CN213039839U - Pneumatic butt-clamp type soft sealing butterfly valve - Google Patents

Abstract

The utility model discloses a pneumatic butt-clamping type soft sealing butterfly valve, which belongs to the technical field of butterfly valves and comprises a valve seat and an inner pipe, wherein the middle part of the inner wall of the valve seat is fixedly connected with a valve plate, the top end of the valve plate is embedded into a valve rod above the valve seat, a folding sealing ring is sleeved outside the valve plate, a soft rubber ring A and a soft rubber ring B are adhered to the inner wall of the valve seat at two sides of the valve plate, the valve plate can rotate to a normally open state in the valve seat under the driving of the valve rod, the folding sealing ring at the outer side of the valve plate presses the soft rubber ring A and the soft rubber ring B to rotate along with the valve plate, the folding sealing ring is impacted, the folding sealing ring is adhered to the inner wall of the valve seat when the valve plate rotates to the normally closed state, the soft rubber ring A and the soft rubber ring B are pressed to be, and a pressure sealing structure is arranged outside the valve plate.

Description

Pneumatic butt-clamp type soft sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field especially relates to a pneumatic wafer formula soft sealing butterfly valve.

Background

The double-clip type pneumatic soft seal butterfly valve is used as a component for realizing the on-off and flow control of a pipeline system, and is widely applied to various fields of petroleum, chemical engineering, metallurgy, water and electricity and the like. In the known butterfly valve technology, a sealing structure is often adopted as a sealing form, and the sealing material is rubber, polytetrafluoroethylene or the like. Due to the limitation of structural characteristics, the high-temperature-resistant, high-pressure-resistant, corrosion-resistant and abrasion-resistant industries are not suitable.

A pneumatic butterfly valve of patent number CN201620473040.2 belongs to the relevant technical field of valve components and parts. The device mainly comprises a front cover assembly and a rear cover assembly which are fixedly connected, wherein a cylinder mounting plate is fixedly connected to the rear cover assembly, and a cylinder is fixedly connected to the cylinder mounting plate; the front cover assembly and the rear cover assembly are both provided with mounting holes, and a sealing sliding plate is arranged between the two mounting holes; a piston rod of the air cylinder is hinged with one end of a valve rod, the other end of the valve rod is hinged with the sliding plate, and the valve rod is assembled on the rear cover assembly through a hinged shaft; the valve rod is positioned right above the mounting hole. The utility model discloses a to the improvement of butterfly valve slide propulsion structure, the air consumption that has reduced the cylinder under the condition of not changing and applying in sealed slide thrust has guaranteed the stable safe operation of train.

1. The valve plate of the existing pneumatic butt-clamping type soft sealing butterfly valve is provided with a plurality of layers of soft and hard stacked sealing rings, when the valve plate is in a normally open state, the sealing surface of the valve plate is washed by a medium in a front face mode, and after a soft sealing belt in a metal sheet interlayer is washed, the sealing performance of the butterfly valve is directly influenced.

2. The existing pneumatic wafer type soft sealing butterfly valve is connected with the aid of a flange plate and an external pipeline, then the two disk bodies are locked with the aid of bolts, the joint of the disk bodies is mostly sealed by rubber sealing rings, the problem that liquid drips and leaks easily occur to the pneumatic wafer type soft sealing butterfly valve and the external pipeline joint when the sealing structure is used for a long time is solved, and therefore the pneumatic wafer type soft sealing butterfly valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pneumatic butt-clamping type soft sealing butterfly valve, the inner wall of a valve seat at two sides of a valve plate is adhered with a soft rubber ring A and a soft rubber ring B, when the valve plate can rotate to a normally open state in the valve seat under the drive of a valve rod, a folding sealing ring at the outer side of the valve plate presses the soft rubber ring A and the soft rubber ring B to rotate along with the valve plate, the folding sealing ring is impacted, the folding sealing ring is attached to the inner wall of the valve seat when the valve plate rotates to a normally closed state, the cheek edges of the soft rubber ring A and the soft rubber ring B are pressed and attached to the side surface of the valve plate under the pressure action of a medium to form a pressure sealing structure, and further, when the sealing performance of the folding sealing ring is poor, the outer side of the valve plate is provided with a pressure sealing structure, inner pipes which are outwards protruded are arranged in the calibers of flanges at two, at this moment, the inner pipe presses the corrugated rubber ring A and the corrugated rubber ring B to be embedded into the external pipeline, the corrugated rubber ring A and the corrugated rubber ring B are pressed to deform and are attached to the inner wall of the external pipeline, then the inner pipe is matched with the corrugated rubber ring A and the corrugated rubber ring B to form an embedded sealing structure, and the sealing performance of the external pipeline joint of the valve seat is improved.

The utility model provides a specific technical scheme as follows:

the utility model provides a pair of soft sealed butterfly valve of pneumatic wafer formula, including disk seat and inner tube, the inner wall middle part fixedly connected with valve plate of disk seat, and the top of valve plate is by the valve rod embedding of disk seat top, the folding type sealing washer has been cup jointed in the outside of valve plate, and the disk seat inner wall department solvent adhesion of valve plate both sides has soft rubber circle A, the disk seat inner wall department solvent adhesion that deviates from valve plate one side of soft rubber circle A has soft rubber circle B, and the circle body of soft rubber circle B and soft rubber circle A upwards the arch has the chin limit.

