Nozzle structure of bag-type dust collector

Abstract

The utility model discloses a nozzle structure of a bag-type dust collector, which comprises an air blowing main pipe, an air blowing hole is arranged at the bottom of the air blowing main pipe, a lower limiting piece is fixed at the top of the air blowing main pipe, and the nozzle structure also comprises a mounting tension band arranged on the outer side of the air blowing main pipe; the mounting tension band comprises an open end at the bottom and a closed end at the top, the closed end is provided with an outer convex part, a containing area is formed in the outer convex part, and the upper limiting piece is arranged in the containing area; the nozzle pipe is connected to the blowing hole through a flexible pipe with a through hole inside; the nozzle pipe is connected to the entities on the two sides of the opening end through first threaded connecting pieces arranged on the two sides; according to the utility model, the effective position relationship between the mounting hoop and the main blowing pipe can be effectively prevented, the rotation of the mounting hoop and the main blowing pipe under pulsation vibration is avoided, the center deviation of the center hole of each nozzle and the center of a bag opening can be effectively ensured, the pulsation dust cleaning effect is effectively ensured and improved, and the bag opening is prevented from being damaged.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection equipment technology, and specifically relates to a nozzle structure for a bag filter dust collector. Background Technology

[0002] A baghouse dust collector is a dry dust filtration device suitable for collecting fine, dry, non-fibrous dust. The filter bags are made of woven filter cloth or non-woven felt, utilizing the filtration effect of the fibrous fabric to filter dust-laden gas. When the dust-laden gas enters the baghouse dust collector, larger, heavier dust particles settle due to gravity and fall into the ash hopper. Gas containing finer dust particles is purified as it passes through the filter media, as the dust is trapped.

[0003] However, as dust accumulates on the surface of the filter media, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference between the two sides of the filter media is large, some fine dust particles that have already adhered to the filter media will be squeezed through, causing the dust collector efficiency to decrease.

[0004] In industrial applications, most pulse jet baghouse dust collectors use a steel pipe with a row of small holes of 6-10mm in diameter at regular intervals. A short air-blowing pipe (i.e., a nozzle) is welded below the holes. During installation and use, the hollow hole of the nozzle is aligned with the center of the bag opening. The purpose is to ensure that the pulse airflow from the nozzle is correctly aligned with the center of the bag to guarantee the dust removal effect of the pulse jet. However, in reality, this fixed hole position process results in a large deviation of the holes, which significantly reduces the dust removal effect and may even cause damage to the bag opening.

[0005] To address this deficiency, application number 2023223036801 discloses a nozzle for a baghouse dust collector, comprising a main blowing pipe carrying gas at a specific pressure. The main blowing pipe includes a pipe body and blowing holes located below the pipe body, and includes a mounting element installed on the main blowing pipe. The mounting element includes a nearly circular annular body in the middle and straight plates at both ends arranged vertically, with an open end formed between the two straight plates. The annular body is used to fit over the main blowing pipe. A nozzle assembly is installed between the two straight plates. The nozzle assembly includes a spray pipe with a central hole, with both sides of the spray pipe connected to the straight plates respectively. A flexible tube with an inner hole connects the spray pipe and the blowing holes. The main body of the flexible tube is elastic. The blowing holes, the inner hole, and the central hole form an air delivery channel. The design of this utility model allows for rotational adjustment of the nozzle position, effectively ensuring the center deviation between the center hole of each nozzle and the center of the bag opening, effectively guaranteeing and improving the pulse cleaning effect, and preventing damage to the bag opening.

[0006] The solution has the following drawbacks: the outer surface of the blowing pipe is smooth. During use, the airflow inside the blowing pipe is pulsed gas and fluctuates. After a period of use, the installation element will swing, causing the center of the nozzle to deviate from the set center and damaging the side wall of the filter bag. Utility Model Content

[0007] The purpose of this invention is to provide a nozzle structure for a bag filter dust collector to solve the above-mentioned problems.

[0008] The technical solution adopted by this utility model is: a nozzle structure for a bag filter dust collector, including a blowing main pipe, an air blowing hole at the bottom of the blowing main pipe, and a lower limiting member fixed to the top of the blowing main pipe;

[0009] It also includes a mounting ring installed on the outside of the main air pipe;

[0010] The mounting ring includes an open end at the bottom and a closed end at the top. The closed end has an outward protrusion, and the interior of the outward protrusion forms a receiving area. The upper limiting member is disposed within the receiving area.

[0011] The air inlet is located at the open end, and the nozzle tube is connected to the air inlet through a flexible tube with an internal through hole;

[0012] The nozzle tube is connected to the solids on both sides of the opening end via first threaded connectors provided on both sides;

[0013] The lower limiting member includes an inner arc surface at the bottom that matches the outer wall of the air blowing tube and an outer ring of equally spaced teeth at the top;

[0014] The bottom of the upper limiting member is a concave portion, and an inner tooth that matches the outer tooth is provided in the concave portion;

[0015] The external teeth are locked in the internal teeth one-to-one.

[0016] Furthermore, the number of internal teeth is greater than the number of external teeth.

[0017] Furthermore, a second threaded connector is fixed to the top of the upper limiting member, and a through hole is opened in the outer protrusion. The second threaded connector is connected to the outside of the outer protrusion through the through hole.

