WO2022100369A1

WO2022100369A1 - Rotary oiling device and assembling method therefor

Info

Publication number: WO2022100369A1
Application number: PCT/CN2021/124306
Authority: WO
Inventors: 赵贯云; 陈强
Original assignee: 深圳市吉迩科技有限公司
Priority date: 2020-11-16
Filing date: 2021-10-18
Publication date: 2022-05-19
Also published as: CN112493562A

Abstract

A rotary oiling device, comprising: an oil bin (1) having an oil cavity (11), a base (2), air channel silica gel (3) mounted on the base (2), a pressure relief hole (31) and an oil intake groove (32) provided on the air channel silica gel (3), an oiling tube (4) mounted within the air channel silica gel (3), a pressure relief channel (41) and an oiling channel (42) provided on the oiling tube (4), and a handle (5) mounted on the oiling tube (4); and further disclosed is an assembling method comprising the rotary oiling device. By providing both the oiling channel (42) and the pressure relief channel (41) within the oiling tube (4), the problem of balancing the internal and external pressure of the oil bin (1) during oiling is solved. In addition, the connection and disconnection of the oiling channel (42) and the pressure relief channel (41) may be achieved by rotating the oiling tube (4). Compared with conventional oiling plug structures, more of the space that is occupied by the structure may be reduced while ensuring the sealing performance of the oil cavity (11); and the handle (5) for controlling the oiling pipe (4) may be hidden in a containing groove (21), so that children mistakenly opening the device may be prevented and collisions are prevented.

Description

A rotary oil injection device and its assembly method

This application claims the priority of the Chinese patent application filed on November 16, 2020 with the application number 202011279319.4 and the invention title is "a rotary oil injection device and its assembly method", the entire contents of which are incorporated herein by reference invention.

technical field

The application belongs to the field of aerosol generating devices, and particularly relates to a rotary oil injection device and an assembling method thereof.

Background technique

As the harm of traditional cigarettes is gradually recognized by the public, electronic cigarettes have been more and more accepted by smoking consumer groups, and have gradually expanded their market share. The essence of the electronic cigarette is an aerosol generating device, which is connected to the pod (also known as the atomizer) through the host. , thereby producing an aerosol for the user to inhale.

In the process of using electronic cigarettes, it is necessary to refill the oil tank frequently, but the current products only use ordinary plug-in oil filling plugs for oil filling, which are easy to be corroded and aged by e-cigarette oil during normal use, and the sealing performance is not good. , children are easy to open by mistake, and in the process of oil change, because the internal pressure of the cigarette oil in the oil chamber is larger than the external pressure, there is a certain pressure difference, so that there is a smoke oil spray when the oil plug is opened. In addition, some oil plugs will be made too large in length and diameter in order to ensure their sealing performance, and their structure will take up a large space, resulting in Cannot be applied to smaller products.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a rotary oil injection device and an assembly method thereof, so as to overcome the aging and poor sealing performance of the oil plug in the existing aerosol oil injection device, the inability to balance the pressure difference inside and outside the oil cavity during oil injection, and the large occupied space of the structure, Defects that cannot be applied to smaller products.

In order to achieve the above purpose, the present application provides a rotary oil injection device, comprising an oil tank with an oil cavity, a base connected with the oil tank and sealing the oil cavity, and an airway silica gel is provided on the base, so The airway silica gel is provided with a pressure relief hole and an oil inlet groove that communicate with the oil cavity, and a rotatable oil injection pipe is arranged in the airway silica gel, and the oil injection pipe is provided with a connection with the outside of the base. When the oil injection pipe rotates, the pressure relief channel can be communicated with or disconnected from the pressure relief hole, and the oil injection channel can be communicated with or disconnected from the oil inlet groove. .

Preferably, in the above technical solution, the pressure relief channel includes a pressure relief groove provided on the side of the oil injection pipe; the oil injection channel includes an oil injection hole provided in the oil injection pipe and an oil injection hole provided on the side of the oil injection pipe. An oil inlet hole, the oil injection hole is communicated with the oil inlet hole.

Preferably, in the above technical solution, when the pressure relief groove and the pressure relief hole are aligned or staggered with each other, the pressure relief passage and the pressure relief hole are connected or disconnected from each other; When the hole and the oil inlet groove are aligned with each other or staggered, the oil injection channel and the oil inlet groove are connected or disconnected from each other.

