Ventilation device mounting structure

Abstract

The utility model discloses a ventilation device installation structure which comprises a box body and a fan assembly, the fan assembly comprises an installation base detachably installed on the box body, the installation base is provided with an installation part, fan blades are arranged at the inner end of the installation part in a rotating mode, and a motor with a base body is detachably arranged on the outer side of the installation part. And an output shaft of the motor penetrates through the mounting part, and straight tooth spline structures matched with each other are arranged between the end part of the motor and the fan blades. The mounting seat can be detached relative to the box body, the detachable motor is arranged on the mounting seat, when the motor is mounted, the end of the motor is matched with the fan blades through a straight tooth spline structure, so that detachment and installation of the motor and the fan blades are greatly simplified, and the fan blades can be cleaned only by detaching the mounting seat and then detaching the motor during cleaning; the disassembly is convenient, conditions are provided for rapid cleaning, and the problem that water enters the motor during cleaning is avoided.

Description

Technical Field

[0001] The utility model relates to a ventilation device, in particular to a ventilation device installation structure. Background Art

[0002] Confined spaces can easily cause the accumulation of toxic, harmful, flammable and explosive substances or insufficient oxygen content.

[0003] Before construction is required in a confined space, it is necessary to ventilate the confined space with the aid of a ventilation device. Application No. CN202223077140.8 discloses a ventilation and purification device for safe operation in a confined space, which comprises a ventilation mechanism (5), wherein the ventilation mechanism (5) comprises a protective shell (501), both sides of the protective shell (501) are fixedly connected to the inner side of a connecting plate (4), a driving motor (502) is fixedly sleeved inside the protective shell (501), a rotating shaft (503) is fixedly sleeved at the other end of the output shaft of the driving motor (502), a rear end of the rotating shaft (503) penetrates the protective shell (501) and extends to the rear of the protective shell (501) and is fixedly connected to a cross shaft (504), and a fan (505) is movably connected to the outer surface of the cross shaft (504).

[0004] Since the gas in the limited space contains dust and toxic substances, it needs to be disassembled and cleaned after use. However, in the above patent, the fan is installed by a cross axis, which is troublesome to disassemble and makes it difficult to clean the fan. Utility Model Content

[0005] Based on the deficiency in the prior art that the fan assembly is not convenient to disassemble for cleaning, the utility model provides a ventilation device installation structure.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] The installation structure of the ventilation device includes a box body and a fan assembly, and the fan assembly includes a mounting seat that can be detachably mounted on the box body, the mounting seat has a mounting portion, the inner end of the mounting portion is rotatably provided with fan blades, and the outer side of the mounting portion is detachably provided with a motor with a seat body, and the output shaft of the motor passes through the mounting portion, and a spur spline structure that cooperates with each other is provided between the end and the fan blades. In this solution, the mounting seat can be disassembled relative to the box body, and a detachable motor is provided on the mounting seat. When the motor is installed, its end and the fan blades are matched through a spur spline structure, which greatly simplifies the disassembly and installation of the two. When cleaning, it is only necessary to remove the mounting seat and then remove the motor to clean the fan blades. The convenient disassembly provides conditions for quick cleaning, and will not cause the problem of water entering the motor during cleaning.

[0008] Preferably, a mounting cylinder is provided at the inner end of the mounting portion, and the fan blade includes a central fixed sleeve and a plurality of blades arranged on the side wall of the fixed sleeve, and the fixed sleeve is rotatably sleeved on the mounting cylinder. In this solution, the fixed sleeve of the fan blade can be rotatably connected to the mounting cylinder through a bearing, and three blades are generally arranged on the side wall of the fixed sleeve.

[0009] Preferably, a spur keyway is provided on the fixed sleeve, and a spur spline is provided on the output shaft. After the motor is installed, the spur spline on the motor extends into the spur keyway to drive the fan blades to rotate.

[0010] Preferably, the mounting seat comprises a cylinder and an end plate provided at one end of the cylinder and having a plurality of ventilation holes, wherein the cylinder extends from one side of the box body through the box body to the other side of the box body and is fixed. The mounting portion is located in the middle of the end plate.

[0011] As a preferred embodiment, one end of the cylinder extending to the other side of the box body is provided with an external thread and is threadedly connected with an annular seat with an internal thread. In this solution, when disassembly is required, the mounting seat can be disassembled by simply screwing off the annular seat.

[0012] Air duct fixing scheme 1: a soft air duct is sleeved on the outer wall of the annular seat. This scheme requires the use of a circular annular fixing structure to compress and seal the soft air duct.

