Self-locking type two-position four-way electromagnetic valve structure with in-place signal

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to a self-locking type two-position four-way electromagnetic valve structure with an in-place signal. Comprising a switch shell, a switch cover, a microswitch, a coil rack, a coil A, an ejector rod, a coil B, a static iron core, an O-shaped ring A, a sealing ring, an upper valve seat, an O-shaped ring B, a check block, a spring, a valve seat, a lower valve, a check ring, an O-shaped ring C, an O-shaped ring D, an O-shaped ring E, magnetic steel, an armature, a valve shell and a shell. According to the structure, two positions, four channels and two groups of runners can be realized, the problem of asynchronous switching of the two runners can be effectively solved, the runner where the current product is located can be clearly identified, and the electromagnetic valve can be powered on when only the runners are switched during operation and can be powered off for self-locking after switching.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and specifically to a self-locking two-position four-way solenoid valve structure with a position signal. Background Technology

[0002] Solenoid valves are basic industrial equipment, primarily used for switching on / off states and channels for liquids and gases. They are commonly found in two-position two-way, two-position three-way, and two-position four-way configurations. This utility model describes a self-locking two-position four-way solenoid valve with a position signal.

[0003] The main problem this invention addresses is that a certain product has two flow channels, each corresponding to a specific operating state; one channel is active while the other needs to be closed. The previous solution used two two-position, two-way solenoid valves for separate control. This approach has five main problems: First, because of the different response times of the two solenoid valves, there is a time difference between the on / off states of the two flow channels, causing abnormalities during product switching. Second, if either solenoid valve fails, the entire product will malfunction, resulting in a high overall failure rate. Third, installing two solenoid valves requires significant space, placing high demands on the product's size and weight, especially when using self-locking solenoid valves. Fourth, the product cannot determine which flow channel it is currently in. Fifth, the solenoid valves require prolonged operation, leading to coil temperature and angle fluctuations, which can easily cause malfunctions. Therefore, a self-locking two-position, four-way solenoid valve with a position signal is needed. Utility Model Content

[0004] Utility Model Purpose

[0005] A solenoid valve control structure with a position signal, two positions, one position corresponding to two channels, four channels that do not interfere with each other, and no need for long-term power supply after switching is proposed.

[0006] Technical solution

[0007] A self-locking two-position four-way solenoid valve structure with a positioning signal includes a switch housing, a switch cover, a micro switch, a coil frame, a coil A, a push rod, a coil B, a stationary iron core, an O-ring A, a sealing ring, an upper valve seat, an O-ring B, a stop block, a spring, a valve seat, a lower valve, a stop ring, an O-ring C, an O-ring D, an O-ring E, a magnet, an armature, a valve housing, and a housing.

[0008] Coil A rotates clockwise (with...) Figure 1(Looking upwards), coil B is wound counterclockwise around the upper and lower sides of the coil frame to form a coil assembly, which is then encased in a housing. A push rod is press-fitted onto the armature to form an armature assembly. The armature assembly is placed inside the coil frame, and the push rod passes through the through-hole at the top of the coil frame. The small end of the stationary iron core is placed inside the coil frame. O-ring A and the sealing ring are placed in the grooves of the stationary iron core. The large end face of the valve housing is fitted against the coil frame with the stationary iron core, O-ring A, and sealing ring assembled. Screws are used to connect the housing to the valve housing. The thin rod of the upper valve seat passes through the large end face of the valve housing, and also through O-ring A, the sealing ring, and the stationary iron core. The vulcanized valve on the large end face of the upper valve seat contacts the valve in the valve housing. O-ring D is mounted on the stop block for sealing between the stop block and the valve housing. O-ring B is mounted on the stop block for sealing between the stop block and the lower valve. The stop block is fixed to the valve housing by a retaining ring. The long rod of the lower valve passes through the stop block, which is fitted with O-rings B and D. A spring is mounted between the valve seat and the lower valve. The valve seat is threaded onto the valve housing. The micro switch and switch cover are mounted on the switch housing by screws, and the switch housing is mounted on the housing by screws.

