Cooling water system for die casting machine and air compressor

Abstract

The utility model discloses a cooling water system for a die-casting machine and an air compressor, which comprises a cooling device, a cooling water tank and a cooling pump room, the cooling device is connected with the cooling water tank, the cooling pump room is connected with the cooling water tank, the cooling pump room comprises a plurality of cooling water pumps, one cooling water pump is connected with an air compressor set through a first water outlet pipe, and the other cooling water pump is connected with a second water outlet pipe. The cooling water pumps are connected with the die-casting unit through second water outlet pipes. A first communicating valve is arranged at the end, close to the cooling water pump, of the first water outlet pipe, the cooling device comprises a plurality of coolers, one cooler is connected with the air compressor unit through a first water return pipe, and the other coolers are connected with the die-casting machine through second water return pipes; a second communication valve is arranged at one end of the first water return pipe close to the cooler. According to the cooling water system, the die-casting machine and the air compressor which are independently installed share one cooling water system, cooling water can enter the die-casting machine and / or the air compressor in a mutual allocation mode, and therefore 24-hour uninterrupted operation of the air compressor is guaranteed, and the cooling water system is efficient and energy-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a cooling water system for a die-casting machine and an air compressor. Background Art

[0002] During the production process, the air compressor needs to operate 24 hours a day to provide compressed air for the production workshop. Like the die-casting machine, the air compressor needs to be connected to cooling water for cooling.

[0003] However, in the prior art, the die-casting machine and the air compressor are cooled by two independent cooling water systems. When one of the cooling water systems fails, the other cooling water system cannot supply cooling water to the die-casting machine or the air compressor as required, thereby affecting the normal operation of production. The system lacks practicality and cannot meet the existing production and use requirements.

[0004] In addition, in order to continuously and effectively output cooling water and accurately control the water temperature of the cooling water, the cooling tower and water pump are turned on at high speed for a long time, resulting in high energy consumption and poor energy-saving effect.

[0005] Therefore, it is necessary to develop a cooling water system for the die-casting machine and the air compressor, so that the independently installed die-casting machine and the air compressor can share a cooling water system, and the cooling water can be mutually allocated to the die-casting machine and / or the air compressor, thereby ensuring that the air compressor runs uninterruptedly for 24 hours with high efficiency and energy saving. Utility Model Content

[0006] In order to solve the above problems, the technical solutions adopted by the utility model are as follows:

[0007] A cooling water system for a die-casting machine and an air compressor, applied to a die-casting unit and an air compressor unit, characterized in that it comprises a cooling device, a cooling water pool and a cooling pump room, wherein the water inlet end of the cooling device is connected to the cooling water pool, the water inlet end of the cooling pump room is connected to the cooling water pool, the cooling pump room comprises two or more cooling water pumps connected in parallel, wherein one of the cooling water pumps is connected to the air compressor unit through a first water outlet pipe, and the other two or more cooling water pumps are respectively connected to the die-casting unit through a second water outlet pipe;

[0008] A first connecting valve is provided at one end of the first water outlet pipe close to the cooling water pump, and the other end of the first connecting valve is connected to one of the second water outlet pipes;

[0009] The cooling device comprises two or more coolers connected in parallel, wherein one of the coolers is connected to the air compressor unit through a first water return pipe, and the other two or more coolers are respectively connected to the die-casting machine through a second water return pipe;

[0010] A second connecting valve is provided at one end of the first water return pipe close to the cooler, and the other end of the second connecting valve is connected to one of the second water return pipes;

[0011] The system also includes a controller which is electrically connected to the cooling water pump, the cooler, the first connecting valve and the second connecting valve.

[0012] Preferably, the controller comprises a first pressure sensor and a second pressure sensor, and the first pressure sensor and the second pressure sensor are respectively arranged at one end of the first water outlet pipe and the second water outlet pipe close to the cooling water pump;

[0013] The first pressure sensor and the second pressure sensor are electrically connected to the cooling water pump.

[0014] Preferably, the controller further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor;

[0015] The first temperature sensor is arranged on a pipe connecting the cooler and the cooling water pool, and the second temperature sensor and the third temperature sensor are arranged on one end of the first water return pipe and the second water return pipe close to the cooler respectively;

[0016] The first temperature sensor, the second temperature sensor and the third temperature sensor are electrically connected to the cooler.

