Machine tool fluid tank replenishment control valve

Abstract

This utility model belongs to the field of valve device technology and discloses a machine tool liquid tank replenishment control valve, including a valve body and a liquid outlet pipe opened at the bottom of the valve body. A first liquid inlet pipe and a second liquid inlet pipe are respectively opened on both sides of the valve body. The first liquid inlet pipe and the second liquid inlet pipe are connected. The liquid outlet pipe is perpendicularly arranged to the connection of the first liquid inlet pipe and the second liquid inlet pipe and is connected to each other, so that the pipeline of the first liquid inlet pipe, the second liquid inlet pipe and the liquid outlet pipe are arranged in a T-shape. This utility model integrates the valve body in a T-shape and has two independently controllable semi-circular valve stems built in. It can control the liquid inlet of two liquid inlet pipes simultaneously in a single valve body. Compared with the traditional solution of two independently placed valve structures, the space occupied is greatly reduced, the overall structure is greatly simplified, and the installation and arrangement of the valve is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of valve device technology, and more specifically, to a machine tool liquid tank replenishment control valve. Background Technology

[0002] During machining, the machine tool's cutting fluid tank plays a crucial role in providing cooling and lubrication for the cutting tools and workpieces. To ensure the stability of the machining process and the quality of the workpiece, the coolant level in the tank needs to be maintained within a reasonable working range. The coolant replenishment control valve is the key device for achieving this automatic control. It can automatically open or close according to changes in the coolant level in the tank, replenishing the consumed coolant.

[0003] However, when using machine tools for machining, it is often necessary to use emulsion and oil-based cutting fluid simultaneously or alternately. In the existing technology, each type of fluid is usually provided with a separate replenishment pipeline and a corresponding control valve. This configuration requires the installation of two control valve devices with basically the same structure. Although this separate dual-valve design can achieve independent control of each circuit, it requires the configuration of two sets of control valves and related drive components, which not only occupies more space, increases system complexity and installation cost, but also significantly increases the workload of maintenance and the difficulty of coordinated control.

[0004] In view of this, we propose a machine tool liquid tank replenishment control valve. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this utility model is to provide a machine tool fluid tank replenishment control valve to solve the problems mentioned in the background art, such as large space occupation, system complexity and difficulty in maintenance and coordination when the traditional machine tool fluid tank replenishment control valve adopts a dual-valve design to simultaneously control the replenishment of emulsion and oil-based cutting fluid.

[0007] 2. Technical Solution

[0008] A machine tool liquid tank replenishment control valve includes a valve body and an outlet pipe located at the bottom of the valve body. A first inlet pipe and a second inlet pipe are respectively provided on both sides of the valve body. The first inlet pipe and the second inlet pipe are connected. The outlet pipe is perpendicularly arranged to the connection between the first inlet pipe and the second inlet pipe and is connected to each other, so that the pipeline of the first inlet pipe, the second inlet pipe and the outlet pipe are arranged in a T-shape. Two valve stems, a first valve stem and a second valve stem, with semi-circular cross sections and overlapping each other are slidably arranged in the valve body. The outer surfaces of the first valve stem and the second valve stem overlap the inner wall of the outlet pipe. The first valve stem and the second valve stem are used to control the opening and closing of the first inlet pipe and the second inlet pipe, respectively.

[0009] Preferably, a mounting ring is fixedly connected to the top of the valve body, and a first electric push rod and a second electric push rod are fixedly connected to the mounting ring. A first movable block and a second movable block are fixedly connected to the extended ends of the first electric push rod and the second electric push rod, respectively. Movable rods are fixedly connected to both the first movable block and the second movable block. The two movable rods are fixedly connected to the first valve stem and the second valve stem, respectively, so that the first electric push rod and the second electric push rod can control the opening and closing of the first liquid inlet pipe and the second liquid inlet pipe, respectively.

[0010] Preferably, a first pipeline is provided on the side of the first inlet pipe and the second inlet pipe near the valve body, and a second pipeline is provided on the side of the first inlet pipe and the second inlet pipe away from the valve body. The cross-section of the first pipeline is rectangular, and the cross-section of the second pipeline is circular. The length of the first pipeline is less than the diameter of the second pipeline, and the width of the first pipeline is less than the diameter of the circle formed by the first valve stem and the second valve stem.

