CN213414196U - Electric mushroom type ventilator - Google Patents
Electric mushroom type ventilator Download PDFInfo
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- CN213414196U CN213414196U CN202022576103.6U CN202022576103U CN213414196U CN 213414196 U CN213414196 U CN 213414196U CN 202022576103 U CN202022576103 U CN 202022576103U CN 213414196 U CN213414196 U CN 213414196U
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- worm wheel
- stroke
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Abstract
The utility model provides a can be electronic or manually operation, convenient to use, the cost is lower simultaneously, the reliable electronic fungus type draft tube of action. The device comprises a mushroom-shaped ventilating duct, a speed reducing device, a manual/automatic switching device, a mechanism shell, a motor and a hand wheel; the manual/automatic switching device comprises a half clutch, a pair of cylindrical cams which are axially oppositely matched and a switching handle; when the switching handle is rotated to a manual position, the upper cylindrical cam rotates and moves upwards along the axial direction of the screw rod at the same time, and drives the half clutch to move upwards along the axial direction of the screw rod, the half clutch is disengaged from the worm wheel, at the moment, the hand wheel is rotated, the screw rod rotates, the weather-tight cover moves relative to the air duct, and the switching handle is opened and closed manually; when the switching handle is rotated to an automatic position, the cylindrical cam above the switching handle rotates, and simultaneously the cylindrical cam and the half clutch move downwards along the axial direction of the screw rod, the half clutch is meshed with the worm wheel, the power is switched on at the moment, the motor drives the worm, the worm wheel rotates, the half clutch drives the screw rod to rotate, and electric opening and closing are achieved.
Description
Technical Field
The patent relates to a mushroom-type ventilator used in a mechanical ventilation system of a ship, in particular to an electric mushroom-type ventilator which can be controlled locally and remotely.
Background
At present, a ventilation system of ship machinery adopts a CB/T295 standard bacterial type ventilation barrel, but the product can be manually operated on site and cannot be remotely controlled, and a product with a large specification can reach the side of a hand wheel to be opened or closed by means of a ladder stand or an auxiliary platform, so that the operation is inconvenient and safe.
Disclosure of Invention
The utility model aims at providing a can reach electric operation, also can manually operation, convenient to use, the cost is lower simultaneously, the reliable electronic fungus type draft tube of action.
In order to achieve the purpose, the electric mushroom-type ventilator comprises a mushroom-type ventilator, a speed reducer, a manual/automatic switching device, a mechanism shell, a motor and a hand wheel;
the mushroom-type ventilating duct comprises a wind cap, a wind duct, a wind-rain tight cover, a screw rod and a screw rod nut; rib plates which are parallel to the axial direction of the screw rod are symmetrically arranged in the blast cap, wherein the two rib plates penetrate through the guide groove of the guide plate; a screw rod nut matched with the screw rod and two guide plates which are symmetrically arranged and matched with the rib plate in the hood are fixed on the weather tight cover; the air duct and the weather tight cover are both positioned at the inner lower part of the air cap; the upper end of the screw rod penetrates out of the blast cap top plate to be connected with the hand wheel;
the speed reducer comprises a worm wheel, a worm and a bearing; the speed reducer comprises a worm wheel, a worm and a bearing; the screw rod penetrates through a worm wheel to be connected with the half clutch, the worm wheel is rotatably arranged on the mechanism shell through a bearing, and the upper end face of the worm wheel is provided with meshing teeth meshed with the half clutch;
the manual/automatic switching device comprises a half clutch, a pair of cylindrical cams which are axially oppositely matched and a switching handle; the half clutch which can move up and down along the axial direction of the screw rod is connected with the screw rod through a guide flat key; the lower cylindrical cam is fixed on the mechanism shell, and the upper end surface of the upper cylindrical cam connected with the switching handle is attached to the lower end of the flange of the half clutch; the lower end surface of the central part of the half clutch penetrating through the two cylindrical cams is provided with meshing teeth meshed with the meshing teeth on the worm wheel; the screw is sleeved with a spring, and the spring enables the half clutch to be in a state of being meshed with the worm wheel;
when the switching handle is rotated to a manual position, the upper cylindrical cam rotates and moves upwards along the axial direction of the screw rod simultaneously, the half clutch is driven to overcome the spring force and move upwards along the axial direction of the screw rod, the half clutch is disengaged from the worm wheel, at the moment, the hand wheel is rotated, the screw rod rotates, the weather tight cover moves relative to the air duct under the guidance of the guide plate, and the weather tight cover is opened and closed manually; when the switching handle is rotated to an automatic position, the cylindrical cam above the switching handle rotates, and simultaneously the half clutch and the screw rod move downwards along the axial direction of the screw rod under the action of spring force, so that the half clutch is meshed with the worm wheel, the power supply is switched on at the moment, the motor arranged on the mechanism shell drives the worm, the worm wheel rotates, the half clutch drives the screw rod to rotate, and the electric opening and closing of the weather tight cover is realized.
