CN216618577U

CN216618577U - Novel floating ring rubber seal butterfly valve

Info

Publication number: CN216618577U
Application number: CN202123132820.0U
Authority: CN
Inventors: 肖羽白; 吴园园; 阎玲
Original assignee: TIELING LIANGGONG VALVE CO LTD
Current assignee: TIELING LIANGGONG VALVE CO LTD
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-27
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a novel floating ring rubber sealing butterfly valve, which comprises a valve body, wherein an end cover is arranged at the bottom of the valve body, a friction pad is arranged at the upper side of the end cover, a first shaft opening is formed at the bottom of the valve body, a bearing is arranged on the inner ring surface of the first shaft opening, a first valve shaft is arranged on the inner ring surface of the bearing, the first valve shaft is contacted with the friction pad, a butterfly plate is connected with the first valve shaft and a second valve shaft in an inserting way, flat keys are respectively arranged between the butterfly valve and the first valve shaft and between the butterfly valve and the second valve shaft, the novel floating ring rubber sealing butterfly valve is characterized in that a valve plate sealing ring is positioned in a groove of a valve plate and a sealing ring pressing plate, the contact surface is a bearing surface, a gap is formed between the top of an outer ring of the sealing ring and the bottom of a radial groove, when the butterfly valve plate is closed, the valve plate rubber ring is extruded and stamped by media and extends along the gap between the top of the outer ring and the bottom of the groove, the sealing ring has simpler structure and is easier to process.

Description

Novel floating ring rubber seal butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a novel floating ring rubber seal butterfly valve.

Background

The floating rubber ring seal is composed of a valve plate, a valve plate seal ring (EPDM), a seal ring pressing plate and a valve seat seal ring (stainless steel) to form a seal pair. Wherein the valve plate sealing ring is arranged in the grooves of the valve plate and the pressure plate and is connected together through a fastening screw, and the structure is detachable and can be replaced on line.

The structure of this kind of rubber circle is simpler, and easily processing has reduced the processing cost, has equal sealed effect with the sealing washer that uses before, but the structure before is complicated, and processing installation is all inconvenient to be not fit for using and promoting.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a novel floating ring rubber sealing butterfly valve, which solves the problems of complex structure, inconvenience in processing and difficulty in replacement in the prior art.

In order to realize the purpose, the utility model is realized by the following technical scheme: a novel floating ring rubber sealing butterfly valve comprises a valve body, wherein an end cover is arranged at the bottom of the valve body, a friction pad is arranged on the upper side of the end cover, a first shaft opening is arranged at the bottom of the valve body, a bearing is arranged on the inner ring surface of the first shaft opening, a first valve shaft is arranged on the inner ring surface of the bearing and is contacted with the friction pad, a second shaft opening is formed in the top of the valve body, a second valve shaft is rotatably arranged in the second shaft opening, a butterfly plate is arranged in the valve body, the butterfly plate is connected with the first valve shaft and the second valve shaft in an inserting way, flat keys are arranged between the butterfly valve and the first valve shaft and between the butterfly valve and the second valve shaft, the top of the valve body is provided with a gear box, the shaft end of the gear box is connected with the second valve shaft, and a first sealing structure is arranged on the rear side wall surface of the butterfly plate, and a second sealing structure is arranged between the second valve shaft and the valve body.

Preferably, the first sealing structure comprises a sealing ring pressing plate, the sealing ring pressing plate is arranged on the rear side wall surface of the butterfly plate, a plurality of bolts are inserted into the sealing ring pressing plate, the bolts are spirally connected with the butterfly plate, a butterfly plate sealing ring is arranged between the butterfly plate and the sealing ring pressing plate, a valve sealing ring is arranged between the butterfly plate sealing ring and the valve body, the valve sealing ring is in contact with the butterfly plate sealing ring, and the valve sealing ring is connected with the valve body.

Preferably, the cross sections of the upper end and the lower end of the rear side of the butterfly plate are in a step shape, the cross sections of the upper end and the lower end of the butterfly plate sealing ring are in a T shape, and the butterfly plate sealing ring is respectively connected with the sealing ring pressing plate and the butterfly plate in an inserting mode.

