Electromagnetic valve with flow regulating function

Abstract

The utility model relates to solenoid valve structure technical field relates to a solenoid valve with the flow function of adjusting. Including solenoid valve subassembly, passageway subassembly, solenoid valve subassembly, passageway subassembly are connected through 4 screws, and the sealing ring is used to guarantee the sealing at the joint and is through spring and spring support main valve and is in the initial state under the condition of " open " position. The above-mentioned utility model structure is compact, and the quality is stable and reliable, can satisfy the demand of adjusting flow under the condition of big pressure and small suction.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve structure technology, and specifically to an electromagnetic valve with flow regulation function. Background Technology

[0002] Existing solenoid valves are generally classified into direct-acting, pilot-operated, and step-direct-acting solenoid valves. These types of solenoid valves can be collectively referred to as "shut-off valves," as they only have two states: open or closed, and cannot control flow rate.

[0003] According to the existing solenoid valve structure, the solenoid valve can only be in the open or closed state, and cannot control the flow rate of the fluid passing through it. This limits the solenoid valve in the operating environment and makes it difficult to meet control requirements.

[0004] Case 1: A two-position three-way solenoid valve (CN201520823847.X) has a simple and reasonable structure, in which the steel ball and the moving iron core are fixed together, shortening the response time. Similar to this utility model, the moving iron core is a center-pass structure; the difference is that this utility model has two flow channels and can adjust the flow rate by replacing different components.

[0005] Case 2: A multi-connection pilot-operated solenoid valve (CN202122412984.2) features an electromagnetic pilot head. When the electromagnetic coil is energized, magnetism is generated, attracting the pilot head upwards and opening the sealing port to form a channel. By energizing or de-energizing the solenoid valve, it can be quickly opened or closed, thus improving the valve's response speed and extending its service life. When the electromagnetic coil is not operating, rotating the nut forward pushes the second piston to the right, opening the pressure relief port and thus opening the solenoid valve. Rotating the nut in the opposite direction pushes the second piston to the left, sealing the pressure relief port and closing the solenoid valve. This allows for manual control of the solenoid valve, improving its practicality. Similar to this invention, both have a manual control mechanism; however, this invention has two flow channels and allows for flow rate adjustment by replacing different components.

[0006] Case 3: A Direct-Acting Normally Closed Solenoid Valve CN202222905932.3: This paper proposes a direct-acting normally closed solenoid valve. Similar to this invention, both are direct-acting solenoid valves; however, this invention features a step-by-step direct-acting structure, enabling small suction force to overcome large pressure, and, in conjunction with a throttling element, to control flow rate. Utility Model Content

[0007] Utility Model Purpose A solenoid valve with simple structure, compact appearance, reliable and stable quality, and adjustable flow rate is proposed.

[0008] Technical solution A solenoid valve with flow regulation function includes a solenoid valve assembly 100 and a channel assembly 200; wherein The solenoid valve assembly 100 includes: end cap 1, sealing ring A2, sealing ring B3, iron core support 4, coil assembly 5, armature 6, auxiliary valve 7, spring A8, main valve 9, retaining ring 10, baffle 11, sealing ring C12, upper housing 13, and electrical socket 14. The coil assembly 5 is installed in the inner cavity of the upper housing 13, and a seal is formed below by the sealing ring C12. The iron core support 4, coil assembly 5, armature 6, auxiliary valve 7, spring A8, main valve 9, retaining ring 10, and baffle 11 are sequentially installed in the inner cavity of the coil assembly 5, all with clearance fit. The armature 6 and auxiliary valve 7 are connected by threads. The retaining ring 10 is installed in the groove of the main valve 9, restricting the baffle 11 and auxiliary valve 7 in the main valve 9 to form a whole. The retaining ring 10, baffle 11, auxiliary valve 7 and main valve 9 are installed from below the coil assembly 5, and the armature 6 and spring A8 are installed from above the coil assembly 5. Tightening the armature 6 ensures that the armature 6 is installed in place. The intermediate shaft of the auxiliary valve 7, the intermediate hole of the coil assembly 5 and the intermediate hole of the baffle 11 are all triangular structures and will not rotate with each other. The outer side of the baffle 11 and the inner side of the main valve 9 have planar structures to limit each other and prevent rotation. The iron core support 4 is inserted from above the coil assembly 5 and fits with the coil assembly 5 with a gap. It uses a groove structure to cooperate with the armature 6. The damping force of the sealing ring B3 and the end cover 1 ensure that the armature will not rotate. The end cover 1 is threadedly connected to the upper housing 13 to press the iron core support 4 tightly. The gap between the upper housing 13 and the coil assembly 5 is filled with insulating rubber. The upper housing 13 and the end cover 1 are sealed with a sealing ring A2. The power socket 14 is used to supply power to the coil assembly 5.

