CN215837081U - Pumping mechanism and electronic cigarette with same - Google Patents

Abstract

The utility model belongs to the technical field of conveying equipment, and particularly relates to a pumping mechanism and an electronic cigarette with the same. Wherein, pumping mechanism includes: a power source; a drive assembly including an intermediate drive member and an output member; the first plunger assembly comprises a first plunger barrel and a first plunger rod, a first pump inlet and a first pump outlet are formed in the second end of the first plunger barrel, and the first pump inlet and the first pump outlet are alternately opened to pass through materials; the second plunger assembly comprises a second plunger cylinder and a second plunger rod, a second pump inlet and a second pump outlet are formed in the second end of the second plunger cylinder, and the second pump inlet and the second pump outlet are alternately opened to pass through materials; the output member carries the first plunger rod and the second plunger rod alternately to perform a pushing stroke. By the aid of the technical scheme, tobacco tar or air in the electronic cigarette can be respectively and independently pumped into the atomizing mechanism.

Description

Pumping mechanism and electronic cigarette with same

Technical Field

The utility model belongs to the technical field of conveying equipment, and particularly relates to a pumping mechanism and an electronic cigarette with the same.

Background

In the common electronic cigarette in the market at present, the electronic cigarette generally comprises a suction nozzle, a heating and atomizing mechanism communicated with the suction nozzle, a liquid storage bin for storing tobacco tar and other components. When the device is in actual use, tobacco tar in the liquid storage bin enters the heating and atomizing mechanism, air is simultaneously sent into the device from the external environment and is mixed with the tobacco tar, then the mixture is heated by the heating and atomizing mechanism to form smoke, and finally the smoke is sucked by a user through the suction nozzle. That is, the existing tobacco tar pushing device in the electronic cigarette mixes tobacco tar and air completely and then enters the atomizing mechanism to perform atomizing operation, which has become almost a natural thinking for electronic cigarette design. The electronic cigarette is designed to break through the concept of the prior art and is different from the design concept of the electronic cigarette on the market at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pumping mechanism and an electronic cigarette with the same, which realize that tobacco tar or air in the electronic cigarette is respectively and independently pumped into an atomizing mechanism.

In order to achieve the purpose, the utility model adopts the technical scheme that: a pumping mechanism comprising: a power source; the transmission assembly comprises an intermediate transmission member and an output member, wherein the power input end of the intermediate transmission member is connected with the power output end of the power source, and the output member is connected with the intermediate transmission member; the first plunger assembly comprises a first plunger barrel and a first plunger rod, the first plunger rod is provided with a first pumping end and a first connecting end, the first pumping end extends into a barrel cavity of the first plunger barrel from the first end of the first plunger barrel, the first connecting end is connected with the output member, the second end of the first plunger barrel is provided with a first pump inlet and a first pump outlet, and the first pump inlet and the first pump outlet are alternately opened to pass through materials; and a second plunger assembly comprising a second plunger barrel and a second plunger rod, the second plunger rod having a second pumping end and a second connecting end, the second pumping end extending into the barrel cavity of the second plunger barrel from the first end of the second plunger barrel, the second connecting end being connected to the output member, the second end of the second plunger barrel being open with a second pump inlet and a second pump outlet, the second pump inlet and the second pump outlet being alternately opened to pass the material; the output member drives the first plunger rod and the second plunger rod to alternately execute a pushing stroke, so that the materials are output from the corresponding first pump outlet or the second pump outlet.

Optionally, the intermediate transmission member includes a transmission screw, the power source drives the transmission screw to rotate, the transmission screw is provided with a first thread and a second thread, and the rotation directions of the first thread and the second thread are opposite; the output component comprises a first lead screw nut and a second lead screw nut, the first lead screw nut is meshed with the first thread, the second lead screw nut is meshed with the second thread, the first lead screw nut is connected with the first connecting end, and the second lead screw nut is connected with the second connecting end.

Optionally, the intermediate transmission member includes a first lead screw and a second lead screw, the first lead screw and the second lead screw are arranged in parallel, and the power source drives the first lead screw and the second lead screw to rotate simultaneously; the output member is provided with a first threaded connecting hole and a second threaded connecting hole, the first threaded connecting hole is meshed with the first lead screw, the second threaded connecting hole is meshed with the second lead screw, and the first connecting end and the second connecting end are fixed on the output member.

Optionally, the first connection end is butted against the second connection end, and the first plunger rod is coaxial with the second plunger rod, and the first lead screw and the second lead screw are symmetrically arranged relative to the coaxial line.

