Electromagnetic valve structure

Abstract

The utility model provides a kind of solenoid valve structure, belong to solenoid valve technical field, including valve main body, connecting pipe group and switching execution component. First chamber and second chamber are sequentially communicated in valve main body inside;Connecting pipe group includes first pipeline, second pipeline and third pipeline, the side wall of second chamber is communicated to first pipeline, the side wall of first chamber is communicated to second pipeline, and one end of third pipeline is communicated to second chamber away from first chamber direction;Switching execution component includes electromagnetic drive part and stem, one end of stem is inserted into second chamber and is connected with plugging block, its end face has elastic part, and the other end of stem is provided with elastic member. The solenoid valve structure provided by the utility model, when power on, magnetic attraction stem overcomes elastic force to move and realize that first pipeline is communicated with third pipeline, when power off, elastic member pushes stem to move and realize that first pipeline is communicated with second pipeline. The solenoid valve can replace mechanical valve, ensure switching function, and assembly is simple and not easy to wear.

Description

Technical Field

[0001] This utility model belongs to the field of electromagnetic valve technology, and more specifically, relates to an electromagnetic valve structure. Background Technology

[0002] Environmentally friendly solid refrigerants have emerged as a new type of refrigeration technology. Refrigeration equipment made from solid shape memory alloys (CMAs) uses actuators to periodically apply and unload stress to the CMA, causing it to release heat (heating) and absorb heat (cooling). Therefore, to effectively utilize the heat and cold generated, pipes and fluids are typically installed in refrigeration and heating equipment. This allows the fluid (medium) to carry the heat or cold generated by the CMA to a heat exchanger, providing cooling or heating to the target external environment.

[0003] Currently, our designed spring-loaded refrigeration and heating equipment has two interfaces at each end: one inlet and one outlet. These four interfaces are the cold medium inlet and hot medium outlet at one end, and the hot medium inlet and cold medium outlet at the other end. Typically, two pipelines are installed at each end of the refrigeration and heating equipment, connecting to these four interfaces respectively. When the shape memory alloy heats up, the outlet at the first end discharges the heated medium, and the inlet at the second end introduces the medium. When the shape memory alloy cools down, the medium temperature decreases, the outlet at the second end discharges the cooled medium, and the inlet at the first end introduces the medium, and so on in a continuous cycle. In existing medium discharge schemes, we use mechanical valves in conjunction with multiple refrigeration and heating components (i.e., refrigeration and heating equipment) and switching pipelines. The switching pipelines utilize interlocking valves to alternately connect different interfaces on multiple refrigeration and heating components, ensuring a continuous and stable output of both heating and cooling media.

[0004] However, existing mechanical valves are mechanically linked to the cooling and heating components. The switching of the mechanical valve is controlled by the stroke of the cooling and heating components; that is, the mechanical valve can only be triggered to switch when the cooling and heating components reach a certain displacement. But in practical applications, when a cooling or heating component fails, the mechanical valve may fail to perform its switching function. In addition, because the mechanical valve is linked to the cooling and heating components, it has many parts, resulting in low assembly efficiency and easy wear. Utility Model Content

[0005] The purpose of this utility model is to provide a solenoid valve structure that solves the problem that mechanical valves cannot perform switching functions when the refrigeration and heating components fail; moreover, mechanical valves have low assembly efficiency due to the large number of parts and are prone to wear.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a solenoid valve structure, comprising: The valve body has a first chamber and a second chamber connected in sequence inside; The connecting pipe assembly includes a first pipe, a second pipe, and a third pipe. The first pipe is connected to the side wall of the second chamber, the second pipe is connected to the side wall of the first chamber, and the third pipe is connected to the end of the second chamber away from the first chamber. The switching execution component includes an electromagnetic drive unit disposed outside the valve body and a rod disposed inside the first chamber. The rod forms a first venting gap in its circumference. One end of the rod passes through the second chamber and is connected to a sealing block. The sealing block has an elastic portion extending away from the first chamber. The sealing block forms a second venting gap in its circumference. The other end of the rod is provided with an elastic element that abuts against the first chamber, wherein the elastic portion is embedded in the sealing block. The electromagnetic drive component generates magnetism when energized, overcoming the elastic force of the elastic element and magnetically attracting the rod to move. The rod drives the sealing block to rigidly seal the end of the first chamber near the second chamber, thereby connecting the first pipeline to the third pipeline; or When the electromagnetic drive is de-energized, it loses its magnetism, and the elastic element pushes the rod body to move with the help of elastic force. The rod body causes the elastic part of the sealing block to be squeezed and deformed, and flexibly seals the end of the second chamber away from the first chamber, so that the first pipeline is connected to the second pipeline.

