A flue gas circulation device, a flue gas circulation upper cover and a sealing device thereof

Abstract

The present invention belongs to the technical field of sintering flue gas circulation, and discloses a flue gas circulation upper cover sealing device, including: a sealing bracket and a first sealing gasket and a third sealing gasket fixed on the sealing bracket; the sealing bracket includes: a support rod, a limiting plate, a reset spring and a floating plate; the floating plate is fixed on the support rod, a limiting hole is provided on the limiting plate, the support rod is embedded in the limiting hole, a locking piece is provided at the first end of the support rod, the reset spring is sleeved on the support rod and limited between the locking piece and the limiting plate; the floating plate is fixed on the support rod and is located between the second end of the support rod and the limiting plate; the first sealing gasket includes: a first fixing part and a first contact sealing part; the first fixing part is fixed on the floating plate; the third sealing gasket includes: a third fixing part, a third contact sealing part and a fourth fixing part; the third fixing part is fixed on the floating plate and is located between the support contact part and the support rod, and the first contact sealing part is arranged between the third fixing part and the fourth fixing part. The sealing performance of the present invention is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of sintering fume circulation, and in particular to a fume circulation device, a fume circulation upper cover and a sealing device thereof. Background Art

[0002] During the sintering flue gas circulation, the flue gas is distributed to the material surface through the flue gas circulation upper cover; in order to prevent the leakage of flue gas, a normal sealing strip and other structures are usually arranged between the flue gas circulation upper cover and the trolley to limit the leakage of flue gas. However, as the production cycle increases, the sealing performance will deteriorate sharply, resulting in personnel injuries and heat loss. Summary of the invention

[0003] The invention provides a flue gas circulation device, a flue gas circulation upper cover and a sealing device thereof, which solve the technical problems of poor sealing performance and instability of the flue gas circulation upper cover in the prior art.

[0004] In order to solve the above technical problems, the present invention provides a fume circulation upper cover sealing device, comprising: a sealing bracket and a first sealing gasket and a third sealing gasket fixed on the sealing bracket;

[0005] The sealing bracket comprises: a support rod, a limit plate, a return spring and a floating plate;

[0006] The floating plate is fixed on the support rod, the limiting plate is provided with a limiting hole, the rod body of the support rod is embedded in the limiting hole, the first end of the support rod is provided with a locking piece, the return spring is sleeved on the rod body of the support rod and the return spring is limited between the locking piece and the first plate surface of the limiting plate;

[0007] The floating plate is fixed on the support rod, and the floating plate is located between the second end of the support rod and the second plate surface of the limiting plate, and a supporting contact portion is provided on the floating plate;

[0008] The first sealing gasket comprises: a first fixing portion and a first contact sealing portion;

[0009] The first fixing portion is fixed to the floating plate;

[0010] The third sealing gasket comprises: a third fixing portion, a third contact sealing portion and a fourth fixing portion;

[0011] The three fixing parts are fixed on the floating plate, and the third fixing part is located between the supporting contact part and the support rod. The fourth fixing part is provided with a fastening structure for fixing on the upper cover, and the first contact sealing part is arranged between the third fixing part and the fourth fixing part.

[0012] A flue gas circulation upper cover, comprising: an upper cover body and the flue gas circulation upper cover sealing device;

[0013] The limiting plate is fixed on the upper cover body, the first contact sealing portion is against the upper cover body, the fourth fixing portion is fixed on the upper cover body and the third sealing contact portion is bent into an arc to form an elastic sealing structure.

[0014] Furthermore, the sealing bracket further comprises: a groove pulley pair;

[0015] The groove pulley pair is rotatably fixed on the upper cover body, and the groove pulley pair is symmetrically arranged on both sides of the rod body of the support rod.

[0016] Furthermore, the number of the groove pulley pairs is multiple.

[0017] Furthermore, the number of the groove pulley pairs is two, and the two pairs of groove pulley pairs are respectively arranged on both sides of the floating plate.

[0018] Furthermore, the fume circulation upper cover sealing device further comprises: a second sealing gasket;

[0019] The second sealing gasket comprises: a second fixing portion, a nesting portion and a second contact sealing portion;

[0020] The second fixing portion is fixed on the floating plate, the nesting portion is provided with a nesting through hole, and the nesting through hole is sleeved on the rod body of the support rod, and the second contact sealing portion abuts against the upper cover body.

[0021] Furthermore, the supporting contact portion is provided with a convex ridge.

[0022] Furthermore, the flue gas circulation upper cover also includes: a soft magnetic sealing brush;

[0023] The soft magnetic sealing brush is fixed on the inner side of the sealing upper cover.

[0024] A flue gas circulation device, comprising: a trolley and the flue gas circulation upper cover;

[0025] The supporting contact portion abuts against the top end surface of the side wall of the trolley, and the third sealing contact portion elastically abuts against the side wall of the trolley.

