Close-packed section pinch roll lubricating oil recycling system

Abstract

The utility model relates to the technical field of lubricating oil recovery and circulation, in particular to a close-packed section pinch roll lubricating oil recovery and circulation system which comprises a pinch roll mechanism, an oil storage tank, a centrifugal pump, an oil filter, a cooling tank, an oil-gas lubricating pump, an oil-gas distributor and a valve bank. The pinch roll body comprises an oil inlet end and an oil outlet end, and the oil outlet end of the pinch roll body is communicated with the inlet end of the oil storage tank; through the arrangement of the oil filtering loop, lubricating oil flowing out of the pinch roll can be filtered, the situation that impurities are mixed into the lubricating oil, and consequently the stability of a system is affected is avoided, the lubricating oil flows back to a pipeline inlet through the oil filtering loop, the function of repeatedly filtering part of the lubricating oil is achieved, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lubricating oil recovery and circulation, in particular to a lubricating oil recovery and circulation system for close-packed segment clamping rollers. Background Art

[0002] The existing lubricating oil filling and draining systems generally only use air sources, one-way valves and other structures for pipeline connection, and set up devices such as buffer tanks to improve the stability of discharge, thereby achieving the function of stable discharge of lubricating oil. However, for functions such as circulation and recovery, it is not disclosed what technical solutions should be adopted to ensure the stability of the recycling of lubricating oil and the smoothness of the pipeline. At the same time, the existing system also does not disclose how the lubricating oil system for the nip roller should be adjusted and designed to meet the requirements of circulating lubrication of the nip roller;

[0003] The Chinese patent document with the announcement number CN218439676U discloses an oil discharge mechanism of a compressor pump group lubricating oil circulation system, which can effectively and quickly discharge a large amount of lubricating oil remaining in the lubricating oil main pipe of the compressor pump group lubricating oil circulation system to the oil tank for recycling before maintenance, greatly reducing the amount of lubricating oil leakage during the maintenance process, but does not disclose what technical solution should be adopted to ensure the stability of the recycling of lubricating oil;

[0004] The Chinese patent document with the publication number CN113267067B discloses a cooling water circulation system for lubricating oil production, which can effectively improve the cooling efficiency of lubricating oil and can recycle cooling water to avoid the waste of water resources. However, it does not disclose how to adjust and design the lubricating oil system for the nip roller to meet the requirements of circulating lubrication of the nip roller.

[0005] In summary, how to design a close-packed section nip roller lubricating oil recovery circulation system to ensure the stability of the lubricating oil recycling and the smooth flow of the pipeline to meet the requirements of nip roller circulation lubrication has become a problem to be solved. Utility Model Content

[0006] The utility model aims to provide a close-packed segment pinch roller lubricating oil recovery circulation system to solve the existing problem of how to design a close-packed segment pinch roller lubricating oil recovery circulation system to ensure the stability of the recycling of lubricating oil and the smoothness of pipelines to meet the requirements of pinch roller circulation lubrication.

[0007] In order to achieve the above objectives, the following technical solutions are provided:

[0008] A close-packed segment nip roller lubricating oil recovery circulation system is used to circulate the lubricating oil injected into the nip roller, comprising: a nip roller mechanism, an oil storage tank, a centrifugal pump, an oil filter, a cooling tank, an oil-gas lubrication pump, an oil-gas distributor and a valve group, wherein the nip roller mechanism comprises a nip roller body, which is a hollow cylindrical structure and comprises an oil inlet end and an oil outlet end, and the oil outlet end of the nip roller body is connected to the inlet end of the oil storage tank;

[0009] The valve group includes a ball valve, a regulating valve 1 and a first valve;

[0010] The outlet end of the oil storage tank is connected to a ball valve, the other end of the ball valve is connected to a centrifugal pump, the centrifugal pump is used to pump the oil in the oil storage tank outward, the outlet end of the centrifugal pump is connected to a first valve, the other end of the first valve is connected to an oil filter, one end of the oil filter is connected to the inlet end of the cooling tank;

[0011] The other end of the oil filter is also connected to the regulating valve 1, and the regulating valve 1 is connected to the inlet end of the centrifugal pump to form an oil filtering circuit;

[0012] The valve group also includes a check valve 1, the outlet end of the cooling tank is connected to the inlet end of the check valve 1, the outlet end of the check valve 1 is connected to the inlet end of the oil-gas lubrication pump, the oil-gas lubrication pump is connected to an oil-gas distributor, and the other two ends of the oil-gas distributor are connected to the oil inlet end of the clamping roller body at one end of which is discharged outside the system.

