A multifunctional solenoid valve

Abstract

The invention discloses a multifunctional solenoid valve, which relates to the technical field of solenoid valves and comprises: a valve body, a valve cover, a diaphragm assembly between the valve body and the valve cover, and an electromagnetic device assembly arranged on the upper part of the valve cover; the valve body comprises a valve inlet, a valve outlet and a valve control port, the electromagnetic device assembly is used to control the movement of the diaphragm assembly, and the diaphragm assembly is used to control the opening and closing of the valve control port; at least one sewage discharge rotor assembly is arranged on the diaphragm assembly, the sewage discharge rotor assembly can be used to connect the valve inlet with the upper cavity of the diaphragm, and the sewage discharge rotor assembly can also be used to destroy or separate impurities in the fluid medium; the invention can ensure that the solenoid valve can be used normally even in the presence of tiny impurities through the design of the sewage discharge rotor assembly; the connecting block is connected in a rigid connection manner, which can ensure that the diaphragm assembly moves synchronously with the movable iron core, and the operation of the solenoid valve is more accurate; the safety of use is ensured by the setting of a manual control device.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valves, in particular to a multifunctional solenoid valve. Background Art

[0002] The solenoid valve is an actuator in the automatic control system, which is used to control the opening and closing of the fluid and change the direction of the fluid. The solenoid valve structure of current technology is often relatively simple, and can only play the role of opening and closing. When the degree of automation is relatively high, only one solenoid valve can achieve one working condition. Then, under the conditions of multiple working conditions, more solenoid valves of different types and different requirements can be installed to meet the requirements; the problems existing in the design of solenoid valves in the prior art are: the input medium must be clean, if small particles or small impurities enter the valve cavity, the solenoid valve switch will fail; and the solenoid valves in the prior art often consider the pressure and flow rate but ignore the flow resistance of the fluid. When the industrial fluid solenoid valve is actually used, the liquid flow resistance must be considered, and the liquid flow path must be smooth. The solenoid valve designed and developed in this way will reduce the impact on the internal parts and the impact on the pipeline. To put it bluntly, the water hammer phenomenon will also disappear.

[0003] At the same time, the diaphragm and diaphragm assembly in the prior art solenoid valve is a very critical component. Poor diaphragm quality affects the service life, incorrect diaphragm riveting process, high and low pressure leakage, etc., will affect the service life of the product;

[0004] For example, a knife-gate type high-temperature and high-pressure zero-leakage solenoid valve disclosed in Chinese utility model patent CN206299871U comprises a solenoid valve outer shell, a hexagonal screw is arranged on the top of the solenoid valve outer shell, a spring washer is arranged below the hexagonal screw, a flat washer is arranged below the spring washer, a nameplate is arranged below the flat washer, a static iron core is arranged on the upper part of the interior of the solenoid valve outer shell, a solenoid valve cover is arranged on the outside of the static iron core, a solenoid valve core is arranged below the solenoid valve cover, and electromagnets are arranged on both sides of the solenoid valve cover, a solenoid valve body is arranged below the solenoid valve core, and a gate is arranged at the middle position of the interior of the solenoid valve body; the solenoid valve of this structure has the problem of being relatively simple in structure and can only play the role of opening and closing, and cannot meet diverse usage requirements. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The present invention is aimed at the above defects existing in the prior art and proposes a multifunctional solenoid valve, which solves the problem that the existing solenoid valve has a relatively simple structure and has high requirements on the cleanliness of the fluid medium, and also solves the problem that the existing solenoid valve has a poor control effect on the diaphragm assembly.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the present invention provides a multifunctional solenoid valve, comprising: a valve body, a valve cover, a diaphragm assembly located between the valve body and the valve cover, and an electromagnetic device assembly arranged on the upper part of the valve cover;

[0009] The valve body includes a valve inlet, a valve outlet and a valve control port, the electromagnetic device assembly is used to control the movement of the diaphragm assembly, and the diaphragm assembly is used to control the opening and closing of the valve control port;

[0010] At least one sewage discharge rotor assembly is arranged on the diaphragm assembly, and the sewage discharge rotor assembly can be used to connect the valve inlet with the upper cavity of the diaphragm, and the sewage discharge rotor assembly can also be used to destroy or separate impurities in the fluid medium.