[0026] Further, the first fixing portion is fixed on the upper surface of the floating plate, the third fixing portion is fixed on the lower surface of the floating plate, and the fourth fixing portion is located below the floating plate.

[0027] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0028] The flue gas circulation device, flue gas circulation upper cover and sealing device thereof provided in the embodiments of the present application realize elastic contact between the upper cover and the trolley through a sealing bracket, cushion the impact between the two, thereby reducing the sealing gap, thereby relatively improving the reliability and stability of the sealing; at the same time, a first sealing gasket is arranged on the floating plate to isolate the sealing bracket to form a first seal, and on the other hand, the third sealing gasket is arranged on the floating plate, and the fourth fixing portion is used to be fixed on the upper cover, so that the third sealing gasket forms a curved structure, which is in contact and sealed with the trolley, thereby forming a third seal; a continuous sealing structure isolation bracket structure composed of the first seal, the floating plate and the third seal is formed, thereby realizing elastic contact sealing on the basis of reducing the sealing gap as a whole, thereby ensuring the quality and stability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a flue gas circulation upper cover sealing device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic diagram of the structure of a sealing bracket provided in an embodiment of the present invention;

[0031] Figure 3 for Figure 2 A partial enlarged view of

[0032] Figure 4 A schematic diagram of the structure of a support body provided by an embodiment of the present invention;

[0033] Figure 5 The floating plate provided in the embodiment of the present invention is shown in the sealing structure schematic diagram;

[0034] Figure 6 A schematic diagram of the sealing structure of the upper cover end provided in an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the gap sealing structure between the trolley end and the upper cover end provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] The embodiment of the present application solves the technical problems of poor and unstable sealing performance of the flue gas circulation upper cover in the prior art by providing a flue gas circulation upper cover sealing device.

[0037] In order to better understand the above-mentioned technical scheme, the above-mentioned technical scheme will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0038] See also Figure 1 A flue gas circulation upper cover sealing device comprises: a sealing bracket and a first sealing gasket 91 and a third sealing gasket 93 fixed on the sealing bracket; specifically, the flue gas circulation upper cover sealing device is fixed on the upper cover 1 to achieve elastic contact sealing between the upper cover 1 and the trolley 2, and can better suppress the sealing gap from achieving stable sealing.

[0039] See also Figure 1 , Figure 2 and Figure 4 Specifically, the sealing bracket includes: a support rod 4, a limiting plate 5, a reset spring 6 and a floating plate 3; the floating plate 3 is fixed on the support rod 4, a limiting hole is provided on the limiting plate 5, the rod body of the support rod 4 is embedded in the limiting hole, the first end of the support rod 4 is provided with a locking piece 61, the reset spring 6 is sleeved on the rod body of the support rod 4 and the reset spring 6 is limited between the locking piece 61 and the first plate surface of the limiting plate 5; thereby, the support rod 4 has an axial elastic reset capability.

[0040] On this basis, the floating plate 3 is fixed on the support rod 4, and the floating plate 3 is located between the second end of the support rod 4 and the second plate surface of the limit plate 5, and a supporting contact portion is provided on the floating plate 3; generally, the supporting contact portion is located on the lower plate surface of the floating plate, so that in the assembled state, the floating plate 3 is placed on the trolley 2 through the supporting contact portion, and when the trolley 2 vibrates, the sealing bracket can absorb the vibration energy to a certain extent, reduce the sealing gap between the upper cover 1 and the trolley 2, thereby improving the reliability and stability of the sealing performance to a certain extent.

[0041] The first sealing gasket 91 includes: a first fixing portion and a first contact sealing portion; the first fixing portion is fixed on the floating plate 3; after being assembled in use, the first contact sealing portion abuts against the inner wall of the upper cover 1 to achieve a first seal.

[0042] The third sealing gasket 93 includes: a third fixing portion, a third contact sealing portion and a fourth fixing portion; the three fixing portions are fixed on the floating plate 3, and the third fixing portion is located between the supporting contact portion and the support rod 4, the fourth fixing portion is provided with a fastening structure for fixing on the upper cover 1, and the first contact sealing portion is arranged between the third fixing portion and the fourth fixing portion, that is, in the assembly working state, the fourth fixing portion is fixed on the upper cover 1, generally located below the sealing bracket, so that the third contact sealing portion is bent to form a house-type structure, which is used to elastically contact with the side wall of the trolley 2 to achieve good sealing; it is worth noting that the protruding part of the third contact sealing portion in the bent state contacts and rests on the trolley 2, and it is worth noting that the contact in the bent state has a very high rebound space, and also has a good elastic contact pressure, thereby ensuring a reliable contact seal and forming a third seal.