[0007] In one possible implementation, the end face of the sealing block away from the first chamber has an annular groove, and an elastic sleeve is embedded in the annular groove. The portion of the elastic sleeve that protrudes axially from the end face of the sealing block forms the elastic part.

[0008] In one possible implementation, the valve body includes: A first valve body, the first chamber is located inside the first valve body, a second pipeline is disposed in the first valve body, and the electromagnetic drive component is disposed outside the first valve body; The second valve body is sealed to the first valve body, the second chamber is located inside the second valve body, and the first pipeline and the third pipeline are respectively disposed in the second valve body.

[0009] In one possible implementation, the side wall of the first chamber is provided with a second channel for connecting the second pipeline; The second chamber has a first channel on its side wall for connecting to the first pipeline; The second chamber has an extension cavity in the direction away from the first chamber, and the side wall of the extension cavity has a third channel that connects to the third pipeline.

[0010] In one possible implementation, the first pipeline, the third pipeline, and the second pipeline are arranged sequentially at intervals along the circumference of the valve body.

[0011] In one possible implementation, the first chamber includes: A first main chamber, a second chamber connected to the first main chamber, the rod penetrating the first main chamber, and the second pipe path communicating with the side wall of the first main chamber; The first auxiliary chamber is coaxially connected to the end of the first main chamber away from the second chamber, and the elastic element is located in the first auxiliary chamber and abuts against its interior.

[0012] In one possible implementation, a partition is provided at the end of the first chamber away from the second chamber, and the elastic member abuts against the partition.

[0013] In one possible implementation, the elastic element is a spring, and one end of the rod is provided with an adapter groove for placing the spring, the spring extending to the outside of the adapter groove.

[0014] In one possible implementation, the electromagnetic drive includes: A first mounting body is detachably connected to the outside of the valve body, and the first mounting body has a first receiving cavity. An electromagnet is disposed in the first accommodating cavity. When the electromagnet is energized, it forms a magnetic attraction force that attracts the rod.

[0015] In one possible implementation, the electromagnetic drive includes: The second mounting body is detachably connected to the outside of the valve body. The first chamber extends into the interior of the second mounting body. The second mounting body has a second receiving cavity surrounding the circumference of the first chamber. An electromagnetic coil is disposed in the second accommodating cavity. When the electromagnetic coil is energized, it forms a magnetic attraction force along the axial direction of the first cavity to magnetically attract the rod.

[0016] The beneficial effects of the solenoid valve structure provided by this utility model are as follows: Compared with the prior art, this solenoid valve uses electromagnetic drive combined with elastic element reset control logic, and the switching is determined solely by the energization / de-energization of the electromagnetic drive element. When energized, the magnetic rod moves against the elastic force to connect the first and third pipelines; when de-energized, the elastic element pushes the rod to connect the first and second pipelines. The entire process does not rely on component travel signals. Even if a component fails, as long as the electromagnetic drive element receives the electrical signal normally, the switching can be completed independently, avoiding the problem of mechanical valve switching failure due to malfunction of the cooling or heating components.

[0017] Furthermore, mechanical valves require numerous linkage components such as rods and cams, and precise calibration of displacement matching relationships, resulting in bulk redundancy and inefficient assembly. In contrast, this solenoid valve employs an integrated chamber combined with a simple transmission structure, comprising only the valve body (integrating the first and second chambers), connecting pipe assemblies (with first, second, and third pipes connecting the first and second chambers), and switching actuation components (electromagnetic drive, rod, sealing block, and elastic element). This reduces the number of components, eliminates the need for external component stroke calibration during assembly, and allows the connecting pipe assemblies to be directly connected to the chambers, while the switching actuation components are directly assembled into the valve body, thus improving assembly efficiency.

[0018] Furthermore, the collision between the elastic part and the rigid part in the sealing block can easily cause the elastic part to fail, resulting in poor sealing performance. Therefore, embedding the elastic part into the sealing block and adopting an embedded and wrapped structure can reduce stress concentration in the elastic part during the collision process, avoid the expansion of the flexible plug material, and thus improve the life of the solenoid valve.

