A flipper door for a baghouse

Abstract

The application provides a flap door for a bag-type dust collector, which is installed at an inlet of the bag-type dust collector, and the inlet is provided with an air inlet, and symmetrical left chamber inlets and right chamber inlets are arranged below the air inlet and communicated with the air inlet. The flap door comprises a flap, a damper support, a crank, a cylinder, a pull rod and a positioning frame. The damper supports are symmetrically arranged at both sides of the air inlet of the bag-type dust collector. A driving adjustment shaft is arranged between the left chamber inlets and the right chamber inlets. The flap is swingably arranged on the driving adjustment shaft. The flap is used to block the passage between the air inlet and the left chamber inlets or the passage between the air inlet and the right chamber inlets. One end of the crank is connected with the driving adjustment shaft, and the other end of the crank is rotatably connected with the cylinder. The cylinder is provided with the positioning frame on one side. The pull rod is connected with the positioning frame and the crank at two ends respectively, and is used to lock the flap. The arrangement form of the flap door can optimize the width of the built-in flue and save the weight of the body.

Description

[Technical Field]

[0001] This invention relates to the technical field of baghouse dust collectors, and in particular to a flap door for a baghouse dust collector. [Background Technology]

[0002] Baghouse dust collectors are divided into several compartments. To enable online maintenance or offline cleaning, each compartment has an independent shell and is equipped with inlet and outlet dampers. The air inlet is generally pneumatically operated and symmetrically arranged in the left and right compartments to open and close the air inlet of each compartment.

[0003] Currently, baghouse dust collectors have symmetrically arranged inlet dampers on both sides, employing two independent pneumatic actuators. To ensure a reasonable arrangement of the dampers and actuators, sufficient flue width is required, increasing the cost of the dust collector's structural components and actuators. Furthermore, the independent arrangement of the left and right dampers wastes space in the middle flue, resulting in a smaller inlet cross-sectional area for the same flue width, leading to higher inlet flue gas velocity and increased equipment resistance. Therefore, a flap door for baghouse dust collectors is proposed. [Summary of the Invention]

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a flap door for a bag filter that can optimize the width of the internal flue and save the weight of the main body.

[0005] To achieve the above objectives, this invention proposes a flap door for a bag filter, installed at the inlet of the bag filter. The inlet has an air inlet, and symmetrically located below the air inlet are a left chamber inlet and a right chamber inlet communicating with it. The flap door includes a flap, a damper support, a crank, a cylinder, a pull rod, and a positioning frame. The damper supports are symmetrically located on both sides of the air inlet of the bag filter. A drive adjustment shaft is provided between the left chamber inlet and the right chamber inlet. A swingable flap is installed on the drive adjustment shaft. The flap is used to block the passage between the air inlet and the left chamber inlet, or to block the passage between the air inlet and the right chamber inlet. One end of the crank is connected to the drive adjustment shaft, and the other end of the crank is rotatably connected to the cylinder. A positioning frame is provided on one side of the cylinder. Both ends of the pull rod are connected to the positioning frame and the crank, respectively, to lock the flap.

[0006] Preferably, a limiting bracket is installed on the inner side of the damper support. The limiting bracket has a V-shaped cross-section. When the flap blocks the passage between the air inlet and the left chamber inlet, or blocks the passage between the air inlet and the right chamber inlet, the upper end face of the limiting bracket abuts against the side wall of the flap.

[0007] Preferably, when the flap abuts against the limiting bracket of the left air door support, it is used to block the passage between the air inlet and the left chamber entrance; when the flap abuts against the limiting bracket of the right air door support, it is used to block the passage between the air inlet and the right chamber entrance.

[0008] Preferably, the two ends of the pull rod are respectively provided with a first connector and a second connector. The first connector is provided with a first mounting hole, and the end of the crank away from the drive adjustment shaft is provided with a second mounting hole for fixing the first connector. The second connector is provided with an oblong hole, and a handle is also provided on one side of the pull rod.

