CN106693445B

CN106693445B - Intelligent oil collecting device

Info

Publication number: CN106693445B
Application number: CN201611144426.XA
Authority: CN
Inventors: 高玉斌; 曾建; 黄志刚; 敖正发
Original assignee: Chengdu Weilanxing Biotechnology Co ltd
Current assignee: Chengdu Weilanxing Biotechnology Co ltd
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2022-11-25
Anticipated expiration: 2036-12-13
Also published as: CN106693445A

Abstract

The invention relates to an intelligent oil collecting device, in particular to an intelligent oil collecting device for treating kitchen waste, and belongs to the technical field of oil-water separation equipment in the catering industry. The intelligent oil collecting device comprises an oil separating funnel and a driving device; the upper end of the oil separating funnel is provided with a funnel oil inlet, and the lower end of the oil separating funnel is provided with a funnel oil outlet; the driving device can drive the oil distribution funnel to move up and down. The intelligent oil collecting device provided by the invention utilizes the driving device to drive the oil distributing funnel to move up and down to collect oil, the oil collecting efficiency is high, the quality of an oil layer is good, and the production cost of the intelligent oil collecting device is low. Meanwhile, the liquid medium is arranged in the current loop, the movement path of the oil separating funnel is detected and controlled by utilizing the great difference of the conductivity of the oil layer and the water layer, the full-automatic oil receiving action is realized, the oil-water separation is completed by automatic detection, the operation is simple, and the automation degree is high.

Description

Intelligent oil collecting device

Technical Field

The invention relates to an intelligent oil collecting device, in particular to an intelligent oil collecting device for treating kitchen waste, and belongs to the technical field of oil-water separation equipment in the catering industry.

Background

With the continuous development of economy and the continuous improvement of the living standard of people in China, the catering industry of various cities also enters a high-speed development stage, but the accompanying household garbage and kitchen garbage seriously pollute the urban environmental sanitation and bring great harm to the living health of the vast people.

The kitchen waste is commonly called swill, is the remaining material after meal in catering industries such as hotels, restaurants, dining halls and the like and families, and mainly comprises rice and flour food residues, vegetables, animal and vegetable oil, meat and bones and other organic materials containing rich biomass energy. Kitchen waste is a potential resource which is overlooked for a long time and is huge in quantity. At present, the treatment method of kitchen waste is to firstly perform solid-liquid separation on the kitchen waste to obtain solid kitchen waste containing a small amount of moisture and grease, and a liquid oil-water mixture (commonly known as hogwash). The solid kitchen waste is treated in a common mode of direct landfill, incineration, biological processing and recycling and the like. The hogwash is discharged as waste or municipal sewage, or used to feed livestock. After the pigwash is discharged, the oil in the pigwash solidifies due to the reduced temperature of the liquid, and then collects at one or more collection points, thereby separating from the water layer. Due to the arbitrary discharge of hogwash oil, a lawless person for collecting waste oil appears. The illegal persons simply separate and refine the illegal cooking oil to be used as a new catering raw material. However, due to long-term mildew fermentation, the waste oil is deteriorated and is not suitable for human consumption. Returning to the table will seriously threaten the physical health of the diners. The hogwash is discharged at will, which not only harms human health, but also pollutes environment and causes resource waste.

Chinese utility model patent publication No. CN205222746U discloses an electric oil-water separator. The oil-water separation device is internally provided with an oil absorption separator, the oil absorption separator comprises a rotating wheel provided with an oil absorption belt, a motor driving the rotating wheel to rotate and an oil scraping sheet used for hanging oil adsorbed on the oil absorption belt, and the box body is also provided with an oil guide groove used for guiding the oil hung on the oil scraping sheet out of the box body. The oil-water separation device with the structure has a simple and small structure, can be directly used in a kitchen of a restaurant, collects hogwash oil from the source, avoids the hogwash oil from entering a city sewer pipeline, pollutes the environment, gives lawless persons the opportunity of salvaging swill-cooked dirty oil simultaneously, and stops the swill-cooked dirty oil from the source. However, the oil-absorbing separator with the structure adopts the oleophylic oil-absorbing belt and the oil guide groove to separate the oil from the water layer, so the oil-absorbing separator has high manufacturing cost and the oil-water separator has high production cost.