Preferably, be equipped with a pair of cubic arch on the preceding lateral wall face of butterfly plate, cubic arch with butterfly plate integrated into one piece, the rear side lateral wall face of butterfly plate just is located center department and has seted up the arc recess, the preceding lateral wall face of butterfly plate just is located center department and is equipped with the arc arch, the arc arch with the radian of arc recess is the same, the bellied diameter of arc equals a pair of cubic bellied interval.

Preferably, the second sealing structure comprises a pressure pad, the pressure pad is arranged between the second valve shaft and the valve body, and a plurality of stuffing boxes are embedded on the outer side of the pressure pad.

Preferably, the block-shaped protrusion close to the lower side is provided with a pin hole, a bolt is inserted into the pin hole, and the bolt sequentially penetrates through the butterfly plate and the first valve shaft.

Advantageous effects

The utility model provides a novel floating ring rubber sealing butterfly valve. The novel floating ring rubber seal butterfly valve has the advantages that the valve plate seal ring is positioned in the groove of the valve plate and the seal ring pressure plate, the contact surface is a pressure bearing surface, a gap is formed between the top of the outer ring of the seal ring and the bottom of the radial groove, and when the butterfly valve is closed, the valve plate rubber ring is extruded and stamped by media and extends to the gap between the top of the outer ring and the bottom of the groove along the radial direction, so that sealing is realized.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic side sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the position a of the present invention.

In the figure: 1. a valve body; 2. an end cap; 3. a friction pad; 4. a bearing; 5. a first valve shaft; 6. a flat bond; 7. a butterfly plate; 8. a seal ring pressing plate; 9. a butterfly plate sealing ring; 10. a valve seal ring; 11. a stuffing box; 12. a pressure pad; 13. a second valve shaft; 14. a gear case; 15. and (4) a bolt.

Detailed Description

The technical solutions 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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a novel floating ring rubber sealing butterfly valve comprises a valve body 1, wherein an end cover 2 is installed at the bottom of the valve body 1, a friction pad 3 is installed on the upper side of the end cover 2, a first shaft opening is formed in the bottom of the valve body 1, a bearing 4 is installed on the inner ring surface of the first shaft opening, a first valve shaft 5 is installed on the inner ring surface of the bearing 4, the first valve shaft 5 is in contact with the friction pad 3, a second shaft opening is formed in the top of the valve body 1, a second valve shaft 13 is rotatably installed in the second shaft opening, a butterfly plate 7 is installed in the valve body 1, the butterfly plate 7 is connected with the first valve shaft 5 and the second valve shaft 13 in an inserting mode, a flat key 6 is installed between the butterfly valve and the first valve shaft 5 and the second valve shaft 13, a gear box 14 is installed at the top of the valve body 1, and the shaft end of the gear box 14 is connected with the second valve shaft 13, and a first sealing structure is arranged on the rear side wall surface of the butterfly plate 7, and a second sealing structure is arranged between the second valve shaft 13 and the valve body 1.

The first sealing structure comprises a sealing ring pressing plate 8, the sealing ring pressing plate 8 is arranged on the rear side wall surface of a butterfly plate 7, a plurality of bolts are inserted into the sealing ring pressing plate 8, the bolts are spirally connected with the butterfly plate 7, a butterfly plate 7 sealing ring is arranged between the butterfly plate 7 and the sealing ring pressing plate 8, a valve sealing ring 10 is arranged between the butterfly plate 7 sealing ring and the valve body 1, the valve sealing ring 10 is in contact with the butterfly plate 7 sealing ring, and the valve sealing ring 10 is connected with the valve body 1.

The cross sections of the upper end and the lower end of the rear side of the butterfly plate 7 are in a step shape, the cross sections of the upper end and the lower end of a sealing ring of the butterfly plate 7 are in a T shape, and the sealing ring of the butterfly plate 7 is connected with the sealing ring pressing plate 8 and the butterfly plate 7 in an inserting mode.

Be equipped with a pair of cubic arch on the preceding lateral wall face of butterfly plate 7, cubic arch with butterfly plate 7 integrated into one piece, the rear side lateral wall face of butterfly plate 7 just is located center department and has seted up the arc recess, the preceding lateral wall face of butterfly plate 7 just is located center department and is equipped with the arc arch, the arc arch with the radian of arc recess is the same, the bellied diameter of arc equals a pair of cubic bellied interval.