Optionally, the first plunger assembly further comprises a first valve and a second valve, the first valve and the second valve are respectively installed corresponding to the first pump inlet and the first pump outlet, and the first valve and the second valve alternately control the conduction of the first pump inlet and the first pump outlet; the second plunger assembly further comprises a third valve and a fourth valve, the third valve and the fourth valve are respectively installed corresponding to the second pump inlet and the second pump outlet, and the third valve and the fourth valve alternately control the conduction of the second pump inlet and the second pump outlet.

Optionally, the first valve, the second valve, the third valve and the fourth valve are all diaphragm valves, the pumping mechanism further comprises a control circuit board, and the power source is electrically connected with the control circuit board; or the first valve, the second valve, the third valve and the fourth valve are all electromagnetic control valves, the pumping mechanism further comprises a control circuit board, and the power source, the first valve, the second valve, the third valve and the fourth valve are respectively and electrically connected with the control circuit board.

Optionally, the pumping mechanism further includes a flow channel fitting, the flow channel fitting is provided with a first flow channel, a second flow channel, a third flow channel, a fourth flow channel and an output flow channel, a first port of the first flow channel is connected to the first pump inlet, a first port of the second flow channel is connected to the first pump outlet, a first port of the third flow channel is connected to the second pump inlet, a first port of the fourth flow channel is connected to the second pump outlet, a second port of the second flow channel and a second port of the fourth flow channel are both communicated with the first port of the output flow channel, the second port of the first flow channel and the second port of the third flow channel are respectively used for inputting a substance to be pumped, and the second port of the output flow channel is an output port.

Optionally, the pumping mechanism further comprises a liquid storage tank, the liquid storage tank is provided with a liquid outlet, the second port of the first flow passage is communicated with the liquid outlet, and the second port of the third flow passage is communicated to the atmosphere space;

or the pumping mechanism further comprises a liquid storage tank, the liquid storage tank is provided with two liquid outlets, the second port of the first flow channel is communicated with one of the liquid outlets, and the second port of the third flow channel is communicated with the other liquid outlet.

According to another aspect of the utility model, an electronic cigarette is provided. Specifically, this electron cigarette includes: the shell is provided with a mounting cavity and a suction nozzle opening communicated with the mounting cavity; the atomizing mechanism is arranged in the mounting cavity, and an atomizing outlet of the atomizing mechanism is communicated with the suction nozzle; and the pumping mechanism is the pumping mechanism, and the outlet of the first pump and the outlet of the second pump are both communicated to the feeding port of the atomizing mechanism.

Optionally, the electronic cigarette further comprises: the control module is arranged in the mounting cavity; the negative pressure sensor is arranged in the mounting cavity and is electrically connected with the control module, and the control module controls the atomization mechanism and the pumping mechanism to work in a matching way according to a negative pressure detection result of the negative pressure sensor; the shell is also provided with an air inlet communicated with the mounting cavity.

The utility model has at least the following beneficial effects:

the pumping mechanism disclosed by the utility model is applied to pumping materials and is applied to the electronic cigarette. During operation of the pumping mechanism, the power source is activated to provide mechanical power and the mechanical power is transmitted through the transmission assembly, the mechanical power is input by the intermediate transmission member and output by the output member, and the output member transmits the mechanical power to the first plunger rod of the first plunger assembly and the second plunger rod of the second plunger assembly respectively, so that the first plunger rod alternately performs a pushing stroke in the first plunger cylinder and the second plunger rod alternately performs a pushing stroke in the second plunger cylinder, and thus the first plunger assembly and the second plunger assembly alternately pump out the material in turn. The pumping mechanism is applied to the electronic cigarette, the pumping mechanism can be used for pumping tobacco tar and/or air, and the first plunger assembly and the second plunger assembly pump out materials sequentially and alternately, so that the tobacco tar or the air in the electronic cigarette at the moment are respectively and independently pumped, the pumping mechanism is different from the pumping mechanism for pumping mixed materials after the tobacco tar and the air are mixed in the prior art, and the design idea of the electronic cigarette is novel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of an assembly structure of a pumping mechanism according to a first embodiment of the present invention;

FIG. 2 is a front view of a pumping mechanism according to a first embodiment of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a cross-sectional view of the pumping mechanism of FIG. 3 taken along the line A-A and taken at the end of the first pumping end to the end of the push stroke;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is a cross-sectional view of the pumping mechanism of the first embodiment of the present invention as it travels from the second pumping end to the end of the push stroke;

fig. 7 is a schematic structural diagram of a first valve in the pumping mechanism according to the first embodiment of the present invention;

FIG. 8 is a cross-sectional view of the pumping mechanism of the second embodiment of the present invention as it travels from the first pumping end to the end of the push stroke;

FIG. 9 is a cross-sectional view of the pumping mechanism of embodiment two of the present invention as it travels from the second pumping end to the end of the push stroke;

figure 10 is a schematic view of the appearance of an electronic cigarette according to an embodiment of the present invention after assembly;

fig. 11 is an exploded view of fig. 10.

