Cooling water pressure relief water return tank of low-pressure machine

Abstract

The utility model aims to solve the problem that a pressure relief structure for high-pressure airflow is lacked in a mold cooling water backflow box in an existing low-pressure casting machine. The utility model provides a low-pressure machine cooling water pressure relief return water tank which comprises a return water tank body. A water inlet, a water outlet and an air outlet are formed in the backflow box body; wherein the water inlet is formed in the side face of the backflow box body, the water outlet is formed in the bottom of the backflow box body, and the air outlet is formed in the top of the backflow box body; an airflow baffle is arranged in the backflow box body, and a plurality of vent holes are formed in the airflow baffle; the airflow baffle is positioned between the water inlet in the side surface and the air outlet in the top of the backflow box; the airflow baffle blocks airflow flowing to the air outlet, the pressure intensity of the airflow at the air outlet is reduced, and pressure relief is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting machines, in particular to a cooling water pressure relief return tank for a low-pressure machine. Background Art

[0002] Low-pressure casting machines are versatile equipment for low-pressure casting of aluminum alloys. They are widely used in the production of aluminum alloy castings for the automotive, motorcycle, instrumentation, textile machinery, and aerospace industries. They consist of a main machine, hydraulic system, molten pool holding furnace, liquid level pressurization device, electrical control system, and mold cooling system. The mold cooling system typically uses cooling water, which circulates through a return tank, as shown in patents CN118060522A and CN114260438A. The cooling water that flows back after the casting is cooled usually has a high temperature of 200℃~300℃, which will produce a large amount of water vapor. Therefore, an air outlet will be set in the return water tank or other parts of the return channel to maintain the air pressure in the return channel stable. On the other hand, in some casting processes, after the liquid is cooled, it is necessary to use high-pressure gas to blow the remaining liquid in the mold cavity along the liquid pipeline away from the mold cavity to avoid affecting the casting of subsequent products. This part of the gas will also flow into the return water tank with the liquid, mix with the high-temperature water vapor, further increase the air pressure, and finally flow out from the air outlet of the return water tank. A large amount of high-pressure and high-temperature water vapor will impact the components connected to the air outlet, causing the air outlet connection to loosen, or produce other adverse effects. Therefore, there is a need for a return water structure that can help relieve the pressure of the high-pressure airflow in the cooling water. Summary of the Invention

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and provide a low-pressure machine cooling water pressure relief return tank.

[0004] In order to solve the above problems, the present invention adopts the following solutions:

[0005] A low-pressure machine cooling water pressure relief return water tank includes a return box body; the return box body is provided with a water inlet, a water outlet and an air outlet; the water inlet is provided on the side of the return box body, the water outlet is provided at the bottom of the return box body, and the air outlet is provided at the top of the return box body; an air flow baffle is provided in the return box body, and a plurality of air vents are provided on the air flow baffle; the air flow baffle is located between the water inlet on the side of the return box body and the air outlet on the top.

[0006] Furthermore, two or more air flow baffles are provided in the reflux box; different air flow baffles are arranged parallel to each other.

[0007] Furthermore, the vents on the two adjacent air flow baffles are staggered, with the vents on one air flow baffle corresponding to the area without vents on the other air flow baffle.

[0008] Furthermore, three air flow baffles are provided in the reflux box.

[0009] Furthermore, the reflux box is in the shape of a hollow cylinder as a whole.

[0010] Furthermore, the top and bottom of the reflux box are provided with arc-shaped end covers, the end cover close to the bottom end is provided with a water outlet, and the end cover close to the top end is provided with an air outlet.

[0011] Furthermore, the shape of the airflow baffle is a circular plate corresponding to the return box, and the edge of the airflow baffle is in contact with the inner wall of the return box.

[0012] Furthermore, the vents on the airflow baffle are distributed in a straight line along the radius of the airflow baffle; the vents on adjacent radii are spaced at a set angle; and the adjacent vents on the same radius are spaced at a set distance.

[0013] Furthermore, a switch valve is provided on the air outlet.

[0014] Furthermore, the vent hole is a circular through hole.

[0015] The beneficial effects of the utility model are:

[0016] By setting an air flow baffle inside the return box, the air flow to the air outlet is blocked, the pressure of the air flow at the air outlet is reduced, and pressure relief is achieved;

[0017] By setting up multiple layers of air flow baffles and staggering the vent holes on the air flow baffles, each layer of air flow baffles can hinder the flow of gas and achieve maximum pressure relief;

[0018] By setting the outer shape of the return box to be cylindrical and matching its arc-shaped end cover, the air pressure inside the return box is evenly distributed, preventing the box from being deformed or damaged due to uneven air pressure distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0020] Figure 2 This is a top view of the overall structure of Example 1;

[0021] Figure 3 for Figure 2 AA cross-sectional diagram in;

[0022] Figure 4Schematic diagram of the air flow baffle of Example 1.

[0023] Description of the symbols in the accompanying drawings: return box 1, end cover 11, water inlet 2, water outlet 3, air outlet 4, switch valve 41, air flow baffle 5, air vent 6. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined with one another, unless they conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the figures only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] Example 1:

[0027] like Figures 1 to 4 As shown, a low-pressure machine cooling water pressure relief return water tank includes a return box body 1; the return box body 1 is provided with a water inlet 2, a water outlet 3 and an air outlet 4; wherein the water inlet 2 is provided on the side of the return box body 1, in this example, the side of the return box body 1 is provided with multiple water inlets 2; the water outlet 3 is provided at the bottom of the return box body 1, and the air outlet 4 is provided at the top of the return box body 1; an air flow baffle 5 is provided and fixed in the return box body 1, and the air flow baffle 5 is connected to the inner surface of the return box body 1. The side walls are fixedly connected, including snap-on or welding; a plurality of air vents 6 are provided on the air flow baffle 5; the air flow baffle 5 is located between the water inlet 2 on the side of the return box 1 and the air outlet 4 on the top; the high-temperature gas will float upward from the water inlet 2 and separate from the falling cooling water liquid, and the upward-floating high-temperature gas will pass through the obstruction of the air flow baffle 5, and then flow out from the air outlet 4 through the air vents 6, thereby realizing the pressure relief of the high-temperature and high-pressure gas and transferring the pressure to the air flow baffle 5.