As a further improvement of the electric mushroom-type ventilator, the device also comprises a stroke limiting device fixed on the mechanism shell, wherein the stroke limiting device comprises a stroke limiter, a large bevel gear, a small bevel gear meshed with the large bevel gear, a stroke switch connected on a motor control circuit and a disc cam; a small bevel gear is arranged on an input shaft of the stroke limiter, and a large bevel gear is fixed on the screw rod; a disc cam is fixed on the output shaft of the stroke limiter; when the screw rod rotates, the large bevel gear drives the stroke limiter input shaft to rotate through the small bevel gear, the speed is reduced and changed into the angular displacement of the stroke limiter output shaft through the stroke limiter, the stroke limiter output shaft drives the disc cam to rotate, the disc cam drives the stroke switches located on the periphery of the disc cam to act, and the motor is controlled to operate.
As a further improvement of the above electric mushroom type ventilator, the travel switch includes two: an upper travel switch and a lower travel switch; the stroke limiter is provided with an upper stroke output shaft and a lower stroke output shaft; the two disc cams are respectively arranged on the upper stroke output shaft and the lower stroke output shaft; when the weather-tight cover moves downwards to be in sealing contact with the upper end of the air duct, a lower disc type cam on the lower stroke output shaft drives a lower stroke switch to move, the motor loses power, and the screw stops rotating; when the weather-tight cover moves upwards to be close to the hood cover plate, an upper disc type cam on the upper travel output shaft drives an upper travel switch to act, the motor loses power, and the screw stops rotating.
As a further improvement of the electric bacterial type air funnel, a support seat for supporting the lower end part of the screw rod is arranged in the air funnel; the lower end of the screw rod is rotatably arranged in the supporting seat.
As a further improvement of the above electric mushroom type ventilation duct, an indicator rod is fixed to the weather-tight cover so as to pass upward through the hood cover.
As a further improvement of the above electric mushroom type ventilation tube, the bearing is a thrust bearing capable of bearing the axial force of the screw.
The beneficial effect of this patent: this patent has realized electronic and manual two kinds of mode operations. When the electric mode is used for operation, the motor can be remotely controlled, so that the remote control of the electric bacterial type ventilating duct is realized. In order to realize the switching between electric operation and manual operation, the structure that two matched cylindrical cams are matched with a clutch is adopted in the patent.
Two mating cylindrical cams belong to the prior art, the opposite end faces of which are rugged in the axial direction. Normally, the concave part of one cylindrical cam end surface is matched with the convex part of the other cylindrical cam end surface. When one cylindrical cam rotates relative to the other cylindrical cam, the originally matched concave part and convex part on the opposite end surfaces of the two cylindrical cams are staggered, so that the axial relative positions of the two cylindrical cams are changed.
The teeth on the clutch halves and the teeth on the worm wheel form a complete clutch, which is able to transmit torque when the teeth engage with the teeth. The engaging teeth and the engaging teeth can be regular triangle teeth, trapezoid teeth and the like.
The bearing, in particular the thrust bearing, is capable of carrying the axial forces to which the screw is subjected.
In order to enable the weathertight cover to be closed (weathertight cover is in sealing contact with the upper end of the air duct) or opened (weathertight cover is far away from the air duct and is close to the air cap cover plate), the motor can be powered off and stop rotating in time, and the stroke limiting device formed by the stroke limiter, the disc cam, the stroke switch and the like is adopted in the application.
The stroke limiter belongs to the prior art and is a speed reducer with an input shaft and two output shafts. When the rotation directions of the input shafts are different, the two output shafts are respectively driven to rotate. The stroke limiter is used for converting an angular displacement signal of the forward and reverse rotation of the motor driving the screw rod to a forward and reverse rotation angular displacement signal of the output shaft of the stroke limiter through speed reduction and speed change, and the forward and reverse rotation angular displacement signal of the output shaft of the stroke limiter drives the upper and lower stroke switches to act through the disc cam to control the motor to operate. This application adopts disk cam, travel switch etc. control motor action, and does not adopt plc or singlechip, and the control scheme of motor is simple, low cost.
Therefore, the electric bacterial type ventilating duct can be integrated with other equipment in a ship ventilating system and can be remotely controlled.