[0011] Preferably, the valve body has a movable groove that matches the movable rod.

[0012] Preferably, connecting rods are fixedly connected to both sides of the movable rod, and sliders are fixedly connected to each of the multiple connecting rods. A groove adapted to the size of the slider is formed on the inner wall of the valve body.

[0013] Preferably, a connecting strip with a T-shaped cross-section is fixedly connected to the side of the first valve stem close to the second valve stem, and a connecting groove adapted to the size of the connecting strip is opened on the side of the second valve stem close to the first valve stem.

[0014] Preferably, a sealing ring is fixedly connected at the connection between the valve body and the first valve stem and the second valve stem.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. This utility model uses a T-shaped integrated valve body with two independently controllable semi-circular valve stems built in, which can simultaneously control the liquid inlet of two inlet pipes within a single valve body. Compared with the traditional two independently placed valve structures, the space occupied is greatly reduced, the overall structure is greatly simplified, and the installation and arrangement of the valve is more convenient.

[0018] 2. This utility model, through the setting of a first electric push rod driving a first valve stem to control the first liquid inlet pipe and a second electric push rod driving a second valve stem to control the second liquid inlet pipe, ensures that the replenishment actions of two different additives, emulsion and oil-based cutting fluid, are completely independent, and can achieve precise opening and closing control. Combined with the connecting mechanism between valve stems, the guide of the slider groove and the sealing ring, the reliability, stability and sealing performance of the action are significantly improved.

[0019] 3. This utility model integrates a complex system that requires two independent valves, control circuits and interfaces into a single control unit, so that users only need to maintain, replace or debug this one integrated valve, which greatly simplifies daily maintenance work and shortens maintenance time. At the same time, the high integration of drive components and valve body makes its control and monitoring easier to manage in a unified manner, reducing the overall complexity of the system and effectively reducing the cost of procurement, installation and maintenance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a diagram showing the state of the second valve stem of this utility model when it is lifted;

[0023] Figure 4 This is an exploded view of the first valve stem and the second valve stem of this utility model;

[0024] Figure 5 This is a diagram showing the state of the first pipeline when the second valve stem of this utility model is opened;

[0025] Figure 6 This is a cross-sectional schematic diagram of the valve body of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Valve body; 2. First inlet pipe; 3. Second inlet pipe; 4. Outlet pipe; 5. Mounting ring; 6. First electric push rod; 7. Second electric push rod; 8. First movable block; 9. Second movable block; 10. Movable rod; 101. Movable groove; 11. First valve stem; 12. Second valve stem; 13. Connecting strip; 14. Connecting groove; 15. Sealing ring; 16. Connecting rod; 17. Slider; 171. Slide groove; 18. First pipeline; 19. Second pipeline. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0030] Please see Figure 1-6 This utility model provides a technical solution:

[0031] The machine tool liquid tank replenishment control valve includes a valve body 1 and an outlet pipe 4 located at the bottom of the valve body 1. A first inlet pipe 2 and a second inlet pipe 3 are respectively located on both sides of the valve body 1. The first inlet pipe 2 and the second inlet pipe 3 are connected. The outlet pipe 4 is perpendicularly connected to the first inlet pipe 2 and the second inlet pipe 3, forming a T-shape. Two valve stems 11 and 12 with semi-circular cross-sections are slidably disposed inside the valve body 1 and overlap each other. 2. The outer surfaces of the first valve stem 11 and the second valve stem 12 overlap with the inner wall of the outlet pipe 4. The first valve stem 11 and the second valve stem 12 are used to control the opening and closing of the first inlet pipe 2 and the second inlet pipe 3, respectively. With this configuration, a compact valve body 1 replaces the traditional two independent valves, significantly reducing the space occupied. The T-shaped layout optimizes the flow channel. The double semi-circular valve stem structure can not only fit tightly to form an effective seal to close the channel, but also move independently to achieve selective independent opening or closing of the two fluid paths.