[0009] Channel assembly 200 includes a lower housing 15, a mounting plate 16, screws A17, a throttling element 18, and a sealing ring D19; The mounting plate 16 is connected to the lower housing 15 by screws A17 and a seal is formed by sealing ring D19, which ensures external sealing. The throttling element 18 is installed in the slot of the mounting plate 16, ensuring that the throttling element 18 is in close contact with the inner wall of the lower housing 15 and forms a seal with the help of inlet pressure. This structure can realize the function of adjusting the flow rate of the regulating channel by replacing the throttling element 18.

[0010] The solenoid valve assembly 100 and the channel assembly 200 are connected by four screws B20. The connection is sealed with a sealing ring E21 and supported by springs A8 and B22 so that the main valve 9 is in the "open" position in the initial state.

[0011] Furthermore, when power is supplied to the electrical socket 14, the armature 6 moves downward under the electromagnetic force generated by the coil assembly 5, overcoming the elastic force of the spring A8, and causing the secondary valve 7 to close the exhaust port of the main valve 9. When the product inlet is vented, a pressure chamber is established above the main valve 9, forming downward pressure, which, together with the armature 6, drives the main valve 9 downward, closing the main channel and allowing only the regulating channel to operate. At this time, the pressure is regulated by replacing the throttling element 18.

[0012] Furthermore, when the power supply socket 14 is de-energized, the armature 6 and the main valve 9 disengage, and the upper part of the main valve 9 quickly descends from the pressure equalization groove of the main valve 9; the armature 6 and the main valve 9 move upward under the elastic force of the spring A8 and the spring B22, the product is fully open, and the main channel and the regulating channel work simultaneously.

[0013] Furthermore, such as Figure 2 As shown, the channel assembly 200 has two flow channels.

[0014] Furthermore, the two flow channels include a main channel and a regulating channel. High and low flow rates are adjusted by controlling the opening and closing of the main channel. The flow rate of the regulating channel is adjusted by replacing the throttling element 18 in the channel assembly 200. Furthermore, such as Figure 4 As shown, the iron core support 4, coil assembly 5, armature 6, and auxiliary valve 7 adopt a mutually limiting structure to restrict each other's circumferential rotation.

[0015] After installing the coil assembly 5, armature 6, and auxiliary valve 7, use the end cap 1 to fix and tighten the iron core support 4 to ensure that the threaded connection between the armature 6 and the auxiliary valve 7 will not loosen.

[0016] Furthermore, such as Figure 5 As shown, the throttling element 18 can be designed as multiple throttling elements 18 of different sizes (0~φ) mm according to the pipe diameter φ. The throttling element 18 is fixed by the mounting plate 16, and an external seal is ensured by a sealing ring D19. The mounting plate 16 is then connected and fixed to the lower housing 15 using screws A17. By replacing the throttling element 18 with different sizes, the flow rate can be adjusted.