Drawings
FIG. 1 is a schematic structural view of an electric mushroom type funnel;
FIG. 2 is a schematic view of the motor, handle, etc. of the electric mushroom-type funnel;
fig. 3 is a control wiring diagram of the electric mushroom type funnel.
Detailed Description
The electric mushroom-type funnel shown in fig. 1 includes components such as a mushroom-type funnel, a reduction gear, a manual/automatic switching device, a stroke limiting device, a mechanism housing, a motor, a coupling, a hand wheel, a control box, and the like.
The mushroom-type air funnel comprises an air cap 6, an air funnel 1, a weather tight cover 3, a screw rod 5, a screw nut 4 and the like. A support seat 2 for supporting the lower end of the screw rod 5 is arranged in the air duct, and the lower end of the screw rod 5 is rotatably arranged in the support seat 2; the weather tight cover 3 is fixed with a screw nut 4, an indicating rod 7 and a guide plate 30; two symmetrical rib plates 31 fixed on the inner wall of the blast cap 6 penetrate through guide grooves formed in the guide plate 30. The lower end of the screw rod 5 is arranged in the supporting seat 2, and the upper end of the screw rod penetrates through the top plate of the blast cap; the weather tight cover 3 is screwed on the screw rod 5 through the screw rod nut 4, the weather tight cover 3 moves up and down when the screw rod 5 rotates, the indicating rod 7 penetrating through the weather cap cover plate moves up and down along with the weather tight cover 3, and the position of the weather tight cover 3 is intuitively reflected.
The speed reducer is composed of a worm wheel 14, a worm 13, a thrust bearing 15 and the like. The upper end of the worm wheel 14 is formed with regular triangular teeth-shaped engaging teeth for engaging with regular triangular teeth-shaped engaging teeth at the lower end of the half clutch 17. The worm wheel 14 is mounted on the mechanism housing 8 on both sides by thrust bearings 15 to bear the axial load generated by the screw when closed.
The manual/automatic switching device comprises a half clutch 17, a cylindrical cam I16 and a cylindrical cam II 9 which are axially matched, a switching handle 19 and the like. The half clutch 17 is in clearance fit with the screw 5 and is connected with the screw through a guide flat key 18; the cylindrical cam II 9 is fixed on the mechanism shell 8, and the upper end face of the cylindrical cam I16 is attached to the lower surface of the flange of the half clutch 17; the switching handle 19 is fastened to the cylindrical cam i 16. The switching handle 19 is rotated to a manual position, the cylindrical cam I16 rotates around the axis of the screw rod, meanwhile, the elasticity of the compression spring 10 is overcome, the half clutch 17 moves upwards together with the half clutch 17, the half clutch 17 is separated from the worm wheel 14, and at the moment, the hand wheel 12 is rotated, so that the weather tight cover 3 is opened and closed manually; the switching handle 19 is rotated to an automatic position, the cylindrical cam I16 rotates around the axis of the screw rod and moves downwards with the half clutch 17 under the action of the elastic force of the compression spring 10, so that the half clutch 17 is meshed with the worm wheel 14, the power supply is switched on, the motor 21 drives the worm 13 and the worm wheel 14 to rotate, the half clutch 17 drives the screw rod 5 to rotate, and the electric opening and closing of the weather tight cover 3 are realized.
The stroke limiting device comprises a stroke limiter 32, a large bevel gear 11, a small bevel gear 33, a lower disc type cam 34, an upper disc type cam 35, an upper stroke switch LSO, a lower stroke switch LSC and the like. The upper disc type cam 35 and the lower disc type cam 34 are respectively arranged at the upper stroke output shaft end and the lower stroke output shaft end of the stroke limiter 32; the large bevel gear 11 is arranged on the screw rod 5, the small bevel gear 33 is arranged on an input shaft of the stroke limiter, and the large bevel gear and the small bevel gear are meshed. When the screw rod rotates, the large bevel gear and the small bevel gear are driven to rotate, the stroke limiter 32 converts the speed reduction and the speed change of an angular displacement signal of the screw rod 5 into an angular displacement signal of an output shaft of the stroke limiter, and the angular displacement signal of the output shaft of the stroke limiter drives a stroke switch to act through a disc cam to control the motor 21 to operate;
the mechanism shell 8 is fixed on the top plate of the blast cap; the lower part of the mechanism shell 8 is provided with a worm wheel 14, a worm 13 and the like, and the upper part is provided with a manual/automatic switching device and a stroke limiting device;
the motor 21 is fixed to the mechanism case 8, and its output shaft is coupled to the worm 13 by a coupling 20.