[0043] Generally speaking, the third fixing portion can be further extended to abut against the inner wall of the upper cover 1. A hole is also opened on the extended portion to facilitate the passage of the support rod 4.

[0044] Thus, as a whole, a connecting sealing structure based on the first seal, the floating plate 3 and the third seal is realized, so that the gap between the upper cover 1 and the trolley 2 can be sealed; at the same time, the elastic structure of the sealing bracket itself can suppress the expansion of the sealing gap, thereby forming a high-quality sealing structure as a whole.

[0045] Generally speaking, soft magnetic sealing brushes 8 are also erected in front of the sixth sealing gasket 96 hung on the outer side of the guardrail of the trolley 2 to protect the sealing gasket and increase the sealing performance.

[0046] This embodiment also provides an upper cover structure provided with the above-mentioned sealing device; the details are described below.

[0047] A flue gas circulation upper cover comprises an upper cover body and the flue gas circulation upper cover sealing device.

[0048] The limiting plate 5 is fixed on the upper cover body, the first contact sealing portion is against the upper cover body, the fourth fixing portion is fixed on the upper cover body and the third sealing contact portion is bent into an arc to form an elastic sealing structure.

[0049] Generally speaking, the first sealing gasket 91 is in a bent state when assembled, and the contact sealing portion fits against the upper cover body, thereby having a larger sealing surface; it is also worth noting that the first sealing gasket 91 can be firmly pressed against the inner wall of the upper cover 1 under the high temperature and high pressure conditions in the upper cover, further improving the sealing reliability.

[0050] See also Figure 2 and Figure 3Furthermore, due to the influence of factors such as working condition vibration, the sealing performance is affected to a certain extent. In view of this, the sealing bracket also includes: a groove pulley pair 71; the groove pulley pair 71 is rotatably fixed on the inner wall of the upper cover 1, and the groove pulley pair 71 is symmetrically arranged on both sides of the rod body of the support rod 4, so as to ensure its smooth axial movement and limit radial shaking, thereby ensuring the sealing reliability of the upper cover 1.

[0051] In order to ensure the reliability of the limit, the number of the groove pulley pairs 71 is multiple pairs. In this embodiment, the number of the groove pulley pairs 71 is two pairs, and the two pairs of groove pulley pairs 71 are respectively arranged on both sides of the floating plate 3. That is to say, a second groove pulley pair 72 is arranged below the floating plate 3 and above the limit plate 5 to ensure the stable movement of the floating plate 3.

[0052] Furthermore, the flue gas circulation upper cover sealing device also includes: a second sealing gasket 92; the second sealing gasket 92 includes: a second fixing portion, a nesting portion and a second contact sealing portion; the second fixing portion is fixed on the floating plate 3, the nesting portion is provided with a nesting through hole, and the nesting through hole is sleeved on the rod body of the support rod 4, and the second contact sealing portion is against the inner wall of the body of the upper cover 1; a second seal is formed to further enhance the sealing performance.

[0053] Since the floating plate 3 can sense the displacement of the trolley 2, thereby achieving elastic buffering, in order to reduce the interference of uneven contact surfaces and debris, the supporting contact portion is provided with ridges to reduce the contact surface, thereby being able to stably sense the vibration of the trolley 2 and improving the stability of the seal.

[0054] Furthermore, the flue gas circulation upper cover also includes: a soft magnetic sealing brush 8; the soft magnetic sealing brush 8 is fixed inside the sealing upper cover. Generally speaking, the soft magnetic sealing brush 8 is located at the bottom to achieve the fourth seal, and can also absorb and accumulate magnetic particles to enhance the sealing effect.

[0055] See also Figure 5 A fourth sealing gasket 95 is also provided on the floating plate 3, so that two connected fourth sealing gaskets 95 are stacked to seal the gap between them; it is worth noting that the stacking direction of all the fourth sealing gaskets 95 is consistent, similar to the stacking direction of fish scales, so that under the impact of the airflow in the upper cover, a good sealing effect can still be maintained.

[0056] See also Figure 6 and Figure 7 It is worth noting that the edge of the fourth sealing gasket 95 at the edge is fixed on the upper cover 1 with a margin, so as to achieve good sealing while not affecting the up and down movement of the floating plate 3.

[0057] Generally speaking, both ends of the upper cover 1 are also provided with a drooping fifth sealing gasket 94, similar to the structure of a door curtain, and the lower edge of the fifth sealing gasket 95 is against the material surface to achieve sealing; generally, the lower edge is cut into broken edges to adapt to the irregular state of the material surface.

[0058] Furthermore, a sixth sealing gasket 96 may be provided in the end region of the trolley 2 to seal the remaining gap between the upper cover 1 and the end of the trolley 2 from the end.

