CN217817246U - Bidirectional ventilation device - Google Patents
Bidirectional ventilation device Download PDFInfo
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- CN217817246U CN217817246U CN202220826101.4U CN202220826101U CN217817246U CN 217817246 U CN217817246 U CN 217817246U CN 202220826101 U CN202220826101 U CN 202220826101U CN 217817246 U CN217817246 U CN 217817246U
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Abstract
The application provides a two-way ventilation device belongs to ventilation equipment technical field. Including fan case, flexible pipe and the sleeve pipe of taking a breath, install two fans in the fan case, the fan is by motor drive, and every fan all is provided with two switches: the positive switch and the negative switch are used for controlling the running direction of the motor and realizing different output directions of the fan; the two air exchange hoses are respectively and independently connected with the outlets of the two fans; the outlet of the ventilation hose is connected with a sleeve, and the sleeve is provided with a hook to fix the sleeve at the bottom of an operation occasion. The air-conditioning system is applied to a limited space, and has the advantages of high safety, small operation surface, capability of bidirectional ventilation and the like.
Description
Technical Field
The application relates to a bidirectional ventilation device, and belongs to the technical field of ventilation equipment.
Background
Confined spaces are generally intended for closed/semi-closed installations and situations, and such confined spaces pose a threat to the physical health and life safety of the entering or exploring personnel.
Traditional finite space takes a breath, need open two machines in step before the construction, and one trades wind, and a gas transmission, this kind of mode function singleness just has certain drawback: firstly, in a limited space, the area of a working hole in the well is often small, two working holes are used simultaneously, and the occupied area is large; and secondly, the condition of discontinuous ventilation and air supply is easy to occur when the conventional ventilation device is used.
With the aging of equipment and facilities built in early stage of water affairs industry year by year, especially the underground construction often needs to complete operation in underground valve wells and ponds. The construction is carried out in a limited space for a long time, which has great harm to the bodies of constructors and has huge hidden troubles. In order to reduce the hidden danger and harm, the air exhausting and air exchanging problem of the limited space needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a bidirectional ventilation device, which has a reasonable structure, is convenient to use, is economical and practical, and can achieve the effect of multi-directional ventilation and ventilation in a limited space.
Specifically, the method is realized through the following scheme:
the utility model provides a two-way ventilation device, includes fan box, ventilation hose and sleeve pipe, install two fans in the fan box, the fan is by motor drive, and every fan all is provided with two switches: the positive switch and the negative switch are used for controlling the running direction of the motor and realizing different output directions of the fan; two air exchange hoses are arranged and are respectively and independently connected with outlets of the two fans; the outlet of the ventilation hose is connected with a sleeve, and the sleeve is provided with a hook and fixed at the bottom of an operation occasion.
The device realizes the control of forward and reverse air transmission by matching the fan box provided with the two fans with the two air exchange hoses and the forward and reverse switches, each fan can switch the wind direction, the control of air flow between the bottom of an operation occasion and the top of the operation occasion is realized, and the air exchange and ventilation of the operation occasion are completed.
Further, it is preferable that:
the fan is located on the fan base, the base is arranged at the bottom of the fan box, and the fan base is movably mounted on the base, so that the movable mounting of the fan and the fan box is realized. More preferably, the base is provided with a clamping groove, the fan base is provided with a buckle, and the buckle is buckled in the clamping groove to realize the movable connection of the base and the fan base. The buckle includes cramp and apron, and the apron is fixed with the fan, and the notch that the apron size is than the draw-in groove is big, and the cramp card is gone into in the draw-in groove.
The number of the sleeves is two, the sleeves are arranged corresponding to the ventilation hose, and the included angle theta between the two sleeves is 30-75 degrees.
The ventilation hose is provided with a preformed hole, and the preformed hole is connected with a bypass pipe to meet the requirements of ventilation and air quantity adjustment.
The ventilation hose is a wind-tight cloth pipe.