[0009] Furthermore, the micro switch is a spring-loaded double-circuit reversing mechanism switch with two working states;

[0010] Furthermore, the channel A on the valve seat has L holes, where L is an integer greater than or equal to 1;

[0011] Furthermore, the channel B on the valve housing consists of m holes, where m is an integer greater than or equal to 1;

[0012] Furthermore, the channel C on the valve housing consists of n holes, where n is an integer greater than or equal to 1;

[0013] Furthermore, the channel D on the valve housing consists of P holes, where P is an integer greater than or equal to 1;

[0014] Furthermore, the movement of the upper valve seat and the lower valve is greater than or equal to 1 mm;

[0015] Furthermore, its control logic is as follows: when channel A and channel B are connected, channel C and channel D are disconnected, and the gas connected to channel A and channel B cannot enter channel C and channel D; when channel C and channel D are connected, channel A and channel B are disconnected, and channel C and channel D cannot enter channel A and channel B.

[0016] Furthermore, rubber materials such as FM-2D are vulcanized onto the upper valve seat and the lower valve to ensure the sealing between channel A and channel B, and between channel C and channel D.

[0017] The beneficial effects of this application are as follows:

[0018] The above-mentioned utility model can realize two positions, four channels and two sets of flow channels, which can effectively solve the problem of asynchronous switching between the two flow channels, clearly identify the flow channel in which the current product is located, and the solenoid valve can be operated in advance, only needing to be energized when switching flow channels, and can be de-energized and self-locking after switching. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] The components include: switch housing (1), switch cover (2), micro switch (3), coil frame (4), coil A (5), push rod (6), coil B (7), stationary iron core (8), O-ring A (9), sealing ring (10), upper valve seat (11), O-ring B (12), stop block (13), spring (14), valve seat (15), lower valve (16), stop ring (17), O-ring C (18), O-ring D (19), O-ring E (20), magnet (21), armature (22), valve housing (23), and housing (24).

[0021] Figure 2 This is a schematic diagram showing the connection between channel A and channel B;

[0022] Figure 3 This is a schematic diagram showing the connection between channel C and channel D. Detailed Implementation

[0023] 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.

[0024] Secondary utility model point 1: It can report the flow channel where the solenoid valve passage is located in real time through a micro switch.

[0025] Secondary utility model point 2: It has two positions, each of which corresponds to a set of flow channels. The two channels are not interconnected and can be switched between each other.

[0026] Secondary utility model point 3: The push rod and the armature are fixedly assembled together. The push rod and the micro switch can report the position of the armature in real time, which can report which flow channel the solenoid valve is using.

[0027] Secondary utility model point 4: Two O-rings are assembled on the stop block. After the stop block is assembled on the lower valve, it can guide the movement of the lower valve and also isolate the air passage between the lower valve and the upper valve, so that the solenoid valve forms two flow channels that do not interfere with each other.

[0028] Secondary utility model point 5: The seal between the upper valve and the valve housing is achieved by using a spring preload to compress the lower valve, which in turn compresses the upper valve to seal. The spring preload can be adjusted by the relative position between the valve seat and the housing.

[0029] Secondary utility model point 6: The seal between the lower valve and the valve housing is achieved by the armature moving downward as shown in the figure. The armature strikes the upper valve, causing the lower valve to move downward, so that the vulcanized surface of the lower valve seals with the valve seat.

[0030] Secondary utility model point 7: The two sets of coil windings are different, so that the armature moves in different directions to overcome the magnet. After the armature moves, when the coil is de-energized, the armature cannot overcome the magnetic force generated by the magnet, so the armature maintains the position after the previous energization, thus forming a self-locking mechanism.

[0031] Secondary utility model point 8: Three channels are integrated into the valve housing, and one channel is integrated into the valve seat, effectively improving the product's space utilization rate.