[0018] This plan has the following beneficial effects:

[0019] This invention can effectively prevent the effective positional relationship between the mounting clamp and the main air blowing pipe, avoid the rotation of the two under pulsating vibration, effectively ensure the center hole of each nozzle and the center deviation of the bag opening, effectively guarantee and improve the pulse cleaning effect, and prevent the bag opening from being damaged. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the mounting ring structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the upper limiting component structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the lower limiting member structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation state of the lower limiting member of this utility model;

[0025] in:

[0026] 1- Install the clamp ring;

[0027] 2- Nozzle tube;

[0028] 3-First threaded connector;

[0029] 4-Flexible tube;

[0030] 5-Blowing main pipe;

[0031] 6-Lower limiting component;

[0032] 7-Upper limiting component;

[0033] 8-Second threaded connector;

[0034] 1a-Open end, 1b-Outward protrusion, 1c-Through hole, 1d-Receiving area;

[0035] 5a - Air outlet;

[0036] 6a - Inner arc surface, 6b - External teeth;

[0037] 7a - Internal teeth. Detailed Implementation

[0038] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0039] by Figure 1 This scheme is described in conjunction with other accompanying figures. Please refer to [the provided text]. Figure 1 A nozzle structure for a bag filter dust collector includes a main air blowing pipe 5, with an air blowing hole 5a at the bottom of the main air blowing pipe 5. Figure 5 (As can be seen), the lower limiting member 6 is welded to the top of the air blowing main pipe 5;

[0040] It also includes a mounting ring 1 installed on the outside of the air blowing pipe 5;

[0041] The mounting ring 1 includes an open end 1a at the bottom and a closed end at the top. As can be seen in the figure, there are downwardly extending solids on both sides of the open end 1a. The closed end has an outwardly protruding portion 1b, and the interior of the outwardly protruding portion 1b forms a receiving area 1d. The upper limiting member 7 is disposed within the receiving area 1d (see [reference]). Figure 1 and Figure 2 );

[0042] The air blowing hole 5a is located at the open end 1a, and the nozzle tube 2 is connected to the air blowing hole 5a through a flexible tube 4 with an internal through hole.

[0043] The nozzle tube 2 is connected to the solids on both sides of the opening end 1a via the first threaded connector 3 provided on both sides;

[0044] The lower limiting member 6 includes an inner arc surface 6a whose bottom conforms to the outer wall of the air tube 5 and an outer ring of equally spaced teeth 6b located at the top (see [link]). Figure 4 and Figure 5 );

[0045] The bottom of the upper limiting member 7 is a concave portion, and an internal tooth 7a that matches the external tooth is provided in the concave portion (please refer to...). Figure 3 );

[0046] The external tooth 6b is locked in the internal tooth 7a in a one-to-one correspondence.

[0047] During use, due to the action of the outer teeth 6b and the inner teeth 7a, the effective positional relationship between the mounting clamp and the main air blowing pipe can be effectively prevented, avoiding the rotation of the two under pulsating vibration. This can effectively ensure the center deviation between the center hole of each nozzle and the center of the bag opening, effectively guaranteeing and improving the pulse cleaning effect and preventing damage to the bag opening.

[0048] To allow for adjustment, the number of internal teeth 7a is greater than the number of external teeth 6b. When adjustment is needed, the upper limiting part 7 can be rotated to achieve a certain angle adjustment to adapt to the adjustment nozzle tube 2 being aligned with the center of the bag as much as possible.

[0049] Please refer to Figure 3 Due to the limited space in the accommodating area 1d and to reduce installation difficulty, a second threaded connector 8 is welded to the top of the upper limiting member 7, and a through hole 1c is opened in the outer protrusion 1b. The second threaded connector 8 is connected to the outside of the outer protrusion 1b through the through hole 1c.

[0050] When installing the upper limiting component 7, unscrew the nut of the second threaded connector 8, pass the bolt through the through hole 1c from bottom to top, and then tighten the nut to fix it.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nozzle structure for a bag filter dust collector, characterized in that, It includes an air blowing tube, the bottom of which is provided with an air blowing hole, and a lower limiting member is fixed to the top of the air blowing tube; It also includes a mounting ring installed on the outside of the main air pipe; The mounting ring includes an open end at the bottom and a closed end at the top. The closed end has an outward protrusion, and the interior of the outward protrusion forms a receiving area. The upper limiting member is disposed within the receiving area. The air inlet is located at the open end, and the nozzle tube is connected to the air inlet through a flexible tube with an internal through hole; The nozzle tube is connected to the solids on both sides of the opening end via first threaded connectors provided on both sides; The lower limiting member includes an inner arc surface at the bottom that matches the outer wall of the air blowing tube and an outer ring of equally spaced teeth at the top; The bottom of the upper limiting member is a concave portion, and an inner tooth that matches the outer tooth is provided in the concave portion; The external teeth are locked in the internal teeth one-to-one.

2. The nozzle structure of a bag filter as described in claim 1, characterized in that, The number of internal teeth is greater than the number of external teeth.

3. The nozzle structure of a bag filter as described in claim 2, characterized in that, The top of the upper limiting member is fixed with a second threaded connector, and the outer protrusion has a through hole. The second threaded connector is connected to the outside of the outer protrusion through the through hole.

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