Wherein, in the figures, the respective reference numerals:

100. a pumping mechanism; 10. a power source; 21. an intermediate transmission member; 211. a drive screw; 212. a first thread; 213. a second thread; 22. an output member; 221. a first lead screw nut; 222. a second lead screw nut; 30. a first plunger assembly; 31. a first plunger barrel; 311. a first pump inlet; 312. a first pump outlet; 32. a first plunger rod; 321. a first pumping end; 322. a first connection end; 33. a first valve; 333. a valve body; 332. a valve plate; 34. a second valve; 40. a second plunger assembly; 41. a second plunger barrel; 411. a second pump inlet; 412. a second pump outlet; 42. a second plunger rod; 421. a second pumping end; 422. a second connection end; 43. a third valve; 44. a fourth valve; 50. a flow channel fitting; 51. a first flow passage; 52. a second flow passage; 53. a third flow path; 54. a fourth flow path; 55. an output flow channel; 60. a liquid storage tank; 61. a liquid outlet; 110. a housing; 111. a mounting cavity; 112. a mouthpiece opening; 113. an air inlet; 114. a cover body; 120. an atomization mechanism; 121. an atomization chamber; 122. an atomization outlet; 123. a heater; 130. a negative pressure sensor; 201. a Hall sensor; 202. a reduction gear box; 203. a battery; 204. a guide bar; 205. a support frame.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. 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; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 6, an embodiment of the present invention provides a pumping mechanism, specifically, the pumping mechanism includes a power source 10, a transmission assembly, a first plunger assembly 30 and a second plunger assembly 40, wherein the transmission assembly includes an intermediate transmission member 21 and an output member 22, the first plunger assembly 30 includes a first plunger cylinder 31 and a first plunger rod 32, and the second plunger assembly 40 includes a second plunger cylinder 41 and a second plunger rod 42. In the assembling process, the power input end of the intermediate transmission member 21 is connected with the power output end of the power source 10, the mechanical power output by the power source 10 is continuously transmitted backwards through the intermediate transmission member 21, the output member 22 is connected with the intermediate transmission member 21, and the intermediate transmission member 21 transmits the mechanical power to the output member 22 and outputs the mechanical power backwards. The first plunger rod 32 has a first pumping end 321 and a first connection end 322, the first pumping end 321 extends into the cavity of the first plunger barrel 31 from the first end of the first plunger barrel 31, the first pumping end 321 reciprocates in the first plunger barrel 31 (i.e. performs a pushing stroke and a sucking stroke), the first connection end 322 is connected with the output member 22, the output member 22 drives the first plunger rod 32 to reciprocate, the second end of the first plunger barrel 31 is provided with a first pump inlet 311 and a first pump outlet 312, and the first pump inlet 311 and the first pump outlet 312 are alternately opened to pass through the material. The second plunger rod 42 has a second pumping end 421 and a second connecting end 422, the second pumping end 421 extends into the cavity of the second plunger cylinder 41 from the first end of the second plunger cylinder 41, the second pumping end 421 reciprocates in the second plunger cylinder 41 (i.e. performs a pushing stroke and a sucking stroke), the second connecting end 422 is connected with the output member 22, the output member 22 drives the second plunger rod 42 to reciprocate, the second end of the second plunger cylinder 41 is provided with a second pump inlet 411 and a second pump outlet 412, and the second pump inlet 411 and the second pump outlet 412 are alternately opened to pass through the material. The output member 22 drives the first plunger rod 32 and the second plunger rod 42 to alternately perform a pushing stroke, so that the materials (which may be the same material or two different materials) are output from the corresponding first pump outlet 312 or second pump outlet 412.

