Cooling water system

Abstract

The utility model discloses a cooling water system which comprises a water source water inlet pipe communicated with a part water supply pipe and a water source water return pipe communicated with a part water return pipe, and an electromagnetic valve I is arranged between the water source water inlet pipe and the part water supply pipe. The water hammer effect can be reduced, the front-end pressure of the electromagnetic valve is reduced, and the reliability of the electromagnetic valve is improved; and the electromagnetic valve is installed on the water inlet side of the part, the part cannot be impacted when the electromagnetic valve is suddenly closed, and the reliability of the part is improved.

Description

Technical Field

[0001] The utility model relates to injection molding equipment, in particular to a cooling water system. Background Art

[0002] Since most of the parts processed by injection molding machines are large-volume products, injection molding machines often need to work continuously for a long time, which leads to higher requirements for the efficiency and reliability of the cooling system of injection molding machines. If the cooling system fails, it will cause the injection molding machine to stop, resulting in greater losses.

[0003] Conventional cooling water systems such as Figure 1 As shown, it is mainly composed of five parts. The part return pipe 5 is connected to the water source return pipe 4 through the solenoid valve 2, and the water source supply pipe 3 is connected to the part supply pipe 1. The water source enters from the water source supply pipe 3, enters the part supply pipe 1 through the pipeline, cools the parts, and then returns from the part return pipe 5, passes through the solenoid valve 2, and returns from the water source return pipe 4. The function of the solenoid valve 2 is to close the water circuit to save energy if the temperature of the part is low and does not need to be cooled.

[0004] During the actual use of the above solution, when the solenoid valve is closed instantly, water hammer will occur due to the long return water pipeline, causing the pressure at the front end of the solenoid valve to rise very high instantly, which can easily damage the solenoid valve and the sealing rings of the parts to be cooled (such as the motor, barrel oil seal, etc.), easily causing the injection molding machine to shut down, resulting in greater losses. Summary of the invention

[0005] The technical problem to be solved by the utility model is: when the electromagnetic valve is closed instantly, how to reduce the pressure on the front end of the electromagnetic valve caused by the return water pipeline to avoid damaging the electromagnetic valve and other components.

[0006] In order to solve the above technical problems, the utility model provides a cooling water system, which includes a water source inlet pipe connected to the part water supply pipe and a water source return pipe connected to the part return pipe, and a solenoid valve is provided between the water source inlet pipe and the part water supply pipe.

[0007] Preferably, the water source inlet pipe is also connected to the cooling medium inlet of the filter oil cooler, and the cooling medium outlet of the filter oil cooler is connected to the water source return pipe.

[0008] More preferably, a second solenoid valve is provided between the cooling medium outlet of the filter oil cooler and the water source return pipe.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. Reduce water hammer effect, reduce the pressure at the front end of the solenoid valve, and improve the reliability of the solenoid valve;

[0011] 2. Install the solenoid valve on the water inlet side of the parts. When the solenoid valve is suddenly closed, the parts will not be impacted, thus improving the reliability of the parts.

[0012] 3. Integrated filtered oil cooling, saving costs and convenient for customers to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a conventional cooling water system;

[0014] Figure 2 This is a schematic diagram of the cooling water system provided by the utility model. DETAILED DESCRIPTION

[0015] In order to make the present invention more obvious and easy to understand, preferred embodiments are described in detail as follows in conjunction with the accompanying drawings.

[0016] Example

[0017] like Figure 2 As shown, a cooling water system provided by the utility model comprises a water source inlet pipe 3 connected to the parts water supply pipe 1 and a water source return pipe 4 connected to the parts return pipe 5, and a solenoid valve 2 is arranged between the water source inlet pipe 3 and each parts water supply pipe 1. The water source inlet pipe 3 is also connected to the cooling medium inlet of the filter oil cooler 8, and the cooling medium outlet of the filter oil cooler 8 is connected to the water source return pipe 4, and a solenoid valve 6 is arranged between the cooling medium outlet of the filter oil cooler 8 and the water source return pipe 4. The filter oil cooler 8 is connected between the filter unit 7 (providing filtration for the hydraulic oil) and the motor pump assembly 9 (providing power for the hydraulic oil).

[0018] Water enters from the water source inlet pipe 3 and is divided into two parts: one part passes through the solenoid valve 2, enters the part water supply pipe 1 through the pipeline to cool the parts, and then returns to the water source return pipe 4 from the part return pipe 5 through the pipeline; the other part enters the filtered oil cooler 8 through the pipeline to cool the filtered oil, and then passes through the solenoid valve 6 and also returns to the water source return pipe 4.

[0019] The above-mentioned cooling water system changes the solenoid valve 2 from being originally installed between the part return pipe 5 and the water source return pipe 4 to being installed between the part water supply pipe 1 and the water source inlet pipe 3. This can shorten the pipeline before the solenoid valve 2 and reduce the water hammer phenomenon. The solenoid valve 2 is placed on the water inlet side of the part. In this way, when the solenoid valve is suddenly closed, it will not cause impact on the part and will not damage the seal of the part.

[0020] The above cooling water system also adds filtered oil cooling to this cooling water system to achieve high integration. In this way, only one water channel is needed to achieve parts cooling and filtered oil cooling, which can save customers' costs and is more convenient to use.

Claims

1. A cooling water system, comprising a water source water inlet pipe (3) connected to a component water supply pipe (1) and a water source water return pipe (4) connected to a component water return pipe (5), characterized in that: A solenoid valve (2) is provided between the water source inlet pipe (3) and the parts water supply pipe (1).

2. The cooling water system according to claim 1, characterized in that: The water source inlet pipe (3) is also connected to the cooling medium inlet of the filter oil cooler (8), and the cooling medium outlet of the filter oil cooler (8) is connected to the water source return pipe (4).

3. The cooling water system according to claim 2, characterized in that: A second solenoid valve (6) is provided between the cooling medium outlet of the filter oil cooler (8) and the water source return pipe (4).

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