[0011] Among them, the electromagnetic device assembly includes an iron core spring, a movable iron core, a magnetic isolation tube and an electromagnetic coil; the diaphragm assembly also includes a diaphragm fixing device and a diaphragm, the sewage discharge rotor assembly is arranged on the diaphragm, the diaphragm fixing device includes a guide valve port, a diaphragm pressure plate and a diaphragm bottom plate arranged in sequence, and the diaphragm is fixed between the diaphragm pressure plate and the diaphragm bottom plate.

[0012] Among them, a sealing member is provided at the bottom of the movable iron core, and the movable iron core is clamped with the pilot valve port through a connecting block. When the electromagnetic coil is not energized, the sealing member seals the pilot valve port under the elastic force of the iron core spring; when the electromagnetic coil is energized, under the action of the electromagnetic force, the movable iron core compresses the iron core spring to move upward, and at the same time drives the sealing member to move upward and open the pilot valve port, so that the upper cavity of the diaphragm is depressurized, and then drives the pilot valve port upward through the connecting block, thereby driving the diaphragm assembly to move upward to open the valve control port, and the fluid medium can flow out from the valve outlet.

[0013] Wherein, corresponding protruding ends are arranged at the bottom of the movable iron core and the top of the pilot valve port, and the movable iron core and the pilot valve port are clamped with a connecting block through the protruding ends, and the connecting block is made of a rigid material.

[0014] The sewage discharge rotor assembly comprises a sewage discharge water inlet sleeve and a rotor, and the rotor is movably sleeved in the sewage discharge water inlet sleeve.

[0015] Among them, the multifunctional solenoid valve also includes a manual control device arranged at the bottom of the valve body, the manual control device includes a push rod, a push pin, a valve bottom inlay kit and a rotating handle, the valve bottom inlay kit is arranged at the bottom of the valve body, the push rod is passed through the valve bottom inlay kit and extends into the inner cavity of the valve body, the push pin is arranged at the end of the push rod, and the position of the push rod can be adjusted by rotating the handle so that the push pin can abut and lift the seal to open the pilot valve port.

[0016] The valve body side is also provided with at least one reserved installation hole, which is used to install a detection device, including a pressure sensor, a medium concentration meter, an electronic flow meter, or a pressure switch.

[0017] The surface of the diaphragm is provided with a nano coating, and a filter screen is also provided at the valve inlet.

[0018] The diaphragm assembly is fixed by rotation riveting.

[0019] Wherein, a large-flux inlet flow channel is provided at the valve inlet, and the large-flux inlet flow channel extends from the lowest position point M of the valve inlet to the lowest position point N on the side of the outer wall of the valve control port.

[0020] 3. Beneficial Effects

[0021] Compared with the prior art, the present invention effectively solves the problem that impurities easily block the water inlet hole of the diaphragm of the prior art solenoid valve, resulting in the solenoid valve not being able to work normally, by designing the sewage discharge rotor assembly, and can ensure that the solenoid valve can be used normally even when there are tiny impurities.

[0022] At the same time, the diaphragm assembly is riveted by rotary riveting, which will avoid the phenomenon of inconsistent riveting pressure due to artificial force, and the service life will be longer;

[0023] Furthermore, the connection block is connected in a rigid connection manner, which can ensure the synchronous movement of the diaphragm assembly with the movable iron core, and the operation of the solenoid valve is more accurate;

[0024] By setting the manual control device, the solenoid valve can be manually operated in an emergency without cutting off the power, thus ensuring the safety of use; at the same time, the detection device can be installed through the reserved installation hole, which saves time and effort and is convenient to use; the design of the large-flow inlet flow channel can ensure that the flow rate of the solenoid valve meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A cross-sectional view of the sealing state of the solenoid valve of the present invention;

[0026] Figure 2 A cross-sectional view of the solenoid valve of the present invention in an open state;

