CN215110562U - Three-eccentric center all-metal butterfly valve - Google Patents

Abstract

The utility model provides a three eccentric full metal butterfly valves, including valve body and disk seat, be fluidic circulation passageway in the valve body, valve body and disk seat set up the installation component that is used for disk seat and valve body relative position between the two fixed, the fluid circulation passageway setting is dodged to fixed position between installation component and valve body, the disk seat. The fixed position of installation component, valve body, disk seat each other in this scheme dodges the fluid and flows through the position setting, avoids installation fixed retaining member back retaining member to receive fluid impact and lead to stability reduction each other, the effectual sealing performance who improves three eccentric center all-metal butterfly valves.

Description

Three-eccentric center all-metal butterfly valve

Technical Field

The utility model belongs to the valve field especially relates to a three eccentric center all-metal butterfly valves.

Background

The valve seat and the valve body of the traditional three-eccentric all-metal butterfly valve are integrally formed, so that the relative position between the valve seat and the valve body is stable, but when the valve seat is damaged and needs to be replaced, the valve seat and the valve body need to be replaced together, and the required cost is high. In order to facilitate replacement of the valve seat and reduce cost, the valve seat and the valve body are split into two parts in the conventional three-eccentric all-metal butterfly valve, the valve seat is pressed through an outer pressing ring, and then the outer pressing ring and the valve body are connected through a locking piece, so that the valve seat is installed. However, when the outer pressing ring is adopted to press the valve seat, the outer pressing ring and the locking piece are both installed in a flow passage through which fluid passes, the locking piece is easy to loosen due to long-term scouring of the fluid, the installation position of the valve body is deviated, and the sealing performance of the three-eccentric-center all-metal butterfly valve is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a triple offset all-metal butterfly valve to improve the sealing performance of the triple offset all-metal butterfly valve.

In order to realize above-mentioned purpose and other relevant purposes, the utility model provides a three eccentric all metal butterfly valves, including valve body and disk seat, be fluidic circulation passageway in the valve body, valve body and disk seat are provided with the installation component that is used for disk seat and valve body relative position between the two to fix outward, the fluid circulation passageway setting is dodged to fixed position between installation component and valve body, the disk seat.

Further, the mounting assembly comprises two compression parts which are matched to compress the valve body and the valve seat.

Furthermore, the compressing parts are flanges, fluid circulation channels are formed in the two flanges, connecting holes are formed in the positions, close to the peripheries of the flanges, and the compressing bolts are inserted into the connecting holes in the two flanges to compress and fix the valve seat on the valve body.

Further, the mounting assembly comprises a fixing bolt, and the valve body and the valve seat are fixed through the fixing bolt.

Further, the mounting assembly comprises a fixing bolt and two pressing parts, and the two pressing parts are matched to press the valve body and the valve seat.

Furthermore, a groove is formed in the valve body, the groove is formed around the circumference of the valve body, a first mounting hole is formed in one side wall of the groove in a penetrating mode, a second mounting hole is formed in the valve seat corresponding to the first mounting hole, and the fixing bolt penetrates through the first mounting hole and the second mounting hole from the groove to enable the valve body and the valve seat to be fixed.

Further, the contact surface between the valve body and the valve seat is in a step shape, and a first gasket is arranged between the valve body and the valve seat.

Further, still include valve rod and valve plate, the valve rod passes valve body and valve plate fixed, the valve plate is located the circulation passageway of valve body, valve rod and valve body rotate to be connected.

Further, be provided with sealing washer and clamping ring on the valve plate, sealing washer and clamping ring all overlap and establish outside the valve plate, just cooperate between sealing washer and the disk seat to form sealed vice, the clamping ring compresses tightly the sealing washer and is fixed with the valve plate.

Furthermore, clearance fit is realized between the inner ring of the sealing ring and the outer diameter of the valve plate, and a second gasket is arranged between the circular surface of the pressing ring and the valve plate.

As mentioned above, the utility model discloses a three eccentric center all metal butterfly valves has following beneficial effect:

the valve seat and the valve body are two independent parts, so that the valve seat can be replaced conveniently.

Because the fixed positions of the mounting assembly, the valve body and the valve seat are mutually set to avoid the fluid flowing through the positions, the locking part is prevented from being impacted by the fluid after the fixed locking part is mounted, so that the stability between the locking part and the valve body is reduced, and the sealing performance of the triple eccentric all-metal butterfly valve is effectively improved.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention, showing a triple eccentric all-metal butterfly valve.

