CN217094902U

CN217094902U - Fan housing mounting structure of laboratory ventilation system

Info

Publication number: CN217094902U
Application number: CN202220550192.3U
Authority: CN
Inventors: 吴奕剑
Original assignee: Zhejiang Hongxiang Education Equipment Co ltd
Current assignee: Zhejiang Hongxiang Education Equipment Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-08-02
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses a laboratory ventilation system's fan housing mounting structure, include exhaust duct and install the fan housing on the pipeline, exhaust duct is helical bellows, the fan housing has the through-hole with the exhaust duct junction, be provided with on this through-hole inner wall with the screw thread of exhaust duct's spiral ripple adaptation, the fan housing carries out threaded connection through the screw thread adaptation with exhaust duct. The utility model discloses can provide and can also satisfy higher sealed effect when installing fast, still possess the effect of convenient pertinence processing of airing exhaust simultaneously.

Description

Fan housing mounting structure of laboratory ventilation system

Technical Field

The utility model relates to a laboratory ventilation equipment specifically is laboratory ventilation system's fan housing mounting structure.

Background

The laboratory is the place where the test is performed. The laboratory is a scientific cradle, is a base of scientific research and a source of scientific development, and plays a very important role in the scientific development.

All can set up the laboratory at teaching and research all kinds of mechanisms, and carry out the experiment in the laboratory, need have good experimental environment, including ventilation, power supply, air exhaust etc. for example in chemical experiment, just have very high requirement to air exhaust, otherwise produce the poison gas easily, cause the potential safety hazard to the experimenter.

The exhaust pipe generally adopts hard material among the existing ventilation equipment, and this kind of hard material is difficult to angle regulation in the use, is difficult to carry out targeted processing of airing exhaust, and the installation of exhaust pipe and fan housing generally adopts the screw to assemble, and the sealed effect of this kind of assembly between fan housing and exhaust pipe is obvious inadequately, and the effect when leading to airing exhaust also receives the influence.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a ventilation system's in laboratory fan housing mounting structure can also satisfy higher sealed effect when can providing quick installation, still possesses the effect of convenient pertinence processing of airing exhaust simultaneously.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a laboratory ventilation system's fan housing mounting structure, includes exhaust duct and installs the fan housing on the pipeline, exhaust duct is helical bellows, the fan housing has the through-hole with the exhaust duct junction, is provided with the screw thread with exhaust duct's spiral ripple adaptation on this through-hole inner wall, the fan housing carries out threaded connection through the screw thread adaptation with exhaust duct.

As a further improvement of the utility model, the exhaust duct is also connected with a telescopic tube, and a connecting piece matched with the spiral corrugation of the exhaust duct is arranged in the telescopic tube; the exhaust pipeline is in threaded connection with the connecting piece through thread matching.

As a further improvement of the utility model, the connecting piece is the annular, and the diameter and the internal diameter looks adaptation of flexible pipe, the connecting piece passes through interference fit and installs in flexible pipe.

As a further improvement of the utility model, the telescopic pipe is further provided with a shell for limiting the separation of the connecting piece, and the shell is sleeved on the telescopic pipe and connected with the telescopic pipe; the shell is provided with an opening for the air supply and exhaust pipeline to extend out, and the opening is smaller than the connecting piece so as to limit the connecting piece from being pulled out of the telescopic pipe.

As a further improvement, the shell is provided with a clamping block, the position of the telescopic pipe corresponding to the clamping block is provided with a clamping groove, and the shell and the telescopic pipe are connected through the clamping block and the clamping groove.

As a further improvement of the utility model, one side of the fixture block towards the telescopic pipe is provided with a transition inclined plane.

As a further improvement of the utility model, the side wall of the connecting piece is provided with a through hole for installing a bolt, and the connecting piece and the exhaust duct are locked by matching with the bolt through the through hole; the bolt is in threaded connection with the through hole.

As a further improvement of the utility model, the through-hole that is used for construction bolt on the connecting piece is located the internal screw thread arch of connecting piece and sunken juncture.

As a further improvement, the fan housing is provided with the step in the through-hole that is used for installing exhaust pipe, when the fan housing targets in place with exhaust pipe installation, exhaust pipe offsets with the step.

The beneficial effects of the utility model, carry out the screw thread installation with the help of the screw thread of screw thread bellows and fan housing, not only let exhaust pipe possess the effect that can change the angle to can also install fast with the fan housing, realize the installation characteristic without the help of the instrument. And screw-thread fit possesses good sealed effect, also can reduce the air leakage in traditional connected mode, lets the effect of airing exhaust more stable, obvious.

