Atomization device
By designing a movable mouthpiece to control the connection between the filling chamber and the storage chamber, the problem of e-liquid oxidation before use is solved, ensuring the quality of the e-liquid and the flavor of the aerosol, and improving the user experience.
Patent Information
- Application Number
- CN202422903914.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing atomizing devices have e-liquid that has been in contact with air for a long time before use, which leads to oxidation and affects the taste of the atomized liquid.
The design features a movable mouthpiece, which controls the connection between the filling chamber and the reservoir chamber. The e-liquid is sealed in the filling chamber before use to prevent oxidation. During use, the e-liquid flows into the reservoir chamber and is absorbed into the atomizer core.
It ensures the quality of e-liquid, improves the flavor and user experience of the aerosol, and is simple and convenient to use.
Smart Images
Figure CN223759236U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to atomization technical field, especially relate to an atomization equipment. BACKGROUND
[0002] The existing atomization equipment usually includes an atomization device and a power supply assembly for supplying power to the atomization device, and the atomization device is internally constructed with an oil storage cavity, an atomization cavity and an atomization core located in the atomization cavity, wherein the atomization cavity is communicated with the outside, the oil storage cavity is communicated with the atomization cavity, and the atomization core can adsorb the tobacco tar in the oil storage cavity. In use, the power supply assembly supplies power to the atomization core, so that the atomization core converts the adsorbed tobacco tar into an aerosol to flow out of a suction nozzle for a user to suck.
[0003] The existing atomization equipment is usually filled with tobacco tar in the oil storage cavity before leaving the factory. Due to the communication between the atomization cavity and the oil storage cavity, part of the tobacco tar is adsorbed on the atomization core before use. As a result, the tobacco tar adsorbed on the atomization core has been in contact with air for a long time before atomization, which makes the tobacco tar easy to be oxidized, and finally affects the taste of the aerosol. SUMMARY
[0004] The main purpose of the utility model is to provide an atomization equipment, which aims to solve the problem that the tobacco tar of the existing atomization device has been in contact with air for a long time before atomization, which makes the tobacco tar easy to be oxidized, and finally affects the taste of the aerosol.
[0005] To achieve the above-mentioned purpose, the utility model provides an atomization equipment, which comprises:
[0006] A shell assembly and an atomization assembly, the shell assembly comprises an oil storage compartment, the oil storage compartment is hollow inside, and an upwardly protruding and hollow connecting column is formed on the upper side of the oil storage compartment; the atomization assembly comprises an atomization tube and an atomization core installed inside the atomization tube, one end of the atomization tube is installed on the lower side of the oil storage compartment, and the other end is inserted into the connecting column to form an oil storage cavity between the outer wall of the atomization tube and the inside of the oil storage compartment, the inside of the atomization tube constitutes an atomization cavity, the wall of the atomization tube is provided with an oil inlet hole communicating the oil storage cavity and the atomization cavity, and the upper side of the oil storage compartment is provided with a movable hole communicating the oil storage cavity and the outside; the shell assembly is also formed with an oil injection cavity and an oil injection channel communicating the oil storage cavity and the oil injection cavity;
[0007] A suction nozzle comprising a body and an oil blocking column connected together, the body is formed with an aerosol outlet column, the aerosol outlet column is provided with an aerosol outlet channel penetrating through both ends thereof, the aerosol outlet column is movably sleeved with the connecting column, and the oil blocking column is movably inserted into the movable hole and the oil injection channel, so that the suction nozzle has an oil blocking position and an oil injection position on the movable track;
[0008] In the oil blocking position, the oil blocking column is sequentially inserted into the movable hole and the oil injection channel to block the movable hole and the oil injection channel.
[0009] The oil blocking column is inserted into the movable hole and forms an oil passing gap between the oil injection channel when the oil injection position.
[0010] Optionally, the sidewall of the oil injection channel is provided with an oil injection hole in communication with the oil storage cavity, the oil injection hole is blocked by the oil blocking column when the oil injection position, and the oil injection hole is exposed when the oil injection position.