The positive switch and the negative switch are positioned at the top of the fan, so that the air discharge and supply regulation of the fan are realized.
When the bidirectional ventilation and air exchange device is applied to a limited space, the fan box is fixed above an operation occasion, the fan is installed in the fan box, the outlet at the bottom of the fan is respectively connected with the ventilation hose, the bottom of the ventilation hose is fixed with the bottom of the operation occasion through the hook on the sleeve, the ventilation hose and the fan form an air transmission channel, and the positive switch and the negative switch control the running direction of the motor so as to change the ventilation and air exchange directions of the corresponding fan. The application reduces the operation area and the power connection circuit, can complete the operation of controlling one and controlling two on one fan, improves the working efficiency and the safety guarantee, further improves the safety production condition, and advances and improves the safety production level.
Drawings
FIG. 1 is a schematic structural diagram of the present application;
FIG. 2 isbase:Sub>A schematic view of the structure in the direction A-A in FIG. 1;
FIG. 3 is a partial enlarged view of the portion a;
FIG. 4 is a schematic view of the structure in the direction B-B in FIG. 1;
FIG. 5 is a partial enlarged view of the area b;
FIG. 6 is a schematic diagram of a fan circuit in accordance with the present application;
fig. 7 is a circuit control diagram of the present application.
Reference numbers in the figures: 1. a fan box; 1a, a first fan; 1b, a second fan; 11. a base; 12. a positive switch; 13. a reverse switch; 14. a fan base; 2. a ventilation hose; 2a, a first ventilation pipe; 2b, a second air exchange tube; 3. a sleeve; 4. a card slot; 41. a trench wall; 411. a notch; 42. a trough floor; 5. a motor; 6. buckling; 61. buckling pieces; 62. a cover plate; 63. connecting blocks; 7. hooking; 8. a bypass pipe.
Detailed Description
Example 1
The two-way ventilation device of this embodiment combines fig. 1, and top-down includes fan case 1, base 11, breather hose 2 and sleeve pipe 3, installs two fans in the fan case 1: fan 1a and fan two 1b, every fan respectively corresponds an independent motor 5, and the fan is installed on fan seat 14, and 1 bottom of fan case is base 11, on 14 movable mounting bases 11 of fan seat, 11 below of base then connect out two flexible pipe 2 of taking a breath: the first air exchange pipe 2a and the second air exchange pipe 2b, the first air exchange pipe 2a is communicated with the first fan 1a, the second air exchange pipe 2b is communicated with the second fan 1b, a sleeve 3 is respectively connected below each air exchange hose 2, the sleeve 3 extends into the bottom of an operation occasion, and the top of each fan is provided with a pair of positive and negative switches: the positive switch 12 and the negative switch 13, the positive switch 12 and the negative switch 13 are both connected with the motor 5, and the motor steering control is realized through the starting of the positive switch 12 or the negative switch 13, so that the change of the air conveying direction of the fan is shown.
In the scheme, the fans, the fan box 1, the ventilation hose 2 and the sleeve 3 form a gas transmission path, the main body of each fan is of a transverse square structure shown in figure 1, two fans are arranged in the fan box 1, and in combination with figure 6, each fan can realize ventilation air cutting through the matching of the positive switch 12 and the negative switch 13 with the motor 5. Two air exchange hoses 2 are hermetically arranged at the lower end of the fan box 1, and the air exchange hoses 2 are communicated to the bottom of the operation through a sleeve 3.
The circuit control principle of the bidirectional ventilation process is shown in fig. 7:
A. forward rotation control:
the push-down of the push-down button SB1,
(1) The SB1 normally closed contact is disconnected first, and the KM2 is interlocked at the moment;
(2) The SB1 normally open contact is closed, and the KM1 coil is electrified, at this moment: (1) when the KM1 self-locking contact is closed, self-locking is realized, the motor M starts continuous forward rotation, (2) when the KM1 interlocking contact is disconnected, the KM2 is interlocked, (3) the KM1 main contact is closed, and the motor M starts continuous forward rotation.