[0059] This embodiment also provides an integrated flue gas circulation device including the above-mentioned upper cover; the details will be described below.

[0060] A flue gas circulation device comprises: a trolley 2 and the flue gas circulation upper cover; the supporting contact portion abuts against the top end surface of the trolley side wall, and the third sealing contact portion elastically abuts against the trolley side wall.

[0061] Further, the first fixing portion is fixed on the upper surface of the floating plate 3 , the third fixing portion is fixed on the lower surface of the floating plate 3 , and the fourth fixing portion is located below the floating plate 3 .

[0062] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0063] The flue gas circulation device, flue gas circulation upper cover and sealing device thereof provided in the embodiments of the present application realize elastic contact between the upper cover and the trolley through a sealing bracket, cushion the impact between the two, thereby reducing the sealing gap, thereby relatively improving the reliability and stability of the sealing; at the same time, a first sealing gasket is arranged on the floating plate to isolate the sealing bracket to form a first seal, and on the other hand, the third sealing gasket is arranged on the floating plate, and the fourth fixing portion is used to be fixed on the upper cover, so that the third sealing gasket forms a curved structure, which is in contact and sealed with the trolley, thereby forming a third seal; a continuous sealing structure isolation bracket structure composed of the first seal, the floating plate and the third seal is formed, thereby realizing elastic contact sealing on the basis of reducing the sealing gap as a whole, thereby ensuring the quality and stability of the seal.

[0064] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A flue gas circulation upper cover sealing device, characterized in that: include: A sealing bracket and a first sealing gasket and a third sealing gasket fixed on the sealing bracket; The sealing bracket comprises: a support rod, a limit plate, a return spring and a floating plate; The floating plate is fixed on the support rod, the limiting plate is provided with a limiting hole, the rod body of the support rod is embedded in the limiting hole, the first end of the support rod is provided with a locking piece, the return spring is sleeved on the rod body of the support rod and the return spring is limited between the locking piece and the first plate surface of the limiting plate; The floating plate is fixed on the support rod, and the floating plate is located between the second end of the support rod and the second plate surface of the limiting plate, and a supporting contact portion is provided on the floating plate; The first sealing gasket comprises: a first fixing portion and a first contact sealing portion; The first fixing portion is fixed to the floating plate; The third sealing gasket comprises: a third fixing portion, a third contact sealing portion and a fourth fixing portion; The third fixing portion is fixed on the floating plate, and the third fixing portion is located between the supporting contact portion and the support rod, the fourth fixing portion is provided with a fastening structure for fixing on the upper cover, and the third contact sealing portion is provided between the third fixing portion and the fourth fixing portion.

2. A flue gas circulation upper cover, characterized in that: include: An upper cover body and a fume circulation upper cover sealing device as claimed in claim 1; The limiting plate is fixed on the upper cover body, the first contact sealing portion is against the upper cover body, the fourth fixing portion is fixed on the upper cover body and the third contact sealing portion is bent into an arc to form an elastic sealing structure.

3. The flue gas circulation upper cover according to claim 2, characterized in that: The sealing bracket also includes: a groove pulley pair; The groove pulley pair is rotatably fixed on the upper cover body, and the groove pulley pair is symmetrically arranged on both sides of the rod body of the support rod.

4. The flue gas circulation upper cover according to claim 3, characterized in that: The number of the groove pulley pairs is multiple.

5. The flue gas circulation upper cover according to claim 4, characterized in that: The number of the groove pulley pairs is two, and the two pairs of groove pulley pairs are respectively arranged on both sides of the floating plate.

6. The flue gas circulation upper cover according to claim 2, characterized in that: The fume circulation upper cover sealing device further comprises: a second sealing pad; The second sealing gasket comprises: a second fixing portion, a nesting portion and a second contact sealing portion; The second fixing portion is fixed on the floating plate, the nesting portion is provided with a nesting through hole, and the nesting through hole is sleeved on the rod body of the support rod, and the second contact sealing portion abuts against the upper cover body.

7. The flue gas circulation upper cover according to claim 2, characterized in that: The supporting contact portion is provided with convex edges.

8. The flue gas circulation upper cover according to claim 2, characterized in that: The smoke circulation upper cover also includes: a soft magnetic sealing brush; The soft magnetic sealing brush is fixed inside the upper cover body.

9. A flue gas circulation device, characterized in that: include: A trolley and a flue gas circulation upper cover as claimed in claim 8; The supporting contact portion abuts against the top end surface of the side wall of the carriage, and the third contact sealing portion elastically abuts against the side wall of the carriage.

10. The flue gas circulation device according to claim 9, characterized in that: The first fixing portion is fixed on the upper surface of the floating plate, the third fixing portion is fixed on the lower surface of the floating plate, and the fourth fixing portion is located below the floating plate.

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