Sintering circular cooler chimney blow-off valve capable of being opened and closed flexibly
By designing a flexible sintering ring cooler chimney vent valve, the problem of valve jamming in high-temperature and high-dust environments was solved, achieving both sealing and flexible operation in high-temperature flue gas environments, ensuring that the efficiency of the waste heat boiler is not affected.
Patent Information
- Application Number
- CN202520103733.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The existing vent valve of the sintering ring cooler chimney is prone to jamming due to uneven thermal expansion in high-temperature and high-dust environments, which affects the normal operation and efficiency of the waste heat boiler.
A flexible release valve is designed, comprising a valve seat, valve plate, support frame, guide rod, sliding sleeve, connecting plate, lifting lug, pulley block, and traction wire rope. The valve plate is flexibly opened and closed by the pulley block and traction wire rope. The sliding sleeve cooperates with the guide rod to prevent the valve plate from rotating. The lower part of the valve plate and the valve seat form a sealing pair, and the seal is achieved by its own gravity.
It maintains good sealing and switching flexibility in high-temperature and high-dust environments, prevents cold air from entering high-temperature flue gas, ensures that the efficiency of the waste heat boiler is not affected, requires little valve opening force, and has a simple structure and is easy to use.
Smart Images
Figure CN223768136U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of sintering ring cooling tower chimney diffusion valves, belong to sintering ring cooling tower equipment technical field. BACKGROUND
[0002] The full name of the ring cooler is ring type cooler, which cools the hot sinter discharged from the sintering machine. In the sintering production process, the hot sinter after roasting is evenly distributed on the trolley of the ring cooler through the discharge system. The cooling air exchanges heat with the sinter to cool the sinter, and the cooling air is heated into hot flue gas. In order to make full use of the waste heat of the sinter, the sintering industry usually configures a ring cooler waste heat boiler. The hot flue gas in the high temperature section (usually the first and second sections of the ring cooler) is collected and introduced into the waste heat boiler to exchange heat with water, generating steam for production or driving the steam turbine set.
[0003] In order to effectively collect the hot flue gas in the high temperature section of the ring cooler, a gas collecting hood is installed above the trolley in the high temperature section of the ring cooler. A chimney is provided at the top of the gas collecting hood. A diffusion valve is provided at the outlet of the chimney. A flue gas pipeline is provided at the middle of the chimney and the top of the gas collecting hood to lead the flue gas to the waste heat boiler. During the initial stage of the operation of the ring cooler or during the fault maintenance of the waste heat boiler, the inlet flue gas valve of the waste heat boiler is closed, and the flue gas of the ring cooler needs to be discharged into the air. The diffusion valve of the chimney is in an open state. Under normal operating conditions of the waste heat boiler, the chimney and the flue gas pipeline are in a negative pressure state. In order to prevent cold air from entering the waste heat boiler and reduce the efficiency of the waste heat boiler, the diffusion valve of the chimney needs to be closed and reliably cut off to prevent external cold air from entering.
[0004] During the normal operation of the ring cooler, the temperature of the hot sinter on the trolley in the high temperature section is 700-800℃. The temperature of the hot flue gas after heat exchange can reach 450-600℃. The flue gas contains a certain amount of dust. The diffusion valve at the top of the chimney works in a high temperature and high dust environment. The thermal expansion of the valve body structure is relatively large, with an expansion amount exceeding 0.6%. The conventional butterfly valve structure valve is prone to uneven thermal expansion and local deformation during operation, causing the valve plate to jam and unable to normally open and close, which greatly affects the recovery efficiency of the waste heat boiler. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a sintering ring cooler chimney diffusion valve with flexible opening and closing. This diffusion valve can effectively isolate external cold air from high temperature flue gas, prevent cold air from entering high temperature flue gas and affect the efficiency of the waste heat boiler. In a high temperature and high dust flue gas environment, it has good sealing performance and flexibility in opening and closing, ensuring the reliable opening and closing of the diffusion valve.
