CN210687051U - Rubber sleeve gate valve - Google Patents

Abstract

The utility model relates to a rubber sleeve gate valve, including valve body, flashboard and operating device, the valve body is equipped with medium transfer passage and perpendicular to medium transfer passage's flashboard movable channel, medium transfer passage's both ends respectively inlay and are equipped with an annular rubber disk seat, have the becket with the coaxial setting of this rubber disk seat in the rubber disk seat, and this becket is located one side that the rubber disk seat is close to interior terminal surface, be equipped with on the outer terminal surface of rubber disk seat and lean on the shoulder that leans on in the valve body terminal surface and be located the bulge loop between shoulder and the becket, when this rubber sleeve gate valve of arc surface that has on the interior terminal surface of rubber disk seat set up toward another rubber disk seat protrusion is in the open mode, the arc surface negative pitch cooperation of two rubber disk seats and the opposite vertex setting to there is the problem of damaging rubber bush in the rubber sleeve gate valve of solving current flashboard when putting down.

Description

Rubber sleeve gate valve

Technical Field

The utility model relates to a valve field specifically is a rubber sleeve gate valve.

Background

The gate valve is a control component in a pipeline conveying system and is used for controlling the opening and closing of a conveying channel. The gate valve generally includes a valve body, a gate plate, and an operating mechanism for operating the gate plate to move up and down, the valve body is provided with a medium conveying passage and a gate plate moving passage perpendicular to the medium conveying passage, the gate plate is then installed in the gate plate moving passage of the valve body, and the upper portion of the valve body is connected to the operating mechanism for operating the gate plate to move up and down. When the gate valve is actually used, the medium conveying channel of the valve body is communicated with an external pipeline, and when some medium materials containing particles, ash, ore pulp, powder and the like are conveyed, part of the medium materials are easily accumulated in the inner wall of the medium conveying channel of the valve body and the gate plate movable channel, so that the valve body is easily corroded and abraded, and the service life of the whole gate valve is influenced; meanwhile, due to the fact that medium materials are accumulated in the gate plate movable channel, normal closing of the gate plate can be affected, the air tightness of the closed state of the gate valve is affected, and abnormal abrasion is caused to the gate plate.

In order to solve the problem, for example, patent publication No. CN104235411A discloses a gate valve with a rubber sleeve, in which two annular rubber bushings are embedded on the valve body medium conveying channel on both sides of the gate plate to prevent the conveyed medium material from entering the inner walls of the gate plate moving channel and the valve body medium conveying channel of the valve body. Because the leakproofness of flashboard is realized through the sealing contact between the sealing end face of rubber bush and the flashboard, perhaps sealing contact between the sealing end face of two rubber bush, when the flashboard was opened, closely laminate between the sealing end face of two rubber bush, when the flashboard was put down, two rubber bush made two rubber bush's sealing end face hug closely respectively on two sides of flashboard were pushed open to the flashboard. Because the sealing end face of the rubber bushing in the prior art is generally a plane, the rubber bushing and the sealing end face are tightly attached without a gap, and because of installation errors, when the flashboard is put down, the flashboard can damage the rubber bushing, so that the sealing performance of the flashboard is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gum cover slide valve to there is the problem of damage rubber bush when solving current gum cover slide valve and putting down at the flashboard.

The specific scheme is as follows:

a rubber sleeve gate valve comprises a valve body, a gate and an operating mechanism, wherein the valve body is provided with a medium conveying channel and a gate movable channel vertical to the medium conveying channel, the gate is arranged in the gate movable channel of the valve body, the upper part of the valve body is connected with the operating mechanism for operating the gate to move up and down, two ends of the medium conveying channel are respectively embedded with an annular rubber valve seat, each rubber valve seat is provided with an outer ring surface matched with the inner wall of the medium conveying channel, an inner ring surface opposite to the outer ring surface, an inner end surface facing the inside of the medium conveying channel and an outer end surface facing the outside of the medium conveying channel, a metal ring coaxial with the rubber valve seat is arranged in the rubber valve seat, the metal ring is positioned on one side of the rubber valve seat close to the inner end surface, a shoulder abutted against the end surface of the valve body and a convex ring positioned between the shoulder and the metal ring are arranged, the inner end face of the rubber valve seat is provided with an arc face which is convexly arranged towards the other rubber valve seat, and when the rubber sleeve gate valve is in an open state, the arc faces of the two rubber valve seats are arranged in a butt-against mode in a negative-spacing matching mode.

