CN216307932U - Lifting machine head and smoke exhaust device - Google Patents

Abstract

The utility model relates to a lifting machine head and a smoke exhaust device, which comprises an outer machine head component, an inner machine head component and a lifting driving mechanism, wherein the outer machine head component is provided with a containing cavity communicated up and down, the top end of the containing cavity is provided with an upper opening, the bottom end of the containing cavity is provided with a lower opening, and the bottom end of the outer machine head component can be detachably arranged on the top surface of the smoke exhaust device. The inner head assembly is provided with a hollow smoking cavity, the front side of the smoking cavity is provided with a smoking port, and the bottom of the smoking cavity is provided with a smoke outlet. The one end of lift actuating mechanism is connected and lift actuating mechanism's the other end and interior head module are connected with outer head module, and lift actuating mechanism can drive interior head module and carry out the elevating movement to make the smoking mouth stretch out through the upper shed and hold the chamber and can drive interior head module and hide in holding the intracavity, outlet flue and under shed intercommunication. Through the lifting machine head arranged on the top surface of the smoke exhaust device, the problem that oil smoke flows backwards through the oil smoke suction port to enter a kitchen is solved, and the oil smoke exhaust device is easy to disassemble, wash and maintain.

Description

Lifting machine head and smoke exhaust device

Technical Field

The utility model relates to the technical field of kitchen utensils, in particular to a lifting machine head and a smoke exhaust device.

Background

The integrated kitchen is a kitchen household appliance integrating multiple functions of a range hood, a gas stove, a disinfection cabinet, a storage cabinet and the like, and has the advantages of space saving, good oil fume extraction effect, energy saving, low consumption, environmental protection and the like. After the existing integrated kitchen range or lower-discharge range hood is stopped to be used, part of oil smoke flows backwards into a kitchen through a smoke suction port, and oil stains attached to the inside of a smoke suction cavity emit peculiar smell into the kitchen through the smoke suction port.

In addition, in the existing integrated stove with the lifting function, a lifting driving motor is generally placed inside an air box or a cabinet body of the integrated stove, and the lifting driving motor is exposed in an oil pollution environment for a long time, so that the fault risk is high, and the service life of the lifting driving motor is influenced; and inside lift driving motor arranged bellows in, the dismouting maintenance is convenient inadequately, brings not good consumption experience for the consumer.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above disadvantages and shortcomings of the prior art, the present invention provides a lift head and a smoke exhaust device, which solves the technical problem that a lift driving motor is placed inside a bellows or an integrated oven cabinet body and is difficult to disassemble, wash and maintain.

(II) technical scheme

In order to achieve the purpose, the main technical scheme adopted by the lifting machine head comprises the following steps:

the outer head assembly is provided with an accommodating cavity which is communicated up and down, the top end of the accommodating cavity is provided with an upper opening, the bottom end of the accommodating cavity is provided with a lower opening, and the bottom end of the outer head assembly can be detachably arranged on the top surface of the smoke exhaust device;

the inner machine head assembly is provided with a hollow smoking cavity, the front side of the smoking cavity is provided with a smoking port, and the bottom of the smoking cavity is provided with a smoke outlet; and the number of the first and second groups,

one end of the lifting driving mechanism is connected with the outer head assembly, the other end of the lifting driving mechanism is connected with the inner head assembly, and the lifting driving mechanism can drive the inner head assembly to perform lifting movement so that the smoking port extends out of the accommodating cavity through the upper opening and can drive the inner head assembly to be hidden in the accommodating cavity; the smoke outlet is communicated with the lower opening.

Preferably, the outer head assembly comprises a left side plate, a front plate, a right side plate and a rear plate which are connected in sequence, the front plate and the rear plate are oppositely arranged in the front and the rear direction, the left side plate and the right side plate are oppositely arranged in the left and the right direction, the lower end of the outer head assembly is connected with a bottom plate, the bottom plate is provided with the lower opening, and the lower opening is positioned above the smoke exhaust device.