[0027] Figure 3 A schematic diagram of a solenoid valve of the present invention equipped with a detection device;

[0028] Figure 4 It is a side view of the solenoid valve of the present invention;

[0029] Figure 5 It is an exploded view of the movable iron core and diaphragm assembly of the present invention;

[0030] Figure 6 Schematic diagram of the sealing state of Example 2 of the present invention;

[0031] Figure 7 It is a schematic diagram of the top-open state of Example 2 of the present invention;

[0032] Figure 8 A cross-sectional view of a valve body of a prior art design described in Example 4 of the present invention;

[0033] Fig. 9 A schematic diagram of the force of the fluid medium of the prior art design described in Example 4 of the present invention;

[0034] Fig.10 A top view of a valve body of a prior art design as described in Example 4 of the present invention;

[0035] Fig.11 A cross-sectional view of a valve body of the present invention in Embodiment 4 of the present invention;

[0036] Fig.12 This is a schematic diagram of the inlet cross section of the present invention in Example 4 of the present invention;

[0037] Fig.13 A top view of the valve body of the present invention in Embodiment 4 of the present invention;

[0038] Fig.14 A schematic diagram of riveting of a diaphragm assembly of the present invention;

[0039] In the figure: 1 is the valve body; 2 is the diaphragm assembly; 3 is the valve cover; 4 is the connecting block; 5 is the electromagnetic device assembly; 6 is the manual control device; 7 is the mounting hole; 8 is the upper cavity of the diaphragm; 9 is the detection device; 10 is the extension end; 11 is the filter screen; 12 is the valve inlet; 13 is the valve outlet; 14 is the valve control port; 15 is the inlet section; 16 is the iron core spring; 17 is the movable iron core; 18 is the magnetic isolation tube; 19 is the electromagnetic coil; 20 is the diaphragm fixing device; 21 is the pilot valve port; 22 is the diaphragm pressure plate; 23 is the diaphragm bottom plate; 24 is the diaphragm; 25 is the sewage rotor assembly; 26 is the sewage water inlet jacket; 27 is the rotor; 29 is the large-flux inlet flow channel; 30 is the sealing member; 31 is the ejector rod; 32 is the ejector pin; 33 is the valve bottom inlay kit; 34 is the rotating handle. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] Embodiment 1:

[0042] A multifunctional solenoid valve according to an embodiment of the present invention, Figure 1 to Figure 5 As shown, it comprises: a valve body 1, a valve cover 3, a diaphragm assembly 2 located between the valve body 1 and the valve cover 3, and an electromagnetic device assembly 5 arranged on the upper part of the valve cover 3;

[0043] The valve body 1 includes a valve inlet 12, a valve outlet 13 and a valve control port 14, and the electromagnetic device assembly 5 is used to control the movement of the diaphragm assembly 2, and the diaphragm assembly 2 is used to control the opening and closing of the valve control port 14;

[0044] At least one sewage discharge rotor assembly 25 is provided on the diaphragm assembly 2. The sewage discharge rotor assembly 25 can be used to connect the valve inlet 12 with the diaphragm upper cavity 8. The sewage discharge rotor assembly 25 can also be used to destroy or separate impurities in the fluid medium. Specifically, the sewage discharge rotor assembly 25 is arranged on the following diaphragm 24. The sewage discharge rotor assembly 25 includes a sewage discharge water inlet sleeve 26 and a rotor 27. The rotor 27 is movably sleeved in the sewage discharge water inlet sleeve 26. When the fluid medium enters from the valve inlet 12, it will pass through the sewage discharge rotor assembly 25 on the diaphragm 24. The sewage discharge water inlet sleeve 26 is sleeved on the diaphragm 24. When the fluid medium passes through, the rotor 27 located in the middle of the sewage discharge water inlet sleeve 26 will rotate rapidly, which can destroy or separate some fine impurities. For example, some sticky and filamentous impurities can be effectively separated, so that they can pass through the sewage discharge rotor assembly 25 smoothly. Through the above design, the problem that impurities easily block the diaphragm water inlet hole in the existing solenoid valve, causing the solenoid valve to fail to work normally, is effectively solved.