[0011] Optionally, the movable hole comprises a first hole section and a second hole section connected with each other, the first hole section is in communication with the outside of the oil storage chamber at one end away from the second hole section, the inner diameter of the first hole section is smaller than that of the second hole section to form a limiting step between the first hole section and the second hole section, and the outer wall of the oil blocking column forms a limiting protrusion;
[0012] The atomizing device further comprises an elastic reset member, the elastic reset member is sleeved on the oil blocking column, and the elastic member is located between the limiting protrusion and the limiting step, the elastic reset member has a natural elongation state and a compressed state, in the natural elongation state, one end of the elastic reset member is in contact with the limiting step, the other end is in contact with the limiting protrusion, and the oil injection position is located in the oil injection position; in the compressed state, the elastic reset member is compressed between the limiting step and the limiting protrusion, and the oil injection position is located in the oil injection position.
[0013] Optionally, the mist outlet column is movably sleeved on the connecting column, the inner wall of the mist outlet channel is provided with a limiting protrusion extending along the circumference of the mist outlet column, the end of the connecting column abuts against the limiting protrusion when the oil injection position is located in the oil injection position, and the connecting column is located below the limiting protrusion away from the limiting protrusion when the oil injection position is located in the oil injection position.
[0014] Optionally, the outer wall of the oil blocking column is sleeved with a first sealing ring and a second sealing ring, the first sealing ring abuts against the inner wall of the movable hole when the oil injection position is located in the oil injection position, and the second sealing ring abuts against the inner wall of the oil injection channel.
[0015] Optionally, the outer wall of the oil blocking column is formed with a first limiting groove and a second limiting groove extending along the circumference of the oil blocking column, the first sealing ring is sleeved in the first limiting groove, and the second sealing ring is sleeved in the second limiting groove.
[0016] Optionally, the body is in the shape of a hat, the body is movably sleeved on at least part of the oil storage chamber, and the oil blocking column is arranged on the inner top side of the body.
[0017] Optionally, the atomization device further comprises a collar, which is sleeved on part of the shell assembly and the lower end of the body to shield the gap between the body and the shell assembly.
[0018] Optionally, the shell assembly is further formed with a receiving cavity below the oil storage cavity, the oil injection cavity is arranged around the receiving cavity, the receiving cavity has a cavity opening communicating with the outside, and the atomization device further comprises a power supply assembly installed in the receiving cavity.
[0019] Optionally, the number of the movable holes is two, which are arranged on both sides of the connecting column, the number and position of the oil injection channels correspond to the number and position of the movable holes, and the number and position of the oil blocking columns correspond to the number and position of the movable holes.
[0020] The technical scheme of the utility model, through setting the suction nozzle to be movable, can control whether the oil injection cavity communicates with the oil storage cavity by operating the suction nozzle. In this way, before using the atomization device, the tobacco tar can be injected into the oil injection cavity, and the suction nozzle is operated at the oil blocking position to seal the oil injection cavity, so that the tobacco tar in the oil injection cavity is not easy to be oxidized by air, the quality of the tobacco tar is ensured, the taste of the tobacco tar after being atomized into aerosol is ensured, and the user experience is improved. When the atomization device needs to be used, the tobacco tar can enter the oil storage cavity through the oil passing gap by operating the suction nozzle, and the tobacco tar in the oil storage cavity flows and is adsorbed to the atomization core in the atomization cavity, so as to be ready for subsequent atomization into aerosol for the user to smoke, which is simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.
[0022] Figure 1 It is a structure schematic view of the atomization device of the utility model;
[0023] Figure 2 It is a sectional structure schematic view of the suction nozzle of the atomization device of the utility model when the suction nozzle is at the oil blocking position;
[0024] Figure 3 It is a sectional structure schematic view of the suction nozzle of the atomization device of the utility model when the suction nozzle is at the oil injection position;
[0025] Figure 4 It is a structure schematic view of the oil storage bin of the atomization device of the utility model;
[0026] Figure 5 Structure diagram of the suction nozzle of the atomization equipment.