[0017] The beneficial effects of this application are as follows: The above-mentioned utility model has a compact structure and stable and reliable quality, and can meet the needs of flow rate adjustment under high pressure and low suction conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall appearance and structure; Figure 2 Diagram of the flow channel and internal structure; Figure 3 This is a structural diagram of a solenoid valve assembly; Figure 4 This is a diagram of a threaded self-locking structure. Figure 5 Here is a structural diagram of the channel component; Figure 6 Schematic diagram showing the mutual limiting relationship between the main valve and the baffle plane; Figure 7 Schematic diagram of the limiting position of the auxiliary valve and the baffle ( Figure 6 (Center C). Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be described in more detail below with reference to the embodiments of this utility model. In the examples, the same or similar reference numerals denote the same or similar components or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments described below with reference to the embodiments are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to their specific implementation.

[0020] The utility model features of this utility model are: Key features of this utility model: The channel assembly of this utility model is provided with a main channel and an adjustment channel. The solenoid valve assembly controls the opening and closing of the main channel. The adjustment channel is provided with a throttling element, and the flow rate can be adjusted by replacing the throttling element with a different specification.

[0021] Secondary utility model point 1: The throttling element of this utility model is provided with a mounting plate, which realizes the fixing and replacement of the throttling element, ensuring that the throttling element can work stably and reliably, and also ensuring the reuse of the throttling element.

[0022] Secondary utility model point 2: This utility model is designed with a main valve and a secondary valve, and the main valve has a pressure equalization hole in its center. The purpose is twofold: firstly, when the secondary valve closes, a pressure chamber is formed above the main valve, establishing a downward pressure above the main valve; secondly, when the secondary valve opens, the pressure above the main valve quickly balances with the downward pressure through the pressure equalization hole in the center of the main valve, ensuring reliable opening of the main valve. This utility model can ensure the solenoid valve switching function is achieved with relatively small electromagnetic forces.

[0023] Secondary utility model point 3: This utility model adopts a threaded self-locking structure. The auxiliary valve, armature, armature support and coil assembly adopt a mutual limiting structure. After installation, the mounting seat ensures that the armature will not rotate, thereby achieving the purpose of threaded self-locking and preventing loosening; Secondary utility model point 4: The armature of this utility model has pressure relief holes (slots) in the middle and on the side to ensure that the moving iron core can operate quickly and reliably.

[0024] Technical effects of this utility model: The above-mentioned utility model has a compact structure and stable and reliable quality, and can meet the needs of flow rate adjustment under high pressure and low suction conditions.

[0025] refer to Figure 1 , Figure 2 The solenoid valve structure for regulating flow includes: solenoid valve assembly 100, channel assembly 200, spring B22, sealing ring E21, and screw B20.

[0026] Among them, such as Figure 2 As shown, the solenoid valve assembly 100 and the channel assembly 200 are connected by four screws B20, and a sealing ring E21 is used in the middle to seal against external leakage. The solenoid valve assembly 100 is kept in a stable open state by a spring B22.

[0027] In some embodiments, such as Figure 3 As shown, the solenoid valve assembly 100 may include: end cap 1, sealing ring A2, sealing ring B3, iron core support 4, coil assembly 5, armature 6, auxiliary valve 7, spring A8, main valve 9, retaining ring 10, baffle 11, sealing ring C12, upper housing 13, and electrical socket 14. The coil assembly 5 is installed in the inner cavity of the upper housing 13, and a seal is formed below by the sealing ring C12; the iron core support 4, coil assembly 5, armature 6, auxiliary valve 7, spring A8, main valve 9, retaining ring 10, and baffle 11 are all installed in the inner cavity of the coil assembly 5 with clearance fit. like Figure 4 As shown, the armature 6 and the auxiliary valve 7 are connected by threads; the retaining ring 10 is installed in the groove of the main valve 9, restricting the baffle 11 and the auxiliary valve 7 within the main valve 9 to form a whole; the retaining ring 10, the baffle 11, the auxiliary valve 7 and the main valve 9 are installed from below the coil assembly 5, and the armature 6 and the spring A8 are installed from above the coil assembly 5. Tightening the armature 6 ensures that it is installed in place. The intermediate shaft of the auxiliary valve 7, the intermediate hole of the coil assembly 5 and the intermediate hole of the baffle 11 are all triangular structures that prevent them from rotating. The outer side of the baffle 11 and the inner side of the main valve 9 have planar structures that mutually limit each other to prevent rotation. The iron core support 4 is installed from above the coil assembly 5 and fits with the coil assembly 5 with a clearance. It uses a groove structure to fit with the armature 6. The damping force of the sealing ring B3 and the end cap 1 ensure that the armature does not rotate; the end cap 1 is threaded to the upper housing 13 to press the iron core support 4 tightly; the gap between the upper housing 13 and the coil assembly 5 is filled with insulating rubber.

