Novel negative pressure fan shell

Abstract

The utility model discloses a novel negative pressure fan shell which comprises a shell body, a first folding sealing cover is fixed at one end of the shell body, and one end of the first folding sealing cover is connected with a first mounting plate. According to the technical scheme of the utility model, through the arrangement of the first folding sealing cover with the trapezoidal cross section structure and the second folding sealing cover with the frustum-shaped structure, the first folding sealing cover can freely stretch out and draw back according to the size of a gap between one end of the shell body and the through hole during the connection process of the shell body and the through hole. Similarly, the second folding sealing cover can freely stretch out and draw back according to the size of the gap between the other end of the shell body and the through hole, then the position of the second mounting plate is adjusted so that the second mounting plate can just cover the gap, and polystyrene foam does not need to be used for sealing. And the applicability and the use effect of the shell are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to negative pressure fan technical field, concretely relates to a novel negative pressure fan shell. BACKGROUND

[0002] The negative pressure fan is a kind of machine that can improve any ventilation problem by the principle of air convection and negative pressure ventilation, and the cooling and ventilation effect can reach 90%-97%, and the shell is needed to be fixed during the installation of the negative pressure fan.

[0003] The existing negative pressure fan shell is manually dug out a group of through holes matched with the specification of fan shell on the wall during use, and the shell is fixed in the through hole to realize the overall installation of the negative pressure fan, and when fixing the shell, since the through hole is manually set, there is certain error, so that there is certain gap between the shell and the through hole after installation, and foam glue is needed to seal at this time, so that the use effect is poor, therefore, a novel negative pressure fan shell is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] (One) technical problem to be solved

[0005] The utility model to solve the technical problem is that, according to the present situation of prior art, a novel negative pressure fan shell is provided, which can automatically seal the gap between the shell and the through hole, has good use effect and high applicability.

[0006] (Two) technical scheme

[0007] The utility model discloses a novel negative pressure fan shell, including shell body, the shell body one end is fixed with first folding seal cover, first folding seal cover one end is connected with first mounting plate, the shell body other end is fixed with second folding seal cover, second folding seal cover one end is connected with second mounting plate, the second mounting plate and first mounting plate back wall are all fixed with sealing strip, first mounting plate and second mounting plate are all set up mounting hole.

[0008] Further, the first folding seal cover is fixed between the shell body and the first mounting plate by screw, and the cross section of the first folding seal cover is trapezoidal structure.

[0009] By adopting the above technical scheme, the first folding seal cover can be freely stretched according to the size of the gap between the one end of the shell body and the through hole, and the position of the first mounting plate is adjusted, so that the gap is covered.

[0010] Further, the second foldable sealing cover is fixed between the shell body and the second mounting plate by screws, and the second foldable sealing cover is a frustum structure.

[0011] By adopting the above technical scheme, the second foldable sealing cover can be freely stretched and contracted according to the size of the gap between the other end of the shell body and the through hole, and then the position of the second mounting plate is adjusted to cover the gap.

[0012] Further, the sealing strips are welded on the back walls of the first mounting plate and the second mounting plate.

[0013] By adopting the above technical scheme, the sealing strips can seal the connection between the first mounting plate, the second mounting plate and the wall.

[0014] Further, the mounting holes are formed on the first mounting plate and the second mounting plate.

[0015] By adopting the above technical scheme, the mounting holes facilitate fixing the first mounting plate and the second mounting plate on the wall.

[0016] Further, the shell body is provided with a mounting cavity, and the mounting cavity is in communication with the first foldable sealing cover and the second foldable sealing cover.

[0017] By adopting the above technical scheme, the mounting cavity provides a mounting position for the negative pressure fan.

[0018] Further, the material of the shell body is SMC.

[0019] By adopting the above technical scheme, SMC is a molding compound for making unsaturated polyester glass steel products by dry method, which can make the shell body have the characteristics of light weight, high strength, size stability and the like.

[0020] (Three) beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] In order to solve the existing negative pressure fan shell in the process of using is through in the wall manual digging out a set of with the fan shell specification matching through hole, through the shell is fixed in the through hole to realize the overall installation of negative pressure fan, and in the fixed shell, due to the through hole is manually set, there is a certain error, resulting in the gap between the shell and the through hole after installation, at this time, it is necessary to seal with foam glue, resulting in the problem of poor use effect, the utility model discloses a first folding sealing cover with trapezoidal cross section and a second folding sealing cover with conical structure are arranged, during the connection between the shell body and the through hole, the first folding sealing cover can freely stretch according to the size of the gap between one end of the shell body and the through hole, and then the position of the first mounting plate is adjusted, so that it covers the gap, and the second folding sealing cover can freely stretch according to the size of the gap between the other end of the shell body and the through hole, and then the position of the second mounting plate is adjusted, so that it covers the gap, without using foam glue sealing, effectively improving the applicability and use effect of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a structural diagram of the novel negative pressure fan shell.

[0024] Fig. 2 It is a sectional view of the first folding sealing cover of the novel negative pressure fan shell.