[0009] Preferably, the positioning frame has three fourth mounting holes spaced apart, and each fourth mounting hole has a U-shaped limiting groove below it. The second connector is connected to the fourth mounting hole and the U-shaped limiting groove by fasteners.

[0010] Preferably, inclined first partitions are symmetrically arranged on both sides of the air inlet, and inclined second partitions are symmetrically arranged at the bottom of the left chamber inlet and the right chamber inlet. A support shaft seat is installed at the connection of the upper ends of the two second partitions, and the drive adjustment shaft is installed on the support shaft seat.

[0011] The beneficial effects of this invention are as follows: The invention employs a flap door arrangement, which optimizes the width of the internal flue and reduces the weight of the main body. Simultaneously, the symmetrical arrangement of the left and right chambers, through the coordination of a set of flaps, connecting rods, cylinders, and positioning frames, effectively achieves online maintenance or offline dust removal and isolation. Compared to conventional structures, it saves half the number of devices. The entire system has a simple structure, good sealing performance, convenient maintenance, and low cost.

[0012] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0013] Figure 1 This is a schematic diagram of the internal structure of a flap door for a bag filter according to the present invention;

[0014] Figure 2 yes Figure 1 A diagram showing the view from the right.

[0015] Figure 3 yes Figure 1 Enlarged view of point A;

[0016] Figure 4 This is a structural diagram of the tie rod;

[0017] Figure 5 This is a structural diagram of the positioning frame.

Detailed Implementation Methods

[0018] See Figures 1 to 5This invention discloses a flap door for a bag filter, installed at the inlet of the bag filter. The inlet has an air inlet 101, and symmetrically arranged below the air inlet 101 are a left chamber inlet 102 and a right chamber inlet 103 communicating with it. The flap door includes a flap 1, a damper support 2, a crank 3, a cylinder 4, a pull rod 5, and a positioning frame 6. The damper supports 2 are symmetrically arranged on both sides of the air inlet 101 of the bag filter, and a drive adjustment mechanism is provided between the left chamber inlet 102 and the right chamber inlet 103. The drive adjustment shaft 12 is equipped with a swingable flap 1, which is used to block the passage between the air inlet 101 and the left chamber inlet 102, or to block the passage between the air inlet 101 and the right chamber inlet 103. One end of the crank 3 is connected to the drive adjustment shaft 12, and the other end of the crank 3 is rotatably connected to the cylinder 4. A positioning frame 6 is provided on one side of the cylinder 4. The two ends of the pull rod 5 are respectively connected to the positioning frame 6 and the crank 3 to lock the flap 1.

[0019] Furthermore, a limiting bracket 21 is installed on the inner side of the damper support 2. The limiting bracket 21 has a V-shaped cross section. When the flap 1 blocks the passage between the air inlet 101 and the left chamber inlet 102, or blocks the passage between the air inlet 101 and the right chamber inlet 103, the upper end face of the limiting bracket 21 abuts against the side wall of the flap 1.

[0020] Furthermore, when the flap 1 abuts against the limiting bracket 21 of the left air door support 2, it is used to block the passage between the air inlet 101 and the left chamber entrance 102. When the flap 1 abuts against the limiting bracket 21 of the right air door support 2, it is used to block the passage between the air inlet 101 and the right chamber entrance 103.

[0021] Furthermore, the two ends of the pull rod 5 are respectively provided with a first connector 51 and a second connector 52. The first connector 51 is provided with a first mounting hole 511. The crank 3 is provided with a second mounting hole for fixing the first connector 51 at one end away from the drive adjustment shaft 12. The second connector 52 is provided with an oblong hole 521. The pull rod 5 is also provided with a handle 50 on one side.

[0022] Furthermore, the positioning frame 6 is provided with three fourth mounting holes 61 spaced apart, and each fourth mounting hole 61 is provided with a U-shaped limiting groove 62 below it. The second connector 52 is connected to the fourth mounting holes 61 and the U-shaped limiting groove 62 by fasteners.