The pumping mechanism disclosed by the utility model is applied to pumping materials and is applied to the electronic cigarette. During operation of the pumping mechanism, the power source 10 is activated to provide mechanical power and transmit the mechanical power through the transmission assembly, the mechanical power is input by the intermediate transmission member 21 and output by the output member 22, and the output member 22 transmits the mechanical power to the first plunger rod 32 of the first plunger assembly 30 and the second plunger rod 42 of the second plunger assembly 40 respectively, so that the first plunger rod 32 performs a pushing stroke in the first plunger cylinder 31 and the second plunger rod 42 performs a pushing stroke in the second plunger cylinder 41, and the first plunger rod 32 and the second plunger rod 42 perform the pushing stroke alternately, so that the first plunger assembly 30 and the second plunger assembly 40 pump out the material alternately in turn. When the pumping mechanism is applied to the electronic cigarette, the pumping mechanism can be used for pumping tobacco tar and/or air, and because the first plunger assembly 30 and the second plunger assembly 40 alternately pump out materials in sequence, the tobacco tar or the air in the electronic cigarette at the moment are respectively and independently pumped, which is different from the prior art that the tobacco tar and the air are mixed and then the mixed materials are pumped, and the electronic cigarette is a new design idea.

In the first embodiment, the intermediate transmission member 21 includes a transmission screw 211, and the power source 10 is a motor, and a rotating shaft of the motor drives the transmission screw 211 to rotate. The driving screw 211 is provided with a first thread 212 and a second thread 213, and the first thread 212 and the second thread 213 are opposite in rotation direction. The output member 22 includes a first lead screw nut 221 and a second lead screw nut 222, the first lead screw nut 221 is engaged with the first thread 212, and the second lead screw nut 222 is engaged with the second thread 213, that is, when the driving lead screw 211 rotates to drive the first lead screw nut 221 and the second lead screw nut 222 to respectively move linearly along the axial direction thereof, the moving directions of the first lead screw nut 221 and the second lead screw nut 222 are opposite. The first lead screw nut 221 is connected to the first connection end 322, the second lead screw nut 222 is connected to the second connection end 422, and the driving lead screw 211 rotates to drive the first lead screw nut 221 and the second lead screw nut 222 to respectively move linearly in opposite directions, that is: the first lead screw nut 221 moves upward along the central axis of the drive lead screw 211, and the second lead screw nut 222 moves downward along the central axis of the drive lead screw 211; the first lead screw nut 221 moves downward along the central axis of the drive lead screw 211, and the second lead screw nut 222 moves upward along the central axis of the drive lead screw 211.

At this time, in order to prevent the first lead screw nut 221 and the second lead screw nut 222 from rotating by the drive lead screw 211, the cross section of the cylinder chamber of the first plunger cylinder 31 is designed to be non-circular, and the cross section of the cylinder chamber of the second plunger cylinder 41 is designed to be non-circular. Alternatively, the pumping mechanism further includes a guide rod 204, specifically, the guide rod 204 is a first guide rod (not shown) and a second guide rod (not shown), respectively, a central axis of the first guide rod is parallel to a central axis of the driving screw 211, and a central axis of the second guide rod is parallel to the central axis of the driving screw 211. The first lead screw nut 221 is sleeved on the first guide rod, and the driving lead screw 211 rotates to drive the first lead screw nut 221 to reciprocate along the first guide rod; the second lead screw nut 222 is sleeved on the second guide rod, and the driving lead screw 211 rotates to drive the second lead screw nut 222 to reciprocate along the second guide rod.

Further, the pumping mechanism further comprises a reduction gear box 202, the reduction gear box 202 is provided with an input end and an output end, the input end is connected with a rotating shaft of the motor, the output end is connected with the transmission screw 211, and mechanical power output by the motor is subjected to speed reduction and torque increase through the reduction gear box 202 and then is output and transmitted to the transmission screw 211. Specifically, the reduction gearbox 202 may be a parallel axis reduction gearbox, or may be a planetary reduction gearbox.

As shown in fig. 4 to 6, the first plunger assembly 30 further includes a first valve 33 and a second valve 34, the first valve 33 and the second valve 34 are respectively installed corresponding to the first pump inlet 311 and the first pump outlet 312, and the first valve 33 and the second valve 34 alternately control the first pump inlet 311 and the first pump outlet 312 to be conducted. During the movement of the first plunger rod 32 in the first plunger barrel 31, when the push stroke is performed, the first valve 33 closes the first pump inlet 311 and the second valve 34 opens the first pump outlet 312; when the suction stroke is performed, the first valve 33 opens the first pump inlet 311, and the second valve 34 closes the first pump outlet 312. Also, as shown in fig. 4 to 6, the second plunger assembly 40 further includes a third valve 43 and a fourth valve 44, the third valve 43 and the fourth valve 44 are respectively installed corresponding to the second pump inlet 411 and the second pump outlet 412, and the third valve 43 and the fourth valve 44 alternately control the conduction of the second pump inlet 411 and the second pump outlet 412. During the movement of the second plunger rod 42 in the second plunger barrel 41, when the push stroke is performed, the third valve 43 closes the second pump inlet 411 and the fourth valve 44 opens the second pump outlet 412; when the suction stroke is performed, the third valve 43 opens the second pump inlet 411 and the fourth valve 44 closes the second pump outlet 412.

