An electromagnetic valve

Abstract

The application relates to an electromagnetic valve, which comprises a valve shell, a lower sealing plate assembled at the bottom of the valve shell, a guide sleeve, an upper coil and a magnet arranged in the valve shell, the upper coil and the magnet are sleeved on the circumferential outer side of the guide sleeve, the magnet divides the assembly space of the valve shell into an upper cavity and a lower cavity arranged in the vertical direction, the upper coil is arranged in one of the upper cavity and the lower cavity; the guide sleeve is fixed with an upper iron core and a lower iron core, the upper iron core and the lower iron core are arranged in the vertical direction in a top-down mode, the guide sleeve is provided with a valve core moving in the vertical direction, the valve core is provided with a transmission rod; the lower iron core extends to the outside through the lower sealing plate, the transmission rod extends to the outside through the lower iron core; sealing rings are arranged between the upper iron core and the valve shell and between the lower iron core and the lower sealing plate. The electromagnetic valve can combine the air tightness of the inner valve core with the small volume and low power consumption of the outer valve core, so as to meet the requirements of different application scenes, promote the development of related industries and the upgrading of products.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of regulating valves, in particular to an electromagnetic valve. BACKGROUND

[0002] In the field of gas and water valve products, electromagnetic valves are widely used as key components, which realize various functions through the conversion of two different states of opening and closing. At present, the electromagnetic valves on the market are mainly divided into two types: inner valve core and outer valve core.

[0003] The valve core of the inner valve core type electromagnetic valve is built-in the electromagnetic valve, and the moving valve core cannot be seen from the appearance. Its advantage is good air tightness, which can be applied to gas or water products. However, the inner valve core type electromagnetic valve has many disadvantages, such as the need for continuous power supply of the coil when changing the state, which leads to high power consumption, high heat generation, easy burning and difficult long-term use. At the same time, its volume is large, the cost is high, and it cannot be applied to small products.

[0004] The valve core of the outer valve core type electromagnetic valve protrudes outside the electromagnetic valve, and the moving valve core can be seen from the appearance. Its advantage is small size and low power consumption when changing state. However, the outer valve core type electromagnetic valve cannot achieve air tightness and cannot be used in products that require air tightness, such as gas and water products.

[0005] The existing two types of electromagnetic valve structures have their own advantages and disadvantages, and it is difficult to meet the needs of small size, low cost, good sealing, low power consumption and long-term stable use. In the field of gas appliances and other high air tightness requirements, as well as various high-end intelligent control products, there is an urgent need for a new type of electromagnetic valve that combines the air tightness advantages of the inner valve core type and the small size and low power consumption advantages of the outer valve core type to meet the needs of different application scenarios and promote the development of related industries and product upgrading. SUMMARY

[0006] In order to overcome at least one of the defects of the prior art described above, according to one aspect of the present application, an electromagnetic valve is provided, comprising a valve shell and a lower sealing plate assembled at the bottom of the valve shell, a guide sleeve, an upper coil and a magnet are arranged in the valve shell, the upper coil and the magnet are sleeved on the outer side of the guide sleeve in the circumferential direction, the magnet divides the assembly space of the valve shell into an upper cavity and a lower cavity arranged in the vertical direction, and the upper coil is arranged in one of the upper cavity and the lower cavity;

[0007] The upper iron core and the lower iron core are fixed in the guide sleeve, the upper iron core and the lower iron core are arranged in the vertical direction, a valve core moving in the vertical direction is arranged in the guide sleeve, and the valve core is provided with a transmission rod; the lower iron core extends to the outside through the lower sealing plate, and the transmission rod extends to the outside through the lower iron core;

[0008] A sealing ring is arranged between the upper iron core and the valve housing and between the lower iron core and the lower sealing plate.

[0009] In an embodiment of the present application, the valve housing comprises a horizontal top section and vertical side sections arranged at the bottom of both ends of the horizontal top section, and the horizontal top section and the pair of vertical side sections surround a fitting space arranged through in a horizontal direction.

[0010] In an embodiment of the present application, the upper iron core is provided with a limiting pad towards the bottom of the valve core.

[0011] In an embodiment of the present application, a lower coil is further included, the lower coil is sleeved on the outer side of the guide sleeve in the circumferential direction, and the upper coil, the magnet and the lower coil are sequentially arranged in a vertical direction from top to bottom.

[0012] The upper coil is arranged in the upper cavity, and the lower coil is arranged in the lower cavity.

[0013] In an embodiment of the present application, a magnetic force sensor is further included, and the magnetic force sensor is arranged on the mounting and fixing support.

[0014] The upper coil is arranged in one of the upper cavity and the lower cavity, and the mounting and fixing support is detachably inserted into the other of the upper cavity and the lower cavity.

[0015] The electromagnetic valve further comprises a prompt unit, the prompt unit is in communication connection with the magnetic force sensor, the magnetic force sensor is used for sensing the change of magnetic force to judge whether the electromagnetic valve is actuated to the position, when the electromagnetic valve is actuated to the position, the magnetic force sensor feeds back a signal to the prompt unit, and the prompt unit prompts.

[0016] In an embodiment of the present application, the upper coil, the magnet and the magnetic force sensor are sequentially arranged in a vertical direction from top to bottom, the upper coil is arranged in the upper cavity, and the mounting and fixing support is arranged in the lower cavity.

[0017] In an embodiment of the present application, the vertical side section of the valve housing has a clamping groove, and the mounting and fixing support is provided with a clasp, when the mounting and fixing support is inserted into the valve housing, the clasp is used for clamping in the clamping groove.

[0018] In an embodiment of the present application, the mounting and fixing support comprises a support main section and a pair of clasp side sections arranged on the support main section.

[0019] The pair of clasp side sections are arranged on the same side of the support main section and arranged inwardly, so as to leave abutting sections arranged outwardly at both ends of the support main section.

[0020] The clamping blocks of the pair of clasp side sections are arranged oppositely.

[0021] The valve housing has a pair of vertical side sections, each of which is recessed with a clamping groove along both sides of the through direction of the assembly space, and the two clamping grooves are a first clamping groove and a second clamping groove;

[0022] When the mounting and fixing support is inserted into the valve housing, the clamping block of one of the clamping side sections is clamped in the first clamping groove of one of the vertical side sections, and the abutting section is clamped in the second clamping groove of the same vertical side section.