Disclosure of Invention

The invention aims to overcome the defects of high manufacturing cost of an oil absorption separator and high production cost of an oil-water separator in the prior art. The intelligent oil-water separator has the advantages of low cost and good oil-water separation effect.

In order to achieve the above purpose, the invention provides the following technical scheme:

an intelligent oil collecting device comprises an oil separating funnel and a driving device; the upper end of the oil separating funnel is provided with a funnel oil inlet, and the lower end of the oil separating funnel is provided with a funnel oil outlet; the driving device can drive the oil distribution funnel to move up and down. Above-mentioned intelligence oil collecting device is set up in the oil-water separation chamber, and the oil-water mixture is static layering under the environment of relative stillness in the oil-water separation chamber, obtains upper oil reservoir and lower floor's water layer. The upper oil layer enters the oil separating funnel through a funnel oil inlet of the intelligent oil collecting device. Meanwhile, the driving device drives the oil separating funnel to move upwards, and an oil layer in the oil separating funnel is discharged out of the intelligent oil collecting device from the oil outlet under the action of gravity pressure difference and enters the next link. The intelligent oil collecting device has the advantages of high oil collecting efficiency, good oil layer quality and low production cost.

As the preferred scheme of the invention, the intelligent oil collecting device also comprises a CPU control module, a power supply module, a first probe and an anode detection plate; the power supply module is respectively connected with the CPU control module and the driving device; the first probe is connected with the negative electrode of the power supply module, and the positive detection plate is connected with the positive electrode of the power supply module; the first probe is positioned on the oil distribution funnel and connected with the CPU control module; the CPU control module is connected with the driving device. In the intelligent oil collecting device with the structure, the power supply module provides a power supply for the CPU control module and the driving device; the first probe, the power supply module, the positive detection plate and the liquid medium between the first probe and the positive detection plate form a closed current loop; the CPU control module is connected with the first probe and detects the current condition in the current loop, and meanwhile, the CPU control module is connected with the driving device and used for controlling the driving state of the driving device on the oil distribution funnel. The first probe is positioned on the oil distribution funnel and can move up and down along with the oil distribution funnel. The positive detection plate is arranged at the bottom of the oil-water separation cavity. The liquid in the oil-water separation cavity is divided into an upper oil layer and a lower water layer, the driving device drives the oil separating funnel to move downwards, and the first probe moves downwards along with the oil separating funnel. When the first probe enters the water layer again, the liquid medium between the first probe and the positive detection plate is changed from the oil layer and the water layer into the water layer, the current of the current loop is suddenly increased, the CPU control module detects the current change in the loop current, the oil separating funnel is stopped for a plurality of seconds through the driving device, the oil separating funnel is driven to move upwards to the highest point, and the oil collecting action of the oil separating funnel is repeated downwards after the oil separating funnel is stopped for a plurality of seconds. The intelligent oil collecting device provided by the invention realizes full-automatic oil collecting action, automatically detects and finishes oil-water separation, and is simple to operate and high in automation degree. In the above-mentioned intelligent oil collecting device, the connection between the first probe and the positive detection board and the power module may be: the first probe is connected with the anode of the power module, and the anode detection plate is connected with the cathode of the power module. As long as a current loop comprising a liquid medium can be realized.

As a preferable scheme of the present invention, a second probe is further disposed on the oil separating funnel, the second probe is located below the first probe, and the second probe is connected to a negative electrode of the power supply module; the CPU control module comprises a normal oil receiving module and a fine oil receiving module; the normal oil receiving module is connected with the second probe, and the fine oil receiving module is connected with the first probe. The intelligent oil collecting device with the structure is divided into two modes of fine oil collecting and normal oil collecting, when oil is normally collected, the oil inlet of the oil separating funnel is higher than a water layer, the collected oil layer is less in water impurities, and the quality of the oil is relatively higher; when the oil is finely collected, an oil inlet of the oil separating funnel is lower than a water layer; after collection, the oil layer on the water layer is thinner and the oil layer is collected more thoroughly. The two modes are matched to collect more and higher-quality grease. In the intelligent oil collecting device with the above structure, the second probe and the first probe are connected with the power module electrode uniformly, that is: the second probe and the first probe are simultaneously connected with the positive pole of the power supply or simultaneously connected with the negative pole of the power supply, so that the detection function can be realized.

