Anti-explosion roof ventilator

Abstract

The utility model discloses an anti-explosion roof ventilator which comprises a shell, the shell is of a hollow frame-shaped structure with the two ends open, the opening in one end of the shell is an air inlet, the opening in the other end of the shell is an air outlet, a motor is arranged in the shell, an impeller is arranged on an output shaft of the motor, and a fan is arranged on the impeller. Two filter plates are arranged at the positions, close to openings in the two ends, of the shell respectively, the filter plates are detachable, a plurality of lock tongues are arranged on one side of each filter plate, a plurality of lock catch mechanisms are arranged on one inner wall of the shell, and the lock catch mechanisms are used in cooperation with the lock tongues. According to the utility model, the filter plate is detachable through the matching of the lock catch mechanism and the lock tongue, and can be easily taken out from the shell, so that the filter plate is convenient to clean and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an explosion-proof roof ventilator. Background Art

[0002] Explosion-proof roof fans are ventilation equipment used in special environments where explosive gases are generated. They circulate indoor air by setting up fans for suction.

[0003] When existing rooftop fans are used to ventilate the room, the fan gas flow is large, and some dust and impurities may adhere to the inside of the fan. When the fan impeller rotates, if it hits hard particles, sparks will be generated. The sparks may ignite flammable materials contained in the air and cause an explosion, thereby causing unnecessary losses. Based on this, an explosion-proof ventilator with a filter has appeared on the market, which uses the filter to filter dust and impurities, reducing the probability of the fan exploding. However, the filter is generally fixed on the fan, which is not convenient to disassemble and clean. Dust and impurities will accumulate on the filter for a long time, which will eventually affect the use of the fan. Utility Model Content

[0004] The utility model aims to solve at least one problem existing in the prior art. To this end, the purpose of the utility model is to provide an explosion-proof roof ventilator.

[0005] To achieve the above purpose, the technical solution of the utility model is:

[0006] An explosion-proof roof ventilator comprises a shell, wherein the shell is a hollow frame structure with openings at both ends, one end of the shell is an air inlet, and the other end is an air outlet, a motor is arranged inside the shell, an impeller is arranged on the output shaft of the motor, a filter plate is arranged at each position near the openings at both ends of the shell, the filter plate is detachable, a plurality of locking tongues are arranged on one side of the filter plate, a plurality of locking mechanisms are arranged on an inner wall of the shell, and the locking mechanisms are used in conjunction with the locking tongues.

[0007] Preferably, the locking mechanism consists of two oppositely arranged locking assemblies, each locking assembly includes a sleeve, a lock and a reset member, the sleeve is fixedly arranged on the inner wall of the shell, the lock is arranged in the sleeve and partially located outside the sleeve, and the reset member is arranged in the sleeve with one end in contact with the lock and the other end in contact with the inner wall of the sleeve.

[0008] Preferably, grooves are provided on both sides of the lock tongue, the lock buckle head is a convex arc shape, and the lock buckle is used in conjunction with the grooves.

[0009] Preferably, a reinforcement layer is provided on both the inner and outer walls of the shell.

[0010] Preferably, the shell is provided with a protective top at one end of the air inlet, and the protective top completely covers the air inlet.

[0011] Preferably, a handle is further provided on the filter plate, and the handle is arranged opposite to the locking tongue.

[0012] Preferably, the motor is an explosion-proof motor.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The filter plate of the utility model is detachable by the lock mechanism and the lock tongue, and can be easily taken out from the housing, which is convenient for cleaning and maintenance of the filter plate.

[0015] 2. The utility model adopts an explosion-proof motor and cooperates with a reinforcement layer, which makes the explosion-proof ability of the fan stronger and also increases the strength of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an overall cross-sectional view of the utility model;

[0018] Figure 3 It is a schematic diagram of the lock mechanism and the lock tongue structure of the utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged view of point A in .

[0020] In the figure: 1. shell, 101. air inlet, 102. air outlet, 2. motor, 3. impeller, 4. filter plate, 401. handle, 5. lock tongue, 501. groove, 6. lock assembly, 601. jacket, 602. lock, 603. reset piece, 7. protective top. DETAILED DESCRIPTION

[0021] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0022] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one" or "one" and the like used in the specification and claims of this application do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in the specification and the appended claims of this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0023] Please refer to Figure 1-4 , an explosion-proof roof ventilator, comprising a shell 1, the shell 1 is a hollow frame structure with openings at both ends, one end of the shell 1 is an air inlet 101, and the other end is an air outlet 102, a motor 2 is arranged inside the shell 1, the motor 2 is fixed on a cross inside the shell 1, an impeller 3 is arranged on the output shaft of the motor 2, a filter plate 4 is arranged at each end of the shell 1 near the openings at both ends, the filter plate 4 is detachable, three locking tongues 5 are fixedly arranged on one side of the filter plate 4 by fasteners, three lock buckles 602 mechanisms are fixedly arranged on an inner wall of the shell 1 by fasteners, the lock buckle 602 mechanism is used in conjunction with the lock tongue 5, the filter plate 4 can be fixed inside the shell 1 through the locking cooperation of the lock buckle 602 mechanism and the lock tongue 5, the filter plate 4 reduces the inhalation of dust and debris, avoids the particles in the dust and debris from touching the impeller 3, and at the same time, no sparks are generated to cause the mixed gas to explode.