[0006] The technical solution of the utility model is:
[0007] The switch flexible sintering ring cooling machine chimney emission valve, it includes valve seat, valve plate, support frame, bottom plate, guide rod, sliding sleeve, connecting plate, lifting lug, pulley block, traction steel wire rope, the valve seat is horizontally placed circular ring, the valve seat is welded on the export upper end of the chimney, the valve plate is the half spherical shell, the upper portion of the half spherical shell of the valve plate is the half spherical circular surface, the lower portion of the half spherical shell of the valve plate is the inverted conical circular ring, the circumferential lower portion of the outer wall of the inverted conical circular ring is embedded in the inner hole opening of the circular ring of the valve seat, the support frame is π-shaped frame, the support frame is vertically placed, the horizontal crossbeam of the support frame is located above the valve plate, the lower end of two vertical columns of the support frame is welded and connected with the opposite two ends of the outer circumference of the circular ring of the valve seat through the horizontal bottom plate, two guide rods are vertically welded between the two bottom plates and the horizontal crossbeam of the support frame, two sliding sleeves are respectively sleeved on the two guide rods, the sliding sleeve and the guide rod are slidingly matched, the two sliding sleeves are fixedly connected with the opposite two sides of the valve plate through the horizontal connecting plate, the lifting lug is welded in the central upper end plate surface of the valve plate, the pulleys of the pulley block are respectively installed in the center between the horizontal crossbeam of the support frame and the upper end outer side of one vertical column of the support frame, the lower end of the traction steel wire rope is connected with the lifting lug, and the upper end of the traction steel wire rope is connected with the wire rope winch outside the support frame through the pulleys of the pulley block.
[0008] The lower end of the bottom plate is welded with a support plate, and the side surface of the support plate is welded and connected with the outer wall of the valve seat and the outer wall of the chimney.
[0009] The upper end opening of the inner hole wall of the circular ring of the valve seat is inverted conical, the outer wall of the inverted conical circular ring of the lower portion of the valve plate and the inverted conical opening of the inner hole wall of the circular ring of the valve seat form a sealing pair, and the two contact surfaces of the sealing pair are sealingly and slidably matched.
[0010] The two lifting lugs are fixedly arranged on the center of the upper surface of the valve plate in parallel, the two lifting lugs are provided with opposite shaft holes, the pulley block is composed of one movable pulley and two fixed pulleys, the pulley shafts of the movable pulley are connected with the shaft holes of the two lifting lugs at two ends respectively, the two fixed pulleys are fixedly arranged on the center between the horizontal crossbeam of the support frame and the upper end outer side of one vertical column of the support frame, one end of the traction steel wire rope is fixedly arranged on the lower surface of the upper end crossbeam of the support frame, and the other end of the traction steel wire rope is connected with the two fixed pulleys upwards after being wound around the movable pulley downwards.
[0011] The switch flexible sintering ring cooling machine chimney emission valve, it includes valve seat, valve plate, support frame, bottom plate, guide rod, sliding sleeve, connecting plate, lifting lug, pulley block, traction steel wire rope, the valve seat is horizontally placed circular ring, the valve seat is welded on the export upper end of the chimney, the valve plate is the half spherical shell, the upper portion of the half spherical shell of the valve plate is the half spherical circular surface, the lower portion of the half spherical shell of the valve plate is the inverted conical circular ring, the circumferential lower portion of the outer wall of the inverted conical circular ring is embedded in the inner hole opening of the circular ring of the valve seat, the support frame is π-shaped frame, the support frame is vertically placed, the horizontal crossbeam of the support frame is located above the valve plate, the lower end of two vertical columns of the support frame is welded and connected with the opposite two ends of the outer circumference of the circular ring of the valve seat through the horizontal bottom plate, two guide rods are vertically welded between the two bottom plates and the horizontal crossbeam of the support frame, two sliding sleeves are respectively sleeved on the two guide rods, the sliding sleeve and the guide rod are slidingly matched, the two sliding sleeves are fixedly connected with the opposite two sides of the valve plate through the horizontal connecting plate, the lifting lug is welded in the central upper end plate surface of the valve plate, the pulleys of the pulley block are respectively installed in the center between the horizontal crossbeam of the support frame and the upper end outer side of one vertical column of the support frame, the lower end of the traction steel wire rope is connected with the lifting lug, and the upper end of the traction steel wire rope is connected with the wire rope winch outside the support frame through the pulleys of the pulley block.
[0012] The valve plate is connected with the traction steel wire rope through the pulley set, and pulling the traction steel wire rope can make the valve plate realize closing and opening of the chimney; the sliding sleeve can slide up and down along the guide rod, and the valve plate is constrained to move stably and prevent rotation; the outer wall of the inverted conical ring at the lower part of the valve plate and the inner wall of the ring of the valve seat form a sealing pair, and the self-gravity of the valve plate realizes sealing, and the sealing effect and switching flexibility are still good when expanding under heating, and the opening force of the valve is small.