[0027] Brief description of the drawings:
[0028] Reference Name Reference Name 110 Oil storage chamber 111 Connecting column 112 Movable hole 113 Oil storage cavity 120 Oil injection cavity 130 Oil injection channel 131 Oil injection hole 210 Atomization tube 211 Atomization cavity 220 Atomization core 300 Suction nozzle 310 Body 311 Mist outlet column 312 Mist outlet channel 313 Limiting protrusion 320 Oil blocking column 321 First limiting groove 322 Second limiting groove 331 First sealing ring 332 Second sealing ring 400 Elastic return member 500 Power supply assembly 510 Battery 600 Sleeve
[0029] The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0031] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.
[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three schemes, for example, A and / or B includes A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.
[0033] The specific structure of the atomization equipment will be mainly described below.
[0034] Reference Figures 1 to 5 In the embodiments of the present application, the atomization equipment comprises:
[0035] The shell assembly comprises an oil storage bin 110, which is hollow inside, and an upwardly protruding and hollow connecting column 111 is formed on the upper side of the oil storage bin 110; the atomization assembly comprises an atomization tube 210 and an atomization core 220 installed inside the atomization tube 210, one end of the atomization tube 210 is installed on the lower side of the oil storage bin 110, and the other end is inserted into the connecting column 111, so that an oil storage cavity 113 is formed between the outer wall of the atomization tube 210 and the inside of the oil storage bin 110, the inside of the atomization tube 210 constitutes an atomization cavity 211, the tube wall of the atomization tube 210 is provided with an oil inlet hole communicating the oil storage cavity 113 and the atomization cavity 211, and the upper side of the oil storage bin 110 is provided with a movable hole 112 communicating the oil storage cavity 113 and the outside; the shell assembly is further provided with an oil injection cavity 120 and an oil injection channel 130 communicating the oil storage cavity 113 and the oil injection cavity 120;
[0036] The suction nozzle 300 comprises a body 310 and an oil blocking column 320 connected to each other, the body 310 is formed with a mist outlet column 311, the mist outlet column 311 is provided with a mist outlet channel 312 penetrating through both ends thereof, the mist outlet column 311 is movably sleeved with the connecting column 111, and the oil blocking column 320 is movably inserted into the movable hole 112 and the oil injection channel 130, so that the suction nozzle 300 has an oil blocking position and an oil injection position in the movable track;
[0037] In the oil blocking position, the oil blocking column 320 is sequentially inserted into the movable hole 112 and the oil injection channel 130 to block the movable hole 112 and the oil injection channel 130;
[0038] In the oil injection position, the oil blocking column 320 is inserted into the movable hole 112 and forms an oil passing gap with the oil injection channel 130.
[0039] Specifically, in the embodiment, the shell assembly can be composed of multiple components to facilitate the installation of the atomization assembly, the power supply assembly 500 and the like. Since the suction nozzle 300 can be moved relative to the connecting column 111 and the movable hole 112 and the oil injection channel 130 at the same time, the user can operate the suction nozzle 300 to be located at the oil blocking position or the oil injection position. It is worth mentioning that the mist outlet column 311 is movably sleeved with the connecting column 111, which can be that the mist outlet column 311 is movably sleeved with the connecting column 111, or the connecting column 111 is movably sleeved with the mist outlet column 311. The sizes of the movable hole 112 and the oil injection channel 130 can be the same or different, which is not strictly limited here, as long as when the oil blocking column 320 is moved to the oil blocking position, different positions of the oil blocking column 320 can block at least part of the movable hole 112 and the oil injection channel 130 respectively, so that the oil cannot pass through.
