Nitrogen filtering device for laser welding machine

Abstract

The utility model relates to the technical field of nitrogen preparation, in particular to a nitrogen filtering device for a laser welding machine. The upper sealing head and the lower sealing head are fixedly connected with the cylinder body; the upper sealing head is connected with an air inlet pipe, and the lower sealing head is connected with an exhaust pipe; the exhaust pipe is communicated with a dosing cylinder, and the cylinder body is fixedly connected with a reverse blowing pipe; a fixing plate is fixedly connected to the upper sealing head, a mounting ring is fixedly connected to the lower surface of the fixing plate, a cloth bag is detachably connected to the mounting ring, a first via hole is formed in the fixing plate, a mounting plate is arranged at the position, close to the lower sealing head, of the barrel, and a rotating part is rotationally mounted on the mounting plate. According to the utility model, when entering the cylinder body through the air inlet pipe, air firstly passes through the first via hole, then enters the cloth bag, and is exhausted from the exhaust pipe after being subjected to dust removal by the cloth bag; when the blowback pipe blows air, the rotating piece is driven to rotate, the rotating eccentric hole can drive the cloth bag to swing, and dust attached to the inner surface of the cloth bag is shaken off and gathered at the bottom of the cloth bag.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen gas preparation technical field, concretely relates to a nitrogen gas filtering device for laser welding machine. BACKGROUND

[0002] Nitrogen gas is the protective gas when laser welding, and the nitrogen-rich environment at the laser welding machine after use is more conducive to the recovery and preparation of nitrogen gas.

[0003] The Chinese patent with the application number 202410303507.8 discloses a recovery process and system for nitrogen gas, which comprises: S1: the backflow nitrogen gas used by the low-pressure nitrogen gas using equipment passes through the nitrogen gas treatment module through the low-pressure gas return pipe group, removes particulate matter through the nitrogen gas treatment module, S3: after the nitrogen gas treatment module operates for a period of time, the nitrogen gas in the low-pressure gas return pipeline and the high-pressure gas return pipeline is pressurized in the energy storage pressure boosting mechanism; the integrated nitrogen gas treatment module can use the impact force of the pressurized nitrogen gas to ensure the cleanliness of the filter plate, reduce the wind pressure loss, and the stroke length of the high-stroke low-temperature difference heat exchanger is increased, which is conducive to adjusting the wind pressure loss by using the pipeline length, ensuring that the pressure of the mixed nitrogen gas entering the low-pressure nitrogen gas using equipment meets the use requirements of the low-pressure nitrogen gas using equipment, and using long-stroke natural adjustment of wind pressure can meet the low-pressure nitrogen gas use requirements, simplifying the system and reducing the installation space requirement of the integrated system.

[0004] However, the laser welding machine generates welding fume during use, and the existing equipment increases the air induction mechanism at the laser welding machine to suck away the air, causing waste of energy and resources.

[0005] The Chinese patent with the application number 202410303507.8 removes particulate matter through the nitrogen gas treatment module, but the nitrogen gas treatment module has a complex structure.

[0006] There is a lack of a pre-filtering device for nitrogen gas recovery and reuse of the laser welding machine on the market.

[0007] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. UTILITY MODEL CONTENT

[0008] The utility model aims at providing a nitrogen gas filtering device for laser welding machine which can effectively solve the above-mentioned technical problems.

[0009] In order to achieve the purpose of the utility model, the following technical solutions are adopted:

[0010] The utility model provides a nitrogen filtering device for laser welding machine, it includes: cylinder, with the fixed connection of cylinder's upper head, lower head, the upper head is connected with the air inlet pipe, the lower head is connected with the exhaust pipe, the fixed connection of the cylinder is fixedly connected with the back flushing pipe, the fixed plate is fixedly connected on the upper head, the lower surface of fixed plate is fixedly connected with the mounting ring, the cloth bag is detachably connected on the mounting ring, the first through -hole is seted up on the fixed plate, the mounting plate is equipped with on the cylinder near the lower head, the second through -hole is seted up on the mounting plate, rotates and is installed the rotating part on the mounting plate.

[0011] Further, the rotating part includes an installation portion, a rotating portion, and an agitating portion.

[0012] Further, the installation portion is rotatably connected with the mounting plate.

[0013] Further, the rotating portion is integrally connected with the installation portion, and the rotating portion is composed of a plurality of fins.

