Air interchanger of metal plate welding and polishing workshop

Abstract

The utility model provides an air interchanger of a metal plate welding and polishing workshop. The technical problem that the suction effect of an existing ventilation device is not satisfactory is solved. According to the technical scheme, the air interchanger of the metal plate welding and grinding workshop comprises a centrifugal fan, a filtering mechanism and a collecting box; the filtering mechanism is communicated with an air inlet of the centrifugal fan so as to intercept solid impurities in airflow; the collecting box contains the filtering mechanism so as to collect the solid impurities intercepted by the filtering mechanism; the collecting box is communicated with an air inlet of the centrifugal fan through the filtering mechanism; the bottom of the collecting box is provided with a slag discharge port and is matched with a first valve; the side wall of the collecting box is provided with a plurality of air inlet connectors used for installing corrugated telescopic pipes, and the air inlet connectors are provided with second valves. The end, away from the air inlet connector, of the corrugated telescopic pipe forms a suction opening. According to the utility model, the position of the suction port can be flexibly adjusted, and a better suction effect and a better purification effect are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a ventilation device for a metal plate welding and grinding workshop. Background Art

[0002] When welding, grinding and other processing operations are performed on metal plates, a large amount of debris and smoke will be generated. These debris and smoke will not only pollute the workshop, but also irritate the respiratory tract of the workers and endanger their health. Therefore, metal plate welding and grinding workshops usually install ventilation devices to purify the workshop environment.

[0003] Ventilation devices all ventilate by suction. The farther away from the suction port, the worse the suction effect, and accordingly, the worse the purification effect. However, the suction port positions of existing ventilation devices are mostly rigid and fixed, and cannot be flexibly adjusted according to actual conditions, which results in unsatisfactory suction and purification effects. Summary of the invention

[0004] The utility model aims to provide a ventilation device for a metal plate welding and grinding workshop, the position of the suction port of which can be flexibly adjusted, and has better suction and purification effects.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] Ventilation device for metal plate welding and grinding workshop, including:

[0007] Centrifugal fan;

[0008] A filtering mechanism connected to the air inlet of the centrifugal fan to intercept solid impurities in the air flow;

[0009] a collecting box, which accommodates the filtering mechanism to collect solid impurities intercepted by the filtering mechanism;

[0010] Among them, the collecting box is connected with the air inlet of the centrifugal fan through the filtering mechanism; the bottom of the collecting box is provided with a slag discharge port and is adapted to a first valve; the side wall of the collecting box is provided with a plurality of air inlet interfaces for installing a corrugated telescopic tube, and the air inlet interface is provided with a second valve; the end of the corrugated telescopic tube away from the air inlet interface constitutes a suction port.

[0011] Optionally, the filtering mechanism includes: a cartridge frame and a filter cloth covering the outer periphery of the cartridge frame; the cartridge frame has radial through holes for air flow to pass through; the front end of the cartridge frame is connected to a collection box, and the rear end of the cartridge frame is connected to an air inlet of a centrifugal fan.

[0012] Optionally, a first interface is provided on the front wall of the collection box; the front end of the first interface is connected to the air compressor, and the rear end of the first interface is connected to the front end of the cartridge rack; the first interface is provided with a first pulse valve.

[0013] Optionally, the filtering mechanism and the first interface are provided in plurality respectively; the filtering mechanism corresponds to the first interface one by one.

[0014] Optionally, the front end of each of the first interfaces is connected to the same shunt pipe, and is connected to the air compressor through the shunt pipe.

[0015] Optionally, the rear ends of the cartridge racks of the filter mechanisms are connected to the same confluence chamber, and are connected to the air inlet of the centrifugal fan through the confluence chamber.

[0016] Optionally, the front wall of the confluence chamber is provided with a plurality of second interfaces; the second interfaces correspond one-to-one to the cartridge racks and are rotationally connected via a second sealed bearing; the first interfaces are rotationally connected to the corresponding cartridge racks via a first sealed bearing.