[0024] In this embodiment, the motor 2 adopts the YBBP explosion-proof motor 2 produced and sold by Henan Nanyang Explosion-proof Motor 2 Co., Ltd., which has excellent explosion-proof effect and further reduces the occurrence of fan explosion.

[0025] In this embodiment, sliding grooves for use with the filter plate 4 are arranged on both sides of the housing 1, and the filter plate 4 can be inserted into the housing 1 along the sliding grooves.

[0026] Furthermore, the lock 602 mechanism is composed of two relatively arranged lock 602 components 6, each lock 602 component 6 includes a sleeve 601, a lock 602 and a reset member 603, the sleeve 601 is fixedly arranged on the inner wall of the shell 1 by a fastener, the lock 602 is arranged in the sleeve 601 and is partially located outside the sleeve 601, the reset member 603 is arranged in the sleeve 601 and one end is in conflict with the lock 602, and the other end is in conflict with the inner wall of the sleeve 601. When the lock 602 is subjected to force, it will retract into the sleeve 601. When the lock 602 is not subjected to force, it will reset and extend under the action of the spring to fix the lock tongue 5. The two locks 602 can complete the fixing and disassembly of the lock tongue 5 (filter plate 4) through this principle.

[0027] In this embodiment, the reset member 603 is a spring.

[0028] Furthermore, grooves 501 are provided on both sides of the lock tongue 5, and the head of the lock buckle 602 is a protruding arc shape. The lock buckle 602 is used in conjunction with the groove 501. The head of the lock buckle 602 can enter the groove 501 to form a snap fit, thereby fixing the lock tongue 5 (filter plate 4).

[0029] Furthermore, both sides of the head of the locking tongue 5 are arc-shaped, so as to facilitate the locking tongue 5 to enter and exit the space formed by the two lock buckles 602.

[0030] Furthermore, a handle 401 is provided on the filter plate 4 . The handle 401 is arranged opposite to the locking tongue 5 . The handle 401 facilitates pulling out the filter plate 4 .

[0031] Furthermore, a reinforcement layer is provided on both the inner and outer walls of the shell 1, and the reinforcement layer is a polytetrafluoroethylene layer, that is, both the inner and outer walls of the shell 1 are coated with polytetrafluoroethylene, which can play a better protective role.

[0032] Furthermore, the shell 1 is provided with a protective top 7 at one end of the air inlet 101 , and the protective top 7 completely covers the air inlet 101 . The protective top 7 is shielded at the top of the shell 1 to prevent rainwater from falling into the shell 1 .

[0033] The utility model is an explosion-proof roof ventilator, and its working principle is described in conjunction with the accompanying drawings:

[0034] First, an explosion-proof roof ventilator can be installed on the roof. When in use, the fan is started, and the motor 2 drives the impeller 3 to rotate, thereby ventilating the room. The filter plate 4 can prevent dust and impurities from entering the housing 1, thereby reducing the probability of the fan exploding. When the filter plate 4 needs to be cleaned and repaired, it only needs to be pulled out. At this time, the lock tongue 5 and the lock buckle 602 are separated, and the filter plate 4 is separated from the lock of the lock buckle 602 mechanism. After cleaning and maintenance, the filter plate 4 can be put back into the housing 1 and re-fixed in the housing 1 through the cooperation of the lock tongue 5 and the lock buckle 602.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An explosion-proof roof ventilator, comprising a shell, the shell being a hollow frame structure with two openings at both ends, one end of the shell opening being an air inlet, and the other end of the shell opening being an air outlet, a motor being arranged inside the shell, and an impeller being arranged on the output shaft of the motor, characterized in that: The shell is provided with a filter plate near the opening positions at both ends, and the filter plate is detachable. A plurality of locking tongues are provided on one side of the filter plate. A plurality of locking mechanisms are provided on an inner wall of the shell, and the locking mechanisms are used in conjunction with the locking tongues.

2. The explosion-proof roof ventilator according to claim 1, characterized in that: The locking mechanism consists of two oppositely arranged locking components, each locking component includes a sleeve, a lock and a reset member, the sleeve is arranged on the inner wall of the shell, the lock is arranged in the sleeve and partially located outside the sleeve, and the reset member is arranged in the sleeve and one end is in contact with the lock, and the other end is in contact with the inner wall of the sleeve.

3. The explosion-proof roof ventilator according to claim 2, characterized in that: Grooves are arranged on both sides of the lock tongue, the lock buckle head is a convex arc shape, and the lock buckle is used in conjunction with the grooves.

4. The explosion-proof roof ventilator according to claim 1 or 3, characterized in that: A reinforcement layer is arranged on both the inner and outer walls of the shell.

5. The explosion-proof roof ventilator according to claim 1, characterized in that: The shell is provided with a protective top at one end of the air inlet, and the protective top completely covers the air inlet.

6. The explosion-proof roof ventilator according to claim 1 or 3, characterized in that: The filter plate is also provided with a handle, and the handle is arranged opposite to the locking tongue.

7. The explosion-proof roof ventilator according to claim 1, characterized in that: The motor is an explosion-proof motor.

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