Metal wire drawing machine oil supply system with replaceable wire drawing oil

Abstract

The present invention provides an oil supply system for a metal wire drawing machine with replaceable wire drawing oil, which includes a metal wire drawing machine, an oil tank, an oil pump, an oil supply pipe and an oil return pipe. A circulation loop is formed by connecting the metal wire drawing machine and the oil tank through the oil supply pipe, the oil pump and the oil return pipe. The number of the oil tanks is at least two and they are arranged in series between the metal wire drawing machine and the oil tank. Adjacent two oil tanks are detachably connected through one-way valves. Each oil tank is provided with a partition plate that divides the oil tank into an oil inlet side and an oil outlet side. Through holes for the wire drawing oil to pass through are opened in the upper part of each partition plate. The advantages of the present invention lie in a brand-new metal wire drawing oil circulating oil supply system with gravity sedimentation of metal powder, centrifugal separation of metal particles and gradable replacement. This system can extend the service life of the wire drawing oil by 2-3 times and greatly save the wire drawing cost.

Description

Technical Field

[0001] The present invention relates to the field of wire drawing equipment, and particularly to an oil supply system for a metal wire drawing machine capable of replacing wire drawing oil. Background Art

[0002] The traditional metal wire drawing lubricating oil tank is an integral whole, with only one oil tank (see Figure 1 the standard oil supply system diagram of the metal wire drawing machine). According to the conventional process, the standard metal wire drawing machine is only equipped with one wire drawing oil tank and one oil supply pump. The lubricating oil after lubrication returns to the oil tank for reuse naturally by the inclination of the oil return pipe. After being used for a period of time, due to the precipitation and accumulation of fine metal powders generated during the wire drawing process in the oil tank, the viscosity of the wire drawing oil becomes greater and the fluidity becomes worse. When the proportion of metal powders in the wire drawing oil exceeds a certain ratio, the wire drawing oil loses its normal fluidity, and the lubrication effect will be greatly reduced. At this time, it is necessary to replace the new wire drawing oil. The replacement of wire drawing oil is a rather troublesome task. For example, for the large aluminum wire drawing machine in the wire and cable industry, the volume of the standard oil tank is about 10 cubic meters. When the weight of the drawn aluminum single wire exceeds 3000 tons, the proportion of aluminum particle powders in the wire drawing oil reaches about 25%, showing a relatively high viscosity and losing the fluidity required for wire drawing lubrication. It is necessary to be scrapped as a whole, and the waste oil containing excessive metal powders in the lubricating pool is taken out and new oil is replaced. At present, taking out the waste oil from the oil tank entirely depends on manual operation, which is a dirty and laborious job. On the other hand, the taken-out wire drawing oil needs to be processed by a qualified specialized environmental protection company. In some areas, the cost of processing one ton of oil has exceeded 6000 yuan. Summary of the Invention

[0003] The present invention provides an oil supply system for a metal wire drawing machine capable of replacing wire drawing oil, which can extend the service life of wire drawing oil and greatly save wire drawing costs.

[0004] The technical solution of the present invention is realized as follows: An oil supply system for a metal wire drawing machine capable of replacing wire drawing oil includes a metal wire drawing machine, an oil tank, an oil pump, an oil supply pipe, and an oil return pipe. The metal wire drawing machine and the oil tank are connected into a circulation loop through the oil supply pipe, the oil pump, and the oil return pipe. The number of oil tanks is at least two and they are arranged in series between the metal wire drawing machine and the oil tank. Adjacent two oil tanks are detachably connected through a one-way valve. Each oil tank is provided with a partition plate that divides the oil tank into an oil inlet side and an oil outlet side. A through hole for the wire drawing oil to pass through is opened at the upper part of each partition plate.

[0005] Preferably, a centrifugal filter is provided on the oil tank, and the centrifugal filter is arranged on the oil inlet side of the partition plate.

[0006] Preferably, the placement position of the oil tank is lower than the height of the metal wire drawing machine, and the end of the oil return pipe connected to the metal wire drawing machine is higher than the end connected to the oil tank.