Preferably, the left side plate, the front plate and the right side plate are connected into an integral structure, the left side plate is bent to form a left connecting edge, the right side plate is bent to form a right connecting edge, the left connecting edge and the right connecting edge are oppositely arranged, and the rear plate is respectively connected with the left connecting edge and the right connecting edge; the edge of the bottom plate is welded with the bottom edges of the left side plate and the right side plate respectively.

Preferably, the lifting driving mechanism comprises a driving motor, a transmission rod and a pair of push rod assemblies;

the push rod assembly comprises a push rod seat and a lifting body, the push rod assembly is inserted into the accommodating cavity, the push rod seat is connected with the outer head assembly, and the lifting body is connected with the inner head assembly;

the driving motor is arranged between the pair of push rod seats, the output end of the driving motor is connected with the transmission rod, and the end part of the transmission rod is respectively connected with the input end of the push rod seat; when the driving motor drives the transmission rod to rotate, the transmission rod can drive the lifting body to move up and down relative to the push rod seat, and then the inner head assembly moves up and down in the accommodating cavity.

Preferably, the inner head assembly comprises a left shell, a front shell, a right shell and a rear shell which are sequentially connected, a top plate is arranged at the upper end of the inner head assembly, the lower end opening of the inner head assembly is the smoke outlet, and the smoke suction port is arranged on the front shell.

Preferably, the inner head assembly further comprises a connecting support and a pair of left and right side partition shells arranged in the inner head assembly, the side partition shells are connected to edges of the left and right sides of the smoking port in a one-to-one correspondence manner, the inner cavity of the inner head assembly is divided into a lifting cavity located on the outer side of the side partition shell and the smoking cavity located between the pair of side partition shells by the side partition shells, and the lifting body is arranged in the lifting cavity in a penetrating manner; the connecting bracket is connected with the lifting body.

Preferably, the inner head assembly further comprises a top partition; the top partition shell is formed by extending the upper side edge of the smoking port to the rear shell, the top partition shell is arranged between the paired side partition shells, the side partition shells are welded on the left side edge and the right side edge of the smoking port in a one-to-one correspondence manner, the top partition shell is attached to the paired side partition shells, the top partition shell divides the inner cavity of the inner head assembly into a support cavity positioned between the top partition shell and the top plate, the support cavity is communicated with the lifting cavity, and the smoking cavity is a cavity with three closed surfaces and downward openings; the connecting bracket is fixed in the bracket cavity.

Preferably, the push rod assembly further comprises a screw rod, the bottom end of the screw rod is connected to the push rod seat, the lifting body is sleeved outside the screw rod, and the lifting body and the screw rod are in screw transmission;

the push rod seat comprises an inner gear shell, and an input gear and an output gear which are meshed with each other, wherein the input gear and the output gear are arranged in the inner gear shell; the input gear is provided with a transmission hole matched with the transmission rod, and the output gear is provided with a connecting hole connected with the screw rod.

Preferably, the lifting body comprises a hollow sleeve and a threaded seat arranged at the bottom of the sleeve, the threaded seat is in threaded connection with the screw rod, the screw rod is inserted into the sleeve, and the top end of the sleeve is fixedly connected with the connecting support.

Preferably, a fixing port is formed in the bottom plate, an adapter is further fixed to the lower end of the push rod seat, the adapter is fixed to the fixing port, and the lifting body and the screw of the push rod assembly penetrate into the accommodating cavity through the fixing port.

Preferably, the left side shell is bent to form a left fixing edge, the right side shell is bent to form a right fixing edge, the left fixing edge and the right fixing edge are arranged oppositely, and the rear shell is connected with the left fixing edge and the right fixing edge respectively.

Preferably, the driving motor comprises a motor body and a reduction gearbox, the motor body is fixed on the outer side of the reduction gearbox, an output shaft of the motor body is connected with an input shaft of the reduction gearbox, and the reduction gearbox is sleeved on the transmission rod and can transmit torque to the transmission rod.

Further, the utility model provides a smoke exhaust device, which comprises the lifting machine head, wherein the smoke exhaust device is an integrated stove or a lower-row type smoke exhaust machine.