[0040] Before use, the e-liquid reservoir 113 is not filled with e-liquid. E-liquid is then injected into the filling chamber 120, and the mouthpiece 300 is moved to the plugged position. This causes the plugging column 320 of the mouthpiece 300 to block the movable hole 112 and the filling channel 130, preventing the e-liquid in the filling chamber 120 from flowing into the reservoir 113. Thus, before use, the reservoir 113 is empty of e-liquid, and the atomizer coil 220 in the atomizing chamber 211 is also free of e-liquid. The e-liquid remains within the sealed filling chamber 120, making it less susceptible to oxidation by air.
[0041] When the user needs to use the atomizing device, the mouthpiece 300 is operated to be in the oil filling position, so that the e-liquid in the oil filling chamber 120 can enter the oil storage chamber 113 through the oil passage. The e-liquid in the oil storage chamber 113 then flows and is absorbed into the atomizing core 220 in the atomizing chamber 211, so that it can be atomized into mist and then flow out through the mist outlet channel 312 for the user to inhale.
[0042] The technical solution of this utility model involves making the mouthpiece 300 movable, allowing control over whether the filling chamber 120 is connected to the storage chamber 113. Before using the atomizing device, e-liquid can be injected into the filling chamber 120, and the movable mouthpiece 300 can be positioned in the blocked position to seal the filling chamber 120. This prevents the e-liquid in the filling chamber 120 from being oxidized by air, ensuring the quality of the e-liquid and thus guaranteeing the taste after atomization, improving the user experience. When the atomizing device is needed, operating the mouthpiece 300 allows the e-liquid to enter the storage chamber 113 through the oil passage. The e-liquid in the storage chamber 113 then flows and is absorbed into the atomizing core 220 in the atomizing chamber 211, ready for subsequent atomization into an atomized mist for the user to inhale. The operation is simple and convenient.
[0043] Regarding the formation of the oil passage gap, in some embodiments, the side wall of the oil injection channel 130 is provided with an oil injection hole 131, which communicates with the oil storage chamber 113. When the suction nozzle 300 is in the oil-blocking position, the oil-blocking column 320 blocks the oil injection hole 131. When the suction nozzle 300 is in the oil injection position, the oil-blocking column 320 is located on one side of the oil injection hole 131 to expose the oil injection hole 131. In this way, the oil in the oil injection chamber 120 can flow into the oil storage chamber 113 sequentially through the oil injection channel 130 and the oil injection hole 131, thereby realizing oil injection.
[0044] In some embodiments, the movable hole 112 includes a first hole segment and a second hole segment connected together. The end of the first hole segment away from the second hole segment communicates with the outside of the oil storage tank 110. The inner diameter of the first hole segment is smaller than the inner diameter of the second hole segment to form a limiting step between the first hole segment and the second hole segment. A limiting protrusion is formed on the outer wall of the oil blocking column 320. The atomizing device also includes an elastic reset member 400, which is sleeved on the oil blocking column 320 and located between the limiting protrusion and the limiting step. The elastic reset member 400 has a naturally extended state and a compressed state. In the naturally extended state, one end of the elastic reset member 400 contacts the limiting step, and the other end contacts the limiting protrusion. The nozzle 300 is located at the oil blocking position. In the compressed state, the elastic reset member 400 is compressed between the limiting step and the limiting protrusion. The nozzle 300 is located at the oil filling position. In this way, by reasonably designing the length of the elastic reset member 400, the elastic reset member 400 can be in a naturally extended state, and the mouthpiece 300 can be in the oil-blocking position. When it is necessary to add e-liquid to the oil storage chamber 113, the mouthpiece 300 is pulled to the oil-filling position, so that the e-liquid can enter the oil storage chamber 113 through the oil passage gap to complete the oil filling. After the oil filling is completed, the mouthpiece 300 is released, the elastic reset member 400 is reset, and the mouthpiece 300 returns to the oil-blocking position.