[0028] In some embodiments, such as Figure 5As shown, the channel assembly 200 includes a lower housing 15, a mounting plate 16, a screw A17, a throttling element 18, and a sealing ring D19.

[0029] The mounting plate 16 is connected to the lower housing 15 by screws A17 and a seal is formed by sealing ring D19, which ensures external sealing. The throttling element 18 is installed in the slot of the mounting plate 16, ensuring that the throttling element 18 is in close contact with the inner wall of the lower housing 15 and forms a seal with the help of inlet pressure. This structure can realize the function of adjusting the flow rate of the regulating channel by replacing the throttling element 18.

[0030] This invention proposes a solenoid valve structure capable of adjusting flow rate. The structure may include the aforementioned solenoid valve assembly 100 and channel assembly 200. The solenoid valve assembly 100 has a self-locking threaded connection structure internally, and the channel assembly 200 includes a replaceable throttling element and a mounting plate.

[0031] This invention proposes a method for regulating flow rate and a method for thread self-locking.

[0032] The end cap 1 is provided with a threaded section, which forms a threaded connection with the upper housing 13, pressing the coil assembly 5 and the iron core support 4; The upper housing 13 is provided with a sealing groove, and sealing rings A2 and C12 are installed to form a sealing structure with the coil assembly 5; The iron core support 4 is provided with a sealing groove, and the sealing ring B3 is installed to form a sealing structure with the coil assembly 5. The iron core support 4 is provided with a limit groove that cooperates with the armature 4 to restrict the circumferential rotation of the armature 4, which can cause the threads to loosen. The coil assembly 5 is provided with three through cavities. The upper through cavity is in clearance fit with the armature 4, the middle through cavity is in clearance fit with the auxiliary valve 7 using a triangular structure, and the lower through cavity is in clearance fit with the main valve 9, so as to ensure that the armature 5, the auxiliary valve 7 and the main valve 9 can move flexibly. The auxiliary valve 4 is equipped with a triangular structure, which ensures guidance and prevents the armature 4 from loosening due to the rotation of the auxiliary valve 7; The main valve 9 is equipped with a central through hole, which serves as a pressure channel when the product is closed, balancing the pressure below the main valve 9 to ensure that the product can be opened and closed under small electromagnetic forces. The mounting plate 16 is provided with a sealing groove, and the sealing ring D19 is installed to form a sealing structure with the lower housing 15. It is also provided with a slot as a fixing element for the throttling element 18. The throttling element 18 can be designed with different specifications of pipe diameter as needed to achieve flow regulation.