[0013] In the second air duct fixing scheme, a gap is provided between the inner thread of the annular seat and the outer thread of the cylinder, and a soft air duct is provided in the gap. This scheme uses the threaded connection structure to compress the soft air duct to form a sealed connection structure.

[0014] Preferably, the diameter of the cylinder is smaller than that of the end plate. The outer diameter of the cylinder is the same as the aperture of the through hole on the box body, while the diameter of the end plate is larger than the diameter of the through hole. After the rear plate is installed, the outer ring area abuts against the end surface of the box body.

[0015] Preferably, at least one limiting column is provided on one side of the box body, and at least one limiting hole is provided on the end plate. The limiting column corresponds to the limiting hole one by one and has matching shapes. When installed, the limiting column extends into the limiting hole. The cooperation between the limiting column and the limiting hole prevents the cylinder body from rotating relative to the box body.

[0016] Preferably, a handle is provided on the top of the box, and a shelf surface or running wheels are provided on the bottom of the box. The box has the function of shelving and installing other components. When in use, a handle is provided on the top for easy carrying, and a shelf surface or running wheels are provided on the bottom for placing on the ground or moving after placement.

[0017] Compared with the prior art, the advantages of the utility model are as follows: the mounting base in the present application can be disassembled relative to the box body, and a detachable motor is arranged on the mounting base. When the motor is installed, its end portion cooperates with the fan blades through a straight tooth spline structure, which greatly simplifies the disassembly and installation of the two. When cleaning, it is only necessary to remove the mounting base and then remove the motor to clean the fan blades. The convenient disassembly provides conditions for quick cleaning, and will not cause the problem of water entering the motor during cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 A perspective view of the present application (left side);

[0020] Figure 2 A perspective view of the present application (right side);

[0021] Figure 3 It is an exploded view of the utility model;

[0022] Figure 4 It is an exploded view of the utility model;

[0023] Figure 5 It is a three-dimensional diagram of the mounting seat in the utility model;

[0024] In the figure: 10, box body; 101, limit column; 20, fan blade; 201, fixed sleeve; 202, blade; 300, seat body; 301, motor; 302, output shaft; 303, spur spline; 40, annular seat; 50, mounting seat; 500, ventilation hole; 501, cylinder; 502, end plate; 503, limit hole; 504, mounting cylinder; 505, spur keyway. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] This embodiment mainly describes the title of the ventilation device installation structure, which is as follows:

[0028] Main program :

[0029] Ventilation device installation structure, such as Figure 1-5 As shown, it includes a housing 10 and a fan assembly, and the fan assembly includes a mounting seat 50 that can be detachably mounted on the housing 10, the mounting seat 50 has a mounting portion, the inner end of the mounting portion is rotatably provided with a fan blade 20, and the outer side of the mounting portion is detachably provided with a motor 301 with a seat body 300, and the output shaft 302 of the motor 301 passes through the mounting portion and a straight spline 505 structure that cooperates with each other is provided between the end and the fan blade 20. In this solution, the mounting seat 50 can be disassembled relative to the housing 10, and a detachable motor 301 is provided on the mounting seat 50. When the motor 301 is installed, its end and the fan blade 20 are matched through the straight spline 505 structure, which greatly simplifies the disassembly and installation of the two. When cleaning, only the mounting seat 50 needs to be removed, and then the motor 301 can be removed to clean the fan blade 20. The convenient disassembly provides conditions for quick cleaning, and the problem of water entering the motor 301 will not be caused during cleaning.

[0030] like Figure 3-5 As shown, the inner end of the mounting portion is provided with a mounting cylinder 504, and the fan blade 20 includes a central fixed sleeve 201 and a plurality of blades 202 arranged on the side wall of the fixed sleeve 201, and the fixed sleeve 201 is rotatably sleeved on the mounting cylinder 504. In this solution, the fixed sleeve 201 of the fan blade 20 can be rotatably connected to the mounting cylinder 504 through a bearing, and the side wall of the fixed sleeve 201 is generally provided with three blades 202. One side of the fixed sleeve 201 is provided with a two-stage groove, wherein the first stage is used for sleeved on the mounting cylinder 504, and the second stage is used for the output shaft 302 to extend.

[0031] like Figure 3-5 As shown, the fixing sleeve 201 is provided with a spur keyway, and the output shaft 302 is provided with a spur spline 303. After the motor 301 is installed, the spur spline 303 on it extends into the spur keyway to drive the fan blade 20 to rotate. The spur keyway is arranged on the side wall of the second-stage groove.