(III) advantageous effects

The utility model has the beneficial effects that: the utility model provides a lifting machine head and a smoke exhaust device, wherein the lifting machine head is fixed above an integrated cabinet body (or a lower-discharge range hood air box), the lifting machine head is divided into a fixed outer machine head component and an inner machine head component which is arranged in the outer machine head component in a sliding manner, a lifting driving mechanism is arranged in the outer machine head component, and the lifting driving mechanism drives the inner machine head component to move up and down relative to the inner machine head component. When the kitchen ventilator is in a descending state, the inner head assembly is completely contained in the outer head assembly, and the smoke suction port is positioned below the top end of the front plate of the outer head assembly, so that the problem that in the prior art, after the smoke exhaust device is stopped to be used, oil smoke flows backwards through the smoke suction port and enters a kitchen is effectively solved. The lift aircraft nose detachably installs the top surface at fume extractor, only needs to dismantle the lift aircraft nose when needing the maintenance in the use and maintains the washing, maintains maintenance convenient and fast. The utility model has simple structure and convenient production and installation, and is suitable for large-scale production and manufacturing.

Drawings

FIG. 1 is an overall structural view of a lift head of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is an overall cross-sectional view of the elevator head of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is an overall exploded view of the elevator head of the present invention;

FIG. 6 is an exploded view of the outer head assembly of the elevator head of the present invention;

FIG. 7 is an exploded view of the inner head assembly of the elevator head of the present invention;

FIG. 8 is an exploded view of the pusher bar assembly of the elevator head of the present invention;

FIG. 9 is an exploded view of the lift drive mechanism of the lift head of the present invention;

fig. 10 is an overall schematic view of the smoke evacuation device of the present invention.

[ description of reference ]

1: an outer head assembly; 10: an accommodating chamber; 101: an upper opening; 102: a lower opening; 103: a fixed port; 11: a front plate; 12: a back plate; 13: a left side plate; 131: a left connecting edge; 14: a right side plate; 141: a right connecting edge; 15: a base plate; 16: a rail bracket; 2: an inner head assembly; 20: a smoking chamber; 201: a smoking port; 202: a smoke outlet; 21: a front housing; 22: a rear housing; 23: a left side case; 24: a right side case; 25: a top plate; 26: a side partition shell; 27: a top septum shell; 28: connecting a bracket; 29: a lifting cavity; 231: a left fixed edge; 241: a right fixed edge; 3: a lifting drive mechanism; 31: a drive motor; 32: a transmission rod; 33: a push rod assembly; 34: a support; 311: a motor body; 312: a reduction gearbox; 313: a deceleration turbine; 3111: an output shaft; 3131: a turbine bore; 331: a push rod seat; 332: a lifting body; 333: a screw; 334: a transfer seat; 335: a guide cylinder; 336: a guide end cover; 3311: an inner gear case; 3312: an input gear; 33121: a drive bore; 3313: an output gear; 33131: connecting holes; 3314: a bearing; 3321: a sleeve; 3322: a threaded seat; 3323: closing the plate; 4: a slide rail assembly; 5: a microswitch; 6: a smoke exhaust device.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 3.

For a better understanding of the above-described technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the utility model are shown in the drawings, it should be understood that the utility model can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

As shown in fig. 1, 2 and 3, the present invention provides a lifter head, which includes an outer head assembly 1, an inner head assembly 2 and a lifting driving mechanism 3, wherein the outer head assembly 1 has an accommodating cavity 10 which is communicated up and down, an upper opening 101 is arranged at the top end of the accommodating cavity 10, a lower opening 102 is arranged at the bottom end of the accommodating cavity 10, and the bottom end of the outer head assembly 1 can be detachably mounted on the top surface of a smoke exhaust device 6. The inner head assembly 2 has a hollow smoking cavity 20, a smoking port 201 is provided at the front side of the smoking cavity 20, and a smoking outlet 202 is provided at the bottom of the smoking cavity 20. One end of the lifting driving mechanism 3 is connected with the outer head assembly 1, the other end of the lifting driving mechanism 3 is connected with the inner head assembly 2, and the lifting driving mechanism 3 can drive the inner head assembly 2 to perform lifting movement, so that the smoking port 201 extends out of the accommodating cavity 10 through the upper opening 101 and can drive the inner head assembly 2 to be hidden in the accommodating cavity 10. Wherein the smoke outlet 202 is always in communication with the lower opening 102 regardless of the state of the inner head assembly 2.