Drawings

Fig. 1 is a schematic view of the overall structure (explosion state) of the present invention;

fig. 2 is a schematic cross-sectional view of the overall structure (explosion state) of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 2;

fig. 5 is an enlarged schematic view of the portion C in fig. 2.

Reference numerals: 1. an exhaust duct; 2. a fan housing; 21. a step; 3. a telescopic pipe; 31. a card slot; 4. a connecting member; 5. a housing; 51. a clamping block; 52. a transition bevel.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings.

As shown with reference to figures 1-5,

the utility model provides a laboratory ventilation system's fan housing mounting structure, includes exhaust duct 1 and installs fan housing 2 on the pipeline, exhaust duct 1 is the helical bellows, fan housing 2 has the through-hole with the 1 junction of exhaust duct, is provided with the screw thread with exhaust duct 1's spiral ripple adaptation on this through-hole inner wall, fan housing 2 carries out threaded connection through the screw thread adaptation with exhaust duct 1.

In the above scheme, exhaust duct 1 adopts helical bellows, compares in ordinary bellows, and its ripple shape has the screw thread effect, carries out the screw thread installation with the help of this screw thread effect and fan housing 2, not only lets exhaust duct 1 possess the effect that can change the angle to can also install fast with fan housing 2, realize the installation characteristics without the help of the instrument. And screw-thread fit possesses good sealed effect, also can reduce the air leakage in traditional connected mode, lets the effect of airing exhaust more stable, obvious.

As a further optimized scheme, steps 21 are arranged in through holes of the fan housing 2 for installing the exhaust duct 1, and when the fan housing 2 and the exhaust duct 1 are installed in place, the exhaust duct 1 abuts against the steps 21.

Wherein the provision of the step 21 helps to form a sealing fit, for example a rubber gasket on the step 21, can increase the sealing effect. The step 21 and the end part of the exhaust duct 1 can be flatly attached to provide a better sealing effect without a rubber gasket, and the user can be provided with a prompt for assembling in place, when the user rotates the fan cover 2 to be installed with the exhaust duct 1, the fan cover 2 and the exhaust duct 1 can be prevented from rotating when being installed in place, and then the user is provided with a prompt for assembling in place.

In order to enable the air exhaust function to be more flexible, the air exhaust pipeline 1 is also connected with a telescopic pipe 3, and a connecting piece 4 which is matched with the spiral corrugation of the air exhaust pipeline 1 is arranged in the telescopic pipe 3; the exhaust pipeline 1 is in threaded connection with the connecting piece 4 through threaded adaptation.

The exhaust duct 1 and the telescopic pipe 3 are also installed by means of spiral corrugations, so that the assembly effect can be kept fast and stable. Directly to flexible pipe 3 inner wall tapping can lead to the inner wall attenuation, if will keep intensity, then need increase the wall thickness, can increase cost and weight by a wide margin this moment, under the circumstances of weight increase, can appear the problem of operational difficulty when operating flexible pipe 3 to because the increase of weight can lead to flexible pipe 3 to stretch out under the action of gravity automatically, lead to being difficult to control, need overcome this problem with the help of other structures. Connect exhaust pipe 1 through the mode of connecting piece 4 in this scheme, then in connecting in flexible pipe 3 through connecting piece 4, this kind of connected mode can adopt bolted connection connecting piece 4 and flexible pipe 3's mode to connect, also can adopt the mode of bloated tight fit or interference fit to connect.

The preferred adoption interference fit's of this scheme mode is connected, wherein, connecting piece 4 is the annular, and the diameter and the internal diameter looks adaptation of flexible pipe 3, connecting piece 4 is installed in flexible pipe 3 through interference fit. The interference fit mode is simple to connect, simple in structure and convenient to assemble, and can improve the production and assembly efficiency.

In order to make the interference fit effect more stable, the telescopic tube 3 is further provided with an outer shell 5 for limiting the connecting piece 4 from dropping off, and the outer shell 5 is sleeved on the telescopic tube 3 and connected with the telescopic tube 3; the housing 5 has an opening through which the air supply and exhaust duct 1 extends, and the opening is smaller than the connection member 4 to restrict the connection member 4 from coming out of the extension tube 3.

Because the opening of shell 5 is less than the size of connecting piece 4, consequently can restrict connecting piece 4 and deviate from the opening of shell 5, utilize shell 5 and flexible pipe 3 to install, can restrict connecting piece 4 in flexible pipe 3, avoid the user to pull exhaust duct 1 too hard when flexible action, lead to exhaust duct 1 to deviate from. Optionally, the connection between the outer shell 5 and the telescopic tube 3 may be performed by a bolt assembly or a snap connection.

