A cooling device for a water jet cutting equipment booster system

Abstract

A cooling device for a water cutting equipment boosting system includes: a crankcase cooling valve block, an oil pump, an oil filter, and a plate heat exchanger; the crankcase cooling valve block has a cooling pipeline and an oil pipeline, the cooling pipeline is connected to an external coolant pipeline, and the liquid pipeline is connected to the crankcase of the water cutting equipment boosting system through the oil pump; the plate heat exchanger is arranged on the top of the crankcase cooling valve block; the oil filter is arranged on the top of the crankcase cooling valve block and is connected to the oil pipeline. By using cutting water to cool the boosting system, the boosting system can be continuously cooled during operation, and the cooling device of the present invention can cool the crankcase and the plunger pump unit at the same time; because the cutting water directly cuts the object and enters the cutting water pool, there is no need to add additional cooling equipment, saving energy.

Description

Technical Field

[0001] The invention relates to a temperature control device of a water cutting boosting system, and in particular to a cooling device of a water cutting equipment boosting system. Background Art

[0002] Waterjet cutting, also known as water jet cutting, is a high-pressure water jet cutting technology. It is a machine that uses high-pressure water jet cutting. Under the control of a computer, it can carve workpieces at will and is less affected by the texture of the material. Because of its low cost, easy operation, and high yield rate, waterjet cutting is gradually becoming the mainstream cutting method in industrial cutting technology.

[0003] China's public patent number CN 207616752U, publication date July 17, 2018, utility model name water jet cutting machine, discloses a water jet cutting machine, the technical solution of which includes a frame placed on the ground, a cutting device arranged above the frame and a water supply device arranged on the side of the cutting device, a limit device is provided in the middle of the frame, and the limit device is arranged on both sides of the frame, the limit device includes a hydraulic cylinder placed on the ground, a double connecting plate fixedly connected to the piston rod of the hydraulic cylinder and a front clamping member fixed on the double connecting plate, the double connecting plate is slidably connected to the frame, and the front clamping member includes a U-shaped plate fixedly connected to the double connecting plate, a bolt threadedly connected to the U-shaped plate and a gasket fixedly connected to the lower part of the bolt, so as to achieve the technical effect that the workpiece will not deviate when the workpiece is subjected to high-pressure water cutting.

[0004] However, its shortcoming is that this solution only solves the problem of the need to fix the product during the water cutting process, and cannot solve the problem that the booster system of the water cutting equipment overheats during use and cannot continue to work.

[0005] China's public patent number CN 105697185B, publication date November 16, 2018, invention name crankcase, discloses a crankcase, the crankcase is provided with a lubricating oil splashing channel connected between the crankcase and the rocker arm installation space of the engine cylinder assembly. The lubricating oil splashed in the crankcase of the present invention enters the rocker arm installation space through the channel, which can fully lubricate and cool the rocker arm, valve and other cylinder head moving parts without changing the circulation route of the lubricating oil, avoiding rapid wear of the rocker arm and valve and carbon deposition caused by high temperature, and extending the service life of the rocker arm assembly.

[0006] The crankcase is the power source for the waterjet cutting machine, which is mainly used to pressurize the water. Due to the way it works, it will cause it to heat up and cannot work continuously.

[0007] China's patent publication number CN 207297250 U, publication date May 1, 2018, practical name ultra-high pressure water pump, discloses an ultra-high pressure water pump, which relates to the field of water pump technology. It includes: a hydraulic cylinder, the inner cavity of the hydraulic cylinder includes a power section and a liquid return section; a piston, the piston includes a partition, a main body and a power section connected in sequence, the cross-sectional area of ​​the power section is larger than the cross-sectional area of ​​the partition, the partition cooperates with the liquid return section, the power section cooperates with the power section, the partition and the power section divide the inner cavity of the hydraulic cylinder into a liquid return chamber, a retreat chamber and a forward chamber, the power liquid inlet is connected to the retreat chamber, the power liquid outlet is connected to the forward chamber, the piston is provided with an inertia valve for connecting the forward chamber with the liquid return chamber or the retreat chamber; and a plunger pump unit driven by the piston, the plunger pump unit includes a pump body and a plunger rod; the cross-sectional area of ​​the power section minus the cross-sectional area of ​​the liquid return section is larger than the cross-sectional area of ​​the inner cavity of the pump body. Summary of the invention

[0008] The present invention is a cooling device for a boosting system designed to solve the problem that existing water jet cutting equipment cannot work continuously due to heating of the boosting system during operation.

