CN210178972U - Split type valve core dome valve for removing ash slag - Google Patents

Abstract

The utility model discloses a split type valve core dome valve for ash removal, which belongs to the dome valve field and comprises a valve body and an upper flange fixedly arranged at the top of the valve body through a first bolt, both ends of the bottom of the valve body are respectively provided with a through hole, a rotatable driving shaft is fixed inside the through hole, the two driving shafts are connected and fixed through a valve core lower body, one side of the valve core lower body is integrally formed with an annular arch part, the inner side of the top end of the arch part is integrally formed with an annular connecting part, the top of the connecting part is fixedly arranged with a hemispherical valve core upper body through a second bolt, the technical proposal combines the valve core upper body and the valve core lower body into a whole through a second bolt to form an integral valve core component, so that the valve core component is more convenient to replace after being damaged, and the cost of the valve core component during maintenance can be effectively saved, compared with the traditional valve core assembly, the valve core assembly has lower maintenance technical requirements on workers during replacement.

Description

Split type valve core dome valve for removing ash slag

Technical Field

The utility model relates to a ball top valve field, more specifically say, relate to a ash removal is with split type case calotte valve.

Background

The dome valve is an indispensable stop valve in the fly ash comprehensive utilization of thermal power plant, because the special operating mode condition (high speed, high dust concentration, material wearability is strong, the temperature is high, system reliability requires highly) of thermal power ash removal sediment system, as the valve of thermal power ash removal sediment system key parts, owing to receive the material to erode, corrode, the sealed position is very easily worn and torn, need the indefinite time to the inside core structure of valve inspect and change, in order to guarantee the normal use of valve, avoid leading to the switching performance reduction of valve or even inefficacy because the valve core is impaired, thereby lead to whole ash removal sediment system to stop the normal work that influences whole production system.

Through market research and experimental discovery, because the reason of ash removal system and valve structure, the valve damages the essential element and is hemisphere case and sealing washer, and the case among the original valve structure is the integral type structure basically, damages the back at the case, need dismantle whole valve, change whole case subassembly with whole valve. Therefore, not only is the maintenance cost and the maintenance workload of a user increased, but also the requirements on the professional level in the maintenance process are higher, so that a dome valve which is convenient to maintain, time-saving, labor-saving, low in maintenance cost and free of too high maintenance professional technical level is needed.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a remove ash and use split type case calotte valve possesses easy maintenance, labour saving and time saving, maintenance cost are little, do not need too high maintenance technology professional horizontally advantage, have solved at present because the maintenance of the case subassembly in the calotte valve wastes time and energy with when changing, maintenance cost is high, need higher professional technical horizontally problem during the maintenance.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A split type valve core dome valve for removing ash slag comprises a valve body and an upper flange fixedly arranged at the top of the valve body through a first bolt, wherein an opening is formed in the middle of the upper flange corresponding to a cavity in the valve body, through holes are formed in both ends of the bottom of the valve body, rotatable driving shafts are fixed in the through holes, the two driving shafts are fixedly connected through a valve core lower body, both ends of the bottom of the valve core lower body are fixedly sleeved at one ends of the two driving shafts, the valve core lower body and the driving shafts are fixedly positioned through elastic cylindrical pins, an annular arched part is integrally formed on one side of the valve core lower body, an annular connecting part is integrally formed on the inner side of the top end of the arched part, a hemispherical valve core upper body is fixedly arranged at the top of the connecting part through a second bolt, the valve core upper body is positioned on the inner side of the opening, and the upper part of the valve core upper, the structure design combines the upper body and the lower body of the valve core into a whole through a second bolt to form an integral valve core assembly, so that the valve core assembly is more convenient to replace after being damaged, compared with the original dome valve, the improved valve core assembly is a split combination, accessories in the valve core assembly can be selectively replaced during maintenance and replacement, the integral replacement of the traditional valve core assembly is not needed when the valve core assembly is replaced, the cost of the valve core assembly during maintenance can be effectively saved, and when a valve head in the valve core assembly needs to be replaced after being abraded, the valve core upper body can be replaced only after the upper flange is disassembled, so that the whole spherical valve head is more convenient to replace, and the maintenance technical requirement on workers is lower when the traditional valve core assembly is replaced.