Referring to fig. 7 in combination, the first valve 33, the second valve 34, the third valve 43, and the fourth valve 44 are all diaphragm valves, specifically, the diaphragm valve includes a valve body 333 and a valve sheet 332, and the valve sheet 332 is connected to the middle of the valve body 333, as shown in fig. 7. The pumping mechanism further includes a control circuit board (not shown), the power source 10 is electrically connected to the control circuit board, the control circuit board controls the power source 10 to be powered on to provide mechanical power, during the operation of the pumping mechanism, for example, in the first plunger cylinder 31, when a pushing stroke is executed, the diaphragm valve mounted on the first pump inlet 311 is pressed on the first pump inlet 311 by the air pressure in the inner cavity of the first plunger cylinder 31, so as to close the first pump inlet 311, and accordingly, the diaphragm valve mounted on the first pump outlet 312 is pushed by the air pressure in the inner cavity of the first plunger cylinder 31 to open the first pump outlet 312; when a suction stroke is executed, and a negative pressure state relative to the atmospheric pressure is formed in the inner cavity of the first plunger cylinder 31 at the moment, the diaphragm valve arranged on the first pump inlet 311 opens the first pump inlet 311 under the action of pressure difference, and correspondingly, the diaphragm valve arranged on the first pump outlet 312 closes the first pump outlet 312 under the action of pressure difference; accordingly, in the second plunger cylinder 41, the operation of the second plunger rod 42 and the respective diaphragm valves is the same as that of the first plunger assembly 30, and will not be described again. Or, the first valve 33, the second valve 34, the third valve 43, and the fourth valve 44 are all electromagnetic control valves, the pumping mechanism further includes a control circuit board, the power source 10, the first valve 33, the second valve 34, the third valve 43, and the fourth valve 44 are respectively electrically connected to the control circuit board, at this time, each electromagnetic control valve is respectively controlled by the control circuit board according to the respective execution conditions of the first plunger rod 32 and the second plunger rod 42 (the second pump cannot be automatically opened or closed due to pressure difference), that is: in the first plunger barrel 31, when the first plunger rod 32 executes a pushing stroke, the control circuit board controls the first valve 33 to close the first pump inlet 311 and simultaneously controls the second valve 34 to open the first pump outlet 312, and when the first plunger rod 32 executes a sucking stroke, the control circuit board controls the first valve 33 to open the first pump inlet 311 and simultaneously controls the second valve 34 to close the first pump outlet 312; similarly, in the second plunger cylinder 41, the operation of the third valve 43 and the fourth valve 44 is the same as that of the first valve 33 and the second valve 34, and the description thereof is omitted.

As shown in fig. 1 to 6, the pumping mechanism further includes a flow channel fitting 50, the flow channel fitting 50 is provided with a first flow channel 51, a second flow channel 52, a third flow channel 53, a fourth flow channel 54 and an output flow channel 55, a first port of the first flow channel 51 is connected to the first pump inlet 311, a first port of the second flow channel 52 is connected to the first pump outlet 312, a first port of the third flow channel 53 is connected to the second pump inlet 411, a first port of the fourth flow channel 54 is connected to the second pump outlet 412, a second port of the second flow channel 52 and a second port of the fourth flow channel 54 are both communicated with a first port of the output flow channel 55, a second port of the first flow channel 51 and a second port of the third flow channel 53 are respectively used for inputting a substance to be pumped, and a second port of the output flow channel 55 is an output port. In this way, when the second port of the second flow passage 52 and the second port of the fourth flow passage 54 both output the same substance to be pumped (i.e. the first plunger cylinder 31 and the second plunger cylinder 41 both pump the same substance), the substances are conveyed to the same place through the second port of the output flow passage 55; when the second port of the second flow passage 52 and the second port of the fourth flow passage 54 output two different materials to be pumped respectively (i.e. the first plunger cylinder 31 and the second plunger cylinder 41 pump two different materials respectively), the two different materials may be mixed first, at this time, a mixing bin (not shown) is formed at a position where the second flow passage 52, the fourth flow passage 54 and the output flow passage 55 meet, the two different materials are input into the mixing bin from the second flow passage 52 and the fourth flow passage 54 in sequence to be mixed, and then output through the second port of the output flow passage 55 (i.e. mixed first and output second), or both the two different materials may be output in sequence through the second port of the output flow passage 55, so that the two different materials are output from the second port of the output flow passage 55 separately, and the two materials output from the second port of the output flow passage 55 are continuously conveyed to the mixing bin (not shown), the two different materials are mixed in the mixing bin (i.e. output first and then mixed).