Optionally, the outer walls of the two sides of the valve seat are integrally formed with flanges, an inner pipe extends outwards from a disc opening in the middle of the flange, a corrugated rubber ring A and a corrugated rubber ring B are sequentially adhered to the surface of the inner pipe from outside to inside, and bolts are screwed on the edge of the disc body of the flange.

Optionally, the outer wall of the valve seat is coated with a metal rust preventive paint.

Optionally, the diameter of the orifice of the inner tube is smaller than the diameter of the outer interface of the valve seat.

The utility model has the advantages as follows:

1. the utility model discloses a disk seat inner wall bonding at the valve plate both sides has soft rubber circle A and soft rubber circle B, the valve plate can be when the disk seat internal rotation is to normally open state under the drive of valve rod, the soft rubber circle A of valve plate outside formula sealing washer oppression and soft rubber circle B heel rotate along with the valve plate, formula sealing washer receives the impact this moment, formula sealing washer laminating disk seat inner wall when the valve plate rotates normally closed state, the cheek limit pressurized subsides of soft rubber circle A and soft rubber circle B forms pressure seal structure to the side of valve plate under the pressure effect of medium this moment, and then when formula sealing washer leakproofness is bad in the formula of folding sealing washer, there is pressure seal structure still in the valve plate outside, the problem that the multilayer soft and hard sealing washer of having solved current pneumatic double-layered formula soft sealing butterfly valve receives to influence butterfly valve leakproofness after washing away.

2. The utility model discloses a set up outside bellied inner tube in the bore of disk seat both sides ring flange, use the bolt to connect the screw between the disk body soon after the ring flange of disk seat and the disk body joint of external pipeline to lock, the inner tube oppresses in corrugated rubber circle A and the corrugated rubber circle B embedding external pipeline this moment, corrugated rubber circle A and corrugated rubber circle B pressurized deformation laminating external pipeline inner wall this moment, and then inner tube cooperation corrugated rubber circle A and corrugated rubber circle B form the gomphosis seal structure, it has the leakproofness of outside pipeline kneck to promote the disk seat, the not good problem of the outside kneck leakproofness of current pneumatic butt clamp formula soft seal butterfly valve has been solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic diagram of an overall structure of a pneumatic wafer type soft sealing butterfly valve according to an embodiment of the present invention.

Fig. 2 is a sectional view of a valve seat of a pneumatic wafer type soft sealing butterfly valve according to an embodiment of the present invention.

In the figure: 1. a valve seat; 2. a valve plate; 3. a stacked seal ring; 4. a soft rubber ring A; 5. a soft rubber ring B; 6. a flange plate; 7. an inner tube; 8. a corrugated rubber ring A; 9. a corrugated rubber ring B; 10. And (4) bolts.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A pneumatic wafer type soft sealing butterfly valve according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.

Referring to fig. 1-2, the embodiment of the utility model provides a pair of soft butterfly valve of sealed of pneumatic wafer formula, including disk seat 1 and inner tube 7, disk seat 1's inner wall middle part fixedly connected with valve plate 2, and the top of valve plate 2 is embedded by the valve rod of disk seat 1 top, the outside of valve plate 2 has been cup jointed and has been folded formula sealing washer 3, and the bonding of the solvent of disk seat 1 inner wall department of valve plate 2 both sides has soft rubber circle a4, the bonding of the solvent of disk seat 1 inner wall department that deviates from valve plate 2 one side of soft rubber circle a4 has soft rubber circle B5, and the circle body of soft rubber circle B5 and soft rubber circle a4 upwards protrudes there is the chin limit.

Illustratively, a flexible rubber ring A4 and a flexible rubber ring B5 are adhered to the inner wall of a valve seat 1 on two sides of a valve plate 2, when the valve plate 2 is driven by a valve rod to rotate in the valve seat 1 to a normally open state, an outer side folding type sealing ring 3 of the valve plate 2 presses the flexible rubber ring A4 and the flexible rubber ring B5 to rotate along with the valve plate 2, the folding type sealing ring 3 is impacted, when the valve plate 2 rotates to a normally closed state, the folding type sealing ring 3 is attached to the inner wall of the valve seat 1, the cheek edges of the flexible rubber ring A4 and the flexible rubber ring B5 are pressed and attached to the side face of the valve plate 2 under the pressure action of a medium to form a pressure sealing structure, and further when the folding type sealing ring 3 is poor in sealing performance.

Referring to fig. 1, flanges 6 are integrally formed on the outer walls of two sides of the valve seat 1, an inner tube 7 extends out from a central opening of the flange 6, a corrugated rubber ring A8 and a corrugated rubber ring B9 are sequentially adhered to the surface of the inner tube 7 from outside to inside, and bolts 10 are screwed on the edge of the flange 6.

