Control valve and cooling system

Abstract

The utility model discloses a control valve and a cooling system in the technical field of casting molds. The control valve comprises a valve body and a valve core, a first hole site, a second hole site and a third hole site which are communicated with one another are formed in the valve body; the valve element is arranged in the first hole site and is in sliding sealing connection with the first hole site, and the valve element at least can slide along the first hole site under the pushing of a fluid medium when the fluid medium is injected into the first hole site; a first groove is formed in the valve element in the circumferential direction, and the first groove communicates with the second hole site and the third hole site according to sliding of the valve element. The fluid medium is injected into the first hole site, the valve element slides along the first hole site under pushing of the fluid medium, the first groove in the valve element is conveniently controlled to be communicated with the second hole site and the third hole site, so that other fluid media circulate, and switching among different fluid media is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry mould technical field especially, relates to a control valve and cooling system. BACKGROUND

[0002] In the design and production process of foundry mould, in order to cooperate with casting process, usually a set of cooling system is set up to carry out rapid cooling to casting, thereby improve work efficiency and product quality. Among them, cooling system includes water cooling system and gas cooling system. But because of the different model and configuration of casting equipment, not all casting equipment has two cooling systems. Therefore, for the casting mould, it must use gas cooling system, but the casting equipment only has water cooling structure, or must use water cooling system, and the casting equipment only has gas cooling structure. The casting equipment with single cooling system cannot meet the design or production demand.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the utility model and should not be regarded as an acknowledgment or any form of suggestion that this information forms prior art that is publicly known. SUMMARY

[0004] The utility model aims at overcoming the deficiency in prior art, provides a control valve and cooling system to solve the technical problem that the casting equipment with single cooling system cannot meet the design or production demand.

[0005] To solve the above technical problem, the utility model is realized by adopting the following technical scheme:

[0006] Firstly, the utility model provides a control valve, including valve body and valve core, the first hole site, second hole site and third hole site are set up on the valve body and are mutually connected, the valve core is located in the first hole site, and is slidably connected with the first hole site, the valve core can at least slide along the first hole site under the push of fluid medium when the fluid medium is injected into the first hole site, the first recess is set up in the circumference of the valve core, and the first recess is connected with the second hole site and the third hole site according to the sliding of the valve core.

[0007] In combination with the first aspect, further, the first hole site is connected with first pipeline through first connector, and the fluid medium is injected into the first hole site through the first pipeline, and the first hole site is detachably connected with the first connector.

[0008] In combination with the first aspect, further, the second hole site and the third hole site are connected with second pipeline through second connector, and the second hole site and the third hole site are detachably connected with the second connector.

[0009] With the first aspect, further, the first hole site is provided with a reset mechanism for pushing the valve core to reset.

[0010] With the first aspect, further, the first hole site is a through hole penetrating the valve body, the reset mechanism comprises a closure and an elastic member; the closure is used for plugging an end of the first hole site which is not injected with fluid medium; the elastic member is arranged between the closure and the valve core, and is used for pushing the valve core to reset after the fluid medium is removed, so as to close the communication of the second hole site and the third hole site.

[0011] With the first aspect, further, the reset mechanism further comprises a limiting column for limiting the movement of the valve core; the elastic member is sleeved on the limiting column to guide the deformation of the elastic member.

[0012] With the first aspect, further, the valve core is further provided with a second groove in the circumferential direction, and a sealing ring is installed in the second groove.

[0013] With the first aspect, further, the valve body is further provided with a mounting hole for mounting the valve body to an external device.

[0014] The second aspect, the utility model also provides a cooling system, including the control valve of any one of the first aspect, the first hole site, the second hole site of control valve is connected with respective cooling medium delivery system.

[0015] With the second aspect, further, the cooling medium injected in the first hole site is different from the cooling medium injected in the second hole site.

[0016] The control valve and the cooling system provided by the utility model inject fluid medium in the first hole site, the valve core slides along the first hole site under the pushing of the fluid medium, the first groove on the valve core is communicated with the second hole site and the third hole site, so that other fluid medium is circulated, and the switching between different fluid media is realized; the reset mechanism is arranged in the first hole site, the elastic member in the reset mechanism pushes the valve core to reset after the fluid medium injected in the first hole site is removed, and the communication of the second hole site and the third hole site is closed; the utility model realizes the on-off of the communication path of the second hole site and the third hole site through the injection and removal of the fluid medium. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 This is a schematic diagram of the structure of a control valve provided in an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a valve body provided in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a valve core provided in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a control valve after fluid medium is injected, according to an embodiment of this utility model.