Fig. 2 is a schematic view of a sectional structure of a triple eccentric all-metal butterfly valve according to an embodiment of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic view of the installation relationship between the valve body and the valve seat in the embodiment of the present invention.

Fig. 5 is a schematic view of the installation relationship among the sealing ring, the valve plate and the pressing ring in the embodiment of the present invention.

Fig. 6 is a partial cross-sectional view at B-B in fig. 1.

Fig. 7 is a schematic structural diagram of a valve body in an embodiment of the present invention.

Detailed Description

Reference numerals in the drawings of the specification include: the valve comprises a valve seat 1, a first gasket 2, a sealing ring 3, a second gasket 4, a valve plate 5, a valve rod 6, a pressing ring 7, a hexagon socket head cap screw 8, a valve body 9, a flange 10, a first mounting hole 11, a second mounting hole 12, a compression bolt 13, a groove 14, a stepped hole 15, a mounting groove 16, a connecting hole 17, a medium inlet 18 and a medium outlet 19.

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Examples

As shown in fig. 1 to 7, the present embodiment provides a triple offset all-metal butterfly valve including a valve body 9, a valve seat 1, a valve stem 6, a valve plate 5, and a flange 10. The valve body 9 comprises a body and a guide part of the valve rod 6, wherein the body and the guide part are perpendicular to each other, the body is circular, and a fluid circulation channel is arranged in the body. The left side of the body is a media outlet 19 and the right side of the body is a media inlet 18. The body circumference is encircleed and is seted up recess 14, and the axial middle part position at the body is seted up to recess 14, and recess 14 runs through on the lateral wall that is close to medium export 19 one side and has seted up first mounting hole 11, and first mounting hole 11 is seted up along the body axial. Offer the shoulder hole 15 that matches with 9 contact surface shapes of valve body on the body side end face, this shoulder hole 15 includes first order ladder, second grade ladder and third grade ladder from outside to inside in proper order, and wherein the ladder face of third grade ladder is greater than first order ladder face and second grade ladder face, and first mounting hole 11 is seted up on third grade ladder face, and has seted up mounting groove 16 on the third grade ladder face with one heart, installs first packing ring 2 in the mounting groove 16. Ladder contact between disk seat 1 and the valve body 9 can play the positioning action for the installation of disk seat 1, realizes the quick location of disk seat 1 installation, increases the area of contact between disk seat 1 and the valve body 9 simultaneously to increase sealing performance between the two. And the third step surface is larger than the first step surface and the second step surface, so that a sufficient mounting position is provided for mounting the first gasket 2 and fixing the valve seat 1 and the valve body 9. The first gasket 2 is provided to increase the sealing performance between the valve seat 1 and the valve body 9.

The valve seat 1 is installed on one side of a medium outlet 19 of the body, a second mounting hole 12 is formed in the valve seat 1 corresponding to the first mounting hole 11, the second mounting hole 12 is a counter bore, the first mounting hole 11 and the second mounting hole 12 are screw holes, and the valve seat 1 and the valve body 9 are fixed by inserting the first mounting hole 11 and the second mounting hole 12 through fixing bolts. The body is provided with a groove 14 for facilitating the installation of the fixing bolt.

The valve rod 6 passes through the valve body 9 and is fixed with the valve plate 5, and the valve rod 6 is connected with the valve body 9 in a rotating mode. The valve plate 5 is mounted between the medium inlet 18 and the medium outlet 19. The valve plate 5 is provided with a sealing ring 3 and a pressing ring 7 for pressing the sealing ring 3 tightly, the sealing ring 3 and the pressing ring 7 are both sleeved on the valve plate 5, and the pressing ring 7 and the valve plate 5 are fixed through a hexagon socket head cap screw 8. Clearance fit between 3 inner circles of sealing washer and the 5 external diameters of valve plate, the fit clearance between 3 inner circles of sealing washer and the valve plate 5 is 2mm in this embodiment. The sealing ring 3 and the sealing surface of the valve seat 1 are matched with each other to form a sealing pair, and the valve seat 1 and the sealing ring 3 are both made of all-metal materials and made of stellite alloy through surfacing welding. In addition, a second gasket 4 is provided between the sealing ring 3 and the valve plate 5 to increase the sealing performance between the sealing ring 3 and the valve plate 5. Clearance fit between sealing washer 3 and the valve plate 5 external diameter for there is certain radial movement space when sealing washer 3 installs, can be through opening and shutting valve plate 5 many times so that sealing washer 3 automatically regulated its and the relative relation between the disk seat 1.

