Sealing device for dust collection dry pipe

Abstract

The utility model relates to the technical field of dust collection main pipe sealing, in particular to a sealing device for a dust collection main pipe. Comprising a dust collection main pipe outlet end, a sealing assembly and an opening and closing part, the top end of the sealing assembly is connected with the opening and closing part, and the bottom end is in spigot fit with a port of the outlet end of the dust collection main pipe. The opening and closing part is hinged to the outer wall of the dust collection main pipe on one side of the outlet end of the dust collection main pipe and is in butt joint with a furnace top vehicle to drive the sealing assembly to open or seal a port of the outlet end of the dust collection main pipe. According to the device, a traditional sealing face is changed into linear sealing from face sealing, and the device is simple in structure, convenient to maintain, long in service life and good in sealing performance.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collecting dry pipe sealing, in particular to a sealing device for a dust collecting dry pipe. Background Art

[0002] The dust removal for coal loading in coke ovens is generally a bag-type dust removal ground station. The steel dust collecting main pipe is connected to the top of the coke oven. A square or round hole is opened on the upper part of the carbonization chamber corresponding to the dust collecting main pipe, and a sealing device is installed at the square or round hole.

[0003] When pushing coke and loading coal in the carbonization chamber, the furnace number for pushing coke and loading coal is connected with the dust collecting main pipe through the furnace top vehicle, and the induced draft fan of the ground station generates suction to collect and purify the smoke and dust generated in the process before discharge in compliance with the standards. In order to achieve the collection effect, the sealing device at the non-coal loading hole is required to be tightly closed.

[0004] The existing sealing device adopts a plane "surface" seal, that is, a cover plate is arranged at a square hole or a circular hole, and the contact surface between the cover plate and the square hole or the circular hole is a sealing surface, and a fiber rope, a rubber pad or other materials are used as a buffer seal on the sealing surface.

[0005] This sealing method works well when the equipment is just put into use or before it is subjected to high-temperature baking. During the process of loading coal in the coke oven, the amount and temperature of raw gas generated are getting higher and higher. In the later stage of loading coal, smoke ignition often occurs. After the smoke is burned, a large amount of high-temperature smoke is sent to the ground dust removal station through the dust collecting main pipe. The dust collecting main pipe is repeatedly heated and cooled, which causes the dust collecting main pipe and the sealing device to be twisted and deformed to varying degrees after a period of use. The sealing device is not sealed tightly, resulting in insufficient suction of the dust collecting main pipe, which cannot effectively collect the coal loading dust, causing the coal loading dust to escape in an unorganized manner, polluting the links, and even causing environmental accidents. Therefore, it is urgent to solve this problem.

[0006] The above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are the closest prior art. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a sealing device for a dust collecting dry pipe, which changes the traditional sealing surface from "surface" sealing to "line" sealing, and has a simple structure, is easy to maintain, has a long service life and good sealing performance.

[0008] To achieve the above-mentioned purpose, the technical solution of the utility model is implemented as follows: a sealing device for a dust collecting main pipe, comprising: a dust collecting main pipe outlet end, a sealing assembly and an opening and closing part; the top end of the sealing assembly is connected to the opening and closing part, and the bottom end forms a stop fit with the port at the dust collecting main pipe outlet end; the opening and closing part is hinged to the outer wall of the dust collecting main pipe on one side of the dust collecting main pipe outlet end, and is docked with the furnace top vehicle, driving the sealing assembly to open or seal the port at the dust collecting main pipe outlet end.

[0009] Preferably, the sealing assembly includes a sealing cover and a connecting piece; the port at the outlet end of the dust collecting main pipe is set to a concave surface; the lower end surface of the sealing cover is set to a convex surface, and the convex surface is fitted with the concave surface of the port at the outlet end of the dust collecting main pipe; the connecting piece is connected to the upper end surface of the sealing cover, and the top of the connecting piece is connected to the opening and closing part.

[0010] Preferably, the sealing cover is set as a circular cover plate, and the lower convex surface of the circular cover plate is set as a spherical surface; the port at the outlet end of the dust collecting main pipe is circular, and an inward bevel surface is provided at the port, and the curvature of the bevel surface is the same as the curvature of the spherical surface of the circular cover plate.