Furthermore, the negative distance between the arc surfaces of the two rubber valve seats is-1.5 mm to-1.0 mm.

Further, the inner annular surface of the rubber valve seat is provided with an annular groove which is coaxially arranged with the inner annular surface, and the annular groove is positioned between the shoulder and the metal ring.

Furthermore, the annular groove is a groove with a circular arc-shaped cross section, and the lowest position of the annular groove is positioned between the vertex of the convex ring and the center of the cross section of the metal ring.

Furthermore, the outer end face of the valve body is provided with a groove matched with a shoulder of the rubber valve seat.

Furthermore, the circumference equipartition has a plurality of shrinkage pools on the outer terminal surface of rubber valve seat, and every shrinkage pool all communicates the becket, and all is equipped with a block on every shrinkage pool, and the interior terminal surface of block extends to in the shrinkage pool and with have certain clearance between the becket.

Further, the metal ring is a steel ring with a circular section.

Further, the bottom end of the flashboard is in a round and blunt pointed shape.

The utility model provides a gum cover slide valve compares with prior art and has following advantage: the utility model provides a gum cover slide valve is equipped with a bulge loop on the outer anchor ring of rubber disk seat, this bulge loop so that have certain clearance between the outer anchor ring of rubber disk seat and the medium transfer passage's of valve body inner wall, thereby improve the deflection of the interior terminal surface of this rubber disk seat, form the arc surface toward the protrusion setting of another rubber disk seat on the interior terminal surface of this rubber disk seat 4 on this basis, when making this gum cover slide valve be in the open mode, the arc surface of two rubber disk seats 4 forms the structure of horn mouth, consequently at the in-process that the flashboard removed downwards, be difficult for damaging the rubber disk seat.

Drawings

Fig. 1 shows a cross-sectional view of a gum gate valve.

Fig. 2 shows an enlarged view at a in fig. 1.

Fig. 3 shows a cross-sectional view of the rubber valve seat.

Fig. 4 shows an enlarged view at B in fig. 3.

Fig. 5 shows a schematic view of the shutter.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 to 4, the present embodiment provides a rubber sleeve gate valve including a valve body 1, a gate 2, and an operating mechanism 3. The valve body 1 is provided with a medium conveying passage 10 and a shutter plate moving passage 12 perpendicular to the medium conveying passage, the shutter plate 2 is installed in the shutter plate moving passage 12 of the valve body 1, and the upper portion of the valve body 1 is connected with an operating mechanism 3 for operating the shutter plate 2 to move up and down. The operating mechanism 3 in this embodiment is an air cylinder, and a piston rod 30 of the air cylinder is fixedly connected with the upper end of the shutter 2 to drive the shutter 2 to move up and down.

Referring to fig. 1 to 4, an annular rubber valve seat 4 is embedded in each of the medium conveying passages 10 on both sides of the shutter 2, and the rubber valve seat 4 has an outer annular surface 40 disposed to match the inner wall of the medium conveying passage 10, an inner annular surface 41 disposed opposite to the outer annular surface, an inner end surface 42 facing the inside of the medium conveying passage 10, and an outer end surface 43 facing the outside of the medium conveying passage 10. Have in the rubber valve seat 4 with the metal ring 5 of this rubber valve seat 4 concentric setting, this metal ring 5 is located one side that rubber valve seat 4 is close to interior terminal surface 42, this metal ring 5 can strengthen the intensity of rubber valve seat 4 and increase the resilience dynamics of rubber valve seat 4, can increase the leakproofness. The circular steel ring of the metal ring 5 in the embodiment has good mechanical property and is convenient to process.

