A movable six-way valve flow path control device

Abstract

The utility model provides a movable six -way valve flow path control device, include: fixed bottom plate, valve body and push -and -pull subassembly, the valve body is through bottom T type sliding groove and the cooperation on T type guide rail of fixed bottom plate, realizes the installation of sliding, be equipped with first flow path passageway and six second flow path passageways of symmetrical distribution in the valve body, be equipped with the one -way valve of independent control on -off in each second flow path passageway entrance, the cover plate is detachable and is convenient for maintenance, push -and -pull subassembly is by fixed axle, movable axle and spring and is composed, realizes the reciprocating movement of valve body and accurate positioning, the outer wall of one -way valve is equipped with fluorine rubber sealing ring, ensures the reliable sealing, the valve body adopts the corrosion -resistant plastic integral injection molding, is resistant to strong acid strong alkali, is applicable to complex working condition. The control device of the utility model discards the traditional rotary valve core structure, has no power drive, reduces the wear and tear and the residue, prevents the cross -contamination, has simple structure, easy installation, stable operation, long -lived etc.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring equipment technology, specifically to a flow path control device for a movable six-way valve. Background Technology

[0002] In multi-flow path switching control scenarios, six-way valves need to switch between different flow paths. Existing technologies generally adopt a structure in which the internal valve core is driven by a motor to rotate, thereby changing the flow path connection state through the rotation of the valve core. However, such traditional six-way valves exhibit significant defects under complex working conditions (such as highly corrosive liquids and high-viscosity fluids), and their structural design has inherent deficiencies, making it difficult to meet the requirements of modern testing equipment that demands high precision, long life, and easy maintenance. There is an urgent need to solve the problems of flow path control reliability, convenience, and environmental adaptability through structural innovation.

[0003] The shortcomings of existing technology:

[0004] 1. Complex structure and high manufacturing cost: Traditional six-way valves rely on a motor to drive the valve core to rotate and switch the flow path. The internal structure includes a precision valve core, sealing components and drive mechanism, which leads to high requirements for processing accuracy, high assembly difficulty, and significantly increased manufacturing cost. In addition, the valves are large in size and difficult to adapt to compact testing equipment.

[0005] 2. Valve core wear and leakage risk: Frequent rotation of the valve core will cause frictional wear between the sealing material (such as rubber, plastic) and the valve body contact surface. Long-term use can easily lead to problems such as seal failure and liquid leakage. Especially in high viscosity fluid scenarios, the valve core rotation resistance increases, the wear rate accelerates, and further reduces the reliability of the equipment.

[0006] 3. Flow path residue and cross-contamination: When the flow path is switched, a small amount of liquid can easily remain in the gap between the valve core and the valve body, forming a detection dead zone. This leads to cross-contamination of liquids in different flow paths, affecting the accuracy of the detection results, especially in trace analysis scenarios.

[0007] 4. Poor adaptability to highly corrosive environments: Traditional valve bodies are mostly made of metal or ordinary engineering plastics, which are easily corroded when in contact with highly corrosive liquids (such as acidic reagents in heavy metal detection), leading to valve body damage or flow path contamination; the valve core sealing material has insufficient corrosion resistance, further shortening the service life of the equipment.

[0008] 5. Inconvenient maintenance and limited operation: The valve core and seals are integrated inside the valve body. During maintenance, the entire drive mechanism and valve body need to be disassembled, and the replacement process is cumbersome and time-consuming. Moreover, the fixed structure restricts the external operating space, making it difficult to achieve rapid maintenance and affecting the continuous operation efficiency of the equipment.

[0009] 6. Insufficient power dependence and stability: Relying on external power sources such as motors for driving results in high energy consumption and the risk of circuit failure. In environments without stable power or with vibration, power transmission is easily interfered with, leading to inaccurate flow path switching or jamming, which cannot meet the long-term stable operation requirements of unattended monitoring equipment.

[0010] Therefore, existing technologies have shortcomings and need further improvement. Utility Model Content

[0011] To address the problems existing in the prior art, this utility model provides a flow path control device for a movable six-way valve.