In the above embodiment, lift actuating mechanism 3 sets up in aircraft nose subassembly 1 outward, lift actuating mechanism 3 drives interior aircraft nose subassembly 2 and stretches out or income in the aircraft nose subassembly 1 outward, because install on 6 top surfaces of fume extractor with outer aircraft nose subassembly 1 detachably, only need when needing to wash the maintenance lift aircraft nose dismantle can, the follow-up maintenance work of this product of being convenient for, and the setting that holds chamber 10 makes interior aircraft nose subassembly 2 and lift actuating device can be reasonable assigns in outer aircraft nose subassembly 1, and hold the opening in chamber 10 upper end then can ensure that interior aircraft nose subassembly 2 can carry out the elevating movement in outer aircraft nose subassembly 1. Further, the smoke suction port 201 can extend out of the accommodating cavity 10 through the upper opening 101, and the inner head assembly 2 is hidden in the accommodating cavity 10 after descending, so that the arrangement can effectively solve the problems that after the use is stopped, part of residual smoke flows back into a kitchen through the smoke suction port 201 and peculiar smell is emitted into the kitchen through oil stain attached to the smoke suction cavity 20 through the smoke suction port 201 while the smoke suction efficiency is ensured.

Referring to fig. 6, the outer head assembly 1 includes a left side plate 13, a front plate 11, a right side plate 14 and a rear plate 12 which are connected in sequence, the front plate 11 and the rear plate 12 are arranged in a front-back opposite manner, the left side plate 13 and the right side plate 14 are arranged in a left-right opposite manner, the lower end of the outer head assembly 1 is connected with a bottom plate 15, a lower opening 102 is formed in the bottom plate 15, and the lower opening 102 is located above the smoke exhaust device 6. The left side plate 13, the front plate 11 and the right side plate 14 are connected into an integral structure, the left side plate 13 is bent and formed with a left connecting edge 131, the right side plate 14 is bent and formed with a right connecting edge 141, the left connecting edge 131 and the right connecting edge 141 are oppositely arranged, and the rear plate 12 is respectively connected with the left connecting edge 131 and the right connecting edge 141; the edges of the bottom plate 15 are welded to the bottom edges of the left and right side plates 13 and 14, respectively. The inner sides of the left side plate 13 and the right side plate 14 of the outer head assembly 11 are further respectively fixed with a guide rail bracket 16 and a slide rail assembly 4 arranged on the guide rail bracket 16, one side of the slide rail assembly 4 is fixedly connected with the guide rail bracket 16, and the other side of the guide rail bracket 16 is abutted against a left side shell 23 or a right side shell 24 of the inner head assembly 2 so as to guide the movement of the inner head assembly 2, wherein the slide rail assembly 4 can be a track with a plurality of rollers or a plurality of balls. The design of the integral independent outer head assembly 1 not only ensures that the accommodating cavity 10 in the inner part has enough space to be capable of sufficiently installing the inner head assembly 2 and the lifting driving device, but also is beneficial to maintenance and cleaning in the using process and convenient to install and dismantle.