[0023] In an embodiment of the present application, a power supply unit is further included, which is electrically connected with the magnetic force sensor and used for supplying power to the magnetic force sensor with a voltage of 3V.

[0024] In an embodiment of the present application, the valve core, the upper iron core and the lower iron core are made of the same material.

[0025] In summary, the electromagnetic valve provided by the present application has the following technical effects:

[0026] The electromagnetic valve of the present application can combine the air tightness of the inner valve core with the small size and low power consumption of the outer valve core, so as to meet the needs of different application scenarios, promote the development of related industries and upgrade the products. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 1 is a structural schematic diagram of the electromagnetic valve of an embodiment of the present application;

[0028] Figure 2 FIG. 2 is a front view of the electromagnetic valve of an embodiment of the present application;

[0029] Figure 3 FIG. 3 is a sectional view of the internal structure of the electromagnetic valve of an embodiment of the present application;

[0030] Figure 4 FIG. 4 is another structural schematic diagram of the electromagnetic valve of an embodiment of the present application;

[0031] Figure 5 FIG. 5 is another structural schematic diagram of the electromagnetic valve of an embodiment of the present application;

[0032] Figure 6 FIG. 6 is a front view of the electromagnetic valve of another embodiment of the present application;

[0033] Figure 7 FIG. 7 is a sectional view of the internal structure of the electromagnetic valve of another embodiment of the present application;

[0034] Figure 8 FIG. 8 is a front view of another structure of the electromagnetic valve of another embodiment of the present application;

[0035] Figure 9 FIG. 9 is a structural schematic diagram of the electromagnetic valve of another embodiment of the present application;

[0036] Figure 10 A front view of the electromagnetic valve according to another embodiment of the present application;

[0037] Figure 11 A sectional view of the internal structure of the electromagnetic valve according to another embodiment of the present application;

[0038] Figure 12 A front view of another structure of the electromagnetic valve according to another embodiment of the present application;

[0039] Figure 13 A schematic view of the structure of the mounting and fixing bracket of the electromagnetic valve according to another embodiment of the present application;

[0040] Figure 14 A schematic view of the structure of the valve housing of the electromagnetic valve according to another embodiment of the present application;

[0041] Figure 15 A schematic view of the structure of the electromagnetic valve assembled in the external device according to another embodiment of the present application;

[0042] Figure 16 A sectional view of the internal structure of the electromagnetic valve assembled in the external device according to another embodiment of the present application;

[0043] FIG. 1 is a valve housing, 11 is an upper cavity, 12 is a lower cavity, 13 is a transverse top section, 14 is a vertical side section, 141 is a first clamping groove, 142 is a second clamping groove, 2 is a lower sealing plate, 3 is a guide sleeve, 31 is an upper iron core, 32 is a lower iron core, 33 is a limiting pad, 4 is an upper coil, 5 is a magnet, 6 is a valve core, 61 is a transmission rod, 7 is a sealing ring, 8 is a lower coil, 9 is a mounting and fixing bracket, 91 is a bracket main body section, 911 is an abutting section, 92 is a clasp side section, 921 is a clamping block, 10 is a magnetic force sensor, 20 is a manual operation connecting rod, 30 is a manual operation button, 40 is a spring, and 50 is an external device. DETAILED DESCRIPTION

[0044] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0047] In view of the advantages and disadvantages of the two types of electromagnetic valve structures, it is difficult to meet the requirements of small size, low cost, good sealing, low power consumption and long-term stable use. Therefore, the embodiments of the present application disclose an electromagnetic valve which combines the advantages of the inner valve core type electromagnetic valve and the outer valve core type electromagnetic valve to better meet the needs of users.

[0048] Embodiment one: single holding type electromagnetic valve

[0049] The following will be described in combination with Figures 1-5 The electromagnetic valve of the present application is described.

[0050] Specifically, an electromagnetic valve comprises a valve housing 1 and a lower sealing plate 2 assembled at the bottom of the valve housing 1, a guide sleeve 3, an upper coil 4 and a magnet 5 are arranged in the valve housing 1, the upper coil 4 and the magnet 5 are sleeved on the circumferential outer side of the guide sleeve 3, the magnet 5 divides the assembly space of the valve housing 1 into an upper cavity 11 and a lower cavity 12 arranged in the vertical direction, and the upper coil 4 is arranged in one of the upper cavity 11 and the lower cavity 12; the guide sleeve 3 is fixed with an upper iron core 31 and a lower iron core 32, the upper iron core 31 and the lower iron core 32 are arranged in the vertical direction, the guide sleeve 3 is provided with a valve core 6 moving in the vertical direction, and the valve core 6 is provided with a transmission rod 61; the lower iron core 32 extends to the outside through the lower sealing plate 2, and the transmission rod 61 extends to the outside through the lower iron core 32; the upper iron core 31 and the valve housing 1 are provided with a sealing ring 7, and the lower iron core 32 and the lower sealing plate 2 are provided with a sealing ring 7.

[0051] In the specific embodiment, the electromagnetic valve is a normally closed or normally open electromagnetic valve, for example, when the upper coil 4 is arranged in the upper cavity 11, i.e. the upper coil 4 is arranged above the magnet 5, in this specific structure, the electromagnetic valve is a normally closed electromagnetic valve, i.e. before the electromagnetic valve is powered on, the electromagnetic valve is in a closed state, and the gas path or water path cannot be communicated at all.

[0052] For example, when the upper coil 4 is arranged in the lower cavity 12, i.e. the upper coil 4 is arranged below the magnet 5, in this specific structure, the electromagnetic valve is a normally open electromagnetic valve, i.e. before the electromagnetic valve is powered on, the electromagnetic valve is in an open state, and the gas path or water path can be communicated at all times.

[0053] In order to better describe the inventive concept of the present application, the normally closed electromagnetic valve is described, which can be referred to Figure 2 .

