Sealing device for ash discharging round door

Abstract

The utility model discloses an ash discharging round door sealing device which comprises a valve body with an ash discharging opening, a valve plate, a rotating arm connected with the valve plate, and an opening and closing oil cylinder for driving the rotating arm to rotate around a rotating shaft so as to enable the valve plate to open or close the ash discharging opening. The key point is that a positioning assembly for positioning the valve plate at a position for closing the ash discharge port is arranged on the outer side of the rotating shaft, and the positioning assembly comprises a lock pin and a linear driving assembly for driving the lock pin to enter or leave a lock hole in the rotating shaft. The utility model has the beneficial effects that the valve plate is locked at the position for closing the ash discharge port by positioning through the position of the rotating shaft, and the ash discharge port cannot be opened even if the opening and closing oil cylinder loses oil, so that accidents are avoided; the valve plate can rotate relative to the rotating arm, sealing between the valve plate and the valve seat is achieved through the adjusting bolt, and the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of gasification furnaces, and in particular relates to a sealing device for an ash lowering round door. Background Art

[0002] In the prior art, the sealing structure of the lower ash round door is that the lower ash round door is hinged at the lower ash opening of the ash bin of the gasifier, and the lower ash round door is driven to deflect by the opening and closing cylinder to open or close the lower ash opening of the ash bin.

[0003] The above-mentioned technology has the following technical problems: low reliability, once the opening and closing cylinder loses oil, it will cause a safety accident. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a sealing device for a lower ash round door. A locking pin which can move up and down is arranged at the hinge of the lower ash round door. When the lower ash round door is closed, the locking pin enters the locking hole at the hinge to prevent the opening and closing cylinder from losing oil and causing the lower ash round door to open and cause an accident.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a lower ash round door sealing device, including a valve body with a lower ash opening, a valve plate, a rotating arm connected to the valve plate, and an opening and closing cylinder that drives the rotating arm to rotate around a rotating shaft to enable the valve plate to open or close the lower ash opening. The key is: a positioning component for positioning the valve plate in a position to close the lower ash opening is provided on the outer side of the rotating shaft, and the positioning component includes a locking pin and a linear drive component that drives the locking pin to enter or leave the locking hole on the rotating shaft.

[0006] Furthermore, the linear drive assembly includes a locking cylinder fixed on the valve body, and a piston rod of the locking cylinder passes through a through hole on the valve body and is connected to the locking pin.

[0007] Furthermore, a hinge seat is provided below the valve body, and the rotating shaft is limited on the hinge seat.

[0008] Furthermore, one end of the rotating arm is connected to the valve plate, and the other end is sleeved on the rotating shaft. A through hole communicating with the locking hole is provided at the end of the rotating arm.

[0009] Furthermore, the valve plate is connected to the rotating arm by means of connecting bolts and matching connecting nuts that pass through the valve plate and are connected to the rotating arm.

[0010] Furthermore, a spherical pad is provided between the valve plate and the rotating arm.

[0011] Furthermore, an annular groove is provided on the bottom surface of the valve plate, and an adjusting bolt is provided at the end of the rotating arm, which is threadedly connected to the rotating arm and has a limiting end located in the annular groove.

[0012] Furthermore, a driving arm is arranged on the rotating shaft, and a free end of the driving arm is hinged to the piston rod of the opening and closing oil cylinder.

[0013] Furthermore, a protective cover is provided below the valve body.

[0014] Furthermore, a valve seat is provided on the valve body to form a sealing structure with the valve plate, and a hard alloy surfacing sealing layer is provided on the outer side of the annular boss on the valve seat to match the sealing surface of the valve plate.

[0015] The beneficial effects of the utility model are as follows: the valve plate is locked in a position to close the ash lower opening by positioning the rotating shaft, and the ash lower opening will not be opened even if the opening and closing cylinder loses oil, thereby avoiding accidents; the valve plate can rotate relative to the rotating arm and the sealing between the valve plate and the valve seat can be achieved by means of the adjusting bolt, thereby ensuring the sealing effect.

[0016] The utility model is described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model of the sealing device of the lower ash round door;

[0018] Figure 2 yes Figure 1 Sectional view along AA direction;

[0019] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle.