[0045] like Figure 2 As shown, the electromagnetic device assembly 5 includes an iron core spring 16, a movable iron core 17, a magnetic isolation tube 18 and an electromagnetic coil 19. The movable iron core 17, the magnetic isolation tube 18 and the iron core spring 16 are all sleeved in the electromagnetic coil 19. The iron core spring 16 abuts against the movable iron core 17. When the electromagnetic coil 19 is not energized, the movable iron core 17 is pressed downward. At this time, the sealing member 30 abuts against and presses against the pilot valve port 21, and then the electromagnetic valve is ensured to be in a sealed state; the diaphragm assembly 2 also includes a diaphragm fixing device 20 and a diaphragm 24. The diaphragm fixing device 20 includes a pilot valve port 21, a diaphragm pressure plate 22 and a diaphragm bottom plate 23 which are arranged in sequence. The diaphragm 24 is fixed between the diaphragm pressure plate 22 and the diaphragm bottom plate 23. The diaphragm fixing device 20 in this embodiment is fixed by riveting, specifically, by a rotary riveting method, such as Fig.14 As shown, during rotary riveting, the riveting rod rotates and swings left and right to rivet the diaphragm assembly in sequence. After riveting, the diaphragm assembly is flat, smooth and consistent. The diaphragm assembly riveted in this way will not have the phenomenon of inconsistent riveting flatness due to the artificial force being too large or too small.

[0046] like Figure 5As shown, a sealing member 30 is provided at the bottom of the movable iron core 17, and the movable iron core 17 is clamped with the pilot valve port 21 through the connecting block 4. When the electromagnetic coil 19 is not energized, the sealing member 30 seals the pilot valve port 21 under the elastic force of the iron core spring 16; when the electromagnetic coil 19 is energized, under the action of the electromagnetic force, the movable iron core 17 compresses the iron core spring 16 to move upward, and at the same time drives the sealing member 30 to move upward and open the pilot valve port 21, so that the upper cavity 8 of the diaphragm is depressurized, and then drives the pilot valve port 21 to move upward through the connecting block 4, thereby driving the diaphragm assembly 2 to move upward to open the valve control port 14, and the fluid medium can flow out from the valve outlet 13;

[0047] like Figure 5 As shown, the bottom of the movable iron core 17 and the top of the pilot valve port 21 are provided with corresponding extension ends 10, and the movable iron core 17 and the pilot valve port 21 are connected with the connecting block 4 through the extension ends 10. The connecting block 4 is made of rigid material. Compared with the connection method of the elastic connector in the prior art, when the pressure of the solenoid valve is very low, when the movable iron core 17 moves upward, it can only stretch the elastic connector, but cannot completely lift the diaphragm assembly 2, resulting in a very small flow. This embodiment is connected by the rigid connection method of the connecting block 4. As long as the movable iron core 17 moves upward, the diaphragm assembly 2 will be driven to move upward through the connecting block 4, which meets the actual use requirements.

[0048] In this embodiment, a nano coating is provided on the surface of the diaphragm 24. Specifically, the coated VITON diaphragm is immersed in an acid-base medium liquid for 72 hours and then taken out for analysis. No cracking, swelling, deformation, dissolution, etc. occur, and the protective effect is excellent. A filter screen 11 is also provided at the valve inlet 12. Specifically, a filter screen groove is provided at the valve inlet 12, and a 60-90 mesh filter screen 11 can be installed to block large particles of impurities and ensure that there is no large garbage in the cavity, providing good prerequisites for the fluid medium to flow through the sewage rotor assembly 25. The filter screen 11 is also very convenient to clean. As long as the bolts on the valve cover 3 are unscrewed and the upper part of the valve cover 3 is removed, the filter screen 11 can be taken out for cleaning.

