阅读说明：本技术 一种新型防结焦闸阀 (Novel anti-coking gate valve ) 是由 田洪卫 欧丹 于 2019-11-01 设计创作，主要内容包括：本发明涉及一种新型防结焦闸阀,包括阀体,所述阀体顶部设有连接座,所述连接座内腔设有操作螺杆,所述连接座底部设有阀腔,且所述阀腔设于阀体内,所述阀腔内设有连接件,所述连接件底部连接有阀板,所述阀体底部设有阀座,所述阀座两端设有连接管,且所述阀板贯穿连接管顶部,所述阀腔与连接管之间设有通孔,所述通孔内设有密封圈,且所述密封圈与通孔之间密封连接,所述连接管内设有密封腔,且所述阀板设于密封腔内,所述密封腔底部设有密封槽,所述密封槽底部设有连通槽,所述连接管包括内管与外管,结构简单,设计合理,能够在阀体使用时防止结焦,而且能够解决阀门关闭不严的情况。(The invention relates to a novel anti-coking gate valve, which comprises a valve body, wherein the top of the valve body is provided with a connecting seat, the inner cavity of the connecting seat is provided with an operating screw rod, the bottom of the connecting seat is provided with a valve cavity, the valve cavity is arranged in the valve body, the valve cavity is internally provided with a connecting piece, the bottom of the connecting piece is connected with a valve plate, the bottom of the valve body is provided with a valve seat, two ends of the valve seat are provided with connecting pipes, the valve plate penetrates through the top of the connecting pipe, a through hole is arranged between the valve cavity and the connecting pipe, a sealing ring is arranged in the through hole and is in sealing connection with the through hole, a sealing cavity is arranged in the connecting pipe, the valve plate is arranged in the sealing cavity, the bottom of the sealing cavity is, but also can solve the problem of untight closing of the valve.)

1. The utility model provides a novel anti-coking gate valve, includes valve body (1), its characterized in that: the valve comprises a valve body (1), a connecting seat (2) is arranged at the top of the valve body (1), an operation screw (3) is arranged in an inner cavity of the connecting seat (2), a valve cavity (4) is arranged at the bottom of the connecting seat (2), the valve cavity (4) is arranged in the valve body (1), a connecting piece (5) is arranged in the valve cavity (4), a valve plate (6) is connected to the bottom of the connecting piece (5), a valve seat (7) is arranged at the bottom of the valve body (1), connecting pipes (8) are arranged at two ends of the valve seat (7), the valve plate (6) penetrates through the tops of the connecting pipes (8), a through hole (9) is formed between the valve cavity (4) and the connecting pipes (8), a sealing ring (10) is arranged in; a sealing cavity (11) is arranged in the connecting pipe (8), the valve plate (6) is arranged in the sealing cavity (11), a sealing groove (12) is arranged at the bottom of the sealing cavity (11), and a communicating groove (13) is arranged at the bottom of the sealing groove (12); connecting pipe (8) include inner tube (14) and outer tube (15), be equipped with cooling tube (16) between inner tube (14) and outer tube (15) and valve plate (6) both sides in valve pocket (4), intake pipe (17) and drain pipe (18) are connected respectively to cooling tube (16) both ends, valve body (1) one side is equipped with pressure pipe (19), just pressure pipe (19) and valve pocket (4) intercommunication.

2. The novel anti-coking gate valve of claim 1, characterized in that: the connecting seat (2) is internally provided with threads matched with the operating screw rod (3), and the top end of the operating screw rod (3) is provided with a handle.

3. The novel anti-coking gate valve of claim 1, characterized in that: the valve plate (6) is of a wedge-shaped structure, a sealing piece (20) is arranged at the bottom of the valve plate (6), and a sealing pressing block matched with the communicating groove (13) is arranged at the bottom of the sealing piece (20).

4. The novel anti-coking gate valve of claim 1, characterized in that: the radiating pipe (16) is arranged in an S shape, the inner side of the radiating pipe (16) is provided with a heat conducting sheet (21) and is attached to the inner pipe (14), and the inner side of the outer pipe (15) is provided with a heat insulating plate (16).

5. The novel anti-coking gate valve of claim 1, characterized in that: the air inlet pipe (17) is arranged on one side of the valve body (1), the drain pipe (18) is arranged at the bottom of the connecting pipe (8), and the drain pipe (18) is provided with a fixed valve.

6. The novel anti-coking gate valve of claim 1, characterized in that: the inner side of the sealing ring (10) is provided with a wedge-shaped surface, and the thickness of the top of the sealing ring (10) is smaller than that of the bottom.

Technical Field

The invention relates to a novel anti-coking gate valve, and belongs to the technical field of valves.