In the first embodiment, the pumping mechanism further includes a liquid storage box 60, the liquid storage box 60 is provided with a liquid outlet 61, the second port of the first flow passage 51 is communicated with the liquid outlet 61, and the second port of the third flow passage 53 is communicated to the atmosphere. At this time, the first plunger cylinder 31 is used for pumping the liquid, and the second plunger cylinder 41 is used for pumping the air, and the liquid and the air are respectively output from the second port of the output flow passage 55, and then gas-liquid mixing is performed.

The pumping mechanism of the first embodiment further includes a hall sensor 201 and a control device (when the first valve 33, the second valve 34, the third valve 43, and the fourth valve 44 are all electromagnetic control valves, the control device and the control circuit board are the same component with a control function, when the first valve 33, the second valve 34, the third valve 43, and the fourth valve 44 are all membrane valves, the control circuit board is the control device, wherein the control device may be, for example, an MCU chip, a PLC chip, etc.), the hall sensor 201 is installed on the power source 10, the hall sensor 201 is used for sensing the rotation speed of the rotating shaft of the motor, the hall sensor 201 is electrically connected with the control device, the hall sensor 201 transmits the sensed rotation speed of the rotating shaft to the control device, and then the control device controls and adjusts the rotation speed of the rotating shaft of the motor according to the work requirement, thereby achieving the purpose of accurate output.

In one embodiment, the pumping mechanism further includes a support frame 205, and when the pumping mechanism is assembled, the support frame 205 serves as a support base, and the power source 10, the transmission assembly, the first plunger assembly 30, the second plunger assembly 40, the flow passage fitting 50, and the reservoir 60 are assembled and fixed on the support frame 205.

As shown in fig. 8 and 9, it shows a schematic structural diagram of a pumping mechanism according to the second embodiment of the present invention. The pumping mechanism of the second embodiment has the following differences compared to the first embodiment.

In the second embodiment, the pumping mechanism further includes a liquid storage box 60, the liquid storage box 60 is provided with two liquid outlets 61, the second port of the first flow passage 51 is communicated with one of the liquid outlets 61, and the second port of the third flow passage 53 is communicated with the other liquid outlet 61. In the second embodiment, the first plunger cylinder 31 and the second plunger cylinder 41 alternately pump the liquid stored in the liquid storage tank 60.

Compared with the pumping mechanism of the first embodiment, except for the above differences, the pumping mechanism of the second embodiment has the same structure, and thus the description thereof is omitted.

Specifically, the present invention also provides a pumping mechanism (not shown) of the third embodiment, which has the following differences compared to the pumping mechanism of the first embodiment.

In the pumping mechanism of the third embodiment, the intermediate transmission member 21 includes a first lead screw and a second lead screw, the first lead screw and the second lead screw are arranged in parallel, the power source 10 drives the first lead screw and the second lead screw to rotate simultaneously, the output member 22 is provided with a first threaded connection hole and a second threaded connection hole, the first threaded connection hole is engaged with the first lead screw, the second threaded connection hole is engaged with the second lead screw, and the first connection end 322 and the second connection end 422 are fixed on the output member 22. In the third embodiment, one lead screw nut may be used, or two lead screw nuts may be used. When two lead screw nuts are adopted for assembly, each lead screw nut is provided with a threaded hole (namely a first thread and a second thread), and the first plunger rod 32 and the second plunger rod 42 are respectively connected with one lead screw nut; when a lead screw nut is used for assembly, two threaded holes (i.e., a first thread and a second thread) are formed in the lead screw nut, and the first plunger rod 32 and the second plunger rod 42 are both connected to the lead screw nut.

And, the first connection end 322 is butted with the second connection end 422, and the first plunger rod 32 is coaxial with the second plunger rod 42, and the first lead screw and the second lead screw are symmetrically arranged with respect to the coaxial line, at this time, the first plunger cylinder 31 and the second plunger cylinder 41 alternately pump the substance to be pumped.

Compared with the pumping mechanism of the first embodiment, except for the above differences, the pumping mechanism of the third embodiment has the same structure, and thus, the description thereof is omitted.