[0011] Preferably, the port at the outlet end of the dust collecting main pipe is square, and an inward notch is provided at the port; the sealing cover is configured as a square cover plate, and a protrusion is provided on the edge of the lower convex surface of the square cover plate, and the protrusion and the notch form a snap connection.

[0012] Preferably, the opening and closing part includes a horizontal rod, an oblique push rod, a vertical rod and a base; one end of the horizontal rod is connected to the connecting piece, and the other end is connected to the oblique push rod, and the connection between the horizontal rod and the oblique push rod forms an obtuse angle; the top of the vertical rod and the connection between the horizontal rod and the oblique push rod are hinged, and the bottom is vertically connected to the base; the base is connected to the coke oven top on one side of the dust collecting main pipe outlet end.

[0013] Preferably, it also includes a horizontal push rod; there are two horizontal rods and two oblique push rods, which are symmetrically distributed along the center line of the sealing cover, and the horizontal push rod connects the ends of two adjacent oblique push rods, and the horizontal push rod is connected to the furnace top vehicle.

[0014] Preferably, it also includes a connecting short rod, a first pressure rod and a second pressure rod; the top of the connecting short rod is vertically connected to the horizontal rod, and the bottom is hinged to the connecting piece; both ends of the first pressure rod and the second pressure rod are respectively vertically connected to the adjacent horizontal rods, and are symmetrically distributed along the sealing cover, and the first pressure rod is provided with a first pressing bolt, and the second pressure rod is provided with a second pressing bolt, and the bottom ends of the first pressing bolt and the second pressing bolt are abutted against the upper end surface of the sealing cover.

[0015] Preferably, an annular ring is mounted on the outlet end of the dust collecting main pipe.

[0016] The beneficial effects of the utility model are embodied in:

[0017] (1) The device provided by the utility model changes the traditional sealing surface of the dust collecting main pipe outlet end from "surface" sealing to "line" sealing by means of stopper matching, and uses the sealing component's own gravity to ensure the tightness and stability of the "line" seal, thereby eliminating the problem of rubber seal aging and sealing failure at high temperature. The sealing performance is good, and the structure of the entire device is simple, which is convenient for daily maintenance. In addition, since the sealing components are made of metal in actual use, the service life of the device is longer.

[0018] (2) The utility model sets a hinge between the short rod and the connecting piece, and sets a first pressing bolt and a second pressing bolt. It is not only convenient for the sealing cover to be deflected to a certain extent after opening in daily use, but also convenient for the connection between the furnace top vehicle and the outlet end of the dust collecting main pipe. After the bottom of the first pressing bolt and the second pressing bolt are in contact with the upper end surface of the sealing cover, the entire sealing cover and the opening and closing part can be pressed by their own gravity, and the sealing effect between the outlet end of the dust collecting main pipe can be better, making the device more flexible to use and the sealing effect more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a top view of the utility model;

[0021] Figure 3 It is a partial cross-sectional view of the outlet end of the dust collecting main pipe of the utility model.

[0022] Description of reference numerals:

[0023] 10. Dust collecting main pipe outlet; 11. Annular ring; 12. Beveled surface; 20. Sealing cover;

[0024] 21. spherical surface; 22. connecting member; 30. opening and closing portion; 31. horizontal rod; 311. first pressure rod;

[0025] 312, second pressure rod; 32, oblique push rod; 33, vertical rod; 34, connecting short rod;

[0026] 35. Horizontal push rod; 41. First pressing bolt; 42. Second pressing bolt; 51. Base. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] Example

[0029] See also Figure 1-3 As shown:

[0030] The utility model provides a sealing device for a dust collecting dry pipe, comprising: a dust collecting dry pipe outlet end 10, a sealing assembly and an opening and closing portion 30. The top end of the sealing assembly is connected to the opening and closing portion 30, and the bottom end forms a stopper with the port of the dust collecting dry pipe outlet end 10. The opening and closing portion 30 is hinged to the outer wall of the dust collecting dry pipe on one side of the dust collecting dry pipe outlet end 10, and docks with the furnace top vehicle, driving the sealing assembly to open or seal the port of the dust collecting dry pipe outlet end 10.