[0019] Meanwhile, mechanical valves are prone to wear on transmission parts due to physical contact. In contrast, this solenoid valve uses a non-contact electromagnetic drive, where the rod movement relies on magnetic attraction and elasticity without mechanical actuation, thus avoiding the wear problems associated with mechanical contact. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A perspective view of the solenoid valve based on solid-state spring-loaded refrigeration provided for the first embodiment of this utility model; Figure 2 A front view of a solenoid valve based on solid-state spring-loaded refrigeration provided in the first embodiment of this utility model; Figure 3 for Figure 2 Sectional view along the middle AA; Figure 4 A side view of the solenoid valve based on solid-state spring-loaded refrigeration provided in the first embodiment of this utility model; Figure 5 for Figure 4 A sectional view along the middle edge BB; Figure 6 A perspective view of the first valve body provided by this utility model; Figure 7 A perspective view of the second valve body provided by this utility model; Figure 8A perspective view of a solenoid valve based on solid-state spring-loaded refrigeration provided for the second embodiment of this utility model; Figure 9 A front view of a solenoid valve based on solid-state spring-loaded refrigeration provided for the second embodiment of this utility model; Figure 10 for Figure 9 A sectional view along the center CC; Figure 11 A side view of a solenoid valve based on solid-state spring-loaded refrigeration provided for the second embodiment of this utility model; Figure 12 for Figure 11 A sectional view along the middle DD.

[0022] In the diagram: 1. First valve body; 101. Annular insertion platform; 102. First convex ring; 103. Guide block; 2. Second valve body; 201. Annular insertion groove; 3. First pipeline; 4. Second pipeline; 5. Third pipeline; 6. First chamber; 601. First main chamber; 602. First auxiliary chamber; 7. Second chamber; 8. First channel; 9. Second channel; 10. Extension cavity; 11. Third channel; 12. Rod; 14. Sealing block; 15. Elastic sleeve; 16. Spring; 17. Adaptor groove; 18. Partition; 20. Electromagnetic drive component; 2001. First mounting body; 2002. First accommodating cavity; 2003. Electromagnet; 2004. Second mounting body; 2005. Second accommodating cavity; 2006. Electromagnetic coil. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0025] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is 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, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0026] Please see Figure 1 and Figure 12 The present invention will now describe the solenoid valve based on solid-state spring-loaded refrigeration. The solenoid valve based on solid-state spring-loaded refrigeration includes a valve body, a connecting pipe assembly, and a switching actuation component.

[0027] The valve body is internally connected to a first chamber 6 and a second chamber 7 in sequence; the connecting pipe assembly includes a first pipe 3, a second pipe 4 and a third pipe 5, the first pipe 3 is connected to the side wall of the second chamber 7, the second pipe 4 is connected to the side wall of the first chamber 6, and the third pipe 5 is connected to the end of the second chamber 7 away from the first chamber 6; the switching execution component includes an electromagnetic drive 20 disposed outside the valve body and a rod 12 disposed inside the first chamber 6, the rod 12 forms a first venting gap in the circumference, one end of the rod 12 passes through the second chamber 7 and is connected to a sealing block 14, the sealing block 14 has an elastic part extending away from the first chamber 6, the sealing block 14 forms a second venting gap in the circumference, and the other end of the rod 12 is provided with an elastic part that abuts against the first chamber 6, wherein the elastic part is embedded in the sealing block 14.

[0028] When the electromagnetic drive component 20 is energized, it generates magnetism, overcomes the elastic force of the elastic component, and magnetically attracts the rod 12 to move. The rod 12 drives the sealing block 14 to rigidly seal the end of the first chamber 6 near the second chamber 7, so that the first pipeline 3 is connected to the third pipeline 5. When the electromagnetic drive component 20 is de-energized, it loses its magnetism, and the elastic component pushes the rod 12 to move with the help of its elastic force. The rod 12 drives the elastic part of the sealing block 14 to be squeezed and deformed and flexibly seal the end of the second chamber 7 away from the first chamber 6, so that the first pipeline 3 is connected to the second pipeline 4.