The flange 10 is provided with two, and two flanges 10 set up relatively, and valve body 9 and disk seat 1 set up between two flanges 10, and the fitting surface of flange 10 and valve body 9 and disk seat 1 is the ladder face, and two flanges 10 are clamping status to valve body 9 and disk seat 1. Connecting holes 17 are formed in the two flanges 10, and the flanges 10 are used for pressing the valve seat 1 on the valve body 9 through installing the pressing bolts 13 in the connecting holes 17 so as to ensure the installation stability of the valve seat 1. The matching surfaces of the flange 10, the valve body 9 and the valve seat 1 are stepped surfaces so as to prevent the flange 10 from moving up and down along the direction of the valve rod 6.

During concrete implementation, disk seat 1 and valve body 9 are independent fashioned part in this scheme, compare with current disk seat 1 and valve body 9 integrated into one piece, when disk seat 1 damages to need to be changed, this scheme only need change disk seat 1 can, and need not to change valve body 9 together, can effectual reduce cost. The fixation of the valve body 9 and the valve seat 1 is achieved by installing fixing bolts from inside the groove 14 of the valve body 9 toward the valve seat 1, instead of installing fixing bolts at a position where fluid can flow to achieve the fixation of the valve body 9 and the valve seat 1, because: if the fixing bolt installation position is fluid process position, along with the fluid flow in-process, fixing bolt can receive the powerful washing of fluid, leads to fixing bolt not hard up and makes the skew take place for disk seat 1 position, leads to the sealing performance to descend, and this scheme has just avoided the emergence of this problem. The setting of flange 10 satisfies the demand of user to flange 10 on the one hand, and on the other hand, the setting of flange 10 can compress tightly disk seat 1, further prescribes a limit to the relative position between disk seat 1 and the valve body 9, avoids three eccentric center all-metal butterfly valves use in-process disk seat 1 to take place offset. The valve seat 1 and the sealing ring 3 are made of metal materials, so that the wear resistance between the valve seat and the sealing ring is improved, and metal sealing is realized.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a three eccentric center all metal butterfly valves, its characterized in that includes valve body and disk seat, be fluidic circulation passageway in the valve body, valve body and disk seat are provided with the installation component that is used for the relative position between the disk seat and the valve body between the two to be fixed, the fluid circulation passageway setting is dodged to the fixed position between installation component and valve body, the disk seat.

2. The triple offset all metal butterfly valve of claim 1, wherein the mounting assembly includes two compression members that cooperate to compress the valve body and the valve seat.

3. The triple offset all-metal butterfly valve according to claim 2, wherein the pressing member is a flange, the two flanges are both provided with a fluid passage therein, and a connecting hole is formed near the circumference of the flange, and the pressing bolt is inserted into the connecting hole of the two flanges to press and fix the valve seat to the valve body.

4. A triple offset all metal butterfly valve according to claim 1, wherein said mounting assembly comprises a fixing bolt, and said valve body and said valve seat are secured by said fixing bolt.

5. The triple offset all metal butterfly valve of claim 1, wherein the mounting assembly includes a retaining bolt and two compression members that cooperate to compress the valve body and the valve seat.

6. The triple offset all-metal butterfly valve according to claim 4 or 5, wherein the valve body has a recess formed therein, the recess is formed around a circumference of the valve body, a first mounting hole is formed through a side wall of the recess, a second mounting hole is formed in the valve seat corresponding to the first mounting hole, and the fixing bolt is inserted through the first mounting hole and the second mounting hole from the recess to fix the valve body and the valve seat.

7. A triple offset all metal butterfly valve according to claim 6, wherein the interface between the valve body and the valve seat is stepped, and a first gasket is disposed between the valve body and the valve seat.

8. A triple offset all metal butterfly valve according to claim 1, further comprising a valve stem secured through the valve body and a valve plate positioned within the flow passage of the valve body, the valve stem rotatably coupled to the valve body.

9. The triple offset all-metal butterfly valve according to claim 8, wherein the valve plate is provided with a sealing ring and a pressing ring, the sealing ring and the pressing ring are both sleeved outside the valve plate, a sealing pair is formed between the sealing ring and the valve seat in a matching manner, and the pressing ring presses the sealing ring and is fixed with the valve plate.

10. A triple offset all metal butterfly valve according to claim 9, wherein said inner ring of said seal ring is in clearance fit with the outer diameter of said valve plate, and a second gasket is disposed between said circular face of said clamping ring and said valve plate.

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