[0023] Furthermore, inclined first partitions 1010 are symmetrically arranged on both sides of the air inlet 101, and inclined second partitions are symmetrically arranged at the bottom of the left chamber inlet 102 and the right chamber inlet 103. A support shaft seat 11 is installed at the connection of the upper ends of the two second partitions, and the drive adjustment shaft 12 is installed on the support shaft seat 11.

[0024] The working process of this invention:

[0025] This invention discloses a flap door for a bag filter. A cylinder 4 drives a flap 1 to switch between three positions: left, center, and right. When the flap 1 is on the right, it blocks the passage between the air inlet 101 and the right chamber inlet 103, while the left chamber inlet 102 remains connected to the air inlet 101. When the flap 1 is on the left, it blocks the passage between the air inlet 101 and the left chamber inlet 102, while the right chamber inlet 103 remains connected to the air inlet 101. When the flap 1 is in the center, the air inlet 101 is connected to both the left chamber inlet 102 and the right chamber inlet 103. A pull rod 5 and a positioning frame 6 are used to position the flap at different locations, providing mechanical locking for different switching states during operation and offline, ensuring safe use.

[0026] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A flap door for a bag filter, installed at the inlet of the bag filter, the inlet having an air inlet (101), and symmetrically provided below the air inlet (101) are a left chamber inlet (102) and a right chamber inlet (103) communicating with it, characterized in that: The flap door includes a flap (1), a damper support (2), a crank (3), a cylinder (4), a pull rod (5), and a positioning frame (6). The damper supports (2) are symmetrically arranged on both sides of the air inlet (101) of the bag filter. A drive adjustment shaft (12) is provided between the left chamber inlet (102) and the right chamber inlet (103). A swingable flap (1) is installed on the drive adjustment shaft (12). The flap (1) is used to block the passage between the air inlet (101) and the left chamber inlet (102), or to block the passage between the air inlet (101) and the right chamber inlet (103). One end of the crank (3) is connected to the drive adjustment shaft (12), and the other end of the crank (3) is rotatably connected to the cylinder (4). A positioning frame (6) is provided on one side of the cylinder (4). The two ends of the pull rod (5) are connected to the positioning frame (6) and the crank (3) respectively, to lock the flap (1). A limit bracket (21) is installed on the inner side of the damper support (2). The limit bracket (21) has a V-shaped cross section. When the flap (1) blocks the passage between the air inlet (101) and the left chamber entrance (102), or blocks the passage between the air inlet (101) and the right chamber entrance (103), the upper end face of the limit bracket (21) abuts against the side wall of the flap (1). When the flap (1) abuts against the limit bracket (21) of the left damper support (2), it is used to block the passage between the air inlet (101) and the left chamber entrance (102). When the flap (1) abuts against the limit bracket (21) of the right damper support (2), it is used to block the passage between the air inlet (101) and the right chamber entrance (103). The pull rod (5) has a first connector (51) and a second connector (52) at its two ends respectively. The first connector (51) has a first mounting hole (511). The crank (3) has a second mounting hole for fixing the first connector (51) at one end away from the drive adjustment shaft (12). The second connector (52) has a waist-shaped hole (521). The pull rod (5) also has a handle (50) on one side. The positioning frame (6) has three fourth mounting holes (61) spaced apart. Each fourth mounting hole (61) has a U-shaped limiting groove (62) below it. The second connector (52) is connected to the fourth mounting hole (61) and the U-shaped limiting groove (62) by fasteners. The air inlet (101) is symmetrically provided with inclined first partitions (1010) on both sides, and the bottom of the left chamber inlet (102) and right chamber inlet (103) is symmetrically provided with inclined second partitions. A support shaft seat (11) is installed at the connection of the upper ends of the two second partitions, and the drive adjustment shaft (12) is installed on the support shaft seat (11).

Images