Smoke evacuation device for welding

Abstract

The utility model discloses a welding is with exhaust device relates to the exhaust field, especially a welding is with exhaust device, through setting up the negative pressure flue, sets up the air extraction mechanism in the negative pressure flue, makes its inside produce the negative pressure, the communication setting of convergence pipe is on the negative pressure flue, the communication universal bamboo knot pipe is on the convergence pipe, and the universal bamboo knot pipe is set up one to one with convergence pipe, and is located respectively in each welding station, utilizes the characteristic that universal bamboo knot pipe multidirectional free adjustment and self -shaping, when welding, the air inlet of universal bamboo knot pipe is aimed at the welding position, realizes the simultaneous exhaust of multi -station in the welding operation room, and can aim at any welding position, thereby the flue gas that produces when welding can be discharged in time.

Description

Technical Field

[0001] This utility model relates to the field of fume extraction, and in particular to a fume extraction device for welding. Background Technology

[0002] Welding fumes are gases and dust produced during the high-temperature combustion of welding rods when they come into contact with the workpiece during electric welding. These fumes contain manganese dioxide, nitrogen oxides, fluorides, ozone, etc., which float in the air and are harmful to the human body. When people inhale these fumes, they may experience dizziness, headache, cough, chest tightness and shortness of breath. In severe cases, they may lead to smoke poisoning or pneumoconiosis.

[0003] Traditionally, welding fumes have been treated by installing exhaust fans or axial flow fans to ventilate the welding area and dilute the concentration, or by using a system similar to a range hood to exhaust the fumes. However, since the location of the fumes at the welding station is close to the welders, and the welding position is not fixed, the above methods cannot effectively remove the welding fumes in a timely manner. As a result, operators still inhale a large amount of fumes during the welding process. Therefore, providing a welding fume extraction device that can effectively remove the fumes generated at the welding station is an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a welding fume extraction device to solve the problems existing in the prior art, which can promptly exhaust the fumes generated at the welding station.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a welding fume exhaust device, including a negative pressure flue, a manifold, and a universal bamboo joint pipe;

[0007] The negative pressure flue is connected to an air extraction mechanism;

[0008] The manifold is provided in multiple ways, with one end connected to the negative pressure flue and the other end connected to the universal bamboo joint pipe;

[0009] The universal bamboo joint tube is provided in a one-to-one correspondence with the manifold. The exhaust port of each universal bamboo joint tube is connected to the corresponding manifold, and its air inlet can be freely adjusted to face the welding station for collecting welding fumes.

[0010] Furthermore, the manifold is equipped with a damper assembly for controlling the air intake at the air inlet of the universal bamboo tube.

[0011] Furthermore, the air inlet of the universal bamboo-joint tube is connected to an air collection hood.

[0012] Furthermore, a smoke sensor is provided at the air inlet of the universal bamboo tube;

[0013] The damper assembly includes an electric damper or a pneumatic damper;

[0014] The smoke sensor is used to monitor the concentration of smoke and is electrically connected to the damper assembly.

[0015] Furthermore, the smoke sensor is electrically connected to the suction mechanism.

[0016] Furthermore, the damper assembly is electrically connected to the air extraction mechanism.

[0017] Furthermore, a pressure sensor is installed inside the negative pressure flue to monitor the negative pressure value inside the negative pressure flue;

[0018] The pressure sensor is electrically connected to the air extraction mechanism.

[0019] Furthermore, the damper assembly is detachably connected to the manifold via a sleeve.

[0020] Furthermore, the sleeve and the manifold are detachably connected by a clamp.

[0021] Furthermore, the hoop is fixedly connected to the welding station.

[0022] The present invention achieves the following technical advantages over the prior art:

[0023] This utility model discloses a welding fume exhaust device. By setting up a negative pressure flue and installing an air extraction mechanism inside the negative pressure flue to generate negative pressure, a manifold is connected to the negative pressure flue, and a universal bamboo joint tube is connected to the manifold. The universal bamboo joint tube is set one-to-one with the manifold and is located at each welding station. Utilizing the multi-directional free adjustment and self-shaping characteristics of the universal bamboo joint tube, during welding, the air inlet of the universal bamboo joint tube is aligned with the welding position, realizing simultaneous fume exhaust from multiple stations in the welding operation room. It can be aligned with any welding position, so that the fumes generated during welding can be discharged in a timely manner. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the smoke exhaust device disclosed in this utility model;

[0026] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0027] Figure 3 This is a schematic diagram of the structure of the damper assembly disclosed in this utility model;

[0028] Figure 4 This is an exploded structural diagram of the damper assembly disclosed in this utility model.