[0009] A cooling device for a supercharging system of a water jet cutting equipment, comprising: a crankcase cooling valve block, an oil pump, an oil filter, and a plate heat exchanger;

[0010] The crankcase cooling valve block has a cooling pipeline and an oil pipeline, the cooling pipeline is connected to an external coolant pipeline, and the oil pipeline is connected to the crankcase of the water jet cutting equipment boosting system through an oil pump;

[0011] The plate heat exchanger is arranged on the top of the crankcase cooling valve block;

[0012] The oil filter is arranged on the top of the crankcase cooling valve block and is communicated with the oil pipeline.

[0013] The water cutting equipment boosting system usually uses a plunger pump to boost water pressure. In order to balance the cutting pressure, a plurality of plunger pump units are usually used to work at intervals, and the crankcase is used to drive the plunger pump unit. The crankcase will inevitably generate heat due to the movement of the crankshaft, so the crankcase needs to be cooled. The cooling device of the water cutting equipment boosting system of the present invention cools the crankcase by extracting heat from the oil in the crankcase and reintroducing it after cooling. At the same time, the external crankcase cooling valve block can also cool the crankcase body.

[0014] Preferably, an oil outlet hole and an oil inlet hole are provided on the crankcase of the supercharging system of the water jet cutting equipment;

[0015] The crankcase cooling valve block has a first end of a cooling pipeline connected to a water inlet of the cooling pipeline, a second end of the cooling pipeline connected to a water outlet of the cooling pipeline, a first end of an oil pipeline connected to an oil pump, and a second end of the oil pipeline connected to an oil inlet of an oil filter;

[0016] The oil filter is detachably connected to the crankcase cooling valve block, the oil inlet is connected to the second end of the oil pipeline of the crankcase cooling valve block, and the oil outlet is connected to the crankcase oil inlet hole;

[0017] The oil pump has a first end connected to the oil outlet hole of the crankcase, and a second end connected to the first end of the oil pipeline of the crankcase cooling valve block.

[0018] Preferably, the cooling device for the booster system of the water jet cutting equipment further comprises:

[0019] A water pump is used to pressurize cooling water, and its water inlet is connected to the water supply of the water cutting equipment;

[0020] The first water filter is used to filter cooling water, wherein the first end is connected to the water outlet of the water pump, and the second end is connected to the first end of the cooling pipeline of the crankcase cooling valve block.

[0021] Cutting water is used as the coolant. Since the cutting water directly enters the pool after use, it does not need to be cooled. Therefore, using cutting water as the coolant does not require loading additional cooling devices to cool the circulating cooling water. However, since the cutting water needs to be free of impurities, a water filter needs to be added.

[0022] Preferably, the second end of the cooling pipeline of the crankcase cooling valve block is connected to the water inlet end of the plunger pump of the water cutting equipment.

[0023] Preferably, the cooling device for the booster system of the water jet cutting equipment further comprises:

[0024] a second water filter, a first end of which is in communication with the water pump;

[0025] The plunger pump cooling device is arranged at the intersection of the plunger pump and the crankcase of the water cutting equipment, and has a cooling circuit inside. The first end of the cooling circuit is connected to the second end of the second water filter, and the second end of the cooling circuit is connected to the first end of the first water filter.

[0026] The plunger pump also generates heat when working. If the crankcase can maintain the temperature, overheating of the plunger pump will cause the system to be unable to work continuously. Therefore, the plunger pump needs to be cooled at the same time to ensure that the system can maintain a stable temperature.

[0027] Preferably, the plunger pump cooling device is in the form of a rectangular parallelepiped, with at least two plunger rod mounting holes penetrating the rectangular parallelepiped arranged on the side, and one side of the plunger pump cooling device is in contact with the crankcase of the water jet cutting device;

[0028] The cooling circuit of the plunger pump cooling device is arranged around the plunger rod mounting hole.

[0029] Preferably, the oil pump shaft is connected to the crankcase shaft, and the pump body is fixedly connected to the crankcase.

[0030] The oil pump is powered by the crankcase, which can save external power and ensure that the oil circulation is synchronized with the crankcase operation.

