Oil mist lubrication system

Abstract

The present invention discloses an oil mist lubrication system capable of continuously and quantitatively outputting oil mist. The oil mist of the present invention comprises an oil pump, an oil-gas distributor, and an oil mist generator. The oil-gas distributor is provided with an oil inlet, a gas inlet, and at least one output connector. The outlet of the oil pump is connected to the oil inlet of the oil-gas distributor to inject oil into the oil-gas distributor. The gas inlet of the oil-gas distributor is connected to compressed air at a certain pressure. The oil-gas distributor pumps out a certain amount of input oil and mixes it with the input compressed air to form an oil-gas flow, which is then continuously output through the output connector. The oil mist generator comprises an oil mist nozzle connected to the output connector. The oil-gas flow output from the output connector flows into the oil mist nozzle and is sprayed out through the oil mist nozzle as oil mist.

Description

Technical Field

[0001] The present invention relates to the field of oil mist lubrication, in particular to an oil mist lubrication system. Background Art

[0002] Oil mist lubrication is a typical gas-liquid two-phase fluid lubrication technology. It uses compressed air at a certain pressure to atomize liquid lubricating oil into small particles. The particles are then suspended in the compressed air to form an oil mist. Under its own pressure, the oil mist is transported through transmission pipelines to tools, bearings, transmission pairs, and other equipment. The atomized oil provides heat dissipation and lubrication. However, existing oil mist lubrication systems can only achieve continuous output of oil mist, not continuous and quantitative output, which limits their application scenarios.

[0003] Therefore, there is an urgent need for an oil mist lubrication system that can continuously and quantitatively output oil mist to overcome the above-mentioned defects. Summary of the Invention

[0004] The object of the present invention is to provide an oil mist lubrication system which can output oil mist continuously and quantitatively.

[0005] To achieve the above-mentioned purpose, the oil mist lubrication system provided by the present invention includes an oil pump, an oil-gas distributor and an oil mist generator. The oil-gas distributor is provided with an oil inlet, a gas inlet and at least one output connector. The outlet of the oil pump is connected to the oil inlet of the oil-gas distributor to inject oil into the oil-gas distributor. The gas inlet of the oil-gas distributor is connected to compressed air of a certain pressure. The oil-gas distributor pumps out the input oil according to a certain amount and mixes it with the input compressed air to form an oil flow, and the formed oil flow is continuously output through the output connector. The oil mist generator includes an oil mist nozzle, which is connected to the output connector. The oil flow output from the output connector flows into the oil mist nozzle and forms oil mist through the oil mist nozzle and is sprayed out.

[0006] Preferably, the gas inlet of the oil and gas distributor is connected to the first input gas circuit, and the first input gas circuit is equipped with a first solenoid valve for controlling the on-off of the first input gas circuit.

[0007] Preferably, the outlet of the oil pump is connected to the oil inlet of the oil-gas distributor via an input oil circuit, and a filter is installed in the input oil circuit.

[0008] Preferably, the oil pump is provided with an air inlet, the air inlet of the oil pump is connected to a second input air circuit, and the second input air circuit is equipped with a second solenoid valve for controlling the operating frequency of the oil pump.

[0009] Preferably, the oil mist lubrication system of the present invention is also provided with a first total input air circuit, the end of the first total input air circuit is dispersed to form a first input air circuit and a second input air circuit, and the first total input air circuit is installed with a first air source processing device, which is used to filter and / or reduce the pressure of the input compressed air.

[0010] Preferably, the oil mist nozzle is connected to the output connector through an oil and gas flow input pipeline, and the oil mist nozzle is also connected to a second main input gas circuit, which is used to input compressed air to the oil mist nozzle. The compressed air input to the oil mist nozzle mixes with the oil and gas flow to form oil mist and is sprayed out.

[0011] Preferably, the oil mist generator further includes an oil mist storage container, the oil mist nozzle is arranged in the oil mist storage container, and the oil mist storage container is connected to an oil mist output pipeline.

[0012] Preferably, a structural chamber is provided in the oil mist nozzle, the lower end of the structural chamber opens to the bottom of the oil mist nozzle and forms an oil mist outlet, the oil mist nozzle is provided with a guide body in the structural chamber, the guide body extends downward from the top of the structural chamber, and the lower end of the guide body is a certain distance away from the oil mist outlet, a first channel is provided in the guide body, and a second channel is formed between the guide body and the wall of the structural chamber, the first channel and the second channel are respectively used for inputting oil and gas flow, or the first channel is used for inputting oil and gas flow and the second channel is used for inputting a mixed fluid of oil and gas flow and compressed air.