In a preferred scheme, the outer shell 5 and the extension tube 3 are connected in a clamping manner, specifically, a clamping block 51 is arranged on the outer shell 5, a clamping groove 31 is arranged on the extension tube 3 corresponding to the clamping block 51, and the outer shell 5 and the extension tube 3 are clamped by the clamping block 51 and the clamping groove 31.

The locking slot 31 provided on the extension tube 3 may be through or in the form of a blind hole. The latch 51 is matched with the latch groove 31, and when the housing 5 is installed on the telescopic tube 3, the latch groove 31 is latched with the latch 51 to limit the falling of the housing 5. The clamping mode also does not need tools, so the quick assembly characteristic is realized in the assembly process.

In order to ensure a faster snap-in engagement of the housing 5 with the telescopic tube 3, the latch 51 is provided with a transition bevel 52 on the side facing the telescopic tube 3. By utilizing the transition inclined plane 52, the clamping can not occur in the process of splicing the outer shell 5 and the extension tube 3, and the assembly between the extension tube 3 and the outer shell 5 can be not blocked by utilizing the guiding function of the inclined plane.

In addition, a through hole for installing a bolt is formed in the side wall of the connecting piece 4, and the connecting piece 4 and the exhaust pipeline 1 are locked in a matched mode through the through hole and the bolt; the bolt is in threaded connection with the through hole.

Because the connection between the connecting piece 4 and the exhaust duct 1 is simply connected in a thread fit manner, the operator can be screwed out under the condition of misoperation. Connecting piece 4 passes through-hole and bolt complex mode, threaded connection bolt on connecting piece 4 to through tight mode locking exhaust pipe 1 of clamp, can increase the resistance, increase exhaust pipe 1's the rotation degree of difficulty, and then reduce the condition that the user rotated exhaust pipe 1 carelessly and drops.

In order to stabilize the locking effect of the bolt, the through hole for installing the bolt on the connecting piece 4 is positioned at the junction of the protrusion and the recess of the internal thread of the connecting piece 4.

The protruding and sunken juncture of screw thread possesses better intensity to can let exhaust duct 1 produce certain surface deformation, more conveniently let bolt and exhaust duct 1 form the locking cooperation.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a laboratory ventilation system's fan housing mounting structure, includes exhaust duct and installs the fan housing on exhaust duct, its characterized in that, exhaust duct is helical bellows, the fan housing has the through-hole with exhaust duct junction, is provided with the screw thread with exhaust duct's spiral ripple adaptation on this through-hole inner wall, the fan housing carries out threaded connection through screw thread adaptation with exhaust duct.

2. The fan housing installation structure according to claim 1, wherein the air exhaust duct is further connected with a telescopic pipe, and a connecting member adapted to the spiral corrugation of the air exhaust duct is arranged in the telescopic pipe; the exhaust pipeline is in threaded connection with the connecting piece through thread matching.

3. The fan housing mounting structure according to claim 2, wherein the connecting member is annular and has a diameter corresponding to an inner diameter of the extension tube, and the connecting member is mounted in the extension tube by interference fit.

4. The fan housing installation structure according to claim 3, wherein the extension tube is further provided with a housing for limiting the connection member from coming off, and the housing is sleeved on the extension tube and connected with the extension tube; the shell is provided with an opening for the air supply and exhaust pipeline to extend out, and the opening is smaller than the connecting piece so as to limit the connecting piece from being pulled out of the telescopic pipe.

5. The fan housing installation structure according to claim 4, wherein the housing is provided with a clamping block, the extension tube is provided with a clamping groove at a position corresponding to the clamping block, and the housing and the extension tube are clamped with each other through the clamping block and the clamping groove.

6. The fan housing mounting structure according to claim 5, wherein a side of the latch facing the extension tube is provided with a transition slope.

7. The fan housing mounting structure according to claim 2, 3, 4, 5 or 6, wherein a through hole for mounting a bolt is formed in a side wall of the connecting member, and the connecting member and the exhaust duct are locked by the bolt through the through hole; the bolt is in threaded connection with the through hole.

8. A wind shield mounting structure according to claim 7, wherein the through hole for mounting the bolt on the connector is located at the junction of the protrusion and the recess of the internal thread of the connector.

9. The fan housing installation structure according to claim 1, 2, 3, 4, 5, or 6, wherein a step is provided in the through hole of the fan housing for installing the exhaust duct, and when the fan housing and the exhaust duct are installed in place, the exhaust duct abuts against the step.