Background

It is known that, in chemical, petroleum, natural gas, power plant, coal mine, building, sewage treatment and light industry, gate valves are usually used to control the opening and closing of the transmission pipeline, the gate valve used at present includes valve body, valve seat, gate plate, valve cover, actuator, etc., the valve body is equipped with valve cavity and inlet and outlet fluid medium channels formed along the transverse direction of the valve body, the fluid medium channel runs through the valve cavity, the two valve seats are ring-shaped parts, and are respectively and correspondingly arranged at the connecting end of the inlet and outlet fluid medium channels and the valve cavity, and respectively form a sealing connection with the inlet and outlet fluid medium channels, when the gate plate is in the closed state, the fluid medium channel is disconnected, the valve cover is fixed on the upper end face of the valve body, the valve rod of the actuator passes through the valve cover to be linked with the gate plate, the actuator drives the gate plate to move up or down, the opening and closing of the gate valve are realized; if the fluid medium to be conveyed is a fluid prone to coking, a heat source device is usually added outside the valve body to prevent the fluid in the valve body from coking.

When the traditional wedge gate valve is opened, fluid can enter the valve cavity along a gap between the gate plate and the valve seat, impurity particles contained in the fluid can also enter the valve cavity, the impurity particles can disturb the movement of the gate plate, and the phenomenon that the valve is difficult to open or the valve is not closed tightly can be caused in serious cases; in addition, the disk seat of traditional wedge gate valve is mostly welded on the valve body through the mode of seal welding, and when disk seat or flashboard wearing and tearing, whole gate valve is directly scrapped, needs to change a whole set of new gate valve, and use cost is higher, and serious wasting of resources.

Disclosure of Invention

The invention aims to overcome the technical problems in the prior art, and provides a novel anti-coking gate valve, which can improve the sealing capacity of the valve by arranging a valve plate to be matched with a sealing cavity, reduce the abrasion of the valve and prolong the service life of the valve.

In order to solve the technical problems, the invention provides the following technical scheme:

a novel anti-coking gate valve comprises a valve body, wherein a connecting seat is arranged at the top of the valve body, an inner cavity of the connecting seat is provided with an operating screw rod, a valve cavity is arranged at the bottom of the connecting seat and is arranged in the valve body, a connecting piece is arranged in the valve cavity, the bottom of the connecting piece is connected with a valve plate, the bottom of the valve body is provided with a valve seat, two ends of the valve seat are provided with connecting pipes, the valve plate penetrates through the top of the connecting pipe, a through hole is arranged between the valve cavity and the connecting pipes, a sealing ring is arranged in the through hole and is in sealing connection with the through hole, a sealing cavity is arranged in the connecting pipes, the valve plate is arranged in the sealing cavity, the bottom of the sealing cavity is provided with a sealing groove, the connecting pipe comprises an inner pipe and an outer, a pressure pipe is arranged on one side of the valve body and communicated with the valve cavity.

Furthermore, a thread matched with the operation screw rod is arranged in the connecting seat, and a handle is installed at the top end of the operation screw rod.

Further, the valve plate is of a wedge-shaped structure, a sealing piece is arranged at the bottom of the valve plate, and a sealing pressing block matched with the communicating groove is arranged at the bottom of the sealing piece.

Furthermore, the radiating pipe is arranged in an S shape, the inner side of the radiating pipe is provided with heat conducting fins and is attached to the inner pipe, and the inner side of the outer pipe is provided with a heat insulating plate.

Further, the air inlet pipe is arranged on one side of the valve body, the drain pipe is arranged at the bottom of the connecting pipe, and the drain pipe is provided with a fixed valve.

Further, the inner side of the sealing ring is provided with a wedge-shaped surface, and the thickness of the top of the sealing ring is smaller than that of the bottom of the sealing ring.

The invention has the beneficial effects that:

1. the valve plate is matched with the sealing cavity, so that the sealing capacity of the valve can be improved, the abrasion of the valve can be reduced, and the service life of the valve can be prolonged;

2. the heat-conducting valve can be conducted by arranging the heat-radiating pipe and the heat-conducting fins, so that coking in the valve is prevented from influencing use;

3. through setting up the pressure pipe, can carry out the pressure boost to the valve pocket, prevent that the fluid in the connecting tube from getting into the valve pocket, influencing the valve and using.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and not limit the invention.

FIG. 1 is a cross-sectional view of a novel anti-coking gate valve of the present invention;

FIG. 2 is a side view of a novel anti-coking gate valve of the present invention;

FIG. 3 is a cross-sectional view of a seal groove of a novel anti-coking gate valve of the present invention;

fig. 4 is a schematic structural diagram of the novel anti-coking gate valve sealing ring.

Reference numbers in the figures: 1. a valve body; 2. a connecting seat; 3. operating the screw; 4. a valve cavity; 5. a connecting member; 6. a valve plate; 7. a valve seat; 8. a connecting pipe; 9. a through hole; 10. a seal ring; 11. sealing the cavity; 12. a sealing groove; 13. a communicating groove; 14. an inner tube; 15. an outer tube; 16. a radiating pipe; 17. an air inlet pipe; 18. a drain pipe; 19. a pressure pipe; 20. a seal member; 21. a heat conductive sheet.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.