[0022] In the diagram: 1-Valve body; 101-First hole; 102-Second hole; 103-Third hole; 104-Mounting hole; 2-Valve core; 201-First groove; 202-Second groove; 3-Sealing ring; 4-First connector; 5-First pipe; 6-Second connector; 7-Second pipe; 8-Elastic element; 9-Limiting post; 10-Sealing element. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Example 1

[0024] This embodiment provides a control valve, including a valve body 1 and a valve core 2. (See reference...) Figure 2 The valve body 1 is provided with a first orifice 101, a second orifice 102, and a third orifice 103, and the three orifices are interconnected. In one embodiment, the first orifice 101 is located on one end face of the valve body 1 and can be a transverse orifice distributed along the axial direction of the valve body 1. Injecting fluid medium into the first orifice 101 provides thrust for the sliding of the valve core 2. In this embodiment, the other end face of the valve body 1 is closed to prevent the valve core 2 from being ejected from the valve body 1 due to continuous pressure impact from the fluid medium during sliding. The second orifice 102 and the third orifice 103 can be vertical orifices distributed radially along the valve body 1, and they are connected and penetrate the surface of the valve body 1. To facilitate better flow of fluid medium, the second orifice 102 and the third orifice 103 should be coaxially arranged and have the same cross-sectional area, allowing other fluid medium to flow out from the third orifice 103 after being injected into the second orifice 102.

[0025] A valve core 2 is installed in the first port 101. The valve core 2 is sealed to the first port 101 to prevent leakage of fluid media (especially liquids) and to avoid contaminating the fluid media injected into the second port 102 or affecting the use of other structural components in the valve body 1. (Reference) Figure 1 Under normal conditions, the connection path between the second orifice 102 and the third orifice 103 is blocked by the valve core 2. To control the opening and closing of this connection path, such as... Figure 3 As shown, a first groove 201 can be provided on the valve core 2. The cross-sectional area of ​​the first groove 201 should be smaller than that of the first hole 101, so that when the first groove 201 is connected with the second hole 102 and / or the third hole 103, the fluid medium injected into the second hole 102 can flow smoothly into the third hole 103.

[0026] In summary, when fluid medium is injected into the first port 101, the valve core 2 will be subjected to the pressure of the fluid medium. After overcoming the frictional resistance generated by the relative movement with the inner wall of the first port 101, the valve core 2 will slide along the first port 101 towards the closed end under the push of the fluid medium until the first groove 201 is connected with the second port 102 and / or the third port 103, connecting the second port 102 and the third port 103. The fluid medium injected into the second port 102 can flow normally to the third port 103.

[0027] It should be noted that the valve core 2 is installed in the first hole 101 of the valve body 1. Therefore, the quality requirements for the inner surface of the first hole 101 and the outer surface of the valve core 2 are higher, requiring a surface roughness (Ra0.4). Specifically, the inner surface of the first hole 101 needs to be reamed or ground, and the outer surface of the valve core 2 needs to be precision ground. Furthermore, the valve core 2 slides along the first hole 101 towards the closed end under the push of the fluid medium. The thrust of the fluid medium injected into the first hole 101 on the valve core 2 must be greater than the frictional resistance generated by the relative movement of the valve core 2 and the inner wall of the first hole 101.

[0028] In some embodiments, one end of the fluid medium injected into the first hole 101 is connected to a first connector 4, and the other end of the first connector 4 is connected to a first pipe 5. The fluid medium is injected into the first hole 101 through the first pipe 5. The non-communicating ends of the second hole 102 and the third hole 103 are each connected to a second connector 6, and the other end of each second connector 6 is connected to a second pipe 7. Another fluid medium is injected into the second hole 102 through the second pipe 7 connected to the second hole 102, flows through the third hole 103, and exits from the second pipe 7 connected to the third hole 103. Furthermore, threads can be provided on the non-communicating sides of the first hole 101, the second hole 102, and the third hole 103 for detachable connection. In actual design or production processes, molds or equipment can also be connected according to actual needs. Moreover, the connection method is not limited to threaded connections; other detachable connection methods are also possible. Example 2

[0029] This embodiment provides a control valve that differs from Embodiment 1 in that a reset mechanism is provided within the first orifice 101. This reset mechanism is used to push the valve core 2 back to its normal state after the fluid medium injected into the first orifice 101 is withdrawn, thus blocking the communication path between the second orifice 102 and the third orifice 103. Specifically, the reset mechanism includes an elastic element 8, which can be disposed within the first orifice 101 of the valve body 1 described in Embodiment 1. One end of the elastic element 8 is connected to the closed end of the first orifice 101, and the other end is connected to the valve core 2. When the fluid medium is injected into the first orifice 101 and pushes the valve core 2 to slide, the elastic element 8 is compressed. After the fluid medium is withdrawn, the elastic potential energy accumulated in the elastic element 8 is released, pushing the valve core 2 to reset. The intersection of the first groove 201 and the second orifice 102 and / or the third orifice 103 disappears, closing the communication between the second orifice 102 and the third orifice 103.