[0013] Preferably, the width of the second channel decreases continuously from top to bottom.

[0014] Preferably, the oil mist nozzle includes a first cylinder and a second cylinder that are detachably assembled, the bottom of the first cylinder protrudes downward to form a guide body, the first cylinder is provided with a guide chamber connected to the first channel, the structural chamber is provided in the second cylinder, the guide body penetrates the structural chamber, the radius of the upper end of the guide body is greater than or equal to the radius of the upper end of the structural chamber, the outer wall of the first cylinder cuts out a guide plane extending from the top of the first cylinder to the bottom of the first cylinder, the guide plane is vertically arranged, a guide groove is provided at the top of the first cylinder, one end of the guide groove is connected to the guide chamber, and the other end of the guide groove is open to the guide plane, the second cylinder includes a first part and a second part, the second part is provided below the first part, the radius of the first cylinder and the first part are equal, the radius of the first part is smaller than the radius of the second part, the first part is provided with multiple guide channels, one end of the guide channel is connected to the upper end of the second channel, and the other end of the guide channel is open to the outer wall of the first part.

[0015] Compared with the prior art, the present invention provides oil to the oil-gas distributor by connecting an oil pump to the oil inlet of the oil-gas distributor. The gas inlet of the oil-gas distributor is also connected to compressed air of a certain pressure, so that the oil-gas distributor pumps out a certain amount of the input oil and mixes it with the input compressed air to form an oil-gas flow. The oil-gas distributor can pump oil accurately and quantitatively. The accurately measured amount of oil is mixed with the input compressed air in the oil-gas distributor to form an oil-gas flow, which is output continuously and quantitatively. After the continuous and quantitative oil flow is injected into the oil mist nozzle, the oil mist nozzle can continuously and quantitatively generate and spray oil mist. In summary, the oil mist lubrication system of the present invention can output oil mist continuously and quantitatively. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the oil mist lubrication system of the present invention.

[0017] Figure 2 It is a front view of the oil mist lubrication system of the present invention.

[0018] Figure 3 It is a perspective view of the oil mist nozzle of the present invention.

[0019] Figure 4 It is a front view of the oil mist nozzle of the present invention.

[0020] Figure 5 The oil mist nozzle of the present invention is along Figure 4 Sectional view after cutting along line AA.

[0021] Figure 6 It is a top view of the oil mist nozzle of the present invention.

[0022] Figure 7 The oil mist nozzle of the present invention is along Figure 6 Cross-sectional view after cutting along line BB.

[0023] Figure 8 It is a perspective exploded view of the oil mist nozzle of the present invention. DETAILED DESCRIPTION

[0024] In order to explain the technical content and structural features of the present invention in detail, the following is a further description in conjunction with the embodiments and the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, the oil mist lubrication system 100 provided by the present invention includes an oil pump 10, an oil-gas distributor 20 and an oil mist generator 30. The oil-gas distributor 20 is provided with an oil inlet 21, a gas inlet 22 and at least one output connector 23. The outlet of the oil pump 10 is connected to the oil inlet 21 of the oil-gas distributor 20 to receive the oil injected into the oil-gas distributor 20, and the gas inlet 22 of the oil-gas distributor 20 is connected to compressed air of a certain pressure. The oil-gas distributor 20 pumps out a certain amount of the input oil and mixes it with the input compressed air to form an oil-gas flow, and the formed oil-gas flow is continuously output through the output connector 23. The oil mist generator 30 includes an oil mist nozzle 31, which is connected to the output connector 23. The oil-gas flow output from the output connector 23 flows into the oil mist nozzle 31 and is sprayed out through the oil mist nozzle 31 to form oil mist.