[0029] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0030] Among them, 1. Negative pressure flue; 2. Manifold; 3. Universal bamboo joint pipe; 4. Damper assembly; 41. Connecting pipe; 42. Center frame; 43. Door leaf; 431. Rotating shaft; 432. Slip ring; 44. Drive ring; 441. Drive rod; 442. Handle; 45. Pulley; 46. Sleeve; 5. Hoop; 51. Bolt and lock nut. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The purpose of this invention is to provide a welding fume extraction device to solve the problems existing in the prior art, which can promptly remove the fumes generated at the welding station.

[0033] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] The universal bamboo joint tube mentioned in this embodiment of the utility model is a flexible pipe assembly specifically designed for smoking devices. It can achieve autonomous universal positioning without the need for external supports, making it easy to install and adjust.

[0035] like Figure 1As shown, this utility model provides a welding fume extraction device, including a negative pressure flue 1, a manifold 2, and a universal bamboo joint pipe 3; wherein the negative pressure flue 1 is connected to an air extraction mechanism, which generates negative pressure in the negative pressure flue 1; wherein multiple manifold pipes 2 are provided, one end of the manifold pipe 2 is connected to the negative pressure flue 1, and the other end is connected to the universal bamboo joint pipe 3, the number and position of the universal bamboo joint pipes 3 correspond one-to-one with the manifold pipes 2, the exhaust port of each universal bamboo joint pipe 3 is connected to the corresponding manifold pipe 2, and its air inlet can be freely adjusted to face the welding station, for collecting the fume at the welding station.

[0036] By employing a negative pressure flue 1 with an extraction mechanism inside, negative pressure is created within it. A manifold 2 is connected to the negative pressure flue 1, and a universal bamboo-joint tube 3 is connected to the manifold 1. The universal bamboo-joint tube 3 is installed one-to-one with the manifold 2 and located at each welding station. Utilizing the multi-directional adjustable and self-shaping characteristics of the universal bamboo-joint tube 3, the air inlet of the universal bamboo-joint tube 3 is aligned with the welding position during welding. This enables simultaneous smoke exhaust from multiple stations within the welding operation room, and the tube can be aligned with any welding position, ensuring timely discharge of the fumes generated during welding.

[0037] As an example of an implementable approach, such as Figures 1 to 3 As shown, a damper assembly 4 is provided on the manifold 2. The damper assembly 4 can change the air intake flow area, thereby controlling the air intake volume at the air intake of the universal bamboo joint pipe 3.

[0038] As an example of implementation, a gas collection hood is connected to the air inlet of the universal bamboo joint tube 3. The gas collection hood covers the welding position and can effectively prevent the flue gas from escaping and spreading.

[0039] As an example of implementation, a smoke sensor is provided at the air inlet of the universal bamboo tube 3, and the door assembly includes an electric damper or a pneumatic damper. The smoke sensor is used to monitor the concentration of smoke and is electrically connected to the damper assembly 4. When the smoke sensor detects that the smoke concentration is high, it transmits an electrical signal to the damper assembly 4, and the damper assembly 4 increases the air intake flow area to discharge the smoke in a timely manner.

[0040] As an example of implementation, the smoke sensor can also be electrically connected to the extraction mechanism. When the smoke sensor detects a high concentration of smoke, it transmits an electrical signal to the extraction mechanism, which increases the negative pressure in the negative pressure flue 1, thereby generating greater suction at the air inlet of the universal bamboo joint tube 3 to expel the smoke in time.

[0041] As an example of implementation, the damper assembly 4 can also be electrically connected to the extraction mechanism. When the damper assembly 4 expands the air intake area, it transmits an electrical signal to the extraction mechanism, which increases the extraction power to ensure that the negative pressure does not decrease and allows the flue gas to be discharged smoothly.

[0042] As an example of implementation, a pressure sensor can also be installed in the negative pressure flue 1 to monitor the negative pressure value in the negative pressure flue 1. The pressure sensor is electrically connected to the suction mechanism, so that the suction mechanism adjusts the corresponding power according to the pressure in the negative pressure flue 1 to ensure that there is a stable negative pressure in the negative pressure flue 1, so that the flue gas can be discharged smoothly, while saving energy consumption.

[0043] As an example of an implementable approach, such as Figure 2 As shown, the damper assembly 4 is detachably connected to the manifold 2 via a sleeve 46. The sleeve 46 and the manifold 2 can be connected by means of a clamp 5 or a threaded connection. The attached figure shows the clamp 5 as an example. The clamp 5 is fixedly connected to the welding station and wraps around the outside of the sleeve 46. One end of the clamp 5 is a fixed end, and the other end is a movable end. The movable end is locked by a bolt and a lock nut 51, thereby fastening the clamp 5 to the sleeve 46 and firmly fixing the sleeve 46 to the manifold 2. The detachable connection method facilitates the maintenance and replacement of the damper assembly 4.