[0030] As an optional embodiment, the reset mechanism may also include a closure 10 for better mounting of the elastic element 8. For example... Figure 1 and Figure 2 As shown, the first hole 101 can be configured as a through hole penetrating the valve body 2. The sealing member 10 is detachably connected to the non-fluid medium injection end of the first hole 101 to replace the closed end of the first hole 101 in Embodiment 1, thereby sealing the first hole 101. At this time, the elastic member 8 is disposed between the sealing member 10 and the valve core 2.

[0031] Furthermore, the reset mechanism may also be provided with a limiting post 9, which is installed on the sealing member 10, and the elastic member 8 is sleeved on the limiting post 9. The limiting post 9 can both restrict the sliding of the valve core 2 in the first hole 101, thereby controlling the precise docking of the first groove 201 with the second hole 102 and / or the third hole 103; and serve as a guide post for the elastic member 8 to prevent deformation of the elastic member 8.

[0032] In this embodiment, the limiting post 9 is threaded onto the sealing member 10, and the sealing member 10 is threaded onto the first hole 101. In actual design or production, the connection method is not limited to threaded connection; other detachable connection methods or suitable connection methods can be used according to actual needs. Furthermore, the elastic member 10 can be a spring, but the material of the elastic member is not limited to springs; other elastic materials can also be used, as long as the same functional effect can be achieved.

[0033] As an optional embodiment, such as Figure 3 As shown, at least one second groove 202 is provided at the end of the valve core 2 near the fluid medium injection point, and a sealing ring 3 adapted to the second groove 202 is installed on the second groove 202. When the fluid medium injected into the first hole 101 is liquid, the sealing ring 3 and the second groove 202 can prevent the liquid medium from leaking into the valve body 1, thereby contaminating the fluid medium injected into the second hole 102 or affecting the use of other structural components inside the valve body 1. In this embodiment, two second grooves 202 are provided to better prevent fluid medium leakage; however, in practice, the number of second grooves 202 can be reasonably set according to requirements. In addition, in this embodiment, both the sealing ring 3 and the second groove 202 are set as O-type, which better fits the inner wall of the first hole 101 and enhances the protective effect. In specific implementation, other more fitting shapes can be designed according to the shape of the valve body 1, as long as fluid medium leakage is better prevented.

[0034] refer to Figure 1 The valve body 1 can also be provided with mounting holes 104 for installing the valve body 1 to external equipment for use. Example 3

[0035] This embodiment provides a cooling system, including a control valve as provided in Embodiment 1 and / or Embodiment 2, wherein the first port 101 and the second port 102 of the control valve are respectively connected to their respective cooling medium delivery systems to inject cooling medium. Furthermore, the cooling medium injected into the first port 101 is different from the cooling medium injected into the second port 102.

[0036] The following is combined Figure 1 and Figure 4 The working principle of the control valve provided in this embodiment will be further explained. This control valve can control the on / off state of the air-cooling mechanism through a water-cooling mechanism, thereby enabling the casting equipment with the water-cooling mechanism to meet the air-cooling requirements of the mold. Therefore, the cooling medium injected into the first hole 101 is cooling water, and the first pipe 5 and the first connector 4 are a water pipe and a water pipe connector, respectively; the cooling medium injected into the second hole 102 is gas, and the second pipe 7 and the second connector 6 are an air pipe and a pneumatic connector, respectively.

[0037] refer to Figure 1 When cooling water is not injected into the first hole 101 on valve body 1, there is no water pressure at point C, which is connected to the water cooling interface of the casting equipment. At this time, the connection passage between the second hole 102 and the third hole 103 is blocked by valve core 2, and the air passage from point A to point B is cut off.