[0017] Optionally, an impeller is installed in the cartridge frame to drive the cartridge frame to rotate when air flows through.

[0018] Optionally, the cartridge rack comprises two interlocking half racks; the two half racks of the cartridge rack are correspondingly provided with connecting parts, and are connected by bolts installed on the connecting parts.

[0019] Optionally, the impeller is provided with a limiting portion; and the two half frames of the drum frame are provided with limiting grooves on opposite surfaces to form a limiting fit with the limiting portion of the impeller when buckled.

[0020] The working principle of the utility model is as follows: turn on the suction fan, and the workshop can be sucked and ventilated through the suction port of the bellows. The bellows can be bent at will, and can be stretched or shrunk, and the position of the suction port can be flexibly adjusted according to actual conditions, so as to achieve better suction and purification effects. The filtering mechanism can intercept solid impurities in the airflow, thereby protecting the blades of the centrifugal fan. The intercepted solid impurities will gradually accumulate in the collection box. Turn off the suction fan, put a thick cloth bag on the slag discharge port, and open the first valve to discharge the solid impurities in the collection box. The air outlet of the suction fan can be connected to the downstream flue gas purification device through a pipeline to further purify the sucked airflow.

[0021] It can be seen that the beneficial effect of the utility model is that the position of the suction port can be flexibly adjusted to achieve better suction and purification effects. In addition, when cleaning a workshop, the user can carry the bellows telescopic tube and walk around the workshop, and use it as a vacuum cleaner. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0024] Figure 2 It is a schematic diagram of a filtering mechanism arranged in a collection box;

[0025] Figure 3 It is a schematic diagram of the structure of the collection box;

[0026] Figure 4 for Figure 3 Schematic diagram from another angle;

[0027] Figure 5 This is a schematic diagram of the assembly of the drum rack.

[0028] Figure numerals: 1. centrifugal fan; 2. filtering mechanism; 3. collecting box; 4. slag discharge port; 5. air inlet interface; 6. drum rack; 7. filter cloth; 8. first interface; 9. first pulse valve; 10. shunt pipe; 11. confluence chamber; 12. second interface; 13. first sealed bearing; 14. second sealed bearing; 15. impeller; 16. half rack; 17. connecting part; 18. limiting part; 19. limiting groove. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0034] The following is combined with Figure 1 ~Attached Figure 5 The embodiments of the present utility model are described in detail.

[0035] The embodiment of the utility model provides a ventilation device for a metal plate welding and grinding workshop. The ventilation device includes: a centrifugal fan 1, a filter mechanism 2, and a collection box 3. The filter mechanism 2 is connected to the air inlet of the centrifugal fan 1 to intercept solid impurities in the airflow. It should be understood that the solid impurities here mainly refer to the parts of the grinding debris that are easily raised. The collection box 3 accommodates the filter mechanism 2 to collect the solid impurities intercepted by the filter mechanism 2. The collection box 3 is connected to the air inlet of the centrifugal fan 1 through the filter mechanism 2. The bottom of the collection box 3 is provided with a slag discharge port 4, and is adapted to a first valve. The side wall of the collection box 3 is provided with a plurality of air inlet interfaces 5 for installing a bellows expansion tube, and the air inlet interface 5 is provided with a second valve. It should be understood that when part of the bellows expansion tube is in an idle state, the second valve corresponding to this part of the bellows expansion tube can be closed to improve the suction effect of other bellows expansion tubes. The end of the bellows expansion tube away from the air inlet interface 5 constitutes a suction port. It should be understood that the bellows expansion pipe itself is a prior art and has been put into use in other fields, such as: the drain pipe of a washing machine, the drain pipe of a kitchen sink, etc.; the structure and principle of the bellows expansion pipe will not be described in detail here.