[0045] In some embodiments, the mist column 311 is movably sleeved on the connecting column 111. A limiting protrusion 313 protrudes from the inner wall of the mist channel 312, extending circumferentially along the mist column 311. When the nozzle 300 is in the oil-blocking position, the end of the connecting column 111 abuts against the limiting protrusion 313. When the nozzle 300 is in the oil-filling position, the connecting column 111 is located below and away from the limiting protrusion 313. Thus, when the user operates the nozzle 300 until it abuts against the end of the connecting column 111, the nozzle 300 has reached the oil-blocking position. In other words, the position of the limiting protrusion 313 allows the user to easily determine whether the nozzle 300 has been operated correctly.
[0046] To improve the sealing performance within the atomizing device, in some embodiments, a first sealing ring 331 and a second sealing ring 332 are fitted onto the outer wall of the oil-blocking column 320. When the nozzle 300 is located in the oil-blocking position, the first sealing ring 331 abuts against the inner wall of the movable hole 112, and the second sealing ring 332 abuts against the inner wall of the oil injection channel 130. Both the first sealing ring 331 and the second sealing ring 332 can provide a sealing effect, ensuring the sealing performance of the oil storage chamber 113 and the oil injection chamber 120. Furthermore, the outer wall of the oil-blocking column 320 is formed with a first limiting groove 321 and a second limiting groove 322, both extending circumferentially along the oil-blocking column 320. The first sealing ring 331 is fitted into the first limiting groove 321, and the second sealing ring 332 is fitted into the second limiting groove 322. The first limiting groove 321 limits the first sealing ring 331, and the second limiting groove 322 limits the second sealing ring 332, ensuring the stability of the first sealing ring 331 and the second sealing ring 332, so as to reliably perform the sealing function.
[0047] In some embodiments, the body 310 is cap-shaped and movably fitted onto at least a portion of the oil reservoir 110. The oil-blocking column 320 is disposed on the inner top side of the body 310. The body 310 fitted onto the oil reservoir 110 allows the oil reservoir 110 to partially limit the position of the mouthpiece 300, preventing the mouthpiece 300 from shifting or tilting, and also contributing to the aesthetics of the atomizing device. Furthermore, the atomizing device also includes a collar 600, which is fitted onto a portion of the housing assembly and the lower end of the body 310 to cover the gap between the body 310 and the housing assembly. This further enhances the appearance of the atomizing device.
[0048] In some embodiments, the housing assembly further forms a receiving cavity located below the oil storage cavity 113, and the oil filling cavity 120 is disposed around the receiving cavity. The receiving cavity has an opening communicating with the outside. The atomizing device also includes a power supply component 500, which is installed in the receiving cavity. This efficient use of space results in a compact overall structure for the atomizing device, facilitating its miniaturization. The power supply component includes a battery 510, a microphone, etc.
[0049] In some embodiments, there are two movable holes 112, located on both sides of the connecting post 111. The number and position of the oil injection channels 130 correspond to the number and position of the movable holes 112, and the number and position of the oil plugging posts 320 correspond to the number and position of the movable holes 112. This facilitates air venting during oil injection and ensures smooth oil injection.