B. Reverse control:
the push-down of the push-down button SB2,
(1) The SB2 normally closed contact is disconnected, the KM1 coil loses power, and at the moment: (1) KM1 self-locking contact is disconnected, contact self-locking is performed, a motor M loses power, (2) a KM1 main contact is disconnected, the motor M loses power,
(2) The SB2 normally closed contact is disconnected, the KM1 coil loses power, the KM1 interlocking contact is closed, the KM2 coil gets power, and at the moment: (1) KM2 self-locking contact is closed to realize self-locking, and motor M starts continuous reverse rotation, (2) KM2 main contact is closed, and motor M starts continuous reverse rotation, (3) KM2 interlocking contact is opened to realize interlocking to KM 1.
(3) The SB1 normally open contact is closed, and the KM2 coil is electrified, at this moment: (1) KM2 self-locking contact is closed to realize self-locking, and motor M starts continuous reverse rotation, (2) KM2 main contact is closed, and motor M starts continuous reverse rotation, (3) KM2 interlocking contact is opened to realize interlocking to KM 1.
Example 2
The present embodiment is the same as embodiment 1 in arrangement and working principle, and the difference is that: the fan box 1 is arranged on a base 11, and with reference to fig. 2, a clamping groove 4 is arranged above the base 11; the fan is arranged on the fan base 14, and with reference to fig. 4, a buckle 6 is arranged below the fan base 14; the buckle 6 is buckled into the clamping groove 4, so that the movable connection between the fan base 14 and the base 11 is realized, and the fan is convenient to mount, dismount and maintain.
In this case, as a specific implementation:
referring to fig. 3, the card slot 4 includes a slot wall 41 and a slot bottom plate 42, a slot opening 411 having an opening is provided above the slot wall 41, and the slot opening 411 is located right above the slot bottom plate 42.
Referring to fig. 5, the buckle 6 includes a buckle piece 61 and a cover plate 62, and the buckle piece 61 is located below the cover plate 62.
In the above structure, there are special requirements for the dimensions: slot floor 42 width D 4 < width D of notch 411 1 < width B of tab 61 2 Not more than the inner width D of the groove wall 41 2 < outer width D of the groove wall 41 3 < width B of cover 62 1 . The width of the buckle sheet 61 is the same as or close to the inner width of the groove wall 41, so that the mobility of the buckle sheet is reduced, and the installation fastness can be improved.
When the motor is installed, the buckle piece 61 is clamped into the semi-closed space formed by the slot wall 41 through the slot 411, one side of the cover plate 62 is fixed with the bottom of the motor base 14, and the other side forms a sealing plate to cover the slot 411.
As an alternative, the above-mentioned cleat 61 is mounted below the cover plate 62 by a connecting block 63, the width B of the connecting block 63 3 Is less than or equal to the width D of the bottom plate 42 of the groove 4 When installed, the connecting block 63 provides a space for the buckle plate 61 to move longitudinally, and the connecting block 63 corresponds to the groove bottom plate 42 in the transverse direction to reinforce the transverse strength.
Example 3
The present embodiment is the same as embodiment 1 in arrangement and working principle, and the difference is that: referring to fig. 1, the outer side of the sleeve 3 can be provided with a hook 7, and the hook 7 pulls the sleeve 3 outwards, so that the included angle theta between the two sleeves 3 is kept near 60 degrees, and the operating range of the two ventilation hoses 2 is effectively enlarged.
Example 4
The present embodiment is the same as embodiment 1 in arrangement and working principle, and the difference is that: with reference to fig. 1, a preformed hole can be opened in the middle of the ventilation hose 2, the preformed hole is connected with a bypass pipe 8, ventilation and air quantity can be adjusted according to different operation requirements by means of the bypass pipe, and meanwhile, the preformed hole can be selectively opened according to construction environments, so that bottom replacement and middle section strengthening are guaranteed.
