Furnace throat expansion joint

Abstract

The utility model belongs to the technical field of furnace throat expansion joints, and particularly relates to a furnace throat expansion joint which comprises a corrugated pipe, connecting pipes are connected to the two ends of the corrugated pipe, a connecting flange is connected to the end, away from the corrugated pipe, of each connecting pipe, and a first guide cylinder is arranged in each connecting flange. A first aluminum silicate fiber cotton layer is arranged between the first guide cylinder and the connecting pipe, a second guide cylinder is arranged at one end in the first guide cylinder, and a second aluminum silicate fiber cotton layer is arranged between the second guide cylinder and the first guide cylinder. The sealing groove is formed in the surface of the connecting flange, the sealing rubber strip is bonded in the sealing groove, after the connecting flange is connected, the protruding part of the sealing rubber strip is squeezed, and therefore the sealing effect of the connecting position of the connecting flange is improved; and a user can take out the damaged sealing rubber strip in the sealing groove from the groove, so that the sealing rubber strip is convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of furnace throat expansion joint, specifically relates to a furnace throat expansion joint. BACKGROUND

[0002] Expansion joint, also known as expansion joint, is a kind of element for compensating the thermal elongation or installation error of pipeline, container, equipment and the like due to temperature change. It can relieve stress due to temperature, pressure and the like change, and protect pipeline and equipment from damage. At furnace throat position, expansion joint also plays such a role, which can compensate thermal expansion of furnace throat due to temperature change, and ensure stability and safety of furnace throat.

[0003] At present, the existing furnace throat expansion joint usually needs to be connected and fixed by the connecting flange at the end during use, but the flange at the end of the traditional furnace throat expansion joint does not have a sealing structure, so the sealing effect of the flange connection place can be poor, which can cause the joint of the expansion joint flange to have a gap and be easy to fall off, and high temperature enters the expansion joint, which cannot filter and convert gas and causes air pollution. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of furnace throat expansion joints, to solve the problem that the existing furnace throat expansion joint in prior art is usually connected and fixed by the connecting flange at the end during use, but the flange at the end of the traditional furnace throat expansion joint does not have a sealing structure, so the sealing effect of the flange connection place can be poor, which can cause the joint of the expansion joint flange to have a gap and be easy to fall off, and high temperature enters the expansion joint, which cannot filter and convert gas and causes air pollution.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of furnace throat expansion joint, including bellows, the both ends of the bellows are connected with connecting pipe, the end of the connecting pipe away from bellows is connected with connecting flange, the inside of the connecting flange is provided with first guide cylinder, first aluminium silicate fiber cotton layer is arranged between the first guide cylinder and connecting pipe, the inside one end of the first guide cylinder is provided with second guide cylinder, second aluminium silicate fiber cotton layer is arranged between the second guide cylinder and first guide cylinder, sealing groove is set on the surface of the connecting flange, sealing rubber strip is bonded in the inside of the sealing groove.

[0006] As a preferred furnace throat expansion joint of the utility model, recess is set on the surface of the connecting flange.

[0007] As a preferred furnace throat expansion joint of the utility model, the recess is connected with the sealing groove.

[0008] The utility model provides a kind of expansion joint of furnace throat, it is connected with the expansion joint of furnace throat by connecting flange, and the connecting flange is connected with the expansion joint of furnace throat by connecting pipe.

[0009] As a kind of expansion joint of furnace throat of the utility model, pull rod is connected between multiple support ears.

[0010] As a kind of expansion joint of furnace throat of the utility model, protective sleeve is sleeved on the outer wall of connecting pipe, and through hole is formed in the outer wall of protective sleeve.

[0011] As a kind of expansion joint of furnace throat of the utility model, connecting flange is compatible with the inside dimension of protective sleeve.

[0012] Compared with prior art, the utility model has the beneficial effects that:

[0013] By setting sealing groove on the surface of connecting flange, and sticking sealing rubber strip in it, when connecting flange is connected, the protruding part of sealing rubber strip is extruded, so as to improve the sealing effect of connecting flange connection, and by setting recess, since recess is communicated with sealing groove, user can take out damaged sealing rubber strip in sealing groove from recess, so as to facilitate replacement.

[0014] By moving protective sleeve along the outer wall of connecting pipe, and making protective sleeve fit with connecting flange, connecting flange is located inside protective sleeve at this time, so as to cover and protect the connection of connecting flange after being connected and fixed. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model, and constitute part of specification, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute limitation to the utility model. In the drawings:

[0016] Figure 1 It is the first main view structural schematic diagram of the utility model;

[0017] Figure 2 It is the main view cross section structural schematic diagram of the utility model;

[0018] Figure 3 It is the second main view structural schematic diagram of the utility model;

[0019] Figure 4 It is the A enlarged structural schematic diagram of the utility model;

[0020] Figure 5 It is the B enlarged structural schematic diagram of the utility model.