[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. An atomising device characterised in that, The application relates to a shell assembly and an atomization assembly, wherein the shell assembly comprises an oil storage bin, the inside of the oil storage bin is hollow, and an upwardly protruding and hollow connecting column is formed on the upper side of the oil storage bin; the atomization assembly comprises an atomization tube and an atomization core installed in the inside of the atomization tube, one end of the atomization tube is installed on the lower side of the oil storage bin, the other end is inserted into the connecting column, an oil storage cavity is formed between the outer wall of the atomization tube and the inside of the oil storage bin, the inside of the atomization tube constitutes an atomization cavity, the wall of the atomization tube is provided with an oil inlet hole which is connected with the oil storage cavity and the atomization cavity, and the upper side of the oil storage bin is provided with a movable hole which is connected with the oil storage cavity and the outside; the shell assembly is further provided with an oil injection cavity and an oil injection channel which is connected with the oil storage cavity and the oil injection cavity; a suction nozzle comprises a body and an oil blocking column which are connected with each other, the body is provided with a mist outlet column, the mist outlet column is provided with a mist outlet channel which penetrates through both ends of the mist outlet column, the mist outlet column is movably sleeved with the connecting column, and the oil blocking column is movably inserted into the movable hole and the oil injection channel, so that the suction nozzle has an oil blocking position and an oil injection position on a movable track; in the oil blocking position, the oil blocking column is sequentially inserted into the movable hole and the oil injection channel, so as to block the movable hole and the oil injection channel; in the oil injection position, the oil blocking column is inserted into the movable hole and forms an oil passing gap with the oil injection channel. The side wall of the oil injection channel is provided with an oil injection hole which is connected with the oil storage cavity, the oil injection hole is shielded by the oil blocking column when the suction nozzle is in the oil blocking position, and the oil blocking column is located on one side of the oil injection hole to expose the oil injection hole when the suction nozzle is in the oil injection position. The movable hole comprises a first hole section and a second hole section which are connected with each other, the end of the first hole section which is far away from the second hole section is connected with the outside of the oil storage bin, the inner diameter of the first hole section is smaller than the inner diameter of the second hole section, so as to form a limiting step between the first hole section and the second hole section, and the outer wall of the oil blocking column is provided with a limiting protrusion; The atomization device further comprises an elastic reset member, the elastic reset member is sleeved with the oil blocking column, the elastic reset member is located between the limiting step and the limiting protrusion, the elastic reset member has a natural elongation state and a compressed state, in the natural elongation state, one end of the elastic reset member is in contact with the limiting step, the other end is in contact with the limiting protrusion, and the suction nozzle is in the oil blocking position; in the compressed state, the elastic reset member is compressed between the limiting step and the limiting protrusion, and the suction nozzle is in the oil injection position. The mist outlet column is movably sleeved with the connecting column, the inner wall of the mist outlet channel is provided with a limiting protrusion which extends along the circumference of the mist outlet column, the end of the connecting column abuts against the limiting protrusion when the suction nozzle is in the oil blocking position, and the connecting column is located below the limiting protrusion and is far away from the limiting protrusion when the suction nozzle is in the oil injection position.
2. The atomizing apparatus of claim 1, wherein 3. The atomizing apparatus of claim 1, wherein 4. The atomizing apparatus of claim 1, wherein 5. The atomizing apparatus of claim 1, wherein The outer wall of the oil blocking column is sleeved with a first sealing ring and a second sealing ring, the first sealing ring abuts against the inner wall of the movable hole when the nozzle is located at the oil blocking position, and the second sealing ring abuts against the inner wall of the oil injection channel.
6. The atomizing apparatus of claim 5, wherein The outer wall of the oil blocking column is formed with a first limiting groove and a second limiting groove which extend along the circumference of the oil blocking column, the first sealing ring is sleeved in the first limiting groove, and the second sealing ring is sleeved in the second limiting groove.
7. The atomizing device of claim 1, wherein The body is in the shape of a hat, the body is movably sleeved at least part of the oil storage compartment, and the oil blocking column is arranged at the inner top side of the body.
8. The atomizing apparatus of claim 7, wherein The atomization device further comprises a sleeve ring sleeved at part of the shell assembly and the lower end of the body to shield the gap between the body and the shell assembly.
9. The atomizing device of claim 1, wherein, The shell assembly is further formed with a receiving cavity below the oil storage cavity, the oil injection cavity is arranged around the receiving cavity, the receiving cavity has a cavity opening communicating with the outside, and the atomization device further comprises a power supply assembly installed in the receiving cavity.
10. The atomizing apparatus of claim 1, wherein The number of the movable holes is two, which are arranged on both sides of the connecting column, the number and position of the oil injection channels correspond to the number and position of the movable holes, and the number and position of the oil blocking columns correspond to the number and position of the movable holes.