[0014] Further, the fin is in the shape of a water droplet in cross section.

[0015] Further, the agitating portion is a circular plate with an eccentric hole, the circular plate is fixedly connected with the fin, and the cloth bag passes through the eccentric hole.

[0016] Further, the fixed plate is provided with a conical flow guide block.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] When the gas enters the cylinder through the air inlet pipe, it first passes through the first through -hole and then enters the cloth bag, and after dust removal by the cloth bag, the gas is discharged from the exhaust pipe; when the back flushing pipe blows air, the rotating part is driven to rotate, the eccentric hole of the rotating part drives the cloth bag to swing, and the dust attached to the inner surface of the cloth bag is shaken off and gathered at the bottom of the cloth bag. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0020] Figure 1 It is the schematic view of the nitrogen filtering device for laser welding machine of the utility model.

[0021] Figure 2 It is the sectional view of the nitrogen filtering device for laser welding machine of the utility model.

[0022] Figure 3 It is Figure 2An enlarged schematic view of the middle A part.

[0023] Figure 4 A rotating part schematic view of the nitrogen filtering device for the laser welding machine.

[0024] Figure 5 For Figure 4 An enlarged schematic view of the middle B part.

[0025] In the figure: 1, cylinder body; 2, upper head; 3, lower head; 4, dosing cylinder; 5, back flushing pipe; 6, fixed plate; 7, mounting ring; 8, first via hole; 9, support block; 10, flow guide block; 11, mounting plate; 12, second via hole; 13, stud; 14, rotating part; 15, bearing; 141, mounting part; 142, rotating part; 143, stirring part. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the technical scheme in the embodiments of the utility model for clear and complete description, obviously, the described embodiments are part of the embodiments of the utility model, not all embodiments.

[0027] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the protection scope of the utility model. When a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used in this paper are only for the purpose of illustration.

[0028] As Figures 1 to 5As shown, the utility model laser welding machine nitrogen filter device, include: cylinder 1, through the flange and cylinder 1 fixed connection's upper head 2, lower head 3, the upper head 2 is connected with the air inlet pipe, the lower head 3 is connected with the exhaust pipe, the exhaust pipe is communicated with the dosing barrel 4, the cylinder 1 is fixedly connected with the backflush pipe 5, the upper head 2 is fixedly connected with the fixed plate 6, the lower surface of fixed plate 6 is fixedly connected with the mounting ring 7, the mounting ring 7 is detachably connected with cloth bag.

[0029] The cloth bag is preliminarily dedusted, and the cloth bag is detachably mounted on the mounting ring 7 through a hoop. The cloth bag can be made of polyester or polypropylene. Since the cloth bag is a common product, no further description is provided herein.

[0030] The fixed plate 6 serves as a fixed support. When the cloth bag needs to be replaced, the upper head 2 can be disassembled to replace the cloth bag. Therefore, the first through hole 8 is formed in the fixed plate 6. When the gas enters the cylinder 1 through the air inlet pipe, it first passes through the first through hole 8 and then enters the cloth bag. After dedusting, the gas is discharged from the exhaust pipe.

[0031] It should be noted that the fixed plate 6 is fixedly provided with a support block 9, the support block 9 is provided with a tapered flow guide block 10, and an elastic pad such as a rubber pad is arranged between the support block 9 and the flow guide block 10. That is, the rubber pad is bonded between the flow guide block 10 and the support block 9, which can serve as a buffer.

[0032] The gas blows to the flow guide block 10 through the air inlet pipe, blows to the first through hole 8 along the side surface of the flow guide block 10, avoids directly colliding on the cloth bag, and can serve as a buffer to protect the cloth bag.

[0033] The mounting plate 11 is arranged on the cylinder 1 close to the lower head 3, the mounting plate 11 is fixedly connected with the cylinder 1, the second through hole 12 is formed in the mounting plate 11, and the threaded stud 13 is fixedly arranged on the mounting plate 11. The rotating member 14 is rotatably arranged on the threaded stud 13. The gas in the backflush pipe 5 blows to the rotating member 14 to drive the cloth bag to swing and dedust the cloth bag.

