CN214889025U

CN214889025U - Dome valve device easy to disassemble, assemble and maintain

Info

Publication number: CN214889025U
Application number: CN202121352826.6U
Authority: CN
Inventors: 崔振海
Original assignee: Chuanghui Tongda Tianjin Technology Development Co ltd
Current assignee: Chuanghui Tongda Tianjin Technology Development Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-26
Anticipated expiration: 2031-06-17

Abstract

The utility model relates to an easy dome valve device of dismouting maintenance. The valve comprises a main valve body, wherein the top of the main valve body is provided with a valve cover with a material port by adopting a plurality of connecting screws, and the bottom of the main valve body is provided with a connecting valve body by adopting a plurality of connecting bolts; a first shaft seat and a second shaft seat which are integrally formed are arranged outside the main valve body, a first rotating shaft is arranged in the first shaft hole, a second rotating shaft is arranged in the second shaft hole, and a valve core is arranged between the inner ends of the two rotating shafts; the valve core comprises a dome-shaped valve top positioned in the middle part and a first support arm and a second support arm which are positioned on two sides and are integrally formed, shaft holes are formed in the roots of the two support arms, and the inner ends of the rotating shafts are positioned in the shaft holes of the corresponding support arms and are connected by adopting pins; the outer end of the first rotating shaft is sleeved with an outer fixing sleeve, the outer fixing sleeve is connected with the first rotating shaft through a first pin, the outer end of the second rotating shaft is provided with a pin hole, and a second pin is arranged in the pin hole. The utility model has the advantages of reasonable design, maintain labour saving and time saving.

Description

Dome valve device easy to disassemble, assemble and maintain

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to an easy dome valve device of dismouting maintenance.

Background

Dome valves are a common valve device used in modern industry, especially in pneumatic conveying systems. The dome valve is installed in piping system's middle part, plays the on-off control function that traditional valve provided, and the dome valve is installed in positions such as feed inlet, discharge gate, and the dome valve plays on-off control function. A typical application scenario is in pneumatic conveying systems, for example in coal ash pneumatic conveying systems of thermal power plants, where there are a large number of examples of applications of dome valves.

In such a scenario, i.e. in the case of pneumatic transport of powder/granular materials, the dome valve is widely used because of its operational reliability, which is due to the few moving parts, and because of its dome-shaped valve element and good sealing properties, the problems of material and gas leakage can be effectively avoided.

However, the working environment of the dome valve is a relatively harsh environment, and specifically, when powder/particle materials with polished characteristics continuously pass through the dome valve at a high speed, continuous abrasion action is generated on the interior of the valve body, the valve core and the sealing assembly, and after a certain period of use, the abrasion amount reaches a certain degree, and at this time, the working characteristics, especially the sealing characteristics, of the dome valve are reduced, so that the problems of material leakage, gas leakage and the like are caused, and the working characteristics of the pneumatic conveying system are reduced. Maintenance of the dome valve is required and it is a common practice to replace components within the valve, such as the core assembly, the seal assembly, and restore operational characteristics.

In summary, the dome valve device needs to be periodically disassembled and maintained, so that the dome valve needs to be structurally supported for quick disassembly and assembly, and the conventional dome valve is complicated in disassembly and maintenance due to unreasonable structural design, so that the maintenance operation is time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dome valve device that easy dismouting was maintained that structural design is reasonable, maintenance labour saving and time saving is maintained for solving the technical problem that exists among the known art.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a dome valve device easy to disassemble, assemble and maintain comprises a main valve body, wherein a valve cover with a material port is installed at the top of the main valve body by adopting a plurality of connecting screws, and a connecting valve body is installed at the bottom of the main valve body by adopting a plurality of connecting bolts; a first shaft seat with a first shaft hole and a second shaft seat with a second shaft hole which are integrally formed are arranged outside the main valve body, a first rotating shaft is arranged in the first shaft hole, a second rotating shaft is arranged in the second shaft hole, and a valve core is arranged between the inner ends of the first rotating shaft and the second rotating shaft; the valve core comprises a dome-shaped valve top positioned in the middle part and a first support arm and a second support arm which are positioned on two sides and are integrally formed, shaft holes are formed in the roots of the two support arms, the inner end of the first rotating shaft is positioned in the shaft hole of the first support arm and connected through a first pin, and the inner end of the second rotating shaft is positioned in the shaft hole of the second support arm and connected through a second pin; the outer end of the first rotating shaft is sleeved with an outer fixing sleeve, the outer fixing sleeve is connected with the first rotating shaft through a first pin, the outer end of the second rotating shaft is provided with a pin hole, and a second pin is arranged in the pin hole.