Preferably, the rubber sealing element is internally provided with a cavity which is communicated with an inflation port in a pneumatic execution driver part of the dome valve, the rubber sealing element is integrally made of high polymer rubber, the inner side of the rubber sealing element is tightly attached to the outer surface of the upper body of the valve core, the valve core and the rubber sealing ring can move in a non-contact mode, so that no friction is generated between the valve core and the rubber sealing ring, the abrasion is reduced, the pneumatic execution element is a double-acting linear cylinder, the valve core of the dome valve is driven to rotate by a rotating arm, when the dome valve is in a closed state, the rubber sealing ring is inflated and tightly pressed on the spherical dome valve core, a very reliable sealing ring belt is formed, the flow of materials in the pipeline is prevented, and the rubber sealing element made of the high polymer rubber can still have a good rebound effect in a high-temperature environment, the rubber sealing member can have good sealing performance.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) the proposal combines the upper valve core body and the lower valve core body into a whole through the second bolt to form an integral valve core component, the valve core component is more convenient to replace after being damaged, compared with the original dome valve, the improved valve core component is a split combination, the accessories in the valve core component can be selectively replaced during maintenance and replacement, the traditional valve core component does not need to be integrally replaced during replacement, the cost of the valve core component during maintenance can be effectively saved, when the spherical valve head in the valve core assembly needs to be replaced after being worn, the upper body of the valve core can be replaced only after the upper flange is disassembled, the replacement of the whole spherical valve head is more convenient, compared with the traditional valve core assembly, the valve core assembly has lower requirements on the maintenance technology of workers, the drive shaft at one end of the valve body is connected to the power output end of the pneumatic actuator component of the dome valve.

(2) This scheme adopts the rubber seal spare that polymer rubber constitutes can make rubber seal component still possess good resilience effect under high temperature environment, can make rubber seal spare possess good seal.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

The reference numbers in the figures illustrate:

1. a valve body; 2. a first bolt; 3. an upper flange; 4. opening a hole; 5. a gasket; 6. a rubber seal; 7. a through hole; 8. a drive shaft; 9. a valve core lower body; 10. an elastic cylindrical pin; 11. an arch portion; 12. a connecting portion; 13. a second bolt; 14. and a valve core upper body.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Please refer to fig. 1:

a split valve core dome valve for removing ash slag comprises a valve body 1 and an upper flange 3 fixedly arranged at the top of the valve body 1 through a first bolt 2, the middle part of the upper flange 3 corresponding to the position of a cavity inside the valve body 1 is provided with an opening 4, both ends of the bottom of the valve body 1 are provided with a through hole 7, a rotatable driving shaft 8 is fixed inside the through hole 7, the two driving shafts 8 are connected and fixed through a valve core lower body 9, both ends of the bottom of the valve core lower body 9 are fixedly sleeved at one end of the two driving shafts 8, the valve core lower body 9 and the driving shafts 8 are positioned and fixed through an elastic cylindrical pin 10, one side of the valve core lower body 9 is integrally formed with an annular arch part 11, the inner side of the top end of the arch part 11 is integrally formed with an annular connecting part 12, the top of the connecting part 12 is fixedly provided with a hemispherical valve core upper body 14 through a second bolt 13, the upper half part of the valve core upper body 14 is tightly attached to the bottom of the inner side of the opening 4, a gasket 5 is arranged between the upper flange 3 and the inner side of the top of the valve body 1, the outer edge of the gasket 5 is clamped between the upper flange 3 and the valve body 1, a rubber sealing piece 6 is fixed between the upper flange 3 and the gasket 5, a driving shaft 8 at one end of the valve body 1 is connected to the power output end of a pneumatic execution driver part of the dome valve, and the top end of an arch part 11 in the valve core lower body 9 is matched with the opening size of the bottom of the valve core upper body 14; the valve core upper part 14 and the valve core lower part 9 are combined into a whole through the second bolt 13 to form a whole valve core assembly, the valve core assembly is more convenient to replace after being damaged, compared with an original dome valve, the improved valve core assembly is a split type combination, the accessories in the valve core assembly can be selectively replaced during maintenance and replacement, the whole replacement of the traditional valve core assembly is not needed when the valve core assembly is replaced, the cost of the valve core assembly during maintenance can be effectively saved, and when the valve core assembly needs to be replaced after the spherical valve head is worn, the valve core upper part 14 can be replaced only by disassembling the upper flange 3, the replacement of the whole spherical valve head is more convenient, and the maintenance technical requirement on workers is lower when the traditional valve core assembly is replaced.

