Flap valve assembly of preheater

Abstract

The utility model relates to a flap valve assembly of a preheater, which aims to solve the technical problem that a flap valve needs to be continuously adjusted in the current alignment process, and comprises a flap valve body, a lower-stage channel and a connecting structure, the connecting structure is arranged at the joint of the flap valve body and the lower-stage channel; the connecting structure comprises a fixed annular plate, a movable annular plate and an annular baffle. The fixed ring plate is connected to the lower-stage channel in a sleeving manner; the movable annular plate is arranged on the lower-stage channel in a sleeving manner; a threaded rod is arranged on one side of the movable annular plate in a threaded penetrating mode, the top end of the threaded rod is rotationally connected with one side of the bottom end of the fixed annular plate, and a rotating handle is fixedly arranged at the bottom end of the threaded rod. The flap valve has the advantages that a flange plate at the bottom end of the flap valve body and a flange plate at the top end of a lower-stage channel can be quickly aligned and butted, and the flap valve is convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of preheater components, in particular to a preheater flap valve assembly. Background Art

[0002] The preheater uses the flue gas in the tail flue of the boiler to preheat the air before entering the boiler to a certain temperature through the internal heat sink. It is used to improve the heat exchange performance of the boiler and reduce energy consumption. The preheater is often used in the cement production industry.

[0003] The flap valve is a connecting component between multi-stage preheaters, and the flap valve is used to control the flow between the multi-stage preheaters. When installing the existing flap valve, the flange at the bottom of the flap valve is placed on the top flange of the lower preheater channel. It is necessary to align the flange at the bottom of the flap valve with the top flange of the lower preheater channel and make the mounting holes correspond. During the alignment process, the flap valve needs to be adjusted continuously, which is inconvenient to operate.

[0004] In view of this, we propose a preheater flap valve assembly. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a preheater flap valve assembly to solve the current technical problem of constantly adjusting the flap valve during the alignment process.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a preheater flap valve assembly, including a flap valve body and a lower-level channel, the flange at the bottom end of the flap valve body is butted with the flange at the top end of the lower-level channel, and also includes a connection structure;

[0007] The connection structure is arranged at the connection between the flap valve body and the lower channel;

[0008] The connecting structure comprises a fixed ring plate, a movable ring plate and an annular baffle;

[0009] The fixed ring plate is sleeved on the lower channel;

[0010] Wherein, a gap is left between the fixed ring plate and the flange at the top of the lower channel;

[0011] The movable ring plate is sleeved on the lower channel;

[0012] A threaded rod is threaded through one side of the movable ring plate, the top of the threaded rod is rotatably connected to one side of the bottom end of the fixed ring plate, and a rotating handle is fixed at the bottom end of the threaded rod;

[0013] The annular baffle is fixedly arranged on the outer ring of the top end of the movable ring plate;

[0014] Among them, the inner side of the annular baffle is in contact with and matched with the flange at the bottom end of the flap valve body and the outer ring wall of the flange at the top end of the lower channel.

[0015] Preferably, three guide rods equidistantly distributed in an annular direction are provided on the movable ring plate, and the top ends of the guide rods are fixedly connected to the bottom ends of the fixed ring plate.

[0016] Preferably, the lengths of the threaded rod and the guide rod are greater than the height of the annular baffle.

[0017] Preferably, the outer ring of the flap valve body is fixed with a plurality of limit plates in an annular array, the top of the annular baffle is correspondingly provided with a plurality of limit grooves in an annular array, and the bottom end of the limit plate is plugged into and matched with the limit groove.

[0018] Preferably, the opening end of the limiting groove is in an outward-facing "X" shape.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model has the advantages of quickly aligning and docking the flange at the bottom end of the flap valve body with the flange at the top end of the lower channel by arranging a fixed ring plate, a movable ring plate, an annular baffle, a threaded rod and a rotating handle, which is convenient for installation and solves the problem of aligning the flange at the bottom of the flap valve with the flange at the top end of the lower preheater channel, and the need to constantly adjust the flap valve during the alignment process, which causes certain inconveniences in operation.