A plurality of concave holes 44 are uniformly distributed on the circumference of the outer end surface 43 of the rubber valve seat 4, each concave hole 44 is communicated with the metal ring 5, a cap 45 is arranged on each concave hole 44, the cap 45 is composed of an end cover 450 and a column body 451, the inner end surface of the column body 451 extends into the concave hole 44 and has a certain gap with the metal ring 5, and the end cover 450 of the cap 45 is positioned outside the concave hole 44. When this gum cover slide valve external pipeline, the flange terminal surface of external pipeline contacts with the outer terminal surface of block 45 and exerts the pressure in shrinkage pool 44, then block 45 can transmit the pressure that the flange of external pipeline was exerted for rubber valve seat 4 and becket 5, make the interior terminal surface 42 of two rubber valve seats 4 on medium transfer passage 10 both sides can be more closely leaned on together, can be better prevent that the medium material from getting into in the flashboard movable channel 12 of valve body 1, and leave the clearance between the interior terminal surface of the cylinder 451 of block 45 and becket 5 and can guarantee that rubber valve seat 4 has sufficient deflection, in order to ensure that flashboard 2 can be closed smoothly.

The outer ring surface 40 of the rubber valve seat 4 is provided with a shoulder 46 on one side close to the outer end surface 43, the shoulder 46 leans against the outer end surface of the valve body 1, in order to facilitate the rubber valve seat 4 to be better embedded on the valve body 1, the outer end surface of the valve body 1 is provided with a groove 13 matched with the shoulder 46 of the rubber valve seat 4, the shoulder 46 is positioned in the groove 13 during installation, the positioning of the rubber valve seat 4 is facilitated, and a stepped path is formed between the inner ring surface 41 of the rubber valve seat 4 and the outside, so that the sealing performance of a conveying pipeline can be improved.

The middle of the outer annular surface 40 of the rubber valve seat 4 is provided with a convex ring 47 protruding from the outer annular surface 40, the convex ring 47 is arranged coaxially with the outer annular surface 40 of the rubber valve seat 4, the convex ring 47 is located between the shoulder 46 and the metal ring 5, and the position of the convex ring 47 between the shoulder 46 and the metal ring 5 is referred to as the position relation in the axial direction of the medium conveying channel 10. In this embodiment, the cross section of the convex ring 47 is preferably circular arc. The top end of the convex ring 47 abuts against the inner wall of the medium conveying channel 10 of the gate plate 2, so that a certain gap exists between the outer annular surface of the rubber valve seat 4 and the inner wall of the medium conveying channel 10 of the gate plate 2, the inner end surface 42 of the rubber valve seat 4 has a larger deformation amount, and the scheme that the following scheme can be realized under the condition of ensuring sealing only by the larger deformation amount compared with a rubber bushing in the prior art, namely, an arc surface 420 protruding towards another rubber valve seat 4 is formed on the inner end surface 42 of the rubber valve seat 4. When the rubber sleeve gate valve is closed, the gate plate 2 moves downwards, and the gate plate 2 extrudes the two rubber valve seats 4 to ensure that the inner end surfaces 42 of the two rubber valve seats 4 are respectively tightly attached to the two side surfaces of the gate plate 2, so that the gate of the medium conveying channel 10 is cut off; when the rubber sleeve gate valve is opened, the gate plate 2 moves upwards, the gate plate 2 is separated from the two rubber valve seats 4, and the arc surfaces 420 of the opposite inner end surfaces 42 of the two rubber valve seats 4 are butted and in sealing contact with each other so as to prevent medium materials from entering the gate plate movable channel 12 of the valve body 1.

Because the arc surface 420 that the inner end face 42 protrusion set up makes this gum cover slide valve be in open mode, the arc surface 420 of two rubber valve seats 4 forms the structure of horn mouth, consequently at the in-process that the flashboard 2 moved down, is difficult for haring rubber valve seat 4. The inner end surfaces 42 of the rubber valve seats 4 have larger deformation due to the existence of the convex ring 47, so when the rubber sleeve gate valve is in an open state, the arc surfaces 420 of the two rubber valve seats 4 are arranged oppositely in a negative spacing fit mode (the negative spacing in the embodiment is-1.5 mm to-1.0 mm) so as to ensure the sealing contact between the two rubber valve seats 4, while the outer ring surface of the rubber bushing in the prior art is arranged in a close fit mode with the inner wall of the medium conveying channel, so that the inner end surfaces of the two rubber bushings are only arranged in a close fit mode (and are zero spacing or negative spacing for solving zero spacing, and the spacing between the two rubber bushing is-0.2 mm to 0mm under the common condition), after the rubber bushing is used for a period of time, the sealing performance of the close fit between the inner end surfaces of the two rubber bushings is easy to cause sealing failure and leakage due to the aging of the rubber bushing material, the arc surfaces 420 of the two rubber valve seats 4 in the embodiment are arranged in a butting manner in a negative-spacing fit manner, so that after the rubber bushing material is aged for a period of time, the two rubber valve seats are arranged in a butting manner in a negative-spacing fit manner, and therefore a certain sealing allowance is provided, and the sealing performance of the rubber valve seats can still be ensured.