[0026] The present invention provides oil to the oil and gas distributor 20 by setting an oil pump 10 to be connected to the oil inlet 21 of the oil and gas distributor 20. The gas inlet 22 of the oil and gas distributor 20 is also connected to compressed air of a certain pressure, so that the oil and gas distributor 20 pumps out the input oil in a certain amount and mixes it with the input compressed air to form an oil and gas flow. The oil and gas distributor 20 can accurately and quantitatively pump oil, and the accurately and quantitative oil and the input compressed air are mixed in the oil and gas distributor 20 to form an oil and gas flow, which is continuously and quantitatively output. After the continuous and quantitative oil and gas flow is injected into the oil mist nozzle 31, the oil mist nozzle 31 can continuously and quantitatively generate oil mist and spray it out. In summary, the oil mist lubrication system 100 of the present invention can continuously and quantitatively output oil mist.

[0027] It is worth noting that the oil-gas distributor 20 is a volumetric distributor, and the oil output per operation is constant, for example, 0.01ml, 0.02ml, 0.03ml, 0.04ml, 0.05ml, etc. By setting the corresponding value, the oil-gas distributor 20 can be controlled to precisely and quantitatively pump oil on demand, so that the precisely measured amount of oil and the input compressed air are mixed in the oil-gas distributor 20 to form a continuous, quantitative oil flow, which is then output. The purpose of providing the oil-gas distributor 20 in the present invention is to achieve micro-quantification of oil output, that is, to pump out a micro, quantitative amount of oil, allowing the oil to mix with the compressed air to form the desired oil flow.

[0028] The oil mist lubrication of the present invention can be applied to lathe power turret gear lubrication, precision grinder spindle bearing lubrication and other occasions to control the temperature and lubrication of bearings and gears.

[0029] like Figure 1 and Figure 2As shown, the gas inlet 22 of the oil-gas distributor 20 is connected to the first input gas line 40. The first input gas line 40 is equipped with a first solenoid valve 41 for controlling the on / off of the first input. The first solenoid valve 41 is generally in a normally open state, so that the first input gas line 40 continuously injects compressed air into the oil-gas distributor 20.

[0030] like Figure 1 and Figure 2 As shown, the oil pump 10 is a pneumatic pump, but is not limited thereto. The outlet of the oil pump 10 is connected to the oil inlet 21 of the oil-gas distributor 20 via an input oil line 50 , and the input oil line 50 is equipped with a filter 51 for filtering the oil input to the oil-gas distributor 20 .

[0031] like Figure 1 and Figure 2 As shown, the oil pump 10 has an air inlet connected to a second air input line 60. A second solenoid valve 61 is installed in the second air input line 60 to control the operating frequency of the oil pump 10. By controlling the switching frequency of the second solenoid valve 61, the operating frequency of the oil pump 10 can be controlled, thereby adjusting the frequency of oil delivery to the oil-air distributor 20.

[0032] In addition, the oil-gas distributor 20 oiling frequency can be adjusted. For example, if an oil-gas distributor 20 with an oil output of 0.01 ml is selected, the oiling frequency is increased from 0.01 ml / min to 0.03 ml / min. At this time, the oil-gas distributor 20 is adjusted from the original oiling once in 1 minute to oiling three times in 1 minute. The higher the oiling frequency, the higher the proportion of oil content in the oil and gas flow output from the output connector 23, and vice versa.

[0033] like Figure 1 and Figure 2 As shown, the oil mist lubrication system 100 of the present invention further comprises a first main input air circuit 70, the ends of which diverge to form a first input air circuit 40 and a second input air circuit 60. A first air source processing device 71 is mounted on the first main input air circuit 70, which is used to filter and reduce the pressure of the incoming compressed air. The provision of the first main input air circuit 70 facilitates control of the compressed air pressure. Preferably, the first air source processing device 71 includes a filter, a pressure reducing valve, and may also include an oil gauge to facilitate observation and monitoring of the air pressure.

[0034] like Figure 1 and Figure 2As shown, the oil mist nozzle 31 is connected to the output connector 23 via the oil and gas flow input pipeline 80. The oil mist nozzle 31 is also connected to a second main input gas line 90. The second main input gas line 90 is used to supply compressed air to the oil mist nozzle 31. The compressed air input to the oil mist nozzle 31 mixes with the oil and gas flow to form oil mist, which is then sprayed out. It is worth noting that the second main input gas line 90 is not required. In other words, even if the second main input gas line 90 does not supply compressed air to the oil mist nozzle 31, oil mist can still be generated and sprayed out by relying solely on the oil and gas flow input pipeline 80 to supply the oil mist nozzle 31 with oil and gas flow. Preferably, the second main input gas line 90 is equipped with a second air source processing device 91, which is used to filter and reduce the pressure of the input compressed air. The second air source processing device 91 includes a filter, a pressure reducing valve, and may also include an oil gauge to facilitate observation and monitoring of air pressure.