[0013] Preferably, the circulation system also includes a cooling liquid source, a liquid pump and a liquid cooler, the valve group also includes a second valve, the cooling liquid source is connected to the liquid pump, the outlet end of the liquid pump is connected to the second valve, the second valve is connected to the cooling liquid inlet of the cooling tank, the cooling liquid outlet of the cooling tank is connected to the liquid cooler, one end of the liquid cooler is connected to the cooling tank, and the other end is connected to the inlet end of the second valve to form a cooling circuit.

[0014] Preferably, the circulation system further comprises a nitrogen source, a mixer, a gas storage tank, a gas cooler and an air pump, the valve group further comprises a third valve, a three-way valve, a second regulating valve and a second check valve, the oil storage tank further comprises an air outlet, and the air outlet of the oil storage tank is connected to the third valve;

[0015] The third valve is communicated with a first inlet of the three-way valve, the nitrogen source is communicated with a second inlet of the three-way valve, and the outlet of the three-way valve is communicated with a mixer;

[0016] The mixer is connected to the inlet end of the second check valve, the outlet end of the second check valve is connected to the inlet end of the gas storage tank, the outlet end of the gas storage tank is connected to the gas cooler, and the gas cooler is connected to the air pump;

[0017] The outlet end of the air pump is provided with two branches, which are respectively connected with the inlet end of the air storage tank and the inlet end of the second regulating valve. The outlet end of the second regulating valve is connected with the inlet end of the oil-gas lubrication pump.

[0018] Preferably, the clamping roller mechanism also includes a roller frame, the clamping roller body also includes a core shaft, the core shaft is limited on the roller frame, the oil inlet end and the oil outlet end of the clamping roller body are respectively opened at the two ends of the core shaft, the clamping roller mechanism also includes an oil return pipe and an oil delivery pipe, the oil outlet end of the clamping roller body is connected to the oil return pipe, and the oil return pipe is connected to the oil delivery pipe for circulating lubricating oil.

[0019] Preferably, the oil pipeline is arranged to be inclined downward at 5° along the horizontal plane.

[0020] Preferably, the clamping roller body also includes a driving wheel, a roller sleeve, a top plug 1, a top plug 2, a bearing, and a support frame. The driving wheel is bolted to the roller sleeve, the inner ring end and the outer ring end of the bearing are respectively abutted against the core shaft and the roller sleeve, the space between the core shaft and the roller sleeve forms an oil delivery cavity, the top plug 1 and the top plug 2 are respectively arranged on both sides of the top and bottom of the bearing, and the support frame is clamped in the driving wheel, the outer side of which is abutted against the driving wheel, and the inner side is abutted against the core shaft.

[0021] The beneficial effects of the utility model are:

[0022] 1. The utility model provides an oil filter circuit, so that the lubricating oil flowing out of the clamping roller can be filtered, thereby preventing impurities from mixing into the lubricating oil and thus adversely affecting the stability of the system. The oil filter circuit returns the lubricating oil to the pipeline inlet, thereby achieving the function of repeated filtration of part of the lubricating oil and improving the filtering effect.