Referring to fig. 5, preferably, the bottom end of the shutter 2 is rounded and pointed so that the shutter 2 is pressed apart from the two rubber valve seats 4 and is not easily damaged.

Referring to fig. 1-4, as a preferred solution of this embodiment, an annular groove 48 is further provided on the inner annular surface 41 of the rubber valve seat 4, the annular groove 48 is located between the shoulder 46 and the metal ring 5, so that when the inner end surface 42 of the rubber valve seat 4 is deformed by the ascending or descending of the gate 2, the existence of the annular groove 48 changes the transmission of force, and the influence of the deformation of the inner end surface 42 on the outer end surface can be reduced, thereby preventing the outer end surface 43 of the rubber valve seat 4 from being loosened due to the frequent opening and closing of the gate 2, and affecting the sealing performance between the rubber sleeve gate valve and the connected conveying pipeline. The position of the annular groove 48 between the shoulder 46 and the metal ring 5 as used herein means a positional relationship in the axial direction of the medium transporting path 10.

Preferably, the annular groove 48 is a groove having a circular arc-shaped cross section, and the lowest point of the annular groove 48 is located between the apex of the male ring 47 and the center of the cross section of the metal ring 5.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a rubber sleeve gate valve, includes valve body, flashboard and operating device, and the valve body is equipped with medium transfer passage and perpendicular to medium transfer passage's flashboard movable channel, and the flashboard dress is in the flashboard movable channel of valve body, and the operating device that an operation flashboard reciprocated is connected on the upper portion of valve body, its characterized in that: the rubber valve seat is internally provided with a metal ring which is coaxially arranged with the rubber valve seat, the metal ring is positioned on one side of the rubber valve seat close to the inner end face, the outer end face of the rubber valve seat is provided with a shoulder which is abutted against the end face of the valve body and a convex ring which is positioned between the shoulder and the metal ring, the inner end face of the rubber valve seat is provided with an arc surface which is convexly arranged towards the other rubber valve seat, and when the rubber sleeve gate valve is in an open state, the arc surfaces of the two rubber valve seats are in negative-space fit and are arranged oppositely.

2. The gum cover gate valve of claim 1, wherein: the negative distance between the arc surfaces of the two rubber valve seats is-1.5 mm to-1.0 mm.

3. The gum cover gate valve of claim 1, wherein: the inner ring surface of the rubber valve seat is also provided with an annular groove which is coaxially arranged with the inner ring surface, and the annular groove is positioned between the shoulder and the metal ring.

4. The gum cover gate valve of claim 3, wherein: the circular groove is a groove with a circular arc-shaped section, and the lowest position of the circular groove is positioned between the top point of the convex ring and the center of the section of the metal ring.

5. The gum cover gate valve of claim 1, wherein: and the outer end face of the valve body is provided with a groove matched with the shoulder of the rubber valve seat.

6. The gum cover gate valve of claim 1, wherein: a plurality of concave holes are evenly distributed on the outer end face of the rubber valve seat in the circumferential direction, each concave hole is communicated with the metal ring, a cover cap is arranged on each concave hole, and the inner end face of each cover cap extends into each concave hole and has a gap with the metal ring.

7. The gum cover gate valve of claim 1, wherein: the metal ring is a steel ring with a circular section.

8. The gum cover gate valve of claim 1, wherein: the bottom end of the flashboard is in a sharp shape processed by rounding.

Images