[0036] The specific implementation of the utility model is described below: Turn on the suction fan, and the workshop can be sucked and ventilated through the suction port of the bellows. The bellows can be bent at will, and can be stretched or contracted, and the position of the suction port can be flexibly adjusted according to actual conditions, so as to achieve better suction and purification effects. The filter mechanism 2 can intercept solid impurities in the airflow, thereby protecting the blades of the centrifugal fan 1. The intercepted solid impurities will gradually accumulate in the collection box 3. Turn off the suction fan, put a thick bag on the slag discharge port 4, and open the first valve to discharge the solid impurities in the collection box 3. The air outlet of the suction fan can be connected to the downstream flue gas purification device through a pipeline to further purify the sucked airflow. The utility model can flexibly adjust the position of the suction port, so as to achieve better suction and purification effects. In addition, when cleaning the workshop, you can walk in the workshop with the corrugated telescopic tube, and use it as a vacuum cleaner.

[0037] Furthermore, the filtering mechanism 2 includes: a drum frame 6, a filter cloth 7 covering the outer periphery of the drum frame 6; the drum frame 6 has radial through holes for airflow to pass through; the front end of the drum frame 6 is connected to the collection box 3, and the rear end of the drum frame 6 is connected to the air inlet of the centrifugal fan 1. It should be understood that the airflow entering the collection box 3 enters the inner side of the drum frame 6 through the filter cloth 7 and the radial through holes, and then flows into the centrifugal fan 1 through the rear end of the drum frame 6. The drum frame 6 is provided with a plurality of radial through holes. The filter cloth 7 is usually arranged in a cylindrical shape, and the two ends of the filter cloth 7 can be fixed to the drum frame 6 by fasteners such as a clamp.

[0038] Furthermore, the front wall of the collecting box 3 is provided with a first interface 8; the front end of the first interface 8 is connected to the air compressor, and the rear end of the first interface 8 is connected to the front end of the cylinder rack 6; the first interface 8 is provided with a first pulse valve 9. It should be understood that by starting the air compressor and the first pulse valve 9, the air flow can be intermittently flowed from the inner side of the cylinder rack 6 to the outer side of the cylinder rack 6 through the radial through hole, thereby agitating the filter cloth 7 and causing the solid impurities attached to the filter cloth 7 to fall off, so as to play the role of cleaning the filter cloth 7. The air compressor is usually used in conjunction with an air storage tank. In addition, a second pulse valve can be set at the air inlet of the centrifugal fan 1 or the second interface 12 of the confluence chamber 11, so that the first pulse valve 9 and the second pulse valve are alternately opened and closed, so as to achieve a better cleaning effect. When cleaning the filter cloth 7, the second valve can be closed.

[0039] Furthermore, the filtering mechanism 2 and the first interface 8 are provided in plurality respectively; the filtering mechanism 2 and the first interface 8 correspond one to one.

[0040] Furthermore, the front end of each of the first interfaces 8 is connected to the same shunt pipe 10 , and is connected to the air compressor through the shunt pipe 10 .

[0041] Furthermore, the rear ends of the cartridge racks 6 of the filter mechanisms 2 are connected to the same confluence chamber 11 and are connected to the air inlet of the centrifugal fan 1 through the confluence chamber 11. It should be understood that the confluence chamber 11 is usually disposed in the collection box 3.

[0042] Furthermore, the front wall of the confluence chamber 11 is provided with a plurality of second interfaces 12 ; the second interfaces 12 correspond one-to-one to the cartridge racks 6 and are rotationally connected via second sealed bearings 14 ; the first interfaces 8 are rotationally connected to the corresponding cartridge racks 6 via first sealed bearings 13 .

[0043] Further, an impeller 15 is installed in the drum frame 6 to drive the drum frame 6 to rotate when the airflow passes through. It should be understood that when the airflow flows in the drum frame 6, it will drive the impeller 15 to rotate, thereby promoting the solid impurities attached to the filter cloth 7 to fall off.

[0044] Further, the cartridge frame 6 includes two buckled half frames 16; the two half frames 16 of the cartridge frame 6 are correspondingly provided with connecting parts 17, and are connected by bolts installed on the connecting parts 17. It should be understood that the cartridge frame 6 is arranged as an assembled structure, which is convenient for installing the impeller 15 in the cartridge frame 6 and also convenient for connecting the cartridge frame 6 with the first interface 8 and the second interface 12.