Illustratively, the inner pipes 7 protruding outwards are arranged in the calibers of the flanges 6 on two sides of the valve seat 1, the flanges 6 of the valve seat 1 are screwed with screw holes between the disks by using bolts 10 after being jointed with the disks of the external pipeline, at the moment, the inner pipes 7 press the corrugated rubber ring A8 and the corrugated rubber ring B9 to be embedded into the external pipeline, at the moment, the corrugated rubber ring A8 and the corrugated rubber ring B9 are pressed to deform and adhere to the inner wall of the external pipeline, further, the inner pipes 7 are matched with the corrugated rubber ring A8 and the corrugated rubber ring B9 to form an embedded sealing structure, and the sealing performance of the valve seat 1 at the interface of the external pipeline is improved.

Referring to fig. 1, the outer wall of the valve seat 1 is coated with a metallic rust inhibitive paint.

Illustratively, the metal rust inhibitive paint forms a rust inhibitive layer on the metal surface of the valve seat 1, preventing the valve seat 1 from rusting by moisture corrosion.

Referring to fig. 1-2, the orifice diameter of the inner tube 7 is smaller than the outer orifice diameter of the valve seat 1.

For example, a pipe body of which the inner pipe 7 is smaller than the diameter of the outer interface of the valve seat 1 can be embedded into an external pipeline which is matched and communicated with the valve seat 1.

The utility model relates to a soft sealed butterfly valve of pneumatic butt clamp formula, there are soft rubber circle A4 and soft rubber circle B5 at the 1 inner wall adhesion of disk seat of valve plate 2 both sides, valve plate 2 can be under the drive of valve seat 1 internal rotation to normally open state, valve plate 2 outside folding type sealing washer 3 oppresses soft rubber circle A4 and soft rubber circle B5 heel and rotates along with valve plate 2, folding type sealing washer 3 receives the impact this moment, folding type sealing washer 3 laminating disk seat 1 inner wall when valve plate 2 rotates to normally closed state, soft rubber circle A4 and soft rubber circle B5's chin limit pressurized is pasted to the side of valve plate 2 and is formed pressure seal structure under the pressure effect of medium this moment, and then when folding type sealing washer 3 leakproofness is bad, there is pressure seal structure still in the valve plate 2 outside, set up outside bellied inner tube 7 in the bore of disk seat 1 both sides ring flange 6, use bolt 10 to connect the screw between the disk body soon to lock after disk body joint of disk seat 1's ring 6 and external pipeline At this moment, the inner pipe 7 presses the corrugated rubber ring A8 and the corrugated rubber ring B9 to be embedded into the external pipeline, the corrugated rubber ring A8 and the corrugated rubber ring B9 are pressed to deform and adhere to the inner wall of the external pipeline, the inner pipe 7 is matched with the corrugated rubber ring A8 and the corrugated rubber ring B9 to form an embedded sealing structure, and the sealing performance of the interface of the external pipeline is improved on the valve seat 1.

It should be noted that, the utility model relates to a soft butterfly valve that seals of pneumatic wafer formula, including disk seat 1, valve plate 2, folding sealing washer 3, soft rubber circle A4, soft rubber circle B5, ring flange 6, inner tube 7, corrugated rubber circle A8, corrugated rubber circle B9, bolt 10, the part is general standard or the part that technical staff in the field knows, and its structure and principle all can learn through the technical manual or learn through conventional experimental method for this technical staff.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (4)

1. The utility model provides a soft sealed butterfly valve of pneumatic wafer formula, includes disk seat (1) and inner tube (7), its characterized in that: the utility model discloses a valve seat, including valve seat (2), valve seat (2) and soft rubber circle A (4), the valve seat (1) inner wall department solvent bonding that deviates from valve plate (2) one side of soft rubber circle A (4) has soft rubber circle B (5), and the circle body of soft rubber circle B (5) and soft rubber circle A (4) upwards the arch has the cheek limit, the valve seat middle part fixedly connected with valve plate (2) of valve seat (1), and the top of valve plate (2) is embedded into by the valve rod of valve seat (1) top, the outside of valve plate (2) has cup jointed folding sealing washer (3), and valve seat (1) inner wall department solvent bonding of valve plate (2) both sides has.

2. The pneumatically wafer-type soft seal butterfly valve of claim 1, wherein: the valve seat is characterized in that the outer walls of the two sides of the valve seat (1) are integrally formed with flange plates (6), the middle plate openings of the flange plates (6) extend outwards to form inner tubes (7), the surfaces of the inner tubes (7) are sequentially adhered with corrugated rubber rings A (8) and corrugated rubber rings B (9) from outside to inside, and bolts (10) are screwed on the edge threads of the plate body of the flange plates (6).

3. The pneumatically wafer-type soft seal butterfly valve of claim 1, wherein: the outer wall of the valve seat (1) is coated with metal antirust paint.

4. The pneumatically wafer-type soft seal butterfly valve of claim 1, wherein: the diameter of the orifice of the inner pipe (7) is smaller than the diameter of the outer interface of the valve seat (1).

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