[0035] like Figure 1 and Figure 2 As shown, the oil mist generator 30 also includes an oil mist storage container 32. The oil mist nozzle 31 is disposed within the oil mist storage container 32. The oil mist storage container 32 is connected to an oil mist output pipeline 33. The sprayed oil mist is temporarily stored in the oil mist storage container 32 and then output to the lubrication point and cooling point through the oil mist output pipeline 33.

[0036] like Figures 3 to 8 As shown, the present invention also incorporates structural innovations into the oil mist nozzle 31, enabling it to generate and spray oil mist without the need for separate compressed air input. Specifically, the oil mist nozzle 31 includes a structural chamber 311. The lower end of the structural chamber 311 opens to the bottom of the oil mist nozzle 31 and forms an oil mist outlet 312. The oil mist nozzle 31 includes a guide body 313 within the structural chamber 311. The guide body 313 extends downward from the top of the structural chamber 311, with the lower end of the guide body 313 spaced a certain distance from the oil mist outlet 312. The guide body 313 includes a first channel 314, and a second channel 315 is formed between the guide body 313 and the wall of the structural chamber 311. The first channel 314 and the second channel 315 are each used to input an oil and gas flow, or the first channel 314 is used to input an oil and gas flow, while the second channel 315 is used to input a mixed fluid of the oil and gas flow and compressed air.

[0037] It's worth pointing out again that the "oil and air flow" flowing from output connector 23 to input oil passage 50 is a fluid formed by mixing a certain amount of lubricating oil with compressed air. This fluid has not yet been atomized and only forms oil mist after being atomized by oil mist nozzle 31. Conventional oil mist nozzles have two flow channels: one for inputting compressed air and the other for inputting a certain amount of lubricating oil droplets. The lubricating oil droplets and compressed air are not mixed beforehand; they flow separately and mix at the end of their respective flow channels to form oil mist, which is then sprayed out.

[0038] The present invention, however, forms an oil-gas flow through the oil-gas distributor 20 and outputs it through the output connector 23. The oil-gas flow is then input into the oil mist nozzle 31. A portion of the oil-gas flow flows along the first channel 314, and a portion of the oil-gas flow flows along the second channel 315. The oil-gas flow output from the first channel 314 and the oil-gas flow output from the second channel 315 are ultimately dispersed and mixed at the oil mist outlet 312 to form an oil mist that is then sprayed out. This reduces the droplet content and thus the unatomized portion, thereby generating more oil mist and improving the atomization effect. As can be seen from the above, neither the first channel 314 nor the second channel 315 independently inputs compressed air. By pre-forming an oil-gas flow from the oil and compressed air, the oil mist is formed solely by the mixing of the two oil-gas flows, thereby achieving the purpose of improving the atomization effect and also contributing to improving the uniformity of the oil mist.

[0039] The above-mentioned solution of using the oil mist nozzle 31 to form the oil mist is to suspend the second main input air path 90 from inputting compressed air to the oil mist nozzle 31 .

[0040] In fact, the second main input air circuit 90 can also be used to input compressed air to the oil mist nozzle 31. However, the injected compressed air will not flow through the first channel 314 and the second channel 315 alone. The compressed air output from the second main input air circuit 90 flows into the second channel 315 and mixes with the oil and gas flow flowing into the second channel 315 to form a mixed fluid. Due to the participation of compressed air, the mixed fluid formed in the second channel 315 can flow more quickly, which helps to increase the output speed and output pressure of the oil mist and adapt to different production scenarios.

[0041] Furthermore, the width of the second channel 315 decreases continuously from top to bottom, and the second channel 315 forms a structure similar to a "Venturi tube". The oil and gas flow (or the mixed fluid of the oil and gas flow and compressed air) output from the second channel 315 has a high flow rate and low pressure, which can attract the oil and gas flow output from the first channel 314. The two collide and mix with each other, and finally form oil mist at the oil mist outlet 312 and spray it out.