[0045] Furthermore, the impeller 15 is provided with a limiting portion 18; the two half frames 16 of the drum frame 6 are provided with limiting grooves 19 on the opposite surfaces to form a limiting fit with the limiting portion 18 of the impeller 15 when buckled.

[0046] Although specific embodiments of the present invention are described above, those skilled in the art should understand that various changes or modifications may be made to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A ventilation device for a metal plate welding and grinding workshop, characterized in that: include: Centrifugal fan (1); A filtering mechanism (2) connected to the air inlet of the centrifugal fan (1) to intercept solid impurities in the airflow; a collecting box (3) which accommodates the filtering mechanism (2) and collects solid impurities intercepted by the filtering mechanism (2); in, The collection box (3) is connected to the air inlet of the centrifugal fan (1) through the filtering mechanism (2); The bottom of the collecting box (3) is provided with a slag discharge port (4) and is adapted to be fitted with a first valve; The side wall of the collection box (3) is provided with a plurality of air inlet interfaces (5) for installing the bellows expansion tubes, and the air inlet interfaces (5) are provided with a second valve; One end of the bellows telescopic tube away from the air inlet interface (5) forms a suction port.

2. The ventilation device for a metal plate welding and grinding workshop according to claim 1, characterized in that: The filtering mechanism (2) comprises: a cartridge frame (6), and a filter cloth (7) covering the outer circumference of the cartridge frame (6); The cartridge holder (6) has radial through holes for air flow to pass through; The front end of the cartridge rack (6) is connected to the collection box (3), and the rear end of the cartridge rack (6) is connected to the air inlet of the centrifugal fan (1).

3. The ventilation device for a metal plate welding and grinding workshop according to claim 2, characterized in that: The front wall of the collection box (3) is provided with a first interface (8); The front end of the first interface (8) is in communication with the air compressor, and the rear end of the first interface (8) is in communication with the front end of the cartridge rack (6); The first interface (8) is provided with a first pulse valve (9).

4. The ventilation device for a metal plate welding and grinding workshop according to claim 3, characterized in that: The filtering mechanism (2) and the first interface (8) are each provided in plurality; the filtering mechanism (2) and the first interface (8) correspond one to one.

5. The ventilation device for a metal plate welding and grinding workshop according to claim 4, characterized in that: The front end of each of the first interfaces (8) is connected to the same shunt pipe (10), and is connected to the air compressor via the shunt pipe (10).

6. The ventilation device for a metal plate welding and grinding workshop according to claim 5, characterized in that: The rear ends of the cartridge racks (6) of the filter mechanisms (2) are connected to the same confluence chamber (11), and are connected to the air inlet of the centrifugal fan (1) through the confluence chamber (11).

7. The ventilation device for a metal plate welding and grinding workshop according to claim 6, characterized in that: The front wall of the confluence chamber (11) is provided with a plurality of second interfaces (12); The second interface (12) corresponds to the cartridge holder (6) in a one-to-one manner and is rotationally connected via a second sealed bearing (14); The first interface (8) is rotationally connected to the corresponding cartridge holder (6) via a first sealed bearing (13).

8. The ventilation device for a metal plate welding and grinding workshop according to any one of claims 2 to 7, characterized in that: An impeller (15) is installed in the cartridge frame (6) to drive the cartridge frame (6) to rotate when air flows through it.

9. The ventilation device for a metal plate welding and grinding workshop according to claim 8, characterized in that: The cartridge frame (6) comprises two interlocking half frames (16); the two half frames (16) of the cartridge frame (6) are provided with connecting parts (17) respectively, and are connected by bolts installed on the connecting parts (17).

10. The ventilation device for a metal plate welding and grinding workshop according to claim 9, characterized in that: The impeller (15) is provided with a limiting portion (18); The two half frames (16) of the drum frame (6) are provided with limiting grooves (19) on opposite surfaces so as to form limiting cooperation with the limiting portion (18) of the impeller (15) when they are buckled.

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