The utility model has the advantages that:

the utility model provides a dome valve device that easy dismouting was maintained that structural design is reasonable compares with current dome valve device, the utility model discloses in through set up between the valve gap and the main valve body for bolted connection, main valve body and be connected between the valve body, make the main part of valve be convenient for carry out the dismouting. Through setting up between first pivot and the first support arm, all adopt pin joint between second pivot and the second support arm, make between first pivot, second pivot and the case be convenient for carry out the dismouting. Adopt pin joint through the outer end that sets up first pivot with outer fixed cover between, the outer fixed cover of being convenient for carries out the dismouting. The pin hole is formed in the outer end of the second rotating shaft, and the pin is arranged in the pin hole, so that the dome valve device and an external driver are convenient to disassemble and assemble. This dome valve device makes to be convenient for carry out the partition and assemble between the different parts through optimizing structural design, like this when the operation of certain time after need maintain the valve, can reduce the intensity of operation, labour saving and time saving.

Preferably: a first bushing is arranged between the first rotating shaft and the first shaft base, and a second bushing is arranged between the second rotating shaft and the second shaft base.

Preferably: the side wall of the first shaft seat is provided with an oil filling port, a first oil filling nozzle is installed on the oil filling port, the side wall of the second shaft seat is provided with an oil filling port, and a second oil filling nozzle is installed on the oil filling port.

Preferably: the bottom of the main valve body is provided with a first flange plate, the top of the connecting valve body is provided with a second flange plate, the bottom of the connecting valve body is provided with a third flange plate, the first flange plate and the second flange plate are fixedly connected through the connecting bolt, and a rubber sealing gasket is arranged between the first flange plate and the second flange plate.

Preferably: a combined gasket is arranged between the main valve body and the valve cover and comprises at least two metal gaskets and at least one rubber gasket, and the rubber gasket is clamped between the metal gaskets.

Preferably: a pneumatic sealing assembly is arranged among the main valve body, the valve cover and the valve core, the pneumatic sealing assembly comprises a lower supporting ring with a Z-shaped section, an expansion sealing ring with a C-shaped section and an upper supporting ring with an air passage, the expansion sealing ring is coated on the outer side of the upper supporting ring, the upper edge of the expansion sealing ring falls into a groove arranged on the inner wall of the valve cover, and the lower edge of the expansion sealing ring is clamped by the upper supporting ring and the lower supporting ring; an air inlet communicated with the inside is arranged on the side wall of the valve cover.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a schematic side view of the present invention;

fig. 3 is a schematic sectional structure diagram of the present invention.

In the figure:

1. a first pin; 2. an outer fixing sleeve; 3. a first shaft seat; 4. a first oil nozzle; 5. a first flange plate; 6. a valve cover; 6-1, a material port; 7. a main valve body; 8. combining the gaskets; 9. an air inlet; 10. a second oil injection nozzle; 11. a second rotating shaft; 12. a second pin; 13. a second flange plate; 14. a connecting bolt; 15. connecting the valve body; 16. a third flange plate; 17. a sealing gasket; 18. a second shaft base; 19. a first rotating shaft; 20. a valve core; 20-1, a first support arm; 20-2, a second support arm; 21. a first bushing; 22. a second bushing; 23. expanding the sealing ring; 24. an upper support ring; 25. a lower support ring.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are described in detail.

