WO2024067663A1

WO2024067663A1 - Transverse rotary valve flap shielding valve capable of being updated online without disassembly

Info

Publication number: WO2024067663A1
Application number: PCT/CN2023/121879
Authority: WO
Inventors: 韩杰; 李来志
Original assignee: 沈阳耐蚀合金泵股份有限公司
Priority date: 2022-09-29
Filing date: 2023-09-27
Publication date: 2024-04-04
Also published as: CN115370759A

Abstract

The present invention relates to the field of drainage valves, and in particular to a transverse rotary valve flap shielding valve capable of being updated online without disassembly used in the field of electric power, metallurgy, desulfurization and denitrification, and the like. The transverse rotary valve flap shielding valve comprises a valve body (1). A valve rod I (5) and a valve rod II (10) are sequentially and longitudinally spaced apart at a certain distance on a valve cover (101) of the valve body (1); an up-down movement driving mechanism I is provided on the upper portion of the valve rod I (5); an up-down movement driving mechanism II is provided on the upper portion of the valve rod II (10); a small valve flap (3) is provided at the front end of the valve rod I (5); a large valve flap (2) is provided at the front end of the valve rod II (10); the large valve flap (2) is horizontally located on a valve port (19); the small valve flap (3) is arranged on the large valve flap (2); and the valve rod II (10) is provided with a rotary driving mechanism capable of providing torsion for the valve rod II (10). The present invention has characteristics of scratch resistance, corrosion resistance, high hardness, long service life, no internal leakage, no external leakage and the like.

Description

Laterally rotating disc shielding valve that can be updated online without disassembly

Technical Field

The present invention belongs to the field of water supply and drainage valves, and in particular relates to a transverse rotating disc shielding valve which can be updated online without disassembly in the fields of electric power, metallurgy, desulfurization and denitrification.

Background technique

Valves come in many varieties and specifications. They are important components in the fields of electricity, metallurgy, desulfurization and denitrification, and play a very important role in human production and life. Ordinary valves will form small gaps at the moment of opening and closing. It is inevitable that during use, the medium containing hard particles will form a high-speed scouring of the sealing surface, sometimes forming cavitation and other phenomena, causing valve internal leakage and short life.

Summary of the invention

The present invention aims to overcome the deficiencies of the prior art and provide a transverse rotating valve disc shielding valve which is resistant to abrasion and corrosion, has high hardness, has a long service life, has neither internal leakage nor external leakage, can be updated online without disassembly.

To solve the above-mentioned problem, the present invention is achieved as follows:

A transversely rotating valve disc shielding valve which can be updated online without disassembly comprises a valve body; a valve stem I and a valve stem II are longitudinally arranged in sequence at a certain interval on the valve cover of the valve body; an up-and-down moving drive mechanism I is arranged on the upper part of the valve stem I; an up-and-down moving drive mechanism II is arranged on the upper part of the valve stem II; a small valve disc is arranged at the front end of the valve stem I; a large valve disc is arranged at the front end of the valve stem II; the large valve disc is horizontally located above the valve port; the small valve disc is placed above the large valve disc; and a rotating drive mechanism which can provide torque to the valve stem II is arranged on the valve stem II.

As a preferred solution, the rotary drive mechanism of the present invention adopts a dividing mechanism.

Furthermore, the dividing mechanism of the present invention includes a dial, an inclined bridge, dividing teeth and a spur rack; the valve stem II is connected to the dial through a flat key; the inclined bridge adopts a two-section semicircular structure and fastens the dial through a top screw; the dial is fixed on the dividing teeth; the front end of the spur rack is clamped with the tooth groove of the dividing teeth.

Furthermore, a universal joint is provided at the front end of the valve stem II of the present invention; a pin hinged to the large valve disc is laterally provided on the universal joint.

Furthermore, the diameter of the large valve flap of the present invention is more than twice the diameter of the valve port, and the rotation angle of the large valve flap is 0°≤a≤360°.

Furthermore, the valve stem II of the present invention is arranged at a certain angle to the vertical direction.

The invention has the advantages of abrasion resistance, corrosion resistance, high hardness, long service life, no internal leakage and no external leakage, etc., and can solve the problems of internal leakage of ordinary valve sealing surface and high maintenance cost. The gap between the valve stem and the valve cover of the invention is isolated by the shielding sleeve to ensure The medium in the valve body is protected from leakage, and the static seal between the large valve disc and the valve port is used to ensure that the medium does not leak internally. The large valve disc can be controlled to rotate a certain angle at any time to avoid the flushing position, thereby realizing the online replacement of the valve disc. The diameter of the large valve disc of the present invention is several times the diameter of the valve port and can be rotated online to change the position to re-form a static seal, without stopping for maintenance, without clogging, and the service life is several times that of ordinary valves.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

FIG1 is a schematic structural diagram of the present invention in a valve closed state;

FIG2 is a schematic structural diagram of the present invention in a valve open state;

FIG3 is a schematic structural diagram of a valve in a closed state when the valve stem is tilted according to the present invention;

FIG. 4 is a schematic structural diagram of the valve in an open state when the valve stem is tilted according to the present invention.