As a preferred scheme of the invention, the driving device is a stepping motor, a bolt is arranged on the stepping motor, a nut is fixed on the oil separating funnel, and the nut is matched with the bolt; the stepping motor can drive the bolt to rotate around the axis of the bolt. The driving device with the structure has the advantages of simple structure, stable performance and low cost; and adopt screw thread mode drive oil separating funnel to reciprocate, the speed that the funnel reciprocated is slower, and oil separating funnel's the speed of reciprocating is controllable, and can not cause the liquid level to rock seriously, and the grease water impurity of collection is less, and the quality of grease is high.

As a preferable aspect of the present invention, the intelligent oil collecting apparatus further includes a guide device for limiting a circumferential movement of the oil-separating funnel. The intelligent oil collecting device with the structure can further reduce the influence of the oil separating funnel on page shaking in the moving process.

As a preferable aspect of the present invention, the guide means includes a guide bar; and the oil distribution funnel is provided with a positioning hole matched with the guide rod, and the guide rod penetrates through the positioning hole. The guiding device with the structure has the advantages of simple structure, low cost and strong guiding function.

As a preferable scheme of the invention, the guide rods and the positioning holes comprise a plurality of groups, and the plurality of groups of guide rods and the positioning holes are uniformly distributed around the oil distribution funnel. The plurality of groups means two or more groups. The guide rod and the positioning hole of the structure have the advantages that the acting force on the oil distribution funnel is uniform, the positioning effect is good, the local force of the guide rod on the positioning hole can be reduced, the stability of the device is higher, and the service life is longer.

As a preferable scheme of the present invention, the intelligent oil collecting device further comprises an intelligent blowdown device, the intelligent blowdown device comprises a blowdown valve and a third probe, and the blowdown valve and the third probe are respectively connected to the CPU control module; the third probe is connected with the negative electrode of the power supply module and is positioned above the positive detection plate. According to the intelligent oil collecting device with the structure, during pollution discharge, the medium between the third probe and the positive detection plate is a water layer. The blowoff valve is opened, and the water layer is followed drain outlet discharge sewage box, and the liquid level in the water oil separating chamber descends, and when the oil reservoir descends to third probe department, the circuit backward flow that third probe place diminishes suddenly, and CPU control module closes the blowoff valve immediately after detecting this phenomenon. The intelligent oil collecting device can realize full-automatic control of oil-water separation.

Compared with the prior art, the invention has the following beneficial effects:

1. the intelligent oil collecting device provided by the invention utilizes the driving device to drive the oil distributing funnel to move up and down to collect oil, the oil collecting efficiency is high, the quality of an oil layer is good, and the production cost of the intelligent oil collecting device is low.

2. According to the intelligent oil collecting device, the liquid medium is arranged in the current loop, the movement path of the oil separating funnel is detected and controlled by utilizing the great difference of the conductivity of the oil layer and the water layer, the full-automatic oil collecting action is realized, the oil-water separation is completed by automatic detection, the operation is simple, and the automation degree is high.

3. According to the intelligent oil collecting device, two modes of fine oil collecting and normal oil collecting are set to be matched for oil collecting, the collecting amount of oil is large, and the quality of the oil is higher.

4. The driving device of the intelligent oil collecting device is simple in structure, stable in performance and low in cost; adopt screw thread mode drive oil separating funnel to reciprocate, the speed that the funnel reciprocated is slower, and oil separating funnel's the speed of reciprocating is controllable, and can not cause the liquid level to rock seriously, and the grease water of collection is miscellaneous less, and the quality of grease is high.

5. The intelligent oil collecting device is additionally provided with the drainage layer pollution discharge control module, so that the full-automatic control of oil-water separation is realized. .

Description of the drawings:

FIG. 1 is a schematic view of the structure of the product of example 1;

fig. 2 is a schematic view of the structure of the oil-water separator according to example 1 (the oil separating funnel is located at the uppermost end).

Fig. 3 is a schematic view of the structure of the oil-water separator according to example 1 (oil separating funnel at the lowermost end).