[0054] When the electromagnetic valve needs to be opened, the magnetic field generated by the energization of the upper coil 4 causes the valve core 6 to move upward, and the movement of the valve core 6 drives the transmission rod 61 to move together, the transmission rod 61 extends to the outside through the lower iron core 32 and the lower sealing plate 2, and can be connected with the external equipment 50, thereby realizing the control of the external equipment 50, at this time, it will change from the closed state to the open state, even if the current of the upper coil 4 is cut off and the magnetic field disappears, it can still maintain the open state all the time, and it does not need to be powered all the time. When it needs to be closed, the closed state can be restored manually.

[0055] If the electromagnetic valve is a normally open electromagnetic valve, please refer to Figure 4 When the electromagnetic valve needs to be opened, the magnetic field generated by the energization of the upper coil 4 causes the valve core 6 to move downward, and the movement of the valve core 6 drives the transmission rod 61 to move together, the transmission rod 61 extends to the outside through the lower iron core 32 and the lower sealing plate 2, and can be connected with the external equipment 50, thereby realizing the control of the external equipment 50, at this time, it will change from the open state to the closed state, even if the current of the upper coil 4 is cut off and the magnetic field disappears, it can still maintain the closed state all the time, and it does not need to be powered all the time. When it needs to be opened, the open state can be restored manually.

[0056] For this, in the traditional electromagnetic valve, in order to maintain the state, it needs to be powered continuously, resulting in a large amount of energy being wasted, while the electromagnetic valve does not need to be powered continuously after the state changes, which can significantly reduce unnecessary energy consumption, in line with the current energy-saving and environmental protection development trend. And, avoid the high heat generated by the continuous energization of the coil, the traditional electromagnetic valve has a large amount of heat generated by long-time energization, not only easy to burn the coil, shorten the service life of the electromagnetic valve, but also may cause thermal damage to the surrounding parts, increase the risk of equipment failure; while the electromagnetic valve does not need to be powered continuously, effectively reduces the heat generation, greatly improves the stability and reliability of the equipment, reduces the possibility of failure caused by overheating, and can maintain the working state stably for a long time. Also, this design also reduces the requirements for the heat dissipation system, reduces the overall cost and complexity of the equipment, and does not need to be equipped with a complex heat dissipation device to solve the problem of coil heating, making the installation and use of the electromagnetic valve more convenient, suitable for various application scenarios, especially for limited space or high heat dissipation requirements. It has important practical significance; at the same time, it also provides the possibility for developing more miniaturized and integrated devices, further promoting the technological progress and product innovation in related fields. It can be seen that the battery valve has the advantages of low power consumption.

[0057] Moreover, the electromagnetic valve is provided with a sealing ring 7 between the upper iron core 31 and the valve housing 1, and between the lower iron core 32 and the lower sealing plate 2, which can effectively prevent gas or liquid from leaking from the inside of the valve housing 1, ensuring the sealing performance of the electromagnetic valve in applications such as gas circuits or water circuits, meeting the use requirements of high-gas-tightness fields such as gas appliances. And good sealing performance makes the electromagnetic valve can adapt to various complex working environments, whether it is high pressure, high temperature or corrosive medium conditions, it can maintain stable performance, not only broadens the application range of the electromagnetic valve, but also improves the overall reliability and durability of the equipment. At the same time, good sealing performance reduces the possibility of external impurities entering the inside of the electromagnetic valve, reduces the risk of internal parts being damaged due to impurity pollution, thereby prolonging the service life of the electromagnetic valve and reducing maintenance costs. It can be seen that the battery valve also has the advantages of good sealing performance. And it can withstand the high pressure 1.6MPa sealing of GB 35844-2018 "Bottled Liquefied Petroleum Gas Regulator".

[0058] Moreover, the combination design of the upper coil 4, the magnet 5 and the guide sleeve 3, as well as the layout of the upper iron core 31 and the lower iron core 32 in the guide sleeve 3, makes the overall structure of the electromagnetic valve compact and occupies small space, which is conducive to installation in various space-limited devices. And in space-limited application scenarios, such as small-sized smart devices, portable electronic products and compact industrial control systems, the small size of the electromagnetic valve makes it easy to install and integrate, without occupying too much space, providing greater flexibility for the overall layout and design of the device. At the same time, the smaller volume usually means lighter weight, which is crucial for devices that need to be moved or portable, it reduces the overall weight burden of the device, making it easy to carry and transport, improving the mobility and use convenience of the device; moreover, the small-sized electromagnetic valve can use less material in the production process, effectively reducing production costs. It can be seen that the battery valve also has the advantages of small size. After calculation, the volume of the electromagnetic valve is only 1 / 3 of the common electromagnetic valve on the market, and the cost is 1 / 2 of the common electromagnetic valve on the market.

[0059] In summary, the electromagnetic valve of the present application can combine the gas-tightness advantages of the inner valve core 6 with the small size and low power consumption advantages of the outer valve core 6 to meet the needs of different application scenarios and promote the development of related industries and product upgrading.

[0060] It should be noted that the magnet 5 is also provided in the electromagnetic valve, and the magnetic force of the magnet 5 can help the spool 6 and the transmission rod 61 to remain in a specific position after the electromagnetic valve is powered off. For example, when the electromagnetic valve is a normally closed electromagnetic valve, the magnetic force of the magnet 5 makes the spool 6 and the transmission rod 61 remain in the closed position after the electromagnetic valve is powered off, and the gas path or the water path cannot flow through; when the electromagnetic valve is a normally open electromagnetic valve, the magnetic force of the magnet 5 makes the spool 6 and the transmission rod 61 remain in the open position after the electromagnetic valve is powered off, and the gas path or the water path can flow through.

[0061] It should also be noted that in the electromagnetic valve, the original closed state or the manual state can be restored manually. The structure of the manual restoration component can specifically include a manual operation connecting rod 20 and a manual operation button 30, which can be referred to Figure 15 and Figure 16 . Specifically, when the electromagnetic valve needs to be restored to the initial state, the manual operation connecting rod 20 connects the manual operation button 30 and the related mechanical structure inside the electromagnetic valve, and when the manual operation button 30 is pressed, the external operating force is transmitted to the inside of the electromagnetic valve through the manual operation connecting rod 20. For example, the manual operation connecting rod 20 pushes or pulls the transmission rod 61 inside the electromagnetic valve to return to the original closed state.