[0012] To achieve the above objectives, the specific solution of this utility model is as follows:

[0013] This utility model provides a flow path control device for a movable six-way valve, comprising:

[0014] Fixed base plate, valve body, push-pull assembly;

[0015] The valve body includes a lower plate and a cover plate disposed above it;

[0016] The fixed base plate is provided with two T-shaped guide rails, and the lower side of the lower plate of the valve body is provided with two T-shaped slide grooves that match the shape of the T-shaped guide rails. The T-shaped guide rails are set in the T-shaped slide grooves, so that the valve body can be slidably installed on the fixed base plate.

[0017] The lower plate of the valve body has a first flow path channel along its length. Three second flow path channels are respectively provided on both sides of the first flow path channel. Each second flow path channel has an opening with a groove, and each groove has a one-way valve. The one-way valve is connected to the second flow path channel, and each one-way valve independently controls the opening and closing of the corresponding second flow path channel. The cover plate is provided on the lower plate to cover the groove and the one-way valve in the groove, which facilitates replacement and maintenance.

[0018] The six second flow paths and their corresponding one-way valves form a six-way valve structure. The centerlines of the first flow path and the six second flow paths are symmetrically distributed on the same horizontal plane.

[0019] One end of the push-pull assembly is fixedly mounted on the fixed base plate and the other end is mounted on the valve body. It is used to push and pull the valve body to move back and forth on the fixed base plate, thereby changing the position of the one-way valve.

[0020] Furthermore, the push-pull assembly includes: a fixed shaft, a first spring, and a movable shaft;

[0021] One end of the fixed shaft is fixed to the fixed base plate, and the other end is inserted into the movable shaft. The other end of the movable shaft is installed on the lower plate of the valve body.

[0022] The first spring is installed inside the movable shaft. When the movable shaft moves away from the fixed shaft, the first spring is compressed, and when the movable shaft moves away from the fixed shaft, the first spring extends.

[0023] The movable shaft has a first mounting post inside, and the fixed shaft has a second mounting post at one end inserted into the movable shaft. The two ends of the first spring are respectively mounted on the first mounting post and the second mounting post.

[0024] Furthermore, the edge of the cover plate of the valve body extends downward and fastens to the lower plate;

[0025] The cover plate is fixed to the lower plate by screws. The screws are removed to remove the cover plate for replacing the one-way valve.

[0026] Furthermore, a fluororubber sealing ring is provided on the outer wall of the one-way valve at the connection between the one-way valve and the second flow path channel for sealing.

[0027] Furthermore, the fixed base plate is provided with six through holes running vertically through the base plate;

[0028] Each check valve has a first through hole at its front end, which is used to connect a pipe to the check valve.

[0029] Furthermore, the T-shaped guide rail is arranged along the length of the fixed base plate to form a sliding track, and the length of the sliding track is greater than the maximum displacement stroke of the valve body.

[0030] Furthermore, the valve body is manufactured using an integral injection molding process, and the valve body material is polytetrafluoroethylene or polyvinylidene fluoride corrosion-resistant plastic.

[0031] The technical solution of this utility model has the following beneficial effects:

[0032] 1. Flexible flow path switching and strong adaptability to working conditions: Through the sliding cooperation between the T-shaped guide rail of the fixed base plate and the T-shaped through groove of the valve body, the valve body can move back and forth on the fixed base plate. Combined with the spring flexible connection structure of the push-pull assembly, the flow path position can be precisely adjusted without the need for a power source. It does not rely on complex drive mechanisms such as external motors and can adapt to various installation spaces and working conditions, especially suitable for compact environments or vibration scenarios.

[0033] 2. Simple structure and long service life: The valve core-free design controls the opening and closing of the second flow path through six independent one-way valves, avoiding the wear and mechanical loss of seals caused by the rotation of traditional valve cores; there is no internal power source to drive it, reducing friction of moving parts, significantly improving the long-term stability and service life of the device, and reducing the maintenance frequency.

[0034] 3. Low residue and no cross-contamination: The one-way valve independently controls the opening and closing of each flow path. The flow path centerline is horizontally symmetrically distributed and there is no valve core gap. The liquid flows smoothly through the path, effectively reducing the residual liquid volume when switching flow paths. Combined with the sealing design of the fluororubber sealing ring, it further eliminates liquid leakage and cross-contamination between different flow paths, meeting the cleanliness requirements of high-precision detection scenarios.