[0042] like Figures 3 to 8As shown, the oil mist nozzle 31 comprises a first cylindrical body 316 and a second cylindrical body 317 that are separably assembled. The bottom of the first cylindrical body 316 protrudes downward to form a flow guide 313. The first cylindrical body 316 defines a flow guide chamber 318 that communicates with the first channel 314. The structural chamber 311 is disposed within the second cylindrical body 317. The flow guide 313 extends through the structural chamber 311. The radius of the upper end of the flow guide 313 is greater than or equal to the radius of the upper end of the structural chamber 311, ensuring that the upper end of the flow guide 313 is mounted on the upper end of the structural chamber 311 with an interference fit or transition fit. The outer wall of the first column 316 defines a drainage plane 319 extending from the top to the bottom of the first column 316. The drainage plane 319 is vertically arranged. A drainage groove 3161 is defined at the top of the first column 316. One end of the drainage groove 3161 communicates with the diversion chamber 318, while the other end of the drainage groove 3161 opens into the drainage plane 319. The second column 317 comprises a first portion 3171 and a second portion 3172. The second portion 3172 is positioned below the first portion 3171. The first column 316 and the first portion 3171 have the same radius, while the first portion 3171 has a smaller radius than the second portion 3172. The first portion 3171 defines a plurality of diversion channels 310. One end of each channel communicates with the upper end of the second channel 315, while the other end of each channel opens into the outer wall of the first portion 3171.

[0043] The oil mist nozzle 31 is mounted on a device (such as a spray gun, Figure 7 After that, the oil and gas flow input to the flow guide chamber 318 is divided into two streams, one of which flows into the first channel 314 (ie Figure 7 The other flows out of the drainage groove 3161 and flows down along the drainage plane 319 to the side wall of the first portion 3171, then flows into the guide channel 310, and finally flows into the second channel 315 (i.e. Figure 7 Thus, by providing the drainage plane 319 and the drainage groove 3161, the oil and gas flow can be divided into two streams, which flow into the first channel 314 and the second channel 315 respectively. In this way, by first merging the oil and gas flows and then dividing them, it helps to simplify the structure and layout.

[0044] The above description of the oil mist nozzle 31 is in the corresponding Figure 4 , the direction indicated by the arrow Z is from top to bottom.

[0045] Please refer to Figure 7When compressed air is supplied to the oil mist nozzle 31 via the second main air input line 90, the compressed air output from the second main air input line 90 flows to the outer surface of the first portion 3171 and into the diversion channel 310. The oil and gas flow exiting the diversion groove 3161 also flows into the diversion channel 310 and subsequently into the second channel 315. These two flows mix to form the mixed fluid transported in the second channel 315. It is worth noting that the compressed air does not flow into the diversion chamber 318 because the diversion chamber 318 is filled with oil and gas and has a high pressure, while the pressure in the second channel 315 and the structural chamber 311 is relatively low. Due to the entropy increase and entropy decrease effect, the compressed air only flows into the diversion channel 310.

[0046] The following briefly introduces the working process of the oil mist lubrication system 100 of the present invention: the first solenoid valve 41 is opened, the second solenoid valve 61 is opened and closed according to a certain working frequency, the first input air path 40 inputs compressed air of a certain pressure to the gas inlet 22 of the oil and gas distributor 20, the oil pump 10 pumps oil at a certain frequency, and the pumped oil is input to the oil inlet 21 of the oil and gas distributor 20 through the input oil path 50. The oil and gas distributor 20 pumps out the input oil according to a certain amount and mixes it with the input compressed air to form an oil and gas flow, and continuously outputs the oil and gas flow through the output connector 23. The oil and gas flow first flows into the guide chamber 318 and is divided into two streams, one of which flows into the first channel 314 (i.e. Figure 7 The other flows out of the drainage groove 3161 and flows down along the drainage plane 319 to the side wall of the first portion 3171, then flows into the guide channel 310, and finally flows into the second channel 315 (i.e. Figure 7 The compressed air input from the second total input air path 90 flows to the outer side surface of the first portion 3171, and this part of the compressed air flows into the guide channel 310 and then flows into the second channel 315, and mixes with the oil and gas flow in the second channel 315 to form a mixed fluid. The oil and gas flow flowing out of the first channel 314 and the mixed fluid in the second channel 315 mix with each other and are dispersed to form oil mist, which is sprayed out from the oil mist outlet 312. The oil mist is temporarily stored in the oil mist storage container 32 and is finally output through the oil mist output pipeline 33.

[0047] The above disclosure is only a preferred embodiment of the present invention and cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are within the scope of the present invention.