[0020] In the accompanying drawings, 1, valve body, 1-1, lower ash port, 2, valve plate, 2-1, annular groove, 3, swivel arm, 4, swivel shaft, 4-1, lock hole, 5, opening and closing cylinder, 6, lock pin, 7, locking cylinder, 8, hinged seat, 9, driving arm, 10, connecting bolt, 11, connecting nut, 12, spherical pad, 13, adjusting bolt, 14, valve seat, 14-1, annular boss, 15, carbide surfacing sealing layer, 16, protective cover. DETAILED DESCRIPTION

[0021] See attached Figure 1 and 2 The utility model provides a sealing device for a lower ash round door, comprising a valve body 1 having a lower ash opening 1-1, a valve plate 2, a rotating arm 3 connected to the valve plate 2, and an opening and closing oil cylinder 5 driving the rotating arm 3 to rotate around a rotating shaft 4 so that the valve plate 2 opens or closes the lower ash opening 1-1. A positioning component for positioning the valve plate 2 at a position to close the lower ash opening 1-1 is provided on the outer side of the rotating shaft 4. By designing the positioning component, the valve plate 2 can always be in a closed position after the valve plate 2 closes the lower ash opening 1-1, and the lower ash opening 1-1 will not be opened even if the opening and closing oil cylinder 5 loses oil, thereby avoiding accidents.

[0022] See attached Figure 1 The positioning assembly includes a locking pin 6 and a linear drive assembly for driving the locking pin 6 to enter or leave the locking hole 4-1 on the rotating shaft 4. The linear drive assembly includes a locking cylinder 7 fixed on the valve body 1, and a piston rod of the locking cylinder 7 passes through a through hole on the valve body 1 and is connected to the locking pin 6.

[0023] A hinge seat 8 is provided below the valve body 1, and the rotating shaft 4 is limited on the hinge seat 8. One end of the rotating arm 3 is connected to the valve plate 2, and the other end is sleeved on the rotating shaft 4. A through hole communicating with the lock hole 4-1 is provided at the end of the rotating arm 3. A driving arm 9 is provided on the rotating shaft 4, and the free end of the driving arm 9 is hinged to the piston rod of the opening and closing cylinder 5.

[0024] The valve plate 2 is connected to the swing arm 3 by means of a connecting bolt 10 and a matching connecting nut 11 that pass through the valve plate 2 and are connected to the swing arm 3. A spherical pad 12 is provided between the valve plate 2 and the swing arm 3, so that the valve plate 2 can rotate 360° relative to the swing arm 3 within a certain angle range, so that the valve plate 2 can better seal the lower ash port 1-1.

[0025] See attached Figure 1 and 3 A valve seat 14 is provided on the valve body 1 to form a sealing structure with the valve plate 2, and a hard alloy cladding sealing layer 15 is provided on the outer side of the annular boss 14-1 on the valve seat 14 to match the sealing surface of the valve plate 2. The hard alloy cladding sealing layer 15 is formed by welding hard alloy to the outer side of the annular boss 14-1 by cladding.

[0026] When the lower ash mouth 1-1 is not sealed, the valve plate 2 will deflect toward the end of the swing arm 3 under the action of gravity, so that when sealing, the part of the valve plate 2 located at the inner end of the swing arm 3 first contacts the hard alloy cladding sealing layer 15, so that the valve plate 2 and the swing arm 3 rotate relative to each other so that the valve plate 2 and the hard alloy cladding sealing layer 15 are completely in contact and sealed. This will cause the hard alloy cladding sealing layer 15 that first contacts the valve plate 2 to wear more seriously than other parts after long-term use, causing uneven wear on the sealing surface of the valve plate 2, affecting the sealing effect and service life. An annular groove 2-1 is provided on the bottom surface of the valve plate 2, and an adjusting bolt 13 that is threadedly connected to the swing arm 3 and whose limit end is located in the annular groove 2-1 is provided at the end of the swing arm 3, thereby limiting the angle at which the valve plate 2 can rotate toward the end of the swing arm 3. Before the sealing device leaves the factory, the threaded connection distance between the adjusting bolt 13 and the swing arm 3 is adjusted to limit the activity space between the valve plate 2 and the end of the swing arm 3, so that the hard alloy cladding sealing layer 15 is worn as uniformly as possible, thereby ensuring the service life and sealing effect.