The second sealing structure comprises a pressure pad 12, the pressure pad 12 is arranged between the second valve shaft 13 and the valve body 1, and a plurality of stuffing boxes 11 are embedded on the outer side of the pressure pad 12.

The block-shaped bulge close to the lower side is provided with a pin hole, a bolt 15 is inserted in the pin hole, and the bolt 15 sequentially penetrates through the butterfly plate 7 and the first valve shaft 5.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes thereof are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in the present disclosure.

Example (b): this novel floating ring rubber seal butterfly valve, valve plate sealing washer are fixed a position at valve plate and seal ring clamp plate 8's ditch inslot, and the contact surface is the bearing surface promptly, has the clearance between the outer loop top of sealing washer and the tank bottom of radial slot, and valve plate rubber circle receives extrusion and medium punching press when the butterfly valve closes and extends along the clearance between radial outer loop top and the slot bottom, realizes sealedly.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The novel floating ring rubber sealing butterfly valve comprises a valve body (1) and is characterized in that an end cover (2) is installed at the bottom of the valve body (1), a friction pad (3) is installed on the upper side of the end cover (2), a first shaft opening is formed in the bottom of the valve body (1), a bearing (4) is installed on the inner ring surface of the first shaft opening, a first valve shaft (5) is installed on the inner ring surface of the bearing (4), the first valve shaft (5) is in contact with the friction pad (3), a second shaft opening is formed in the top of the valve body (1), a second valve shaft (13) is rotatably installed in the second shaft opening, a butterfly plate (7) is installed in the valve body (1), the butterfly plate (7) is connected with the first valve shaft (5) and the second valve shaft (13) in an inserting mode, and a flat key (6) is installed between the butterfly valve and the first valve shaft (5) and the second valve shaft (13), a gear box (14) is installed at the top of the valve body (1), the shaft end of the gear box (14) is connected with the second valve shaft (13), a first sealing structure is installed on the rear side wall surface of the butterfly plate (7), and a second sealing structure is installed between the second valve shaft (13) and the valve body (1).

2. The novel floating ring rubber seal butterfly valve according to claim 1, wherein the first seal structure comprises a seal ring pressing plate (8), the seal ring pressing plate (8) is arranged on the rear side wall surface of a butterfly plate (7), a plurality of bolts are inserted into the seal ring pressing plate (8), the bolts are spirally connected with the butterfly plate (7), a butterfly plate seal ring (9) is arranged between the butterfly plate (7) and the seal ring pressing plate (8), a valve seal ring (10) is arranged between the butterfly plate seal ring (9) and the valve body (1), the valve seal ring (10) is in contact with the butterfly plate seal ring (9), and the valve seal ring (10) is connected with the valve body (1).

3. The novel floating ring rubber seal butterfly valve according to claim 2, wherein the cross sections of the upper end and the lower end of the rear side of the butterfly plate (7) are stepped, the cross sections of the upper end and the lower end of the butterfly plate seal ring (9) are both T-shaped, and the butterfly plate seal ring (9) is respectively connected with the seal ring pressing plate (8) and the butterfly plate (7) in an inserting manner.

4. The novel floating ring rubber seal butterfly valve according to claim 1, wherein a pair of block-shaped protrusions are arranged on a front side wall surface of the butterfly plate (7), the block-shaped protrusions and the butterfly plate (7) are integrally formed, an arc-shaped groove is formed in the center of the rear side wall surface of the butterfly plate (7), an arc-shaped protrusion is arranged in the center of the front wall surface of the butterfly plate (7), the arc-shaped protrusion has the same radian as the arc-shaped groove, and the diameter of the arc-shaped protrusion is equal to the distance between the pair of block-shaped protrusions.

5. The novel floating ring rubber seal butterfly valve according to claim 1, characterized in that the second seal structure comprises a pressure pad (12), the pressure pad (12) is arranged between the second valve shaft (13) and the valve body (1), and a plurality of stuffing boxes (11) are embedded on the outer side of the pressure pad (12).

6. The novel floating ring rubber seal butterfly valve according to claim 4, wherein a pin hole is formed in the block-shaped protrusion close to the lower side, a plug pin (15) is inserted into the pin hole, and the plug pin (15) sequentially penetrates through the butterfly plate (7) and the first valve shaft (5).