[0032] Figure 1 This is a schematic diagram of a self-locking two-position four-way solenoid valve with a position signal according to an embodiment of the present invention.

[0033] Coil A(5) rotates clockwise (with) Figure 1Looking from below), coil B (7) is wound counterclockwise around the upper and lower sides of coil frame (4), and the coil frame (4) with the coil wound is wrapped with housing (24). The push rod (6) is interference-fitted onto armature (22), and the fitted push rod (6) and armature assembly are placed inside coil frame (4), and the push rod (6) passes through the through hole at the top of coil frame (4). The small end of stationary iron core (8) is placed inside coil frame (4), and O-ring A (9) and sealing ring (10) are placed in the groove of stationary iron core (8). The large end face of valve housing (23) is fitted with coil frame (4) with stationary iron core (8), O-ring A (9) and sealing ring (10) assembled. Screws are used to connect housing (24) to valve housing (23). The thin rod of upper valve seat (11) passes through the large end face of valve housing (23), and passes through O-ring A (9), sealing ring (10) and stationary iron core (8). The vulcanized valve on the large end face of the upper valve seat (11) connects with the valve of the valve housing (23). O-rings B (12) and D (19) are mounted on the stop block (13), which is fixed to the valve housing (23) by a retaining ring (17). The long rod of the lower valve (16) passes through the stop block (13) on which O-rings B (12) and D (19) are mounted. A spring (14) is mounted on...

[0034] The valve seat (15) and the lower valve (16) are connected, and the valve seat (15) is fixed to the valve housing (23) by threads. The micro switch (3) and the switch cover (2) are mounted on the switch housing (1) by screws, and the switch housing (1) is mounted on the housing (24) by screws.

[0035] The long rods of the upper and lower valves (16) of the O-rings B (12), D (19), and the stop (13) interact to ensure a seal at this point, isolating the F and E cavities from each other and preventing interference. This ensures that channel A can only connect with channel B, forming one flow path, and channel C connects with channel D, forming another flow path.

[0036] Figure 1 The push rod (6) shown is interference-fitted onto the armature (22). When the coil A (5) is energized, the armature (22) is subjected to an upward force as shown in the figure. At this time, the spring (14) moves the lower valve (16) upward under the action of the preload, and the lower valve (16) separates from the valve seat (15). Figure 2 As shown, channel A and channel B are connected. Figure 2As shown by the dotted line. At this time, the upper valve seat (11) moves upward under the thrust transmitted from the spring (14) to the lower valve (16). When the vulcanized valve on the large end face of the upper valve seat (11) contacts the valve of the valve housing (23), it seals the area under the elastic force of the spring (14). This isolates the C and D channels, preventing them from connecting. At the same time, as the push rod (6) moves upward, the micro switch (3) button will be pressed. At this time, the micro switch can be reported as connected, that is, the product switching is in the open state (the default state is open when the A and B channels are connected, and closed when the C and D channels are connected).

[0037] After switching, coil A (5) can be de-energized. Due to the action of permanent magnet (21) on the armature (22), the inertia of the armature (22) itself cannot overcome the magnetic force generated by the magnet (21), keeping it in place and forming a self-locking function. This eliminates the need for the solenoid valve to be energized for a long time, reduces the heat generated by the coil, and thus reduces the failure rate of the solenoid valve.

[0038] When coil B (7) is energized, armature (22) is subjected to a downward force as shown in the figure. At this time, armature (22) moves downward against the action of permanent magnet (21). This movement also overcomes the force of spring (14) acting on lower valve (16) and transmitting it to upper valve seat (11), causing the vulcanized valve on the large end face of upper valve seat (11) to separate from the valve on valve housing (23), so that C channel and D channel are connected.

[0039] The lower valve (16) is subjected to the downward force of the armature (22), causing the vulcanized valve of the lower valve (16) to contact the valve seat (15) and ensure a seal at that point, thus isolating channel A from channel B and preventing connection. Figure 3 As shown by the dotted line. At the same time, as the top rod (6) moves downward, the micro switch (3) button will be released. At this time, the micro switch can be reported as open, that is, the product is switched to the off state (the default state is open when channels A and B are connected, and closed when channels C and D are connected).