[0029] The solenoid valve based on solid-state spring-loaded refrigeration provided by this utility model, compared with the prior art, uses electromagnetic drive combined with elastic element reset control logic. Switching is determined solely by the energization / de-energization of the electromagnetic drive element 20. When energized, the magnetic rod 12 moves against the elastic force to connect the first pipe 3 and the third pipe 5. When de-energized, the elastic element pushes the rod 12 to connect the first pipe 3 and the second pipe 4. The entire process does not rely on component travel signals. Even if a component fails, as long as the electromagnetic drive element 20 receives the electrical signal normally, the switching can be completed independently, avoiding the problem of mechanical valve switching failure due to malfunction of the refrigeration or heating components.

[0030] Furthermore, mechanical valves require numerous linkage components such as rods and cams, and precise calibration of displacement matching relationships, resulting in bulk redundancy and inefficient assembly. In contrast, this solenoid valve employs an integrated chamber combined with a simple transmission structure, comprising only the valve body (integrating the first chamber 6 and the second chamber 7), connecting pipe assemblies (with a first pipe 3, a second pipe 4, and a third pipe 5 connecting the first chamber 6 and the second chamber 7), and switching actuation components (electromagnetic drive 20, rod 12, sealing block 14, and elastic element). This reduces the number of components, eliminates the need for external component stroke calibration during assembly, and allows the connecting pipe assemblies to be directly connected to the chambers, while the switching actuation components are directly assembled into the valve body, thus improving assembly efficiency.

[0031] Furthermore, the collision between the elastic part in the sealing block 14 and the rigid part can easily cause the elastic part to fail, resulting in poor sealing performance. Therefore, embedding the elastic part into the sealing block 14 and adopting an embedded and wrapped structure can reduce stress concentration in the elastic part during the collision process, avoid the expansion of the flexible plug material, and thus improve the life of the solenoid valve.

[0032] Meanwhile, mechanical valves are prone to wear on transmission parts due to physical contact transmission. In contrast, this solenoid valve uses a non-contact electromagnetic drive, with the movement of the rod 12 relying on magnetic attraction and elasticity without mechanical actuation, thus avoiding the wear problems associated with mechanical contact.

[0033] Please see Figure 6 and Figure 7 The valve body includes a first valve body 1 and a second valve body 2. The first valve body 1 has an annular insertion platform 101, and the second valve body 2 has an annular insertion groove 201. Both the first valve body 1 and the second valve body 2 are rectangular blocks, with axially connected holes at their four corners. During installation, the annular insertion platform 101 and the annular insertion groove 201 are disassembled and assembled to form an axial limit, ensuring that the connecting holes on the first valve body 1 and the second valve body 2 are coaxially aligned for connection by bolts. Mounting plates are integrally formed on both sides of the first valve body 1 and the second valve body 2. Mounting holes are spaced apart along the length of the mounting plates. After installation, the mounting plates of the first valve body 1 and the second valve body 2 correspond one-to-one to secure the valve body.

[0034] The first chamber 6 is located inside the first valve body 1, the second pipeline 4 is disposed in the first valve body 1, and the electromagnetic drive component 20 is disposed at the end of the first valve body 1 away from the second valve body 2; the second chamber 7 is located inside the second valve body 2, and the first pipeline 3 and the third pipeline 5 are respectively disposed in the second valve body 2. After the first valve body 1 and the second valve body 2 are installed, the first chamber 6 and the second chamber 7 are axially sealed and connected.

[0035] In addition, the end face of the first valve body 1 has a first convex ring 102, and a plurality of guide blocks 103 are circumferentially spaced on the end face of the first valve body 1. The plurality of guide blocks 103 are located inside the first convex ring 102, and the inner surface of the guide block 103 forms a guide slope to guide the sealing block 14 to move axially to fit the first convex ring 102 to form a seal on the first chamber 6. The first chamber 6 and the second chamber 7 are in a disconnected state, that is, the first pipeline 3 and the second pipeline 4 are in a non-connected state.

[0036] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12 The first chamber 6 has a second channel 9 on its side wall for connecting to the second pipe 4; the second chamber 7 has a first channel 8 on its side wall for connecting to the first pipe 3; an extension cavity 10 is formed in the direction away from the first chamber 6 in the second chamber 7, and a third channel 11 is formed on the side wall of the extension cavity 10 for connecting to the third pipe 5. One end of each of the three channels is provided with a threaded section for connecting to the corresponding pipe, allowing for quick assembly and disassembly.