[0062] For example, for a normally closed electromagnetic valve, when the electromagnetic valve is in an open state and needs to be restored to a closed state, the manual operation button 30 is pulled down, the manual operation connecting rod 20 pulls the transmission rod 61 to move downward, so that the electromagnetic valve is restored to the closed state, thereby realizing the function of manually restoring the closed state. For example, for a normally open electromagnetic valve, when the electromagnetic valve is in a closed state and needs to be restored to an open state, the manual operation button 30 is pressed, the manual operation connecting rod 20 pushes the transmission rod 61 to move upward, so that the electromagnetic valve is restored to the closed state, thereby realizing the function of manually restoring the closed state.

[0063] In actual application, in addition to the above-mentioned manual restoration of the original closed state or the manual state, an automatic reset structure can also be designed, for example, in some other embodiments, a spring 40 is provided between the lower sealing plate 2 and the transmission rod 61, and the spring 40 is used for reset, which can be referred to Figure 5 .

[0064] It should be noted that in addition to the above-mentioned manual restoration of the original closed state or the manual state and the reset by the spring 40, the electromagnetic valve also has another different reset scheme, for example, in some other embodiments, a forward voltage or a reverse voltage can be applied to the coil 4 to realize the movement of the spool 6 in different directions, which is an electric reset.

[0065] For example, for a normally closed electromagnetic valve, when the upper coil 4 is supplied with a forward voltage, the generated magnetic field will act on the spool 6 inside the electromagnetic valve in an upward direction, thereby driving the spool 6 to move upward, changing from a closed state to an open state; when the upper coil 4 is supplied with a reverse voltage, the direction of the magnetic field will change, thereby pushing the spool 6 to move in the opposite direction, i.e. downward, to reset from the open state to the closed state. For example, for a normally open electromagnetic valve, when the upper coil 4 is supplied with a reverse voltage, the generated magnetic field will act on the spool 6 inside the electromagnetic valve in a downward direction, thereby driving the spool 6 to move downward, changing from an open state to a closed state; when the upper coil 4 is supplied with a forward voltage, the direction of the magnetic field will change, thereby pushing the spool 6 to move in the opposite direction, i.e. upward, to reset from the closed state to the open state.

[0066] Specifically, the valve housing 1 includes a transverse top section 13 and vertical side sections 14 arranged at the bottom of both ends of the transverse top section 13, and the transverse top section 13 and the pair of vertical side sections 14 form an assembly space arranged through in a horizontal direction. In this regard, the assembly space formed by the transverse top section 13 and the vertical side sections 14 of the valve housing 1 provides mounting positions for various components of the electromagnetic valve, and during operation, the upper coil 4, the magnet 5, the guide sleeve 3, the upper iron core 31, the lower iron core 32, the spool 6 and other components are arranged in this assembly space.

[0067] Moreover, the combination of the transverse top section 13 and the vertical side sections 14 forms a stable frame structure that can effectively support and fix the various components inside, and this structural design enables the electromagnetic valve to withstand certain external forces and vibrations during operation, maintains stable performance, and reduces the probability of failure caused by external interference. Moreover, the through-arranged assembly space provides convenience for the installation of various components, and during assembly, the worker can put the components into the assembly space in order from one direction, which simplifies the assembly process, improves production efficiency, and reduces assembly costs. More importantly, the through-arranged assembly space is conducive to air circulation and heat dissipation, and during operation of the electromagnetic valve, the heat generated can be dissipated through the air flow in the assembly space, reducing the internal temperature and avoiding the impact of overheating on the performance and service life of the electromagnetic valve.

[0068] Specifically, the upper iron core 31 is provided with a limiting pad 33 towards the bottom of the spool 6. In this way, during the operation of the electromagnetic valve, when the spool 6 moves in the vertical direction within the guide sleeve 3, the upper iron core 31 plays an important electromagnetic role. The limiting pad 33 provided on the upper iron core 31 towards the bottom of the spool 6 mainly plays a role when the spool 6 moves to a certain position, for example, when the spool 6 moves upwards to approach the upper iron core 31, the limiting pad 33 can limit the further upward movement of the spool 6, preventing the spool 6 from excessive impact on the upper iron core 31 and causing damage. At the same time, in some cases, the limiting pad 33 can also play a buffering role, reducing the impact force between the spool 6 and the upper iron core 31, making the movement of the spool 6 more stable.

[0069] It can be seen that the limiting pad 33 can effectively protect the upper iron core 31 and the spool 6 from excessive impact damage. During the frequent on-off operation of the electromagnetic valve, the speed and force of the spool 6 movement may be large, and without the protection of the limiting pad 33, the spool 6 may directly impact the upper iron core 31, causing the upper iron core 31 to deform, damage or the spool 6 to wear, thereby affecting the performance and service life of the electromagnetic valve. Therefore, the setting of the limiting pad 33 can greatly reduce the risk of such damage. And when the impact force between the spool 6 and the upper iron core 31 is buffered, the limiting pad 33 can reduce the noise and vibration generated during the operation of the electromagnetic valve, which is very important for some application scenarios that require high noise and vibration, such as medical equipment, precision instruments and other application scenarios.

[0070] Specifically, the spool 6, the upper iron core 31 and the lower iron core 32 are made of the same material. During the operation of the electromagnetic valve, when the upper coil 4 is energized to generate a magnetic field, since the spool 6, the upper iron core 31 and the lower iron core 32 are made of the same material, their magnetic properties in the magnetic field are consistent, and the magnetic field will have similar electromagnetic force effects on these components, making the movement of the spool 6 within the guide sleeve 3 more smooth. And the same manufacturing material ensures that the electromagnetic response of the spool 6, the upper iron core 31 and the lower iron core 32 in the magnetic field has high consistency, which means that when the magnetic field changes, they will be affected in a similar way, thereby making the action of the electromagnetic valve more stable and reliable, whether in fast switching state or in long time operation, it can maintain good performance.

[0071] Specifically, the spool 6, the upper iron core 31 and the lower iron core 32 are made of 1215 steel material. Since 1215 steel material has good magnetic conductivity, it can efficiently conduct the magnetic field, which makes the spool 6, the upper iron core 31 and the lower iron core 32 respond quickly under the action of the magnetic field, improving the action speed and sensitivity of the electromagnetic valve. The magnetic field can be concentrated on these components, reducing energy loss and improving the utilization efficiency of the magnetic field.