Preferably, in the above technical solution, when the pressure relief passage and the pressure relief hole are in communication with each other, the oil injection passage and the oil inlet groove are also in communication with each other, and the oil injection pipe is in the open position; When disconnected from the oil inlet groove, the oil injection channel and the oil inlet groove are also disconnected from each other, and the oil injection pipe is in a closed position.

Preferably, in the above technical solution, a handle is fixed on the oil injection pipe, and a receiving groove corresponding to the handle is provided on the base. When the oil injection pipe is in the open position, the handle The handle is located outside the accommodating groove, and the handle is located in the accommodating groove when the oil filling pipe is in the closed position.

Preferably, in the above technical solution, the base is provided with a fixing seat, the fixing seat is provided with a fixing seat hole, and the fixing seat hole includes an opposite first end and a second end, and the first end is connected to the fixed seat hole. The accommodating grooves are communicated with each other, and the second end extends into the oil cavity.

Preferably, in the above technical solution, the airway silica gel is fixed in the fixing seat hole, the airway silica gel includes an opposite third end and a fourth end, and the third end extends to the accommodating groove Inside, the fourth end extends into the oil cavity, and the oil inlet groove is provided at the fourth end; the airway silica gel is provided with an oil injection pipe installation hole, and the oil injection pipe installation hole penetrates the The third end and the fourth end are communicated with the oil inlet groove; the pressure relief hole is arranged on the side surface of the airway silica gel and communicated with the oil pipe installation hole.

Preferably, in the above technical solution, the oil injection pipe is sleeved in the oil pipe installation hole in a way of interference fit, and when the oil injection pipe is in the closed position, the hole wall of the oil pipe installation hole can The pressure relief groove and the oil inlet hole are sealed.

Preferably, in the above technical solution, the outer wall of the oil injection pipe is provided with a locking convex ring, and the hole wall of the oil pipe installation hole is provided with a locking groove corresponding to the locking convex ring.

In order to solve the above problems, on the other hand, the present application also provides a method for assembling a rotary oil injection device, including a rotary oil injection device for an aerosol generating device, and the rotary oil injection device includes an oil tank provided with an oil cavity, and the rotary oil injection device is provided with an oil chamber. The oil tank is connected to and seals the base of the oil cavity, the base is provided with an airway silica gel, and the airway silica gel is provided with a pressure relief hole and an oil inlet groove that communicate with the oil cavity. The silicone is provided with a rotatable oil injection pipe, and the oil injection pipe is provided with a pressure relief channel and an oil injection channel that communicate with the outside of the base. When the oil injection pipe rotates, the pressure relief channel can be connected with the The pressure relief holes are connected or disconnected with each other, and the oil injection channel can be connected or disconnected from the oil inlet groove;

The assembling method of the rotary oil injection device comprises the following steps:

Install the airway silica gel: install the airway silica gel on the base;

Install the oil injection pipe: install the oil injection pipe in the airway silicone with interference fit, and clamp it tightly, and then turn the oil injection pipe to the open position;

Install the handle: install the handle on the oil filling pipe with an interference fit, and make the handle outside the accommodating groove;

Assembling the base: Connect the base and the oil tank together by ultrasonic welding.

Compared with the prior art, the present application has the following beneficial effects:

1. The oil injection pipe in this application is provided with an oil injection channel and a pressure relief channel at the same time. When the oil injection channel is opened, the pressure in the oil cavity can also be released, so as to keep the pressure inside and outside the oil tank balanced and avoid the ejection of smoke oil. Or a situation where oil filling is difficult occurs.

2. The application realizes the connection and disconnection of the oil injection channel and the pressure relief channel by the rotation of the oil injection pipe, and the oil inlet hole and the pressure relief groove can be sealed by interference with the inner wall of the oil injection pipe installation hole in the airway silica gel. The mechanism of the traditional oil filling plug not only occupies a small space, but also ensures better sealing performance.

3. The application can open or close the oil filling channel and the pressure relief channel by turning the handle during use. When the oil filling channel is closed, the handle can be hidden in the accommodating groove, which can not only prevent children from opening by mistake, but also play an anti-collision effect. effect.

Description of drawings

FIG. 1 is an exploded view of the rotary oil injection device of the present application.

2 is a partial cross-sectional view of the rotary oil injection device when the pressure relief passage and the oil injection passage communicate with each other.