[0023] 2. The utility model sets a cooling circuit, and the lubricating oil flowing out of the clamping roller is cooled by the coolant in the cooling tank. The coolant circulates through the cooling tank and flows to the liquid cooler, and flows back to the inlet end of the second valve after cooling again, thereby realizing a circulating cooling operation;

[0024] 3. The utility model sets a gas component in the pipeline system, which not only discharges and utilizes the gas in the oil storage tank as a supplementary gas source for nitrogen, but also mixes the gas in the oil storage tank with external nitrogen through the setting of the gas pipeline line to form a mixed gas. After the mixed gas is circulated and cooled, it is used to pressurize and inject oil into the nip roller, and the excess gas is discharged outside the system, which not only improves the efficiency but also ensures the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a pipeline schematic diagram of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the clamping roller mechanism;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the structure at center A;

[0028] Figure 4 It is a structural schematic diagram of the clamping roller body;

[0029] Figure 5 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0030] In the figure:

[0031] 101- oil storage tank, 102- centrifugal pump, 103- oil filter, 104- cooling tank, 105- oil and gas lubrication pump, 106- oil and gas distributor, 107- cooling liquid source, 108- liquid pump, 109- liquid cooler, 110- nitrogen source, 111- mixer, 112- gas storage tank, 113- gas cooler, 114- air pump, 115- gas outlet;

[0032] 201-ball valve, 202-regulating valve 1, 203-first valve, 204-check valve 1, 205-second valve, 206-third valve, 207-three-way valve, 208-regulating valve 2, 209-check valve 2;

[0033] 301-clamping roller body, 302-oil inlet end, 303-oil outlet end, 304-roller frame, 305-oil return pipe, 306-oil delivery pipe, 307-core shaft, 308-driving wheel, 309-roller sleeve, 310-top plug one, 311-top plug two, 312-bearing, 313-support frame, 314-oil delivery chamber. DETAILED DESCRIPTION

[0034] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions of the schematic diagrams in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-5 As shown, a close-packed segment nip roller lubricating oil recovery circulation system is used to circulate the lubricating oil injected into the nip roller, comprising: a nip roller mechanism, an oil storage tank 101, a centrifugal pump 102, an oil filter 103, a cooling tank 104, an oil-gas lubrication pump 105, an oil-gas distributor 106 and a valve group, the nip roller mechanism comprises a nip roller body 301, the nip roller body 301 is a hollow cylindrical structure, which comprises an oil inlet end 302 and an oil outlet end 303, and the oil outlet end 303 of the nip roller body 301 is connected to the inlet end of the oil storage tank 101;

[0036] The valve group includes a ball valve 201, a regulating valve 202 and a first valve 203;

[0037] The outlet end of the oil storage tank is connected to the ball valve 201, the other end of the ball valve 201 is connected to the centrifugal pump 102, the centrifugal pump 102 is used to pump the oil in the oil storage tank 101 outward, the outlet end of the centrifugal pump 102 is connected to the first valve 203, the other end of the first valve 203 is connected to the oil filter 103, one end of the oil filter 103 is connected to the inlet end of the cooling tank 104;

[0038] The other end of the oil filter 103 is also connected to the regulating valve 202, and the regulating valve 202 is connected to the inlet end of the centrifugal pump 102 to form an oil filtering loop;

[0039] The valve group also includes a check valve 204, the outlet end of the cooling tank 104 is connected to the inlet end of the check valve 204, the outlet end of the check valve 204 is connected to the inlet end of the oil-gas lubrication pump 105, the oil-gas lubrication pump 105 is connected to the oil-gas distributor 106, and the other two ends of the oil-gas distributor 106 are discharged to the outside of the system at one end and connected to the oil inlet end 302 of the clamping roller body 301 at the other end;

[0040] By setting up the oil filter circuit, the lubricating oil flowing out of the clamping roller can be filtered, avoiding impurities mixed in the lubricating oil and thus adversely affecting the stability of the system. Moreover, the oil can be refluxed to the pipeline inlet through the oil filter circuit, realizing the function of repeated filtration of part of the lubricating oil and improving the filtering effect.