[0031] The substantial effect of the present invention is that by using cutting water to cool the boosting system, the boosting system can be continuously cooled during operation. The cooling device of the present invention can cool the crankcase and the plunger pump unit at the same time. Since the cutting water directly cuts the object and enters the cutting water pool, there is no need to add additional cooling equipment, thus saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Axonometric schematic diagram of the present invention;

[0033] Figure 2 A front schematic diagram of the present invention;

[0034] Figure 3 A side schematic diagram of the present invention;

[0035] Figure 4 A cross-sectional view of the crankcase cooling valve block of the present invention;

[0036] Figure 5 A schematic diagram of the crankcase cooling valve block axial side of the present invention;

[0037] In the figure: 1. crankcase, 2. crankcase cooling valve block, 3. oil filter, 4. plate heat exchanger, 5. oil pump, 6. plunger pump cooling device, 7. plunger pump, 8. water pressure gauge, 9. first water filter, 10. water pump, 11. second water filter, 12. first end of cooling pipeline, 13. first water exchange hole, 14. second water exchange hole, 15. second end port of cooling pipeline, 16. water pressure gauge hole, 17. water outlet connecting hole, 18. plug, 19. first end of oil pipeline, 20. first oil exchange hole, 21. second oil exchange hole, 22. first oil guide hole, 23. second oil guide hole, 24. second end of oil pipeline, 25. oil return hole, 26. filter mounting hole, 27. plate heat exchanger mounting hole. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0039] Example 1

[0040] like Figure 1 The cooling device of the boost system of a water cutting equipment shown in the figure includes: a crankcase cooling valve block 2, an oil pump 5, an oil filter 3, a plate heat exchanger 4, a water pump 10, a first water filter 9, a second water filter 11, and a plunger pump cooling device 6.

[0041] like Figure 2 and 3 The crankcase 1 of the water jet cutting equipment boosting system shown in the figure is provided with an oil outlet hole and an oil inlet hole. The top of the crankcase 1 has a flat mounting surface. The crankcase cooling valve block 2 is in a rectangular shape and is mounted on the mounting surface at the top of the crankcase 1. Since there is cooling water inside the crankcase cooling valve block 2, it can also be used to cool the crankcase; the front side of the crankcase 1 has a vertical mounting surface, and the plunger pump cooling device 6 is installed on the vertical mounting surface on the front side of the crankcase 1. Cooling water passes through the plunger pump cooling device 6, which can also be used to cool the crankcase 1 body.

[0042] The crankcase cooling valve block 2 is provided with a cooling pipeline first end 12 , a cooling pipeline second end, a first water exchange hole 13 , a second water exchange hole 14 , a water pressure gauge hole 16 and a water outlet connecting hole 17 .

[0043] The first end 12 of the cooling pipeline is arranged on the right side of the crankcase cooling valve block 2, is connected to a water exchange hole 13, and is connected to the second end of the first water filter 9.

[0044] The second end of the cooling pipeline has a total of three ports, and the second end ports 15 of the cooling pipeline are arranged at equal intervals. The second end ports 15 of the cooling pipeline are all arranged on the front side of the crankcase cooling valve block 2. The second end ports 15 of the cooling pipeline are all connected to the water outlet connecting hole 17, and the middle second end of the cooling pipeline is connected to the second water exchange hole 14. The second end ports 15 of the cooling pipeline are respectively connected to the water inlet ends of the three plunger pump 7 units of the water cutting equipment.

[0045] The water pressure gauge hole 16 is arranged on the left side of the second end of the cooling pipeline on the front side of the crankcase cooling valve block 2, and is connected to the water outlet connecting hole 17 and the water pressure gauge 8.

[0046] The water outlet connecting hole 17 is arranged on the left side of the crankcase cooling valve block 2. The water outlet connecting hole 17 extends from the end into the crankcase cooling valve block 2 and a plug 18 is arranged at the end. The water outlet connecting hole 17 is not connected with the first end 12 of the cooling pipeline.

[0047] The first water exchange hole 13 and the second water exchange hole 14 are both arranged on the top surface of the crankcase cooling valve block 2, and a mounting groove is arranged at the end. The first water exchange hole 13 and the second water exchange hole 14 are connected to the first group of pipes of the plate heat exchanger.

[0048] The crankcase cooling valve block 2 is provided with an oil pipeline first end 19, an oil exchange first hole 20, a first oil guide hole 22, an oil exchange second hole 21, a second oil guide hole 23, an oil pipeline second end 24 and an oil return hole 25.