[0040] After switching, coil B(7) can be de-energized. Due to the action of permanent magnet (21) on armature (22), the inertia of armature (22) itself cannot overcome the magnetic force generated by magnet (21), keeping it in place and forming a self-locking function. This eliminates the need for the solenoid valve to be energized for a long time, reduces the heat generated by the coil, and thus reduces the failure rate of the solenoid valve.

[0041] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein. The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this invention. It should be understood that the above descriptions are merely specific embodiments of this invention and are not intended to limit this invention. Within the spirit and principles of this invention, any person skilled in the art may modify or alter the disclosed technical content to create equivalent embodiments applicable to other fields. However, any simple modifications, equivalent changes, alterations, modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this invention without departing from the content of the technical solution of this invention should be included within the protection scope of this invention.

Claims

1. A self-locking two-position four-way solenoid valve structure with a position signal, characterized in that, Includes switch housing, switch cover, micro switch, coil frame, coil A, push rod, coil B, stationary iron core, O-ring A, sealing ring, upper valve seat, O-ring B, stop block, spring, valve seat, lower valve, retaining ring, O-ring C, O-ring D, O-ring E, magnet, armature, valve housing, and housing, etc. Coil A is wound clockwise and coil B counterclockwise on the upper and lower sides of the coil frame to form a coil assembly. The coil assembly is then encased in a housing, and a push rod is fitted onto the armature to form an armature assembly. The armature assembly is placed inside the coil frame, with the push rod passing through the through-hole at the top of the coil frame. The small end of the stationary iron core is placed inside the coil frame, and O-ring A and a sealing ring are placed in the grooves of the stationary iron core. The large end face of the valve housing is fitted against the coil frame with the stationary iron core, O-ring A, and sealing ring assembled on it. Screws are used to connect the housing to the valve housing. A thin rod passes through the large end face of the valve housing and through… The vulcanized valve on the large end face of the valve seat, passing through O-ring A, sealing ring, and stationary iron core, contacts the valve in the valve housing. O-ring D is installed on the stop block for sealing between the stop block and the valve housing. O-ring B is installed on the stop block for sealing between the stop block and the lower valve. The stop block is fixed to the valve housing by a retaining ring. The long rod of the lower valve passes through the stop block with O-rings B and D installed. The spring is installed between the valve seat and the lower valve. The valve seat is fixed to the valve housing by threads. The micro switch and switch cover are installed on the switch housing by screws. The switch housing is installed on the housing by screws.

2. The structure as described in claim 1, characterized in that, The micro switch is a spring-loaded double-circuit reversing mechanism switch with two working states.

3. The structure as described in claim 2, characterized in that, The valve seat has L channels A, where L is an integer greater than or equal to 1.

4. The structure as described in claim 3, characterized in that, The valve housing has m channels B, where m is an integer greater than or equal to 1.

5. The structure as described in claim 4, characterized in that, The valve housing has a channel C consisting of n holes, where n is an integer greater than or equal to 1.

6. The structure as described in claim 5, characterized in that, The valve housing has D channels consisting of P holes, where P is an integer greater than or equal to 1.

7. The structure as described in claim 6, characterized in that, The movement of the upper valve seat and the lower valve is greater than or equal to 1 mm.

8. The structure as described in claim 7, characterized in that, Its control logic is as follows: when channel A and channel B are connected, channel C and channel D are disconnected, and the gas connected between channel A and channel B cannot enter channel C and channel D. When channel C and channel D are connected, channel A and channel B are disconnected, and channel C and channel D cannot enter channel A and channel B.

9. The structure as described in claim 8, characterized in that, Rubber materials such as FM-2D are vulcanized onto the upper valve seat and the lower valve to ensure the sealing between channel A and channel B, and between channel C and channel D.

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