3 is a partial cross-sectional view of the rotary oil injection device when the pressure relief passage and the oil injection passage are disconnected.

Figure 4 is a perspective cutaway view of the airway silicone.

Fig. 5 is a perspective cutaway view of an oil injection pipe.

Figures 6(a) and 6(b) are cross-sectional views of the oil injection pipes of the two types of pressure relief grooves, respectively.

FIG. 7 is a schematic flowchart of a method for assembling a rotary oil injection device.

Description of main reference signs:

1-Oil tank, 11-Oil cavity, 12-Cavity mouth;

2-base, 21-accommodating groove, 22-fixed seat, 23-fixed seat hole, 24-first end, 25-second end, 26-gap;

3- Airway silica gel, 31- Pressure relief hole, 32- Oil inlet groove, 33- Oil filling pipe installation hole, 34- Third end, 35- Fourth end, 36- Card groove, 37- Sealing convex ring;

4- oil filling pipe, 41- pressure relief channel, 411- pressure relief groove, 42- oil filling channel, 421- oil filling hole, 422- oil inlet hole, 43- locking convex ring;

5-Handle.

Detailed ways

The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

As shown in FIGS. 1 to 5 , the rotary oil filling device in this embodiment includes: an oil tank 1 , an oil cavity 11 , a cavity opening 12 , a base 2 , an accommodating groove 21 , a fixing seat 22 , a fixing seat hole 23 , a first end 24, second end 25, gap 26, airway silicone 3, pressure relief hole 31, oil inlet groove 32, oil filling pipe mounting hole 33, third end 34, fourth end 35, card groove 36, sealing convex ring 37, Oil filling pipe 4 , pressure relief passage 41 , pressure relief groove 411 , oil filling passage 42 , oil filling hole 421 , oil inlet hole 422 , locking convex ring 43 , handle 5 .

The oil tank 1 is provided with an oil cavity 11 containing e-liquid, a cavity 12 leading to the oil cavity 11 is opened on the top of the oil tank 1, the bottom of the base 2 is connected with the top of the oil tank 1 by ultrasonic welding, and The oil cavity 11 is sealed, the bottom of the base 2 is provided with a fixed seat 22, the fixed seat 22 is located on one side of the center of the base 2 and extends to the interior of the oil cavity 11; a accommodating groove 21 is opened on the top of the base 2, the One side of the accommodating groove 21 extends outward from the side surface of the base 2, and a gap 26 is formed on the side surface of the base 2; the fixing seat hole 23 includes opposite first ends 24 and second ends 25, wherein the first end 24 extends into the accommodating groove 21, and the second end 25 extends into the oil cavity 11; the airway silica gel 3 includes an opposite third end 34 and a fourth end 35, the third end 34 is sleeved in the fixing seat hole 23, The side of the end 34 is provided with a sealing convex ring 37. The sealing convex ring 37 can be sealed by interference with the hole wall of the fixing seat hole 23. The third end 34 extends all the way into the accommodating groove 21, and the fourth end 35 extends to the Inside the oil cavity 11; an oil injection pipe installation hole 33 is arranged in the airway silica gel 3, the oil injection hole installation hole 33 penetrates the third end 34 and the fourth end 35, and an annular ring is provided on the inner side wall of the oil injection installation hole 33 The fourth end 35 is provided with an oil inlet groove 32, the center of the oil inlet groove 32 coincides with the axis of the oil injection installation hole 33, and the width of the oil inlet groove 32 is smaller than the diameter of the oil injection installation hole 33, and the oil inlet groove 32 The length is greater than the diameter of the oil injection installation hole 33; that is, both ends of the oil inlet groove 32 extend outward from both sides of the oil injection installation hole 33; two pressure relief holes 31 are symmetrically opened on the side of the air inlet silica gel 3, and each pressure relief hole 31 is provided. The holes 31 are respectively communicated with the installation holes 33 of the oil injection pipe.