In a preferred embodiment, referring to fig. 4 and 5, the lifting drive mechanism 3 comprises a drive motor 31, a transmission rod 32 and a pair of push rod assemblies 33, and the arrangement of the push rod assemblies 33 can ensure that the lifting machine head can perfectly reach the preset working state during use, and can avoid the situation that the lifting machine head falls when a single push rod assembly 33 fails. The push rod assembly 33 comprises a push rod seat 331 and a lifting body 332, the push rod assembly 33 is inserted into the accommodating cavity 10, the push rod seat 331 is connected with the outer head assembly 1, and the lifting body 332 is connected with the inner head assembly 2. The driving motor 31 is arranged between the pair of push rod seats 331, the output end of the driving motor 31 is connected with the transmission rod 32, and the end parts of the transmission rod 32 are respectively connected with the input ends of the push rod seats 331; when the driving motor 31 drives the transmission rod 32 to rotate, the transmission rod 32 drives the lifting body 332 to move up and down relative to the push rod base 331, so that the inner head assembly 2 moves up and down in the accommodating cavity 10. In the connection mode, the outer machine head component 1 is fixed and the inner machine head component 2 moves up and down in the lifting process of the lifting machine head, so that the load of the push rod component 33 is reduced, the loss generated in the lifting process is reduced, and the service life of the lifting machine head is prolonged.

As shown in fig. 7, the inner head assembly 2 includes a left shell 23, a front shell 21, a right shell 24 and a rear shell 22 connected in sequence, a top plate 25 is disposed at the upper end of the inner head assembly 2, a smoke outlet 202 is disposed at the lower end of the inner head assembly 2, and a smoke suction port 201 is disposed on the front shell 21. When the elevator head is in the raised state, the driving motor 31 drives the inner head assembly 2 to rise, and the smoking port 201 rises to be completely higher than the front plate 11. In the present embodiment, when the inner head assembly 2 is lowered, the top plate 25 thereof is located above the upper opening 101 of the outer head assembly 11. In another embodiment, the top plate 25 of the inner head assembly 2 after being lowered is flush with or lowered below the upper opening 101 of the outer head assembly 11. The top plate 25 can effectively prevent the oil smoke sucked through the smoke suction port 201 from overflowing from above, and at the same time prevent dust and the like from falling into the lifter head during use.

In addition, in order to achieve better using effect, the inner head assembly 2 further comprises a connecting bracket, the connecting bracket is connected with the lifting body 332, and the push rod base 331 is connected with the bottom end of the outer head assembly 1. The lifting body 332 is connected with the connecting bracket relatively independently, so that the lifting machine head is convenient to detach and maintain in the using process, the structure is simpler and clearer, and the large-scale production and manufacturing are facilitated. Still include left and right pairwise side partition 26 in the inner head assembly 2, the side partition 26 welds with the left and right sides edge one-to-one of smoking mouth 201, and the side partition 26 divides the inner chamber of inner head assembly 2 into the lift chamber 29 that is located the side partition 26 outside and is located the smoking chamber 20 between the pairwise side partition 26, and the lifting body 332 runs through and sets up in lift chamber 29, and lifting body 332 and linking bridge fixed connection. In the above structure, the separation of the lifting cavity 29 and the smoking cavity 20 makes the oil smoke sucked by the lifter head difficult to contact the lifting driving device in the using process, and effectively prolongs the service life of the lifting driving device.

Referring to fig. 7, the inner head assembly 2 further includes a top partition 27, the top partition 27 is formed by extending the upper edge of the smoke suction opening 201 toward the rear shell 22, the top partition 27 is disposed between the pair of side partitions 26, the top partition 27 is attached to the pair of side partitions 26, the top partition 27 divides the inner cavity of the inner head assembly 2 into a bracket cavity located between the top partition 27 and the top plate 25, the bracket cavity is communicated with the lifting cavity 29, the smoke suction cavity 20 is a cavity with three closed surfaces and a downward opening 102, and the connecting bracket is fixed in the bracket cavity above the top partition 27. A microswitch 5 is also arranged in the lifting cavity 29 of the inner head assembly 2 and used for controlling the up-and-down movement position of the inner head assembly 2. The arrangement of the structure ensures that the smoking cavity 20 is relatively independent and has a single opening, and the lifting machine head has a simple and clear structure, can effectively avoid the oil smoke from damaging the lifting driving mechanism 3, and prolongs the service life.