Further, the inside of rubber seal 6 is provided with a cavity, the cavity is communicated with an inflation port in a pneumatic actuator part of the dome valve, the whole rubber seal 6 is made of high polymer rubber, the inner side of the rubber seal 6 is tightly attached to the outer surface of the valve core upper body 14, the rubber seal made of the high polymer rubber can enable the rubber seal element to have a good rebound effect under a high-temperature environment, and the rubber seal can have good tightness.

The working principle is as follows: when the upper valve core body 14 (namely, the spherical dome surface) in the valve core assembly is worn by a high-speed solid material flow and needs to be replaced, the original upper flange 3 is opened only through the first bolt 2, and then the second bolt 13 is loosened, so that the upper valve core body 14 can be separated out and a new upper valve core body 14 is replaced. The purposes of high efficiency, labor saving and low cost are achieved, and the problems that the maintenance and the replacement of a valve core assembly in the dome valve are time-consuming and labor-consuming, the maintenance cost is high, and a higher professional technical level is needed during the maintenance are solved.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims (5)

1. The utility model provides a ash removal sediment is with split type case dome valve, includes valve body (1) and valve body (1) top and passes through first bolt (2) fixed mounting's last flange (3), its characterized in that: the middle part of the upper flange (3) is provided with an opening (4) corresponding to the position of the inner cavity of the valve body (1), two ends of the bottom of the valve body (1) are provided with a through hole (7), a rotatable driving shaft (8) is fixed in the through hole (7), the two driving shafts (8) are fixedly connected through a valve core lower body (9), two ends of the bottom of the valve core lower body (9) are fixedly sleeved at one end of the two driving shafts (8), the valve core lower body (9) and the driving shafts (8) are fixedly positioned through an elastic cylindrical pin (10), one side of the valve core lower body (9) is integrally formed with an annular arch part (11), the inner side of the top end of the arch part (11) is integrally formed with an annular connecting part (12), and the top of the connecting part (12) is fixedly provided with a hemispherical valve core upper body (14) through a second bolt (13), the valve core upper body (14) is located on the inner side of the opening (4), the upper half part of the valve core upper body (14) is tightly attached to the bottom of the inner side of the opening (4), a gasket (5) is arranged between the upper flange (3) and the inner side of the top of the valve body (1), the outer edge of the gasket (5) is clamped between the upper flange (3) and the valve body (1), and a rubber sealing element (6) is fixed between the upper flange (3) and the gasket (5).

2. The split-type valve core dome valve for ash removal according to claim 1, wherein: and a driving shaft (8) at one end of the valve body (1) is connected to the power output end of a pneumatic execution driver part of the dome valve.

3. The split-type valve core dome valve for ash removal according to claim 1, wherein: the inner side of the rubber sealing piece (6) is tightly attached to the outer surface of the valve core upper body (14).

4. The split-type valve core dome valve for ash removal according to claim 1, wherein: the top end of an arch part (11) in the lower valve core body (9) is matched with the size of an opening at the bottom of the upper valve core body (14).

5. The split-type valve core dome valve for ash removal according to claim 1, wherein: the rubber sealing piece (6) is internally provided with a cavity which is communicated with an inflation port in a pneumatic execution driver part of the dome valve, and the whole rubber sealing piece (6) is made of high polymer rubber.

Images