[0035] 4. Convenient maintenance and quick replacement: The valve body cover is fastened to the lower plate with screws. After disassembly, it can directly access the check valve in the groove, supporting independent replacement and repair of individual check valves without the need to disassemble the entire valve body or drive structure, greatly simplifying the maintenance process and improving equipment maintenance efficiency.

[0036] 5. Strong corrosion resistance and environmental adaptability: The valve body is integrally injection molded from corrosion-resistant polytetrafluoroethylene or polyvinylidene fluoride plastic. The flow path channels and one-way valve installation structure that come into contact with the liquid are all made of corrosion-resistant materials, which can effectively resist the erosion of acidic reagents and highly corrosive liquids in heavy metal detection, thus broadening the application scenarios of the device in harsh environments such as chemical, pharmaceutical, and water quality monitoring.

[0037] 6. Easy installation and space adaptability: The T-shaped guide rail sliding track is longer than the maximum displacement stroke of the valve body, ensuring smooth movement and accurate positioning of the valve body; the overall structure is compact and small in size, and the six first through holes of the fixed base plate facilitate quick pipe connection. Combined with the flexible connection design of the push-pull component, it reduces the difficulty of installation and commissioning and adapts to the integration needs of various equipment. Attached Figure Description

[0038] Figure 1 This is a top view of the present invention;

[0039] Figure 2 This is a vertical sectional view of the present invention;

[0040] Figure 3 This is a horizontal sectional view of the present invention.

[0041] Attached image captions:

[0042] 1. Fixed base plate; 2. Valve body; 3. Lower plate; 4. Cover plate; 5. T-shaped guide rail; 6. T-shaped slide groove; 7. First flow path channel; 8. Second flow path channel; 9. Groove; 10. One-way valve; 11. Fixed shaft; 12. First spring; 13. Movable shaft; 14. First mounting post; 15. Second mounting post; 16. Screw; 17. Sealing ring; 18. First through hole. Detailed Implementation

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0044] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this embodiment, the terms "upper," "lower," "front," "rear," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0047] Combination Figures 1-3 As shown, this utility model provides a movable six-way valve flow path control device, including: a fixed base plate 1, a valve body 2, and a push-pull assembly;

[0048] The valve body 2 includes a lower plate 3 and a cover plate 4 disposed above it;

[0049] The fixed base plate 1 is provided with two T-shaped guide rails 5, and the lower side of the lower plate 3 of the valve body 2 is provided with two T-shaped sliding grooves 6 that match the shape of the T-shaped guide rails 5. The T-shaped guide rails 5 are placed in the T-shaped sliding grooves 6, so that the valve body 2 can be slidably installed on the fixed base plate 1.

[0050] The lower plate 3 of the valve body 2 has a first flow path channel 7 arranged along its length. Three second flow path channels 8 are arranged on both sides of the first flow path channel 7, and a groove 9 is provided at the opening of each second flow path channel 8. A one-way valve 10 is provided in each groove 9. The one-way valve 10 is connected to the second flow path channel 8, and each one-way valve 10 controls the opening and closing of the corresponding second flow path channel 8 independently. The cover plate 4 is provided on the lower plate 3 to cover the groove 9 and the one-way valve 10 in the groove 9, so as to facilitate replacement and maintenance.

[0051] The six second flow paths 8 and the corresponding one-way valves 10 form a six-way valve structure. The center lines of the first flow path 7 and the six second flow paths 8 are located on the same horizontal plane and are symmetrically distributed.

[0052] One end of the push-pull assembly is fixedly mounted on the fixed base plate 1 and the other end is mounted on the valve body 2. It is used to push and pull the valve body 2 to move back and forth on the fixed base plate 1, thereby changing the position of the valve body.

[0053] The push-pull assembly includes: a fixed shaft 11, a first spring 12, and a movable shaft 13;

[0054] One end of the fixed shaft 11 is fixed to the fixed base plate 1, and the other end is inserted into the movable shaft 13. The other end of the movable shaft 13 is installed on the lower plate 3 of the valve body 2.