[0017] Preferably, a siphon tank is provided at the connection between the cooling water pump and the cooling water tank.

[0018] Preferably, the water pressure entering the die-casting unit through the first water outlet pipe is 0.4-0.5 MPa, and the water pressure entering the air compressor unit through the second water outlet pipe is 0.4-0.5 MPa.

[0019] Preferably, the temperature of cooling water entering the die-casting unit through the first water outlet pipe is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons; the temperature of cooling water entering the air compressor unit through the second water outlet pipe is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons.

[0020] Preferably, the cooler is an open cooling tower.

[0021] Preferably, the die-casting machine group includes two or more die-casting machines, and the air compressor group includes two or more air compressors;

[0022] The die-casting machine is provided with a mold temperature controller, and the first water outlet pipe is connected to the die-casting machine through the mold temperature controller.

[0023] Preferably, filters are respectively provided at one end of the first water outlet pipe and the second water outlet pipe close to the cooling water pump.

[0024] Preferably, the filter is a fully automatic self-cleaning filter.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The independently installed die-casting machine and die-casting machine share a cooling water system. Under normal circumstances, the cooling water can be independently controlled to supply the die-casting machine and the air compressor respectively; in case of failure, the cooling water can be allocated to each other so that the cooling water of the die-casting machine can be supplied to the air compressor at the same time, ensuring that the air compressor can run uninterruptedly for 24 hours.

[0027] 2. The speed of the cooling tower fan and cooling water pump can be automatically controlled according to the outlet water temperature and outlet water pressure to reduce energy consumption, thereby achieving energy saving effect through frequency conversion control. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle;

[0030] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0031] Among them: die-casting unit 1, air compressor unit 2, cooling device 3, cooling water pool 4, cooling pump room 5, siphon tank 6, mold temperature controller 7, filter 8, first water outlet pipe 10, second water outlet pipe 20, first connecting valve 30, second water return pipe 40, second connecting valve 50, first pressure sensor 60, second pressure sensor 70, first temperature sensor 80, second temperature sensor 90, third temperature sensor 100, first water return pipe 110, die-casting machine 11, air compressor 21, cooler 31, cooling water pump 51. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0036] like Figure 1-3 As shown, a cooling water system for a die-casting machine and an air compressor is applied to a die-casting unit 1 and an air compressor unit 2, comprising a cooling device 3, a cooling water pool 4 and a cooling pump room 5, wherein the water inlet end of the cooling device 3 is connected to the cooling water pool 4, the water inlet end of the cooling pump room 5 is connected to the cooling water pool 4, the cooling pump room 5 comprises two or more cooling water pumps 51 connected in parallel, wherein one of the cooling water pumps 51 is connected to the air compressor unit 2 via a first water outlet pipe 10, and the other two or more cooling water pumps 51 are respectively connected to the die-casting unit 1 via a second water outlet pipe 20;

[0037] A first connecting valve 30 is disposed at one end of the first water outlet pipe 10 close to the cooling water pump 51, and the other end of the first connecting valve 30 is connected to one of the second water outlet pipes 20;

[0038] The cooling device 3 includes two or more coolers 31 connected in parallel, wherein one of the coolers 31 is connected to the air compressor unit 2 via a first water return pipe 110, and the other two or more coolers 31 are connected to the die-casting machine 11 via a second water return pipe 40;

[0039] A second connecting valve 50 is disposed at one end of the first water return pipe 110 close to the cooler 31, and the other end of the second connecting valve 50 is connected to one of the second water return pipes 40;

[0040] The system further includes a controller (not shown in the figure), which is electrically connected to the cooling water pump 51 , the cooler 31 , the first connecting valve 30 and the second connecting valve 50 .

[0041] In this embodiment, the outlet of the cooling water pump 51 of the air compressor unit 2 can be connected with the outlet of the cooling water pump 51 of the die-casting unit 1 through the first connecting valve 30, and the water inlet of the cooler 31 of the air compressor unit 2 can be connected with the water inlet of the cooler 31 of the die-casting unit 1 through the second connecting valve 50; when the cooling water pump 51 of the die-casting unit 1 fails and stops being used, under the action of the controller, the first connecting valve 30 and the second connecting valve 50 are opened, so that the cooling water to the die-casting unit 1 can be supplied to the air compressor unit 2 at the same time, so that the air compressor unit 2 can run uninterruptedly for 24 hours.