An oil filling hole 421 is provided in the center of the oil filling pipe 4 . One end of the oil filling hole 421 extends outward from one end of the oil filling pipe 4 . Two oil inlet holes 422, and each oil inlet hole 422 is communicated with the oil injection hole 421; two pressure relief grooves 411 are symmetrically opened on the side wall of the oil injection pipe 4, and the direction of each pressure relief groove 411 is the same as the direction of the oil injection hole 421. The length direction of the oil filling pipe 4 is parallel, and one end of the pressure relief groove 411 extends outward from one end of the oil filling pipe 4; The oil injection pipe 4 is inserted into the oil injection pipe installation hole 33 , and the outer side wall of the oil injection pipe installation hole 33 has an interference fit with the inner wall of the hole of the oil injection pipe installation hole 33 . Rotate in the oil pipe installation hole 33; and when the oil injection pipe 4 is installed in the oil injection pipe installation hole 33, one end thereof protrudes outward from the third end 34, and the other end of the pressure relief groove 411 is connected to the two sides of the airway silica gel 3. The height positions of the pressure relief holes 31 correspond to each other, the other end of the oil injection pipe 4 protrudes from the end of the oil injection pipe installation hole 33 and is located in the oil inlet groove 32 , and the positions of the two oil inlet holes 422 are just with the oil inlet groove 32 As shown in Figure 6(a), both sides of the pressure relief groove 411 extend outward from the outer side of the oil injection pipe 4 respectively, so that the pressure relief groove 411 forms two cut surfaces on the outer side of the oil injection pipe 4 , a pressure relief channel 41 is formed between the pressure relief groove 411 and the inner wall of the oil injection pipe installation hole 33 ; The upward position is the same; the oil filling hole 421 and the two oil inlet holes 422 together constitute the oil filling passage 42; during the rotation of the oil filling pipe 4, when the position of the pressure relief groove 411 and the pressure relief hole 31 on the airway silica gel 3 face each other At timing, the pressure relief passage 41 is communicated, so that the oil chamber 11 and the outside of the oil tank 1 communicate with each other. When the pressure relief groove 411 is rotated to the inner wall of the oil injection pipe installation hole 33, the pressure relief passage 41 is filled with oil and installed. The inner side wall of the hole 33 is sealed, so that the oil chamber 11 is disconnected from the outside of the oil tank 1; when the oil inlet hole 422 and the two ends of the oil inlet groove 32 on the air channel silica gel 3 are aligned with each other, the oil injection channel 42 is connected. , so that the oil chamber 11 and the outside of the oil tank 1 are communicated with each other. When the oil inlet hole 422 is turned to be opposite to the inner wall of the oil injection pipe installation hole 33, the oil injection channel 42 is disconnected, so that the oil chamber 11 and the oil The external phase of the bin 1 is disconnected; since the pressure relief groove 411 corresponds to the position of the oil inlet hole 422, during the rotation of the oil injection pipe 4, the connection and disconnection of the pressure relief passage 41 and the oil injection passage 42 are performed simultaneously.

In addition, as shown in FIG. 6( b ), there is another embodiment of the pressure relief groove 411 in this embodiment. The pressure relief groove 411 is recessed to the inside of the side surface of the oil injection pipe 4 to form a recessed groove body, and The width of the groove body is not less than the diameter of the pressure relief hole 31 .

One end of the oil filling pipe 4 is fixedly connected with one end of the handle 5, the other end of the handle 5 can be received in the accommodating groove 21, and the installation angle of the handle 5 has corresponding requirements, that is, it needs to be satisfied, when the other end of the handle 5 is retracted When placed in the accommodating groove, the pressure relief hole 31 and the pressure relief groove 411 can be staggered from each other, and the oil inlet hole 422 and the oil inlet groove 32 can also be staggered from each other, so that the pressure relief passage 41 and the oil filling passage 42 are closed at the same time; when the handle 5 When the other end of the valve is rotated 90 degrees, the handle 5 can be rotated to the outside of the oil filling pipe 4. At this time, the pressure relief hole 31 and the pressure relief groove 411 can be aligned with each other, and the oil inlet hole 422 and the oil inlet groove 32 also face each other. Positive, so that the pressure relief passage 41 and the oil filling passage 42 are opened at the same time, and the interior of the oil chamber 11 can be filled with oil through the pressure relief passage 41 .

As shown in FIG. 7 , this embodiment also discloses a method for assembling a rotary oil injection device, including the above-mentioned rotary oil injection device, and the specific steps are as follows:

Install the airway silica gel: insert the third end 34 of the airway silica gel 3 into the fixing seat hole 23, and assemble the airway silica gel 3 and the base 2 together;

Install the oil filling pipe: insert the oil filling pipe 4 into the oil filling pipe installation hole 33 on the airway silica gel 3, make the locking convex ring 43 snap into the groove 36, and then turn the oil filling pipe to the open position;

Install the handle: install the handle 5 on the oil filling pipe 4 through interference fit, and make the swing end of the handle 5 outside the accommodating groove 21;

Assembling the base: Fasten the bottom of the base 2 with the top of the oil tank 1, and then connect them together by ultrasonic welding.