[0072] It should also be noted that in this solenoid valve, the original closed state or manual state can be manually restored. The structure of the manual restoration component specifically includes a manual operation lever 20 and a manual operation button 30, as detailed in [reference needed]. Figure 15 and Figure 16 Specifically, when the solenoid valve needs to be returned to its initial state, the manual operation linkage 20 connects the manual operation button 30 to the relevant mechanical structure inside the solenoid valve. When the manual operation button 30 is pressed, the external operating force is transmitted to the inside of the solenoid valve through the manual operation linkage 20. For example, the manual operation linkage 20 will push or pull the transmission rod 61 inside the solenoid valve, returning it to its original closed state.

[0073] For example, for a normally closed solenoid valve, when the solenoid valve is in the open state and needs to be returned to the closed state, pulling down the manual operation button 30 will cause the manual operation linkage 20 to move the transmission rod 61 downwards, thus restoring the solenoid valve to the closed state, thereby achieving the function of manually restoring the closed state. As another example, for a normally open solenoid valve, when the solenoid valve is in the closed state and needs to be returned to the open state, pressing the manual operation button 30 will cause the manual operation linkage 20 to push the transmission rod 61 upwards, thus restoring the solenoid valve to the closed state, thereby achieving the function of manually restoring the closed state.

[0074] In practical applications, besides the aforementioned ability to manually restore the original closed or manual state, an automatic reset structure can also be designed. For example, in some other embodiments, a spring 40 is specifically provided between the lower sealing plate 2 and the transmission rod 61, using the spring 40 for reset. (See reference...) Figure 8 .

[0075] Example 2: Dual-hold solenoid valve

[0076] The following combination Figures 6-8 The solenoid valve of this application is described.

[0077] The solenoid valve in this second embodiment is an improvement on the first embodiment. Based on the basic scheme of the first embodiment, this solenoid valve further includes a lower coil 8, which is sleeved on the outer circumferential side of the guide sleeve 3. The upper coil 4, the magnet 5, and the lower coil 8 are arranged vertically from top to bottom. The upper coil 4 is located in the upper cavity 11, and the lower coil 8 is located in the lower cavity 12.

[0078] Thus, when it is necessary to change the state of this solenoid valve, it can be specifically controlled by energizing the upper coil 4 and the lower coil 8 respectively. In the initial state, the upper coil 4, the magnet 5, and the lower coil 8 are arranged in sequence in the vertical direction, and the valve core 6 is in a specific position within the guide sleeve 3.

[0079] To better describe the inventive concept of this solenoid valve, the following description is provided in conjunction with the accompanying drawings, in which...Figure 7 The electromagnetic valve is in the closed state.

[0080] For example, when it is needed to change the electromagnetic valve from the closed state to the open state, a forward voltage is applied to the upper coil 4, the upper coil 4 generates a magnetic field, and the electromagnetic action of the upper core 31 is cooperated to make the valve core 6 move upward in the guide sleeve 3 to switch to the open state. At this time, even if the current of the upper coil 4 is cut off and the magnetic field disappears, the open state can still be maintained, and it is not necessary to supply power all the time. It should be noted that in the present embodiment, in addition to the fact that the magnet 5 can make the valve core 6 and the transmission rod 61 remain in a specific position, if it is further needed to maintain the open state, a forward voltage can also be applied to the lower coil 8, the lower coil 8 can generate an upward force acting on the valve core 6 inside the electromagnetic valve, and the valve core 6 in the open state can be stably maintained.

[0081] In addition, when it is needed to restore the electromagnetic valve from the open state to the closed state, a reverse voltage can be applied to the lower coil 8, the lower coil 8 generates a magnetic field, generates a downward force acting on the valve core 6 inside the electromagnetic valve, and the electromagnetic action of the lower core 32 is cooperated to make the valve core 6 move downward in the guide sleeve 3 to switch to the closed state. At this time, even if the current of the lower coil 8 is cut off and the magnetic field disappears, the open state can still be maintained, and it is not necessary to supply power all the time. It should be noted that in the present embodiment, in addition to the fact that the magnet 5 can make the valve core 6 and the transmission rod 61 remain in a specific position, if it is further needed to maintain the closed state, a reverse voltage can also be applied to the upper coil 4, the upper coil 4 can generate a downward force acting on the valve core 6 inside the electromagnetic valve, and the valve core 6 in the closed state can be stably maintained.

[0082] It should be noted that the above-mentioned switching between the open state and the closed state by applying power to the upper coil 4 or the lower coil 8 is an electric reset. In the present application, in addition to the electric reset, a manual reset can also be performed to meet different requirements in different use occasions and to be applied more widely.

[0083] The structure of the manual reset can refer to the structure of the manual recovery component in Embodiment One, for example, can specifically include the manual operation connecting rod 20 and the manual operation button 30. Specifically, when the electromagnetic valve needs to be restored to the initial state, the manual operation connecting rod 20 connects the manual operation button 30 and the related mechanical structure inside the electromagnetic valve, and when the manual operation button 30 is pressed, the external operating force is transmitted to the inside of the electromagnetic valve through the manual operation connecting rod 20. For example, the manual operation connecting rod 20 pushes or pulls the transmission rod 61 inside the electromagnetic valve to make it return to the original closed state.

[0084] For example, for a normally closed electromagnetic valve, when the electromagnetic valve is in an open state and needs to be restored to a closed state, the manual operation button 30 is pulled down, the manual operation connecting rod 20 pulls the transmission rod 61 to move downward, so that the electromagnetic valve is restored to the closed state, thereby realizing the function of manually restoring the closed state. For example, for a normally open electromagnetic valve, when the electromagnetic valve is in a closed state and needs to be restored to an open state, the manual operation button 30 is pressed down, the manual operation connecting rod 20 pushes the transmission rod 61 to move upward, so that the electromagnetic valve is restored to the closed state, thereby realizing the function of manually restoring the closed state.