As shown in fig. 8, the push rod assembly 33 further includes a screw rod 333, a bottom end of the screw rod 333 is connected to the push rod base 331, the lifting body 332 is sleeved outside the screw rod 333, and the lifting body 332 and the screw rod 333 are in screw transmission. In the embodiment, the lifting machine head adopts screw transmission, the screw transmission enables the lifting machine head to be self-locked at any time in the lifting motion process, and the lifting machine head has higher motion precision. In another embodiment, the push rod assembly 33 includes a follower with a cam, a bottom end of the follower is connected to the push rod base 331, the lifting body 332 is disposed outside the follower, and the push rod base 331 drives the cam to rotate to drive the lifting body 332 to perform lifting movement. Alternatively, in another embodiment, another structure capable of moving the lifting body 332 up and down may be used instead.

Referring to fig. 8 again, the push rod base 331 further includes an inner gear housing 3311, and an input gear 3312 and an output gear 3313 engaged with each other, the input gear 3312 and the output gear 3313 being disposed within the inner gear housing 3311; the input gear 3312 is provided with a transmission hole 33121 matching the transmission rod 32, the transmission hole 33121 may be a polygonal hole, and the output gear 3313 is provided with a connection hole 33131 connected to the screw rod 333. The bottom end of the screw rod 333 is inserted into the inner gear housing 3311 from above, the bottom end is fixedly connected with the output gear 3313, and two bearings 3314 are sleeved above the screw rod 333. The driving motor 31 drives the driving rod 32 to rotate, the driving rod 32 is inserted into the driving hole 33121, the input gear 3312 is driven to rotate synchronously, the input gear 3312 drives the output gear 3313 to rotate, and further drives the screw rod 333 to rotate relative to the push rod base 331, and further drives the lifting body 332 to move up and down along the screw rod 333. The elevator head uses a pair of straight bevel gears engaged with each other to transmit power, and an input gear 3312 is driven by a driving motor 31 to rotate to drive an output gear 3313 engaged with the input gear. The gear transmission in the push rod seat 331 with relatively small space has the advantages of compact structure, reliable work and long service life.

As shown in fig. 8 and 9, the lifting body 332 further includes a hollow sleeve 3321 and a threaded seat 3322 disposed at the bottom of the sleeve 3321, the threaded seat 3322 is in threaded connection with the screw 333, the screw 333 is inserted into the sleeve 3321, the top end of the sleeve 3321 is fixedly connected to the connecting bracket in the inner head assembly 2, a sealing plate 3323 is further fixed to the top end of the sleeve 3321, and the sealing plate 3323 is fixedly connected to the connecting bracket 28 by screws. The sleeve 3321 can effectively protect the screw 333 inside the sleeve, reduce corrosion of the screw 333 in the use process and prolong the service life. The bottom plate 15 is provided with a fixing port 103, the lower end of the push rod seat 331 is further fixed with an adapter 334, the adapter 334 is fixed at the fixing port 103, and the lifting body 332 and the screw 333 of the push rod assembly 33 penetrate into the accommodating cavity 10 through the fixing port 103. The adapter 334 is fixed to the fixing port 103 of the base plate 15 by a screw, the guide cylinder 335 is further fixed above the adapter 334, the top end of the guide cylinder 335 is provided with a guide end cover 336, the guide cylinder 335 and the guide end cover 336 are sleeved on the outer side of the lifting body 332, and the driving motor 31 is fixed to the adapter 334 by the bracket 34. The guide cylinder 335 and the guide end cover 336 are used for reducing the transverse radial clearance of the lifting body 332 in the lifting process, prolonging the service life, simplifying the structure of the lifting machine head and facilitating large-scale production and manufacturing.

In a preferred embodiment, the left shell 23 is bent to form a left fixing edge 231, the right shell 24 is bent to form a right fixing edge 241, the left fixing edge 231 and the right fixing edge 241 are oppositely arranged, and the rear shell 22 is connected to the left fixing edge 231 and the right fixing edge 241 respectively. Left side shell 23, preceding shell 21, right side shell 24 and backshell 22 formula barrel as an organic whole of interior handpiece subassembly 2, relatively independent integral type barrel design makes this lift aircraft nose convenient to detach wash the maintenance in the use, makes this structure simpler, clear simultaneously, more is favorable to large-scale production manufacturing.