[0007] Preferably, there are at least two fuel tanks, and the passage direction of the one-way valve between the fuel tanks is the same as the flow direction of the return oil pipe.

[0008] Preferably, the centrifugal filter is arranged on the first fuel tank connected to the return oil pipe.

[0009] Preferably, there are three fuel tanks, which are the first-stage fuel tank, the second-stage fuel tank, and the third-stage fuel tank in sequence after passing through the return oil pipe from the wire drawing machine; there is a one-way valve between the first-stage fuel tank and the second-stage fuel tank, and between the second-stage fuel tank and the third-stage fuel tank respectively.

[0010] Preferably, the partition plate is vertically arranged inside the fuel tank near the oil outlet side, and the oil inlet side is twice the space occupied by the oil outlet side.

[0011] Preferably, there are two through holes on the partition plate, and the through holes are round holes with a diameter of φ150mm.

[0012] Compared with the prior art, the advantages of the present invention lie in a brand-new metal drawing oil circulating supply system with gravity sedimentation of metal powder, centrifugal separation of metal particles, and hierarchical replacement. This system can extend the service life of the drawing oil by 2-3 times and greatly save the drawing cost. Description of the Drawings

[0013] Figure 1 is a diagram of a traditional metal drawing oil circulating system;

[0014] Figure 2 is the system structure diagram of the present invention;

[0015] Figure 3 is the working principle diagram of the series-connected fuel tanks for three-stage precipitation of metal powder of the present invention;

[0016] Figure 4 is Figure 2 the partial enlarged view of the partition plate at part A in

[0017] In the figure: 1. First-stage fuel tank; 2. Second-stage fuel tank; 3. Third-stage fuel tank; 4. One-way valve; 5. Metal powder; 6. Partition plate; 7. Centrifugal filter; 8. Drawing oil; 9. Oil pump; 10. Supply oil pipe; 11. Return oil pipe; 12. Wire drawing machine; 13. Through hole. Detailed Embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Example: See Figure 2 、 Figure 3 and Figure 4 , a metal wire drawing machine 12 oil supply system with replaceable wire drawing oil 8, including a metal wire drawing machine 12, an oil tank, an oil pump 9, an oil supply pipe 10 and an oil return pipe 11, the metal wire drawing machine 12 and the oil tank are connected to form a circulation loop through the oil supply pipe 10, the oil pump 9 and the oil return pipe 11, the number of the oil tanks is at least two and they are arranged in series between the metal wire drawing machine 12 and the oil tank, the two adjacent oil tanks are detachably connected by a one-way valve 4, each oil tank is provided with an isolation plate 6 that divides the oil tank into two parts, the oil inlet side and the oil outlet side, and the upper part of each isolation plate 6 is provided with a through hole 13 for the wire drawing oil 8 to pass through.

[0020] Preferably, a centrifugal filter 7 is provided on the oil tank, and the centrifugal filter 7 is arranged on the oil inlet side of the isolation plate 6.

[0021] Preferably, the oil tank is placed at a position lower than the height of the metal wire drawing machine 12, and the end of the oil return pipe 11 connected to the metal wire drawing machine 12 is higher than the end connected to the oil tank.

[0022] Preferably, there are at least two oil tanks, and the passage direction of the one-way valve 4 between the oil tanks is consistent with the flow direction of the oil return pipe 11.

[0023] Preferably, the centrifugal filter 7 is arranged on the first oil tank connected to the oil return pipe 11.

[0024] Preferably, there are three oil tanks, which are level I oil tank 1, level II oil tank 2 and level III oil tank 3 after passing through the return oil pipe 11 from the metal wire drawing machine 12; a one-way valve 4 is provided between level I oil tank 1 and level II oil tank 2, and between level II oil tank 2 and level III oil tank 3.

[0025] The number of oil tank stages is not limited to three, and can be multiple stages, which is set according to the actual situation of the metal wire drawing machine 12.

[0026] Preferably, the isolation plate 6 is vertically arranged in the oil tank close to the oil outlet side, and the space occupied by the oil inlet side is twice that of the oil outlet side.