[0037] In addition, the end of the extension cavity 10 that connects to the second chamber 7 has a second protruding ring. The second protruding ring extends toward the first chamber 6, and the sealing block 14 moves toward the extension cavity 10 to fit the first protruding ring 102 to form a seal on the extension cavity 10, that is, the first pipeline 3 and the third pipeline 5 are in a non-connected state.

[0038] Please see Figure 1 and Figure 8 The first pipe 3, the third pipe 5, and the second pipe 4 are arranged sequentially and at intervals along the circumference of the valve body. The axial angle between adjacent pipes is 90°, so that the three pipes are evenly distributed and neatly arranged around the valve body, avoiding the pipes from getting tangled or crowded, and making efficient use of the space around the valve body. This is especially suitable for installation scenarios where the structure is compact.

[0039] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12 The first chamber 6 includes a first main chamber 601 and a first auxiliary chamber 602. A second chamber 7 is connected to the first main chamber 601, a rod 12 penetrates the first main chamber 601, and a second conduit 4 radially connects to the side wall of the first main chamber 601. The first auxiliary chamber 602 is coaxially connected to the end of the first main chamber 601 furthest from the second chamber 7, and an elastic element is located in the first auxiliary chamber 602 and abuts against its interior. The inner diameter of the first auxiliary chamber 602 is larger than the inner diameter of the first main chamber 601, and the diameter of the portion of the upper end of the rod 12 penetrating into the first auxiliary chamber 602 is larger than the inner diameter of the first main chamber 601.

[0040] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12 A partition 18 is provided at the end of the first chamber 6 away from the second chamber 7, and the elastic element abuts against the partition 18. The partition 18 can be made of polytetrafluoroethylene or nylon, which provides a stable upper support point for the elastic element, preventing the elastic element from shifting or tilting during repeated expansion and contraction, ensuring that the elastic element always transmits elastic force along the axis of the rod 12, thereby ensuring the linearity of the movement of the rod 12 and the sealing accuracy of the sealing block 14, and reducing valve switching failures caused by misalignment of the elastic element.

[0041] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12 The elastic element is a spring 16. One end of the rod 12 is provided with an adapter groove 17 for placing the spring 16, and the spring 16 extends to the outside of the adapter groove 17. The adapter groove 17 can provide radial limiting space for the spring 16, preventing the spring 16 from shifting or tilting during the repeated extension and retraction process of the rod 12, ensuring that the spring 16 always maintains a stable posture along the axis of the rod 12, and preventing deviation in elastic force transmission caused by misalignment of the spring 16.

[0042] Meanwhile, the structure of one end of the spring 16 being placed in the adapter groove 17 and the other end extending out of the groove to abut against the partition layer 18 makes the force points at both ends of the spring 16 coaxially correspond, which can evenly transmit the elastic force to the rod 12, pushing the rod 12 to smoothly complete the reciprocating movement, thereby ensuring that the sealing block 14 can accurately fit the first chamber 6 or the second chamber 7 to achieve sealing, effectively improving the reliability and sealing performance of the solenoid valve switching.

[0043] In addition, the presence of the adapter slot 17 provides a clear positioning guide for the assembly of the spring 16. During assembly, there is no need to repeatedly adjust the position of the spring 16. The initial positioning can be completed simply by placing the spring 16 directly into the adapter slot 17, which simplifies the assembly process, reduces the difficulty of installation, and helps to improve the overall assembly efficiency of the solenoid valve.

[0044] Please see Figure 3 , Figure 5 , Figure 10 as well as Figure 12 The sealing block 14 has an annular groove on its end face away from the first chamber 6, and an elastic sleeve 15 is embedded in the annular groove. The portion of the elastic sleeve 15 that protrudes axially from the end face of the sealing block 14 forms an elastic part. When the sealing block 14 seals the end of the second chamber 7 away from the first chamber 6, the protruding portion of the elastic sleeve 15 is first squeezed and deformed, and then sealed at the end of the second chamber 7 away from the first chamber 6 to form a sealing structure, which can reduce stress concentration of the sealing block 14.