Referring to fig. 9, the driving motor 31 includes a motor body 311 and a reduction gearbox 312, the motor body 311 is fixed to the outer side of the reduction gearbox 312, an output shaft 3111 of the motor body 311 is connected to an input shaft of the reduction gearbox 312, the reduction gearbox 312 is sleeved on the transmission rod 32 and can transmit torque to the transmission rod 32, and the reduction gearbox 312 includes a box body and a reduction turbine 313 arranged in the box body. The motor body 311 is fixed on the outer side of the reduction gearbox 312, so that the transmission distance can be effectively reduced, the vibration is reduced, and the transmission efficiency is increased. The box body of the reduction box 312 is sleeved outside the reduction turbine 313, so that dust, oil smoke and the like can be effectively prevented, the abrasion of external factors is reduced, and the service life is prolonged. The driving motor 31 is a speed reducing motor, the top end of the output shaft 3111 is in a worm structure, and the output shaft 3111 and the speed reducing turbine 313 are in worm transmission; the middle part of the deceleration turbine 313 is provided with a polygonal turbine hole 3131, the cross section of the part of the transmission rod 32, which is placed in the turbine hole 3131, is a polygon corresponding to the hole shape, and the transmission rod 32 may be a polygonal column as a whole, or may be a partially polygonal column, preferably a hexagonal column. The structure adopts worm transmission, the transmission ratio of the worm transmission is large, the structure is compact, the transmission is stable, no noise exists, and certain self-locking performance is realized. The driving rod 32 adopts a polygonal column structure, one end of the driving rod 32 is matched with the polygonal turbine hole 3131, the other end of the driving rod is matched with the polygonal driving hole 33121, circumferential limiting is achieved to transmit torque, the rigidity of the driving rod can be enhanced through the polygonal column structure, the driving rod is not prone to deformation, and the service life of the lifting machine head can be effectively prolonged.

As shown in fig. 10, the present invention provides a smoke evacuation device, which comprises the above-mentioned lift head, wherein the smoke evacuation device is an integrated range or a lower-row type smoke evacuation machine. The application of detachable lift aircraft nose can effectively avoid partial oil smoke to flow backward through the oil absorption mouth and get into the kitchen and give off the problem of peculiar smell in to the kitchen, the maintenance in the use of still being convenient for.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.

In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.

Claims (13)

1. An elevator head, comprising:

the outer head assembly is provided with an accommodating cavity which is communicated up and down, the top end of the accommodating cavity is provided with an upper opening, the bottom end of the accommodating cavity is provided with a lower opening, and the bottom end of the outer head assembly can be detachably arranged on the top surface of the smoke exhaust device;

the inner machine head assembly is provided with a hollow smoking cavity, the front side of the smoking cavity is provided with a smoking port, and the bottom of the smoking cavity is provided with a smoke outlet; and the number of the first and second groups,

one end of the lifting driving mechanism is connected with the outer head assembly, the other end of the lifting driving mechanism is connected with the inner head assembly, and the lifting driving mechanism can drive the inner head assembly to perform lifting movement so that the smoking port extends out of the accommodating cavity through the upper opening and can drive the inner head assembly to be hidden in the accommodating cavity; the smoke outlet is communicated with the lower opening.

2. The elevator head of claim 1, wherein the outer head assembly comprises a left side plate, a front plate, a right side plate and a rear plate which are connected in sequence, the front plate and the rear plate are arranged oppositely in a front-back direction, the left side plate and the right side plate are arranged oppositely in a left-right direction, the lower end of the outer head assembly is connected with a bottom plate, the bottom plate is provided with the lower opening, and the lower opening is positioned above the smoke exhaust device.

3. The elevator head as claimed in claim 2, wherein said left side plate, said front plate and said right side plate are connected as a single structure, said left side plate is bent to form a left connecting edge, said right side plate is bent to form a right connecting edge, said left connecting edge and said right connecting edge are oppositely disposed, and said rear plate is connected to said left connecting edge and said right connecting edge respectively; the edge of the bottom plate is welded with the bottom edges of the left side plate and the right side plate respectively.