[0031] The dust collecting main pipe outlet end 10 is changed from a traditional "face" seal to a "line" seal by means of the stopper fitting method, and the sealing component's own gravity is used to ensure the compactness and stability of the "line" seal, thereby preventing the problem of rubber seal aging and sealing failure at high temperatures. The sealing performance is good, and the entire device has a simple structure, which is convenient for daily maintenance. In addition, since the sealing components are made of metal in actual use, the service life of the device is longer.

[0032] The sealing assembly is mainly composed of a sealing cover 20 and a connecting piece 22 .

[0033] In actual use, the port of the dust collecting main pipe outlet 10 is set as a concave surface; the lower end surface of the sealing cover 20 is set as a convex surface, and the convex surface fits with the concave surface of the port of the dust collecting main pipe outlet 10, so as to seal it by a fitting connection. The connecting piece 22 is connected to the upper end surface of the sealing cover 20, and the top of the connecting piece 22 is connected to the opening and closing part 30.

[0034] In actual application, when the port of the dust collecting main pipe outlet 10 is set to be circular, the sealing cover 20 is set to be a circular cover plate, and the lower convex surface of the circular cover plate is set to be a spherical surface 21; and an inward chamfered surface 12 is provided at the port, and the curvature of the chamfered surface 12 is the same as the curvature of the spherical surface 21 of the circular cover plate. By utilizing the fitting contact between the spherical surface 21 and the chamfered surface 12, the sealing area is increased to the maximum extent, thereby improving the sealing effect of the entire device.

[0035] When the port of the dust collecting main duct outlet 10 is square, an inward notch is provided at the port, forming an inner step. At this time, the sealing cover 20 is set as a square cover plate, and the edge of the lower convex surface of the square cover plate is provided with a protrusion, and the protrusion and the notch form a snap connection. In this way, the sealing cover 20 is matched with the port of the dust collecting main duct outlet 10. Since the sealing part is changed from a step shape to a top-to-bottom matching whole, the sealing cover 20 and the port of the dust collecting main duct outlet 10 have two contact surfaces after closing, achieving two "line" sealing effects, thereby improving the sealing effect of the device.

[0036] The opening and closing part 30 is mainly composed of a horizontal rod 31, an inclined push rod 32, a vertical rod 33 and a base 51. One end of the horizontal rod 31 is connected to the connecting piece 22, and the other end is connected to the inclined push rod 32, and the connection between the horizontal rod 31 and the inclined push rod 32 forms an obtuse angle. The top of the vertical rod 33 and the connection between the horizontal rod 31 and the inclined push rod 32 are hinged, and the bottom is vertically connected to the base 51; the base 51 is connected to the coke oven top on one side of the dust collecting main pipe outlet end 10.

[0037] In actual use, only external force is needed to push the inclined push rod 32, and the sealing cover 20 can be lifted by utilizing the lever principle, thereby releasing the seal between the sealing cover 20 and the dust collecting main pipe outlet end 10, which is simple and convenient.

[0038] The utility model also includes a horizontal push rod 35; two horizontal rods 31 and two oblique push rods 32 are provided, and are symmetrically distributed along the center line of the sealing cover 20; the horizontal push rod 35 connects the ends of two adjacent oblique push rods 32, and the horizontal push rod 35 is butted with the furnace top vehicle. Through such an arrangement, the force bearing area at the oblique push rod 32 is increased, so that the furnace top vehicle or the operator can open the sealing cover 20 conveniently.

[0039] It also includes a connecting short rod 34, a first pressing rod 311 and a second pressing rod 312. The top of the connecting short rod 34 is vertically connected to the horizontal rod 31, and the bottom is hinged to the connecting member 22; both ends of the first pressing rod 311 and the second pressing rod 312 are vertically connected to the adjacent horizontal rod 31, and are symmetrically distributed along the sealing cover 20, and the first pressing rod 311 is provided with a first pressing bolt 41, and the second pressing rod 312 is provided with a second pressing bolt 42, and the bottom ends of the first pressing bolt 41 and the second pressing bolt 42 are in contact with the upper end surface of the sealing cover 20.

[0040] In order to facilitate opening the sealing cover 20, the connecting short rod 34 and the connecting piece 22 are arranged to be hinged, but to prevent the airflow in the dust collecting main pipe outlet end 10 from pushing the sealing cover 20 open, when sealing, it is only necessary to rotate the first pressing bolt 41 and the second pressing bolt 42 so that their bottoms are in contact with the upper end surface of the sealing cover 20, so that under the gravity pressure of the entire sealing cover 20 and the opening and closing part 30 themselves, the device can be used more flexibly and the sealing effect is more stable.