[0027] See attached Figure 1 A protective cover 16 is provided below the valve body 1 to prevent the materials falling through the ash outlet 1-1 from scattering.

[0028] The working process of the device of the utility model is as follows: when the lower ash port 1-1 needs to be closed, the opening and closing oil cylinder 5 drives the valve plate 2 to rotate toward the lower ash port 1-1 through the driving arm 9, the rotating shaft 4 and the rotating arm 3, and then cooperates with the hard alloy cladding sealing layer 15 on the valve seat 14 to achieve sealing. After sealing, the locking oil cylinder 7 drives the locking pin 6 to move downward into the locking hole 4-1 on the rotating shaft 4 to position the rotating shaft 4, so that the valve plate 2 is always in the sealing position.

[0029] When the ash lowering port 1-1 needs to be opened, the locking cylinder 7 drives the locking pin 6 to move upward and leave the locking hole 4-1 on the rotating shaft 4. Then the opening and closing cylinder 5 drives the valve plate 2 to rotate to the initial position through the driving arm 9, the rotating shaft 4 and the rotating arm 3.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A sealing device for an ash lowering round door, comprising a valve body (1) having an ash lowering opening (1-1), a valve plate (2), a rotating arm (3) connected to the valve plate (2), and an opening and closing oil cylinder (5) for driving the rotating arm (3) to rotate about a rotating shaft (4) so ​​that the valve plate (2) opens or closes the ash lowering opening (1-1), characterized in that: A positioning assembly for positioning the valve plate (2) at a position for closing the lower ash opening (1-1) is provided on the outer side of the rotating shaft (4), the positioning assembly comprising a locking pin (6) and a linear drive assembly for driving the locking pin (6) to enter or leave a locking hole (4-1) on the rotating shaft (4).

2. The sealing device for the lower ash round door according to claim 1, characterized in that: The linear drive assembly comprises a locking cylinder (7) fixed on the valve body (1), and a piston rod of the locking cylinder (7) passes through a through hole on the valve body (1) and is connected to the locking pin (6).

3. The sealing device for the lower ash round door according to claim 1, characterized in that: A hinge seat (8) is provided below the valve body (1), and the rotating shaft (4) is limited on the hinge seat (8).

4. The sealing device for the lower ash round door according to claim 1, characterized in that: One end of the rotating arm (3) is connected to the valve plate (2), and the other end is sleeved on the rotating shaft (4). A through hole communicating with the locking hole (4-1) is provided at the end of the rotating arm (3).

5. The sealing device for the lower ash round door according to claim 4 is characterized in that: The valve plate (2) is connected to the rotating arm (3) by means of a connecting bolt (10) and a matching connecting nut (11) which passes through the valve plate (2) and is connected to the rotating arm (3).

6. The sealing device for the lower ash round door according to claim 5, characterized in that: A spherical pad (12) is provided between the valve plate (2) and the rotating arm (3).

7. The sealing device for the lower ash round door according to claim 6, characterized in that: An annular groove (2-1) is provided on the bottom surface of the valve plate (2), and an adjusting bolt (13) is provided at the end of the rotating arm (3), which is threadedly connected to the rotating arm (3) and has a limiting end located in the annular groove (2-1).

8. The sealing device for the lower ash round door according to claim 1, characterized in that: A driving arm (9) is provided on the rotating shaft (4), and a free end of the driving arm (9) is hingedly connected to the piston rod of the opening and closing oil cylinder (5).

9. The sealing device for the lower ash round door according to claim 1, characterized in that: A protective cover (16) is provided below the valve body (1).

10. The sealing device for the lower ash round door according to any one of claims 1 to 9, characterized in that: A valve seat (14) is provided on the valve body (1) and forms a sealing structure with the valve plate (2), and a hard alloy cladding sealing layer (15) is provided on the outer side of the annular boss (14-1) on the valve seat (14) and matches the sealing surface of the valve plate (2).

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