[0049] The first end 19 of the oil pipeline is arranged on the rear side of the crankcase cooling valve block 2 , is connected to the oil exchange hole 20 , and is connected to the oil pump 5 .

[0050] The first oil guide hole 22 is arranged on the rear side of the crankcase cooling valve block 2. The first oil guide hole 22 extends from the end into the crankcase cooling valve block 2 and a plug 18 is arranged at the end. The first oil guide hole 22 is connected with the second oil guide hole 23 and connected with the second oil exchange hole 21.

[0051] The oil exchange hole 1 20 and the oil exchange hole 21 are both arranged on the top surface of the crankcase cooling valve block 2, and a mounting groove is arranged at the end. The oil exchange hole 1 20 and the oil exchange hole 21 are connected to the second group of pipes of the plate heat exchanger.

[0052] The second oil guide hole 23 is arranged on the left side of the crankcase cooling valve block 2 and is connected to the second end 24 of the oil pipeline. The end of the second oil guide hole 23 is connected to the oil pressure gauge.

[0053] The crankcase cooling valve block 2 is provided with plate heat exchanger mounting holes 27, four in total, all of which are arranged on the top surface of the crankcase cooling valve block 2 and are blind holes for mounting the plate heat exchanger.

[0054] The second end 24 of the oil pipeline is arranged on the top surface of the crankcase cooling valve block 2 , and has a groove at the end thereof, which is a blind hole and communicates with the second oil guide hole 23 .

[0055] The oil return hole 25 is arranged on the bottom surface of the crankcase cooling valve block 2 . The oil return hole 25 is a through hole. The oil return hole 25 is coaxially arranged with the second end 24 of the oil pipeline.

[0056] The bottom of the second end 24 of the oil pipeline is also provided with filter mounting holes 26, four in total, which are arranged at equal intervals and are through holes.

[0057] The water pump 10 is used for pressurizing cooling water, and its water inlet is connected to the water supply end of the water cutting equipment, and its water outlet is connected to the first end of the second water filter 11 .

[0058] The first water filter 9 has a first end connected to the second end of the cooling circuit of the plunger pump cooling device 6 , and a second end connected to the first end of the cooling pipeline of the crankcase cooling valve block 2 .

[0059] The second water filter 11 has a first end connected to the water pump 10 , and a second end connected to a first end of a cooling circuit of the plunger pump cooling device 6 .

[0060] The plunger pump cooling device 6 is in the shape of a rectangular parallelepiped and is arranged on one side of the intersection of the plunger pump 7 of the water cutting equipment and the crankcase 1, and is fitted with the crankcase 1 of the water cutting equipment. At least two plunger rod mounting holes that penetrate the rectangular parallelepiped are arranged on the side, and a cooling circuit is arranged inside. The cooling circuit is arranged around the plunger rod mounting hole, and the first end of the cooling circuit is connected to the second end of the second water filter 11, and the second end of the cooling circuit is connected to the first end of the first water filter 9.

[0061] The plate heat exchanger 4 is arranged on the top of the crankcase cooling valve block 2 and is detachably connected to the crankcase cooling valve block 2. The two internal circuits are respectively connected to the oil pipeline of the crankcase cooling valve block 2 and the cooling pipeline of the crankcase cooling valve block 2.

[0062] The oil filter 3 is arranged on the top of the crankcase cooling valve block 2 and is detachably connected to the crankcase cooling valve block 2; after the oil filter 3 is installed, the oil enters the oil filter 3 from the circumference of the second end 24 of the oil pipeline, and the filtered oil is output from the center of the circle. The center of the circle is connected to the oil inlet hole of the crankcase 1 through the oil return hole 25, and the circumference is connected to the second end 24 of the oil pipeline.

[0063] The oil pump 5 has a first end connected to the oil outlet of the crankcase 1 , and a second end connected to the first end of the oil pipeline of the crankcase cooling valve block 2 .

[0064] The rotating shaft of the oil pump 5 is connected to the rotating shaft of the crankcase 1, and the pump body is fixedly connected to the crankcase 1.

