Injection molding cooler convenient to clean

Abstract

The invention relates to the field of coolers, in particular to an injection molding cooler convenient to clean. The injection molding cooler comprises a cooler body, and a shell of the cooler body communicates with an oil inlet pipe and an oil outlet pipe; one channel of the cooler body is communicated with a water inlet pipe and a water outlet pipe; the descaling mechanism comprises a descaling agent box and two switch valves, and the two switch valves are arranged on the water inlet pipe and the water outlet pipe correspondingly; the descaling agent box is filled with a descaling agent, a liquid inlet pipe and a liquid outlet pipe are communicated with the interior of the descaling agent box, the end, away from the descaling agent box, of the liquid inlet pipe is communicated with the water outlet pipe, and the end of the liquid inlet pipe is located between the switch valve and the pipe box; the end, away from the descaling agent box, of the liquid outlet pipe is communicated with the water inlet pipe and located between the switch valve and the pipe box, and a water pump is arranged on the liquid outlet pipe and used for pumping the descaling agent in the descaling agent box into the water inlet pipe. According to the scheme, the cleaning efficiency of accumulated scale in the cooler is improved.

Description

Technical Field

[0001] This invention relates to the field of coolers, and more specifically to an injection-molded cooler that is easy to clean. Background Technology

[0002] Tubular injection coolers (hereinafter referred to as coolers) are used to quickly remove the heat generated by the hydraulic system during the injection molding process in the cooling system of injection molding equipment. They are one of the key components to ensure the stable operation of the equipment, and the cooling effect of the cooler plays a decisive role in ensuring the stability of the injection molding process.

[0003] The cooler mainly consists of a cylindrical shell with an oil inlet and outlet pipe communicating with its interior. Inside the shell is a heat exchange tube bundle composed of multiple heat exchange tubes. Tube boxes are detachably connected to both ends of the shell; one tube box seals one end of the shell, while the other has an inlet and an outlet. Cooling water is introduced into the heat exchange tube bundle through the inlet, and the cooled water, after absorbing heat, is discharged through the outlet, thus achieving heat exchange and cooling. However, during long-term use, the high temperature of the cooling water in the heat exchange tube bundle causes scale to deposit and condense on the inner wall of the tube bundle. With the accumulation of scale, firstly, the scale reduces heat conduction efficiency, thus decreasing the cooling effect; secondly, the scale reduces the cross-sectional area of ​​the heat exchange tube bundle, thus reducing the flow rate of cooling water, which also reduces heat absorption efficiency, ultimately preventing the cooler from achieving rapid cooling. Therefore, when the cooling effect of the cooler is reduced due to the accumulation of scale, the tube box needs to be removed to expose the heat exchange tube bundle. Then, a metal brush head is used to polish and clean the scale inside the heat exchange tube bundle. However, since the heat exchange tube bundle is mostly made of copper tubes, it is easy to damage the heat exchange tube bundle during the polishing and cleaning process. At the same time, when using a metal brush head for cleaning, the heat exchange tube bundle needs to be cleaned one by one. Since there are many heat exchange tubes, the whole cleaning process is slow, resulting in a long downtime of the injection molding equipment during the cleaning process, which is not conducive to ensuring the production efficiency of the factory. Summary of the Invention

[0004] The present invention aims to provide an injection molding cooler that is easy to clean, thereby improving the efficiency of cleaning accumulated scale in the cooler.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection molding cooler that is easy to clean, comprising: The cooler body has an oil inlet pipe and an oil outlet pipe connected to its shell; one of the pipe boxes of the cooler body has a water inlet pipe and a water outlet pipe connected to it. The descaling mechanism includes a descaling agent tank and two switching valves, which are respectively installed on the inlet pipe and the outlet pipe. The descaling agent tank is filled with descaling agent, and an inlet pipe and an outlet pipe are connected to the tank. The end of the inlet pipe away from the descaling agent tank is connected to the outlet pipe, and this end of the inlet pipe is located between the switching valve and the tank. The end of the outlet pipe away from the descaling agent tank is connected to the inlet pipe, and this end of the outlet pipe is located between the switching valve and the tank. A water pump is installed on the outlet pipe to pump the descaling agent from the tank into the inlet pipe.

[0006] Preferably, as an improvement, the inlet pipe and the outlet pipe are detachably connected, and the outlet pipe and the inlet pipe are detachably connected.