[0085] It should be further pointed out that in other embodiments, when it is necessary to change the electromagnetic valve from a closed state to an open state, a forward voltage can also be applied to the upper coil 4 and a forward voltage can also be applied to the lower coil 8 at the same time, which will generate an upward force, so that the valve core 6 moves upward in the guide sleeve 3 to switch to the open state. Alternatively, when it is necessary to restore the electromagnetic valve from an open state to a closed state, a reverse voltage can also be applied to the lower coil 8 and a reverse voltage can also be applied to the upper coil 4 at the same time, which will generate a downward force, so that the valve core 6 moves downward in the guide sleeve 3 to switch to the closed state.

[0086] Example Three Electromagnetic Valve with Feedback

[0087] The following will be described in combination with Figures 9-14 The electromagnetic valve of the present application is described.

[0088] At present, the electromagnetic valves on the market all have a single function, that is, they are normally open or normally closed, and change the working state to normally closed or normally open after being powered on, and they need to be powered on all the time. In actual use, it is found that when these electromagnetic valves are installed in the internal working scene of a valve body or a machine, it is impossible to judge whether the electromagnetic valve has moved or moved to the position, for example, if they are applied in a gas equipment, if the electromagnetic valve does not move, it may cause a serious accident. Based on this, the applicant has developed an electromagnetic valve with feedback, which can feed back a signal when the electromagnetic valve moves to the position, so that the staff or user can easily distinguish whether the electromagnetic valve has "really" moved to the position, and at the same time, the state thereof can be monitored remotely, so as to make various remote control commands to ensure the function and use safety.

[0089] The electromagnetic valve of the present application is described.

[0088] At present, the electromagnetic valves on the market all have a single function, that is, they are normally open or normally closed, and change the working state to normally closed or normally open after being powered on, and they need to be powered on all the time. In actual use, it is found that when these electromagnetic valves are installed in the internal working scene of a valve body or a machine, it is impossible to judge whether the electromagnetic valve has moved or moved to the position, for example, if they are applied in a gas equipment, if the electromagnetic valve does not move, it may cause a serious accident. Based on this, the applicant has developed an electromagnetic valve with feedback, which can feed back a signal when the electromagnetic valve moves to the position, so that the staff or user can easily distinguish whether the electromagnetic valve has "really" moved to the position, and at the same time, the state thereof can be monitored remotely, so as to make various remote control commands to ensure the function and use safety.

[0089] The electromagnetic valve of the present application is described.

[0088] At present, the electromagnetic valves on the market all have a single function, that is, they are normally open or normally closed, and change the working state to normally closed or normally open after being powered on, and they need to be powered on all the time. In actual use, it is found that when these electromagnetic valves are installed in the internal working scene of a valve body or a machine, it is impossible to judge whether the electromagnetic valve has moved or moved to the position, for example, if they are applied in a gas equipment, if the electromagnetic valve does not move, it may cause a serious accident. Based on this, the applicant has developed an electromagnetic valve with feedback, which can feed back a signal when the electromagnetic valve moves to the position, so that the staff or user can easily distinguish whether the electromagnetic valve has "really" moved to the position, and at the same time, the state thereof can be monitored remotely, so as to make various remote control commands to ensure the function and use safety.

[0090] In order to better understand the inventive concept of the electromagnetic valve, a normally open electromagnetic valve is described.

[0091] The electromagnetic valve is in an open state, at this time the upper coil 4 is not powered, the valve core 6 is in a specific position, and the magnetic force sensor 10 does not detect a significant change in magnetic force. When the electromagnetic valve needs to be closed, the upper coil 4 is powered, and the upper coil 4 generates a magnetic field after being powered, causing the valve core 6 to move downward, and the electromagnetic valve changes from an open state to a closed state.

[0092] During the movement of the valve core 6, the magnetic force sensor 10 judges whether the electromagnetic valve is moved to the position by sensing the change of the magnetic field, and when the electromagnetic valve is moved to the position, i.e. the valve core 6 completely reaches the closed position, the change of the magnetic field reaches a specific value, which can be determined according to actual multiple tests. At this time, the magnetic force sensor 10 can judge that the electromagnetic valve is moved to the position according to the specific value reached by the change of the magnetic field, feed back a signal to the prompting unit, and the prompting unit and the magnetic force sensor 10 are in communication connection, and after receiving the signal, the prompting unit prompts, and the prompting mode can be various forms, such as light flashing, sound prompting, etc. If the electromagnetic valve is not moved to the position, there is no feedback signal, and the prompting unit will not prompt.

[0093] It can be seen that the prompting unit can provide clear state indication for the staff or user. In actual application, especially in some complex systems, it is difficult to directly observe the internal movement of the electromagnetic valve. By setting the prompting unit, people can quickly understand whether the electromagnetic valve is moved to the position, which improves the convenience and accuracy of operation, which is very important for working scenes that are difficult to directly observe, such as installed in valve body, machine, etc. And for some high safety requirement application scenes, such as involving gas, chemical industry, etc., timely and accurate prompting can ensure the normal operation of the electromagnetic valve, avoid safety accidents caused by electromagnetic valve failure, and the existence of the prompting unit greatly enhances the safety protection of the equipment.

[0094] Moreover, the mounting and fixing support 9 is detachably inserted and arranged, which facilitates the installation and maintenance of the magnetic force sensor 10; at the same time, this design also makes the prompting unit can be flexibly arranged according to actual needs, which improves the maintainability and adaptability of the whole system.

[0095] Specifically, the upper coil 4, the magnet 5 and the magnetic force sensor 10 are arranged in the vertical direction from top to bottom. That is, the upper coil 4 is arranged in the upper cavity 11, and the mounting and fixing support 9 is arranged in the lower cavity 12. This design of arranging in the vertical direction makes the structure of the electromagnetic valve more compact, and the upper coil 4, the magnet 5 and the magnetic force sensor 10 are reasonably arranged in the limited space, which reduces the overall volume of the electromagnetic valve, and facilitates the installation in various equipment, especially in the application scene with limited space.

[0096] And if the solenoid needs to be maintained or upgraded, each component can be conveniently operated individually; for example, the upper coil 4 can be replaced, the position of the magnet 5 can be adjusted, or the magnetic sensor 10 can be upgraded, without causing too much impact on other components, which improves the maintainability and scalability of the solenoid. In order to better understand the scalability of the solenoid, an example is given.