[0042] In addition, in this embodiment, when the number of air compressor units 2 and die-casting units 1 turned on is small, the first connecting valve 30 and the second connecting valve 50 are controlled to be opened, and only one cooling water pump 51 and one cooler 31 are turned on to simultaneously meet the cooling water demand of the air compressor unit 2 and the die-casting unit 1, thereby achieving high efficiency and energy saving.

[0043] The above structure, when normal, independently controls the cooling water to be supplied to the die casting machine 11 and the air compressor 21; when a fault occurs, the cooling water to the die casting machine 11 is simultaneously supplied to the air compressor 21, ensuring that the air compressor 21 operates uninterruptedly 24 hours a day, ensuring normal production operation, and achieving high efficiency and energy saving.

[0044] Further, such as Figure 1-3 The controller shown includes a first pressure sensor 60 and a second pressure sensor 70, and the first pressure sensor 60 and the second pressure sensor 70 are respectively arranged at one end of the first water outlet pipe 10 and the second water outlet pipe 20 close to the cooling water pump 51;

[0045] The first pressure sensor 60 and the second pressure sensor 70 are electrically connected to the cooling water pump 51 .

[0046] In this embodiment, when the number of air compressors 21 used is small, the first pressure sensor 60 at the outlet of the cooling water pump 51 controls the corresponding cooling water pump 51 to operate at a reduced frequency. When the number of die-casting machines 11 used is small, the second pressure sensor 70 at the outlet of the cooling water pump 51 controls the corresponding cooling water pump 51 to operate at a reduced frequency, thereby achieving energy saving through frequency conversion control.

[0047] Further, such as Figure 1-3 The controller shown also includes a first temperature sensor 80, a second temperature sensor 90 and a third temperature sensor 100;

[0048] The first temperature sensor 80 is disposed on a pipe connecting the cooler 31 and the cooling water pool 4, and the second temperature sensor 90 and the third temperature sensor 100 are respectively disposed on one end of the first return pipe 110 and the second return pipe 40 close to the cooler 31;

[0049] The first temperature sensor 80 , the second temperature sensor 90 and the third temperature sensor 100 are electrically connected to the cooler 31 .

[0050] In this embodiment, when the second temperature sensor 90 and the third temperature sensor 100 respectively detect that the cooling water temperature of the first return pipe 110 and the second return pipe 40 is low, the first temperature sensor 80 at the water inlet section of the cooler 31 controls the fan of the cooler 31 to slow down or stop, thereby achieving energy saving effect through frequency conversion control.

[0051] Further, such as Figure 1-3 As shown, a siphon tank 6 is provided at the connection between the cooling water pump 51 and the cooling water pool 4 .

[0052] In this embodiment, during operation, the siphon tank 6 discharges the air in the cooling water flowing to the cooling water pump 51, reducing cavitation of the cooling water pump 51, eliminating the need for manual water replenishment each time the cooling water pump 51 is turned on, stabilizing the pressure of the cooling water pipeline, and protecting the cooling water pump 51.

[0053] Further, such as Figure 1-3 As shown, the water pressure entering the die-casting unit 1 through the first water outlet pipe 10 is 0.4-0.5 MPa, and the water pressure entering the air compressor unit 2 through the second water outlet pipe 20 is 0.4-0.5 MPa.

[0054] Further, such as Figure 1-3 As shown, the temperature of cooling water entering the die-casting unit 1 through the first water outlet pipe 10 is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons; the temperature of cooling water entering the air compressor unit 2 through the second water outlet pipe 20 is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons.

[0055] In this embodiment, the cooling water pump 51 of the die-casting machine 11 draws water from the underground cooling water pool 4 through the siphon tank 6, and sends it to the mold (machine-side mold cooling equipment), oil cooling, workpiece cooling system and other heat exchange of the die-casting machine 11, and then returns to the cooler 31. The water cooled by the cooler 31 flows by gravity to the underground cooling water pool 4; the pressure of the cooling water delivered to the die-casting unit 1 is 0.4~0.5Mpa; the temperature of the cooling water can be set as: the temperature in summer ≤32℃, 25℃≤other seasons (temperature can be set) ≤32℃.