[0034] Further, the middle of the threaded stud 13 is not provided with a thread, the inner ring of the bearing 15 is in contact with the middle segment of the threaded stud 13, the threaded stud 13 is threadedly connected with a nut, and the nut presses the inner ring of the bearing 15. The rotating member 14 includes a mounting portion 141, a rotating portion 142, and an agitating portion 143. The mounting portion 141 is rotatably connected with the threaded stud 13, that is, the mounting portion 141 is fixedly connected with the outer ring of the bearing 15. The bearing 15 can enable the rotating member 14 to stably rotate.

[0035] The rotating part 142 is integrally connected with the mounting part 141, and the mounting part 141 is a radial rod part and a fixed ring fixed on the rod part; the rotating part 142 is composed of a plurality of fins, the cross section of the fin is drop-shaped, that is, the fin has an inclined surface relative to the blowing direction of the back blowing pipe 5, and when the back blowing pipe 5 blows, the rotating part 14 is driven to rotate.

[0036] Here, it needs to be explained in detail that since the length-diameter ratio of the barrel 1 is large, the air flow rate can be effectively slowed down, so that the mixing effect of the dosing barrel 4 is good, but the longer length is not conducive to air circulation, therefore, the back blowing pipe 5 is arranged on the barrel 1, so that the air flow in the barrel 1 is better, and on the other hand, the rotating part 14 is driven to rotate.

[0037] It needs to be supplemented that the dosing barrel 4 is only used to add some chemical agents, and is commonly used for deodorization after welding of specific materials, and of course, the dosing barrel 4 can not be arranged.

[0038] The source of the gas of the back blowing pipe 5 can be the filtered gas of the application, so that part of the gas is backflowed.

[0039] The stirring part 143 is a circular plate with an eccentric hole, the circular plate is fixedly connected with the fin, the cloth bag passes through the eccentric hole, when the fin rotates, the circular plate is driven to rotate, the eccentric hole rotates and drives the cloth bag to swing, dust attached to the inner surface of the cloth bag is shaken off and gathered at the bottom of the cloth bag, the upper end cover 2 is disassembled, the clamp is disassembled, the dust is poured out, and then the cloth bag is installed, so that the cloth bag can be used repeatedly.

[0040] Working principle:

[0041] When the gas enters the barrel 1 through the air inlet pipe, the gas first passes through the first through hole 8 and then enters the cloth bag, and the dust in the cloth bag is removed, and then the gas is discharged from the air outlet pipe; when the back blowing pipe 5 blows, the rotating part 14 is driven to rotate, the eccentric hole rotates and drives the cloth bag to swing, and dust attached to the inner surface of the cloth bag is shaken off and gathered at the bottom of the cloth bag.

[0042] The standard parts used in the application can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and the details are not described here, and the contents not described in detail in the description belong to the prior art known to those skilled in the art.

[0043] It should be understood that modifications or variations can be made according to the above description by those of ordinary skill in the art, and all such modifications and variations are intended to be within the scope of the present application as defined by the claims appended hereto.

Claims

1. A nitrogen filtering device for a laser welding machine, characterized by: The utility model relates to a cloth bag dust collector, including: A cylinder body, an upper head and a lower head fixedly connected with the cylinder body, an air inlet pipe connected with the upper head, an air outlet pipe connected with the lower head, a back flushing pipe fixedly connected with the cylinder body, a fixed plate fixedly connected with the upper head, a mounting ring fixedly connected with the lower surface of the fixed plate, a cloth bag detachably connected with the mounting ring, a first through hole formed in the fixed plate, an installation plate provided close to the lower head of the cylinder body, a second through hole formed in the installation plate, and a rotating member rotatably installed on the installation plate. The rotating member comprises an installation portion, a rotating portion and an agitating portion.

2. The nitrogen filtering device for a laser welder according to claim 1, characterized by: The installation portion is rotatably connected with the installation plate.

3. The nitrogen filtering device for a laser welder according to claim 2, characterized by: The rotating portion is integrally connected with the installation portion, and the rotating portion is composed of multiple fins.

4. The nitrogen filtering device for a laser welder according to claim 3, characterized by: The fin cross section is in the shape of a water drop.

5. The nitrogen filtering device for a laser welder according to claim 4, characterized by: The agitating portion is a circular plate with an eccentric hole, the circular plate is fixedly connected with the fin, and the cloth bag passes through the eccentric hole.

6. The nitrogen filtering device for a laser welder according to claim 5, wherein: A conical flow guide block is installed on the fixed plate.

7. The nitrogen filtering device for a laser welder according to claim 6, characterized by: ​

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