[0027] Preferably, there are two through holes 13 on the isolation plate 6, and the through holes 13 are circular holes with a diameter of φ150 mm.

[0028] The wire drawing oil 8 is continuously supplied to the metal wire drawing machine 12 by the oil pump 9; after being used by the wire drawing machine 12, the wire drawing oil 8 naturally returns to the Class I oil tank 1 due to the inclination of the return oil pipe 11; the metal powder 5 contained in the return oil is extracted by the centrifugal filter 7, and most of the metal powder 5 is filtered into a muddy solid for recovery; the remaining small amount of metal powder 55 is settled to the bottom of the oil tank by gravity;

[0029] In the Class-I fuel tank 1, there is a partition plate 6 which divides the fuel tank into left and right parts. There are two round holes with a diameter of φ150mm in the upper part of the partition plate 6 (see Figure 3 ). The drawn wire oil 8 after filtration and sedimentation in the right part passes through the round holes to the left part of the Class-I fuel tank 1;

[0030] The drawn wire oil 8 in the upper left part of the Class-II fuel tank 22 enters the Class-III fuel tank 3 through the one-way valve 4 (the structure of the Class-III fuel tank 33 is the same as that of the Class-I fuel tank 1). In the right part of the Class-III fuel tank 3, the metal powder 5 makes the final sedimentation under the action of gravity. The drawn wire oil 8 after the final sedimentation treatment enters the left part of the Class-III fuel tank 3 through the two round holes with a diameter of φ150mm on the partition plate 6, and is pumped into the supply oil pipe 10 by the oil pump 9 for use by the wire drawing machine 12. The oil containing the metal powder 5 after being used by the wire drawing machine 12 returns to the right part of the Class-I fuel tank 1 through the return oil pipe 11, thus realizing the circulating filtration and oil supply of the system.

[0031] Usually, a high-speed wire drawing machine is only standard-equipped with a fuel tank with a capacity of about 10 cubic meters. The oil is changed once every 3000 tons of aluminum single wire drawn. For drawing 30000 tons of aluminum single wire, the oil is changed 10 times, 10 cubic meters each time, and the total amount of new oil replaced is 100 cubic meters. Calculated at 80.9 tons per cubic meter of drawn wire oil and 15,000 yuan per ton, the cost of drawing 30000 tons of wire is 1.215 million yuan, and the cost of the drawn wire oil 8 per ton of aluminum single wire is 40.5 yuan / ton.

[0032] A metal wire drawing machine 12 oil supply system with an effective total volume of 10 cubic meters for replacing the drawn wire oil 8 is supplied to a high-speed large aluminum wire drawing machine. After every 5000 tons of aluminum single wire are drawn, the Class-I fuel tank 1 is hoisted out for cleaning. The Class-II fuel tank 2 is hoisted out for cleaning every 15000 tons of wire drawn, and the Class-III fuel tank 3 is hoisted out for cleaning every 30000 tons of wire drawn. Under the total amount of 30000 tons of aluminum single wire drawn, the total number of times of cleaning the fuel tanks is 6 times for the Class-I fuel tank 1, 2 times for the Class-II fuel tank 2, and 1 time for the Class-III fuel tank 3, totaling 9 times. Calculated at 3.3 cubic meters of new oil replenished each time, the total amount of new oil replenished is 30 cubic meters.

[0033] Calculated at 80.9 tons per cubic meter of drawn wire oil and 15,000 yuan per ton, the cost of drawing 30000 tons of wire is 405,000 yuan, and the cost of the drawn wire oil 8 per ton of aluminum single wire is 13.5 yuan / ton.

[0034] The operating cost of the metal wire drawing machine 12 oil supply system for replacing the drawn wire oil 8 is only 30% of that of the single fuel tank oil supply system. It can save 27 yuan per ton of single wire drawn, and reduce the carbon emission by 1.8kg×3.06 = 5.5kg. Calculated based on a medium-sized cable enterprise drawing 30000 tons of aluminum single wire annually, it can save 810,000 yuan in funds annually and reduce the carbon emission by 165,000 tons.