[0049] Embodiment 2:

[0050] Compared with Example 1, in this embodiment, Figure 1 , Figure 2 , the multifunctional solenoid valve further comprises a manual control device 6 arranged at the bottom of the valve body 1, the manual control device 6 comprises a push rod 31, a push pin 32, a valve bottom insert kit 33 and a rotating handle 34, the valve bottom insert kit 33 is arranged at the bottom of the valve body 1, the push rod 31 is penetrated on the valve bottom insert kit 33 and extends into the inner cavity of the valve body 1, the push pin 32 is arranged at the end of the push rod 31, the position of the push rod 31 can be adjusted by rotating the handle 34 so that the push pin 32 abuts against and lifts the sealing member 30, and the pilot valve port 21 is opened, as shown in FIG. Figure 6 , Figure 7 As shown;

[0051] Specifically, when a fire or other emergency occurs and the solenoid valve needs to be opened immediately for emergency rescue, the manual control device 6 can provide better on-site assistance. A thread is provided between the push rod 31 and the valve bottom insert 33. When the solenoid valve needs to be opened manually, the rotating handle 34 is held by hand and rotated clockwise, so that the push rod 31 drives the ejector pin 32 to move upward, and finally the ejector pin 32 pushes the sealing member 30, and the solenoid valve completes the opening action.

[0052] Embodiment 3:

[0053] Compared with Example 1, in this embodiment, Fig.11 As shown, at least one reserved installation hole 7 is also provided on the side of the valve body 1, and the reserved installation hole 7 is used to install the detection device 9. The detection device 9 includes a pressure sensor or a medium concentration meter or an electronic flow meter or a pressure switch or a temperature sensor, etc.; for example, installing a pressure sensor can better detect the actual pressure situation at the solenoid valve. Often, in many projects, due to the long wiring pipelines, which are tens or hundreds of meters, although a pressure gauge is installed on the pipeline, the pressure is lost after flowing through such a long pipeline. When the fluid medium flows to the vicinity of the solenoid valve, the actual pressure is not the initial pressure designed in theory, and often cannot reach the initial designed working condition;

[0054] Therefore, directly installing it on the solenoid valve saves a lot of manpower and material resources compared to installing it on the pipeline, and it can also be detected in real time. This embodiment leaves space for these components that need to be installed, which is very convenient.

[0055] Embodiment 4:

[0056] Compared with the embodiment 1, in this embodiment, a large flux inlet flow channel 29 is provided at the valve inlet 12, and the large flux inlet flow channel 29 extends from the lowest position M point of the valve inlet 12 to the lowest position N point of the side of the outer wall of the valve control port 14, and the inlet cross section 15 is the vertical cross section of the large flux inlet flow channel 29. The inlet cross section 15 of this embodiment has a larger area;

[0057] Specifically, if Figure 8 , Fig. 9 , Fig.10The structure shown is an unreasonable valve cavity design in the existing design. In this design, when the fluid medium flows in from the valve inlet 12 and the fluid medium pressure is relatively high, the fluid medium cannot flow to the top very smoothly. At least half of the fluid medium encounters an obstruction. At this time, the fluid medium will be dispersed by various forces, and many complex vortices will be generated inside, which will also cause a great impact on the internal parts. It can be clearly seen from the top view that although the valve inlet 12 of the solenoid valve is very large, its effective flow area suddenly becomes narrow, which ultimately causes the solenoid valve flow to become very small, which does not meet the flow requirement of the solenoid valve.

[0058] This embodiment adopts Fig.11 , Fig.12 , Fig.13 In the structure shown, after the fluid medium enters the valve inlet 12, there is no obstruction, and the fluid medium rushes to the highest point very smoothly along the smooth inclined surface. By comparison, it can be seen that the inlet of the solenoid valve of this embodiment is relatively wide and the flow rate of the solenoid valve meets the requirements.