[0013] The utility model discloses simple structure, convenient to use is applicable to the effective cut-off of high temperature high dust flue gas medium environment, can prevent cold air from stringing into high temperature flue gas and affect the efficiency of waste heat boiler under the normal operation condition of ring cooling machine and waste heat boiler, and still has good sealing effect and switching flexibility when expanding under heating. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structural schematic diagram of the utility model;
[0015] Figure 2 It is the plan view of support frame;
[0016] Figure 3 It is the plan view of valve plate.
[0017] Marked as follows in the drawing: chimney 1, valve seat 2, valve plate 3, support frame 4, bottom plate 5, support plate 6, guide rod 7, sliding sleeve 8, connecting plate 9, lifting lug 10, pulley set 11, traction steel wire rope 12, movable pulley 13, fixed pulley 14. DETAILED DESCRIPTION
[0018] The utility model discloses valve seat 2, valve plate 3, support frame 4, bottom plate 5, support plate 6, guide rod 7, sliding sleeve 8, connecting plate 9, lifting lug 10, pulley set 11, traction steel wire rope 12 are formed.
[0019] It is shown in the drawing that valve seat 2 is horizontally placed ring, and valve seat 2 is welded on the export upper end of chimney 1, and the upper end opening of the ring inner hole wall of valve seat 2 is inverted conical.
[0020] It is shown in the drawing that valve plate 3 is hemispherical shell, and the upper part of the hemispherical shell of valve plate 3 is hemispherical arc surface, and the lower part of the hemispherical shell of valve plate 3 is inverted conical ring, and the outer wall of the inverted conical ring at the lower part of valve plate 3 and the inverted conical opening of the ring inner hole wall of valve seat 2 form sealing pair, and the two contact surfaces of sealing pair are sealing sliding fit.
[0021] As shown in the diagram, a support frame 4 is installed on the outside of the valve seat 2. The support frame 4 is a π-shaped frame, placed vertically. The horizontal beam of the support frame 4 consists of two parallel channel steels, located above the valve plate 3. The two vertical columns of the support frame 4 are also channel steels, with their lower ends welded to opposite ends of the outer circumference of the valve seat 2 via a horizontal base plate 5. A support plate 6 is welded to the lower end of the base plate 5. The side of the support plate 6 is welded to the outer wall of the valve seat 2 and the outer wall of the chimney 1. The support plate 6 ensures a secure connection between the base plate 5, the valve seat 2, and the chimney 1.
[0022] As shown in the diagram, guide rods 7 and sliding sleeves 8 are installed inside the support frame 4. Two guide rods 7 are vertically welded between the two base plates 5 and the horizontal beams of the support frame 4. Two sliding sleeves 8 are respectively fitted onto the two guide rods 7, with a sliding fit between the sliding sleeves 8 and the guide rods 7. The two sliding sleeves 8 are fixedly connected to the opposite sides of the valve plate 2 via horizontal connecting plates 9. When the valve plate 3 moves up and down, the sliding sleeves 8 move synchronously up and down through the connecting plates 9. The structure of the sliding sleeves 8 and guide rods 7 is used to constrain the valve plate 3, ensuring that the valve plate 3 moves vertically and preventing rotation.
[0023] As shown in the figure, there are two lifting lugs 10, which are fixed parallel to each other at the center of the upper surface of the valve plate 3. The two lifting lugs 10 have opposing shaft holes. The pulley block 11 consists of a movable pulley 13 and two fixed pulleys 14. The two ends of the pulley shaft of the movable pulley 13 are connected to the shaft holes of the two lifting lugs 10 respectively. The two fixed pulleys 14 are fixed at the middle position between the two horizontal beams of the support frame 4 and the upper outer side of the vertical column of the support frame 4 respectively. One end of the traction wire rope 12 is fixed to the lower surface of the upper beam of the support frame 4. The other end of the traction wire rope 12 wraps downward around the movable pulley 13 and then connects upward to the two fixed pulleys 14. The traction wire rope 12 passes through the two fixed pulleys 14 of the pulley block 11 and is connected to the wire rope winch or hoist on the outside of the support frame 4. The traction wire rope 12 pulls the valve plate 3 up or down through the lifting lug 10, causing the valve plate 3 to open and close and separate from and contact the valve seat 2, thereby achieving the function of the vent valve to switch flue gas.
[0024] This utility model is applicable to the effective cut-off of high-temperature and high-dust flue gas media environments. Under the normal operating conditions of the annular cooler and waste heat boiler, it prevents cold air from entering the high-temperature flue gas and affecting the efficiency of the waste heat boiler. The valve relies on the weight of the valve plate to achieve sealing. The contact surface of the sealing pair is a conical surface, which still has a good sealing effect and opening and closing flexibility when it expands due to heat. The valve opening force is small.