[0032] In addition, a mounting ring 5 is fixedly connected to the top of the valve body 1, and a first electric push rod 6 and a second electric push rod 7 are fixedly connected to the bottom of the mounting ring 5. The extended ends of the first electric push rod 6 and the second electric push rod 7 are respectively fixedly connected to a first movable block 8 and a second movable block 9. Movable rods 10 are fixedly connected to both the first movable block 8 and the second movable block 9. The two movable rods 10 are respectively fixedly connected to the first valve stem 11 and the second valve stem 12, so that the first electric push rod 6 and the second electric push rod 7 can control the opening and closing of the first liquid inlet pipe 2 and the second liquid inlet pipe 3 respectively. This setting allows each electric push rod to independently control its corresponding valve stem, and their actions do not interfere with each other, ensuring the independence and accuracy of the opening and closing control of the two liquid channels. Since the electric push rod has the advantages of controllable stroke and easy integration with electrification and automation, in specific implementation, the sliding position of the first valve stem 11 and the second valve stem 12 can be precisely controlled by the first electric push rod 6 and the second electric push rod 7, thereby accurately controlling the opening and closing degree of the corresponding liquid inlet to achieve more precise flow control.

[0033] Secondly, a first pipeline 18 is provided on the side of the first inlet pipe 2 and the second inlet pipe 3 near the valve body 1, and a second pipeline 19 is provided on the side of the first inlet pipe 2 and the second inlet pipe 3 away from the valve body 1. The cross-section of the first pipeline 18 is rectangular, and the cross-section of the second pipeline 19 is circular. The length of the first pipeline 18 is less than the diameter of the second pipeline 19, and the width of the first pipeline 18 is less than the diameter of the circle formed by the first valve stem 11 and the second valve stem 12. This arrangement improves the sealing reliability of the valve. When the valve is closed, the valve stem is pressed against the two side walls of the rectangular cross-section in the width direction to form a surface contact seal, reducing the possibility of internal leakage.

[0034] Furthermore, the valve body 1 is provided with a movable groove 101 that is adapted to the movable rod 10. The movable groove 101 is configured to provide the necessary movement space for the movable rod 10. The movable groove 101 ensures that the movable rod 10 maintains the correct linear trajectory within the valve body 1, preventing it from shaking, deflecting, or wobbling in the non-axial direction, thus ensuring the stable operation of the first valve rod 11 and the second valve rod 12.

[0035] Furthermore, connecting rods 16 are fixedly connected to both sides of the movable rod 10, and sliders 17 are fixedly connected to multiple connecting rods 16. A groove 171 adapted to the size of the slider 17 is opened on the inner wall of the valve body 1. With this arrangement, the slider 17 slides in the groove 171 and together with the movable groove 101 mentioned above, it forms a precise guiding system, which greatly increases the rigidity and stability of the transmission mechanism, prevents the valve rod from deflecting or twisting, and improves the sealing reliability and service life.

[0036] Specifically, a connecting strip 13 with a T-shaped cross-section is fixedly connected to the side of the first valve stem 11 close to the second valve stem 12. A connecting groove 14 with a size matching the connecting strip 13 is opened on the side of the second valve stem 12 close to the first valve stem 11. This arrangement ensures that the two valve stems are automatically and accurately aligned when they are in the closed state, ensuring that the cylindrical surface formed after they are joined is complete and located at the same center, thereby providing the best sealing effect. Secondly, the T-shaped groove and T-shaped strip further improve the relative stability of the first valve stem 11 and the second valve stem 12, preventing the two valve stems from sliding or misaligning relative to each other under fluid impact or valve operation, enhancing the integrity and rigidity of the combined valve core, which also helps to maintain the relative position stability of the valve stems.

[0037] In addition, a sealing ring 15 is fixedly connected at the connection between the valve body 1 and the first valve stem 11 and the second valve stem 12. The sealing ring 15 is designed to fill the gap between the valve stem and the valve body 1 through elastic deformation, forming a dynamic seal. This effectively prevents the coolant in the working state from leaking to the outside of the valve body 1 or into another valve stem cavity through the dynamic fit gap, further ensuring the sealing effect of the device. In actual use, the sealing ring 15 needs to be regularly maintained, inspected or replaced to ensure the sealing effect.

[0038] Working principle:

[0039] When neither coolant needs replenishment, the two semi-circular valve stems overlap tightly to form a complete cylindrical surface that presses against the inner wall of the outlet pipe 4. At the same time, the outer sides of the two valve stems are respectively pressed against the two side walls of the rectangular cross-section of the first pipeline 18 of the first inlet pipe 2 and the second inlet pipe 3, forming a surface contact seal, thereby completely blocking the two liquid flow channels and achieving a tight shut-off state.