According to another aspect of the utility model, an electronic cigarette is provided. As shown in fig. 10 and 11, the electronic cigarette includes a housing 110, an atomizing mechanism 120, and a pumping mechanism 100, where the housing 110 has a mounting cavity 111 and a nozzle opening 112 communicating with the mounting cavity 111, actually, the housing 110 includes a housing main body and a cover body 114, the cover body 114 covers an opening end of the housing main body to form the mounting cavity 111, and the nozzle opening 112 is opened on the cover body 114. The atomizing mechanism 120 is installed in the installation cavity 111, the battery 203 provides electric energy for the electronic cigarette to work, the atomizing mechanism 120 includes an atomizing cavity 121 and a heater 123, an atomizing outlet 122 communicated with the suction nozzle port 112 is formed in the atomizing cavity 121, the heater 123 is installed in the atomizing cavity 121, the pumping mechanism 100 is the pumping mechanism, and the first pump outlet 312 and the second pump outlet 412 are both communicated to a feeding port of the atomizing mechanism 120.

When the pumping mechanism provided by the utility model is applied to the electronic cigarette, the pumping mechanism can be used for pumping tobacco tar and/or air, and the first plunger assembly 30 and the second plunger assembly 40 pump out materials in turn and alternately, so that the tobacco tar or the air in the electronic cigarette is respectively and independently pumped, which is different from the prior art that the tobacco tar and the air are mixed and then the mixed materials are pumped, and is a new design idea of the electronic cigarette.

As shown in fig. 11, the electronic cigarette further includes a control module (not shown) and a negative pressure sensor 130, the control module is installed in the installation cavity 111, the control module and the control device of the pumping mechanism may be the same component with a control function, or may be two components with control functions that are independent from each other (at this time, the control module controls the control device), the negative pressure sensor 130 is installed in the installation cavity 111, the negative pressure sensor 130 is electrically connected to the control module, the control module controls the atomizing mechanism 120 to cooperate with the pumping mechanism according to a negative pressure detection result of the negative pressure sensor 130, and the housing main body further has an air inlet 113 communicated with the installation cavity 111. When a user of the electronic cigarette sucks, negative pressure is formed in the mounting cavity 111, although outside air can enter the mounting cavity 111 from the air inlet holes 113, the speed of sucking the air in the mounting cavity 111 by the user is far higher than the speed of entering the air in the mounting cavity 111 from the air inlet holes 113, and therefore negative pressure is formed in the mounting cavity 111. At this time, the negative pressure sensor 130 detects that a negative pressure is formed in the mounting cavity 111 and transmits a signal to the control module, and then the control module controls the pumping mechanism to pump the tobacco tar and the air, the tobacco tar and the air are mixed in the atomizing mechanism 120 and are heated and atomized, and then the atomized smoke is sucked by the user from the suction nozzle 112.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A pumping mechanism, comprising:

a power source (10);

a transmission assembly comprising an intermediate transmission member (21) and an output member (22), a power input end of the intermediate transmission member (21) being connected with a power output end of the power source (10), the output member (22) being connected with the intermediate transmission member (21);

a first plunger assembly (30), the first plunger assembly (30) comprising a first plunger barrel (31) and a first plunger rod (32), the first plunger rod (32) having a first pumping end (321) and a first connection end (322), the first pumping end (321) extending from the first end of the first plunger barrel (31) into the barrel cavity of the first plunger barrel (31), the first connection end (322) being connected with the output member (22), the second end of the first plunger barrel (31) having a first pump inlet (311) and a first pump outlet (312), the first pump inlet (311) and the first pump outlet (312) being alternately opened to pass through the material; and

a second plunger assembly (40), the second plunger assembly (40) comprising a second plunger barrel (41) and a second plunger rod (42), the second plunger rod (42) having a second pumping end (421) and a second connection end (422), the second pumping end (421) protruding from the first end of the second plunger barrel (41) into a barrel cavity of the second plunger barrel (41), the second connection end (422) being connected to the output member (22), the second end of the second plunger barrel (41) being open with a second pump inlet (411) and a second pump outlet (412), the second pump inlet (411) and the second pump outlet (412) being alternately open to pass material;

the output member (22) carries the first plunger rod (32) and the second plunger rod (42) alternately to perform a push stroke, causing material to be output from the corresponding first pump outlet (312) or second pump outlet (412).

2. The pumping mechanism of claim 1,

the middle transmission component (21) comprises a transmission lead screw (211), the power source (10) drives the transmission lead screw (211) to rotate, a first thread (212) and a second thread (213) are arranged on the transmission lead screw (211), and the rotating directions of the first thread (212) and the second thread (213) are opposite;

the output member (22) comprises a first lead screw nut (221) and a second lead screw nut (222), the first lead screw nut (221) is engaged with the first thread (212), the second lead screw nut (222) is engaged with the second thread (213), the first lead screw nut (221) is connected with the first connection end (322), and the second lead screw nut (222) is connected with the second connection end (422).