[0041] In some embodiments, the circulation system further includes a cooling liquid source 107, a liquid pump 108 and a liquid cooler 109, the valve group further includes a second valve 205, the cooling liquid source 107 is connected to the liquid pump 108, the outlet end of the liquid pump 108 is connected to the second valve 205, the second valve 205 is connected to the cooling liquid inlet of the cooling tank 104, the cooling liquid outlet of the cooling tank 104 is connected to the liquid cooler 109, one end of the liquid cooler 109 is connected to the cooling tank 104, and the other end is connected to the inlet end of the second valve 205, forming a cooling circuit;

[0042] By setting the cooling circuit, the lubricating oil flowing out of the nip roller is cooled by the coolant in the cooling tank 104, and the coolant circulates through the cooling tank 104 and flows to the liquid cooler 109, and flows back to the inlet end of the second valve 205 after cooling again, thereby realizing the circulating cooling operation;

[0043] In some embodiments, the circulation system further includes a nitrogen source 110, a mixer 111, a gas storage tank 112, a gas cooler 113 and an air pump 114, the valve group further includes a third valve 206, a three-way valve 207, a second regulating valve 208, and a second check valve 209, and the oil storage tank 101 further includes an outlet 115, and the outlet 115 of the oil storage tank 101 is connected to the third valve 206;

[0044] The third valve 206 is communicated with a first inlet of the three-way valve 207, the nitrogen source 110 is communicated with a second inlet of the three-way valve 207, and the outlet of the three-way valve 207 is communicated with the mixer 111;

[0045] The mixer 111 is connected to the inlet end of the second check valve 209, the outlet end of the second check valve 209 is connected to the inlet end of the gas storage tank 112, the outlet end of the gas storage tank 112 is connected to the gas cooler 113, and the gas cooler 113 is connected to the air pump 114;

[0046] The outlet of the air pump 114 is provided with two branches, which are respectively connected to the inlet of the air storage tank 112 and the inlet of the second regulating valve 208. The outlet of the second regulating valve 208 is connected to the inlet of the oil-gas lubrication pump 105.

[0047] By setting a gas component in the pipeline system, the gas in the oil storage tank 101 is discharged and utilized as a supplementary gas source of nitrogen. In addition, by setting the gas pipeline route, the gas in the oil storage tank 101 is mixed with the external nitrogen as a mixed gas. After the mixed gas is circulated and cooled, it is used to pressurize and inject oil into the nip roller, and the excess gas is discharged outside the system, which not only improves the efficiency but also ensures the safety of the system.

[0048] In some embodiments, the roller clamping mechanism further includes a roller frame 304, the roller clamping body 301 further includes a core shaft 307, the core shaft 307 is limitedly arranged on the roller frame 304, the oil inlet end 302 and the oil outlet end 303 of the roller clamping body 301 are respectively opened at both ends of the core shaft 307, the roller clamping mechanism further includes an oil return pipe 305 and an oil delivery pipe 306, the oil outlet end 303 of the roller clamping body 301 is connected to the oil return pipe 305, and the oil return pipe 305 is connected to the oil delivery pipe 306 for circulating lubricating oil;

[0049] In some embodiments, the oil delivery pipe 306 is arranged to be inclined downward at 5° along the horizontal plane;

[0050] In some embodiments, the clamping roller body 301 also includes a driving wheel 308, a roller sleeve 309, a top plug 1 310, a top plug 2 311, a bearing 312, and a support frame 313. The driving wheel 308 is bolted to the roller sleeve 309. The inner ring end and the outer ring end of the bearing 312 are respectively abutted against the core shaft 307 and the roller sleeve 309. The space between the core shaft 307 and the roller sleeve 309 forms an oil delivery cavity 314. The top plug 1 310 and the top plug 2 311 are respectively arranged on the top and bottom sides of the bearing 312. The support frame 313 is clamped in the driving wheel 308, and its outer side is abutted against the driving wheel 308, and its inner side is abutted against the core shaft 307.