To sum up, the present application solves the function of balancing the internal and external pressures of the oil silo during oil filling by arranging the oil filling passage and the pressure relief passage in the oil filling pipe at the same time; and the communication between the oil filling passage and the pressure relief passage can be realized by rotating the oil filling pipe. Compared with the traditional oil filling plug structure, it can save the space occupied by the structure while ensuring the sealing of the oil cavity; the handle for controlling the oil filling pipe can be hidden in the accommodating groove, which can prevent children from accidentally opening it and prevent impact.

The foregoing descriptions of specific exemplary embodiments of the present application have been presented for purposes of illustration and description. These descriptions are not intended to limit the application to the precise form disclosed, and obviously many changes and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described for the purpose of explaining certain principles of the application and their practical applications, to thereby enable one skilled in the art to make and utilize various exemplary embodiments and various different aspects of the application. Choose and change. The scope of this application is intended to be defined by the claims and their equivalents.

Claims

A rotary oil injection device is used for an aerosol generating device, comprising an oil tank with an oil cavity, a base connected with the oil tank and sealing the oil cavity, an air channel silica gel is arranged on the base, and the gas The silica gel is provided with a pressure relief hole and an oil inlet groove that communicate with the oil cavity, and a rotatable oil injection pipe is arranged in the air channel silica gel, and the oil injection pipe is provided with a rotatable oil injection pipe which is communicated with the outside of the base. The pressure relief passage and the oil injection passage, when the oil injection pipe is rotated, the pressure relief passage can be communicated with or disconnected from the pressure relief hole, and the oil injection passage can be communicated with or disconnected from the oil inlet groove.
The rotary oil injection device according to claim 1, wherein the pressure relief passage comprises a pressure relief groove provided on the side of the oil injection pipe; the oil injection passage comprises an oil injection hole provided in the oil injection pipe and an oil injection hole provided in the oil injection pipe. An oil inlet hole on the side of the oil injection pipe, the oil injection hole is communicated with the oil inlet hole.
The rotary oil filling device according to claim 2, wherein when the pressure relief groove and the pressure relief hole are aligned with or staggered with each other, the pressure relief passage and the pressure relief hole are connected or disconnected from each other; When the oil inlet hole and the oil inlet groove are aligned or staggered with each other, the oil injection passage and the oil inlet groove are connected or disconnected from each other.
The rotary oil injection device according to claim 3, wherein when the pressure relief passage and the pressure relief hole communicate with each other, the oil injection passage and the oil inlet groove are also in communication with each other, and the oil injection pipe is in an open position; When the oil injection channel and the oil inlet groove are disconnected from each other, the oil injection channel and the oil inlet groove are also disconnected from each other, and the oil injection pipe is located in the closed position.
The rotary oil filling device according to claim 4, wherein a handle is fixed on the oil filling pipe, and an accommodating groove corresponding to the handle is formed on the base, and when the oil filling pipe is in the open position When the handle is located outside the accommodating groove, when the oil filling pipe is located in the closed position, the handle is located in the accommodating groove.
The rotary oiling device according to claim 5, wherein the base is provided with a fixing seat, the fixing seat is provided with a fixing seat hole, and the fixing seat hole comprises an opposite first end and a second end, the The first end communicates with the accommodating groove, and the second end extends into the oil cavity.
The rotary oil injection device according to claim 6, wherein the airway silica gel is fixed in the fixing seat hole, the airway silica gel comprises an opposite third end and a fourth end, and the third end extends to In the accommodating groove, the fourth end extends into the oil cavity, and the oil inlet groove is provided at the fourth end; the air channel silica gel is provided with an oil injection pipe installation hole, and the oil injection pipe is installed The hole runs through the third end and the fourth end and communicates with the oil inlet groove; the pressure relief hole is arranged on the side surface of the airway silica gel and communicated with the oil pipe installation hole.
The rotary oil injection device according to claim 7, wherein the oil injection pipe is sleeved in the oil pipe installation hole in an interference fit manner, and when the oil injection pipe is in the closed position, the oil pipe installation hole The hole wall can seal the pressure relief groove and the oil inlet hole.
The rotary oil injection device according to claim 8, wherein the outer wall of the oil injection pipe is provided with a locking convex ring, and the hole wall of the oil pipe installation hole is provided with a locking groove corresponding to the locking convex ring.
A method for assembling a rotary oil injection device, comprising a rotary oil injection device for an aerosol generating device, the rotary oil injection device comprising an oil tank provided with an oil cavity, a base connected to the oil tank and sealing the oil cavity, so The base is provided with an airway silica gel, the airway silica gel is provided with a pressure relief hole and an oil inlet groove that communicate with the oil cavity, and a rotatable oil injection pipe is arranged in the airway silica gel. There is a pressure relief channel and an oil injection channel connected to the outside of the base. When the oil injection pipe rotates, the pressure relief channel can be connected or disconnected from the pressure relief hole, and the oil injection channel can be connected to each other. Connecting or disconnecting with the oil inlet tank;