[0045] In addition, this combination structure of elastic sleeve 15 and sealing block 14 can avoid the problem of poor sealing when the sealing block 14 is made of rigid material; it can also avoid the problem of excessive deformation of flexible material and reduced service life when the sealing block 14 is made of flexible material.

[0046] Specifically, the elastic properties of the outer layer of the elastic sleeve 15 can adapt to minute dimensional deviations at the ports of the second chamber 7, forming dynamic sealing compensation and effectively avoiding problems such as inadequate sealing of the rigid sealing block 14 or uncontrolled deformation of the flexible sealing block 14. The sealing block 14 bears the main sealing pressure, while the elastic sleeve 15 only undergoes compressive deformation within a controllable range, avoiding damage to a single material due to long-term fatigue or excessive deformation, and extending the service life of the overall component. In addition, the elastic sleeve 15 adopts a modular design, so when wear or aging occurs, it is not necessary to replace the entire sealing block 14; only the elastic sleeve 15 needs to be replaced, reducing spare parts consumption and lowering costs.

[0047] In the first embodiment, please refer to Figures 1 to 5 The electromagnetic drive component 20 includes a first mounting body 2001 and an electromagnet 2003. The first mounting body 2001 is detachably connected to the outside of the valve body and has a first accommodating cavity 2002 inside. The electromagnet 2003 is disposed in the first accommodating cavity 2002, and when energized, the electromagnet 2003 forms a magnetic attraction force on the magnetic rod body 12. The first accommodating cavity 2002 provides an independent and stable mounting space for the electromagnet 2003, effectively isolating it from external dust, moisture, and potential corrosion from the internal medium of the valve body, preventing performance degradation or malfunction of the electromagnet 2003 due to external environmental influences, and ensuring its long-term stable operation.

[0048] Specifically, the first mounting body 2001 is a split structure, which includes a first connecting body and a first end cap. The first connecting body is integrally formed with a first connecting sleeve. The first connecting sleeve is threadedly assembled with the valve body and sealed by a sealing ring, together forming the first secondary chamber 602 of the first chamber 6. The first end cap is threadedly assembled on the first connecting body, together forming the first accommodating cavity 2002.

[0049] In the second embodiment, please refer to Figures 8 to 12The electromagnetic drive component 20 includes a second mounting body 2004 and an electromagnetic coil 2006. The second mounting body 2004 is detachably connected to the outside of the valve body. The first chamber 6 extends into the interior of the second mounting body 2004, which has a second receiving cavity 2005 surrounding the first chamber 6. The electromagnetic coil 2006 is disposed within the second receiving cavity 2005. When energized, the electromagnetic coil 2006 forms a magnetic attraction force along the axial direction of the first chamber 6 to the rod 12. The layout of the second receiving cavity 2005 allows the electromagnetic coil 2006 to be distributed around the first chamber 6 where the rod 12 is located. When energized, it can form a uniform magnetic attraction force along the axial direction of the first chamber 6. Compared with a non-circular layout, this reduces magnetic energy loss and ensures a more stable and concentrated magnetic attraction force, which is sufficient to overcome the elastic force of the elastic element to smoothly move the rod 12 upward, ensuring the accuracy and response speed of the solenoid valve switching action.

[0050] Specifically, the second mounting body 2004 is a split structure, comprising a second connecting body, an outer sleeve, and a second end cap. The second connecting body is integrally formed with a second connecting sleeve, which is threadedly assembled with the valve body and sealed by a sealing ring. A groove is formed inside the second connecting sleeve, which together form the first secondary chamber 602 of the first chamber 6. One end of the rod 12 extends into this groove. The outer sleeve is fitted around the outer periphery of the second connecting body, and a second accommodating cavity 2005 is formed inside the outer sleeve. The second end cap is threadedly assembled at the end of the second connecting body away from the valve body, thereby preventing the outer sleeve from detaching from the second connecting body.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solenoid valve structure, characterized in that, include: The valve body has a first chamber (6) and a second chamber (7) connected in sequence inside; The connecting pipe assembly includes a first pipe (3), a second pipe (4) and a third pipe (5). The first pipe (3) is connected to the side wall of the second chamber (7), the second pipe (4) is connected to the side wall of the first chamber (6), and the third pipe (5) is connected to the end of the second chamber (7) away from the first chamber (6). The switching execution component includes an electromagnetic drive (20) disposed outside the valve body and a rod (12) disposed in the first chamber (6). The rod (12) forms a first venting gap in the circumference. One end of the rod (12) passes through the second chamber (7) and is connected to a sealing block (14). The sealing block (14) has an elastic part extending away from the first chamber (6). The sealing block (14) forms a second venting gap in the circumference. The other end of the rod (12) is provided with an elastic part that abuts against the first chamber (6). The elastic part is embedded in the sealing block (14). The electromagnetic drive (20) generates magnetism when energized, overcoming the elastic force of the elastic element and magnetically attracting the rod (12) to move. The rod (12) drives the sealing block (14) to rigidly seal the end of the first chamber (6) near the second chamber (7), so that the first pipeline (3) is connected to the third pipeline (5); or When the electromagnetic drive (20) is de-energized, it loses its magnetism. The elastic element pushes the rod (12) to move with the help of the elastic force. The rod (12) causes the elastic part of the sealing block (14) to be squeezed and deformed and flexibly sealed at the end of the second chamber (7) away from the first chamber (6), so that the first pipeline (3) is connected to the second pipeline (4).