In the figure: 1. valve body; 101. valve cover; 2. large valve disc; 3. small valve disc; 4. shielding sleeve I; 5. valve stem I; 6. hand wheel I; 7. hand wheel II; 801. bearing seat I; 802. bearing seat II; 901. copper nut I; 902. copper nut II; 10. valve stem II; 11. dial; 12. inclined bridge; 13. dividing tooth; 14. flat key; 15. shielding sleeve II; 16. top screw; 17. universal joint; 18. pin; 19. valve port.

Detailed ways

As shown in the figure, a transversely rotating valve disc shielding valve which can be updated online without disassembly comprises a valve body 1; a valve stem I5 and a valve stem II10 are longitudinally arranged in sequence at a certain interval on the valve cover 101 of the valve body 1; an up and down moving drive mechanism I is provided on the upper part of the valve stem I5; an up and down moving drive mechanism II is provided on the upper part of the valve stem II10; a small valve disc 3 is provided at the front end of the valve stem I5; a large valve disc 2 is provided at the front end of the valve stem II10; the large valve disc 2 is horizontally located above the valve port 19; the small valve disc 3 is placed above the large valve disc 2; and a rotating drive mechanism that can provide torque to the valve stem II10 is provided.

The rotary drive mechanism of the present invention can adopt a dividing mechanism. As shown in the figure, the dividing mechanism of the present invention includes a dial plate 11, an inclined bridge 12, dividing teeth 13 and a straight rack; the valve stem II10 is connected to the dial plate 11 through a flat key 14; the inclined bridge 12 adopts a two-section semicircular structure and fastens the dial plate 11 through a top screw 16; the dial plate 11 is fixed on the dividing teeth 13; the front end of the straight rack is clamped with the tooth groove of the dividing teeth 13.

A universal joint 17 is disposed at the front end of the valve stem II10 of the present invention; a pin 18 hinged to the large valve flap 2 is disposed transversely on the universal joint 17 .

The up and down moving driving mechanism I described in the present invention includes a handwheel I6, a bearing seat I801 and a copper nut I901; the copper nut I901 is driven by rotating the handwheel I6 to drive the valve stem I5 to move longitudinally; the driving mechanism II includes a handwheel II7, a bearing seat II802 and a copper nut II902; the copper nut II902 is driven by rotating the handwheel II7 to drive the valve stem II10 to move longitudinally.

The diameter of the large valve flap 2 of the present invention is more than twice the diameter of the valve port 19, and the rotation angle of the large valve flap 2 is 0°≤a≤360°. The diameter of the large valve flap 2 is several times the diameter of the valve port, at least twice; a new static seal can be re-formed by rotating a certain angle.

In the present invention, a shielding sleeve I4 is fixedly provided at the contact position between the valve stem I5 and the valve cover 101 in the inner cavity of the valve body 1; a shielding sleeve II15 is fixedly provided at the contact position between the valve stem II10 and the valve cover 101 in the inner cavity of the valve body 1. The large valve flap 2 of the present invention is made of tungsten steel. Tungsten steel has a series of excellent properties such as high hardness, wear resistance, and corrosion resistance, and can maximize the service life of the valve under harsh working conditions, especially high pressure difference, scouring, cavitation, etc.

The present invention sets a valve stem I5 in the channel of the valve body 1 perpendicular to the pipeline direction. The gap between the valve stem I5 and the valve cover is isolated by the shielding sleeve I4, and the medium here cannot leak out. A channel is obliquely arranged above the valve body 1 and a valve stem II10 is set. The gap of the valve cover 101 matched with the valve stem II10 is isolated by the shielding sleeve II15, and the medium here cannot leak out. The static seal between the large valve flap 2 and the valve port 19 ensures that the medium has no internal leakage. At this point, a shielding valve with no internal leakage and no external leakage is formed. The large valve flap 2 can also be controlled to rotate to a certain angle at any time to avoid the flushing position, thus forming a horizontal rotating valve flap shielding valve that can be updated online without disassembly. The present invention sets two valve stems on a valve. The valve stem I5 is used to press the large valve flap 2 to apply pressure to it to assist it in forming a static seal, and the valve stem II10 provides torque and opening and closing to the large valve flap 2. The indexing mechanism composed of the scale plate 11, the inclined bridge 12 and the indexing teeth 13 applies torque to the valve stem II10 and fixes it, which finally acts on the valve stem II10. The valve stem II10 rotates the large valve disc 2 through the universal joint 17 to change the flushing position.