The assembling method of the rotary oil injection device comprises the following steps:

Install the airway silica gel: install the airway silica gel on the base;

Install the oil injection pipe: install the oil injection pipe in the airway silicone with interference fit, and clamp it tightly, and then turn the oil injection pipe to the open position;

Install the handle: install the handle on the oil filling pipe with an interference fit, and make the handle outside the accommodating groove;

Assembling the base: Connect the base and the oil tank together by ultrasonic welding.
The method for assembling a rotary oil injection device according to claim 10, wherein the pressure relief passage comprises a pressure relief groove provided on the side surface of the oil injection pipe; the oil injection passage comprises an oil injection hole provided in the oil injection pipe and an oil injection hole provided in the oil injection pipe. The oil inlet hole on the side of the oil injection pipe is communicated with the oil inlet hole.
The method for assembling a rotary oil filling device according to claim 11, wherein when the pressure relief groove and the pressure relief hole are aligned with or staggered from each other, the pressure relief passage and the pressure relief hole are connected or disconnected from each other. open; when the oil inlet hole and the oil inlet groove are aligned with each other or staggered, the oil injection channel and the oil inlet groove are connected or disconnected from each other.
The method of assembling a rotary oil injection device according to claim 12, wherein when the pressure relief passage and the pressure relief hole communicate with each other, the oil injection passage and the oil inlet groove are also communicated with each other, and the oil injection pipe is located in the open position. position; when the oil injection channel and the oil inlet groove are disconnected from each other, the oil injection channel and the oil inlet groove are also disconnected from each other, and the oil injection pipe is in the closed position.
The assembling method of the rotary oil filling device according to claim 13, wherein a handle is fixedly arranged on the oil filling pipe, and a accommodating groove corresponding to the handle is formed on the base, and when the oil filling pipe is located in the In the open position, the handle is located outside the accommodating groove, and when the oil filling pipe is in the closed position, the handle is located in the accommodating groove.
The assembling method of the rotary oil injection device according to claim 14, wherein a fixing seat is provided on the base, and a fixing seat hole is formed on the fixing seat, and the fixing seat hole comprises an opposite first end and a second end, The first end communicates with the accommodating groove, and the second end extends into the oil cavity.
The method for assembling a rotary oil injection device according to claim 15, wherein the airway silica gel is fixed in the fixing seat hole, the airway silica gel comprises an opposite third end and a fourth end, the third end extends into the accommodating groove, the fourth end extends into the oil cavity, and the oil inlet groove is provided at the fourth end; the air channel silica gel is provided with an oil injection pipe installation hole, and the The oil pipe installation hole penetrates through the third end and the fourth end and communicates with the oil inlet groove; the pressure relief hole is arranged on the side surface of the airway silica gel and communicated with the oil pipe installation hole.
The method for assembling a rotary oil injection device according to claim 16, wherein the oil injection pipe is sleeved in the oil pipe installation hole in an interference fit manner, and when the oil injection pipe is in the closed position, the oil pipe The hole wall of the installation hole can seal the pressure relief groove and the oil inlet hole.
The assembling method of the rotary oil injection device according to claim 17, wherein a locking convex ring is provided on the outer wall of the oil injection pipe, and a locking groove corresponding to the locking convex ring is provided on the hole wall of the oil pipe installation hole .