2. The solenoid valve structure as described in claim 1, characterized in that, The sealing block (14) has an annular groove on its end face away from the first chamber (6), and an elastic sleeve (15) is embedded in the annular groove. The portion of the elastic sleeve (15) that protrudes axially from the end face of the sealing block (14) forms the elastic part.

3. The solenoid valve structure as described in claim 1, characterized in that, The valve body includes: The first valve body (1) has a first chamber (6) located inside the first valve body (1), a second pipeline (4) is disposed in the first valve body (1), and the electromagnetic drive (20) is disposed outside the first valve body (1). The second valve body (2) is sealed to the first valve body (1), the second chamber (7) is located inside the second valve body (2), and the first pipeline (3) and the third pipeline (5) are respectively disposed in the second valve body (2).

4. The solenoid valve structure as described in claim 1, characterized in that, The side wall of the first chamber (6) is provided with a second channel (9) for connecting the second pipeline (4); The second chamber (7) has a first channel (8) on its side wall that connects to the first pipeline (3); The second chamber (7) has an extension cavity (10) in the direction away from the first chamber (6), and the side wall of the extension cavity (10) has a third channel (11) that connects to the third pipeline (5).

5. The solenoid valve structure as described in claim 4, characterized in that, The first pipeline (3), the third pipeline (5) and the second pipeline (4) are arranged sequentially at intervals along the circumference of the valve body.

6. The solenoid valve structure as described in claim 1, characterized in that, The first chamber (6) includes: The first main chamber (601) is connected to the second chamber (7), the rod (12) passes through the first main chamber (601), and the second pipe (4) is radially connected to the side wall of the first main chamber (601). The first auxiliary chamber (602) is coaxially connected to the end of the first main chamber (601) away from the second chamber (7), and the elastic element is located in the first auxiliary chamber (602) and abuts against its interior.

7. The solenoid valve structure as described in claim 1, characterized in that, A partition (18) is provided at the end of the first chamber (6) away from the second chamber (7), and the elastic member abuts against the partition (18).

8. The solenoid valve structure as described in claim 1, characterized in that, The elastic element is a spring (16), and one end of the rod (12) is provided with an adapter groove (17) for placing the spring (16), and the spring (16) extends to the outside of the adapter groove (17).

9. A solenoid valve structure as described in any one of claims 1-8, characterized in that, The electromagnetic drive unit (20) includes: A first mounting body (2001) is detachably connected to the outside of the valve body, and the first mounting body (2001) has a first receiving cavity (2002); An electromagnet (2003) is disposed in the first accommodating cavity (2002). When the electromagnet (2003) is energized, it forms a magnetic attraction force that magnetically attracts the rod (12).

10. A solenoid valve structure as described in any one of claims 1-8, characterized in that, The electromagnetic drive unit (20) includes: The second mounting body (2004) is detachably connected to the outside of the valve body. The first chamber (6) extends into the interior of the second mounting body (2004). The second mounting body (2004) has a second receiving cavity (2005) which surrounds the circumference of the first chamber (6). An electromagnetic coil (2006) is disposed in the second accommodating cavity (2005). When the electromagnetic coil (2006) is energized, it forms a magnetic attraction force that magnetically attracts the rod (12) along the axial direction of the first cavity (6).

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