[0041] An annular ring 11 is mounted on the dust collecting main pipe outlet end 10. In actual use, the sealing cover 20 is opened, and the furnace top vehicle stops when the dust collecting main pipe outlet end 10 is docked with the annular ring 11 position, and the dust collecting main pipe will not be further squeezed.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing device for a dust collecting main pipe, characterized in that: include: A dust collecting main pipe outlet end (10), a sealing assembly and an opening and closing portion (30); the top end of the sealing assembly is connected to the opening and closing portion (30), and the bottom end forms a stop fit with the port of the dust collecting main pipe outlet end (10); the opening and closing portion (30) is hinged to the outer wall of the dust collecting main pipe on one side of the dust collecting main pipe outlet end (10), and is docked with the furnace roof vehicle, driving the sealing assembly to open or seal the port of the dust collecting main pipe outlet end (10).

2. A sealing device for a dust collecting main pipe according to claim 1, characterized in that: The sealing assembly comprises a sealing cover (20) and a connecting piece (22); the port of the dust collecting main pipe outlet end (10) is set as a concave surface; the lower end surface of the sealing cover (20) is set as a convex surface, and the convex surface is in contact with the concave surface of the port of the dust collecting main pipe outlet end (10); the connecting piece (22) is connected to the upper end surface of the sealing cover (20), and the top of the connecting piece (22) is connected to the opening and closing portion (30).

3. A sealing device for a dust collecting main pipe according to claim 2, characterized in that: The sealing cover (20) is configured as a circular cover plate, and the lower convex surface of the circular cover plate is configured as a spherical surface (21); the port of the dust collecting main pipe outlet end (10) is circular, and an inwardly facing chamfered surface (12) is provided at the port, and the curvature of the chamfered surface (12) is the same as the curvature of the spherical surface (21) of the circular cover plate.

4. A sealing device for a dust collecting main pipe according to claim 2, characterized in that: The port of the dust collecting main pipe outlet (10) is square, and an inward notch is provided at the port; the sealing cover (20) is configured as a square cover plate, and a protrusion is provided at the edge of the lower convex surface of the square cover plate, and the protrusion and the notch are snap-fitted.

5. A sealing device for a dust collecting main pipe according to claim 2 or 3, characterized in that: The opening and closing portion (30) comprises a horizontal rod (31), an inclined push rod (32), a vertical rod (33) and a base (51); one end of the horizontal rod (31) is connected to the connecting piece (22), and the other end is connected to the inclined push rod (32), and the connection between the horizontal rod (31) and the inclined push rod (32) forms an obtuse angle; the top of the vertical rod (33) and the connection between the horizontal rod (31) and the inclined push rod (32) are hinged, and the bottom is vertically connected to the base (51); the base (51) is connected to the coke oven top on one side of the dust collecting main pipe outlet end (10).

6. A sealing device for a dust collecting main pipe according to claim 5, characterized in that: It also includes a horizontal push rod (35); there are two horizontal rods (31) and two oblique push rods (32), which are symmetrically distributed along the center line of the sealing cover (20); the horizontal push rod (35) connects the ends of two adjacent oblique push rods (32), and the horizontal push rod (35) is connected to the furnace top vehicle.

7. A sealing device for a dust collecting main pipe according to claim 6, characterized in that: It also includes a connecting short rod (34), a first pressure rod (311) and a second pressure rod (312); the top of the connecting short rod (34) is vertically connected to the horizontal rod (31), and the bottom is hinged to the connecting piece (22); both ends of the first pressure rod (311) and the second pressure rod (312) are respectively vertically connected to the adjacent horizontal rod (31), and are symmetrically distributed along the sealing cover (20), and the first pressure rod (311) is provided with a first pressing bolt (41), and the second pressure rod (312) is provided with a second pressing bolt (42), and the bottom ends of the first pressing bolt (41) and the second pressing bolt (42) are in contact with the upper end surface of the sealing cover (20).

8. A sealing device for a dust collecting main pipe according to claim 7, characterized in that: An annular ring (11) is sleeved on the dust collecting main pipe outlet end (10).

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