The labels in the figure are: 1-upper cover, 2-main box body, 3-buffer box, 4-buffer plate, 5-sewage outlet, 6-first-stage gravel separating plate, 7-laminar flow plate, 8-second-stage gravel separating plate, 9-positive electrode detection plate, 10-overflow outlet, 11-oil pump, 12-bottom liquid level meter, 13-upper liquid level meter, 14-oil outlet, 15-oil outlet pipe, 16-guide rod, 17-oil separating funnel, 18-stepping motor, 19-first probe, 20-second probe, 21-liquid inlet, 22-water supplementing outlet, 23-separation cavity, 24-overflow cavity, 25-oil tank, 26-third probe, 27-bolt, 28-heating rod, 29-overflow plate, 30-oil separating plate, 31-nut, 32-positioning hole, 33-CPU control module, 34-power module and 35-sewage discharge valve.

Detailed Description

The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter of the present invention is not limited to the following examples, and any technique realized based on the contents of the present invention is within the scope of the present invention.

Example 1

Referring to fig. 1, the intelligent oil collecting device of the present embodiment includes an oil separating funnel 17, a CPU control module 33, a power module 34, and a stepping motor 18. The power module 34 is respectively connected with the CPU control module 33 and the stepping motor 18; the CPU control module 33 is connected to the stepper motor 18. The stepping motor 18 is provided with a bolt 27, the oil separating funnel 17 is fixed with a nut 31, and the nut 31 is matched and connected with the bolt 27. The stepper motor 18 may drive the bolt 27 to rotate about the axis of the bolt 27. And a positioning guide device is arranged on the oil distribution funnel 17. The positioning guide device comprises a guide rod 16 and a positioning hole 32, and the guide rod 16 penetrates through the positioning hole 32 and is matched with the positioning hole 32. The positioning hole 32 is disposed on the outer edge of the oil-separating funnel 17. The guide rods 17 and the positioning holes 32 comprise four groups, and the four groups of guide rods 16 and the positioning holes 32 are uniformly distributed around the oil distribution funnel 17. After the guide rod is fixed on the oil-water separator, the guide rod 16 and the positioning hole 32 can limit the circumferential movement of the oil separating funnel 17, the nut 31 is fixed, and when the bolt 27 rotates, the nut 31 moves up and down relative to the bolt 27 and drives the oil separating funnel 17 to move up and down. The upper end of the oil separating funnel 17 is a funnel oil inlet, and the lower end is a funnel oil outlet. The oil separating funnel 17 is provided with a first probe 19 and a second probe 20, and the first probe 19 is positioned above the second probe 20. The first probe 19 and the second probe 20 are respectively connected to the negative electrode of the power module 34. The intelligent oil collecting device further comprises a positive detection plate 9, and the positive detection plate 9 is connected with the positive electrode of the power module 34. The CPU control modules 33 are connected to circuit switches of the stepping motor 18, respectively. The CPU control module comprises a normal oil receiving module and a fine oil receiving module; the normal oil receiving module is connected with the second probe 20 through the ADC conversion module, and the fine oil receiving module is connected with the first probe 19 through the ADC conversion module. The intelligent oil collecting device also comprises an intelligent sewage device, the intelligent sewage device comprises a sewage valve 35 of a sewage outlet 5 and a third probe 26, and the sewage valve 35 and the third probe 26 are respectively connected with the CPU control module 33; the third probe 26 is connected to the negative pole of the power module 34. FIG. 1 is a schematic view of the product structure of example 1, in which 23 is a chamber wall of an oil-water separation chamber 23 of an oil-water separator.