[0033] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," and "outer," etc., used in this application description to indicate relative direction or positional relationship are used only to indicate relative orientation or positional relationship, and do not imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore should not be construed as a limitation on this application. The terms "first," "second," "third," and similar terms used in this application description are used only for descriptive purposes to distinguish different components, and should not be construed as indicating or implying relative importance. The terms "a," "one," or "the," etc., used in this application description should not be construed as an absolute limitation on quantity, but should be construed as indicating the existence of at least one. The terms "including," "comprising," etc., used in this application description mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0034] Furthermore, it should be noted that, unless otherwise explicitly specified and limited, terms such as “installation,” “connection,” and “linkage” used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0035] The above description is merely a specific embodiment of this utility model and is not intended to limit this utility model. Within the spirit and principles of this utility model, any person skilled in the art may use the above-disclosed technical content to make changes or modifications to equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model, as well as any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. A solenoid valve with flow regulation function, characterized in that, The system includes a solenoid valve assembly and a channel assembly. The solenoid valve assembly includes: an end cap, sealing ring A, sealing ring B, an iron core support, a coil assembly, an armature, a secondary valve, spring A, a main valve, a retaining ring, a baffle, a sealing ring C, an upper housing, and an electrical socket. The coil assembly is installed inside the upper housing cavity, with a seal formed below by the sealing ring C. The iron core support, coil assembly, armature, secondary valve, spring A, main valve, retaining ring, and baffle are sequentially installed inside the coil assembly cavity, all with clearance fits. The armature and secondary valve are threaded together. The retaining ring is installed in the groove of the main valve, confining the baffle and secondary valve within the main valve to form a single unit. The retaining ring, baffle, secondary valve, and main valve are installed as a whole from below the coil assembly. A is installed from above the coil assembly. Tightening the armature ensures it is properly installed. The intermediate shaft of the secondary valve, the intermediate hole of the coil assembly, and the intermediate hole of the baffle are all triangular structures that prevent rotation between them. The outer circumference of the baffle and the inner side of the main valve have planar structures that mutually limit rotation. The iron core support is installed from above the coil assembly and fits with it with a clearance. It uses a groove structure to engage with the armature. The damping force of the sealing ring B and the end cap ensure the armature does not rotate. The end cap is threaded to the upper housing, pressing the iron core support tightly. The gap between the upper housing and the coil assembly is filled with insulating adhesive, and the upper housing and the end cap are sealed with sealing ring A. The electrical socket is used to supply power to the coil assembly. The channel assembly includes a lower housing, a mounting plate, screw A, and a throttling element sealing ring D. The mounting plate is connected to the lower housing by screw A and forms a seal through the sealing ring D. The throttling element is installed in the slot of the mounting plate to ensure that the throttling element is in close contact with the inner wall of the lower housing and forms a seal with the help of inlet pressure. The flow rate of the channel can be adjusted by replacing the throttling element. The solenoid valve assembly and the channel assembly are connected by a screw B. The connection is sealed with a sealing ring E and supported by springs A and B so that the main valve is in the "open" position in the initial state.

2. The solenoid valve as described in claim 1, characterized in that, The channel assembly has two flow channels.

3. The solenoid valve as described in claim 1, characterized in that, The two flow channels include a main channel and a regulating channel. The flow rate can be adjusted to high or low by controlling the opening and closing of the main channel.

4. The solenoid valve as described in claim 1, characterized in that, The iron core support, coil assembly, armature, and auxiliary valve adopt a mutually limiting structure to restrict each other's circumferential rotation.

5. The solenoid valve as described in claim 1, characterized in that, The iron core support is equipped with a limit groove that engages with the armature, restricting the circumferential rotation of the armature and causing the threads to loosen.

6. The solenoid valve as described in claim 1, characterized in that, The coil assembly has three passages: the upper passage is fitted with the armature with a clearance, the middle passage is fitted with the auxiliary valve with a triangular structure with a clearance, and the lower passage is fitted with the main valve with a clearance, to ensure that the armature, auxiliary valve and main valve move flexibly.

7. The solenoid valve as described in claim 1, characterized in that, The secondary valve has a triangular structure, which ensures guidance and prevents the armature threads from loosening due to the rotation of the secondary valve.

8. The solenoid valve as described in claim 1, characterized in that, The main valve is equipped with a central through hole, which serves as a pressure channel when the product is closed, balancing the pressure below the main valve to ensure that the product can be opened and closed with a small electromagnetic force.

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