[0065] The water cutting equipment boosting system usually uses a plunger pump 7 to boost water pressure. In order to balance the cutting pressure, a plurality of plunger pumps 7 units are usually used to work at intervals, and the crankcase 1 is used to drive the plunger pump 7 unit. The crankcase 1 will inevitably generate heat due to the movement of the crankshaft, so the crankcase 1 needs to be cooled. The cooling device of the water cutting equipment boosting system of the present invention cools the crankcase 1 by extracting heat from the oil in the crankcase 1 and reintroducing it after cooling. At the same time, the external crankcase cooling valve block 2 can also cool the crankcase 1 body.

[0066] Cutting water is used as the coolant. Since the cutting water directly enters the pool after use, it does not need to be cooled. Therefore, using cutting water as the coolant does not require loading additional cooling devices to cool the circulating cooling water. However, since the cutting water needs to be free of impurities, a water filter needs to be added.

[0067] The plunger pump 7 also generates heat when working. If the crankcase 1 can maintain its temperature, overheating of the plunger pump 7 will cause the system to be unable to work continuously. Therefore, the plunger pump 7 needs to be cooled at the same time to ensure that the system can maintain a stable temperature.

[0068] The oil pump 5 is powered by the crankcase 1, which can save external power and ensure that the oil circulation is synchronized with the operation of the crankcase 1.

[0069] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0070] Example 2

[0071] This embodiment is basically the same as the first embodiment, except that a connecting flange is provided on the filter mounting hole 26 at the bottom of the second end 24 of the oil pipeline.

[0072] The middle pipe of the connecting flange is hollow and is detachably connected to the filter mounting hole 26 by bolts. A thread is arranged on the outside of the middle pipe. The oil filter is hinged to the connecting flange through the thread on the outside of the middle pipe and fixed to the second end 24 of the oil pipeline.

Claims

1. A cooling device for a booster system of a water jet cutting equipment, characterized in that: include: A crankcase cooling valve block, an oil pump, an oil filter, a plate heat exchanger and a plunger pump cooling device; the plate heat exchanger and the oil filter are both arranged on the top of the crankcase cooling valve block; the crankcase cooling valve block is provided with a cooling pipeline and an oil pipeline; The first end of the oil pipeline is communicated with the oil pump, and the second end of the oil pipeline is communicated with the oil inlet of the oil filter; the first end of the oil pump is communicated with the oil outlet of the crankcase, and the second end of the oil pump is communicated with the first end of the oil pipeline; the oil inlet of the oil filter is communicated with the second end of the oil pipeline, and the oil outlet of the oil filter is communicated with the oil inlet of the crankcase; The plunger pump cooling device is arranged at the intersection of the plunger pump and the crankcase of the water cutting equipment, and has a cooling circuit inside. The first end of the cooling circuit is connected to the water pump, and the second end of the cooling circuit is connected to the cooling pipeline of the crankcase cooling valve block; the first end of the cooling pipeline is connected to the cooling circuit; the second end of the cooling pipeline is connected to the water inlet end of the plunger pump of the water cutting equipment; The two internal circuits of the plate heat exchanger are respectively connected with the oil pipeline and the cooling pipeline.

2. A cooling device for a booster system of a water jet cutting equipment according to claim 1, characterized in that: The oil filter is detachably connected to the crankcase cooling valve block.

3. The cooling device for a water jet cutting equipment booster system according to claim 1, characterized in that: Also includes: The water pump is used to increase the pressure of cooling water, and the water inlet end is connected to the water supply end of the water cutting equipment; The first water filter is used to filter cooling water, wherein the first end is connected to the plunger pump cooling device, and the second end is connected to the crankcase cooling valve block.

4. A cooling device for a booster system of a water jet cutting equipment according to claim 3, characterized in that: Also includes: a second water filter, a first end of which is in communication with the water pump; The first end of the cooling circuit is in communication with the second end of the second water filter, and the second end of the cooling circuit is in communication with the first end of the first water filter.

5. A cooling device for a booster system of a water jet cutting equipment according to claim 4, characterized in that: The plunger pump cooling device is in the form of a rectangular parallelepiped, with at least two plunger rod mounting holes penetrating the rectangular parallelepiped arranged on the side, and one side of the plunger pump cooling device is in contact with the crankcase of the water jet cutting device; The cooling circuit of the plunger pump cooling device is arranged around the plunger rod mounting hole.

6. A cooling device for a booster system of a water jet cutting equipment according to claim 1 or 2, characterized in that: The rotating shaft of the oil pump is connected to the rotating shaft of the crankcase, and the pump body is fixedly connected to the crankcase.

Images