4. The elevator head of claim 2 or 3, wherein said elevator drive mechanism comprises a drive motor, a drive rod and a pair of push rod assemblies;

the push rod assembly comprises a push rod seat and a lifting body, the push rod assembly is inserted into the accommodating cavity, the push rod seat is connected with the outer head assembly, and the lifting body is connected with the inner head assembly;

the driving motor is arranged between the pair of push rod seats, the output end of the driving motor is connected with the transmission rod, and the end part of the transmission rod is respectively connected with the input end of the push rod seat; when the driving motor drives the transmission rod to rotate, the transmission rod can drive the lifting body to move up and down relative to the push rod seat, and then the inner head assembly moves up and down in the accommodating cavity.

5. The elevator head as claimed in claim 4, wherein said inner head assembly comprises a left side casing, a front casing, a right side casing and a rear casing connected in sequence, a top plate is provided on an upper end of said inner head assembly, a lower end of said inner head assembly is opened to said smoke outlet, and said smoke outlet is opened to said front casing.

6. The elevator head as claimed in claim 5, further comprising a connecting bracket and a pair of left and right side partition cases disposed in the inner head assembly, wherein the side partition cases are connected to the left and right edges of the smoke suction port in a one-to-one correspondence, the side partition cases divide the inner cavity of the inner head assembly into an elevator cavity located outside the side partition cases and the smoke suction cavity located between the pair of side partition cases, and the elevator body is disposed in the elevator cavity in a penetrating manner; the connecting bracket is connected with the lifting body.

7. The elevator head of claim 6, wherein said inner head assembly further comprises a top bulkhead; the top partition shell is formed by extending the upper side edge of the smoking port to the rear shell, the top partition shell is arranged between the paired side partition shells, the side partition shells are welded on the left side edge and the right side edge of the smoking port in a one-to-one correspondence manner, the top partition shell is attached to the paired side partition shells, the top partition shell divides the inner cavity of the inner head assembly into a support cavity positioned between the top partition shell and the top plate, the support cavity is communicated with the lifting cavity, and the smoking cavity is a cavity with three closed surfaces and downward openings; the connecting bracket is fixed in the bracket cavity.

8. The elevator head of claim 6, wherein the push rod assembly further comprises a screw, a bottom end of the screw is connected to the push rod seat, the elevator body is sleeved outside the screw, and the elevator body and the screw are in screw transmission;

the push rod seat comprises an inner gear shell, and an input gear and an output gear which are meshed with each other, wherein the input gear and the output gear are arranged in the inner gear shell; the input gear is provided with a transmission hole matched with the transmission rod, and the output gear is provided with a connecting hole connected with the screw rod.

9. The elevator head of claim 8, wherein the elevator body comprises a hollow sleeve and a threaded seat disposed at the bottom of the sleeve, the threaded seat is in threaded connection with the screw, the screw is inserted into the sleeve, and the top end of the sleeve is fixedly connected with the connecting bracket.

10. The elevator head of claim 8, wherein the bottom plate is provided with a fixing opening, the lower end of the push rod base is further fixed with an adapter, the adapter is fixed at the fixing opening, and the elevator body and the screw of the push rod assembly penetrate into the accommodating cavity through the fixing opening.

11. The elevator head as set forth in claim 5, wherein said left side housing is bent to form a left fixing edge, said right side housing is bent to form a right fixing edge, said left fixing edge and said right fixing edge are disposed opposite to each other, and said rear housing is connected to said left fixing edge and said right fixing edge, respectively.

12. The elevator head as claimed in claim 4, wherein the driving motor comprises a motor body and a reduction gearbox, the motor body is fixed outside the reduction gearbox, an output shaft of the motor body is connected with an input shaft of the reduction gearbox, and the reduction gearbox is sleeved on the transmission rod and can transmit torque to the transmission rod.

13. A smoke evacuation device comprising a lift head as claimed in any one of claims 1 to 12, said smoke evacuation device being an integrated range or under-hood smoke evacuation device.

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