The mushroom-type ventilating duct consists of a wind cap, a wind duct, a wind and rain tight cover, a screw rod and the like (in the prior art), and is used for being connected with an inlet and an outlet of a ship ventilating system to prevent rainwater and foreign matters from entering the wind duct; the speed reducer consists of a worm wheel, a worm, a thrust bearing and the like and is used for reducing the rotating speed, transmitting the torque and bearing the thrust of the screw; the manual/automatic switching device consists of a jaw clutch, a cylindrical cam and a switching handle and is used for switching between manual operation and electric operation; the stroke limiting device consists of a stroke limiter, a large bevel gear, a small bevel gear and the like and is used for positioning the weather tight cover and outputting a position signal; the mechanism shell is used for installing a speed reduction device, a stroke limiting device, a manual/automatic switching device and protection; the motor is used for providing power and driving the worm and gear speed reducer; the hand wheel is used for manually opening and closing the weather-tight cover when a fault or power failure occurs; the control box is used for controlling the electric bacterial type ventilating ducts.
Electric opening action process: the switching handle 19 is placed in the automatic position and the half clutch 17 engages with the dog clutch formed by the worm wheel 14. Referring to fig. 3, according to the on-off switch SBO on the control box, the switch SBO is closed, the relay KMO coil is electrified, the normally open contact of the relay KMO is closed, the motor is electrified to drive the worm and the worm wheel to rotate, the worm wheel drives the screw rod to rotate clockwise through the clutch, the screw rod nut moves upwards, the weather tight cover moves upwards along with the screw rod nut, meanwhile, the large bevel gear 11 drives the input shaft of the stroke limiter 32 to rotate through the small bevel gear 33, and the upper stroke output shaft and the upper disc cam 35 on the large bevel gear rotate. When the weather-tight cover rises to the upper limit position, the upper disc type cam 35 touches the upper travel switch LSO to act, the normally-closed point of the upper travel switch LSO is disconnected, the coil of the relay KMO is powered off, the normally-open contact of the relay KMO is disconnected, the motor is powered off, and the motor stops rotating; meanwhile, the normally open point of the upper travel switch LSO is closed, and the opening indicating green lamp HG is turned on.
According to opening switch SBC on the control box, switch SBC is closed, relay KMC coil is got electric, relay KMC normally open contact is closed, the motor is got electric, drive worm, the worm wheel rotates, the worm wheel passes through the clutch and drives screw rod anticlockwise rotation, screw-nut moves down, weathertight lid moves down along with screw-nut, big bevel gear 11 drives the input shaft rotation of stroke stopper 32 through little bevel gear 33 simultaneously, down stroke output shaft and the lower disk cam 34 on it rotate. When the weather-tight cover is lowered to the lower limit position, the lower disc type cam 34 touches the lower travel switch LSC to act, the normally-closed point of the lower travel switch LSC is disconnected, the coil of the relay KMC is powered off, the normally-open contact of the relay KMC is disconnected, the motor is powered off, and the motor stops rotating; meanwhile, the normally open point of the lower travel switch LSC is closed, and the closing indicating red light HR is bright.
In the process of electric opening and closing, if jamming or limit failure occurs, and the output of the motor exceeds the rated torque, the motor is controlled to lose power through the current overload protector.
Compared with the prior art, this patent advantage lies in: the remote control can be realized, and the automatic control of the mechanical ventilation system is realized.
Claims (6)
1. The electric mushroom-type ventilator comprises a mushroom-type ventilator, a speed reducer, a manual/automatic switching device, a mechanism shell, a motor and a hand wheel;
the mushroom-type ventilating duct comprises a wind cap, a wind duct, a wind-rain tight cover, a screw rod and a screw rod nut; rib plates which are parallel to the axial direction of the screw rod are symmetrically arranged in the blast cap, wherein the two rib plates penetrate through the guide groove of the guide plate; a screw rod nut matched with the screw rod and two guide plates which are symmetrically arranged and matched with the rib plate in the hood are fixed on the weather tight cover; the air duct and the weather tight cover are both positioned at the inner lower part of the air cap; the upper end of the screw rod penetrates out of the blast cap top plate to be connected with the hand wheel;
the speed reducer comprises a worm wheel, a worm and a bearing; the screw rod penetrates through a worm wheel to be connected with the half clutch, the worm wheel is rotatably arranged on the mechanism shell through a bearing, and the upper end face of the worm wheel is provided with meshing teeth meshed with the half clutch;
the manual/automatic switching device comprises a half clutch, a pair of cylindrical cams which are axially oppositely matched and a switching handle; the half clutch which can move up and down along the axial direction of the screw is connected with the screw through a guide flat key; the lower cylindrical cam is fixed on the mechanism shell, and the upper end surface of the upper cylindrical cam connected with the switching handle is attached to the lower end of the flange of the half clutch; the lower end surface of the central part of the half clutch penetrating through the two cylindrical cams is provided with meshing teeth meshed with the meshing teeth on the worm wheel; the screw is sleeved with a spring, and the spring enables the half clutch to be in a state of being meshed with the worm wheel;
when the switching handle is rotated to a manual position, the upper cylindrical cam rotates and moves upwards along the axial direction of the screw rod simultaneously, the half clutch is driven to overcome the spring force and move upwards along the axial direction of the screw rod, the half clutch is disengaged from the worm wheel, at the moment, the hand wheel is rotated, the screw rod rotates, the weather tight cover moves relative to the air duct under the guidance of the guide plate, and the weather tight cover is opened and closed manually; when the switching handle is rotated to an automatic position, the cylindrical cam above the switching handle rotates, and simultaneously the half clutch and the screw rod move downwards along the axial direction of the screw rod under the action of spring force, so that the half clutch is meshed with the worm wheel, the power supply is switched on at the moment, the motor arranged on the mechanism shell drives the worm, the worm wheel rotates, the half clutch drives the screw rod to rotate, and the electric opening and closing of the weather tight cover is realized.
