserted into the clamping jacks 8, the inner ends of the jacking bolts 9 are transmitted into the jacking screw holes 7 until the inner ends of the jacking bolts 9 abut against one side of the outer end of the valve seat 3, the clamping sleeve bolts 9 are continuously screwed, and the jacking bolts 9 press the outer end of the valve seat 3 through the matching of the top rings 5 and 6, compress tightly valve seat 3, then put into flat gasket 11 and spring washer 12 in proper order in a plurality of cutting ferrule jacks 8 to go into blind plug 10 in cutting ferrule jack 8 internal rotation, compress tightly and the shutoff in the outside of puller bolt 9, effectively prevent the corrosion of puller bolt 9 when avoiding puller bolt 9 not hard up.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to cover the technical scope of the present invention, the technical solutions and the modifications thereof according to the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a combination formula valve seating structure with adjustable function of pretension, includes valve body (1), its characterized in that: the valve body (1) center is provided with case (2), case (2) set up along the inner chamber axial of valve body (1), valve seat (3) are inserted on valve body (1) right side, case (2) outside is located in disk seat (3) cover, the right side of valve body (1) is provided with pretension fixed establishment (4), pretension fixed establishment (4) are including top circle (5) and cutting ferrule (6), top circle (5) and disk seat (3) tip counterbalance, cutting ferrule (6) and valve body (1) right-hand member fixed connection.

2. The combined valve seat structure with the pre-tightening adjustable function as claimed in claim 1, wherein: a plurality of clamping sleeve jacks (8) are formed in the clamping sleeve (6) in an array mode, a plurality of jacking screw holes (7) are evenly distributed in the jacking ring (5), the jacking screw holes (7) and the clamping sleeve jacks (8) are arranged in a one-to-one correspondence mode, jacking bolts (9) are inserted into the clamping sleeve jacks (8), and the jacking bolts (9) are in threaded connection with the jacking screw holes (7).

3. The combined valve seat structure with pre-tightening adjustable function as claimed in claim 2, wherein: the diameter of cutting ferrule jack (8) is greater than the diameter of puller bolt (9) head, the inner wall of cutting ferrule jack (8) is provided with the internal thread, and cutting ferrule jack (8) inner chamber outer end threaded connection has blind stopper (10), the inner end and the puller bolt (9) of blind stopper (10) offset.

4. The combined valve seat structure with pre-tightening adjustable function as claimed in claim 3, wherein: every the inner end of blind stopper (10) all is provided with spring washer (12) and plain washer (11), plain washer (11) and spring washer (12) set gradually from inside to outside, and plain washer (11) offset with puller bolt (9) outer end.

5. The combined valve seat structure with pre-tightening adjustable function as claimed in claim 4, wherein: the blind plug structure is characterized in that inner hexagonal grooves are formed in the centers of the outer sides of the puller bolt (9) and the blind plug (10), a limiting rod is arranged at the inner end of the blind plug (10), the limiting rod is sleeved with the flat gasket (11) and the spring washer (12), and the radius of the limiting rod at the inner end of the blind plug (10) is smaller than the inner hexagonal groove in the outer end of the puller bolt (9).

6. The combined valve seat structure with the pre-tightening adjustable function as claimed in claim 1, wherein: annular clamping groove (13) have been seted up to the right-hand member inner wall of valve body (1), the outer wall of cutting ferrule (6) is provided with fixing clip limit (14), fixing clip limit (14) joint is fixed in annular clamping groove (13).

7. The combined valve seat structure with the pre-tightening adjustable function as claimed in claim 1, wherein: the clamping sleeve (6) comprises a main ring (19) and a connecting edge (20), and the main ring (19) and the connecting edge (20) are fixedly connected through a connecting bolt (21).

8. The combined valve seat structure with the pre-tightening adjustable function as claimed in claim 1, wherein: an open-loop notch (15) is formed in the side wall of the clamping sleeve (6), and the clamping sleeve (6) is made of hard spring steel.

9. The combined valve seat structure with pretension adjustable function according to claim 8, characterized in that: and clamping grooves (16) are formed in the two sides, corresponding to the open-loop notches (15), of the inner ring of the clamping sleeve (6).

10. The combined valve seat structure with the pre-tightening adjustable function as claimed in claim 1, wherein: the valve seat is characterized in that a wear-resistant backing ring (17) is arranged between the valve seat (3) and the top ring (5) in a padding mode, a butt joint annular groove (18) is formed in the wear-resistant backing ring (17) towards one side of the top ring (5), and the butt joint annular groove (18) corresponds to the inner end of the puller bolt (9).