[0035] The volume of each level of fuel tank in the present invention is not limited, and the total volume is not limited to 10 cubic meters.

[0036] The wire drawing machine 12 to which the present invention supplies oil is not limited to one, and can be a wire drawing machine cluster composed of two or more wire drawing machines.

[0037] The advantages of the present invention are as follows:

[0038] (1) In the system, the wire drawing oil 8 containing metal powder 5 is filtered through a centrifuge once to remove most of the metal powder 5 in the wire drawing oil 8; through three fuel tanks for three-stage gravity sedimentation filtration, the metal powder 5 remaining in the wire drawing oil 8 is precipitated to the bottom of the fuel tank;

[0039] (2) The advantage of using one-way valves 4 to connect each level of fuel tank is that when the oil level of a certain level of fuel tank in each level of fuel tank changes, the wire drawing oil 8 after filtration and sedimentation treatment will not flow back (for example, when the operating speed of the centrifugal filter 7 equipped in the first-level fuel tank 1 is too fast, or when the oil return flow rate of the oil return pipe 11 is too small, the oil level of the first-level fuel tank 1 may be lower than the oil level of the second-level fuel tank 2, resulting in backflow).

[0040] (3) The series use of three-level fuel tanks divides a traditional fuel tank into three. Usually, the metal powder 5 in the first-level fuel tank 1 will increase with the running time of the wire drawing machine 12, and the accumulation thickness will gradually increase. After a certain period of time, it needs to be cleaned. At this time, only the first-level fuel tank 1 needs to be lifted out of the system, cleaned and then restored to its original position. For the oil missing after cleaning the first-level fuel tank 1, the system can be run first, and new oil can be slowly added to the third-level fuel tank 33. In this way, only one-third of the waste oil rich in metal powder 5 needs to be cleaned each time, and after adding one-third of the volume of new oil, the system can be used as normal.

[0041] (4) Generally, as the use time of the wire drawing oil 8 extends, there will also be accumulations of precipitated wire drawing oil 8 at the bottoms of the second-level fuel tank 2 and the third-level fuel tank 33, which also need to be cleaned at an appropriate time. However, the cleaning interval will be very long. This system can extend the service life of the wire drawing oil 8 by 2-3 times and greatly save the wire drawing cost.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A metal wire drawing machine oil supply system with replaceable wire drawing oil, comprising a metal wire drawing machine, an oil tank, an oil pump, an oil supply pipe and an oil return pipe. The metal wire drawing machine and the oil tank are connected into a circulation loop through the oil supply pipe, the oil pump and the oil return pipe. It is characterized in that: The number of fuel tanks is three, and they are arranged in series between the wire drawing machine and the oil pump. After passing through the return oil pipe from the wire drawing machine, they are the first-stage fuel tank, the second-stage fuel tank, and the third-stage fuel tank in sequence. A one-way valve is provided between the first-stage fuel tank and the second-stage fuel tank, and between the second-stage fuel tank and the third-stage fuel tank. Adjacent fuel tanks are detachably connected through the one-way valve. A partition plate that divides the fuel tank into an oil inlet side and an oil outlet side is provided in each fuel tank. A through hole for the wire drawing oil to pass through is opened at the upper part of each partition plate. A centrifugal filter is provided on the first fuel tank connected to the return oil pipe, and the centrifugal filter is arranged on the oil inlet side of the partition plate. The placement position of the fuel tank is lower than the height of the wire drawing machine, and the end of the return oil pipe connected to the wire drawing machine is higher than the end connected to the fuel tank. The passage direction of the one-way valve between the fuel tanks is the same as the flow direction of the return oil pipe.

2. The oil supply system for a metal wire drawing machine with replaceable wire drawing oil according to claim 1, wherein: The partition plate is vertically arranged on the side close to the oil outlet in the fuel tank, and the oil inlet side is twice the space occupied by the oil outlet side.

3. The metal wire drawing machine oil supply system with replaceable wire drawing oil according to claim 2, characterized in that: There are two through holes on the partition plate, and the through holes are round holes with a diameter of φ150mm.

Images