[0059] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A multifunctional solenoid valve, characterized in that: The multifunctional solenoid valve comprises: a valve body (1), a valve cover (3), a diaphragm assembly (2) located between the valve body (1) and the valve cover (3), and an electromagnetic device assembly (5) arranged on the upper part of the valve cover (3); The valve body (1) comprises a valve inlet (12), a valve outlet (13) and a valve control port (14); the electromagnetic device assembly (5) is used to control the movement of the diaphragm assembly (2); and the diaphragm assembly (2) is used to control the opening and closing of the valve control port (14); The diaphragm assembly (2) is provided with at least one sewage discharge rotor assembly (25), and the sewage discharge rotor assembly (25) can be used to connect the valve inlet (12) and the diaphragm upper chamber (8), and the sewage discharge rotor assembly (25) can also be used to destroy or separate impurities in the fluid medium; The electromagnetic device assembly (5) comprises an iron core spring (16), a movable iron core (17), a magnetic isolation tube (18) and an electromagnetic coil (19), wherein the iron core spring (16) is in contact with the movable iron core (17); the diaphragm assembly (2) further comprises a diaphragm fixing device (20) and a diaphragm (24), wherein the sewage discharge rotor assembly (25) is arranged on the diaphragm (24), wherein the diaphragm fixing device (20) comprises a pilot valve port (21), a diaphragm pressure plate (22) and a diaphragm bottom plate (23) which are arranged in sequence, and wherein the diaphragm (24) is fixed between the diaphragm pressure plate (22) and the diaphragm bottom plate (23); The sewage discharge rotor assembly (25) comprises a sewage discharge water inlet jacket (26) and a rotor (27), wherein the rotor (27) is movably sleeved in the sewage discharge water inlet jacket (26).

2. A multifunctional solenoid valve as claimed in claim 1, characterized in that: A sealing member (30) is provided at the bottom of the movable iron core (17). The movable iron core (17) is clamped with the pilot valve port (21) via a connecting block (4). When the electromagnetic coil (19) is not energized, the sealing member (30) seals the pilot valve port (21) under the elastic force of the iron core spring (16). When the electromagnetic coil (19) is energized, the movable iron core (17) compresses the iron core spring (16) to move upward under the action of the electromagnetic force, and at the same time drives the sealing member (30) to move upward and open the pilot valve port (21), so that the upper chamber (8) of the diaphragm is depressurized, and then drives the pilot valve port (21) upward through the connecting block (4), thereby driving the diaphragm assembly (2) to move upward and open the valve control port (14), so that the fluid medium can flow out from the valve outlet (13).

3. A multifunctional solenoid valve as claimed in claim 2, characterized in that: The bottom of the movable iron core (17) and the top of the pilot valve port (21) are provided with corresponding protruding ends (10), and the movable iron core (17) and the pilot valve port (21) are connected to the connecting block (4) via the protruding ends (10), and the connecting block (4) is made of a rigid material.

4. A multifunctional solenoid valve as claimed in claim 2, characterized in that: The multifunctional solenoid valve further comprises a manual control device (6) arranged at the bottom of the valve body (1), the manual control device (6) comprising a push rod (31), a push pin (32), a valve bottom insert kit (33) and a rotating handle (34), the valve bottom insert kit (33) being arranged at the bottom of the valve body (1), the push rod (31) being inserted through the valve bottom insert kit (33) and extending into the inner cavity of the valve body (1), the push pin (32) being arranged at the end of the push rod (31), the position of the push rod (31) being adjustable by means of the rotating handle (34) so ​​that the push pin (32) abuts against and lifts the sealing member (30), thereby opening the pilot valve port (21).

5. A multifunctional solenoid valve as claimed in claim 1, characterized in that: The side of the valve body (1) is also provided with at least one reserved installation hole (7), and the reserved installation hole (7) is used to install a detection device (9), and the detection device (9) includes a pressure sensor or a medium concentration meter or an electronic flow meter or a pressure switch or a temperature sensor.

6. A multifunctional solenoid valve as claimed in claim 1, characterized in that: The surface of the diaphragm (24) is provided with a nano coating, and a filter screen (11) is also provided at the valve inlet (12).

7. A multifunctional solenoid valve as claimed in claim 1, characterized in that: The diaphragm assembly (2) is fixed by means of rotational riveting.

8. A multifunctional solenoid valve as claimed in claim 1, characterized in that: A large-flux inlet flow channel (29) is provided at the valve inlet (12), and the large-flux inlet flow channel (29) extends from a lowest point M of the valve inlet (12) to a lowest point N on the side of the outer wall of the valve control port (14).

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