As shown in FIG. 3, the oil-water separator for installing the intelligent oil collecting device comprises a main tank body 2, and an upper cover 1 is arranged at the upper end of the main tank body 2. An oil-water separation cavity 23, an overflow cavity 24 and an oil tank 25 are arranged in the main tank body 2. The oil-water separation chamber 23 is communicated with the liquid inlet 21 of the oil-water separator. Along the flowing direction of the liquid (from left to right in fig. 3), a buffer tank 3, a buffer plate 4, a first gravel separating plate 6, a laminar flow plate 7 and a second gravel separating plate 8 are sequentially arranged in the oil-water separation chamber 23. An oil separation plate 30 is arranged between the oil-water separation cavity 23 and the overflow cavity 24. The lower end and the bottom of the oil separation plate 30 are seamlessly connected to the inner wall of the main box body 2, the lower end of the oil separation plate 30 is provided with a water passing channel, and the water passing channel is communicated with the overflow cavity 24 and the oil-water separation cavity 23. The water layer at the bottom of the oil-water separation cavity 23 enters the overflow cavity 24 through the water passing channel at the lower end of the oil separation plate 30. An overflow plate 29 and an overflow outlet 10 are provided in the overflow chamber 24. The overflow plate 29 is located at a position between the oil barrier 30 and the overflow port 10. The overflow outlet 10 is located at the bottom of the overflow chamber 24. The lower end and both sides of the overflow plate 29 are seamlessly connected with the inner wall of the main tank 2. The upper end of the overflow plate 29 is lower than the top of the inner wall of the main tank 2. The height of the space between the upper end of the overflow plate 29 and the top of the inner wall of the main tank 2 is determined according to the design requirements. The overflow plate 29 can control the liquid level in the oil-water separation chamber 23. When the liquid level in the oil-water separation cavity 23 is higher than the overflow plate 29, the water layer enters the overflow cavity 24 through the water passage at the bottom of the oil separation plate 30, and then is discharged from the overflow port 10 through the upper end of the overflow plate 29. The oil tank 25 is internally provided with an oil pump 11, a bottom liquid level meter 12, an upper liquid level meter 13 and a heating rod 28. The oil pump 11 is arranged at the bottom of the oil tank 25, the bottom liquid level meter 12 is arranged at the lower end of the oil tank 25, the upper liquid level meter 13 is arranged at the upper end of the oil tank 25, and the heating rod 28 is fixed on the inner wall of the main box body 2 and is arranged in the middle of the oil tank 25. An oil outlet 14 is arranged on the main box body 2, and the oil well pump 11 is connected with the oil outlet 14 through a pipeline. Fig. 2 is a schematic view of an installation structure of the oil-water separator according to embodiment 1.

The intelligent oil collecting device of this embodiment, the installation on water oil separating machine is as follows: the stepping motor 18 is fixed to the upper cover 1. The CPU control module 33 and the power module 34 are installed at the side of the main body 2. The positive detection plate 9 and the third probe 26 are installed at the bottom of the oil-water separation chamber 23, and the third probe 26 is located above the positive detection plate 9. The oil inlet of the oil separating funnel 17 is communicated with the inside of the oil-water separating cavity 23, and the oil outlet of the oil separating funnel 17 is communicated with the oil tank 25 through the oil outlet pipe 15. Fig. 2 is a view showing the uppermost position of the oil-separating funnel 17; fig. 3 is a view showing the lowermost position of the oil-separating funnel 17.

The working process is as follows:

in the initial state, the oil-separating funnel 17 is in the uppermost position, as shown in fig. 2. The oil-water mixed liquid to be separated is filled into the oil-water separator through the liquid inlet 21. Meanwhile, the stepping motor 18 drives the bolt 27 to rotate, and the bolt 27 and the nut 31 cooperate to drive the oil distribution funnel 17 to move to the lowest point, as shown in fig. 3. The oil-water mixed liquid to be separated enters the buffer tank 3 from the liquid inlet 21 for speed reduction, and the liquid coming out of the buffer tank 3 is changed into an upper oil layer and a lower water layer which move slowly through speed reduction and primary layering. The liquid of preliminary layering further slows down and the layering through buffer plate 4, and the upper oil layer removes to the direction of minute oil funnel 17 through the oily passageway of crossing of buffer plate 4 upper end, and lower floor's water layer removes to overflow chamber 24 direction through the water passageway of buffer plate 4 lower extreme. The liquid which is initially layered slowly moves towards the overflow cavity 24 and the oil separating funnel 17 in the oil-water separating cavity 23, and is further layered to be divided into an upper oil layer and a lower water layer. In the moving process, solid suspended matters in the liquid are gradually precipitated to the bottom of the oil-water separation cavity 23, and the primary gravel separating plate 6, the laminar flow plate 7 and the secondary gravel separating plate 8 can collect the solid suspended matters, precipitates and other matters at the bottom of the oil-water separation cavity 23, so that the solid sediments are reduced from entering the overflow cavity 24, and the blockage is prevented. When the oil layer in the oil-water separation cavity 23 rises to the oil inlet of the oil separating funnel 17, the oil layer enters the oil separating funnel 17, and is sent into the oil tank 25 through the oil passage 15 by using the liquid level difference. In this process, the CPU control circuit can be in three detection states: (1) When the oil engine is in normal oil receiving state, the CPU control module detects the current condition of the circuit of the second probe 20. When the second probe 20 enters the water layer, the oil-separating funnel 17 is stopped for a certain period of time (the stop time is determined by design parameters, such as 2 s), moves upward and moves to the highest point, and then moves downward again until the second probe 20 enters the water layer, and is stopped for a certain period of time and moves upward. The oil recovery work under the normal oil recovery state is finished by reciprocating in this way. (2) When the oil engine is in fine oil collection, the CPU control module detects the current condition of the circuit of the first probe 19. The difference between the working mode of fine oil collection and the normal oil collection is that the normal oil collection uses the second probe 20 as a detection point, the fine oil collection uses the first probe 19 as a detection point, and the rest working modes and working principles are the same: that is, when the first probe 19 enters the water layer, the oil-separating funnel 17 is stopped for a certain period of time (the stop time is determined by design parameters, such as 2 s), moves upward and moves to the highest point, and then moves downward again until the first probe 19 enters the water layer, and is stopped for a certain period of time and moves upward. The oil recovery work in the fine oil recovery state is finished by reciprocating in the way. (3) a closing mode: after the fine oil collection, only a small amount of oil layer remains in the oil-water separation cavity 23. And the CPU control module is switched to a closing mode. In the melting mode, the oil-water separation cavity 23 is cleaned, and a drain valve of the drain outlet 5 is opened to clean and drain the oil-water separation cavity 23; at the same time, the CPU control module detects the current condition of the circuit in which the third probe 26 is located. The lower layer sewage layer and the settled solid residue in the oil-water separation cavity 23 are sent out of the oil-water separation cavity 23 through the sewage outlet 5. When the third probe 26 is detected to leave the water layer (after entering the water layer or the air layer), the CPU control module closes the drain valve of the drain outlet 5, so that the oil layer in the oil-water separation chamber 23 can be prevented from being sent out of the oil-water separation chamber 23.

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

Claims

1. An intelligence oil collecting device which characterized in that: comprises an oil separating funnel and a driving device; the upper end of the oil separating funnel is provided with a funnel oil inlet, and the lower end of the oil separating funnel is provided with a funnel oil outlet; the driving device can drive the oil distribution funnel to move up and down; the intelligent oil collecting device also comprises a CPU control module for controlling the lifting position of the oil separating funnel, wherein the CPU control module comprises a normal oil collecting module and a fine oil collecting module;

the intelligent oil collecting device also comprises a power module, a first probe and an anode detection plate; the power supply module is respectively connected with the CPU control module and the driving device; the first probe is connected with the negative electrode of the power supply module, and the positive detection plate is connected with the positive electrode of the power supply module; the first probe is positioned on the oil separating funnel and connected with the CPU control module; the CPU control module is connected with the driving device;

the oil distribution funnel is also provided with a second probe, the second probe is positioned below the first probe, and the second probe is connected with the negative electrode of the power supply module; the normal oil receiving module is connected with the second probe, and the fine oil receiving module is connected with the first probe;

the intelligent oil collecting device also comprises an intelligent sewage device, the intelligent sewage device comprises a sewage valve and a third probe, and the sewage valve and the third probe are respectively connected with the CPU control module; the third probe is connected with the negative electrode of the power supply module and is positioned above the positive detection plate, and a medium between the third probe and the positive detection plate is a water layer during pollution discharge.

2. The intelligent oil collection device of claim 1, wherein: the intelligent oil collecting device further comprises a guide device, and the guide device is used for limiting the circumferential movement of the oil separating funnel.

3. The intelligent oil collection device of claim 2, wherein: the guide device comprises a guide rod; and the oil distribution funnel is provided with a positioning hole matched with the guide rod, and the guide rod penetrates through the positioning hole.

4. The intelligent oil collection device of claim 3, wherein: the guide rods and the positioning holes comprise multiple groups, and the multiple groups of guide rods and the positioning holes are uniformly distributed around the oil distribution funnel.