Referring to fig. 1, 2 and 3, the dome valve device easy to disassemble, assemble and maintain of the present invention includes a main valve body 7, a valve cover 6 having a material port 6-1 is installed on the top of the main valve body 7 by using a plurality of connecting screws, and a connecting valve body 15 is installed on the bottom of the main valve body 7 by using a plurality of connecting bolts 14. The main valve body 7 is used as the main body part of the valve, the connecting valve body 15 is used for being in butt joint connection with a pipeline of a pneumatic conveying system, and the material port 6-1 is used for discharging powder/particle materials.

In this embodiment, a plurality of connection threaded holes are formed in the top end surface of the main valve body 7, a plurality of countersunk screw holes are formed in corresponding positions on the valve cover 6, and each connection screw is respectively located in each group of connection threaded hole and each countersunk screw hole.

In this embodiment, the first flange 5 is disposed at the bottom of the main valve body 7, the second flange 13 is disposed at the top of the connecting valve body 15, the third flange 16 is disposed at the bottom of the connecting valve body, the first flange 5 and the second flange 13 are fixedly connected by the connecting bolt 14, and a rubber sealing gasket 17 is disposed between the first flange 5 and the second flange 13.

The outside of the main valve body 7 is provided with a first shaft seat 3 with a first shaft hole and a second shaft seat 18 with a second shaft hole which are integrally formed, the center lines of the first shaft hole and the second shaft hole are collinear, and the center lines are vertically intersected with the center line of the main valve body 7.

A first rotary shaft 19 is provided in the first shaft hole, a second rotary shaft 11 is provided in the second shaft hole, and a valve element 20 is mounted between inner ends of both the first rotary shaft 19 and the second rotary shaft 11. The valve core 20 comprises a dome-shaped valve top positioned in the middle, and a first support arm 20-1 and a second support arm 20-2 which are positioned on two sides and are integrally formed, shaft holes are formed in the root parts of the two support arms, the inner end of the first rotating shaft 19 is positioned in the shaft hole of the first support arm 20-1 and is connected through a first pin 1, and the inner end of the second rotating shaft 11 is positioned in the shaft hole of the second support arm 20-2 and is connected through a second pin 12.

The outer end of the first rotating shaft 19 is sleeved with an outer fixing sleeve 2, the outer fixing sleeve 2 is connected with the first rotating shaft 19 through a first pin 1, the outer end of the second rotating shaft 11 is provided with a pin hole, and a second pin 12 is arranged in the pin hole. Wherein a second pin 12 at the outer end of the second shaft 11 is used for connecting the dome valve device with an external actuator. The pin connection mode of aforementioned each position makes each part of this calotte valve device easily split and reassemble, has promoted the convenience that the dismouting was maintained, makes maintenance operation labour saving and time saving.

A first bushing 21 is provided between the first rotary shaft 19 and the first boss 3, and a second bushing 22 is provided between the second rotary shaft 11 and the second boss 18. Both the first bush 21 and the second bush 22 are made of wear-resistant alloy, and in order to ensure the sealing performance of the position of the driving shaft system, retaining rings made of rubber can be arranged at the inner end and the outer end of the first bush 21 and the inner end and the outer end of the second bush 22.

An oil filling opening is provided in the side wall of the first shaft base 3 and a first oil filling nozzle 4 is mounted thereon, and an oil filling opening is provided in the side wall of the second shaft base 18 and a second oil filling nozzle 10 is mounted thereon. Lubricating oil is injected into the driving shaft system through the two oil injection nozzles, so that the lubricating effect of the position of the driving shaft system is ensured, and the running resistance of the valve is reduced.

In order to ensure the sealing performance of the butt joint position between the main valve body 7 and the valve cover 6, in this embodiment, a combined gasket 8 is arranged between the main valve body 7 and the valve cover 6, and the combined gasket 8 includes at least two metal gaskets and at least one rubber gasket, and the rubber gasket is clamped between the metal gaskets. Specifically, the combination gasket 8 may include a first metal gasket, a first rubber gasket, a second metal gasket, a second rubber gasket, and a third metal gasket stacked in this order, where the first metal gasket is in contact with the valve cover 6, and the third metal gasket is in contact with the main valve body 7.