[0038] refer to Figure 4 When the casting equipment starts injecting cooling water into the first hole 101, the valve core 2 will be subjected to the pressure of the cooling water (the cooling water pressure is usually 3-5 Bar) and slide towards the sealing member 10. In order for the valve core 2 to slide, the following conditions need to be met: the pressure of the cooling water on the valve core 2 should be greater than the sum of the frictional resistance experienced by the valve core 2 when sliding in the valve body 1 and the resistance experienced by the elastic member 8; during the movement of the valve core 2, the elastic member 8 will be compressed until the valve core 2 stops moving after contacting the limiting post 9. At this time, the first groove 201 is exactly aligned with the second hole 102 and / or the third hole 103, connecting the second hole 102 and the third hole 103, and the gas can flow normally from point A to point B.

[0039] After the casting is cooled, the water pressure to point C is shut off by the casting equipment, and the cooling water injected into the first hole 101 is returned. The pressure of the cooling water on the valve core 2 disappears, but the elastic potential energy accumulated by the elastic element 8 is released. The valve core 2 will be pushed by the elastic element 8, causing the valve core 2 to move towards point C. At this time, the following needs to be met: the pushing force of the elastic element 8 on the valve core 2 should be greater than the frictional resistance it experiences when sliding in the valve body 1 in order to overcome the resistance and move. During the movement of the valve core 2, the intersection of the first groove 201 with the second hole 102 and / or the third hole 103 disappears, the connecting path between the second hole 102 and the third hole 103 is blocked by the valve core 2, and the airflow from point A to point B is cut off.

[0040] In this embodiment, the on / off state of the air-cooling mechanism is controlled by a water-cooling mechanism, thereby enabling the casting equipment with the water-cooling mechanism to meet the mold air-cooling requirements. However, in actual use, point C can be replaced with the gas pressure injection point, and the flow path from point A to point B can be the cooling water flow path.

[0041] This embodiment of the invention controls the movement of the first groove 201 on the valve core 2 by pressurizing and depressurizing the first hole 101 on the valve body 1, thereby controlling the opening and closing of the communication path between the second hole 102 and the third hole 103. The control valve provided by this embodiment has a simple structure and is easy to manufacture; it can be installed on casting equipment without modifying the casting equipment, and can achieve a combination of water cooling and air cooling; its structure is flexible and versatile, and can achieve switching between different fluid media, making it widely applicable.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this utility model and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A control valve, characterized in that, Includes valve body (1) and valve core (2); The valve body (1) is provided with a first hole (101), a second hole (102) and a third hole (103) that are interconnected. The valve core (2) is disposed in the first hole (101) and is slidably sealed to the first hole (101). The valve core (2) can slide along the first hole (101) under the push of the fluid medium when the fluid medium is injected into the first hole (101). The valve core (2) has a first groove (201) circumferentially provided. The first groove (201) is connected to the second hole (102) and the third hole (103) according to the sliding of the valve core (2).

2. The control valve according to claim 1, characterized in that, The first port (101) is connected to the first pipe (5) through the first connector (4), and the fluid medium is injected into the first port (101) through the first pipe (5); the first port (101) and the first connector (4) are detachably connected.

3. The control valve according to claim 1 or 2, characterized in that, The second hole (102) and the third hole (103) are both connected to the second pipe (7) through the second connector (6), and the second hole (102) and the third hole (103) are detachably connected to the second connector (6).

4. The control valve according to claim 1, characterized in that, The first hole (101) is provided with a reset mechanism to push the valve core (2) to reset.

5. The control valve according to claim 4, characterized in that, The first hole (101) is a through hole that penetrates the valve body (1), and the reset mechanism includes a sealing member (10) and an elastic member (8). The sealing member (10) is used to seal one end of the non-fluid medium injected into the first orifice (101); The elastic element (8) is disposed between the sealing element (10) and the valve core (2). The elastic element (8) is used to push the valve core (2) to reset after the fluid medium is withdrawn, so as to close the connection between the second hole (102) and the third hole (103).

6. The control valve according to claim 5, characterized in that, The reset mechanism also includes a limiting post (9), which is used to limit the movement of the valve core (2); the elastic element (8) is sleeved on the limiting post (9) to realize the deformation guidance of the elastic element (8).

7. The control valve according to claim 1, characterized in that, The valve core (2) is also provided with a second groove (202) in the circumferential direction, and a sealing ring (3) is installed in the second groove (202).

8. The control valve according to claim 1, characterized in that, The valve body (1) is also provided with a mounting hole (104) for installing the valve body (1) to an external device.

9. A cooling system, characterized in that, The control valve includes any one of claims 1 to 8, wherein the first port (101) and the second port (102) of the control valve are respectively connected to their respective cooling medium delivery systems.

10. The cooling system according to claim 9, characterized in that, The cooling medium injected into the first hole (101) is different from the cooling medium injected into the second hole (102).

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