[0097] Since the installation fixing bracket 9 is detachably inserted, it is equivalent to a modular design. The single holding solenoid in embodiment one and the solenoid with feedback in embodiment three are different in that the solenoid with feedback in embodiment three has additional feedback-related structures, while the other structures are the same. Therefore, by pulling and disassembling, the installation and replacement of the two different solenoids of the single holding and feedback types can be achieved, which greatly facilitates the after-sales maintenance or product upgrading.

[0098] Specifically, the vertical side section 14 of the valve housing 1 has a clamping groove, and the installation fixing bracket 9 is provided with a buckle. When the installation fixing bracket 9 is inserted into the valve housing 1, the buckle is used for clamping in the clamping groove. In this way, when the installation fixing bracket 9 needs to be installed into the valve housing 1, the installation fixing bracket 9 is inserted into the valve housing 1. During the insertion process, the buckle on the installation fixing bracket 9 gradually approaches the clamping groove of the vertical side section 14 of the valve housing 1. When the installation fixing bracket 9 is completely inserted into place, the buckle will be clamped in the clamping groove, achieving the fixed installation of the installation fixing bracket 9 in the valve housing 1. When the installation fixing bracket 9 needs to be disassembled, a certain external force can be applied to make the buckle separate from the clamping groove, and then the installation fixing bracket 9 can be pulled out of the valve housing 1.

[0099] It can be seen that the design of the buckle and the clamping groove makes the installation and disassembly of the installation fixing bracket 9 very convenient and fast, which can greatly improve the work efficiency and save time and labor cost during production, installation and maintenance. Moreover, if the magnetic sensor 10 fails or needs to be upgraded, the installation fixing bracket 9 can be easily disassembled for maintenance or replacement operation through the connection mode of the buckle and the clamping groove, which makes the maintenance and upgrading of the solenoid more simple and convenient, and reduces the maintenance cost. More importantly, the design of the buckle and the clamping groove can be applied to different specifications and models of the installation fixing bracket 9 and the valve housing 1, which has a certain universality, which makes it possible to use standardized components during design and production, improving production efficiency and reducing cost, such as the installation and replacement of the two different solenoids of the single holding and feedback types.

[0100] Specifically, the mounting and fixing bracket 9 comprises a bracket body section 91 and a pair of buckle side sections 92 arranged on the bracket body section 91, the pair of buckle side sections 92 are arranged on the same side of the bracket body section 91 and arranged inwardly to leave a contact section 911 arranged outwardly at each end of the bracket body section 91, and the clamping blocks 921 of the pair of buckle side sections 92 are arranged opposite to each other; the valve housing 1 has a pair of vertical side sections 14, each vertical side section 14 has a clamping groove arranged on each side along the through direction of the assembly space, and the two clamping grooves are a first clamping groove 141 and a second clamping groove 142; when the mounting and fixing bracket 9 is inserted into the valve housing 1, the clamping block 921 of one buckle side section 92 is clamped in the first clamping groove 141 of one vertical side section 14, and the contact section 911 is clamped in the second clamping groove 142 of the same vertical side section 14.

[0101] When the mounting and fixing bracket 9 is ready to be inserted into the valve housing 1, the bracket body section 91 of the mounting and fixing bracket 9 is aligned with the assembly space of the valve housing 1; then, the mounting and fixing bracket 9 is pushed into the valve housing 1 along the through direction of the assembly space. During the insertion process, the clamping block 921 of one buckle side section 92 on the mounting and fixing bracket 9 will be clamped in the first clamping groove 141 as it continues to be pushed in. At the same time, the contact section 911 on the same side of the buckle side section 92 will gradually approach the second clamping groove 142 of the same vertical side section 14 and finally be clamped in the second clamping groove 142. For the other buckle side section 92 and the corresponding vertical side section 14, the clamping block 921 and the first clamping groove 141 and the contact section 911 and the second clamping groove 142 are clamped in the same way.

[0102] When the mounting and fixing bracket 9 is completely inserted into the valve housing 1, the clamping block 921 of the buckle side section 92 and the first clamping groove 141 of the vertical side section 14 are clamped, and the contact section 911 and the second clamping groove 142 are clamped, which realizes the fixation of the mounting and fixing bracket 9 in the valve housing 1; the clamping of the clamping block 921 and the first clamping groove 141 provides a horizontal fixation force to prevent the mounting and fixing bracket 9 from moving.

[0103] It can be seen that this structure design enables the installation fixing support 9 to be firmly installed in the valve housing 1, and through the double clamping of the clamping block 921 and the first clamping groove 141 and the abutting segment 911 and the second clamping groove 142, a stable fixing force is provided, ensuring that the installation fixing support 9 will not loosen or shift during the operation of the electromagnetic valve, and ensuring the normal operation of the magnetic force sensor 10. Moreover, the clamping structure can achieve precise positioning of the installation fixing support 9 in the valve housing 1, and the clamping block 921 and the abutting segment 911 of each clamping side segment 92 correspondingly match the clamping groove, ensuring that the installation fixing support 9 can accurately reach the predetermined position when it is inserted into the valve housing 1, improving the accuracy and consistency of installation. At the same time, although the installation fixing support 9 can be firmly fixed in the valve housing 1, this clamping structure also makes installation and disassembly very convenient and fast, and when the magnetic force sensor 10 needs to be installed or replaced, it only needs to be inserted or pulled out of the valve housing 1, without the need for complex tools or tedious operations, improving work efficiency.

[0104] Specifically, the electromagnetic valve also includes a power supply unit, which is electrically connected with the magnetic force sensor 10 and used to supply 3V voltage for the magnetic force sensor 10. In this way, when the system starts or the magnetic force sensor 10 needs to work, the power supply unit outputs a stable 3V voltage, which provides the required power for the internal circuit elements of the magnetic force sensor 10, enabling it to operate normally. At the same time, 3V low voltage, specifically two dry batteries, can be used to power the magnetic force sensor 10, without the need to connect 220V mains, which has broad application prospects for the intelligent control of portable mobile products or outdoor products. Moreover, the 3V voltage provides a relatively stable working power source for the magnetic force sensor 10, and under this voltage, the internal circuit of the magnetic force sensor 10 can operate in a relatively stable state, reducing measurement errors and instability caused by voltage fluctuations, and ensuring that the magnetic force sensor 10 can accurately detect magnetic field changes to provide reliable data for the state feedback of the electromagnetic valve.