And connecting holes are arranged at corresponding positions on the combined gasket 8, and when the valve is assembled, each connecting screw penetrates through each group of connecting holes.

Pneumatic sealing assemblies are provided between the main valve body 7, the valve cover 6 and the valve element 20, which are used to provide a pneumatic sealing effect when the valve is closed.

As shown in the figure, the pneumatic sealing assembly comprises a lower support ring 25 with a Z-shaped section, an expansion sealing ring 23 with a C-shaped section and an upper support ring 24 with an air passage, wherein the expansion sealing ring 23 is coated on the outer side of the upper support ring 24, the upper edge of the expansion sealing ring 23 falls into a groove arranged on the inner wall of the valve cover 6, the lower edge is clamped by the upper support ring 24 and the lower support ring 25, and therefore only the middle part of the expansion sealing ring 23 generates expansion and contraction actions.

An air inlet 9 penetrating the valve cover 6 is provided in a side wall thereof, an air inlet joint is attached to the air inlet 9, and an external compressed air line is connected to the air inlet joint. Compressed air is injected into a pneumatic sealing assembly inside the valve through the air inlet 9 by a compressed air pipeline, so that the expansion sealing ring 23 generates an expansion effect, and the expanded sealing ring is pressed on the outer surface of the dome-shaped valve top of the valve core 20 to generate a reliable sealing effect.

The dismounting process:

(1) splitting

Detaching each connecting bolt 14 to release the connection between the main valve body 7 and the connecting valve body 15; the second pin 12 at the outer end of the second rotating shaft 11 is taken down, and the connection between the second rotating shaft 11 and the external driver is released; disassembling each connecting screw and releasing the connection between the main valve body 7 and the valve cover 6;

the combination of the upper support ring 24 and the expansion seal ring 23, the lower support ring 25 and the combination gasket 8 are taken down from the upper part in sequence; the first rotating shaft 19 is operated by the external fixing sleeve 2 to rotate for a certain angle, the dome-shaped valve top of the valve core 20 is transferred to the side part, then the first pin 1 at the inner end of the first rotating shaft 19 and the second pin 12 at the inner end of the second rotating shaft 11 are taken down, the first rotating shaft 19 and the second rotating shaft 11 are pulled outwards, and then the valve core 20 falls off;

and (3) removing the first pin 1 at the outer end of the first rotating shaft 19, and releasing the connection between the outer fixing sleeve 2 and the first rotating shaft 19.

(2) Assembly

Repairing or replacing corresponding parts after disassembly, wherein common replaced parts comprise a valve core 20, an expansion sealing ring 23 and a check ring in a driving shaft system, and a valve cover 6 and a lower supporting ring 25 are replaced when the abrasion is serious;

connecting the outer fixing sleeve 2 with the outer end of the first rotating shaft 19 by adopting a first pin 1, then placing the first rotating shaft 19 into the first shaft hole, and placing the second rotating shaft 11 into the second shaft hole; the valve core 20 is placed in from the lower part, the inner end of the first rotating shaft 19 is inserted into the shaft hole of the first support arm 20-1 and connected by adopting a first pin 1, and the inner end of the second rotating shaft 11 is inserted into the shaft hole of the second support arm 20-2 and connected by adopting a second pin 12; then, the first rotating shaft 19 is rotated through the external fixing sleeve 2 to drive the valve core 20 to deflect to a closed state, namely the state in fig. 3, a combined gasket 8 is placed at the top of the main valve body 7, then a lower support ring 25 is placed on the combined gasket 8, an upper support ring 24 and an expansion seal ring 23 are combined and then integrally placed on the lower support ring 25, then the valve cover 6 is placed, and connecting screws are screwed into each group of connecting threaded holes and countersunk head screw holes to realize the mounting and fixing between the main valve body 7 and the valve cover 6;

after a sealing washer 17 is arranged between the first flange plate 5 and the second flange plate 13, the first flange plate and the second flange plate are fixedly connected by adopting a plurality of connecting bolts 14; the output shaft of the external driver is in butt joint with the outer end of the second rotating shaft 11, specifically, a coupling sleeve can be arranged, the coupling sleeve is sleeved at the outer end of the second rotating shaft 11 and is connected by a second pin 12, and the output shaft of the driving element such as a fan-shaped cylinder is in butt joint with the outer end of the coupling sleeve.