In the specific design, the present invention mainly includes a valve body 1, a large valve disc 2, a small valve disc 3, a shielding sleeve I4, a valve stem I5, a handwheel I6, a handwheel II7, a bearing seat I801, a bearing seat II802, a copper nut I901, a copper nut II902, a valve stem II10, a dial 11, an inclined bridge 12, a dividing tooth 13, a flat key 14, a shielding sleeve II15 and other components.

When the valve is closed, the copper nut II902 is driven by turning the hand wheel II7, and the valve stem II10 drives the large valve disc 2 through the universal joint 17. The large valve disc 2 is connected to the valve stem II10 through the pin 18 and is inclined downward close to the valve port and close to it. The valve stem II10 is provided with a flat key 14 connected to the dial 11. The inclined bridge 12 is two semicircles, and there is a top screw 16 at each end. Tighten the top screw 16 and hold the dial 11 tightly so that it cannot rotate. The front end of the spur rack is stuck in the tooth groove of the indexing tooth 13. The valve stem I5 is driven downward by turning the hand wheel I6. The front end of the valve stem I5 is provided with a small valve disc 3 to apply pressure to the large valve disc 2 to form a static seal.

When the valve is opened, first reverse the hand wheel I6 to lift the valve stem I5 to provide enough space for the large valve disc 2, and then reverse the hand wheel II7 to lift the large valve disc 2 to a certain height. When the flushed position cannot form a static seal, loosen the top screw 16 of the inclined bridge 12, lift the straight rack, and rotate the dial 11 to drive the valve stem II10 to a certain angle. At this time, the flushed position is avoided and a new static seal is formed with the valve port. At this time, tighten the top screw and lock the straight rack. When the valve has serious internal leakage, the present invention can extend the service life of the valve and reduce the cost of shutdown and maintenance by rotating the large valve disc to a certain angle and forming a new static seal.

3 and 4, FIG. 3 is a schematic diagram of the structure of the valve in the closed state when the valve stem is inclined in the present invention, and FIG. 4 is a schematic diagram of the structure of the valve in the closed state when the valve stem is inclined in the present invention. This is a schematic diagram of the structure of the valve in the open state when the valve stem is tilted in the present invention. A channel is tilted above the valve body 1 and a valve stem II10 is provided. The gap between the valve stem II10 and the valve cover 101 is isolated by the shielding sleeve II15, and the medium here cannot leak out. The static seal between the large valve flap 2 and the valve port 19 ensures that the medium has no internal leakage. Thus, a shielding valve with no internal leakage and no external leakage is formed. The large valve flap 2 can also be controlled to rotate to a certain angle at any time to avoid the flushing position, thus forming a horizontal rotating valve flap shielding valve that can be updated online without disassembly.

In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "set", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

A transversely rotating valve disc shielding valve that can be updated online without disassembly comprises a valve body (1); characterized in that a valve stem I (5) and a valve stem II (10) are longitudinally arranged in sequence at a certain distance on the valve cover (101) of the valve body (1); an up-and-down moving drive mechanism I is arranged on the upper part of the valve stem I (5); an up-and-down moving drive mechanism II is arranged on the upper part of the valve stem II (10); a small valve disc (3) is arranged at the front end of the valve stem I (5); a large valve disc (2) is arranged at the front end of the valve stem II (10); the large valve disc (2) is horizontally located above the valve port (19); the small valve disc (3) is placed above the large valve disc (2); and a rotating drive mechanism that can provide torque to the valve stem II (10) is provided on the valve stem II (10).
According to claim 1, the transverse rotary disc shielding valve that can be updated online without disassembly is characterized in that the rotary drive mechanism adopts a dividing mechanism.
According to claim 2, the transverse rotary valve disc shielding valve that can be updated online without disassembly is characterized in that: the indexing mechanism includes a dial (11), an inclined bridge (12), indexing teeth (13) and a straight rack; the valve stem II (10) is connected to the dial (11) through a flat key (14); the inclined bridge (12) adopts a two-section semicircular structure and fastens the dial (11) through a top screw (16); the dial (11) is fixed on the indexing teeth (13); the front end of the straight rack is clamped with the tooth groove of the indexing teeth (13).
According to claim 1, 2 or 3, the transverse rotating valve disc shielding valve that can be updated online without disassembly is characterized in that: a universal joint (17) is provided at the front end of the valve stem II (10); and a pin shaft (18) hinged to the large valve disc (2) is provided laterally on the universal joint (17).
According to claim 4, the transverse rotating valve disc shielding valve that can be updated online without disassembly is characterized in that the diameter of the large valve disc (2) is more than twice the diameter of the valve port (19), and the rotation angle of the large valve disc (2) is 0°≤a≤360°.
According to claim 5, the transverse rotating valve disc shielding valve that can be updated online without disassembly is characterized in that the valve stem II (10) is set at a certain angle to the vertical direction.