[0021] In the figure: 1, bellows; 2, connecting pipe; 3, connecting flange; 4, first guide cylinder; 5, first aluminum silicate fiber cotton layer; 6, second guide cylinder; 7, second aluminum silicate fiber cotton layer; 8, sealing groove; 9, sealing rubber strip; 10, groove; 11, protective sleeve; 12, through hole; 13, supporting lug; 14, pull rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides the following technical scheme: a furnace throat expansion joint, including bellows 1, the both ends of bellows 1 are connected with connecting pipe 2, the end away from bellows 1 of connecting pipe 2 is connected with connecting flange 3, the inside of connecting flange 3 is provided with first guide cylinder 4, first guide cylinder 4 and connecting pipe 2 are provided with first aluminum silicate fiber cotton layer 5, the inside one end of first guide cylinder 4 is provided with second guide cylinder 6, second guide cylinder 6 and first guide cylinder 4 are provided with second aluminum silicate fiber cotton layer 7, the surface of connecting flange 3 is provided with sealing groove 8, sealing groove 8 is bonded with sealing rubber strip 9 in the inside.

[0024] Preferably, the surface of the connecting flange 3 is provided with a groove 10, and the groove 10 is in communication with the sealing groove 8.

[0025] In specific use, the sealing groove 8 is provided on the surface of the connecting flange 3, and the sealing rubber strip 9 is bonded therein. When the connecting flange 3 is connected, the protruding part of the sealing rubber strip 9 is extruded, thereby improving the sealing effect of the connecting flange 3. In addition, the groove 10 is provided, and the groove 10 is in communication with the sealing groove 8. Therefore, the user can take out the damaged sealing rubber strip 9 in the sealing groove 8 from the groove 10, thereby facilitating replacement.

[0026] Preferably, the outer wall of the connecting pipe 2 is connected with a plurality of supporting lugs 13, the plurality of supporting lugs 13 are opposite to each other, and the plurality of supporting lugs 13 are connected with a pull rod 14.

[0027] It should be noted that the both ends of the pull rod 14 are threadedly connected with the nuts after penetrating the supporting lugs 13.

[0028] Preferably, the outer wall of the connecting pipe 2 is sleeved with a protective sleeve 11, the outer wall of the protective sleeve 11 is provided with a through hole 12, and the connecting flange 3 is matched with the inner side of the protective sleeve 11 in size.

[0029] In use, the protective sleeve 11 is moved along the outer wall of the connecting pipe 2 and is attached to the connecting flange 3, and the connecting flange 3 is located inside the protective sleeve 11, so that the connecting flange 3 is fixed, and the protective sleeve 11 can cover and protect the connecting part of the connecting flange 3.

[0030] It should be noted that the through hole 12 corresponds to the number and position of the mounting holes on the connecting flange 3, so that the connecting flange 3 can pass through the through hole 12 after the bolt is passed through, and then is connected with the nut, so that the protective sleeve 11 can be fixed.

[0031] Working principle: first, the sealing groove 8 is opened on the surface of the connecting flange 3, and the sealing rubber strip 9 is adhered therein, when the connecting flange 3 is connected, the protruding part of the sealing rubber strip 9 is extruded, so as to improve the sealing effect of the connecting part of the connecting flange 3, and through the setting of the groove 10, since the groove 10 is communicated with the sealing groove 8, the user can take out the damaged sealing rubber strip 9 in the sealing groove 8 from the groove 10, so as to facilitate replacement, then the protective sleeve 11 is moved along the outer wall of the connecting pipe 2 and is attached to the connecting flange 3, and the connecting flange 3 is located inside the protective sleeve 11, so that the connecting flange 3 is fixed, and the protective sleeve 11 can cover and protect the connecting part of the connecting flange 3.

[0032] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A furnace throat expansion joint comprising a bellows (1), characterised in that: Both ends of the bellows (1) are connected with connecting pipes (2), one end of the connecting pipe (2) is connected with a connecting flange (3) away from the bellows (1), the inside of the connecting flange (3) is provided with a first guide cylinder (4), the first guide cylinder (4) and the connecting pipe (2) are provided with a first aluminum silicate fiber cotton layer (5), one end of the inside of the first guide cylinder (4) is provided with a second guide cylinder (6), the second guide cylinder (6) and the first guide cylinder (4) are provided with a second aluminum silicate fiber cotton layer (7), the surface of the connecting flange (3) is provided with a sealing groove (8), the inside of the sealing groove (8) is bonded with a sealing rubber strip (9).

2. A furnace throat expansion joint according to claim 1, characterised in that: The surface of the connecting flange (3) is provided with a groove (10).

3. A furnace throat expansion joint according to claim 2, characterised in that: The groove (10) is communicated with the sealing groove (8).

4. A furnace throat expansion joint as claimed in claim 1, characterized in that: The outer wall of the connecting pipe (2) is connected with a plurality of supporting ears (13), and the plurality of supporting ears (13) are opposite to each other in pairs.

5. A furnace throat expansion joint according to claim 4, characterised in that: A plurality of the supporting ears (13) are connected with a pull rod (14).

6. A furnace throat expansion joint as claimed in claim 1, characterized in that: The outer wall of the connecting pipe (2) is sleeved with a protective sleeve (11), and the outer wall of the protective sleeve (11) is provided with a through hole (12).

7. A furnace throat expansion joint according to claim 6, characterised in that: The connecting flange (3) and the inside of the protective sleeve (11) are compatible in size.

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