[0007] Preferably, as an improvement, the inlet pipe is equipped with a shut-off valve located at the connection between the inlet pipe and the outlet pipe; the outlet pipe is also equipped with a shut-off valve located at the connection between the outlet pipe and the inlet pipe.

[0008] Preferably, as an improvement, the descaling agent tank is provided with a transparent observation port, and the observation port is provided with a scale.

[0009] Preferably, as an improvement, a filter cartridge is detachably connected to the descaling agent tank, and the inlet pipe is connected to the inside of the filter cartridge, which is used to filter the descaling agent discharged from the inlet pipe.

[0010] The principle and advantages of this solution are as follows: When descaling the cooler is required, first close the valves on the inlet and outlet pipes to cut off the external cooling water supply. Then open the shut-off valves on the inlet and outlet pipes and start the water pump on the outlet pipe. The water pump draws out the descaling agent from the descaling agent tank and pumps it into the inlet pipe through the outlet pipe. The descaling agent flows into the heat exchange tube bundle through the inlet pipe. Then, stop the water pump and let it stand for a period of time to allow the descaling agent to chemically react with the scale on the inner wall of the tube bundle to dissolve the scale. Afterward, start the water pump again, and the descaling agent flowing through the heat exchange tube bundle enters the heat exchange tube bundle through the outlet pipe. The liquid inlet pipe eventually returns to the filter cartridge in the descaling agent tank. The filter cartridge filters out the scale residue carried in the descaling agent. The filtered descaling agent is then pumped into the cooler to continuously flush the heat exchange tube bundle. At the same time, the liquid level and descaling agent status in the descaling agent tank can be viewed in real time through the scale on the observation port. After the scale removal is completed, the water pump and shut-off valve are turned off, and the switch valve is turned back on to restore the cooling water supply. This completes efficient descaling and quickly restores the cooler to work. If it is necessary to replace or replenish the descaling agent, the descaling mechanism can be removed through the detachable connection of the liquid inlet and liquid outlet pipes.

[0011] 1. Compared with existing descaling methods, this solution does not require disassembling the tube box and separating the heat exchange tube bundle. The circulating descaling can be started by switching the valve, eliminating the tedious steps of traditional disassembly and grinding each tube individually. The descaling agent circulates through all heat exchange tubes, achieving simultaneous descaling of multiple tubes. This avoids the inefficiency of cleaning single tubes one by one, significantly reducing the downtime of injection molding equipment and ensuring production efficiency.

[0012] 2. It avoids physical contact between the metal brush head and the heat exchange tube bundle, thus avoiding the possibility of damage to the heat exchange tube bundle during cleaning and polishing.

[0013] 3. By combining the control of the on / off valve and the shut-off valve, the normal cooling and descaling modes can be quickly switched without the need for professional and complicated operation. Moreover, the descaling mechanism and the cooler body can be detachably connected, which facilitates the replenishment and replacement of descaling agent and the maintenance of the descaling mechanism. In addition, the circulating descaling design reduces the waste of descaling agent and lowers the cost of consumables.

[0014] 4. The transparent observation port of the descaling agent tank, equipped with a scale, allows for real-time monitoring of the descaling agent level and turbidity, providing a clear indication of the descaling progress and whether the descaling agent has become ineffective, thus avoiding blind descaling or excessive consumption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an injection molding cooler that is easy to clean according to the present invention.

[0016] Figure 2 This is a schematic diagram of the descaling mechanism from the right side in an embodiment of the present invention.