Claims

1. An oil mist lubrication system, characterized in that: The invention comprises an oil pump, an oil-gas distributor and an oil mist generator, wherein the oil-gas distributor is provided with an oil inlet, a gas inlet and at least one output joint, the outlet of the oil pump is connected to the oil inlet of the oil-gas distributor to inject oil into the oil-gas distributor, the gas inlet of the oil-gas distributor is connected to compressed air of a certain pressure, the oil-gas distributor pumps out a certain amount of input oil and mixes it with the input compressed air to form an oil flow and continuously outputs the formed oil flow through the output joint, the oil mist generator comprises an oil mist nozzle, the oil mist nozzle is connected to the output joint, the oil flow output from the output joint flows into the oil mist nozzle and passes through the oil mist nozzle. The oil mist nozzle forms oil mist and sprays it out; a structural chamber is provided in the oil mist nozzle, the lower end of the structural chamber opens to the bottom of the oil mist nozzle and forms an oil mist outlet, the oil mist nozzle is provided with a guide body in the structural chamber, the guide body extends downward from the top of the structural chamber, and the lower end of the guide body is a certain distance away from the oil mist outlet, a first channel is provided in the guide body, and a second channel is formed between the guide body and the wall surface of the structural chamber, the first channel and the second channel are respectively used for inputting oil and gas flow, or the first channel is used for inputting oil and gas flow and the second channel is respectively used for inputting a mixed fluid of oil and gas flow and compressed air.

2. The oil mist lubrication system according to claim 1, characterized in that: The gas inlet of the oil and gas distributor is connected to a first input gas circuit, and the first input gas circuit is equipped with a first solenoid valve for controlling the on-off of the first input gas circuit.

3. The oil mist lubrication system according to claim 1, characterized in that: The outlet of the oil pump is connected to the oil inlet of the oil-gas distributor via an input oil circuit, and a filter is installed on the input oil circuit.

4. The oil mist lubrication system according to claim 2, characterized in that: The oil pump is provided with an air inlet, the air inlet of the oil pump is connected to a second input air circuit, and the second input air circuit is equipped with a second solenoid valve for controlling the operating frequency of the oil pump.

5. The oil mist lubrication system according to claim 4, characterized in that: A first total input air circuit is also provided, the ends of which are dispersed to form the first input air circuit and the second input air circuit. The first total input air circuit is equipped with a first air source processing device, which is used to filter and / or reduce the pressure of the input compressed air.

6. The oil mist lubrication system according to claim 5, characterized in that: The oil mist nozzle is connected to the output connector via an oil and gas flow input pipeline. The oil mist nozzle is also connected to a second main input gas circuit. The second main input gas circuit is used to input compressed air to the oil mist nozzle. The compressed air input to the oil mist nozzle is mixed with the oil and gas flow to form oil mist and is sprayed out.

7. The oil mist lubrication system according to claim 1, characterized in that: The oil mist generator further includes an oil mist storage container, the oil mist nozzle is arranged in the oil mist storage container, and the oil mist storage container is connected to an oil mist output pipeline.

8. The oil mist lubrication system according to claim 1, characterized in that: The width of the second channel decreases continuously from top to bottom.

9. The oil mist lubrication system according to claim 1, characterized in that: The oil mist nozzle includes a first cylindrical body and a second cylindrical body that are detachably assembled. The bottom of the first cylindrical body protrudes downward to form the guide body. The first cylindrical body is provided with a guide chamber connected to the first channel. The structural chamber is provided in the second cylindrical body. The guide body penetrates the structural chamber. The radius of the upper end of the guide body is greater than or equal to the radius of the upper end of the structural chamber. The outer wall of the first cylindrical body is cut out to form a guide plane extending from the top of the first cylindrical body to the bottom of the first cylindrical body. The guide plane is arranged vertically. The top of the first cylindrical body is provided with a guide groove. One end of the guide groove is connected to the guide chamber, and the other end of the guide groove opens to the guide plane. The second cylindrical body includes a first part and a second part. The second part is provided below the first part. The radius of the first cylindrical body and the first part is equal, and the radius of the first part is smaller than that of the second part. The first part is provided with a plurality of guide channels. One end of each guide channel is connected to the upper end of the second channel, and the other end of each guide channel opens to the outer wall of the first part.

Images