[0025] An embodiment of this utility model is as follows:
[0026] The outer diameter of valve seat 2 is 3800mm, the inner diameter is 3500mm, and the thickness is 40mm;
[0027] The upper diameter of valve plate 3 is 3600mm, the height is 500mm, and the lower opening diameter is 3400mm.
[0028] The upper crossbeam of support frame 4 is 4300mm long and is made of 14# channel steel; the column height is 2000mm and is made of 20# channel steel.
[0029] The base plate 5 is 240mm long, 200mm wide, and 20mm thick;
[0030] The support plate 6 is 340mm long, 340mm wide, and 12mm thick;
[0031] The guide rod 7 has a diameter of 50mm and a length of 2100mm;
[0032] The sliding sleeve 8 has a diameter of 76mm, an inner diameter of 56mm, and a length of 300mm.
[0033] The connecting plate 9 is 200mm long, 200mm wide, and 12mm thick;
[0034] The length of the lifting lug 10 is 240mm, the width is 240mm, and the thickness is 20mm;
[0035] The pulleys of pulley block 11 have a diameter of 112mm and a thickness of 40mm;
[0036] The diameter of the traction wire rope 12 is 11mm and the length is 30000mm.
Claims
1. A switchable sintering annular cooler stack vent valve characterized by: It includes valve seat (2), valve plate (3), support frame (4), bottom plate (5), guide rod (7), sliding sleeve (8), connecting plate (9), lifting lug (10), pulley block (11), traction steel wire rope (12), the valve seat (2) is horizontally placed annular, the valve seat (2) is welded on the upper end of the chimney (1) outlet, the valve plate (3) is half spherical shell, the upper half spherical shell of the valve plate (3) is half spherical arc surface, the lower half spherical shell of the valve plate (3) is inverted conical annular, the inverted conical annular outer wall is embedded in the inner hole opening of the annular of the valve seat (2), the support frame (4) is π-shaped frame, the support frame (4) is vertically placed, the horizontal crossbeam of the support frame (4) is two parallel arranged channel steel, located above the valve plate (3), the two vertical columns of the support frame (4) lower end are respectively connected with the two ends of the annular of the valve seat (2) through the horizontal bottom plate (5), two guide rods (7) are vertically welded between the two bottom plates (5) and the horizontal crossbeam of the support frame (4), two sliding sleeves (8) are respectively sleeved on the two guide rods (7), the sliding sleeve (8) and the guide rod (7) are sliding fit, the two sliding sleeves (8) are respectively fixedly connected with the opposite sides of the valve plate (3) through the horizontal connecting plate (9), the lifting lug (10) is welded on the central upper end plate surface of the valve plate (3), the pulley block (11) pulley is respectively installed between the central of the horizontal crossbeam of the support frame (4) and the upper end outside of a vertical column of the support frame (4), the lower end of the traction steel wire rope (12) is connected with the movable pulley (13) at the lifting lug (10), the upper end of the traction steel wire rope (12) is connected with the steel wire rope winch outside of the support frame (4) through the pulley of the pulley block (11).
2. The switchable sinter ring cooler stack bleeder valve of claim 1, wherein: The lower end of the bottom plate (5) is welded with a support plate (6), and the side surface of the support plate (6) is welded and connected with the outer wall of the valve seat (2) and the outer wall of the chimney (1).
3. The switchable sinter ring cooler stack bleeder valve of claim 1, wherein: The upper end opening of the annular inner hole wall of the valve seat (2) is inverted conical, the inverted conical annular outer wall of the lower part of the valve plate (3) and the inverted conical opening of the annular inner hole wall of the valve seat (2) constitute a sealing pair, and the two contact surfaces of the sealing pair are sealing sliding fit.
4. The switchable sinter ring cooler stack bleeder valve of claim 1, wherein: The lifting lug (10) is two, the two lifting lugs (10) are fixed on the upper surface center of the valve plate (3) in parallel, the two lifting lugs (10) have opposite shaft holes, the pulley block (11) is composed of a movable pulley (13) and two fixed pulleys (14), the pulley shafts of the movable pulley (13) are respectively connected with the shaft holes of the two lifting lugs (10), the two fixed pulleys (14) are respectively fixed between the central of the horizontal crossbeam of the support frame (4) and the upper end outside of a vertical column of the support frame (4), one end of the traction steel wire rope (12) is fixed on the lower surface of the upper end crossbeam of the support frame (4), the other end of the traction steel wire rope (12) is connected with the two fixed pulleys (14) after being downward around the movable pulley (13).