[0040] When a liquid tank needs replenishment, the control system activates the first electric push rod 6, which pushes the first movable block 8, the movable rod 10, and the first valve rod 11 fixed thereto retract along the axis, disengaging from the rectangular pipe wall and the sealing position of the outlet pipe 4. At this time, the passage of the first inlet pipe 2 is opened, and the emulsion flows in through the circular cross-section second pipe 19, enters the valve chamber through the rectangular section first pipe 18, and flows out to the outlet pipe 4. At the same time, the second valve rod 12 remains closed to block the passage of the oil-based cutting fluid, preventing cross-contamination of the media. When switching to replenishment of oil-based cutting fluid, the second electric push rod 7 independently controls the action of the second valve rod 12. The principle is the same as above. The two actions do not interfere with each other, and the electric push rod can precisely adjust the opening and closing stroke of the valve rod to achieve flow control.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A machine tool fluid tank replenishment control valve, characterized in that: The valve body includes a valve body (1) and an outlet pipe (4) at the bottom of the valve body (1). A first inlet pipe (2) and a second inlet pipe (3) are respectively provided on both sides of the valve body (1). The first inlet pipe (2) is connected to the second inlet pipe (3). The outlet pipe (4) is vertically arranged and connected to the first inlet pipe (2) and the second inlet pipe (3) at the connection point, so that the pipelines of the first inlet pipe (2), the second inlet pipe (3) and the outlet pipe (4) are arranged in a T-shape. Two valve stems (11) and (12) with semi-circular cross sections are slidably arranged inside the valve body (1) and overlap each other. The outer surfaces of the first valve stem (11) and the second valve stem (12) overlap with the inner wall of the outlet pipe (4). The first valve stem (11) and the second valve stem (12) are used to control the opening and closing of the first inlet pipe (2) and the second inlet pipe (3) respectively.

2. The machine tool fluid tank replenishment control valve as described in claim 1, characterized in that: A mounting ring (5) is fixedly connected to the top of the valve body (1). A first electric push rod (6) and a second electric push rod (7) are fixedly connected to the mounting ring (5). A first movable block (8) and a second movable block (9) are fixedly connected to the extended ends of the first electric push rod (6) and the second electric push rod (7), respectively. Movable rods (10) are fixedly connected to both the first movable block (8) and the second movable block (9). The two movable rods (10) are fixedly connected to the first valve stem (11) and the second valve stem (12), respectively, so that the first electric push rod (6) and the second electric push rod (7) can control the opening and closing of the first liquid inlet pipe (2) and the second liquid inlet pipe (3), respectively.

3. The machine tool fluid tank replenishment control valve as described in claim 2, characterized in that: The first inlet pipe (2) and the second inlet pipe (3) are provided with a first pipe (18) on the side close to the valve body (1), and the first inlet pipe (2) and the second inlet pipe (3) are provided with a second pipe (19) on the side away from the valve body (1). The cross-section of the first pipe (18) is rectangular, and the cross-section of the second pipe (19) is circular. The length of the first pipe (18) is less than the diameter of the second pipe (19), and the width of the first pipe (18) is less than the diameter of the circle formed by the first valve stem (11) and the second valve stem (12).

4. The machine tool fluid tank replenishment control valve as described in claim 3, characterized in that: The valve body (1) is provided with a movable groove (101) that is adapted to the movable rod (10).

5. The machine tool fluid tank replenishment control valve as described in claim 3, characterized in that: Both sides of the movable rod (10) are fixedly connected to connecting rods (16), and multiple connecting rods (16) are fixedly connected to sliders (17). The inner wall of the valve body (1) is provided with a sliding groove (171) that matches the size of the slider (17).

6. The machine tool fluid tank replenishment control valve as described in claim 3, characterized in that: The first valve stem (11) is fixedly connected to a connecting strip (13) with a T-shaped cross section on the side close to the second valve stem (12), and the second valve stem (12) is provided with a connecting groove (14) that matches the size of the connecting strip (13) on the side close to the first valve stem (11).

7. The machine tool fluid tank replenishment control valve as described in claim 6, characterized in that: A sealing ring (15) is fixedly connected to the connection between the valve body (1) and the first valve stem (11) and the second valve stem (12).

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