2. The electric mushroom-type ventilation tube according to claim 1, wherein: the travel limiting device comprises a travel limiter, a large bevel gear, a small bevel gear meshed with the large bevel gear, a travel switch connected to a motor control circuit and a disc cam; a small bevel gear is arranged on an input shaft of the stroke limiter, and a large bevel gear is fixed on the screw rod; a disc cam is fixed on the output shaft of the stroke limiter; when the screw rod rotates, the large bevel gear drives the stroke limiter input shaft to rotate through the small bevel gear, the speed is reduced and changed into the angular displacement of the stroke limiter output shaft through the stroke limiter, the stroke limiter output shaft drives the disc cam to rotate, the disc cam drives the stroke switches located on the periphery of the disc cam to act, and the motor is controlled to operate.
3. The electric mushroom-type ventilation tube according to claim 2, wherein: the travel switch comprises an upper travel switch and a lower travel switch; the stroke limiter is provided with an upper stroke output shaft and a lower stroke output shaft; the two disc cams are respectively arranged on the upper stroke output shaft and the lower stroke output shaft; when the weather-tight cover moves downwards to be in sealing contact with the upper end of the air duct, a lower disc type cam on the lower stroke output shaft drives a lower stroke switch to move, the motor loses power, and the screw stops rotating; when the weather-tight cover moves upwards to be close to the hood cover plate, an upper disc type cam on the upper travel output shaft drives an upper travel switch to act, the motor loses power, and the screw stops rotating.
4. The electric mushroom-type ventilation tube according to claim 1, wherein: a support seat for supporting the lower end part of the screw rod is arranged in the air duct; the lower end of the screw rod is rotatably arranged in the supporting seat.
5. The electric mushroom-type ventilation tube according to claim 1, wherein: an indicating rod which upwards passes through the hood cover plate is fixed on the weather tight cover.
6. The electric mushroom-type ventilation tube according to claim 1, wherein: the bearing is a thrust bearing capable of bearing the axial force of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576103.6U CN213414196U (en) | 2020-11-09 | 2020-11-09 | Electric mushroom type ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022576103.6U CN213414196U (en) | 2020-11-09 | 2020-11-09 | Electric mushroom type ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213414196U true CN213414196U (en) | 2021-06-11 |
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ID=76251073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022576103.6U Active CN213414196U (en) | 2020-11-09 | 2020-11-09 | Electric mushroom type ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213414196U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830278A (en) * | 2021-10-28 | 2021-12-24 | 江苏艺源通风设备制造有限公司 | Low flow resistance silence air distributor |
| CN115230933A (en) * | 2022-08-12 | 2022-10-25 | 广州文冲船厂有限责任公司 | Fungus type ventilating duct and ship |
-
2020
- 2020-11-09 CN CN202022576103.6U patent/CN213414196U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113830278A (en) * | 2021-10-28 | 2021-12-24 | 江苏艺源通风设备制造有限公司 | Low flow resistance silence air distributor |
| CN113830278B (en) * | 2021-10-28 | 2024-06-11 | 江苏艺源通风设备制造有限公司 | Low flow resistance silence air distributor |
| CN115230933A (en) * | 2022-08-12 | 2022-10-25 | 广州文冲船厂有限责任公司 | Fungus type ventilating duct and ship |
| CN115230933B (en) * | 2022-08-12 | 2023-06-20 | 广州文冲船厂有限责任公司 | Fungus type air funnel and boats and ships |
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