In the above scheme, the ventilation hose 2 can be a windproof pipe made of windproof cloth, can be folded and is convenient to collect and store, and the sleeve 3 can be an iron sleeve and is convenient to position.
The top sealing buckle of the ventilation hose 2 is fixedly connected to the lower end of the fan box 1, the ventilation air switches are two pairs of positive switches 12 and negative switches 13 which are located on a top cover of the fan, each switch can be controlled to exhaust and send air, ventilation air is selected to be opened and switched according to the construction environment, the characteristics of a limited space are combined, a targeted exhaust ventilation system is manufactured, the problems of exhaust of construction gas and continuity in the limited space are solved, and the damage of toxic gas to constructors during operation in the limited space can be effectively avoided.
Most poisonous and harmful gas density is big than the air quality in the finite space, and at two air exchange hose 2 of fan case 1's lower extreme seal installation and sleeve pipe 3, and sleeve pipe 3 leads to the operation space bottom, can send the air-out of fan to the operation bottom, if there is water during the operation, then the air-out of fan is sent to the surface of water, realizes carrying out effectual emission and the input of gentle breeze to poisonous and harmful gas.
When carrying out the operation of effective space, open two motors 5 of fan, one is discharged, and another air supply, the gaseous replacement in completion limited space that can be quick like this, the effectual circulation of air in the operating environment of having strengthened can improve the factor of safety after the operation personnel goes into the well again.
Claims (9)
1. A two-way ventilation device is characterized in that: including fan case, flexible pipe and the sleeve pipe of taking a breath, install two fans in the fan case, the fan is by motor drive, and every fan all is provided with two switches: the positive switch and the negative switch are used for controlling the running direction of the motor and realizing different output directions of the fan; two air exchange hoses are arranged and are respectively and independently connected with outlets of the two fans; the outlet of the ventilation hose is connected with a sleeve, and the sleeve is provided with a hook and fixed at the bottom of an operation occasion.
2. A bi-directional ventilation device as set forth in claim 1, wherein: the fan is located on the fan base, the base is arranged at the bottom of the fan box, and the fan base is movably mounted on the base, so that the movable mounting of the fan and the fan box is realized.
3. A bi-directional ventilation device as set forth in claim 2, wherein: the fan base is provided with a clamping groove, the fan base is provided with a buckle, and the buckle is buckled in the clamping groove, so that the movable connection of the base and the fan base is realized.
4. A bi-directional ventilation device as set forth in claim 3, wherein: the buckle includes cramp and apron, and the apron is fixed in the fan bottom, and in the cramp card was gone into to the cramp, and the apron size was bigger than the notch of draw-in groove.
5. A bi-directional ventilation device as set forth in claim 1, wherein: the number of the sleeves is two, the sleeves are arranged corresponding to the ventilation hose, and the included angle theta between the two sleeves is 30-75 degrees.
6. A bi-directional ventilation device as set forth in claim 1, wherein: the number of the sleeves is two, the sleeves are arranged corresponding to the ventilation hose, and an included angle theta between the two sleeves is 60 degrees.
7. A bi-directional ventilation device as set forth in claim 1, wherein: the ventilation hose is provided with a preformed hole, and the preformed hole is connected with a bypass pipe.
8. A bi-directional ventilation device as set forth in claim 1, wherein: the ventilation hose is a wind-tight cloth pipe.
9. A bi-directional ventilation device as set forth in claim 1, wherein: the positive switch and the negative switch are positioned at the top of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220826101.4U CN217817246U (en) | 2022-04-11 | 2022-04-11 | Bidirectional ventilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220826101.4U CN217817246U (en) | 2022-04-11 | 2022-04-11 | Bidirectional ventilation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217817246U true CN217817246U (en) | 2022-11-15 |
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ID=83980000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220826101.4U Active CN217817246U (en) | 2022-04-11 | 2022-04-11 | Bidirectional ventilation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217817246U (en) |
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2022
- 2022-04-11 CN CN202220826101.4U patent/CN217817246U/en active Active
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