[0021] 2. The utility model has the advantage of guiding and limiting the movable ring plate that moves longitudinally by setting the guide rod, so that the movable ring plate remains stable when moving longitudinally.

[0022] 3. The utility model sets a limit plate and a limit groove, and has a connection between the bottom end of the limit plate and the limit groove, so as to limit the installation position of the flange at the bottom end of the flap valve body relative to the annular baffle, so that the flange at the bottom end of the flap valve body corresponds to the installation hole on the flange at the top end of the lower channel, which is convenient for installation and positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0025] Figure 3 It is a cross-sectional connection schematic diagram of the connection structure of the utility model;

[0026] Figure 4 For the utility model Figure 3 A magnified schematic diagram of point A;

[0027] In the figure: 1. flap valve body; 2. lower channel; 3. connection structure;

[0028] 101, limit plate;

[0029] 301, fixed ring plate; 302, movable ring plate; 303, guide rod; 304, threaded rod; 305, rotating handle; 306, annular baffle;

[0030] 3061, limit groove. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0032] Example 1: A preheater flap valve assembly, see Figures 1 to 4 , including a flap valve body 1 and a lower channel 2, the flange at the bottom end of the flap valve body 1 is butted with the flange at the top end of the lower channel 2, and also includes a connecting structure 3;

[0033] The connection structure 3 is arranged at the connection between the flap valve body 1 and the lower channel 2;

[0034] The connecting structure 3 includes a fixed ring plate 301, a movable ring plate 302 and an annular baffle 306;

[0035] The fixed ring plate 301 is sleeved on the lower channel 2; wherein a gap is left between the fixed ring plate 301 and the flange at the top of the lower channel 2; the movable ring plate 302 is sleeved on the lower channel 2; wherein a threaded rod 304 is threadedly penetrated on one side of the movable ring plate 302, the top of the threaded rod 304 is rotatably connected to one side of the bottom end of the fixed ring plate 301, and a rotating handle 305 is fixed at the bottom end of the threaded rod 304; the annular baffle 306 is fixed to the outer ring of the top end of the movable ring plate 302; wherein the inner side of the annular baffle 306 is in contact with and cooperates with the flange at the bottom end of the flap valve body 1 and the outer ring wall of the flange at the top end of the lower channel 2.

[0036] The utility model has the advantage of quickly aligning and docking the flange at the bottom end of the flap valve body 1 with the flange at the top end of the lower channel 2 by setting a fixed ring plate 301, a movable ring plate 302, a ring baffle 306, a threaded rod 304 and a rotating handle 305, which is convenient for installation, and solves the problem of aligning the flange at the bottom of the flap valve with the flange at the top of the lower preheater channel, and the need to constantly adjust the flap valve during the alignment process, which causes certain inconveniences in operation.

[0037] Specifically, three guide rods 303 equidistantly distributed in an annular direction are provided on the movable ring plate 302 . The top end of the guide rods 303 is fixedly connected to the bottom end of the fixed ring plate 301 . The three guide rods 303 and a threaded rod 304 form an annular array distributed on the movable ring plate 302 .

[0038] The utility model has the advantage of guiding and limiting the movable ring plate 302 which moves longitudinally by setting the guide rod 303, so that the movable ring plate 302 can remain stable when moving longitudinally.

[0039] Furthermore, the length of the threaded rod 304 and the guide rod 303 is greater than the height of the annular baffle 306; the annular baffle 306 is sufficient to be lowered to a position lower than the flange at the top of the lower channel 2 without affecting the docking and fixation of the flange at the bottom end of the flap valve body 1 with the flange at the top of the lower channel 2.

[0040] Furthermore, a plurality of limit plates 101 are fixedly arranged in an annular array on the outer ring of the flap valve body 1 , a plurality of limit grooves 3061 are correspondingly provided in an annular array on the top of the annular baffle 306 , and the bottom of the limit plate 101 is plugged into and matched with the limit groove 3061 .