[0055] The first spring 12 is installed inside the movable shaft 13. When the movable shaft 13 moves toward the fixed shaft 11, the first spring 12 is compressed, and when the movable shaft 13 moves away from the fixed shaft 11, the first spring 12 extends.

[0056] The movable shaft 13 is provided with a first mounting post 14 inside, and the fixed shaft 11 is inserted into the movable shaft 13 with a second mounting post 15 at one end. The two ends of the first spring 12 are respectively mounted on the first mounting post 14 and the second mounting post 15.

[0057] The edge of the cover plate 4 of the valve body 2 extends downward and fastens to the lower plate 3;

[0058] The edge of the cover plate 4 is fixed to the lower plate 3 by screws 16. The cover plate 4 can be removed by removing the screws 16 and then used to replace the one-way valve 10.

[0059] A fluororubber sealing ring 17 is provided on the outer wall of the one-way valve 10 at the connection between the one-way valve 10 and the second flow path channel 8 for sealing.

[0060] The fixed base plate 1 is provided with six through holes 18 extending vertically through the top and bottom;

[0061] Each check valve 10 has a first through hole 18 at its front end, which is used to connect a pipe to the check valve 10.

[0062] The T-shaped guide rail 5 is arranged along the length of the fixed base plate 1 to form a sliding track, and the length of the sliding track is greater than the maximum displacement stroke of the valve body 2.

[0063] The valve body 2 is manufactured using an integral injection molding process, and the material of the valve body 2 is polytetrafluoroethylene or polyvinylidene fluoride corrosion-resistant plastic.

[0064] The principle of this utility model is as follows:

[0065] 1. Basic installation and sliding mechanism

[0066] The T-shaped guide rail on the fixed base plate 1 and the T-shaped through groove on the lower plate 3 of the valve body 2 form a sliding pair, allowing the valve body 2 to reciprocate along the length of the fixed base plate 1. The length of the sliding rail is greater than the maximum displacement stroke of the valve body 2, ensuring smooth movement without jamming.

[0067] The push-pull assembly consists of a fixed shaft 11, a movable shaft 13, and a first spring 12. One end of the fixed shaft 11 is fixed to the base plate, and the other end is inserted into the movable shaft 13, which is connected to the lower plate 3 of the valve body 2. The two ends of the spring are fixed to the first mounting post 14 of the movable shaft 13 and the second mounting post 15 of the fixed shaft 11, respectively. By compressing the spring (moving the movable shaft 13 toward the fixed shaft 11) or extending it (moving the movable shaft 13 away from the fixed shaft 11), elastic push-pull force is provided to the valve body 2, realizing reciprocating motion without an external power source.

[0068] 2. Flow path structure and on / off control

[0069] The valve body 2 has a first flow path channel 7 (main channel) along the length direction inside the lower plate 3, and three second flow path channels 8 (branch channels) on each side are connected to the main channel, forming a symmetrically distributed six-way valve structure.

[0070] A one-way valve 10 is installed in the groove 9 at the opening of each second flow path channel 8. The one-way valve 10 is sealed to the channel through a fluororubber sealing ring 17 and independently controls the opening and closing of the corresponding branch channel.

[0071] 3. Implementation of flow path switching

[0072] When an external force (such as mechanical push-pull or system drive) is applied to the valve body 2, the valve body 2 slides along the T-shaped guide rail, causing the movable shaft 13 to move relative to the fixed shaft 11, compressing or stretching the spring.

[0073] The one-way valve 10 on valve body 2 is connected to the first channel 18 via a hose.

[0074] When the valve body 2 moves, the movement space at the front end of the valve body 2 is changed, making it easier to replace the vulnerable parts at the front end of the valve body 2.

[0075] By controlling the opening and closing of the one-way valve on the valve body 2, different second flow path channels 8 can be precisely switched to connect with the main channel, forming a flexible switching of "six-way" flow path (such as sample injection, cleaning, waste liquid discharge, etc.).