Claims

1. A close-packed section nip roller lubricating oil recovery and circulation system, used for circulating the lubricating oil injected into the nip roller, characterized in that: include: A clamping roller mechanism, an oil storage tank, a centrifugal pump, an oil filter, a cooling tank, an oil-gas lubrication pump, an oil-gas distributor and a valve group, wherein the clamping roller mechanism comprises a clamping roller body, which is a hollow cylindrical structure and comprises an oil inlet end and an oil outlet end, and the oil outlet end of the clamping roller body is connected to the inlet end of the oil storage tank; The valve group includes a ball valve, a regulating valve 1 and a first valve; The outlet end of the oil storage tank is connected to a ball valve, the other end of the ball valve is connected to a centrifugal pump, the centrifugal pump is used to pump the oil in the oil storage tank outward, the outlet end of the centrifugal pump is connected to a first valve, the other end of the first valve is connected to an oil filter, one end of the oil filter is connected to the inlet end of the cooling tank; The other end of the oil filter is also connected to the regulating valve 1, and the regulating valve 1 is connected to the inlet end of the centrifugal pump to form an oil filtering circuit; The valve group also includes a check valve 1, the outlet end of the cooling tank is connected to the inlet end of the check valve 1, the outlet end of the check valve 1 is connected to the inlet end of the oil-gas lubrication pump, the oil-gas lubrication pump is connected to an oil-gas distributor, and the other two ends of the oil-gas distributor are connected to the oil inlet end of the clamping roller body at one end of which is discharged outside the system.

2. The close-packed segment nip roller lubricating oil recovery and circulation system according to claim 1 is characterized in that: The circulation system also includes a cooling liquid source, a liquid pump and a liquid cooler. The valve group also includes a second valve. The cooling liquid source is connected to the liquid pump, and the outlet end of the liquid pump is connected to the second valve. The second valve is connected to the cooling liquid inlet of the cooling tank, and the cooling liquid outlet of the cooling tank is connected to the liquid cooler. One end of the liquid cooler is connected to the cooling tank, and the other end is connected to the inlet end of the second valve to form a cooling circuit.

3. The close-packed segment nip roller lubricating oil recovery and circulation system according to claim 2 is characterized in that: The circulation system further includes a nitrogen source, a mixer, a gas storage tank, a gas cooler and an air pump, the valve group further includes a third valve, a three-way valve, a second regulating valve and a second check valve, the oil storage tank further includes an air outlet, and the air outlet of the oil storage tank is connected to the third valve; The third valve is communicated with a first inlet of the three-way valve, the nitrogen source is communicated with a second inlet of the three-way valve, and the outlet of the three-way valve is communicated with a mixer; The mixer is connected to the inlet end of the second check valve, the outlet end of the second check valve is connected to the inlet end of the gas storage tank, the outlet end of the gas storage tank is connected to the gas cooler, and the gas cooler is connected to the air pump; The outlet end of the air pump is provided with two branches, which are respectively connected with the inlet end of the air storage tank and the inlet end of the second regulating valve. The outlet end of the second regulating valve is connected with the inlet end of the oil-gas lubrication pump.

4. The close-packed segment nip roller lubricating oil recovery and circulation system according to claim 3 is characterized in that: The clamping roller mechanism also includes a roller frame, the clamping roller body also includes a core shaft, the core shaft is limited on the roller frame, the oil inlet end and the oil outlet end of the clamping roller body are respectively opened at the two ends of the core shaft, the clamping roller mechanism also includes an oil return pipe and an oil delivery pipe, the oil outlet end of the clamping roller body is connected to the oil return pipe, and the oil return pipe is connected to the oil delivery pipe for circulating lubricating oil.

5. The close-packed segment nip roller lubricating oil recovery and circulation system according to claim 4 is characterized in that: The oil pipeline is arranged to be inclined downward by 5° along the horizontal plane.

6. A close-packed segment nip roller lubricating oil recovery and circulation system according to claim 5, characterized in that: The clamping roller body also includes a driving wheel, a roller sleeve, a top plug 1, a top plug 2, a bearing, and a support frame. The driving wheel is bolted to the roller sleeve, the inner ring end and the outer ring end of the bearing are respectively abutted against the core shaft and the roller sleeve, the space between the core shaft and the roller sleeve forms an oil delivery cavity, the top plug 1 and the top plug 2 are respectively arranged on both sides of the top and bottom of the bearing, and the support frame is clamped in the driving wheel, the outer side of which is abutted against the driving wheel, and the inner side is abutted against the core shaft.

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