3. The pumping mechanism of claim 1,

the intermediate transmission member (21) comprises a first lead screw and a second lead screw which are arranged in parallel, and the power source (10) drives the first lead screw and the second lead screw to rotate simultaneously;

the output member (22) is provided with a first threaded connecting hole and a second threaded connecting hole, the first threaded connecting hole is meshed with the first lead screw, the second threaded connecting hole is meshed with the second lead screw, and the first connecting end (322) and the second connecting end (422) are fixed on the output member (22).

4. The pumping mechanism of claim 3,

the first connection end (322) interfaces with the second connection end (422) and the first plunger rod (32) is coaxial with the second plunger rod (42), the first lead screw and the second lead screw being symmetrically arranged with respect to the coaxial line.

5. Pumping mechanism according to any of claims 1 to 4,

the first plunger assembly (30) further comprises a first valve (33) and a second valve (34), the first valve (33) and the second valve (34) are respectively installed corresponding to the first pump inlet (311) and the first pump outlet (312), and the first valve (33) and the second valve (34) alternately control the first pump inlet (311) and the first pump outlet (312) to be communicated;

the second plunger assembly (40) further comprises a third valve (43) and a fourth valve (44), the third valve (43) and the fourth valve (44) are respectively installed corresponding to the second pump inlet (411) and the second pump outlet (412), and the third valve (43) and the fourth valve (44) alternately control the conduction of the second pump inlet (411) and the second pump outlet (412).

6. The pumping mechanism of claim 5,

the first valve (33), the second valve (34), the third valve (43) and the fourth valve (44) are all diaphragm valves, the pumping mechanism further comprises a control circuit board, and the power source (10) is electrically connected with the control circuit board;

or, the first valve (33), the second valve (34), the third valve (43) and the fourth valve (44) are all electromagnetic control valves, the pumping mechanism further comprises a control circuit board, and the power source (10), the first valve (33), the second valve (34), the third valve (43) and the fourth valve (44) are respectively electrically connected with the control circuit board.

7. Pumping mechanism according to any of claims 1 to 4,

the pumping mechanism further comprises a flow channel fitting (50), the flow channel fitting (50) is provided with a first flow channel (51), a second flow channel (52), a third flow channel (53), a fourth flow channel (54) and an output flow channel (55), a first port of the first flow channel (51) is connected with the first pump inlet (311), a first port of the second flow channel (52) is connected with the first pump outlet (312), a first port of the third flow channel (53) is connected with the second pump inlet (411), a first port of the fourth flow channel (54) is connected with the second pump outlet (412), a second port of the second flow channel (52) and a second port of the fourth flow channel (54) are both communicated with the first port of the output flow channel (55), and a second port of the first flow channel (51) and a second port of the third flow channel (53) are respectively used for inputting a substance to be pumped, and the second port of the output flow channel (55) is an output port.

8. The pumping mechanism of claim 7,

the pumping mechanism further comprises a liquid storage tank (60), the liquid storage tank (60) is provided with a liquid outlet (61), a second port of the first flow passage (51) is communicated with the liquid outlet (61), and a second port of the third flow passage (53) is communicated to the atmosphere space;

or, the pumping mechanism further comprises a liquid storage tank (60), the liquid storage tank (60) is provided with two liquid outlets (61), the second port of the first flow passage (51) is communicated with one of the liquid outlets (61), and the second port of the third flow passage (53) is communicated with the other liquid outlet (61).

9. An electronic cigarette, comprising:

the air cleaner comprises a shell (110), wherein the shell (110) is provided with a mounting cavity (111) and a suction nozzle (112) communicated with the mounting cavity (111);

the atomizing mechanism (120), the atomizing mechanism (120) is installed in the installation cavity (111), and an atomizing outlet (122) of the atomizing mechanism (120) is communicated with the nozzle opening (112); and

a pumping mechanism (100), the pumping mechanism (100) being as claimed in any one of claims 1 to 8, the first pump outlet (312) and the second pump outlet (412) both being connected to a feed inlet of the atomizing mechanism (120).

10. The electronic cigarette of claim 9,

the electronic cigarette further comprises:

a control module mounted within the mounting cavity (111);

the negative pressure sensor (130) is installed in the installation cavity (111), the negative pressure sensor (130) is electrically connected with the control module, and the control module controls the atomizing mechanism (120) and the pumping mechanism to work in a matched mode according to a negative pressure detection result of the negative pressure sensor (130);

the shell (110) is also provided with an air inlet hole (113) communicated with the mounting cavity (111).

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