[0025] The following is explained:

[0026] 1, shell body; 2, mounting cavity; 3, first mounting plate; 4, first folding sealing cover; 5, second folding sealing cover; 6, second mounting plate; 7, sealing strip; 8, mounting hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] As Figs. 1-2As shown in the figure, the new negative pressure fan shell in the embodiment comprises a shell body 1, a first folding sealing cover 4 fixed at one end of the shell body 1, a first mounting plate 3 connected at one end of the first folding sealing cover 4, the first folding sealing cover 4 being freely telescopic according to the size of the gap between the one end of the shell body 1 and the through hole, thereby adjusting the position of the first mounting plate 3 so as to cover the gap, a second folding sealing cover 5 fixed at the other end of the shell body 1, a second mounting plate 6 connected at one end of the second folding sealing cover 5, the second folding sealing cover 5 being freely telescopic according to the size of the gap between the other end of the shell body 1 and the through hole, thereby adjusting the position of the second mounting plate 6 so as to cover the gap, a sealing strip 7 fixed on the back wall of the first mounting plate 3 and the second mounting plate 6, the sealing strip 7 sealing the connection between the first mounting plate 3 and the second mounting plate 6 and the wall, mounting holes 8 formed on the first mounting plate 3 and the second mounting plate 6, the mounting holes 8 facilitating the fixation of the first mounting plate 3 and the second mounting plate 6 on the wall.

[0029] As shown in the figure, Figs. 1-2 In the embodiment, the first folding sealing cover 4 is fixed between the shell body 1 and the first mounting plate 3 by screws, the cross section of the first folding sealing cover 4 is in trapezoidal structure, the second folding sealing cover 5 is fixed between the shell body 1 and the second mounting plate 6 by screws, the second folding sealing cover 5 is in conical frustum structure, the sealing strips 7 are welded on the back walls of the first mounting plate 3 and the second mounting plate 6, and the mounting holes 8 are formed on the first mounting plate 3 and the second mounting plate 6.

[0030] As shown in the figure, Figs. 1-2 In the embodiment, the mounting cavity 2 is formed in the shell body 1, the mounting cavity 2 is in communication with the first folding sealing cover 4 and the second folding sealing cover 5, the mounting cavity 2 provides a mounting position for the negative pressure fan, the material of the shell body 1 is SMC, SMC is a molding compound for unsaturated polyester glass steel products manufactured by dry method, which can make the shell body 1 have the characteristics of light weight, high strength, dimensional stability, etc.

[0031] The specific implementation process of the embodiment is as follows: in use, first, the negative pressure fan is fixed in the installation cavity 2, and then the shell body 1 is fixed in the through hole reserved in the wall, and in the process of connecting the shell body 1 and the through hole, the first folding sealing cover 4 can be freely stretched according to the size of the gap between one end of the shell body 1 and the through hole, and then the position of the first mounting plate 3 is adjusted, so that it covers the gap, and the second folding sealing cover 5 can be freely stretched according to the size of the gap between the other end of the shell body 1 and the through hole, and then the position of the second mounting plate 6 is adjusted, so that it covers the gap, without using foaming glue sealing, then the first mounting plate 3 and the second mounting plate 6 are fixed on the wall through the mounting hole 8, and the sealing strip 7 can seal the connection between the first mounting plate 3 and the second mounting plate 6 and the wall.

[0032] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new and improved negative pressure fan housing characterized by: Including the shell body (1), first folding seal cover (4) is fixed in one end of the shell body (1), first mounting plate (3) is connected in one end of the first folding seal cover (4), second folding seal cover (5) is fixed in the other end of the shell body (1), second mounting plate (6) is connected in one end of the second folding seal cover (5), the second mounting plate (6) and the first mounting plate (3) back wall are all fixed with sealing strip (7), the first mounting plate (3) and the second mounting plate (6) are all provided with mounting hole (8).

2. A new type of negative pressure fan housing according to claim 1, characterized in that: The first folding seal cover (4) is fixed between the shell body (1) and the first mounting plate (3) by screw, and the cross section of the first folding seal cover (4) is trapezoidal structure.

3. A new type of negative pressure fan housing according to claim 1, characterized in that: The second folding seal cover (5) is fixed between the shell body (1) and the second mounting plate (6) by screw, and the second folding seal cover (5) is conical frustum structure.

4. A novel negative pressure fan housing according to claim 3, characterized in that: The sealing strip (7) is welded on the back wall of the first mounting plate (3) and the second mounting plate (6).

5. A novel negative pressure fan housing according to claim 4, characterized in that: The mounting hole (8) is formed on the first mounting plate (3) and the second mounting plate (6).

6. A novel negative pressure fan housing according to claim 5, characterized in that: The installation cavity (2) is formed in the shell body (1), and the installation cavity (2) is in communication with the first folding seal cover (4) and the second folding seal cover (5).

7. A novel negative pressure fan housing according to claim 6, characterized in that: The material of the shell body (1) is SMC.

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