[0017] The reference numerals in the accompanying drawings include: oil inlet pipe 1, oil outlet pipe 2, cooler body 3, pipe box 4, heat exchange tube bundle 5, water inlet pipe 6, shut-off valve 7, water pump 8, switch valve 9, water outlet pipe 10, liquid inlet pipe 11, descaling agent tank 12, observation port 13, liquid outlet pipe 14, and filter cartridge 15. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figure 1 and attached Figure 2 As shown: An easy-to-clean injection molding cooler includes: The cooler body 3 has an oil inlet pipe 1 and an oil outlet pipe 2 connected to its shell; one of the pipe boxes 4 of the cooler body 3 has a water inlet pipe 6 and a water outlet pipe 10 connected to it. The descaling mechanism includes a descaling agent tank 12 and two switching valves 9, which are respectively installed on the inlet pipe 6 and the outlet pipe 10. The descaling agent tank 12 has a transparent observation port 13 with a scale. The descaling agent tank 12 is filled with descaling agent. An inlet pipe 11 and an outlet pipe 14 are connected to the upper part of the tank. The end of the inlet pipe 11 away from the tank is connected to the outlet pipe 10, and a shut-off valve 7 is installed at the connection point. This end of the inlet pipe 11 is located between the switching valve 9 and the pipe box 4. The end of the outlet pipe 14 away from the tank is connected to the inlet pipe 6, and a shut-off valve 7 is also installed at the connection point. This end of the outlet pipe 14 is located between the switching valve 9 and the pipe box 4. A water pump 8 is installed on the outlet pipe 14, which pumps the descaling agent from the tank 12 into the inlet pipe 6. A filter cartridge 15 is detachably connected to the descaling agent tank 12. The inlet pipe 11 is connected to the inside of the filter cartridge 15. The filter cartridge 15 is used to filter the descaling agent discharged from the inlet pipe 11.

[0019] The specific implementation process is as follows: When descaling the cooler is required, first close the switch valves 9 on the inlet pipe 6 and outlet pipe 10 to cut off the external cooling water supply. Then open the shut-off valves 7 on the liquid inlet pipe 11 and outlet pipe 14, and start the water pump 8 on the outlet pipe 14. The water pump 8 draws out the descaling agent from the descaling agent tank 12 and pumps it into the inlet pipe 6 through the outlet pipe 14. The descaling agent flows into the heat exchange tube bundle 5 along the inlet pipe 6. Then stop the operation of the water pump 8 and let it stand for a period of time to allow the descaling agent to react chemically with the scale on the inner wall of the tube bundle to dissolve the scale. Then start the water pump 8 again, and the descaling agent flowing through the heat exchange tube bundle 5 will enter the inlet pipe through the outlet pipe 10. 11. Finally, the descaling agent flows back to the filter cartridge 15 in the descaling agent tank 12. The filter cartridge 15 filters the scale residue carried in the descaling agent. The filtered descaling agent is then pumped into the cooler to continuously flush the heat exchange tube bundle 5. At the same time, the liquid level and descaling agent status in the descaling agent tank 12 can be viewed in real time through the scale on the observation port 13. After the scale is cleaned, the water pump 8 and the shut-off valve 7 are turned off, and the switch valve 9 is turned on again to restore the cooling water supply. This completes the efficient descaling and quickly restores the cooler to work. If the descaling agent needs to be replaced or replenished, the descaling mechanism can be removed through the detachable connection of the inlet pipe 11 and the outlet pipe 14.

[0020] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An easy-to-clean injection molding cooler, characterized in that, include: The cooler body has an oil inlet pipe and an oil outlet pipe connected to its shell; one of the pipe boxes of the cooler body has a water inlet pipe and a water outlet pipe connected to it. The descaling mechanism includes a descaling agent tank and two switching valves, which are respectively installed on the inlet pipe and the outlet pipe. The descaling agent tank is filled with descaling agent, and an inlet pipe and an outlet pipe are connected to the tank. The end of the inlet pipe away from the descaling agent tank is connected to the outlet pipe, and this end of the inlet pipe is located between the switching valve and the tank. The end of the outlet pipe away from the descaling agent tank is connected to the inlet pipe, and this end of the outlet pipe is located between the switching valve and the tank. A water pump is installed on the outlet pipe to pump the descaling agent from the tank into the inlet pipe.

2. The injection molding cooler that is easy to clean according to claim 1, characterized in that: The inlet pipe and the outlet pipe are detachably connected, and the outlet pipe and the inlet pipe are detachably connected.

3. The injection molding cooler that is easy to clean according to claim 2, characterized in that: The inlet pipe is equipped with a shut-off valve, which is located at the connection between the inlet pipe and the outlet pipe; the outlet pipe is also equipped with a shut-off valve, which is located at the connection between the outlet pipe and the inlet pipe.

4. The easy-to-clean injection molding cooler according to claim 3, characterized in that: The descaling agent tank is equipped with a transparent observation port, and the observation port is equipped with a scale.

5. The easy-to-clean injection molding cooler according to claim 4, characterized in that: A filter cartridge is detachably connected to the descaling agent tank. The inlet pipe is connected to the inside of the filter cartridge, and the filter cartridge is used to filter the descaling agent discharged from the inlet pipe.

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