[0032] Mounting seat fixing structure :

[0033] like Figure 3-5 As shown, the mounting seat 50 has a cylinder 501 and an end plate 502 disposed at one end of the cylinder 501 and having a plurality of ventilation holes 500 . The cylinder 501 passes through the box 10 from one side of the box 10 and extends to the other side of the box 10 and is fixed. The mounting portion is located in the middle of the end plate 502 .

[0034] like Figure 1 , 3-5, one end of the cylinder 501 extending to the other side of the box body 10 is provided with an external thread and is threadedly connected to an annular seat 40 with an internal thread. In this solution, when disassembly is required, the mounting seat 50 can be disassembled by simply unscrewing the annular seat 40.

[0035] Duct fixing structure :

[0036] Air duct fixing solution 1: a soft air duct is sleeved on the outer wall of the annular seat 40. This solution requires the use of a circular annular fixing structure to compress and seal the soft air duct.

[0037] In the second air duct fixing scheme, a gap is provided between the internal thread of the annular seat 40 and the external thread of the cylinder 501, and a soft air duct is provided in the gap. In this scheme, the soft air duct is compressed by means of a threaded connection structure to form a sealed connection structure.

[0038] Mounting seat limit structure :

[0039] like Figure 3 As shown, the diameter of the cylinder 501 is smaller than the diameter of the end plate 502. The outer diameter of the cylinder 501 is the same as the aperture of the through hole on the box body 10, while the diameter of the end plate 502 is larger than the diameter of the through hole. After installation, the outer ring area of ​​the rear end plate 502 abuts against the end surface of the box body 10.

[0040] Preferably, at least one limiting column 101 is provided on one side of the box body 10, and at least one limiting hole 503 is provided on the end plate 502. The limiting column 101 corresponds to the limiting hole 503 one by one and has matching shapes. When installed, the limiting column 101 extends into the limiting hole 503. The cooperation between the limiting column 101 and the limiting hole 503 prevents the cylinder 501 from rotating relative to the box body 10.

[0041] Box auxiliary structure :

[0042] Preferably, a handle is provided on the top of the box 10, and a shelf surface or running wheels are provided on the bottom of the box 10. The box 10 has the function of shelving and installing other components. When in use, a handle is provided on the top for easy carrying, and a shelf surface or running wheels are provided on the bottom for placing on the ground or moving after placement. The handle and running wheels are not shown in the drawings.

[0043] The above is a detailed introduction to the titles provided by the utility model. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A ventilation device installation structure, comprising a box body and a fan assembly, characterized in that: The fan assembly includes a mounting seat that can be detachably mounted on the box body, the mounting seat having a mounting portion, the inner end of which is rotatably provided with fan blades, the outer side of which is detachably provided with a motor with a seat body, the output shaft of the motor passes through the mounting portion, and a spur spline structure that cooperates with each other is provided between the end and the fan blades.

2. The ventilation device installation structure according to claim 1, characterized in that: The inner end of the mounting part is provided with a mounting cylinder, and the fan blades include a central fixed sleeve seat and a plurality of blades arranged on the side wall of the fixed sleeve seat, and the fixed sleeve seat is rotatably sleeved on the mounting cylinder.

3. The ventilation device installation structure according to claim 2, characterized in that: A spur keyway is provided on the fixed sleeve, and a spur spline is provided on the output shaft. After the motor is installed, the spur spline on the motor extends into the spur keyway to drive the fan blades to rotate.

4. The ventilation device installation structure according to claim 1, characterized in that: The mounting seat comprises a cylinder and an end plate arranged at one end of the cylinder and provided with a plurality of ventilation holes. The cylinder passes through the box body from one side of the box body and extends to the other side of the box body and is fixed.

5. The ventilation device installation structure according to claim 1, characterized in that: One end of the cylinder extending to the other side of the box body is provided with an external thread and is threadedly connected with an annular seat with an internal thread.

6. The ventilation device installation structure according to claim 5, characterized in that: A soft air duct is sleeved on the outer side wall of the annular seat.

7. The ventilation device installation structure according to claim 5, characterized in that: A gap is arranged between the inner thread of the annular seat and the outer thread of the cylinder, and a soft air duct is arranged at the gap.

8. The ventilation device installation structure according to claim 4, characterized in that: The diameter of the cylinder is smaller than the diameter of the end plate.

9. The ventilation device installation structure according to claim 7, characterized in that: At least one limiting column is provided on one side of the box body, and at least one limiting hole is provided on the end plate. The limiting column corresponds to the limiting hole one by one and has matching shapes. When installing, the limiting column extends into the limiting hole.

10. The ventilation device installation structure according to claim 1, characterized in that: A handle is arranged on the top of the box body, and a shelf surface or running wheels are arranged on the bottom of the box body.

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