CN210069028U

CN210069028U - Four-way cock valve

Info

Publication number: CN210069028U
Application number: CN201822233340.5U
Authority: CN
Inventors: 胡向阳
Original assignee: Shineng (tianjin) Thermal Technology Co Ltd
Current assignee: Shineng (tianjin) Thermal Technology Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-02-14
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses a four-way plug valve, which comprises a valve body, a valve core assembly and a pneumatic actuator, wherein the valve body is provided with four inlets and outlets, the pneumatic actuator is connected with an upper cover through a support, a through hole is formed in the middle of the upper cover, the wall of the through hole protrudes upwards to form a bearing seat, a mandrel passes through the through hole and is connected with a driving shaft of the pneumatic actuator, and an upper bearing is arranged between the mandrel and the bearing seat; the bottom end of the mandrel is provided with a ball, the lower end of the mandrel extends into a limiting groove formed in the middle of the lower cover, and a lower bearing is arranged between the lower end of the mandrel and the limiting groove. The utility model discloses specially to high temperature air combustion system development design, have that the function is reliable, simple to operate, maintain advantages such as simple and convenient, the noise is low, its drive arrangement adopts the dependable performance product, operates steadily, safety, is applicable to the temperature and is less than below 220 ℃, the switching-over of air, coal gas and waste gas below the pressure 10 KPa.

Description

Four-way cock valve

Technical Field

The utility model belongs to a valve, concretely relates to four-way plug valve.

Background

The four-way plug valve is a valve body with a four-way valve body, and is composed of a valve body, a valve core, a spring seat, a handle and the like, wherein the valve body is sealed with the conical surface of the valve core, the waist part of the valve core is provided with a groove, and a support column is arranged in the groove to strengthen the strength of the groove. The valve body is a four-way valve body and is connected with the solar water heater, tap water, the shower and the hot water faucet through pipelines, so that the four-way valve can freely control the opening, closing, water regulation and flow division.

The high-temperature air combustion technology is that burner nozzles of burners are arranged in pairs in a heating furnace, a heat storage type flue gas waste heat recovery device is adopted, air and flue gas are alternately switched to flow through a heat storage body (a honeycomb ceramic heat storage body or a ceramic ball), and sensible heat of the high-temperature flue gas can be recovered to the maximum extent; the gas (fuel oil) and air introduced into the furnace are injected at high speed from a specially designed burner to entrain surrounding smoke to form oxygen-deficient combustion, so that the generation of NOx is greatly reduced, and the heat accumulating type combustion technology greatly saves fuel, CO and CO₂The discharge amount is greatly reduced, and the device has the advantages of prolonged combustion flame, uniform temperature field distribution and the like. The four-way plug valve is a special reversing device for realizing a high-temperature air combustion technology by alternately switching air and smoke, and can be widely applied to industrial furnaces or heating equipment in the industries of steel, machinery, nonferrous metal, petrochemical industry, building materials, boilers, waste incineration and the like.

SUMMERY OF THE UTILITY MODEL

The utility model is provided for overcoming the defects existing in the prior art, and the purpose is to provide a four-way plug valve.

The technical scheme of the utility model is that:

a four-way plug valve comprises a valve body, a valve core assembly and a pneumatic actuator, wherein the upper cover and the lower cover are respectively arranged at the upper part and the lower part of the valve body, four inlets and outlets are arranged on the valve body, the pneumatic actuator is connected with the upper cover through a support, a through hole is formed in the middle of the upper cover, the wall of the through hole protrudes upwards to form a bearing seat, a mandrel penetrates through the through hole and is connected with a driving shaft of the pneumatic actuator, and an upper bearing is arranged between the mandrel and the bearing seat; the bottom end of the mandrel is provided with a ball, the lower end of the mandrel extends into a limiting groove formed in the middle of the lower cover, and a lower bearing is arranged between the lower end of the mandrel and the limiting groove; the valve core assembly comprises a mandrel, a partition plate and four valve clack door frames which are uniformly distributed, a channel is formed on the valve clack door frames, the partition plate penetrates through the mandrel, and the mandrel is located at the center line of the partition plate.

The bottom of the pneumatic actuating mechanism is fixed with the support through bolts.

The support and the upper cover are fixed through bolts.

The upper cover is connected with the valve body through a bolt, and the lower cover is welded and fixed with the valve body.

And a sealing gasket is arranged between the upper cover and the valve body.

The bearing seat is arranged in the support.

The top of the bearing seat is fixed with the gland through a bolt; and a sealing ring is arranged in a gap between the mandrel and the bearing seat below the gland.

The ball is in contact connection with the bottom of the limiting groove.

The four valve clack door frames are uniformly distributed on two sides of the partition plate.

The utility model has the advantages that:

the utility model provides a four-way plug valve is special to high temperature air combustion system development design, has that the function is reliable, simple to operate, maintain advantages such as simple and convenient, noise low, and its drive arrangement adopts the dependable performance product, operates steadily, safety, is applicable to the temperature and is less than below 220 ℃, the switching-over of air, coal gas and waste gas below the pressure 10 KPa.

Drawings

FIG. 1 is a schematic structural view of a four-way plug valve of the present invention;

FIG. 2 is a cross-sectional view of the four-way plug valve of the present invention;

fig. 3 is a sectional view taken along line a-a in fig. 2.

Wherein:

1 valve body 2 valve core

3 inlet and outlet of pneumatic actuator 4

5 support 6 upper cover

7 lower cover and 8 sealing washer

9 bearing seat 10 mandrel

11 upper bearing 12 gland

13 sealing ring and 14 balls

15 lower bearing 16 partition plate

17 flap door frame 18 channel.