[0028] The return box 1 is provided with two or more air flow baffles 5. In this example, three air flow baffles 5 are provided in the return box. Different air flow baffles 5 are arranged in parallel with each other to achieve multiple pressure relief and minimize the air flow pressure at the air outlet 4. The vents 6 on two adjacent air flow baffles 5 are staggered, with the vents 6 on one air flow baffle 5 corresponding to the area without vents 6 on the other air flow baffle 5. This allows the airflow passing through the vents 6 of the lower air flow baffle 5 to impact the upper air flow baffle 5, and then move through the vents 6 of the upper air flow baffle 5 to the lower air flow baffle 5, achieving maximum pressure relief.

[0029] The return box 1 is generally cylindrical with a hollow interior; arc-shaped end covers 11 are provided at the top and bottom of the return box 1, the end cover 11 near the bottom end is provided with a water outlet 3, and the end cover 11 near the top end is provided with an air outlet 4; the design of the return box 1 and its end face is to make the air pressure in the return box 1 uniform, so as to prevent the box from being deformed or damaged due to uneven air pressure distribution.

[0030] The shape of the air flow baffle 5 is a circular plate corresponding to the return box 1 , and the edge of the air flow baffle 5 fits the inner wall of the return box 1 so that the air flow can only enter the air outlet 4 through the passage on the air flow baffle 5 .

[0031] The vent holes 6 on the air flow baffle 5 are distributed in a straight line along the radius of the air flow baffle 5; the vent holes 6 on adjacent radii are spaced apart by a set angle; adjacent vent holes 6 on the same radius are spaced apart by a set distance; in this example, the vent holes 6 are circular through holes.

[0032] The air outlet 4 is provided with an on-off valve 41 to facilitate the control of the opening and closing of the air outlet 4 .

[0033] During the implementation process, an air flow baffle 5 is set inside the return box 1 to block the air flow to the air outlet 4, reduce the pressure of the air flow at the air outlet 4, and achieve pressure relief; by setting multiple layers of air flow baffles 5, and staggering the air holes 6 on the air flow baffles 5, each layer of air flow baffles 5 can block the gas flow and achieve maximum pressure relief; by setting the outer shape of the return box 1 to be cylindrical, combined with its arc-shaped end cover 11, the air pressure inside the return box 1 is evenly distributed, preventing the box from being deformed or damaged due to uneven air pressure distribution.

[0034] The above description is merely a specific example of the present invention and does not constitute any limitation thereto. It is obvious that those skilled in the art, after understanding the content and principles of the present invention, may make various modifications and changes in form and details without departing from the principles and structure of the present invention. However, such modifications and changes based on the concept of the present invention are still within the scope of protection of the claims of the present invention.

Claims

1. A low-pressure machine cooling water pressure relief return tank, comprising a return tank body (1); characterized in that, The return box (1) is provided with a water inlet (2), a water outlet (3) and an air outlet (4); wherein the water inlet (2) is provided on the side of the return box (1), the water outlet (3) is provided on the bottom of the return box (1), and the air outlet (4) is provided on the top of the return box (1); an air flow baffle (5) is provided in the return box (1), and a plurality of air vents (6) are provided on the air flow baffle (5); the air flow baffle (5) is located between the water inlet (2) on the side of the return box (1) and the air outlet (4) on the top.

2. A low-pressure machine cooling water pressure relief return tank according to claim 1, characterized in that: Two or more airflow baffles (5) are arranged in the return box (1); different airflow baffles (5) are arranged parallel to each other.

3. The low-pressure machine cooling water pressure relief return tank according to claim 2, characterized in that: The vent holes (6) on the two adjacent air flow baffles (5) are staggered, with the vent holes (6) on one air flow baffle (5) corresponding to a region without vent holes (6) on the other air flow baffle (5).

4. A low-pressure machine cooling water pressure relief return tank according to claim 3, characterized in that: Three airflow baffles (5) are provided in the reflux box.

5. The low-pressure machine cooling water pressure relief return tank according to claim 1, characterized in that: The reflux box (1) is in the shape of a cylinder with a hollow interior.

6. The low-pressure machine cooling water pressure relief return tank according to claim 5, characterized in that: The top and bottom of the return box (1) are provided with arc-shaped end covers (11), the end cover (11) close to the bottom end is provided with a water outlet (3), and the end cover (11) close to the top end is provided with an air outlet (4).

7. The low-pressure machine cooling water pressure relief return tank according to claim 5, characterized in that: The airflow baffle (5) is in the shape of a circular plate corresponding to the return box (1), and the edge of the airflow baffle (5) is in contact with the inner wall of the return box (1).

8. The low-pressure machine cooling water pressure relief return tank according to claim 7, characterized in that: The vent holes (6) on the airflow baffle (5) are distributed in a straight line along the radial direction of the airflow baffle (5); the vent holes (6) on adjacent radii are spaced at a set angle; and adjacent vent holes (6) on the same radius are spaced at a set distance.

9. The low-pressure machine cooling water pressure relief return tank according to claim 1, characterized in that: The air outlet (4) is provided with an on-off valve (41).

10. The low-pressure machine cooling water pressure relief return tank according to claim 1, characterized in that: The vent hole (6) is a circular through hole.

Images