[0044] As an example of an implementable approach, such as Figures 2 to 4 As shown, the damper assembly 4 also includes a connecting pipe 41 fixedly installed at the end of the sleeve 46 away from the manifold 2, a central frame 42 fixedly connected to the center of the inner side of the connecting pipe 41, several door panels 43 rotatably installed on the side of the central frame 42 in a circular array, and a drive ring 44 fitted outside the connecting pipe 41 to drive the door panels 43 to rotate and adjust the size of the air vent. The size of the air vent is adjusted by rotating the door panels 43, thereby adjusting the smoke exhaust intensity. Specifically, when the amount of welding fumes increases, the drive ring 44 is rotated by external operation. The drive ring 44 then drives the several door panels 43 connected to it to rotate. The rotation of the door panels 43 changes the degree of overlap between them, thereby adjusting the size of the opening between the connecting pipe 41 and the external environment, i.e., the size of the air vent. When the air vent is enlarged, the smoke exhaust intensity increases, and welding fumes can be absorbed and discharged more effectively. Conversely, when the air vent is reduced, the smoke exhaust intensity decreases, which is suitable for situations with a small amount of fumes.

[0045] As an example of an implementable approach, such as Figure 5As shown, a rotating shaft 431, which is rotatably connected to the connecting pipe 41, is fixedly connected to the end of the door leaf 43 away from the central frame 42. The end of the rotating shaft 431 extends to the outside of the connecting pipe 41 and is fixedly connected to a slip ring 432. A drive rod 441, which passes through the slip ring 432 and is slidably connected to the side of the drive ring 44, is fixedly connected to the side of the drive ring 44. When it is necessary to adjust the size of the air vent, the drive rod 441 slides in the slip ring 432 by rotating the drive ring 44, so that the slip ring 432 rotates around the rotating shaft 431, thereby driving the rotating shaft 431 and the door leaf 43 to rotate. Since all the door leaves 43 are connected to the drive ring 44 in a similar way, when the drive ring 44 rotates, all the door leaves 43 will change their tilt angle synchronously, thereby collectively adjusting the size of the air vent. It should be noted that the side of the connecting pipe 41 has at least three pulleys 45 arranged in a ring array to support the drive ring 44; when the drive ring 44 is rotated to adjust the tilt angle of the door leaf 43, the pulleys 45 can reduce the friction between the drive ring 44 and the connecting pipe 41, making the rotation of the drive ring 44 smoother and more stable.

[0046] The drive ring 44 has a handle 442 fixedly connected to its side; the drive ring 44 can be manually rotated by applying force to the handle 442.

[0047] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fume extraction device for welding, characterized in that, Includes negative pressure flue, manifold, and universal bamboo joint pipe; The negative pressure flue is connected to an air extraction mechanism; The manifold is provided in multiple ways, with one end connected to the negative pressure flue and the other end connected to the universal bamboo joint pipe; The universal bamboo joint tube is provided in a one-to-one correspondence with the manifold. The exhaust port of each universal bamboo joint tube is connected to the corresponding manifold, and its air inlet can be freely adjusted to face the welding station for collecting welding fumes.

2. The welding fume extraction device according to claim 1, characterized in that, The manifold is equipped with a damper assembly for controlling the air intake at the air inlet of the universal bamboo tube.

3. The welding fume extraction device according to claim 1, characterized in that, The air inlet of the universal bamboo-joint tube is connected to an air collection hood.

4. The welding fume extraction device according to claim 2, characterized in that, A smoke sensor is installed at the air inlet of the universal bamboo tube; The damper assembly includes an electric damper or a pneumatic damper; The smoke sensor is used to monitor the concentration of smoke and is electrically connected to the damper assembly.

5. The welding fume extraction device according to claim 4, characterized in that, The smoke sensor is electrically connected to the suction mechanism.

6. The welding fume extraction device according to claim 4, characterized in that, The damper assembly is electrically connected to the air extraction mechanism.

7. The welding fume extraction device according to claim 4, characterized in that, A pressure sensor is installed inside the negative pressure flue to monitor the negative pressure value inside the negative pressure flue; The pressure sensor is electrically connected to the air extraction mechanism.

8. The welding fume extraction device according to claim 2, characterized in that, The damper assembly is detachably connected to the manifold via a sleeve.

9. The welding fume extraction device according to claim 8, characterized in that, The sleeve and the manifold are detachably connected by a clamp.

10. The welding fume extraction device according to claim 9, characterized in that, The hoop is fixedly connected to the welding station.

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