[0041] The utility model sets a limit plate 101 and a limit groove 3061, and has a connection between the bottom end of the limit plate 101 and the limit groove 3061, so as to limit the installation position of the flange at the bottom end of the flap valve body 1 relative to the annular baffle 306, so that the flange at the bottom end of the flap valve body 1 corresponds to the installation hole on the flange at the top end of the lower channel 2, which is convenient for installation and positioning.

[0042] It is worth noting that the opening end of the limiting groove 3061 is in an outward-facing "X" shape, which facilitates the bottom end of the limiting plate 101 to be inserted into the limiting groove 3061 .

[0043] Working principle: When using the device of the present invention, before installing the flap valve body 1, turn the handle 305, the threaded rod 304 rotates to drive the movable ring plate 302 to move upward along the guide rod 303 until the top of the movable ring plate 302 contacts the bottom of the fixed ring plate 301, and the annular baffle 306 covers the flange at the top of the lower channel 2; put the flange at the bottom end of the flap valve body 1 into the annular baffle 306, and the flange at the bottom end of the flap valve body 1 descends along the inner wall of the annular baffle 306 until the bottom end of the limit plate 101 contacts the top of the annular baffle 306. If the bottom end of the limit plate 101 is not inserted into the limit groove 3061, rotate the flap valve body 1 to drive the limit plate 101 to rotate relative to the annular baffle 306 until the bottom end of the limit plate 101 is inserted into the limit groove 3061. At this time, the flange at the bottom end of the flap valve body 1 is aligned with the flange at the top end of the lower channel 2 and the mounting holes correspond. The handle 305 is rotated in the opposite direction, and the movable ring plate 302 moves downward along the guide rod 303 until the annular baffle plate 306 no longer covers the flange, and the flange at the bottom end of the flap valve body 1 is fixed to the flange at the top end of the lower channel 2 by bolts and nuts.

[0044] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A preheater flap valve assembly, comprising a flap valve body (1) and a lower channel (2), wherein a flange at the bottom end of the flap valve body (1) is butted against a flange at the top end of the lower channel (2), characterized in that: Also includes: A connecting structure (3) is arranged at the connection between the flap valve body (1) and the lower channel (2); The connection structure (3) comprises: A fixed ring plate (301) sleeved on the lower channel (2); Wherein, a gap is left between the fixed ring plate (301) and the flange at the top end of the lower channel (2); A movable ring plate (302) is sleeved on the lower channel (2); A threaded rod (304) is threadedly inserted into one side of the movable ring plate (302), the top of the threaded rod (304) is rotatably connected to one side of the bottom of the fixed ring plate (301), and a rotating handle (305) is fixedly disposed at the bottom of the threaded rod (304); An annular baffle (306) is fixedly mounted on the outer ring of the top end of the movable annular plate (302); The inner side of the annular baffle (306) is in contact with and fits with the flange at the bottom end of the flap valve body (1) and the outer wall of the flange at the top end of the lower channel (2).

2. A preheater flap valve assembly according to claim 1, characterized in that: At least one guide rod (303) is provided on the movable ring plate (302), and the top end of the guide rod (303) is fixedly connected to the bottom end of the fixed ring plate (301).

3. A preheater flap valve assembly according to claim 2, characterized in that: The lengths of the threaded rod (304) and the guide rod (303) are greater than the height of the annular baffle (306).

4. A preheater flap valve assembly according to claim 1, characterized in that: The outer ring of the flap valve body (1) is fixedly provided with a plurality of limit plates (101) in an annular array, the top end of the annular baffle plate (306) is correspondingly provided with a plurality of limit grooves (3061) in an annular array, and the bottom end of the limit plate (101) is plugged into and matched with the limit groove (3061).

5. A preheater flap valve assembly according to claim 4, characterized in that: The opening end of the limiting groove (3061) is in an outward-facing "X" shape.

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