[0056] In this embodiment, the die-casting cooling water pump 51 draws water from the underground cooling water pool 4 through the siphon tank 6, and sends it to the air compressor 21, the cold dryer cooling system, etc. for heat exchange, and then returns to the cooler 31. The water cooled by the cooler 31 flows by gravity to the underground cooling water pool 4. The pressure of the cooling water delivered to the air compressor unit 2 is 0.4ˉ0.5Mpa, and the temperature of the cooling water can be set as: temperature ≤32℃ in summer, 25℃≤other seasons (temperature can be set)≤32℃.

[0057] Further, such as Figure 1 As shown, the cooler 31 is an open cooling tower.

[0058] Further, such as Figure 1 As shown, the die-casting machine group 1 includes two or more die-casting machines 11, and the air compressor group 2 includes two or more air compressors 21;

[0059] The die-casting machine 11 is provided with a mold temperature controller 7 , and the first water outlet pipe 10 is connected to the die-casting machine 11 through the mold temperature controller 7 .

[0060] In this embodiment, the above structure can accurately and stably control the cooling water entering the mold.

[0061] Further, such as Figure 3 As shown, filters 8 are respectively provided at one end of the first water outlet pipe 10 and the second water outlet pipe 20 close to the cooling water pump 51 .

[0062] Furthermore, the filter 8 is a fully automatic self-cleaning filter 8.

[0063] In this embodiment, the fully automatic self-cleaning filter 8 can automatically monitor the water quality and filter the cooling water, and can be self-cleaning without manual decontamination.

[0064] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of the utility model patent.

Claims

1. A cooling water system for a die casting machine and an air compressor, applied to a die casting unit and an air compressor unit, characterized in that: It includes a cooling device, a cooling water pool and a cooling pump room, wherein the water inlet end of the cooling device is connected to the cooling water pool, the water inlet end of the cooling pump room is connected to the cooling water pool, and the cooling pump room includes two or more cooling water pumps connected in parallel, wherein one cooling water pump is connected to the air compressor unit through a first water outlet pipe, and the other two or more cooling water pumps are respectively connected to the die-casting unit through a second water outlet pipe; A first connecting valve is provided at one end of the first water outlet pipe close to the cooling water pump, and the other end of the first connecting valve is connected to one of the second water outlet pipes; The cooling device comprises two or more coolers connected in parallel, wherein one of the coolers is connected to the air compressor unit through a first water return pipe, and the other two or more coolers are respectively connected to the die-casting machine through a second water return pipe; A second connecting valve is provided at one end of the first water return pipe close to the cooler, and the other end of the second connecting valve is connected to one of the second water return pipes; The system also includes a controller which is electrically connected to the cooling water pump, the cooler, the first connecting valve and the second connecting valve.

2. A cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The controller comprises a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are respectively arranged at one end of the first water outlet pipe and the second water outlet pipe close to the cooling water pump; The first pressure sensor and the second pressure sensor are electrically connected to the cooling water pump.

3. A cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The controller further comprises a first temperature sensor, a second temperature sensor and a third temperature sensor; The first temperature sensor is arranged on a pipe connecting the cooler and the cooling water pool, and the second temperature sensor and the third temperature sensor are arranged on one end of the first water return pipe and the second water return pipe close to the cooler respectively; The first temperature sensor, the second temperature sensor and the third temperature sensor are electrically connected to the cooler.

4. A cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: A siphon tank is provided at the connection between the cooling water pump and the cooling water pool.

5. The cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The water pressure entering the die-casting unit through the first water outlet pipe is 0.4-0.5Mpa, and the water pressure entering the air compressor unit through the second water outlet pipe is 0.4-0.5Mpa.

6. A cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The temperature of cooling water entering the die-casting unit from the first water outlet pipe is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons; the temperature of cooling water entering the air compressor unit from the second water outlet pipe is: temperature ≤32°C in summer, 25°C≤≤32°C in other seasons.

7. The cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The cooler is an open cooling tower.

8. The cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The die-casting machine group includes two or more die-casting machines, and the air compressor group includes two or more air compressors; The die-casting machine is provided with a mold temperature controller, and the first water outlet pipe is connected to the die-casting machine through the mold temperature controller.

9. The cooling water system for a die casting machine and an air compressor according to claim 1, characterized in that: The first water outlet pipe and the second water outlet pipe are respectively provided with filters at one end close to the cooling water pump.

10. A cooling water system for a die casting machine and an air compressor according to claim 9, characterized in that: The filter is a fully automatic self-cleaning filter.

Images