Claims

1. A dome valve assembly for easy disassembly and maintenance, comprising: the valve comprises a main valve body (7), wherein a valve cover (6) with a material port (6-1) is installed at the top of the main valve body (7) by adopting a plurality of connecting screws, and a connecting valve body (15) is installed at the bottom of the main valve body (7) by adopting a plurality of connecting bolts (14); a first shaft seat (3) with a first shaft hole and a second shaft seat (18) with a second shaft hole which are integrally formed are arranged outside the main valve body (7), a first rotating shaft (19) is arranged in the first shaft hole, a second rotating shaft (11) is arranged in the second shaft hole, and a valve core (20) is arranged between the inner ends of the first rotating shaft (19) and the second rotating shaft (11); the valve core (20) comprises a dome-shaped valve top positioned in the middle, and a first support arm (20-1) and a second support arm (20-2) which are positioned on two sides and are integrally formed, shaft holes are formed in the root parts of the two support arms, the inner end of the first rotating shaft (19) is positioned in the shaft hole of the first support arm (20-1) and connected through a first pin (1), and the inner end of the second rotating shaft (11) is positioned in the shaft hole of the second support arm (20-2) and connected through a second pin (12); the outer end of the first rotating shaft (19) is sleeved with an outer fixing sleeve (2), the outer fixing sleeve (2) is connected with the first rotating shaft (19) through a first pin (1), the outer end of the second rotating shaft (11) is provided with a pin hole, and a second pin (12) is arranged in the pin hole.

2. A dome valve assembly for easy disassembly and maintenance as set forth in claim 1 wherein: a first bush (21) is arranged between the first rotating shaft (19) and the first shaft seat (3), and a second bush (22) is arranged between the second rotating shaft (11) and the second shaft seat (18).

3. A dome valve assembly for easy disassembly and maintenance as set forth in claim 2 wherein: an oil filling port is arranged on the side wall of the first shaft seat (3), a first oil filling nozzle (4) is installed on the oil filling port, an oil filling port is arranged on the side wall of the second shaft seat (18), and a second oil filling nozzle (10) is installed on the oil filling port.

4. A dome valve assembly for easy disassembly and maintenance as set forth in claim 3 wherein: the bottom of the main valve body (7) is provided with a first flange (5), the top of the connecting valve body (15) is provided with a second flange (13), the bottom of the connecting valve body is provided with a third flange (16), the first flange (5) and the second flange (13) are fixedly connected through a connecting bolt (14), and a sealing gasket (17) made of rubber is arranged between the first flange and the second flange.

5. A dome valve assembly for easy disassembly and maintenance as set forth in claim 4 wherein: a combined gasket (8) is arranged between the main valve body (7) and the valve cover (6), the combined gasket (8) comprises at least two metal gaskets and at least one rubber gasket, and the rubber gasket is clamped between the metal gaskets.

6. A dome valve assembly for easy disassembly and maintenance as set forth in claim 5 wherein: a pneumatic sealing assembly is arranged among the main valve body (7), the valve cover (6) and the valve core (20), the pneumatic sealing assembly comprises a lower supporting ring (25) with a Z-shaped section, an expansion sealing ring (23) with a C-shaped section and an upper supporting ring (24) with an air passage, the expansion sealing ring (23) is coated on the outer side of the upper supporting ring (24), the upper edge of the expansion sealing ring (23) falls into a groove arranged on the inner wall of the valve cover (6), and the lower edge of the expansion sealing ring is clamped by the upper supporting ring (24) and the lower supporting ring (25); an air inlet (9) communicated with the inside is arranged on the side wall of the valve cover (6).