Detailed Description

The four-way plug valve of the utility model is explained in detail with the attached drawings and the embodiment of the specification as follows:

as shown in fig. 1 to 3, a four-way plug valve comprises a valve body 1, a valve core assembly 2 and a pneumatic actuator 3, wherein an upper cover 6 and a lower cover 7 are respectively arranged at the upper part and the lower part of the valve body 1, four inlets and outlets 4 are arranged on the valve body 1, the pneumatic actuator 3 is connected with the upper cover 6 through a support 5, a through hole is formed in the middle of the upper cover 6, the wall of the through hole protrudes upwards to form a bearing seat 9, a mandrel 10 penetrates through the through hole and is connected with a driving shaft of the pneumatic actuator 3, and an upper bearing 11 is arranged between the mandrel 10 and; the bottom end of the mandrel 10 is provided with a ball 14, the lower end of the mandrel 10 extends into a limiting groove formed in the middle of the lower cover 7, and a lower bearing 15 is arranged between the lower end of the mandrel 10 and the limiting groove;

the valve core assembly 2 comprises a core shaft 10, a partition plate 16 and four valve flap door frames 17 which are uniformly distributed, wherein a channel 18 is formed on the valve flap door frames 17, the partition plate 16 penetrates through the core shaft 10, and the core shaft 10 is located at the center line of the partition plate 16.

The bottom of the pneumatic actuator 3 is fixed with the support 5 through bolts.

The support 5 and the upper cover 6 are fixed through bolts.

The upper cover 6 is connected with the valve body 1 through bolts, and the lower cover 7 is welded and fixed with the valve body 1.

And a sealing gasket 8 is arranged between the upper cover 6 and the valve body 1.

The bearing block 9 is placed inside the support 5.

The top of the bearing seat 9 is fixed with a gland 12 through a bolt; a sealing ring 13 is arranged in a gap between the mandrel 10 and the bearing seat 9 below the gland 12.

The ball 14 is in contact connection with the bottom of the limiting groove.

Four valve clack door frames 17 equipartition are in 16 both sides of division board.

The valve body is provided with four inlets and outlets, the valve core is provided with two flow passages, the valve core rotates for 90 degrees under the driving of the pneumatic actuating mechanism, and the four inlets and outlets on the valve body are respectively communicated with each other in pairs in an alternating manner, so that the reversing purpose is achieved.

The valve body of the valve adopts a welded structure, and the valve core adopts stainless steel, so that the valve has the characteristics of temperature resistance and corrosion resistance. The bottom of the valve is provided with an adjusting screw which is matched with the action of a spring arranged on the upper part of the valve core, so that the gap between the valve core and the valve body can be adjusted, and the phenomenon of valve blocking caused by expansion with heat and contraction with cold due to temperature rise can be overcome. The design can keep the clearance between the valve core and the valve body as small as possible, thereby reducing the leakage amount.

The pneumatic actuator is provided with a travel switch and a direction indicating sign, and can display the conditions of two positions of the valve for use in automatic control.

Claims

1. The utility model provides a four-way plug valve, sets up valve body (1), case subassembly (2) and pneumatic actuator (3) of upper cover (6) and lower cover (7) respectively from top to bottom, be provided with four exit (4) on valve body (1), its characterized in that: the pneumatic actuating mechanism (3) is connected with the upper cover (6) through the support (5), a through hole is formed in the middle of the upper cover (6), a bearing seat (9) is formed by upward protruding of the hole wall of the through hole, the mandrel (10) penetrates through the through hole and is connected with a driving shaft of the pneumatic actuating mechanism (3), and an upper bearing (11) is arranged between the mandrel (10) and the bearing seat (9); the bottom end of the mandrel (10) is provided with a ball (14), the lower end of the mandrel (10) extends into a limiting groove formed in the middle of the lower cover (7), and a lower bearing (15) is arranged between the lower end of the mandrel (10) and the limiting groove;

the valve core assembly (2) comprises a mandrel (10), a partition plate (16) and four valve flap door frames (17) which are uniformly distributed, a channel (18) is formed in each valve flap door frame (17), the partition plate (16) penetrates through the mandrel (10), and the mandrel (10) is located at the center line of the partition plate (16).

2. The four-way plug valve of claim 1, wherein: the bottom of the pneumatic actuating mechanism (3) is fixed with the support (5) through bolts.

3. The four-way plug valve of claim 1, wherein: the support (5) and the upper cover (6) are fixed through bolts.

4. The four-way plug valve of claim 1, wherein: the upper cover (6) is connected with the valve body (1) through a bolt, and the lower cover (7) is welded and fixed with the valve body (1).

5. The four-way plug valve of claim 1, wherein: and a sealing gasket (8) is arranged between the upper cover (6) and the valve body (1).

6. The four-way plug valve of claim 1, wherein: the bearing seat (9) is arranged inside the support (5).

7. The four-way plug valve of claim 1, wherein: the top of the bearing seat (9) is fixed with a gland (12) through a bolt; and a sealing ring (13) is arranged in a gap between the mandrel (10) and the bearing seat (9) below the gland (12).

8. The four-way plug valve of claim 1, wherein: the ball (14) is in contact connection with the bottom of the limiting groove.

9. The four-way plug valve of claim 1, wherein: the four valve clack door frames (17) are uniformly distributed on two sides of the partition plate (16).