[0105] It should be further noted that in the electromagnetic valve, the original closed state or manual state can be restored manually, and the structure of the manual restoration part can specifically include a manual operation connecting rod 20 and a manual operation button 30, which can be referred to in Figure 15 and Figure 16 . Specifically, when the electromagnetic valve needs to be restored to the initial state, the manual operation connecting rod 20 connects the manual operation button 30 and the related mechanical structure inside the electromagnetic valve, and when the manual operation button 30 is pressed, the external operating force is transmitted to the inside of the electromagnetic valve through the manual operation connecting rod 20. For example, the manual operation connecting rod 20 pushes or pulls the transmission rod 61 inside the electromagnetic valve, so that it returns to the original closed state.

[0106] For example, for the normally closed electromagnetic valve, when the electromagnetic valve is in the open state and needs to restore the closed state, pull down the manual operation button 30, the manual operation connecting rod 20 pulls the transmission rod 61 to move downward, so that the electromagnetic valve restores to the closed state, thereby realizing the function of manually restoring the closed state. For example, for the normally open electromagnetic valve, when the electromagnetic valve is in the closed state and needs to restore the open state, press the manual operation button 30, the manual operation connecting rod 20 pushes the transmission rod 61 to move upward, so that the electromagnetic valve restores to the closed state, thereby realizing the function of manually restoring the closed state.

[0107] In practical application, in addition to the above-mentioned manual recovery of the original closed state or manual state, an automatic reset structure can also be designed, for example, in some other embodiments, a spring 40 is arranged between the lower sealing plate 2 and the transmission rod 61, and the spring 40 is used for reset. Please refer to Figure 12 .

[0108] The technical means disclosed in the present application scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that for ordinary skilled persons in the art, without departing from the principle of the present application, a number of improvements and refinements can also be made, which are also considered to be within the protection scope of the present application.

Claims

1. A solenoid valve, characterized in that, The valve housing (1) includes a valve body (1) and a lower sealing plate (2) assembled at the bottom of the valve body (1). The valve body (1) is provided with a guide sleeve (3), an upper coil (4) and a magnet (5). The upper coil (4) and the magnet (5) are sleeved on the circumferential outer side of the guide sleeve (3). The magnet (5) divides the assembly space of the valve body (1) into an upper cavity (11) and a lower cavity (12) arranged in the vertical direction. The upper coil (4) is disposed in one of the upper cavity (11) and the lower cavity (12). The guide sleeve (3) is fixed with an upper iron core (31) and a lower iron core (32). The upper iron core (31) and the lower iron core (32) are arranged vertically. The guide sleeve (3) is provided with a valve core (6) that moves vertically. The valve core (6) is provided with a transmission rod (61). The lower iron core (32) extends outward through the lower sealing plate (2). The transmission rod (61) extends outward through the lower iron core (32). A sealing ring (7) is provided between the upper iron core (31) and the valve body (1) and between the lower iron core (32) and the lower sealing plate (2); The valve housing (1) includes a transverse top section (13) and vertical side sections (14) disposed at the bottom of both ends of the transverse top section (13). The transverse top section (13) and the pair of vertical side sections (14) surround and form an assembly space that runs through a horizontal direction. The solenoid valve also includes a lower coil (8), which is sleeved on the outer circumferential side of the guide sleeve (3). The upper coil (4), magnet (5) and lower coil (8) are arranged vertically from top to bottom. The upper coil (4) is located in the upper cavity (11), and the lower coil (8) is located in the lower cavity (12). The solenoid valve also includes a mounting bracket (9) and a magnetic sensor (10) mounted on the mounting bracket (9); the upper coil (4) is disposed in one of the upper cavity (11) and the lower cavity (12), and the mounting bracket (9) is detachably inserted into the other of the upper cavity (11) and the lower cavity (12); the solenoid valve also includes a prompting unit, which is communicatively connected to the magnetic sensor (10), and the magnetic sensor (10) is used to sense changes in magnetic force to determine whether the solenoid valve has been activated; when the solenoid valve is activated, the magnetic sensor (10) sends a signal to the prompting unit, and the prompting unit provides a prompt.

2. The solenoid valve according to claim 1, characterized in that, The upper iron core (31) is provided with a limiting pad (33) facing the bottom of the valve core (6).

3. The solenoid valve according to claim 1, characterized in that, The upper coil (4), magnet (5) and magnetic sensor (10) are arranged vertically from top to bottom. The upper coil (4) is located in the upper cavity (11), and the mounting bracket (9) is located in the lower cavity (12).

4. A solenoid valve according to claim 1, characterized in that, The vertical side section (14) of the valve body (1) has a slot, and the mounting bracket (9) is provided with a buckle. When the mounting bracket (9) is inserted into the valve body (1), the buckle is used to engage in the slot.

5. A solenoid valve according to claim 4, characterized in that, The mounting bracket (9) includes a main bracket section (91) and a pair of snap-fit ​​side sections (92) disposed on the main bracket section (91); A pair of buckle side segments (92) are provided on the same side of the bracket body segment (91) and are located inward, so that an abutment segment (911) is provided inward at each end of the bracket body segment (91); The locking blocks (921) of each of the pair of buckle side segments (92) are arranged opposite to each other; The valve housing (1) has a pair of vertical side sections (14), each of the vertical side sections (14) having a groove recessed on both sides along the through direction of the assembly space, the two grooves being a first groove (141) and a second groove (142). When the mounting bracket (9) is inserted into the valve body (1), the latch block (921) of one of the latch side sections (92) is engaged in the first slot (141) of one of the vertical side sections (14), and the abutment section (911) is engaged in the second slot (142) of the same vertical side section (14).

6. A solenoid valve according to claim 1, characterized in that, It also includes a power supply unit, which is electrically connected to the magnetic sensor (10) and is used to supply the magnetic sensor (10) with a 3V voltage.

7. A solenoid valve according to claim 1, characterized in that, The valve core (6), upper iron core (31) and lower iron core (32) are made of the same material.

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