[0076] 4. Advantages of valve-free design

[0077] Abandoning the traditional valve core rotation structure, the flow path is independently controlled by the valve body 2 sliding as a whole and the check valve 10, avoiding valve core wear and seal damage. The check valve 10 only opens when the flow path needs to be connected, the liquid flows in one direction, there is no risk of backflow, and there is no valve core gap residue when the flow path is switched, reducing cross-contamination.

[0078] 5. Maintenance and Reliability Design

[0079] The cover plate 4 is fastened to the lower plate 3 by screws 16. After disassembly, the one-way valve 10 in the groove 9 can be directly replaced without disassembling the entire valve body 2 or the drive structure, simplifying the maintenance process.

[0080] The valve body 2 is integrally injection molded from corrosion-resistant plastics such as polytetrafluoroethylene. All flow path components in contact with liquids are highly corrosion-resistant, ensuring long-term stable operation in harsh environments such as heavy metal detection.

[0081] In summary, the device achieves multi-flow path switching with no power source, low wear, and high sealing performance through the core mechanism of elastically pushing and pulling to drive the valve body 2 to slide, thereby changing the position of the one-way valve 10 and controlling the opening and closing of the branch channel. This meets the high-precision flow path control requirements of scenarios such as water quality monitoring and biochemical detection.

[0082] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present utility model.

Claims

1. A flow path control device for a movable six-way valve, characterized in that, include: Fixed base plate, valve body, push-pull assembly; The valve body includes a lower plate and a cover plate disposed above it; The fixed base plate is provided with two T-shaped guide rails, and the lower side of the lower plate of the valve body is provided with two T-shaped slide grooves that match the shape of the T-shaped guide rails. The T-shaped guide rails are set in the T-shaped slide grooves, so that the valve body can be slidably installed on the fixed base plate. The lower plate of the valve body has a first flow path channel along its length. Three second flow path channels are respectively provided on both sides of the first flow path channel. Each second flow path channel has an opening with a groove, and each groove has a one-way valve. The one-way valve is connected to the second flow path channel, and each one-way valve independently controls the opening and closing of the corresponding second flow path channel. The cover plate is provided on the lower plate to cover the groove and the one-way valve in the groove, which facilitates replacement and maintenance. The six second flow paths and their corresponding one-way valves form a six-way valve structure. The centerlines of the first flow path and the six second flow paths are symmetrically distributed on the same horizontal plane. One end of the push-pull assembly is fixedly mounted on the fixed base plate and the other end is mounted on the valve body. It is used to push and pull the valve body to move back and forth on the fixed base plate, thereby changing the position of the valve body.

2. The apparatus according to claim 1, characterized in that, The push-pull assembly includes: a fixed shaft, a first spring, and a movable shaft; One end of the fixed shaft is fixed to the fixed base plate, and the other end is inserted into the movable shaft. The other end of the movable shaft is installed on the lower plate of the valve body. The first spring is installed inside the movable shaft. When the movable shaft moves away from the fixed shaft, the first spring is compressed, and when the movable shaft moves away from the fixed shaft, the first spring extends. The movable shaft has a first mounting post inside, and the fixed shaft has a second mounting post at one end inserted into the movable shaft. The two ends of the first spring are respectively mounted on the first mounting post and the second mounting post.

3. The apparatus according to claim 1, characterized in that, The edge of the cover plate of the valve body extends downward and fastens to the lower plate; The cover plate is fixed to the lower plate by screws. The screws are removed to remove the cover plate for replacing the one-way valve.

4. The apparatus according to claim 1, characterized in that, A fluororubber sealing ring is provided on the outer wall of the one-way valve at the connection between the one-way valve and the second flow path channel for sealing.

5. The apparatus according to claim 1, characterized in that, The fixed base plate is provided with six through holes running vertically through it. Each check valve has a first through hole at its front end, which is used to connect a pipe to the check valve.

6. The apparatus according to claim 1, characterized in that, The T-shaped guide rail is arranged along the length of the fixed base plate to form a sliding track, and the length of the sliding track is greater than the maximum displacement stroke of the valve body.

7. The apparatus according to claim 1, characterized in that, The valve body is manufactured using an integral injection molding process, and the valve body material is polytetrafluoroethylene or polyvinylidene fluoride corrosion-resistant plastic.

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